基于流体力学软件建模的高墩桥梁排水管道强度试验模拟分析  

Experimental Simulation and Analysis of Strength of Drainage Pipes in High Pier Bridges based on Fluid Dynamics Software Modeling

作　　者：贺伟伟[1] 王良成[1] 李晨阳 HE Wei-wei;WANG Liang-cheng;LI Chen-yang(CCCC First Highway Consultants Co.Ltd.,Xi'an 710075,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,西安市710075

出　　处：《公路》2025年第1期233-239,共7页Highway

基　　金：中交第一公路勘察设计研究院有限公司科技创新基金项目,项目编号KCJJ2021—06。

摘　　要：黄土地区桥面雨水若不能合理收集,则会形成集中水流的长期冲刷作用,影响到桥梁桩基结构的稳定性。采用定量方式研究了桥面集中排水管道压力变化规律,采用Fluent软件模型模拟管道内关键部位压力值,确定了影响桥面集中排水管道质量的关键因素。结果表明,在纵、横向管道连接部位处出现负压值,排水系统的最大负压值发生在竖向排水管与纵向排水管连接弯头处下侧0.6 m区域,竖向管道出口处压力值为0。研究结果可为公路桥梁排水管材质选择及对薄弱环节强化设计提供技术与数据支持。If the rainwater on the bridge deck is not properly collected in loess area,it will be eroded by the concentrated flow for a long time,which will affect the stability of the bridge pile foundation structure.In this paper,the pressure variation law of bridge deck drainage pipe is studied quantitatively,and it is of great significance to analyze and determine the key factors affecting the quality of the bridge deck centralized drainage pipe for scientific selection of the material of the bridge deck centralized drainage pipe.In view of the above problems,it is proposed to use the experimental model to record the pressure value of the key parts of the pipeline,and use the Fluent software model to simulate the pressure value of the key parts of the pipeline.The results show that the maximum negative pressure value of the drainage system occurs in the area 0.6 m below the elbow of the connection between the vertical drainage pipe and the vertical drainage pipe,and the pressure value at the outlet of the vertical pipe is 0.The research results can provide technical and data support for material selection of highway bridge drainage pipes and strengthening design of weak links.

关 键 词：桥梁工程 黄土地区桥面雨水 集中排水管通 管道压力 模拟分析 

分 类 号：U443.7[建筑科学—桥梁与隧道工程] U441.4[交通运输工程—道路与铁道工程]