大厚度自重湿陷性黄土处理深度研究  

Research of Thickness Collapsible Loess Under Overburden Pressure

作　　者：周仁 王鸿运 张艳军 牛冠超 ZHOU Ren;WANG Hongyun;ZHANG Yanjun;NIU Guanchao(Wuhan Survering-geotechnical Research Institute Co.,Ltd.of MMC,Wuhan,Hubei 430080,China)

机构地区：[1]中冶集团武汉勘察研究院有限公司,湖北武汉430080

出　　处：《施工技术》2018年第16期8-11,88,共5页Construction Technology

基　　金：中冶集团科研课题:湿陷性黄土场地轻型建(构)筑物地基处理技术研究(中冶集鉴字[2017]第48号)

摘　　要：在兰州新区地下综合管廊一期地基处理工程中,自重湿陷性黄土较厚,为了验证不同桩长素土挤密桩的地基处理效果,设置3个试验区进行相关研究和分析;通过现场增湿、挤密及浸水试验,结合桩身的压实系数、桩间土的挤密系数、桩间土湿陷性等监测数据,确定了安全经济的地基处理方案。In the foundation treatment project for underground utility tunnel of Lanzhou new district,because the self-weight collapsible loess is thicker,in order to verify the effects of different length of soil compaction pile in the thickness collapsible loess,three tests were set up for analyzing. By using the wetting,compacting,flooding tests and the monitoring data in the field of piles＇ compaction coefficient,soil collapsibility between piles and so on,the foundation treatment scheme in the thickness collapsible loess was determined.

关 键 词：地基 湿陷性黄土 素土挤密桩 增湿试验 研究 

分 类 号：TU475.3[建筑科学—结构工程]