Structural performance evaluation of a precast prefabricated bridge column under vehicle impact loading
Structural performance evaluation of a precast prefabricated bridge column under vehicle impact loading
复制标题
DOI：
10.1080/15732479.2013.767841
复制
发表时间：
2014-03
影响因子：
3.7
通讯作者：
C. Chung;Jungwhee Lee;Jong Ho Gil
中科院分区：
文献类型：
--
作者：
C. Chung;Jungwhee Lee;Jong Ho Gil
本研究提出了数值分析方法来分析桥梁柱在各种冲击载荷条件下的结构性能。对汽车碰撞仿真的参数进行了研究，确定了碰撞载荷-时间函数。根据碰撞仿真结果，提出并验证了五点分段线性近似。将所提出的荷载函数应用于两种不同类型桥墩的材料非线性有限元分析，即在相同荷载条件下设计的现浇钢筋混凝土桥墩和预制桥墩。利用动力数值分析的结果对所考虑的桥墩的动力性能进行了比较。此外，韩国桥梁设计规范和AASHTO LRFD桥梁设计规范中定义的车辆碰撞的静态设计载荷被应用于分析桥墩的动态分析结果。
In this study, the numerical analysis method was proposed to analyse the structural behaviour of bridge columns under various impact loading conditions. A parametric study of vehicle impact simulation was carried out to determine the impact loading-time functions. According to the impact simulation results, five-point piecewise linear approximation is proposed and validated. The proposed loading function was applied to the material nonlinear finite element analyses of two different types of bridge piers, the cast-in-place reinforced concrete bridge columns and the prefabricated bridge columns, which were designed under the same loading conditions. The dynamic performances of the considered bridge piers are compared using the results of dynamic numerical analyses. Also, the static design loadings of a vehicle crash defined in the Korean bridge design code and AASHTO LRFD Bridge Design Specifications were applied to analyse the results of the dynamic analyses of the piers.