改进SWMM的下凹式立交桥内涝灾害模拟方法  

Urban Flooding Disaster Simulation Method for Concave-down Overpass Bridges by Developing SWMM

作　　者：王昊[1,2] 张永祥[1,2] 唐颖[1,2] 段智隆 王由好 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京工业大学水质科学与水环境恢复工程北京市重点实验室,北京100124

出　　处：《北京工业大学学报》2016年第9期1422-1427,共6页Journal of Beijing University of Technology

基　　金：国家科技支撑计划资助项目(2011BAC12B00)

摘　　要：为了解决下凹式立交桥经常发生内涝积水现象和暴雨洪水管理模型无法模拟积水按地形扩散问题,提出一种改进SWMM的下凹式立交桥内涝灾害模拟方法.该方法通过构建高精度立交桥数字高程模型模型得到桥区地形,同时将SWMM模拟节点溢流的方式进行改进,使溢流水体依据桥区地势进行平面流动.解决了SWMM传统模拟中节点积水无地表扩散的问题,实现了下凹式立交桥的内涝灾害过程模拟,为立交桥的内涝防治研究提供参考依据.To solve the recurrent flooding of concave-down overpass bridges and the problem that storm water management model( SWMM) cannot simulate the water diffusion on the surface,a method of urban flooding simulation on concave-down overpass bridge by developing SWMM was presented in this paper.The method built high precision DEM of overpass bridge and obtained the topography of bridge. Then,the way of junction flooding that was modeled by SWMM was developed. It made the floods flow upon the topography of bridge. The method solved the problem that the junction flooding does not diffuse on the surface in traditional simulation. The modeling of urban flooding process on concave-down overpass bridge was realized. Results show that this method provides the support for the prevention and treatment of urban flooding on overpass bridges.

关 键 词：下凹式立交桥 内涝 暴雨洪水管理模型 数字高程模型 

分 类 号：TU992[建筑科学—市政工程]