陕西水利Issue(8)：9-12,20,5.
基于二维水动力模型的桥梁扩建工程方案比较研究
Comparative Study of Bridge Expansion Schemes Based on a Two-Dimensional Hydrodynamic Model
费晓磊 1苏丹 2何向阳 1王朝霞 1干家欣 1袁伟 1陈红星3
作者信息
- 1. 淮安市水利勘测设计研究院有限公司,江苏淮安 223001
- 2. 浦口区水务局,江苏南京 210000
- 3. 丹徒区宝堰镇水利农机管理服务站,江苏 镇江 212125
- 折叠
摘要
Abstract
Using the main bridge expansion project of the Huai River grand bridge on the Xinyang expressway as a case study,this paper explores optimal bridge expansion schemes.A two-dimensional hydrodynamic model is employed to analyze the effects of different span configurations—combined with the existing old bridge piers—on river flood conveyance from the aspects of flow patterns,scouring,and backwater rise.The results indicate that Scheme 2,which features a wide-span and large pier design with a main span of 242 meters,has less impact on flood discharge capacity in the section of the river with the existing bridge than Scheme 1,which has a narrower span configuration(160+80 meters).The findings demonstrate that bridge expansion should comprehensively consider both hydraulic and navigation requirements,and that the arrangement of pier locations and span lengths should be optimized to minimize adverse effects on flood conveyance.This study provides a scientific basis for decision-making by relevant authorities and serves as a reference for similar bridge expansion projects.关键词
扩容改造/淮河特大桥/二维水动力模型/行洪影响Key words
Capacity expansion/Huai River grand bridge/two-dimensional hydrodynamic model/flood conveyance impact分类
建筑与水利引用本文复制引用
费晓磊,苏丹,何向阳,王朝霞,干家欣,袁伟,陈红星..基于二维水动力模型的桥梁扩建工程方案比较研究[J].陕西水利,2025,(8):9-12,20,5.
