| 基于FLAC3D的加筋土填方边坡稳定性分析 |
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| 引用本文： | 段晓伟,耿少波.基于FLAC3D的加筋土填方边坡稳定性分析[J].唐山学院学报,2016,29(3):75-79. |
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| 作者姓名： | 段晓伟 耿少波 |
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| 作者单位： | 长安大学 建筑工程学院, 西安 710064,中北大学 土木工程系, 太原 030051 |
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| 基金项目： | 国家自然科学基金资助项目(51408558) |
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| 摘 要： | 以陕西某山区高填方工程为背景,运用强度折减法和关联流动法则,对该场地某超高加筋土边坡夯后的水平位移、竖直位移、最大主应力、最小主应力等力学行为进行数值分析,研究了土工格栅对加筋高填方边坡稳定性的影响,并对土工格栅垂直间距参数设计进行比选和优化。结果表明:无筋边坡的潜在滑移面比加筋边坡更靠近坡面,加筋不仅能提高边坡安全系数,而且能降低边坡的最大剪应变与最大位移;筋材铺设存在最佳间距区域,合理的铺设间距能够有效提高加筋高边坡的稳定性。
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| 关 键 词： | 加筋土 高填方地基 边坡稳定性 安全系数 |
An FLAC3D-Based Analysis of the Stability of Reinforced-Earth-Filled Slopes |
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| DUAN Xiao-wei and GENG Shao-bo.An FLAC3D-Based Analysis of the Stability of Reinforced-Earth-Filled Slopes[J].Journal of Tangshan College,2016,29(3):75-79. |
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| Authors: | DUAN Xiao-wei and GENG Shao-bo |
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| Institution: | School of Architecture Engineering, Chang''an University, Xi''an 710064, China and Department of Civil Engineering, North University of China, Taiyuan 030051, China |
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| Abstract: | With the high filling project of a certain mountainous area in Shaanxi Province as the research subject, the authors of this paper have conducted a numerical analysis of the horizontal displacement, vertical displacement and maximum principal of the highly-reinforced-earth-filled slopes with the strength reduction method and the associated flow rules, studied the influence of geogrids on the stability of slopes filled with reinforced earth, and compared and optimized the designs of vertical spacing parameters of geogrids. The results show that the potential slip surface of non-reinforced slope is closer to the slope surface, that reinforcement can not only increase the slope safety, but also reduce the maximum shear strain and maximum displacement of slopes, that there exists an optimal spacing region for laying reinforcing material, and that the reasonable laying spacing can effectively improve the stability of reinforced slopes. |
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| Keywords: | reinforced earth high-filling base slope stability coefficient of safety |
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