钢纤维混凝土四桩厚承台主要参量对承载能力的影响

Main Parameters Affecting Bearing Capacity of SFRC Four pile Caps

依据 1 5个大尺度钢纤维混凝土四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四桩承台承载能力的主要参量。分析结果为进一步研究钢纤维混凝土四桩承台的抗冲切、抗剪切及配筋计算提供了试验基础。

According to the test results of 15 large size specimens of SFRC four pile caps,crack status, the midpoint flexibility of pile caps bottom,concrete strain side and steel strain bottom are observed, and primary influencing factors of SFRC four pile caps are analyzed by changing bulk factor,effective thickness, quantity of distributed steel and steel laying mode The analysis results will offer a base studying a cap suffering from punching and shearing and for computing reinforcing quantity