上海地铁遭起重机侵入造成列车受损，事故原因公布

Core Points - The incident on December 22, 2024, involved a crane accident during the construction of the Shanghai Hujia Expressway-Jiamin Elevated Connection Line, resulting in damage to a train on Line 11 of the Shanghai Metro [1][3] - The direct economic loss from the accident is approximately 18.31 million yuan [1] - The accident was classified as a major safety responsibility incident due to violations of construction plans and operational procedures [3] Incident Details - The accident occurred at around 7:30 AM when the Shanghai Greenland Steel Structure Co., Ltd. was conducting a box beam hoisting operation [4] - At 7:55 AM, a 260-ton crawler crane tipped over towards the metro line, leading to a collision with a train traveling at 91.2 km/h [4][5] - The train's emergency braking system was activated, and it came to a stop 19 seconds after the collision [5] Causes of the Accident - The accident was primarily caused by discrepancies in crane selection and positioning, leading to a lack of coordination during the dual crane operation [6] - The 260-ton crane was overloaded and exceeded the allowable horizontal level, resulting in excessive lateral forces that caused the crane's arm to collapse [6] - Specific issues included the use of an incorrect crane model, lack of synchronization between the two cranes, and failure to adhere to safety protocols [6] Identified Problems - The subcontractor failed to implement a comprehensive safety responsibility system, and the project manager was often absent [7] - There were violations of operational procedures, including improper crane positioning and lack of supervision during the hoisting operation [7] - The main contractor did not ensure proper safety management and failed to notify the metro company about the construction activities [8] Recommendations for Accountability - Criminal liability is suggested for several individuals involved, including the crane operator and project technical leader [9] - Administrative penalties are recommended for the subcontractor, crane rental company, and main contractor, as well as their respective leaders [10]