钢纤维混凝土承台主要参量对承载力的影响

The effect of the main parameters of caps of steel fiber concrete on bearing capacity

根据 30个模型率为 1∶ 5的混凝土和钢纤维混凝土二桩承台试件的试验情况 ,通过改变钢纤维体积率、承台有效厚度、配筋量及配筋方式 ,观察和记录了桩承台裂缝开展与分布、承台底部中点挠度、侧边混凝土应变和底部受拉钢筋应变 ,分析了影响钢纤维混凝土二桩承台承载能力的主要参量。

According to the results of testing thirty two pile specimens of stecl fiber concrete, and by changing the volume ratio of steel fiber, the effective thickness of caps, and the ration and the way of providing steel reinforcement, the development and distribution of cracks in pile caps, the midpoint flexibility in the bottom of caps, the strain in the side of concrete and the strain in the bottom of steel reinforcement are observed and recorded The main parameters which affect the bearing capcity of two pile caps of steel fiber concrete are analyzed, and the results are the basis for the further study of calculating the bearing capacity of two pile caps of steel fiber concrete