摘要
西北地区的湿陷性黄土厚度大,湿陷性强,目前对湿陷性黄土地基处理的理论研究仍然无法满足工程实践的需求.如何经济、高效、合理地处理湿陷性黄土地基成为西北地区工程建设的热点问题.通过西北某综合管廊工程挤密桩法处理自重湿陷性黄土地基的现场试验以及室内土工试验,得出该地区综合管廊工程挤密桩法处理自重湿陷性黄土地基的建议桩长、桩间距、以及桩身填料.通过研究发现使用挤密桩法挤密后的地基土体湿陷表现形式,并由此提出针对高填方湿陷性黄土地基分层铺设防水土工布的地基处理方法.
The wet-collapsible loess in northwest area features great thickness and strong collapsibility.At present,theoretical study of its foundation treatment still has no way of meeting the needs of engineering practice.How to deal with wet-collapsible loess foundation economically,high-effectively efficient and reasonable has become a key issue in engineering project of northwest area.By means of field test of self-weight wet-collapsible loess foundation and indoor geotechnical test,a recommended pile length,pile spacing,and pile packing is respectively obtained for an integrated pipe-corridor project in this area,where the loess is treated with compaction pile method.The expressive foundation after form of soil wet-collapse of the foundation treated with compaction pile method is found by the investigation and,thereby,a foundation treatment method with waterproof geo-textile layered laying is proposed for the high-fill wet-collapsible loess.
作者
朱彦鹏
李亚胜
李京榜
张艺鑫
ZHU Yan-peng;LI Ya-sheng;LI Jing-bang;ZHANG Yi-xin(Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou Univ.of Tech.,Lanzhou 730050,China;Western Engineering Research Center of Disaster Prevention and Mitigation in Civil Engineering,the Ministry of Education,Lanzhou Univ.of Tech.,Lanzhou 730050,China)
出处
《兰州理工大学学报》
CAS
北大核心
2019年第6期133-137,共5页
Journal of Lanzhou University of Technology
基金
教育部长江学者和创新团队发展计划项目(IRT17R51).
关键词
挤密桩法
自重湿陷性黄土
桩间距
浸水试验
沉降变形
compaction pile method
self-weight wet-collapsed loess
pile spacing
water soaking test
settlement deformation
