| 岩质边坡动态施工过程稳定性评价的强度折减有限元法 |
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| 引用本文： | 江学良,曹 平.岩质边坡动态施工过程稳定性评价的强度折减有限元法[J].岩土力学,2006,27(Z1):691-696. |
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| 作者姓名： | 江学良 曹 平 |
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| 作者单位： | 1.中南大学 资源与安全工程学院，长沙 410083；2.湖南城市学院土木工程学院，益阳 413000 |
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| 摘 要： | 采取该弹塑性有限元程序，在考虑施工爆破、岩体节理影响的条件下，对常－张高速公路的重点边坡的施工过程进行了模拟，分析了开挖过程中，岩体的变形和应力状态及屈服状态，并用降低材料强度储备的有限元强度折减法，根据边坡岩体单元的屈服连通程度和关键部位的位移变化对高边坡的整体安全系数进行了研究。通过对重点边坡K123的分析表明，边坡在其施工过程中是稳定的。
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| 关 键 词： | 岩质边坡 施工过程模拟 弹塑性有限元 稳定性分析 强度折减有限元法 |
| 收稿时间： | 2006-05-25 |
Evaluation of rock slope stability in stage excavation process
by using strength reduction FEM |
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| JIANG Xue-liang,CAO Ping.Evaluation of rock slope stability in stage excavation process
by using strength reduction FEM[J].Rock and Soil Mechanics,2006,27(Z1):691-696. |
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| Authors: | JIANG Xue-liang CAO Ping |
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| Institution: | 1.School of Resources and Safety Engineering, Central South University, Changsha 410083, China)
(2.School of Civil Engineering, Hunan City University, Yiyang 413000, China |
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| Abstract: | The simulation of stage excavation of the high slope of Chang-Zhang Expressway is carried out by using two-dimensional elastoplastic finite element method, considering the influence of blasting and rock joint. The rock mass’s deformation, stresses and yielding state in the excavation process are analyzed respectively.The integral safety of the high slope is discussed by using the method of lowing material’s strength safety factor and in light of the yielding rate of the slope’s rock mass element and variation of displacements of the key parts. Through researching the important slope K123, a conclusion that the slopes are stable in construction process, is drawn. |
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| Keywords: | rock slope simulation of stage excavation elastoplastic finite elements stability analysis strength reduction FEM |
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