| 三维渔网法全局搜索复杂土坡关键滑动面 |
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| 引用本文： | 朱益军,蔡竹聪,项颖,周坚.三维渔网法全局搜索复杂土坡关键滑动面[J].科技通报,2012,28(9):118-122. |
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| 作者姓名： | 朱益军 蔡竹聪 项颖 周坚 |
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| 作者单位： | 1. 浙江省交通规划设计研究院,杭州,310006
2. 丽水市高速公路工程建设指挥部,丽水,323000 |
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| 基金项目： | 浙江省科技计划资助项目，浙江省交通厅科技计划项目 |
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| 摘 要： | 提出了一种基于坡面网格全局搜索复杂土坡关键滑动面的综合优化方法。它充分利用几何优化和数值分析之优点,根据土坡滑动面后缘和剪出口潜在分布范围,布置两组任意划分的坡面特征点,建立以安全系数极小值为计算目标的三维渔网,渔网任意结点的平面坐标代表一簇滑动面的后缘和剪出口之坡面相应位置特征点编号,而该簇滑动面的安全系数极小值即为渔网结点的空间第三轴坐标,三维渔网的凹部即为复杂土坡局部优化滑动面所在,而且,可在坡面指定搜索区域内同时锁定多个收敛域的目标极小值,进而确定复杂土坡全局关键滑动面。原理简单,若辅以一定的经验分析,能高效地锁定复杂土坡全局关键滑动面。实例计算表明,该方法计算搜索结果具有较好的稳定性和完备性,且适用于复杂的工程土坡。
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| 关 键 词： | 复杂土坡 关键滑动面 渔网法 安全系数 全局搜索 |
Finding Globally Critical Surface by 3D-fish-net Optimization Method Based Complex Soil-slope Surface Ggrids |
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| ZHU Yijun
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CAI Zhucong
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XIANG Yin
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ZHOU Jian.Finding Globally Critical Surface by 3D-fish-net Optimization Method Based Complex Soil-slope Surface Ggrids[J].Bulletin of Science and Technology,2012,28(9):118-122. |
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| Authors: | ZHU Yijun CAI Zhucong XIANG Yin ZHOU Jian |
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| Institution: | 1(1.Zhejiang Provincial Institution of Communication Plan,Design and Research,Hangzhou 310006,China;2.Lishui Expressway Project Construction Management Office,Lishui,323000,China) |
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| Abstract: | Based on typical soil slope face grids,one new method is put forward to search globally critical slip faces on complicated slope.It preferably utilizes both optimization advantage of geometrical and numerical model.Furthermore,its theory is easily intelligible.If assisted by experience analysis on some degree,it will more efficiently get the critical slip surfaces on soil slope.One example is given,it is of good convergence and integrity and applicable to complex soil slopes. |
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| Keywords: | complex soil-slope critical surface fish-net method safety coefficient globally search |
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