Response spectrum-based method for calculating the reaction force of piers subjected to truck collisions

Response spectrum-based method for calculating the reaction force of piers subjected to truck collisions
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基于响应谱的卡车碰撞桥墩反力计算方法

DOI:
10.1016/j.engstruct.2017.07.092
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发表时间:
2017-11
影响因子:
5.5
通讯作者:
Yan Xiao
Yan Xiao
中科院分区:
工程技术2区
文献类型:
--
作者:
Lin Chen;Sherif El-Tawil;Yan Xiao

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一个先前提出的和验证耦合质量弹簧阻尼器(CMSD)模型用于模拟卡车碰撞桥墩的主要参数影响的问题。结果表明,该模型可以简化为一个等效的两个自由度的动态系统,捕捉的基本力学特性的影响问题。将汽车发动机与货物碰撞产生的冲击需求分开处理,提出了简单统一的反应谱。该谱适用于设计办公室的情况,以确定由于卡车碰撞的反应。一个建议的设计过程进行了验证,使用CMSD的结果,它具有合理的精度。
A previously proposed and validated coupled mass-spring-damper (CMSD) model for simulating truck collisions on bridge piers is used to gain insight into the main parameters affecting the problem. It is shown that the model can be simplified into an equivalent two-degree-of-freedom dynamic system that captures the basic mechanical characteristics of the impact problem. By treating the impact demand caused by the colliding truck’s engine and cargo separately, simple and unified response spectra are proposed. The spectra are suitable for use in a design office situation to determine the reaction due to truck collision. A proposed design procedure is validated using the CMSD results and it is shown that it has reasonable accuracy.
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