Failure Analysis of a Girder Bridge Collapse under Eccentric Heavy Vehicles
Failure Analysis of a Girder Bridge Collapse under Eccentric Heavy Vehicles
复制标题
重型偏心车辆作用下梁桥倒塌破坏分析
DOI：
10.1061/(asce)be.1943-5592.0000964
复制
发表时间：
2016-07
影响因子：
3.6
通讯作者：
Ruan X
中科院分区：
文献类型：
--
作者：
Shi X;Zhou Z;Ruan X
摘要近年来，中国地区连续发生多起梁式桥在偏心重型车辆作用下发生的意外倒塌事故。为了探讨倒塌的原因和机理，对一座倒塌的六跨钢筋混凝土连续箱梁桥进行了介绍和分析。通过收集事故现场信息，确定了不同的失效形式。通过简化的力学计算和有限元模拟，确定了事故过程中桥梁在荷载作用下的结构响应特征。最后，再现了事故发生的顺序，明确了导致结构失效的控制因素。研究表明，桥梁事故不仅由整体倾覆失稳问题引起，还与构件强度失效有关。在极端偏心车辆荷载作用下，大变形产生明显的二阶效应。明显的横向水平..。
AbstractIn recent years, several accidental collapses of girder bridges have occurred under the influence of eccentric heavy vehicles in China. To explore the causes and mechanisms of the collapses, a collapsed six-span, RC, continuous box-girder bridge was introduced and analyzed. By gathering onsite information about the accident, different failure forms were determined. Simplified mechanical calculations and finite-element simulations were used to determine the characteristics of the structural response caused by the load on the bridge during the accident. Finally, the sequence of the accident was reproduced, and the controlling factors leading to the structure failure were clarified. This study suggests that bridge accidents are caused not only by instability issues of integral overturning but also by strength failures of the components. Under the circumstances caused by an extreme eccentric vehicle load, the large deformation resulted in an apparent second-order effect. Noticeable lateral horizontal ...
DOI：
10.1061/9780784413616.217
发表时间：
2014-06
期刊：
--
影响因子：
--
作者：
Weibing Peng;Fei Dai;E. Taciroğlu
通讯作者：
Weibing Peng;Fei Dai;E. Taciroğlu