高架连续梁桥的成桥静载试验分析

摘要

In order to analyze the bridge’ s mechanical force characteristics of the viaduct continuous bridge,a 3 D simulation analysis has been done for the static load test of one prestressed concrete continuous beam bridge based on the finite element simulation platform of ABAQUS,and the prestressed steel strand’ precom-pression on concrete was simulated through the cable model temperature drop method,on the basis of which the numerical calculation was done for the static load effect of the bridge. The analysis results show that the calculated values highly fits the measured values of the bridge test site after making a comparison between them . The effectiveness of calculation and simulation of bridge prestress effect is analyzed by using the method of cable mode temperature drop in the calculation and analysis. The research results have provided reference for the future projects.%为分析高架连续桥梁的成桥受力特性，基于ABAQUS有限元仿真计算平台对某预应力混凝土连续梁高架桥的成桥静载试验进行全桥三维仿真，并通过索模温降法来模拟预应力钢绞线对混凝土的预压作用，在此基础上对桥梁静载效应进行了数值计算。计算值对比成桥试验现场实测值，发现两者契合度较高。计算分析表明了采用索模温降法进行桥梁预应力效应计算仿真的有效性，对今后工程具有借鉴意义。