桥梁结构极限承载力分析的截面内力塑性系数法

The plastic-coefficient-method of element secton internal force on bridge ultimate load analysis

基于 U.L.列式单元增量平衡方程 ,提出了一种建立钢筋混凝土梁单元弹塑性刚度矩阵的新方法——单元节点截面内力塑性系数法 ,并编制了相应的计算程序。用该方法计算了两个大型单拱面预应力混凝土系杆拱桥模型。结果表明 。

The elasto plastic matrix of space beam element to calculate the bridge ultimate load is established and the program is compiled. This method is based on the U.L. formula and the plastic coefficient method of element section internal force. The analysis results and the experiment results of two test models have a good agreement, the reliability of the method and program is tested.