砾石桩复合地基桩土应力比确定方法探讨  

Discussion on Method Determining Pile-soil Stress Ratio of Gravel Pile Composite Foundation

作　　者：任毅 周琼 裘友强 刘军勇[3] REN Yi;ZHOU Qiong;QIU Youqiang;LIU Junyong(Yichang Bureau of Housing and Urban-Rural Development, Yichang 443000, Hubei, China;Yiling District Urban Construction Project Office of Yichang, Yichang 443100, Hubei, China;CCCC First Highway Consultants Co., Ltd., Xi'an 710075, China)

机构地区：[1]宜昌市住房和城乡建设局,湖北宜昌443000 [2]宜昌市夷陵区城市建设项目办公室,湖北宜昌443100 [3]中交第一公路勘察设计研究院有限公司,西安710075

出　　处：《路基工程》2019年第6期18-23,34,共7页Subgrade Engineering

基　　金：国家重点研发计划(2016YFC0802203);中国交建科技研发项目(2014-ZJKJ-PTJS07)

摘　　要：依托西北地区某盐渍化软土地基处治试验段,对砾石桩复合地基桩土应力比进行了讨论,提出桩土应力比简化计算公式,同时结合数值分析模型,对比分析桩土应力比与主要因素之间的关系,并对各影响因素下桩土应力比修正系数ξ的取值范围进行界定。Based on a test section for salinized soft foundation treatment in northwest China, the method determining the pile-soil stress ratio of gravel pile composite foundation was discussed. The simplified formula calculating the pile-soil stress ratio was proposed and, with numerical analysis model, the relations between the ratio and the main factors were compared and analyzed, then the value of correction coefficient ξ with each influencing factor taken into consideration was defined respectively.

关 键 词：砾石桩 复合地基 桩土应力比 计算公式 影响因素 修正系数 

分 类 号：TU472.3+5[建筑科学—结构工程]