波纹钢腹板体外预应力组合梁全过程分析

Ultimate strength analysis and test analysis for externally prestressed composite beams with corrugated steel webs

为研究波纹钢腹板体外预应力组合梁从加载到破坏全过程的力学性能 .将波纹钢腹板经等效处理计入到梁的整体抗弯分析之中 ,通过截面变形曲率沿纵向积分求解梁体变位 ,同时建立体外索与梁体变位的变形协调方程 ,采用反复迭代法求解梁体在任意荷载下的变形和应力 ,分析中计入了材料非线性影响 ,并在此基础上编制全过程分析程序 .最后分析了波纹腹板对梁抗弯能力的影响 。

The mechanical behavior of externally prestressed composite beams with corrugated steel webs is analysed using an all the way through the nonlinear analysis program with the nonlinear influence of material taken into account. Stress and strain of concrete, reinforcement and tendon are obtained for the whole process from loading to failure and the bending capability of corrugated steel webs is calculated and evaluated.