红砂岩边坡中全长黏结型锚杆受力机理分析  

Stress mechanism analysis of full-length bonded anchor in red sandstone slope

作　　者：张强[1,2] 张可能[1,2] Zhang Qiang;Zhang Keneng(Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University),Ministry of Education,Changsha Hunan 410083,China;School of Geosciences and Info-Physics,Central South University,Changsha Hunan 410083,China)

机构地区：[1]有色金属成矿预测与地质环境监测教育部重点实验室(中南大学),湖南长沙410083 [2]中南大学地球科学与信息物理学院,湖南长沙410083

出　　处：《山西建筑》2023年第21期72-75,共4页Shanxi Architecture

基　　金：国家自然科学基金面上项目:干湿-化学耦合作用下混合土封场覆盖系统致裂机理及气-液运移规律(项目编号:41972282);中南大学研究生自主探索创新项目:基于监测数据时空变化规律的边坡稳定性动态评价(项目编号:1053320212062)。

摘　　要：对于全长黏结型锚杆的受力机理,大多数研究是在拉拔试验下分析锚杆的受力情况,这与实际工况中锚杆的受力情况存在差异,而对于采用全长黏结型锚杆进行支护的岩质边坡,锚杆从施加到实际起作用的过程中,其受力是一直变化的,其随时间变化的规律同样值得研究。利用模拟软件对红砂岩边坡内的锚杆受力进行分析,同时基于Mindlin位移解,考虑岩石的流变性质,选择合适的蠕变模型,推导出包含时间因素的全长黏结型锚杆剪应力、轴力表达式。Most studies on the force mechanism of full-length bonded anchor rods have analyzed the force of anchor rods under pull-out tests,which differs from the force of anchor rods in actual working conditions.For rocky slopes supported by full-length bonded anchor rods,the force of anchor rods changes all the time from the time of application to the time of actual acting,and the law of its change with time is also worth studying.In this paper,we use simulation software to analyze the anchor force in the red sandstone slope,and also select a suitable creep model based on Mindlin displacement solution,considering the rheological properties of the rock,and derive the expressions of shear stress and axial force for full-length bonded anchor including time factor.

关 键 词：全长黏结锚杆 受力分析 数值模拟 监测 

分 类 号：TU457[建筑科学—岩土工程]