Finite Element Analysis of Cushion Thickness and Ultimate Bearing Capacity of Lime Soil Pile Composite Foundation

被引：1

作者：

Wei, Zisen ^{[1
]}

Zhang, Yongmou ^{[1
]}

Peng, Donghui ^{[1
]}

机构：

[1] Key Lab Rd & Bridge & Underground Engn Gansu Pro, Lanzhou 730070, Gansu, Peoples R China

来源：

ADVANCES IN INDUSTRIAL AND CIVIL ENGINEERING, PTS 1-4 | 2012年 / 594-597卷

关键词：

Lime Soil Pile; Composite Foundation; Cushion; Ultimate Bearing Capacity; Finite Element;

D O I：

10.4028/www.scientific.net/AMR.594-597.565

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The static load test of composite foundation was simulated by using the nonlinear finite element programs, and the changes of the pile-soil stress ratio and the pile and soil settlements as well as the plastic deformation of composite foundation were analyzed. The simulation results show that: the cushion of flexible pile composite foundation can effectively regulate the pile-soil stress ratio and make the bearing capacity of the lime soil pile and the soil between piles give full play at the same time. The cushion has a distinct role in reducing the pile settlements, however, has little effect in reducing the soil settlements. The reasonable cushion thickness is about 300mm. The composite foundation will emerge local shear failure when it reaches the ultimate bearing capacity. Reducing the pile spacing can increase the ultimate bearing capacity, and the rate of increase shows a gradually increasing trend.

引用

页码：565 / 569

页数：5