Theoretical Analysis and Testing of Compaction Pile Composite Foundation in Collapsible Loess

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Theoretical Analysis and Testing of Compaction Pile Composite Foundation in Collapsible Loess
	He Yongqiang 1,2; Zhu Yanpeng 1; Qiao Bin 2
	2011
关键词	Composite pile composite foundation collapsible loess cavity expansion method in situ tests foundation treatment
页码	669-675
英文摘要	Quicklime compaction piles is one of the conventional methods for foundation treatment in collapsible loess, but the research results such as soil stress change around pile, void-ratio and compaction results of soil between piles are seldom be seen, especially, there are very few researchs about soil compaction effect between quicklime piles, which the quicklime expands when absorbing water from the soil. Firstly, the stress field and displacement field of soil around compaction piles are elastic-plastic analyzed on the basis of the cavity expansion theory; Secondly, the computational formula for the amount of expanding material of quicklime pile was deduced on the basis of the character of quicklime compaction piles; Lastly, a series of field and laboratory tests were performed to evaluate the treatment effect of the compaction pile composite foundation. The result shows that the collapsibility has been eliminated, all physical mechanics indexes have been improved, and soil compressibility and modulus of compressibility are also increased remarkably. It embodies the correctness of the computation theory. And the feasibility of the quicklime piles composite foundation on collapsible loess area is further proved.
会议录	2011 INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SYSTEMS SCIENCE AND ENGINEERING (ICESSE 2011), VOL 2
会议录出版者	INFORMATION ENGINEERING RESEARCH INST, USA
会议录出版地	100 CONTINENTAL DR, NEWARK, DE 19713 USA
语种	中文
WOS研究方向	Engineering ; Geology
WOS记录号	WOS:000392898600105
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/37555]
专题	土木工程学院
通讯作者	He Yongqiang
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou, Peoples R China 2.Northwest Univ Nationalities, Sch Civil Engn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	He Yongqiang,Zhu Yanpeng,Qiao Bin. Theoretical Analysis and Testing of Compaction Pile Composite Foundation in Collapsible Loess[C]. 见:.