Experimental study on bearing capacity of stiff composite pile in peat soil
Peat soil is a special soft soil foundation in Yunnan,which makes the choice of pile foundation become the top priority.Stiff composite pile is a new type of pile which is composed of cement-soil pile and corresponding core pile.It greatly improves the bearing capacity and has good effect on soft soil foundation.In this paper,through indoor model test and Midas GTS NX finite element numerical analysis,the load-settlement relationship of stiff com-posite piles with different core pile lengths and different section sizes is studied.The test results show that the stiff composite pile has the characteristics of large diameter pile in peat soil layer,and the load-settlement curves show a slow drop trend.The core pile bears the main load.The settlement displacement decreases by about 8％when the core pile expands by 12％,and the settlement displacement decreases by about 20％when the core pile length in-creases by 33％.
peat soilstiff composite pileindoor model testfinite element numerical simulation
NETL
NSTL
万方数据
维普
