某连续刚构桥主桥考虑损伤影响的有限元模拟  

Finite Element Simulation of a Continuous Rigid Frame Bridge Considering Structural Damage Effect

作　　者：李敏峰[1] 吴娇媚[2] 陈长华[3] LI Min-feng;WU Jiao-mei;CHEN Chang-hua(Hebei Institute of Architecture and Civil Engineering,Zhangjiakou,Hebei 075000;Chongqing Design Institute of Transport Co.,LTD,China Merchants Group,Chongqing,400067;Shihuang Management Office of Hebei Expressway,Shijiazhuang,Hebei 052360)

机构地区：[1]河北建筑工程学院,河北张家口075000 [2]招商局重庆交通科研设计院有限公司,重庆市400067 [3]河北省高速公路石黄管理处,河北石家庄052360

出　　处：《河北建筑工程学院学报》2020年第4期46-50,共5页Journal of Hebei Institute of Architecture and Civil Engineering

基　　金：张家口市科学技术和地震局项目(1621006B);2016校基金项目(2016XJJYB03)。

摘　　要：根据某连续刚构桥主桥的检测结果,拟对该桥进行有限元建模分析。采用Midas FEA仿真软件建立有限元模型,考虑运营多年的桥梁损伤状态,通过调整混凝土强度、预应力大小和梁体刚度三个参数调整模型的准确性,建立有效的损伤模型,以确保采用该模型进行后续分析的有效性。结果表明,该损伤模型具有较好的模拟效果,可以进行后续的加固分析。Based on the detection results of the main bridge of a continuous rigid frame bridge,the finite element modeling analysis of the bridge is proposed.The finite element model is established by Midas FEA.Considering the damage state of the bridge for many years,the accuracy of the model is adjusted by adjusting the concrete strength,pre-stress size and the stiffness of the beam body,and an effective damage model is established to ensure the validity of the subsequent analysis with the model.The results show that the damage model has good simulation effect and can be followed by reinforcement analysis.

关 键 词：有限元 桥梁损伤 预应力 梁体刚度 

分 类 号：U44[建筑科学—桥梁与隧道工程]