| 地震作用下碎石土滑坡抗滑桩的变形破坏机理 |
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| 引用本文： | 孙峰,孔纪名,贾超,徐星明.地震作用下碎石土滑坡抗滑桩的变形破坏机理[J].长江科学院院报,2017,34(7). |
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| 作者姓名： | 孙峰 孔纪名 贾超 徐星明 |
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| 作者单位： | 1. 沈阳市勘察测绘研究院,沈阳,110004;2. 中国科学院 山地灾害与地表过程重点实验室,成都 610041;中国科学院 水利部成都山地灾害与环境研究所,成都 610041;3. 铁岭经济开发区建设工程质量监督站,辽宁 铁岭,112000;4. 中国建筑东北设计研究院,沈阳,110006 |
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| 基金项目： | 国家自然科学基金重点项目，云南省交通运输厅科技教育专项资金项目(2010 |
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| 摘 要： | 为了揭示碎石土滑坡在地震荷载作用下的变形破坏模式和作用规律,采用相似材料模型试验方法,进行了以南温碎石土滑坡为原型的物理模型试验。分析了在地震荷载作用下抗滑桩不同的锚固深度下,桩位移和边坡变形情况。利用弹塑性动力固结大变形有限元模型,采用非线性分析方法,进行了一系列对比分析研究。进一步验证了碎石土滑坡的变形破坏机理。分析了不同的锚固深度下,桩顶的动位移和变形响应。通过室内物理模型试验和数值模拟分析,提出南温滑坡抗滑桩的锚固深度设置,宜为桩长的0.29~0.31倍。其设计方法和研究思路,可为相关研究提供参考和借鉴。
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| 关 键 词： | 地震作用 碎石土滑坡 抗滑桩 变形破坏 锚固深度 |
Mechanism of Deformation Failure of Anti-slide Piles in Debris Landslide under Earthquake Action |
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| SUN Feng,KONG Ji-ming,JIA Chao,XU Xing-ming.Mechanism of Deformation Failure of Anti-slide Piles in Debris Landslide under Earthquake Action[J].Journal of Yangtze River Scientific Research Institute,2017,34(7). |
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| Authors: | SUN Feng KONG Ji-ming JIA Chao XU Xing-ming |
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| Abstract: | Physical model test with similar materials for Nanwen debris landslide was conducted to reveal the deformation failure mode of debris landslide under earthquake load.The displacement of anti-slide piles of different depths and the deformations of slope under earthquake load were analyzed.Furthermore, a non-linear finite element model of elastic-plastic dynamic consolidation of large strain was built to verify the deformation failure of debris landslide.The dynamic displacement of pile top and the deformation response of pile of varying depth were analyzed.The embedded depth of anti-slide piles should be 0.29-0.31 times the pile length for Nanwen debris landslide.The model design method and research idea could offer reference for related researches. |
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| Keywords: | earthquake action debris landslide anti-slide piles deformation and failure anchorage depth |
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