基于荷载试验的刚架拱桥修正模型计算评估法

文章针对刚架拱桥的承载能力评估问题进行研究,提出刚架拱桥承载能力评估方法——动静载试验评估法,利用随机振动的动力测试的数据,通过基于敏感性设计参数模型修正法对刚架拱桥有限元模型进行修正,并结合动静载试验实测数据与修正后的模型理论计算值进行对比分析,使有限元模型更好地反映逼近损伤后的刚架拱桥整体结构受力特性,从而对钢筋混凝土刚架拱桥承载能力进行评估。

Calculation and Evaluation Method of Rigid Framed Arch Bridge Correction Model Based on Load Test

This article studied the carrying capacity evaluation problems of rigid framed arch bridge,proposed the carrying capacity evaluation method of rigid framed arch bridge-dynamic and static load test evaluation method,the finite element model of rigid framed arch bridge was corrected by using the dynamic test data of random vibration and through the sensitivity-based design parameter model correction method,and it conducted the comparative analysis in combination with the actual measured data of static and dynamic load test and the theoretical calculation values of corrected model,so that the finite element model can better reflect the overall structure force characteristics of rigid framed arch bridge when approaching the damage,and thus evaluating the carrying capacity of reinforced concrete rigid framed arch bridge.