摘要
Abstract
Taking the treatment of thick soft soil in Shouxi Lake flood Sluice by PHC pipe pile composite foundation as an engineering case,the pile length,pile diameter and arrangement are determined by theoretical calculation from two aspects of composite foundation bearing capacity and settlement control.The plastic concrete cushion is innovatively adopted between the bottom plate and the pile,so that the pile-soil joint action of the composite foundation is enhanced,the integral action and the anti-deformation capacity of the composite foundation are improved,and the anti-seepage stability of the sluice foundation is ensured;Through the quality detection of the pile composite foundation and the safe operation of the project,it shows that the pile structure is complete,the bearing capacity meets the design requirements,and the effect of the composite foundation is very good.The treatment technology of PHC pile composite foundation can be applied to the treatment of thick soft soil foundation of hydraulic structures such as large and medium-sized pumping stations and sluices,which can effectively solve the problems of bearing capacity,settlement and horizontal deformation control and seepage stability,speed up the construction progress,shorten the construction period and save the construction cost.This foundation treatment method has obvious technical and economic advantages,and has wide popularization and application prospect.关键词
PHC管桩复合地基/塑性砼褥垫层/厚层软弱土地基处理Key words
PHC pile composite foundation/plastic concrete mattress layer/thick soft soil foundation treatment分类
建筑与水利
