摘要
桥梁是公路交通建设的重要组成部分。桥梁横跨河流、侵占河道行洪面积、壅高水位、改变局部流态,对沿河两岸堤防造成影响。按照河道管理范围内建设项目管理的有关规定,桥梁在建设时,需进行防洪影响评价,而对桥梁壅高水位及引起的冲淤变化计算是防洪影响评价计算的一项重要内容。为此结合东莞市莞深高速公路附城至石碣段工程东江南支流特大桥建设,利用有限元法,对桥梁建成后河流的局部水位壅高和流态变化进行分析评价。
Bridges are import components of highway construction.However,their piers decrease the flood section area,increase the water level and thus influence the embankment.According to the corresponding provisions,we should assess the influence on flood control before the construction of any bridge.Therefore,the computation of water level increase plays of an important part in flood control.Aiming at assessing the influence of bridge pier on flood control,this paper analyzes this problem in details using finite element method.
出处
《广东水利电力职业技术学院学报》
2006年第1期35-38,共4页
Journal of Guangdong Polytechnic of Water Resources and Electric Engineering
关键词
防洪影响
平面二维计算
桥梁
有限元法
flood control
depth-averaged 2D numerical modeling
bridge
finite element method
