| 边坡预应力锚杆蠕变的数值分析 |
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| 引用本文： | 李京剑,郑百林,徐春雨.边坡预应力锚杆蠕变的数值分析[J].上海力学,2007,28(1):124-128. |
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| 作者姓名： | 李京剑 郑百林 徐春雨 |
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| 作者单位： | 同济大学航空航天与力学学院 上海200092 |
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| 摘 要： | 运用非线性蠕变分析理论模型,采用MSC.MARC软件重点研究了锚杆的应力指数、蠕变系数和几何参数的变化对于锚杆应力松弛的影响.通过对预应力锚杆支护的边坡进行数值分析,探讨了锚杆的蠕变规律以及锚杆预应力松弛现象.锚杆的参数取不同数值时,比较数值模拟结果发现:锚杆的轴力和剪力主要分布在锚固段的前端;随着锚杆应力指数及蠕变系数的增加,蠕变应变增大,应力松弛加快.
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| 关 键 词： | 数值模拟 蠕变 应力松弛 锚固 |
| 文章编号： | 0254-0053（2007）01-124-5 |
| 收稿时间： | 2006-11-20 |
| 修稿时间： | 2006-11-20 |
Numerical Analyses of Creep Behavior for Prestressed Anchor Rods |
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| LI Jing-jian,ZHENG Bai-ling,XU Chun-yu.Numerical Analyses of Creep Behavior for Prestressed Anchor Rods[J].Chinese Quarterly Mechanics,2007,28(1):124-128. |
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| Authors: | LI Jing-jian ZHENG Bai-ling XU Chun-yu |
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| Institution: | School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China |
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| Abstract: | The non-linear creep model will be used to study the influence of stress exponent,creep coefficient and geometry parameter on the stress relaxation of the anchor rods.By the numerical analyses that prestressed anchor rods reinforce the slope,the rule of creep behavior and the stress relaxation of anchor rods will be discussed.Comparing the results of numerical analyses under the different value of parameters,it will be found that the axial force and shearing force mainly distribute on the front of the anchor rod and with the increase of stress exponent and creep coefficient,the creep strain will be enlarged and the stress relaxation will be accelerated. |
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| Keywords: | numerical simulation creep stress relaxation anchor |
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