| 小湾拱坝坝基开挖及加固的三维弹粘塑性有限元分析 |
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| 引用本文： | 徐明毅,陈胜宏,张勇传. 小湾拱坝坝基开挖及加固的三维弹粘塑性有限元分析[J]. 武汉大学学报(工学版), 2004, 37(1): 1-5 |
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| 作者姓名： | 徐明毅 陈胜宏 张勇传 |
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| 作者单位： | 1. 华中科技大学水电及数字化工程学院,湖北,武汉,430074
2. 武汉大学水利水电学院,湖北,武汉,430072 |
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| 基金项目： | 国家电力公司重点科技攻关项目(编号:01 02 05(2)). |
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| 摘 要： | 采用三维弹粘塑性有限元法对小湾拱坝坝基开挖及加固进行了分析,计算了初始地应力和渗流场的作用,模拟了分步开挖的过程,考虑了锚杆和锚索的加固效应,评价了爆破松弛对边坡稳定的影响.计算结果表明,边坡整体是稳定的,开挖设计合理,锚固措施得当.由于安全系数并不高,故提出了相应的建议,以进一步提高开挖边坡的稳定性.
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| 关 键 词： | 小湾拱坝 坝基开挖 有限元法 |
| 文章编号： | 1671-8844(2004)01-001-05 |
| 修稿时间： | 2003-04-15 |
Xiaowan arch dam foundation excavation and reinforcement analysis with 3D elasto-viscoplastic FEM |
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| XU Ming-yi. Xiaowan arch dam foundation excavation and reinforcement analysis with 3D elasto-viscoplastic FEM[J]. Engineering Journal of Wuhan University, 2004, 37(1): 1-5 |
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| Authors: | XU Ming-yi |
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| Affiliation: | XU Ming-yi~ |
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| Abstract: | The 3D elasto-viscoplastic FEM is applied to analyze the Xiaowan arch dam foundation excavation and its reinforcement. The influences of the underground initial stress field and the seepage field are calculated. The process of step-excavation is simulated. The reinforcement effect of bolts and cables is considered. And the effect of exploding relaxation on slope stability is also evaluated. The calculation results indicate that the whole slope is stable and the layouts of excavation and reinforcement are suitable. Because the safety coefficient is not great, the corresponding advices are presented to increase the stability of the excavation slope. |
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| Keywords: | Xiaowan arch dam foundation excavation finite element method |
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