锚杆砂浆粘结-滑移关系的试验拟合分析与模拟  

Experimental data analysis and modeling study of bond-slip relationship between the bolt and cement-mortar

作　　者：刘波[1,2] 李东阳[1] 

机构地区：[1]中国矿业大学力学与建筑工程学院,北京100083 [2]中国矿业大学深部岩土力学与地下工程国家重点实验室,北京100083

出　　处：《合肥工业大学学报（自然科学版）》2009年第10期1510-1513,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(50674095);教育部科学技术研究重点资助项目(109034);教育部新世纪优秀人才支持计划资助项目和北京市优秀人才资助项目(20071D1600700414)

摘　　要：文章按照界面弹簧理论所建立的双曲线模型,对试验实测数据进行了拟合分析,并采用有限元法对锚杆上拔试验进行了模拟,对比计算结果和实测结果得出的主要结论为:采用双曲线模型拟合锚固轴力随深度变化的曲线,可以取得良好的拟合效果;在逐级加载的条件下,界面的剪切刚度呈软化的趋势;在锚固界面没有发生较大滑移的情况下,计算位移和实测位移比较接近。This paper makes the fitting analysis of the field test data according to the hyperbohc model established by the interface spring theory, and simulates the experiment of bolt upraising by means of the finite element method. After the comparison of the calculated results with the field test results, the paper draws the main conclusion that good fitting effect can be obtained when the hyperbolic model is adopted in fitting the relationship between axial force and depth. The interfacial shearing stiffness will soften with the increase of the load level. The error between the calculated displacement and the measured value is very small when there is no large slide occurring on the interface.

关 键 词：锚杆 水泥砂浆 粘结-滑移 剪切刚度 双曲模型 

分 类 号：TU471.6[建筑科学—结构工程]