Anchoring characteristic of tension-type anchor cable and grout length design

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 会议论文

	Anchoring characteristic of tension-type anchor cable and grout length design
	Liu, Xiumin; Zhou, Yichao; Chen, Congxin; Zheng, Yun; Xia, Kaizhong
	2013
会议日期	JUN 18-20, 2013
会议地点	Tongji Univ, Shanghai, PEOPLES R CHINA
页码	697-702
英文摘要	Currently the design of tension-type anchor cable based on the assumption that anchoring force uniformly distributed in the anchorage segment, but field test show it unevenly in fact. This study established an elastic mechanical model for the tension-type anchor in rock mass and gained anchoring force distribution expression. The exponential expression shows that anchoring force concentrates in part length of the anchorage segment, and the maximum of it is proportional to the freedom segment length and pre-stressing force, inversely proportional to surrounding rock's stiffness and anchor hole's radius. Then, according to the anchoring force distribution law, the anchorage segment was divided into effective anchorage segment and synergistic anchorage segment two parts. A calculation formula for the effective anchorage length was proposed correspondingly. It was found that this length mainly determined by the rigidity of surrounding rock and buried depth of anchorage segment. Designed grout length must be longer than it. Finally, by referenced to a number of engineering examples, a rational range of grout length for tension-type anchor cable was suggested in soft rock and hard rock respectively.
源文献作者	Feng, XT ; Hudson, JA ; Tan, F
会议录	ROCK CHARACTERISATION, MODELLING AND ENGINEERING DESIGN METHODS
会议录出版者	CRC PRESS-TAYLOR & FRANCIS GROUP
会议录出版地	BOCA RATON
语种	英语
WOS研究方向	Engineering
WOS记录号	WOS:000342685900120
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4767]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Liu, Xiumin,Zhou, Yichao,Chen, Congxin,et al. Anchoring characteristic of tension-type anchor cable and grout length design[C]. 见:. Tongji Univ, Shanghai, PEOPLES R CHINA. JUN 18-20, 2013.