| 卸荷条件下锚杆对节理岩体力学参数的影响 |
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| 引用本文： | 王兴霞,李建林.卸荷条件下锚杆对节理岩体力学参数的影响[J].岩土力学,2006,27(Z2):34-38. |
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| 作者姓名： | 王兴霞 李建林 |
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| 作者单位： | 1. 武汉大学 水利水电学院，武汉 430072；2. 三峡大学 土木水电学院，宜昌 443002 |
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| 基金项目： | 教育部重点项目(No.02099)。 |
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| 摘 要： | 岩体在加载和卸荷条件下，其力学性质有本质的区别。采用数值模拟方法，以ADINA软件为计算平台，研究了卸荷条件下,锚固密度、锚杆长度和岩体性质3个因素对节理岩体力学参数的影响。采用等效变形参数的方法计算节理岩体和锚固体的等效变形模量和泊松比。在分析数值计算结果的基础上，分析了加锚后等效变形模量En与锚固密度N和锚杆长度L之间的关系。
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| 关 键 词： | 卸荷 锚杆 节理岩体 等效变形参数 |
| 收稿时间： | 2006-07-19 |
Influence of Anchor Bolts on Mechanical Parameters under Unloading Conditions |
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| WANG Xing-xia,LI Jian-lin.Influence of Anchor Bolts on Mechanical Parameters under Unloading Conditions[J].Rock and Soil Mechanics,2006,27(Z2):34-38. |
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| Authors: | WANG Xing-xia LI Jian-lin |
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| Institution: | 1. School of Water Resource and Hydropower, Wuhan University, Wuhan 430072, China;
2. College of Civil & Hydropower Engineering, Three Gorges Univ., Yichang 443002, China |
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| Abstract: | The mechanical properties of a jointed rockmass under loading conditions are essentially different from those under unloading conditions. The paper makes studies on how bolt consistency, bolt length and rock characteristics to affect the mechanical parameters of a bolt-supported rockmass under unloading conditions. Numerical simulation method and ADINA software are employed. In addition, equivalent deformation parameter method is used to calculate the equivalent deformation modulus and Poisson’s ratio of a jointed rockmass and bolt-supported rockmass. Based on that, the paper analyzes the relation between the equivalent deformation modulus En of bolt-supported rock mass and bolt consistency N, and the relation between En and bolt length L. |
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| Keywords: | unloading bolt jointed rockmass equivalent deformation parameter |
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