强风化岩中开口钢管桩承载力影响参数实测研究  

Experimental Research of Ultimate Capacity of Open-ended Steel Pile in the Strong-weathered Rock

作　　者：梁国栋[1] 谭德银[2] 刘梅梅[2] 桑登峰[2] 

机构地区：[1]中交四航局第二工程有限公司,广东广州510300 [2]中交四航工程研究院有限公司,广东广州510230

出　　处：《建筑科学》2016年第3期19-22,共4页Building Science

摘　　要：单桩承载力的确定是桩基设计中的首要问题,对大直径开口钢管桩单桩承载力的预估,桩周侧摩阻力标准值qsk的取值至关重要。通过对44根开口钢管桩进行多次锤击沉桩和高应变动载测试的实测数据,按照参数法计算出开口钢管桩在强风化岩中的极限侧摩阻力标准值,为今后类似地基中基桩承载力计算提供参考。The bearing capacity of pile foundation is the most important issue,and the side resistance qskis the main portion to estimate the bearing capacity of the large diameter open-ended steel pile. In this paper,the standard value of the ultimate side resistance of the open-ended steel pile in the strong-weathered rock is calculated by parametric method,based on the measured data of the high strain dynamic load test for the 44 open-ended steel pile using pile driving method. The results provide references for similar soils improvement in the future.

关 键 词：强风化岩 开口钢管桩 侧摩阻力 端阻力 土体闭塞效应系数 

分 类 号：TU473.11[建筑科学—结构工程]