摘要
本文介绍钢筋混凝土板条梁和钢筋混凝土板的静力性能试验。根据板混凝土和钢筋的实测应变,推算跨中截面沿板跨中心线方向的弯矩分布场。用板条梁各阶段的实测弯曲刚度,视板的裂缝方向作适当的折减,并考虑泊松比影响,对两对边简支、两对边自由的钢筋混凝土板,其中点承受局部均布荷载时进行有限元全过程分析。计算结果与试验结果符合较好。
This paper describes the static test of four RC beams and four RC slabs.According to the measured strains of concrete and reinforcement steel, the moments distribution of the section along the half span central line direction is calculated.By using the values of the tested beam bending rigidities as computational parameter which is properly modified based upon the slab's crack direction and the Poisson's ratio effect, nonlinear analysis of slabs under concentrated load with two opposite sides simply supported and other two opposite sides free is conducted by finite element method.The computed results agree well with the testing ones.
