锚索预应力损失的影响因素分析及其补偿措施  

Analysis of factors affecting pre-stressing loss in pre-stressing cable anchor and compensative measures

作　　者：韩光[1] 朱训国[2] 王大国[2] 

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]大连大学材料破坏力学数值试验研究中心,辽宁大连116622

出　　处：《辽宁工程技术大学学报（自然科学版）》2008年第2期176-179,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(59979002);香港研究资助局基金资助项目(HKU7171/06E);辽宁省教育厅基金资助项目(2005058);大连市优秀青年科学技术基金资助项目(2007J23JH027);中国博士后基金资助项目(20060400972)

摘　　要：为了研究锚索预应力损失的影响因素以及对其的补偿措施,对多个工程锚索的应力测试结果进行了较详细的分析和研究,得出了影响锚索预应力损失的因素:锚索材料钢绞丝的松弛、锚固对象岩土体的变形以及施工中的张拉、锁定等原因。依据力学性能优选适宜于预应力锚索的新材料,并在上述分析结果的基础上提出了补偿锚索预应力损失的措施,提高了预应力锚索体系的综合锚固效果。对预应力锚索工程具有一定的理论和指导意义。In order to study the factors affecting pre-stressing loss in pre-stressing cable and compensative, measures, the results of stress tests for many cables are analyzed and researched in detail, and the affecting factors are obtained to the anchor cable＇s pre-stress losing which are the twists relaxation of the anchor cable material steel, the deformation of reinforcing mass and stretching and locking and so on. According to the material＇s mechanical properties, the new cable material of pre-stressing anchor is optimally selected. On the basis of analyzed result, the compensative measures are proposed to enhance the pre-stressing anchor cable system＇s comprehensive reinforcement effect. It certainly has theoretical and the guiding significance to the pre-stressed anchoring project.

关 键 词：预应力锚索 预应力损失 影响因素 补偿措施 

分 类 号：TD353[矿业工程—矿井建设]