自承载式预应力锚索现场试验研究  

Field Test of Self-bearing Pre-stressed Anchor Cable

作　　者：王全成[1,2] 姜昭群[1,2] 罗宏保[1,2] 张勇[1,2] 杨栋[1,2] WANG Quan-cheng;JIANG Zhao-qun;LUO Hong-bao;ZHANG Yong;YANG Dong(Institute of Exploration Technology,CAGS,Chengdu Sichuan 611734,China;Technical Center for Geological Hazard Prevention and Control,CGS,Chengdu Sichuan 611734,China)

机构地区：[1]中国地质科学院探矿工艺研究所,四川成都611734 [2]中国地质调查局地质灾害防治技术中心,四川成都611734

出　　处：《探矿工程（岩土钻掘工程）》2018年第8期79-82,87,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：中国地质调查局地质调查项目"大巴山区城镇地质灾害调查"(编号:121201019000150003);国土资源公益性行业专项"地质灾害防治工程缺陷修复加固技术装备研发"(编号:201511051)

摘　　要：自承载式预应力锚索是一种不需要注浆即可进行张拉锁定的拉压复合型预应力锚索,适合于滑坡灾害应急抢险的快速锚固工程施工。本文结合现场试验数据,分析了自承载式预应力锚索的张拉力、锚索应力分布规律,并与普通拉力集中型锚索进行对比,阐明自承载式预应力锚索不仅有不注浆即可张拉发挥快速锚固作用的特点,同时自承载式预应力锚索锚固段的应力分布均匀,能充分发挥锚固段全长的锚固作用。Self-bearing pre-stressed anchor cable is a kind of tension and pressure compound pre-stressed anchor cable, which can be locked by tensioning without grouting, and is suitable for the rapid anchoring engineering construction of the landslide disaster emergency rescue. Combined with field test data, this paper analyzes the integral tension and anchor cable stress distribution laws of the self-bearing pre-stressed anchor cable and compares this cable with common tensile anchor cable, it is shown that the self-bearing pre-stressed anchor cable not only has the characteristics of rapid anchoring without grouting, but also has uniform stress distribution in anchorage section to fully play the anchoring function in the whole anchoring section, which reflects the advantages of this new type of prestressed anchor cable.

关 键 词：自承载式 预应力锚索 应力分布 快速锚固 应急抢险 

分 类 号：U416[交通运输工程—道路与铁道工程]