China became world' most successful rail and highspeed train maker, but it want to let autonomous HK make their money and retain profits, for the 高铁 HSR to HK portion. And HK idiots fucked it up.
The test found it is fucked up and test train derail several wheels during test. The rail shift off by 3 inches at turning corner bend. This is just one of the MANY FAILURES in the long postponed completion a high profile project. China always completed their projects AHEAD of schedules. HK caused lots of cheating and frauds, and failures. Many quality and safety crisis.
Reclaimed island shore erosion, tunnel leaking water, rail troubles, station troubles, bridge troubles, concert quality control frauds and cover ups. Corruptions. Many scandals and delays to the project.
Useless HK is shameful fucked up ex-British Colony like Ang Moh Shit Eating Singapore!
Beijing should had never let Hongkee hands into these projects, they are corrupted and incompetent. Just 100% mainland firms to handle, all 100% successfully done and ahead of schedules like always in mainland 高铁, high quality and safety.
https://hk.news.yahoo.com/高鐵出軌揭計漏數-彎位路軌受壓變形偏離三吋-214500461.html
高鐵出軌揭計漏數 彎位路軌受壓變形偏離三吋
東方日報 OrientalDaily
3.6k 人追蹤
東方日報
2018年5月29日 上午5:45
查看相片
發生出軌事故的四號維修路軌。（港鐵提供短片的截圖）
港鐵車務營運總管（高速鐵路）李聖基昨公布調查結果，指工程人員上月三日在石崗車廠發現一列高鐵列車尾卡的車輪與路軌出現偏離，調查小組事後在全長四百三十五米的四號維修路軌，發現其中一段長六點六米的彎位，路軌「軌距」較標準寬，但路軌仍穩固在工字鐵上，故認為是列車試運行時，於經過彎位段出現橫向壓力，導致工字鐵變形，拉闊一小段路軌的軌距。
設計憑過往經驗 忽略過彎壓力
他解釋，顧問公司根據過往經驗設計維修路軌，假定所受的橫向壓力輕微，但忽略四號路軌有一小段彎位，列車過彎時會令橫向壓力上升，四條維修路軌均採用相同的承托設計，結果發生出軌事故。李聖基未有用「出錯」形容事件，亦沒有正面回應會否追究顧問公司，僅指會要求對方跟進問題。
被問到高鐵正線路軌會否出現同樣的事故，李聖基稱四號維修路軌是高鐵香港段唯一以工字鐵承托及有彎位的軌道，車廠內其餘三條維修路軌均屬直線、無彎位。他指港鐵已決定在四號路軌下面以混凝土矮牆取代工字鐵及其結構裝置，以改善路軌橫向壓力的承受能力，同時保留足夠空間讓維修人員進入車底檢查及維修。
暫剩3維修軌道 稱開通後可應付
李聖基又指，四號路軌會暫時停用，直至完成改善工程，強調目前剩下三條維修軌道，足夠應付高鐵開通後的維修工作量。
據悉，今次涉事的顧問公司是奧雅納工程顧問有限公司，本報記者昨日曾致電及到該公司位於九龍塘的辦公室查詢，對方僅回應指港鐵已向政府提交報告，並無補充。
港鐵主席馬時亨昨在電台節目中重申，高鐵在試運期間「一定會遇到好多問題」，強調若試運時出現不尋常情況、影響安全或未能如期通車，港鐵必定會對外公布。
截至3月 接獲申索共涉款298億
此外，港鐵向立法會提交的進度報告指高鐵香港段整體工程截至今年三月底已完成百分之九十九點四，正為九月通車作準備，其中票務系統的調試預計今年第二季完成，現有四十五名港鐵列車司機完成培訓及考試，已獲取由國家鐵路局發出的高鐵駕駛證。
而高鐵項目截至三月共接獲一千一百一十三宗具有理據的申索，金額約為二百九十八億元，當中已解決三百零六宗，並已發放約九十四億六千二百萬元。
運輸及房屋局發言人指機電工程署聯同路政署正詳細審視有關的報告，並要求港鐵盡快落實肇事軌道的復修工程；機電署及相關政府部門會核實港鐵是否妥善完成所有與鐵路安全相關的測試，才會批准列車投入服務。
" data-reactid="31">廣深港高鐵香港段列車上月在石崗車廠維修路軌停泊時，尾卡右邊四個車輪出軌，港鐵昨日公布最終調查結果，形容事件不尋常，相信是工程顧問公司「計漏數」，忽略了路軌有一段彎位，顧問在設計時假設列車進入涉事位置產生的橫向壓力與筆直的路軌相若，結果在承托力不足的情況下，路軌下方的工字鐵及結構裝置變形，導致路軌「軌距」較標準寬闊，終令車輪與路軌出現兩至三吋的偏離。港鐵強調正線路軌均安裝於混凝土基座或軌枕上，而其餘三條維修路軌均為直線，不會發生相類的出軌事故。
港鐵車務營運總管（高速鐵路）李聖基昨公布調查結果，指工程人員上月三日在石崗車廠發現一列高鐵列車尾卡的車輪與路軌出現偏離，調查小組事後在全長四百三十五米的四號維修路軌，發現其中一段長六點六米的彎位，路軌「軌距」較標準寬，但路軌仍穩固在工字鐵上，故認為是列車試運行時，於經過彎位段出現橫向壓力，導致工字鐵變形，拉闊一小段路軌的軌距。
設計憑過往經驗 忽略過彎壓力
他解釋，顧問公司根據過往經驗設計維修路軌，假定所受的橫向壓力輕微，但忽略四號路軌有一小段彎位，列車過彎時會令橫向壓力上升，四條維修路軌均採用相同的承托設計，結果發生出軌事故。李聖基未有用「出錯」形容事件，亦沒有正面回應會否追究顧問公司，僅指會要求對方跟進問題。
被問到高鐵正線路軌會否出現同樣的事故，李聖基稱四號維修路軌是高鐵香港段唯一以工字鐵承托及有彎位的軌道，車廠內其餘三條維修路軌均屬直線、無彎位。他指港鐵已決定在四號路軌下面以混凝土矮牆取代工字鐵及其結構裝置，以改善路軌橫向壓力的承受能力，同時保留足夠空間讓維修人員進入車底檢查及維修。
暫剩3維修軌道 稱開通後可應付
李聖基又指，四號路軌會暫時停用，直至完成改善工程，強調目前剩下三條維修軌道，足夠應付高鐵開通後的維修工作量。
據悉，今次涉事的顧問公司是奧雅納工程顧問有限公司，本報記者昨日曾致電及到該公司位於九龍塘的辦公室查詢，對方僅回應指港鐵已向政府提交報告，並無補充。
港鐵主席馬時亨昨在電台節目中重申，高鐵在試運期間「一定會遇到好多問題」，強調若試運時出現不尋常情況、影響安全或未能如期通車，港鐵必定會對外公布。
截至3月 接獲申索共涉款298億
此外，港鐵向立法會提交的進度報告指高鐵香港段整體工程截至今年三月底已完成百分之九十九點四，正為九月通車作準備，其中票務系統的調試預計今年第二季完成，現有四十五名港鐵列車司機完成培訓及考試，已獲取由國家鐵路局發出的高鐵駕駛證。
而高鐵項目截至三月共接獲一千一百一十三宗具有理據的申索，金額約為二百九十八億元，當中已解決三百零六宗，並已發放約九十四億六千二百萬元。
運輸及房屋局發言人指機電工程署聯同路政署正詳細審視有關的報告，並要求港鐵盡快落實肇事軌道的復修工程；機電署及相關政府部門會核實港鐵是否妥善完成所有與鐵路安全相關的測試，才會批准列車投入服務。
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高鐵列車模擬慢速駛入車廠的情況。（港鐵提供短片的截圖）
查看相片
李聖基形容出軌事故不尋常。（黃仲民攝）
https://hk.news.yahoo.com/疏忽計算轉彎壓力-後果嚴重-專家-計漏數好兒戲-214500596.html
疏忽計算轉彎壓力 後果嚴重 專家：計漏數好兒戲
東方日報 OrientalDaily
3.6k 人追蹤
東方日報
2018年5月29日 上午5:45
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高鐵試營運期間曾發生出軌事件。
料工程人員睇圖時「無理到」
他又指，計算橫向壓力時主要有三個考慮因素，一是車重、二是彎位弧度、三是車速，設計人員在設計時應已掌握實際數據，亦需要有一定安全系數，不會輕易超出估算。至於港鐵建議以混凝土矮牆取代工字鐵進行補救，他認為使用工字鐵還是混凝土的分別不大，「最緊要計清楚力學，兩樣既承托力都可以好強」。
英國機械工程師學會院士盧覺強亦指不可能出現「計漏數」，「所有彎位都要計算橫向壓力，尤其是重型機械，無計好兒戲，評估得好差！」他猜測工程人員「睇圖時誤以為彎位非常輕微，所以無理到彎位」，又指疏忽計算轉彎位的橫向壓力後果十分嚴重，幸在試運行期間發現，希望負責的工程師加強把關。對於混凝土取代工字鐵，他認為混凝土內必須加上鋼筋，以確保有足夠的承托力。
" data-reactid="31">【本報訊】高鐵列車試運行期間車輪「出軌」，港鐵直指出軌原因是顧問設計該段軌道承托裝置時「計漏數」所致。工程師學會前會長張志剛認為顧問公司「計漏數」的情況十分罕見，因為顧問公司設計時要考慮弧形軌道所產生的橫向力，「即等如你搭車向左轉時，個人會傾向右一樣」，雖然要透過複雜計算，但一般工程很少會出現「計錯」或者「計漏」的情況。
料工程人員睇圖時「無理到」
他又指，計算橫向壓力時主要有三個考慮因素，一是車重、二是彎位弧度、三是車速，設計人員在設計時應已掌握實際數據，亦需要有一定安全系數，不會輕易超出估算。至於港鐵建議以混凝土矮牆取代工字鐵進行補救，他認為使用工字鐵還是混凝土的分別不大，「最緊要計清楚力學，兩樣既承托力都可以好強」。
英國機械工程師學會院士盧覺強亦指不可能出現「計漏數」，「所有彎位都要計算橫向壓力，尤其是重型機械，無計好兒戲，評估得好差！」他猜測工程人員「睇圖時誤以為彎位非常輕微，所以無理到彎位」，又指疏忽計算轉彎位的橫向壓力後果十分嚴重，幸在試運行期間發現，希望負責的工程師加強把關。對於混凝土取代工字鐵，他認為混凝土內必須加上鋼筋，以確保有足夠的承托力。
查看相片
石崗車廠上月爆出高鐵列車出軌事故。
" data-reactid="52">
https://hk.news.yahoo.com/%E9%AB%98%E9%90%B5%E5%87%BA%E8%BB%8C%E6%8F%AD%E8%A8%88%E6 %BC%8F%E6%95%B8-%E5%BD%8E%E4%BD%8D%E8%B7%AF%E8%BB%8C%E5%8F%97%E5%A3%93%E8% AE%8A%E5%BD%A2%E5%81%8F%E9%9B%A2%E4%B8%89%E5%90%8B-214500461.html
Derailment of high-speed rail derailment deviations
[Oriental Daily OrientalDaily]
Oriental Daily OrientalDaily
3.6k person tracking
Oriental Daily
May 29, 2018 5:45am
No. 4 maintenance track for a derailment accident. (Screenshots of the MTR offering short films)
See photos
No. 4 maintenance track for a derailment accident. (Screenshots of the MTR offering short films)
Ms. Li Chengji, the manager of the MTR vehicle operations (high-speed railway), released the survey results yesterday and pointed out that the engineering staff found a deviation between the wheels and the rails of a tailgate of a high-speed train on the 3rd of last month at the Shigang depot. The investigation team had a total length of 330 afterwards. The five-meter repair track No. 4 was found to have a 6.6-meter-long bend. The "gauge" of the track was wider than the standard, but the rail was still firmly on the I-beam. Therefore, it was thought that the train was undergoing a bend during trial operation. Lateral pressure occurs in the section, causing the deformation of the I-beam and widening the gauge of a small section of the rail.
Design based on past experience
He explained that the consultancy company designed and maintained the rails based on past experience. Assume that the lateral pressure is slight, but neglecting the fourth rail has a small bend. The train will make the lateral pressure rise when cornering. The four support rails all use the same support design. As a result, a derailment accident occurred. Li Shengji did not use "errors" to describe the incident. Nor did he respond positively to the investigation of the consultant company. He merely asked that the other party follow up the issue.
When asked whether the same accident occurred on the high-speed rail track, Li Shengji claimed that the No. 4 maintenance track was the only track supported by the I-Rail in the Hong Kong section of the HSR, and the remaining three maintenance rails in the depot were straight. Bend position. He pointed out that the MTR has decided to replace the I-shaped iron and its structural devices with concrete short walls under the No. 4 rail to improve the lateral pressure bearing capacity of the rails, while leaving enough room for maintenance personnel to enter vehicle inspection and maintenance.
The remaining 3 maintenance tracks can be dealt with after opening
Li Shengji also pointed out that the No. 4 rail will be temporarily suspended until the completion of the improvement project, emphasizing that the remaining three maintenance tracks are sufficient to meet the maintenance workload after the opening of the HSR.
It is reported that the consultancy company involved in this case is Arup Engineering Consulting Co., Ltd.. Our reporter yesterday called and went to the company’s office in Kowloon Tong. The other party only responded that the MTR Corporation had submitted a report to the government. .
MTR Chairman Ma Shih-hang reiterated on the radio program yesterday that the high-speed train will “must have a lot of problems” during the trial run, emphasizing that the MTR will surely announce it to the public if unusual situations occur during trial operation, affect safety, or fail to open as scheduled.
As of March, received a total of 29.8 billion yuan in claims
In addition, the progress report submitted by the MTR to the Legislative Council indicates that the overall project of the Hong Kong-Hong Kong section of high-speed rail has been completed by 99.4 per cent by the end of March this year. It is preparing for opening in September. The commissioning of the ticketing system is expected to be in the second quarter of this year. Upon completion, the existing 45 MTR train drivers have completed training and examinations and have obtained high-speed train driving licenses issued by the State Railway Administration.
The high-speed rail project received a total of 1,113 valid claims in March, amounting to about $28.9 billion, of which 306 have been resolved and about 94 have been issued. 62 million yuan.
A spokesman for the Transport and Housing Bureau said that the Electrical and Mechanical Services Department and the Highways Department are reviewing the relevant reports in detail and requested the MTR to implement the rehabilitation of the accident track as soon as possible; the EMSD and relevant government departments will verify whether the MTR has completed all railway operations properly. Safety-related tests will only allow trains to be put into service.
廣深港高鐵香港段列車上月在石崗車廠維修路軌停泊時，尾卡右邊四個車輪出軌，港鐵昨日公布最終調查結果，形容事件不尋常，相信是">"data-reactid="31"> When the Hong Kong-Shenzhen-Hong Kong high-speed rail section of Hong Kong was parked last month at the Shigang Depot maintenance rail, the four wheels on the right side of the tailgate derailed. The MTR announced the final investigation results yesterday and described the incident as unusual. I believe it is The engineering consultant company “counted the number of leaks”, ignoring that there was a bend in the track, the consultants assumed that the lateral pressure generated by the train entering the position concerned was similar to that of the straight track. The result was that under the condition of insufficient bearing force, the track was under the track. The deformation of the I-shaped rails and the structural devices resulted in the rail gauge being wider than the standard, resulting in a two- to three-turn deviation between the wheels and the rails. The MTR emphasised that the rails are all installed on concrete foundations or sleepers, while the remaining three maintenance rails are straight and similar accidents will not occur.
Ms. Li Chengji, the manager of the MTR vehicle operations (high-speed railway), released the survey results yesterday and pointed out that the engineering staff found a deviation between the wheels and the rails of a tailgate of a high-speed train on the 3rd of last month at the Shigang depot. The investigation team had a total length of 330 afterwards. The five-meter repair track No. 4 was found to have a 6.6-meter-long bend. The "gauge" of the track was wider than the standard, but the rail was still firmly on the I-beam. Therefore, it was thought that the train was undergoing a bend during trial operation. Lateral pressure occurs in the section, causing the deformation of the I-beam and widening the gauge of a small section of the rail.
Design based on past experience
He explained that the consultancy company designed and maintained the rails based on past experience. Assume that the lateral pressure is slight, but neglecting the fourth rail has a small bend. The train will make the lateral pressure rise when cornering. The four support rails all use the same support design. As a result, a derailment accident occurred. Li Shengji did not use "errors" to describe the incident, nor did he respond positively to the advising of the consultancy company. He only said that he would ask the other party to follow up the issue.
When asked whether the same accident occurred on the high-speed rail track, Li Shengji claimed that the No. 4 maintenance track was the only track supported by the I-Rail in the Hong Kong section of the HSR, and the remaining three maintenance rails in the depot were straight. Bend position. He pointed out that the MTR has decided to replace the I-shaped iron and its structural devices with concrete short walls under the No. 4 rail to improve the lateral pressure bearing capacity of the rails, while leaving enough room for maintenance personnel to enter vehicle inspection and maintenance.
The remaining 3 maintenance tracks can be dealt with after opening
Li Shengji also pointed out that the No. 4 rail will be temporarily suspended until the completion of the improvement project, emphasizing that the remaining three maintenance tracks are sufficient to meet the maintenance workload after the opening of the HSR.
It is reported that the consultancy company involved in this case is Arup Engineering Consulting Co., Ltd.. Our reporter yesterday called and went to the company’s office in Kowloon Tong. The other party only responded that the MTR Corporation had submitted a report to the government. .
MTR Chairman Ma Shih-hang reiterated on the radio program yesterday that the high-speed rail will “must have a lot of problems” during the trial run, stressing that the MTR will surely announce it to the public if unusual circumstances occur during trial operation, affect safety, or fail to open as scheduled.
As of March, received a total of 29.8 billion yuan in claims
In addition, the progress report submitted by the MTR to the Legislative Council indicates that the overall project of the Hong Kong-Hong Kong section of high-speed rail has been completed by 99.4 per cent by the end of March this year. It is preparing for opening in September. The commissioning of the ticketing system is expected to be in the second quarter of this year. Upon completion, the existing 45 MTR train drivers have completed training and examinations, and have obtained high-speed train driving licenses issued by the State Railway Administration.
The high-speed rail project received a total of 1,113 valid claims in March, amounting to about $28.9 billion, of which 306 have been resolved and about 94 have been issued. 62 million yuan.
A spokesman for the Transport and Housing Bureau said that the Electrical and Mechanical Services Department and the Highways Department are reviewing the relevant reports in detail and requested the MTR to implement the rehabilitation of the accident track as soon as possible; the EMSD and relevant government departments will verify whether the MTR has completed all railway operations properly. Safety-related tests will only allow trains to be put into service.
High-speed trains simulate slow speeds into the depot. (Screenshots of the MTR offering short films)
See photos
High-speed trains simulate slow speeds into the depot. (Screenshots of the MTR offering short films)
Li Shengji described the derailment accident as unusual. (photo by Huang Zhongmin)
See photos
Li Shengji described the derailment accident as unusual. (photo by Huang Zhongmin)
https://hk.news.yahoo.com/%E7%96%8F%E5%BF%BD%E8%A8%88%E7%AE%97%E8%BD%89%E5%BD%8E%E5 %A3%93%E5%8A%9B-%E5%BE%8C%E6%9E%9C%E5%9A%B4%E9%87%8D-%E5%B0%88%E5%AE%B6-% E8%A8%88%E6%BC%8F%E6%95%B8%E5%A5%BD%E5%85%92%E6%88%B2-214500596.html
Neglected calculation of turning pressure Serious consequences
[Oriental Daily OrientalDaily]
Oriental Daily OrientalDaily
3.6k person tracking
Oriental Daily
May 29, 2018 5:45am
Derailment occurred during trial operation of the high-speed rail.
See photos
Derailment occurred during trial operation of the high-speed rail.
When the project engineer plans to "arbitrary"
He also pointed out that when calculating lateral pressure, there are mainly three considerations. One is the weight of the vehicle, the second is the arc of the bend, and the third is the speed of the vehicle. Designers should have mastered the actual data in the design and also need a certain safety factor. Exceeding estimates. As for the MTR Corporation's proposal to replace I-beams with concrete short walls for remediation, he believes that the use of I-steel or concrete is not a big difference. "The most important thing is to calculate the mechanics clearly, and both types of support can be strong."
Lu Xueqiang, a member of the Institute of Mechanical Engineers of the United Kingdom, also pointed out that there was no possibility of "counting losses." "All the bends must be calculated for lateral pressure, especially for heavy machinery, with no good show, and the assessment is poor!" When mistakenly thought that the bending position is very slight, so unreasonable to bend the position, it also means that the consequences of neglecting to calculate the lateral pressure of the turning position are very serious. Fortunately during the trial operation, it was hoped that the responsible engineer would step up the check. For concrete instead of I-iron, he believes that reinforcement must be added to the concrete to ensure sufficient bearing capacity.
【本報訊】高鐵列車試運行期間車輪「出軌」，港鐵直指出軌原因是顧問設計該段軌道承托裝置時「計漏數」所致。">"data-reactid="31">[Reported by the newspaper] During the trial operation of the HSR train, the wheels were "derailed." The reason why the MTR train pointed out the rails was due to the "counted number of leakages" when the consultants designed the track supporting equipment. The former president of the Institute of Engineers, Zhang Zhigang, believes that consultants' "counting" is very rare because the consultants must consider the lateral force generated by the curved track. "Wait if you turn left when you ride a car, the individual will tend to be right. Although complex calculations are needed, there are very few cases of "counting mistakes" or "counting leaks."
When the project engineer plans to "arbitrary"
He also pointed out that when calculating lateral pressure, there are mainly three considerations. One is the weight of the vehicle, the second is the arc of the bend, and the third is the speed of the vehicle. Designers should have mastered the actual data in the design and also need a certain safety factor. Exceeding estimates. As for the MTR Corporation's proposal to replace I-beams with concrete short walls for remediation, he believes that the use of I-steel or concrete is not a big difference. "The most important thing is to calculate the mechanics clearly, and both types of support can be strong."
Lu Xueqiang, a member of the Institute of Mechanical Engineers of the United Kingdom, also pointed out that there was no possibility of "counting losses." "All the bends must be calculated for lateral pressure, especially for heavy machinery, with no good show, and the assessment is poor!" When mistakenly thought that the bending position is very slight, so unreasonable to bend the position, it also means that the consequences of neglecting to calculate the lateral pressure of the turning position are very serious. Fortunately during the trial operation, it was hoped that the responsible engineer would step up the check. For concrete instead of I-iron, he believes that reinforcement must be added to the concrete to ensure sufficient bearing capacity.
The Shigang depot broke out of a high-speed train derailed last month.
See photos
The Shigang depot broke out of a high-speed train derailed last month.
">" data-reactid="52">
The test found it is fucked up and test train derail several wheels during test. The rail shift off by 3 inches at turning corner bend. This is just one of the MANY FAILURES in the long postponed completion a high profile project. China always completed their projects AHEAD of schedules. HK caused lots of cheating and frauds, and failures. Many quality and safety crisis.
Reclaimed island shore erosion, tunnel leaking water, rail troubles, station troubles, bridge troubles, concert quality control frauds and cover ups. Corruptions. Many scandals and delays to the project.
Useless HK is shameful fucked up ex-British Colony like Ang Moh Shit Eating Singapore!
Beijing should had never let Hongkee hands into these projects, they are corrupted and incompetent. Just 100% mainland firms to handle, all 100% successfully done and ahead of schedules like always in mainland 高铁, high quality and safety.
https://hk.news.yahoo.com/高鐵出軌揭計漏數-彎位路軌受壓變形偏離三吋-214500461.html
高鐵出軌揭計漏數 彎位路軌受壓變形偏離三吋
東方日報 OrientalDaily
3.6k 人追蹤
東方日報
2018年5月29日 上午5:45
查看相片
發生出軌事故的四號維修路軌。（港鐵提供短片的截圖）
港鐵車務營運總管（高速鐵路）李聖基昨公布調查結果，指工程人員上月三日在石崗車廠發現一列高鐵列車尾卡的車輪與路軌出現偏離，調查小組事後在全長四百三十五米的四號維修路軌，發現其中一段長六點六米的彎位，路軌「軌距」較標準寬，但路軌仍穩固在工字鐵上，故認為是列車試運行時，於經過彎位段出現橫向壓力，導致工字鐵變形，拉闊一小段路軌的軌距。
設計憑過往經驗 忽略過彎壓力
他解釋，顧問公司根據過往經驗設計維修路軌，假定所受的橫向壓力輕微，但忽略四號路軌有一小段彎位，列車過彎時會令橫向壓力上升，四條維修路軌均採用相同的承托設計，結果發生出軌事故。李聖基未有用「出錯」形容事件，亦沒有正面回應會否追究顧問公司，僅指會要求對方跟進問題。
被問到高鐵正線路軌會否出現同樣的事故，李聖基稱四號維修路軌是高鐵香港段唯一以工字鐵承托及有彎位的軌道，車廠內其餘三條維修路軌均屬直線、無彎位。他指港鐵已決定在四號路軌下面以混凝土矮牆取代工字鐵及其結構裝置，以改善路軌橫向壓力的承受能力，同時保留足夠空間讓維修人員進入車底檢查及維修。
暫剩3維修軌道 稱開通後可應付
李聖基又指，四號路軌會暫時停用，直至完成改善工程，強調目前剩下三條維修軌道，足夠應付高鐵開通後的維修工作量。
據悉，今次涉事的顧問公司是奧雅納工程顧問有限公司，本報記者昨日曾致電及到該公司位於九龍塘的辦公室查詢，對方僅回應指港鐵已向政府提交報告，並無補充。
港鐵主席馬時亨昨在電台節目中重申，高鐵在試運期間「一定會遇到好多問題」，強調若試運時出現不尋常情況、影響安全或未能如期通車，港鐵必定會對外公布。
截至3月 接獲申索共涉款298億
此外，港鐵向立法會提交的進度報告指高鐵香港段整體工程截至今年三月底已完成百分之九十九點四，正為九月通車作準備，其中票務系統的調試預計今年第二季完成，現有四十五名港鐵列車司機完成培訓及考試，已獲取由國家鐵路局發出的高鐵駕駛證。
而高鐵項目截至三月共接獲一千一百一十三宗具有理據的申索，金額約為二百九十八億元，當中已解決三百零六宗，並已發放約九十四億六千二百萬元。
運輸及房屋局發言人指機電工程署聯同路政署正詳細審視有關的報告，並要求港鐵盡快落實肇事軌道的復修工程；機電署及相關政府部門會核實港鐵是否妥善完成所有與鐵路安全相關的測試，才會批准列車投入服務。
" data-reactid="31">廣深港高鐵香港段列車上月在石崗車廠維修路軌停泊時，尾卡右邊四個車輪出軌，港鐵昨日公布最終調查結果，形容事件不尋常，相信是工程顧問公司「計漏數」，忽略了路軌有一段彎位，顧問在設計時假設列車進入涉事位置產生的橫向壓力與筆直的路軌相若，結果在承托力不足的情況下，路軌下方的工字鐵及結構裝置變形，導致路軌「軌距」較標準寬闊，終令車輪與路軌出現兩至三吋的偏離。港鐵強調正線路軌均安裝於混凝土基座或軌枕上，而其餘三條維修路軌均為直線，不會發生相類的出軌事故。
港鐵車務營運總管（高速鐵路）李聖基昨公布調查結果，指工程人員上月三日在石崗車廠發現一列高鐵列車尾卡的車輪與路軌出現偏離，調查小組事後在全長四百三十五米的四號維修路軌，發現其中一段長六點六米的彎位，路軌「軌距」較標準寬，但路軌仍穩固在工字鐵上，故認為是列車試運行時，於經過彎位段出現橫向壓力，導致工字鐵變形，拉闊一小段路軌的軌距。
設計憑過往經驗 忽略過彎壓力
他解釋，顧問公司根據過往經驗設計維修路軌，假定所受的橫向壓力輕微，但忽略四號路軌有一小段彎位，列車過彎時會令橫向壓力上升，四條維修路軌均採用相同的承托設計，結果發生出軌事故。李聖基未有用「出錯」形容事件，亦沒有正面回應會否追究顧問公司，僅指會要求對方跟進問題。
被問到高鐵正線路軌會否出現同樣的事故，李聖基稱四號維修路軌是高鐵香港段唯一以工字鐵承托及有彎位的軌道，車廠內其餘三條維修路軌均屬直線、無彎位。他指港鐵已決定在四號路軌下面以混凝土矮牆取代工字鐵及其結構裝置，以改善路軌橫向壓力的承受能力，同時保留足夠空間讓維修人員進入車底檢查及維修。
暫剩3維修軌道 稱開通後可應付
李聖基又指，四號路軌會暫時停用，直至完成改善工程，強調目前剩下三條維修軌道，足夠應付高鐵開通後的維修工作量。
據悉，今次涉事的顧問公司是奧雅納工程顧問有限公司，本報記者昨日曾致電及到該公司位於九龍塘的辦公室查詢，對方僅回應指港鐵已向政府提交報告，並無補充。
港鐵主席馬時亨昨在電台節目中重申，高鐵在試運期間「一定會遇到好多問題」，強調若試運時出現不尋常情況、影響安全或未能如期通車，港鐵必定會對外公布。
截至3月 接獲申索共涉款298億
此外，港鐵向立法會提交的進度報告指高鐵香港段整體工程截至今年三月底已完成百分之九十九點四，正為九月通車作準備，其中票務系統的調試預計今年第二季完成，現有四十五名港鐵列車司機完成培訓及考試，已獲取由國家鐵路局發出的高鐵駕駛證。
而高鐵項目截至三月共接獲一千一百一十三宗具有理據的申索，金額約為二百九十八億元，當中已解決三百零六宗，並已發放約九十四億六千二百萬元。
運輸及房屋局發言人指機電工程署聯同路政署正詳細審視有關的報告，並要求港鐵盡快落實肇事軌道的復修工程；機電署及相關政府部門會核實港鐵是否妥善完成所有與鐵路安全相關的測試，才會批准列車投入服務。
查看相片
高鐵列車模擬慢速駛入車廠的情況。（港鐵提供短片的截圖）
查看相片
李聖基形容出軌事故不尋常。（黃仲民攝）
https://hk.news.yahoo.com/疏忽計算轉彎壓力-後果嚴重-專家-計漏數好兒戲-214500596.html
疏忽計算轉彎壓力 後果嚴重 專家：計漏數好兒戲
東方日報 OrientalDaily
3.6k 人追蹤
東方日報
2018年5月29日 上午5:45
查看相片
高鐵試營運期間曾發生出軌事件。
料工程人員睇圖時「無理到」
他又指，計算橫向壓力時主要有三個考慮因素，一是車重、二是彎位弧度、三是車速，設計人員在設計時應已掌握實際數據，亦需要有一定安全系數，不會輕易超出估算。至於港鐵建議以混凝土矮牆取代工字鐵進行補救，他認為使用工字鐵還是混凝土的分別不大，「最緊要計清楚力學，兩樣既承托力都可以好強」。
英國機械工程師學會院士盧覺強亦指不可能出現「計漏數」，「所有彎位都要計算橫向壓力，尤其是重型機械，無計好兒戲，評估得好差！」他猜測工程人員「睇圖時誤以為彎位非常輕微，所以無理到彎位」，又指疏忽計算轉彎位的橫向壓力後果十分嚴重，幸在試運行期間發現，希望負責的工程師加強把關。對於混凝土取代工字鐵，他認為混凝土內必須加上鋼筋，以確保有足夠的承托力。
" data-reactid="31">【本報訊】高鐵列車試運行期間車輪「出軌」，港鐵直指出軌原因是顧問設計該段軌道承托裝置時「計漏數」所致。工程師學會前會長張志剛認為顧問公司「計漏數」的情況十分罕見，因為顧問公司設計時要考慮弧形軌道所產生的橫向力，「即等如你搭車向左轉時，個人會傾向右一樣」，雖然要透過複雜計算，但一般工程很少會出現「計錯」或者「計漏」的情況。
料工程人員睇圖時「無理到」
他又指，計算橫向壓力時主要有三個考慮因素，一是車重、二是彎位弧度、三是車速，設計人員在設計時應已掌握實際數據，亦需要有一定安全系數，不會輕易超出估算。至於港鐵建議以混凝土矮牆取代工字鐵進行補救，他認為使用工字鐵還是混凝土的分別不大，「最緊要計清楚力學，兩樣既承托力都可以好強」。
英國機械工程師學會院士盧覺強亦指不可能出現「計漏數」，「所有彎位都要計算橫向壓力，尤其是重型機械，無計好兒戲，評估得好差！」他猜測工程人員「睇圖時誤以為彎位非常輕微，所以無理到彎位」，又指疏忽計算轉彎位的橫向壓力後果十分嚴重，幸在試運行期間發現，希望負責的工程師加強把關。對於混凝土取代工字鐵，他認為混凝土內必須加上鋼筋，以確保有足夠的承托力。
查看相片
石崗車廠上月爆出高鐵列車出軌事故。
" data-reactid="52">
https://hk.news.yahoo.com/%E9%AB%98%E9%90%B5%E5%87%BA%E8%BB%8C%E6%8F%AD%E8%A8%88%E6 %BC%8F%E6%95%B8-%E5%BD%8E%E4%BD%8D%E8%B7%AF%E8%BB%8C%E5%8F%97%E5%A3%93%E8% AE%8A%E5%BD%A2%E5%81%8F%E9%9B%A2%E4%B8%89%E5%90%8B-214500461.html
Derailment of high-speed rail derailment deviations
[Oriental Daily OrientalDaily]
Oriental Daily OrientalDaily
3.6k person tracking
Oriental Daily
May 29, 2018 5:45am
No. 4 maintenance track for a derailment accident. (Screenshots of the MTR offering short films)
See photos
No. 4 maintenance track for a derailment accident. (Screenshots of the MTR offering short films)
Ms. Li Chengji, the manager of the MTR vehicle operations (high-speed railway), released the survey results yesterday and pointed out that the engineering staff found a deviation between the wheels and the rails of a tailgate of a high-speed train on the 3rd of last month at the Shigang depot. The investigation team had a total length of 330 afterwards. The five-meter repair track No. 4 was found to have a 6.6-meter-long bend. The "gauge" of the track was wider than the standard, but the rail was still firmly on the I-beam. Therefore, it was thought that the train was undergoing a bend during trial operation. Lateral pressure occurs in the section, causing the deformation of the I-beam and widening the gauge of a small section of the rail.
Design based on past experience
He explained that the consultancy company designed and maintained the rails based on past experience. Assume that the lateral pressure is slight, but neglecting the fourth rail has a small bend. The train will make the lateral pressure rise when cornering. The four support rails all use the same support design. As a result, a derailment accident occurred. Li Shengji did not use "errors" to describe the incident. Nor did he respond positively to the investigation of the consultant company. He merely asked that the other party follow up the issue.
When asked whether the same accident occurred on the high-speed rail track, Li Shengji claimed that the No. 4 maintenance track was the only track supported by the I-Rail in the Hong Kong section of the HSR, and the remaining three maintenance rails in the depot were straight. Bend position. He pointed out that the MTR has decided to replace the I-shaped iron and its structural devices with concrete short walls under the No. 4 rail to improve the lateral pressure bearing capacity of the rails, while leaving enough room for maintenance personnel to enter vehicle inspection and maintenance.
The remaining 3 maintenance tracks can be dealt with after opening
Li Shengji also pointed out that the No. 4 rail will be temporarily suspended until the completion of the improvement project, emphasizing that the remaining three maintenance tracks are sufficient to meet the maintenance workload after the opening of the HSR.
It is reported that the consultancy company involved in this case is Arup Engineering Consulting Co., Ltd.. Our reporter yesterday called and went to the company’s office in Kowloon Tong. The other party only responded that the MTR Corporation had submitted a report to the government. .
MTR Chairman Ma Shih-hang reiterated on the radio program yesterday that the high-speed train will “must have a lot of problems” during the trial run, emphasizing that the MTR will surely announce it to the public if unusual situations occur during trial operation, affect safety, or fail to open as scheduled.
As of March, received a total of 29.8 billion yuan in claims
In addition, the progress report submitted by the MTR to the Legislative Council indicates that the overall project of the Hong Kong-Hong Kong section of high-speed rail has been completed by 99.4 per cent by the end of March this year. It is preparing for opening in September. The commissioning of the ticketing system is expected to be in the second quarter of this year. Upon completion, the existing 45 MTR train drivers have completed training and examinations and have obtained high-speed train driving licenses issued by the State Railway Administration.
The high-speed rail project received a total of 1,113 valid claims in March, amounting to about $28.9 billion, of which 306 have been resolved and about 94 have been issued. 62 million yuan.
A spokesman for the Transport and Housing Bureau said that the Electrical and Mechanical Services Department and the Highways Department are reviewing the relevant reports in detail and requested the MTR to implement the rehabilitation of the accident track as soon as possible; the EMSD and relevant government departments will verify whether the MTR has completed all railway operations properly. Safety-related tests will only allow trains to be put into service.
廣深港高鐵香港段列車上月在石崗車廠維修路軌停泊時，尾卡右邊四個車輪出軌，港鐵昨日公布最終調查結果，形容事件不尋常，相信是">"data-reactid="31"> When the Hong Kong-Shenzhen-Hong Kong high-speed rail section of Hong Kong was parked last month at the Shigang Depot maintenance rail, the four wheels on the right side of the tailgate derailed. The MTR announced the final investigation results yesterday and described the incident as unusual. I believe it is The engineering consultant company “counted the number of leaks”, ignoring that there was a bend in the track, the consultants assumed that the lateral pressure generated by the train entering the position concerned was similar to that of the straight track. The result was that under the condition of insufficient bearing force, the track was under the track. The deformation of the I-shaped rails and the structural devices resulted in the rail gauge being wider than the standard, resulting in a two- to three-turn deviation between the wheels and the rails. The MTR emphasised that the rails are all installed on concrete foundations or sleepers, while the remaining three maintenance rails are straight and similar accidents will not occur.
Ms. Li Chengji, the manager of the MTR vehicle operations (high-speed railway), released the survey results yesterday and pointed out that the engineering staff found a deviation between the wheels and the rails of a tailgate of a high-speed train on the 3rd of last month at the Shigang depot. The investigation team had a total length of 330 afterwards. The five-meter repair track No. 4 was found to have a 6.6-meter-long bend. The "gauge" of the track was wider than the standard, but the rail was still firmly on the I-beam. Therefore, it was thought that the train was undergoing a bend during trial operation. Lateral pressure occurs in the section, causing the deformation of the I-beam and widening the gauge of a small section of the rail.
Design based on past experience
He explained that the consultancy company designed and maintained the rails based on past experience. Assume that the lateral pressure is slight, but neglecting the fourth rail has a small bend. The train will make the lateral pressure rise when cornering. The four support rails all use the same support design. As a result, a derailment accident occurred. Li Shengji did not use "errors" to describe the incident, nor did he respond positively to the advising of the consultancy company. He only said that he would ask the other party to follow up the issue.
When asked whether the same accident occurred on the high-speed rail track, Li Shengji claimed that the No. 4 maintenance track was the only track supported by the I-Rail in the Hong Kong section of the HSR, and the remaining three maintenance rails in the depot were straight. Bend position. He pointed out that the MTR has decided to replace the I-shaped iron and its structural devices with concrete short walls under the No. 4 rail to improve the lateral pressure bearing capacity of the rails, while leaving enough room for maintenance personnel to enter vehicle inspection and maintenance.
The remaining 3 maintenance tracks can be dealt with after opening
Li Shengji also pointed out that the No. 4 rail will be temporarily suspended until the completion of the improvement project, emphasizing that the remaining three maintenance tracks are sufficient to meet the maintenance workload after the opening of the HSR.
It is reported that the consultancy company involved in this case is Arup Engineering Consulting Co., Ltd.. Our reporter yesterday called and went to the company’s office in Kowloon Tong. The other party only responded that the MTR Corporation had submitted a report to the government. .
MTR Chairman Ma Shih-hang reiterated on the radio program yesterday that the high-speed rail will “must have a lot of problems” during the trial run, stressing that the MTR will surely announce it to the public if unusual circumstances occur during trial operation, affect safety, or fail to open as scheduled.
As of March, received a total of 29.8 billion yuan in claims
In addition, the progress report submitted by the MTR to the Legislative Council indicates that the overall project of the Hong Kong-Hong Kong section of high-speed rail has been completed by 99.4 per cent by the end of March this year. It is preparing for opening in September. The commissioning of the ticketing system is expected to be in the second quarter of this year. Upon completion, the existing 45 MTR train drivers have completed training and examinations, and have obtained high-speed train driving licenses issued by the State Railway Administration.
The high-speed rail project received a total of 1,113 valid claims in March, amounting to about $28.9 billion, of which 306 have been resolved and about 94 have been issued. 62 million yuan.
A spokesman for the Transport and Housing Bureau said that the Electrical and Mechanical Services Department and the Highways Department are reviewing the relevant reports in detail and requested the MTR to implement the rehabilitation of the accident track as soon as possible; the EMSD and relevant government departments will verify whether the MTR has completed all railway operations properly. Safety-related tests will only allow trains to be put into service.
High-speed trains simulate slow speeds into the depot. (Screenshots of the MTR offering short films)
See photos
High-speed trains simulate slow speeds into the depot. (Screenshots of the MTR offering short films)
Li Shengji described the derailment accident as unusual. (photo by Huang Zhongmin)
See photos
Li Shengji described the derailment accident as unusual. (photo by Huang Zhongmin)
https://hk.news.yahoo.com/%E7%96%8F%E5%BF%BD%E8%A8%88%E7%AE%97%E8%BD%89%E5%BD%8E%E5 %A3%93%E5%8A%9B-%E5%BE%8C%E6%9E%9C%E5%9A%B4%E9%87%8D-%E5%B0%88%E5%AE%B6-% E8%A8%88%E6%BC%8F%E6%95%B8%E5%A5%BD%E5%85%92%E6%88%B2-214500596.html
Neglected calculation of turning pressure Serious consequences
[Oriental Daily OrientalDaily]
Oriental Daily OrientalDaily
3.6k person tracking
Oriental Daily
May 29, 2018 5:45am
Derailment occurred during trial operation of the high-speed rail.
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Derailment occurred during trial operation of the high-speed rail.
When the project engineer plans to "arbitrary"
He also pointed out that when calculating lateral pressure, there are mainly three considerations. One is the weight of the vehicle, the second is the arc of the bend, and the third is the speed of the vehicle. Designers should have mastered the actual data in the design and also need a certain safety factor. Exceeding estimates. As for the MTR Corporation's proposal to replace I-beams with concrete short walls for remediation, he believes that the use of I-steel or concrete is not a big difference. "The most important thing is to calculate the mechanics clearly, and both types of support can be strong."
Lu Xueqiang, a member of the Institute of Mechanical Engineers of the United Kingdom, also pointed out that there was no possibility of "counting losses." "All the bends must be calculated for lateral pressure, especially for heavy machinery, with no good show, and the assessment is poor!" When mistakenly thought that the bending position is very slight, so unreasonable to bend the position, it also means that the consequences of neglecting to calculate the lateral pressure of the turning position are very serious. Fortunately during the trial operation, it was hoped that the responsible engineer would step up the check. For concrete instead of I-iron, he believes that reinforcement must be added to the concrete to ensure sufficient bearing capacity.
【本報訊】高鐵列車試運行期間車輪「出軌」，港鐵直指出軌原因是顧問設計該段軌道承托裝置時「計漏數」所致。">"data-reactid="31">[Reported by the newspaper] During the trial operation of the HSR train, the wheels were "derailed." The reason why the MTR train pointed out the rails was due to the "counted number of leakages" when the consultants designed the track supporting equipment. The former president of the Institute of Engineers, Zhang Zhigang, believes that consultants' "counting" is very rare because the consultants must consider the lateral force generated by the curved track. "Wait if you turn left when you ride a car, the individual will tend to be right. Although complex calculations are needed, there are very few cases of "counting mistakes" or "counting leaks."
When the project engineer plans to "arbitrary"
He also pointed out that when calculating lateral pressure, there are mainly three considerations. One is the weight of the vehicle, the second is the arc of the bend, and the third is the speed of the vehicle. Designers should have mastered the actual data in the design and also need a certain safety factor. Exceeding estimates. As for the MTR Corporation's proposal to replace I-beams with concrete short walls for remediation, he believes that the use of I-steel or concrete is not a big difference. "The most important thing is to calculate the mechanics clearly, and both types of support can be strong."
Lu Xueqiang, a member of the Institute of Mechanical Engineers of the United Kingdom, also pointed out that there was no possibility of "counting losses." "All the bends must be calculated for lateral pressure, especially for heavy machinery, with no good show, and the assessment is poor!" When mistakenly thought that the bending position is very slight, so unreasonable to bend the position, it also means that the consequences of neglecting to calculate the lateral pressure of the turning position are very serious. Fortunately during the trial operation, it was hoped that the responsible engineer would step up the check. For concrete instead of I-iron, he believes that reinforcement must be added to the concrete to ensure sufficient bearing capacity.
The Shigang depot broke out of a high-speed train derailed last month.
See photos
The Shigang depot broke out of a high-speed train derailed last month.
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