| 滚石坡面法向冲击动力响应特性研究 |
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| 引用本文： | 何思明,沈均,罗渝,吴永.滚石坡面法向冲击动力响应特性研究[J].工程力学,2011(6):118-124. |
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| 作者姓名： | 何思明 沈均 罗渝 吴永 |
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| 作者单位： | 中国科学院山地灾害与地表过程重点实验室;中国科学院水利部成都山地灾害与环境研究所;中国中铁二院工程集团有限责任公司; |
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| 基金项目： | 国家自然科学基金项目(40872181); 国家重点基础研究发展计划项目(2008CB425802) |
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| 摘 要： | 滚石灾害是5·12地震诱发的主要次生山地灾害之一,因具有随机和不可预见性,成为灾后重建中地质灾害防治的难点.滚石防治的核心问题是解析滚石对坡面的冲击响应,由于冲击过程历时短、变形大和能量转换复杂,通过传统理论分析方法分析较为困难.为此,以Hertz理论为基础,考虑坡体的弹塑性特性,模型化滚石冲击为自由落体冲击的半无限体...
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| 关 键 词： | 滚石 法向冲击 弹塑性 回弹 动力响应 数值模拟 |
STUDY ON THE CHARACTERISTICS OF NORMAL IMPACT OF POST-EARTHQUAKE ROCK-FALL ON SLOPE |
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| HE Si-ming,SHEN Jun,LUO Yu,WU Yong.STUDY ON THE CHARACTERISTICS OF NORMAL IMPACT OF POST-EARTHQUAKE ROCK-FALL ON SLOPE[J].Engineering Mechanics,2011(6):118-124. |
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| Authors: | HE Si-ming SHEN Jun LUO Yu WU Yong |
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| Affiliation: | HE Si-ming1,2,SHEN Jun3,LUO Yu1,WU Yong1,2(1.Key laboratory of Mountain Hazards and Surface Process,Chinese Academy of Sciences,Chengdu,Sichuan 610041,China,2.Institute of Mountain Hazards and Environment,3.China Railway Eryuan Engineering Group Corporation Limited,Sichuan 610031,China) |
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| Abstract: | As one of the most serious secondary mountain hazards of Wenchuan 8.0 Earthquake,the rock-fall is very hard to treat for its randomness and unpredictability.Based on the HERTZ theory,the characteristics of normal impact of rock-fall is studied by utilizing the finite element analysis software,ABAQUS.The analysis considers the elastic-plastic properties of slope materials and simplifies the impact as a mechanical problem of a sphere into a half-space loaded normally.Then the effect of impact velocity and rad... |
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| Keywords: | rock-fall normal impact elastic-plastic restitution dynamic response numerical simulation |
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