基于静力法桥梁影响面的车辆效应模拟方法  

Numerical Simulation Method of Bridge Influence Surface Based on Static Method

作　　者：高志兴 李明 GAO Zhi-xing;LI Ming(Jiangsu Branch of CCCC Highway Consultants Co.,Ltd.,Nanjing 210012,China;JSTI Group Co.,Ltd.,Nanjing 211112,China)

机构地区：[1]中交公路规划设计院有限公司江苏分公司,南京市210012 [2]苏交科集团股份有限公司,南京市211112

出　　处：《北方交通》2020年第2期19-23,共5页Northern Communications

摘　　要：车辆载荷的准确计算是中小桥梁安全的基础,传统上采用纵向影响线和横向分布系数车辆载荷的计算方法进行车辆响应的模拟计算,为满足更为精细化的需求,提出一种基于APDL的影响面数值求解方法。以文山桥为工程依托进行影响面数值计算,并对关注部位计算结果进行可视化处理,直观反映关注部位响应和荷载位置变化之间的关系,基于影响面模拟车辆响应,验证了该方法的准确性和可行性。通过对桥梁影响面的求解,得到更为精准的三维结构响应结果,为准静态影响面的桥梁快速评估方法奠定了基础,具有很好的工程前景。Accurate calculation of vehicle load is the basis for the safety of small and medium bridges.The calculation of the vehicle response is conventionally performed using the calculation method of the longitudinal influence line and the lateral distribution coefficient vehicle load.In order to meet the more refined requirements,a numerical solution method based on APDL is proposed.The WenshanBridge is used as the project to carry out the numerical calculation of the influence surface,and the visualization of the calculation results of the attention part is visualized to reflect the relationship between the attention part response and the load position change.The vehicle response is simulated based on the influence surface.The accuracy and feasibility of the method are verified.By solving the influence surface of the bridge,the more accurate three-dimensional structural response results are obtained,which lays a foundation for the rapid evaluation method of the bridge with quasi-static influence surface and has a good engineering prospect.

关 键 词：影响面 数值模拟 静力法 钢筋混凝土桥梁 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]