STUDY OF REINFORCEMENT MECHANISM AND EFFECT OF NEW PRESSURE-FRICTION-TYPE PRESTRESSED ANCHORAGE CABLE
WANG Xiaogang1，2，YANG Xiaodong1，2，JIA Zhixin1，2，LIU Lipeng1，2
(1. Department of Geotechnical Engineering，China Institute of Water Resources and Hydropower Research，Beijing 100048，China； 2. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin，China Institute of Water Resources and Hydropower Research，Beijing 100048，China)
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.
汪小刚1，2，杨晓东1，2，贾志欣1，2，刘立鹏1，2. 新型压缩摩擦组合分散型锚索锚固机制及效应研究[J]. 岩石力学与工程学报, 2013, 32(6): 1094-1100.
WANG Xiaogang1，2，YANG Xiaodong1，2，JIA Zhixin1，2，LIU Lipeng1，2. STUDY OF REINFORCEMENT MECHANISM AND EFFECT OF NEW PRESSURE-FRICTION-TYPE PRESTRESSED ANCHORAGE CABLE. , 2013, 32(6): 1094-1100.
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))
[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))
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2013, Vol. 32 
