摘要
洪水及其引起的河床冲刷一直是影响在役桥梁安全的重要因素,是造成在役桥梁垮塌的主要原因之一。对近十年来国内因洪水而垮塌桥梁事故的案例进行了调研和统计,总结和分析了桥梁因洪水倒塌的一般规律,发现因洪水倒塌的桥梁普遍设计标准低,基础埋深浅;病害严重,危桥占比高;桥位附近挖沙严重,破坏河床,加剧冲刷。基于此提出了相关对策建议,为桥梁的设计建设以及维护工作提供参考。
The flood and its caused river-bed scour are always the important factors affecting the safety of bridges in service,and are the main reasons causing the collapse of bridges in service The article introduces the survey and statistics of bridge collapsing cases caused by the flood in recent 10 years in China,sums up and analyzes the general rule of bridge collapsed by flood.The results show that the design standard of the bridges collapsed by flood is generally low,the embedment depth of foundation is shallow,the fault is serious,and the proportion of damaged bridge is high.The sand excavated near bridge place is serious to damage the river bed and intensify the scour.Based on this,the relative countermeasures and proposals are put forward,which can be referred for the design,construction and maintenance of bridges
出处
《城市道桥与防洪》
2017年第1期90-92,共3页
Urban Roads Bridges & Flood Control
基金
国家自然科学基金项目(51468013)
广西科学与技术开发计划项目(桂科攻1355008-9
桂科攻14251012)
关键词
在役桥梁
洪水
垮塌案例
冲刷
bridge in service
floocl collapsingcase
scour
