Concorde Overpass Collapse: Structural Aspects
Concorde Overpass Collapse: Structural Aspects
复制标题
协和式立交桥倒塌：结构方面
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
W. D. Cook
中科院分区：
文献类型：
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作者：
D. Mitchell;J. Marchand;P. Croteau;W. D. Cook
本文介绍了蒙特利尔北部拉瓦尔的协和式立交桥，穿越19号高速公路，倒塌的结构方面。讨论了悬臂厚板破坏后的原设计和加固措施。从测试结果的模拟部分的桥梁与设计和建成的细节。通过使用各种桥梁设计规范来确定设计力，对结构分析结果进行了比较。从非线性有限元分析的结果，模拟混凝土劣化，被用来解释的原因，基本上是其自重下的厚悬臂板在36年的服务。
This paper describes the structural aspects of the collapse of the Concorde overpass, crossing Autoroute 19, in Laval, north of Montreal. The original design and the reinforcing details for the thick cantilever slab that failed are discussed. Results from testing a simulated portion of the bridge with as-designed and as-built details are presented. The structural analysis results, by using various bridge design codes to determine the design forces, are compared. The results from nonlinear finite-element analysis, simulating the concrete deterioration, are used to explain the cause of failure of the thick cantilever slab under essentially its self-weight after 36 years in service.