国内外近三年桥梁坍塌事故原因与经验教训

Causes and Lessons of Bridge Collapse Accidents in Past Three Years at Home and Abroad

近年来,桥梁坍塌事故时有发生,桥梁坍塌事故在造成经济损失和人员伤亡的同时,往往会造成巨大的社会影响。对国内外2017~2019年桥梁坍塌事故发生的时间、地点、伤亡人数及原因进行了统计分析。结果发现,国内建设期桥梁事故大于运营期事故数,桥梁建设期事故主要由施工过程中的失稳造成,桥梁运营期事故主要原因是运营养护不当及超载。国外新建桥梁的事故数少于运营阶段桥梁事故数,桥梁运营期事故大部分与养护不当相关。

In recent years, the accidents of bridge collapse happen occasionally. The accidents of bridge collapse cause the economic losses and human casualties, and often have a huge social impact. The time,sites, casualties and causes of bridge collapse accidents in 2017~2019 at home and abroad are statistically analyzed. The results show that the bridge accidents in the construction period in China are more than the accidents in the operation period. The bridge accidents of construction period are mainly caused by the instability in the construction process. The main causes of bridge accidents in operation period are the improper operation maintenance and overload. The accidents of new foreign bridge are less than the bridge accidents in operation period. The most of bridge accidents in operation period are related to the improper maintenance.