Experiments of Multi-element Composite Foundation with Steel Pipe Pile and Gravel Pile  

作　　者：王仙芝 郑俊杰 

机构地区：[1]School of Civil Engineering and Mechanics, Huazhong University of Science and Technology

出　　处：《Journal of Southwest Jiaotong University(English Edition)》2008年第3期254-259,共6页西南交通大学学报（英文版）

基　　金：The National Natural Science Foundation of China (No.50478090)

摘　　要：A set of serf-developed apparatus for foundation physical model were utilized to conduct model tests of the multi-element composite foundation with a steel pipe pile and several gravel piles. Some load-bearing characteristics of the multi-element Composite foundation, including the curves of foundation settlement, stresses of piles, pile-soil stress ratio, and load-sharing ratio of piles and soil, were obtained to study its working performances in silty sand soil. The experimental results revealed that the multi-element composite foundation with steel pipe pile and gravel pile contributed more than the gravel pile composite foundation in improving the bearing capacity of the silty fine sand.A set of serf-developed apparatus for foundation physical model were utilized to conduct model tests of the multi-element composite foundation with a steel pipe pile and several gravel piles. Some load-bearing characteristics of the multi-element Composite foundation, including the curves of foundation settlement, stresses of piles, pile-soil stress ratio, and load-sharing ratio of piles and soil, were obtained to study its working performances in silty sand soil. The experimental results revealed that the multi-element composite foundation with steel pipe pile and gravel pile contributed more than the gravel pile composite foundation in improving the bearing capacity of the silty fine sand.

关 键 词：Steel pipe pile Gravel pile Model test Multi-element composite foundation Pile-soil stress ratio Load-sharing ratio 

分 类 号：TU473.1[建筑科学—结构工程]