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张选利1，2， 王永岩1
（1.青岛科技大学 机电工程学院， 山东 青岛 266061； 2.辽宁工程技术大学 力学与工程科学系， 辽宁 阜新 123000）
摘要： 针对柔性注压锚杆解析及实验比较困难，采用有限元方法，模拟研究不同锚杆锚固段长下的锚固特性。数值模拟显示：锚固段沿轴向锚头端处位移变化大，有应力集中；锚固段长度大于100 mm的较长锚固段,轴向阻抗摩擦应力曲线分为应力波浪段，应力平台段和应力速降段；锚固段长度小于60 mm的较短锚固段,轴向阻抗摩擦应力曲线只有波浪段和速降段，没有平台段。
关键词： 柔性注压锚杆； 锚固段长； 有限元分析； 阻抗摩擦应力
中图分类号： TD 353+.6 文献标志码： A
Anchor Behavior of Flexible Pressurized Grouting Bolt with Different Anchorage Length
ZHANG Xuan-li1,2, WANG Yong-yan1
(1.College of Electromechanical Engeneering, Qingdao University of Science and Technology, Qingdao 266061, China;
2.Department of Mechanics and Engineering Sciences, Liaoning Technical University, Fuxin 123000, China)
Abstract: Because it is difficult to analyze the flexible pressurized grouting bolt with analytical method and test method.The finite element method is adopted to study the anchorage behavior of flexible pressurized grouting bolt with different anchorage length.The simulation results show that the anchor head has a large displacement changes and has the stress concentration,the axial resistance friction stress curve can be divided into wave section、platform section and dump section when the anchorage length is more than 100 mm;the axial resistance friction stress curve only have wave section and dump section,without platform section when the anchorage length is less than 60 mm.
Key words: flexible inner pressure bolt; anchorage length; finite element analysis; resistance drawing stress
收稿日期：2010-04-20
作者简介： 张选利（1965—），男，副教授.
