Anchor deformation of flexible supporting system with prestressed anchors

doi:10.3969/j.issn.1001-4632.2015.03.10

IR > 土木工程学院

	Anchor deformation of flexible supporting system with prestressed anchors
	Zhou, Yong1,2 ; Zhu, Yanpeng1,2 ; Ren, Yongzhong 1,2
	2015-05-01
发表期刊	Zhongguo Tiedao Kexue/China Railway Science
ISSN	10014632
卷号	36 期号:3 页码:58-65
摘要	The total deformation of anchor mainly consists of four parts: the elastic deformation of the free segment of anchor, the elastic deformation of anchorage body, the tangential displacement between anchorage body and soil mass as well as the tangential displacement between anchor bar and anchorage body. The formula for calculating anchor deformation is derived by introducing the concept of residual coefficient of anchor prestress loss. The method for determining anchor prestress is further proposed according to the principle of deformation compatibility between the horizontal displacement of foundation pit or slope and anchor deformation. The analysis of engineering example indicates that in the anchor deformation, the elastic deformation of the free segment of anchor is the largest. The anchor prestress values become larger from the top down gradually, and if the allowable deformation is smaller, then the required anchor prestress is larger. The anchor deformation decreases with the increase of anchor prestress, the anchorage segment length of anchor and the interface friction resistance of soil mass, and increases with the increase of the free segment length of anchor, but is not affected by the diameter of anchorage body. It is recommended that, the anchor deformation should be controlled by adjusting anchor prestress according to different soil status in practical engineering. Both the length of free segment and anchorage segment of anchor should be reasonably determined by comprehensively considering the requirements for bearing capacity, stability and deformation control. The diameter of anchorage body is in the range from 130 mm to 150 mm. ©, 2015, Chinese Academy of Railway Sciences. All right reserved.
关键词	Anchorages (foundations) Elastic deformation Prestressing Soils Anchor supporting Deformation compatibility Deformation control Horizontal displacements Practical engineering Pre-stressed anchor Supporting systems Tangential displacements
DOI	10.3969/j.issn.1001-4632.2015.03.10
收录类别	EI
语种	中文
出版者	Chinese Academy of Railway Sciences
EI入藏号	20152801031608
EI主题词	Anchorages (concrete construction)
EI分类号	412 Concrete - 483.1 Soils and Soil Mechanics - 483.2 Foundations
来源库	Compendex
分类代码	412 Concrete - 483.1 Soils and Soil Mechanics - 483.2 Foundations
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/112343
专题	土木工程学院
作者单位	1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China; 2.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China
第一作者单位	甘肃省土木工程防灾减灾重点实验室; 土木工程学院
第一作者的第一单位	甘肃省土木工程防灾减灾重点实验室
推荐引用方式 GB/T 7714	Zhou, Yong,Zhu, Yanpeng,Ren, Yongzhong. Anchor deformation of flexible supporting system with prestressed anchors[J]. Zhongguo Tiedao Kexue/China Railway Science,2015,36(3):58-65.
APA	Zhou, Yong,Zhu, Yanpeng,&Ren, Yongzhong.(2015).Anchor deformation of flexible supporting system with prestressed anchors.Zhongguo Tiedao Kexue/China Railway Science,36(3),58-65.
MLA	Zhou, Yong,et al."Anchor deformation of flexible supporting system with prestressed anchors".Zhongguo Tiedao Kexue/China Railway Science 36.3(2015):58-65.