| 泥石流淤埋桥梁后的毁损机制分析 |
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| 引用本文： | 钟盈,陈洪凯.泥石流淤埋桥梁后的毁损机制分析[J].重庆交通大学学报(自然科学版),2010,29(5). |
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| 作者姓名： | 钟盈 陈洪凯 |
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| 作者单位： | 重庆交通大学,岩土工程研究所,重庆,400074;重庆交通大学,岩土工程研究所,重庆,400074 |
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| 基金项目： | 中国博士后科学基金特别资助项目 |
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| 摘 要： | 穿越泥石流沟的公路桥梁、路基路面及相应防护结构极易被泥石流冲击及淤埋毁损。基于泥石流两相流模型,以被泥石流淤埋的桥梁为研究对象,分析了新近泥石流沉积物流变固结的机理,并且推导了泥石流沉积物流变固结的力学公式,最后结合数值模拟软件进行现场实例分析,进一步验证了泥石流淤埋毁损桥梁的力学机制,为公路工程人员防治泥石流灾害提供了重要依据。
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| 关 键 词： | 泥石流沉积物 流变固结 力学机理 淤埋毁损 |
Destroyed Mechanism Analysis of Bridge Buried by Debris Flow |
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| ZHONG Ying,CHEN Hong-kai.Destroyed Mechanism Analysis of Bridge Buried by Debris Flow[J].Journal of Chongqing Jiaotong University,2010,29(5). |
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| Authors: | ZHONG Ying CHEN Hong-kai |
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| Institution: | ZHONG Ying,CHEN Hong-kai(Research Institute of Geotechnical Engineering,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | Highway bridges,pavements and corresponding protective structures,which are crossing debris flow ditches,are very easy to be buried and destroyed by debris flow.Taking the bridge buried by debris flow as the research object,the mechanism of debris flow's rheological consolidation which deposits recently is analyzed on the basis of debris flow two-phase flow model.And then the mechanical formula of debris flow rheological consolidation is deduced;finally,numerical simulation software is used to make an on-si... |
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| Keywords: | debris flow deposit rheological consolidation mechanical mechanism burying and destroying |
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