组合桩土拱效应的试验模型分析

Experiment model analysis on soil arching effect of compound pile

通过试验模型分析了砂质粘土的桩间距、含水率等因素对土拱效应的影响，结果表明：含水率为15．2％～30．7％的粘土中。4倍-6倍桩宽为合理桩间距范围，桩顶位移随桩间距的增大而增大。

This article analyzes the impacts of pile spacing and moisture capacity of sandy clay on soil arching effect by testing model. Results show that ： if the moisture capacity of sandy clay is 15.2% - 30.7% , 4 times - 6 times pile width will be the reasonable pile spacing scope, and pile cap displacement will increase with the pile spacing increasing.