拼装误差对箱型截面拱桥拱圈强度的影响分析

Analysis of the Influence of Assembly Errors on the Box Section Arch Strength of Arch Bridge

以成贵铁路西溪河大桥为工程背景,利用ANSYS11.0模拟分析拱圈拼装过程中产生的纵向偏差误差及截面偏差角对拱圈强度的影响.结果表明:纵向偏差及截面偏差角均会影响桥梁拱圈的强度;桥梁拱圈内的应力值随纵向偏差及截面偏差角的增大而增大;截面偏差角对桥梁拱圈强度的影响要大于纵向偏差对桥梁拱圈强度的影响.

With the Xixi River Bridge on the route of Chengdu-Guiyang Railway as engineering background,this paper uses ANSYS11.0 to analyze the influence of longitudinal error and cross section deviation angle on the strength of the arch.The research result shows that:①longitudinal error and cross section deviation angle will influence the strength of bridge arch;②the bridge arch stress value increases as longitudinal error and cross section deviation angle increase;③the influence of cross section deviation angle on the strength of the bridge arch is greater than that of longitudinal deviation.