摘要
结合实际工程的地质条件和囊式锚杆抗拔力理论公式进行计算,再通过现场足尺试验分析绘制其荷载-位移曲线,同时采用有限元软件仿真模拟。对比这三个方面的数据得出规范公式偏安全,有限元软件在三维模型下能准确模拟实际工作情况。综合分析得出囊式抗浮锚杆在中风化岩中更能充分发挥其力学性能;囊式锚杆杆体在承受荷载时上部非扩体锚固段先提供抗拔力,当荷载值比较大时主要由囊袋结石体和锚杆与岩体之间的相互作用提供抗拔力。
The calculation is based on the actual engineering geological conditions and the theoretical formula of the pull-out force of the capsule anchor,and then the load-displacement curve is drawn through field test analysis.Simultaneously,the finite element software is used for simulation.Comparing the data from these three aspects,it is concluded that the standard formula is safe,and the finite element software can accurately simulate the actual working situation under the three-dimensional model.Comprehensive analysis shows that the capsule anti-floating anchor can fully exert its mechanical properties in moderately weathered rocks;the capsule non-expanded anchorage section first provides the pull-out force when the load is carried,and when the load value is relatively large,the pull-out force is mainly provided by the interaction between the bag stone body and the anchor and the rock body.
作者
裴宝家
李大华
孟源
罗睿
潘锐
Pei Baojia;Li Dahua;Meng Yuan;Luo Rui;Pan Rui(School of Civil Engineering,Anhui Jianzhu University,Hefei,Anhui 23060,China;No.1 Branch of China Railway Fourth Bureau Group Co.,Ltd.,Hefei,Anhui 230000,China)
出处
《黑龙江工业学院学报（综合版）》
2020年第2期29-34,共6页
Journal of Heilongjiang University of Technology(Comprehensive Edition)
基金
国家自然基金青年科学基金项目“基于软弱破碎围岩锚注力学特性的深部巷道控制机理研究”(编号:51904006)。
关键词
囊式锚杆
岩层基础
数值分析
理论计算
抗浮设计
capsule anchor
rock foundation
numerical analysis
theoretical calculation
anti-floating design
