基于HEC-RAS的复杂水文边界桥梁建设影响研究  

Impact of bridge construction on complex hydrological boundaries based on HEC-RAS

作　　者：熊文雯 XIONG Wenwen(Central&Southern China Municipal Engineering Design and Research Institute Co.,Ltd.,Wuhan 430014,China)

机构地区：[1]中国市政工程中南设计研究总院有限公司,湖北武汉430014

出　　处：《水利建设与管理》2024年第12期29-34,共6页Water Conservancy Construction and Management

摘　　要：本文通过建立HEC-RAS一维水动力模型,对与河道交汇的区域桥梁建设进行了模拟计算,同时对干流下游水库不同运行情况进行了耦合分析。结果表明干流的严重顶托使支流上的桥梁建设对河道水力参数影响较小,干流下游水库的运行进一步加剧了自身及支流的壅水,应该重点关注其壅水范围内的河道岸坡稳定性及淹没区的防洪规划。本文的工作能对相似的工程提供一定的设计、计算指导。In this study,a one-dimensional hydrodynamic model was established using HEC-RAS to simulate the impact of bridge construction in areas intersecting river channels,along with a coupled analysis of various operational conditions of downstream mainstream reservoirs.Results indicate that severe backwater effects in the mainstream minimize the influence of bridge construction on tributary hydraulic parameters,while downstream reservoir operations further exacerbate backwater in both the mainstream and tributaries.Emphasis should be placed on the stability of riverbanks within the backwateraffected area and flood control planning for inundated zones.This study provides design and calculation guidance for similar engineering projects.

关 键 词：HEC-RAS 交汇河道 水流顶托 桥墩阻水 

分 类 号：TV135[水利工程—水力学及河流动力学]