花岗岩残积土地区夯扩桩的应用与研究  

RESEARCH AND APPLICATION OF RAMMING EXPANDED PILE IN GRANITE DEBRIS SOIL REGION

作　　者：万超[1] 姚裕昌[1] 刘献江 

机构地区：[1]南昌有色冶金设计研究院深圳分院

出　　处：《建筑技术》1999年第3期163-165,共3页Architecture Technology

摘　　要：珠海某工程地基为花岗岩残积土，具有较大的承载潜力，用无桩靴夯扩桩可大幅度提高其承载力。试桩结果表明，珠海地区花岗岩残积土的夯扩效果很好。长期以来夯扩桩未在该地区推广，其原因是对桩身混凝土质量、试桩桩头制作等方面重视不够。The foundation of a Zhuhai project has been located in granite debris soil region where a big bearing capacity is existing.Application of ramming expanded pile without pile shoe would increase the bearing capacity of granite debris soil region considerably.Test pile practices have well demonstrated that application of ramming expanded pile in granite debris soil region has been gained in very good result.Nevertheless,the ramming expanded pile has not yet been developed and popularized in granite debris soil region for a long time.It is due to the negligence of pile-shaft' s concrete quality and the carelessness of making pile-tips etc.

关 键 词：花岗岩残积土 夯扩桩 试桩 

分 类 号：TU473.14[建筑科学—结构工程] TU753.3[建筑科学—土工工程]