新型压缩摩擦组合分散型锚索锚固机制及效应研究

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (657 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract At present，the prestressed anchoring technology is applied extensively to the construction of projects，such as water resources and hydropower engineering，transportation engineering，underground mining engineering，and so on. Due to the limitations of conventional prestressed anchorage cable，such as stress concentration on the head of anchor-root and nonuniformity of shear stress distribution，a new pressure-friction-type prestressed anchorage cable(PFPAC) is proposed. A number of laboratory tension tests and numerical simulations are conducted to understand the reinforcement mechanism and its effect systematically. The results show that the compressive stress concentrated on anchor-root is low；the superposition of axial compressive stress and shear stress in grouting are not obvious；and the stress distribution is uniform. PFPAC can overcome the defects of conventional prestressed anchorage cable effectively. The stress distribution in the anchor-root and the reliability of cable can be significantly improved，and the total tension stress can be effectively provided by the PFPAC if the total tension stress is already determined in the project. The results can provide an alternative in selecting anchorage system in geotechnical engineering.

Key words： geotechnical engineering pressure-friction-type prestressed anchorage cable reinforcement mechanism of anchorage

Received: 11 January 2013

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

https://rockmech.whrsm.ac.cn/EN/Y2013/V32/I6/1094

[1] 朱杰兵，韩军，程良奎，等. 三峡永久船闸预应力锚索加固对周边岩体力学性状影响的研究[J]. 岩石力学与工程学报，2002，21(6)：853–857.(ZHU Jiebing，HAN Jun，CHENG Liangkui，et al. Research on rockmass properties near anchor with prestressing for TGP permanent shiplock[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(6)：853–857.(in Chinese)) [2] 高大水，曾勇. 三峡永久船闸高边坡锚索预应力状态监测分析[J]. 岩石力学与工程学报，2001，20(5)：653–656.(GAO Dashui，ZENG Yong. Monitoring analysis of prestress state of anchor cable of high slope of the TGP permanent shiplocks[J]. Chinese Journal of Rock Mechanics and Engineering，2001，20(5)：653–656.(in Chinese)) [3] 徐湘涛，严丽娟，汪家林. 紫坪铺水利枢纽引水发电洞进水口边坡锚索预应力损失分析[J]. 地质灾害与环境保护，2005，16(2)：207–211.(XU Xiangtao，YAN Lijuan，WANG Jialin. Analysis for loss of prestressing anchors about intake slope located at diversion cave of Zipingpu hydro-junction project[J]. Journal of Geological Hazards and Environment Preservation，2005，16(2)：207–211.(in Chinese)) [4] 张德圣，林舸，龚发雄，等. 小湾电站预应力锚索施工常见问题初步探讨[J]. 施工技术，2006，35(9)：67–70.(ZHANG Desheng，LIN Ge，GONG Faxiong，et al. Primary discussing on familiar questions of prestressed anchor cable construction in Xiaowan hydropower station[J]. Construction Technology，2006，35(9)：67–70.(in Chinese)) [5] 张保军，张漫，靳保章. 隔河岩电站边坡预应力锚索加固监测[J]. 长江科学院院报，2001，18(3)：36–38.(ZHANG Baojun，ZHANG Man，JIN Baozhang. Monitoring on prestressed anchors applied to reinforce Geheyan Power Station′s slope[J]. Journal of Yangtze River Scientific Research Institute，2001，18(3)：36–38.(in Chinese)) [6] 高谦，吴顺川，吴学民. 预应力锚索在平庄西露天矿非工作帮边坡加固工程中的应用[J]. 工程地质学报， 2005，13(2)：257–262. (GAO Qian，WU Shunchuan，WU Xuemin. Application of prestressed cable in supporting for nonworking slope in the west open pit of Pingzhuang coal mine[J]. Journal of Engineering Geology，2005，13(2)：257–262.(in Chinese)) [7] 丁秀丽，盛谦，韩军，等. 预应力锚索锚固机制的数值模拟试验研究[J]. 岩石力学与工程学报，2002，21(7)：980–988.(DING Xiuli， SHENG Qian， HAN Jun， et al. Numerical simulation testing study on reinforcement mechanism of prestressed anchorage cable[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(7)：980–988.(in Chinese)) [8] 李英勇，张顶立，王松根. 预应力锚索锚固作用机制的数值模拟研究[J]. 岩土力学，2006，27(增1)：921–925.(LI Yingyong，ZHANG Dingli，WANG Songgen. Research on numerical simulation of anchoring mechanism of prestressed anchor cables[J]. Rock and Soil Mechanics， 2006，27(Supp.1)：921–925.(in Chinese) ) [9] 战玉宝，毕宣可，尤春安. 预应力锚索锚固段应力分布影响因素分析[J]. 土木工程学报，2007，40(6)：49–53.(ZHAN Yubao，BI Xuanke，YOU Chun?an. Analysis of factors influencing the stress distribution in prestressed cables[J]. China Civil Engineering Journal，2007，40(6)：49–53.(in Chinese)) [10] 李铀，白世伟，朱维申，等. 预应力锚索锚固效应的仿真试验与数值模拟研究[J]. 岩土力学，2004，25(增1)：260–264.(LI You，BAI Shiwei，ZHU Weishen，et al. Simulation test and numerical simulation of anchoring effect of prestresses cable[J]. Rock and Soil Mechanics，2004，25(Supp.1)：260–264.(in Chinese)) [11] 中华人民共和国行业标准编写组. SL 212—2012 水工预应力锚固设计规范[S]. 北京：中国水利水电出版社，2012.(The Professional Standards Compilation Group of People?s Republic of China. SL 212—2012 Design specification for hydraulic prestressed anchorage[S]. Beijing：China Water Power Press，2012.(in Chinese))