徐变模式对连续梁桥预拱度计算的影响分析

Analysis on Influence of Creep Model on Camber Calculation of Continuous Girder Bridge

混凝土徐变是混凝土连续梁桥预拱度计算的一项主要内容,该文从徐变模式出发,综合比较了国内公路新旧桥规徐变模式的差异,以某高速公路上的一座大跨连续梁桥为项目背景建立有限元模型,对不同徐变模式下的预拱度计算结果进行对比,得到了一些结论具有一定的工程借鉴意义。

The concrete creep is a major content to calculate the camber of the concrete continuous girder bridge. From the creep model,the article comprehensively compares with the creep model difference between the old and new highway bridge standards in China. Based on the background of a long-span continuous girder bridge of an expressway,the finite element model is set up to contrast the calculated results of the camber under the different creep models. Some achieved conclusions have some projects reference.