压力型锚索锚固工程原型监测与分析  

Prototype monitoring and analysis of anchoring construction by pressure-dispersive cable

作　　者：雷金山[1] 杨秀竹[1] 王安正[1] 刘长文[1] 茹卫[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《铁道科学与工程学报》2011年第6期64-69,共6页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51108462);湖南省科技厅工业支撑计划项目(1GK20113127)

摘　　要：结合实际工程,开展压力分散型预应力锚索的原型长期测试研究,测试结果表明:压力分散型锚索预应力变化自张拉锁定开始,均经历快速下降、波动变化和平缓变化3个过程;边坡地表竖向位移和水平位移前期发展较快,后期变形渐趋稳定;坡体深部未出现大变形的潜在破裂面,说明边坡处于稳定状态,即在破碎软弱岩体中采用分散压力型预应力锚固工程是可行的。可为今后类似锚固工程提供参考。Based on engineering practice,monitoring of pressure-dispersive prestressed cable was carried on for a long time.The result of monitoring showed that change of prestressing force after the tension primarily locked included three processes,which successively were rapid dropping,fluctuant change and gentle change.Vertical and horizontal displacement of slope surface developed rapidly in the earlier stage,and later deformation gradually stabilized.Deep slope body had no large deformation of potential fracture surface,which showed that the slope was in a stable state.Soft fractured rock anchored by pressure-dispersive prestressed cable is feasible.It is useful for the similar anchor projects in the future.

关 键 词：压力分散型预应力锚索 预应力 位移 变形 

分 类 号：TU457[建筑科学—岩土工程]