泥石流淤埋桥梁后的毁损机制分析

重庆交通大学学报（自然科学版） ›› 2010, Vol. 29 ›› Issue (5): 667-669.

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泥石流淤埋桥梁后的毁损机制分析

钟盈, 陈洪凯

重庆交通大学岩土工程研究所, 重庆 400074

收稿日期:2010-04-06 修回日期:2010-06-02 出版日期:2010-10-15 发布日期:2015-01-22
作者简介:钟盈(1985—),女,湖北孝感人,硕士研究生,主要从事公路泥石流灾害研究。E-mail:608457@163.com。
基金资助:
中国博士后科学基金特别资助项目( 20090228, 20080430095 )

Destroyed Mechanism Analysis of Bridge Buried by Debris Flow

ZHONG Ying, CHEN Hong-kai

Research Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, China

Received:2010-04-06 Revised:2010-06-02 Online:2010-10-15 Published:2015-01-22

摘要/Abstract

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。

关键词: 泥石流沉积物, 流变固结, 力学机理, 淤埋毁损

Abstract: Highway bridges, pavements and corresponding protective structures, which are crossing debris flow ditches, are very easy to be buried and destroyed by debr is 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 debr is flow rheological consolidation is deduced; finally, numerical simulation software is used to make an on-site case analysis, which further validates the mechanical mechanism that debris flow buries and destroys bridges. The results provide important references for engineers to control debris flow hazards

Key words: debris flow deposit, rheological consolidation, mechanical mechanism, burying and destroying

中图分类号:

P642.23

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): 667-669.

ZHONG Ying, CHEN Hong-kai. Destroyed Mechanism Analysis of Bridge Buried by Debris Flow[J]. Journal of Chongqing Jiaotong University(Natural Science), 2010, 29(5): 667-669.

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泥石流淤埋桥梁后的毁损机制分析

Destroyed Mechanism Analysis of Bridge Buried by Debris Flow

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