水库工作桥洪水标准选取及设计要点分析  

Analysis of Flood Standard Selection and Design Considerations for Reservoir Work Bridge

作　　者：岳雨欣 YUE Yuxin(Shaanxi Province Institute of Water Resource and Electric Power Investigation and Design(Group)Co.,Ltd.,Xi′an,Shaanxi 710001,China)

机构地区：[1]陕西省水利电力勘测设计研究院(集团)有限公司,陕西西安710001

出　　处：《水利与建筑工程学报》2025年第2期155-161,共7页Journal of Water Resources and Architectural Engineering

基　　金：陕西省水利科技计划项目“陕西省水利工程地质灾害研究”(2018slkj-14)。

摘　　要：为了探明水库工作桥设计中存在的跨行业规范冲突及工程特性差异问题,以某水库连接工作桥为研究对象开展系统性分析,采用有限元梁格模型计算和方案比选,研究洪水标准协调机制、超限荷载承载力验证、施工制约因素以及桥梁设计受水工建筑物影响等关键技术难题。结果表明:连接工作桥应与水工建筑物保持防洪标准一致性,当水工建筑物洪水重现期达100年时,桥梁设计洪水频率需相应提升至1/100;应用midas Civil建立的预应力混凝土梁格模型显示,在650 kN超限荷载作用下结构所有截面的应力均小于截面抗力,主梁挠度值小于计算跨径的1/600;方案比选揭示山区水库工作桥结构形式选择受制于架设条件而非单纯经济指标。水库工作桥布设选型要结合水工建筑物综合考虑,遵循防洪标准协调原则进行设计。To investigate the cross-disciplinary specification conflicts and engineering characteristic discrepancies in reservoir work bridge design,this study conducted a systematic analysis of connecting work bridge at a specific reservoir.By employing finite element beam-grid model calculations and comparative scheme evaluation,the research addresses critical technical challenges including flood standard coordination mechanisms,verification of overload bearing capacity,construction constraints,and the impact of hydraulic structures on bridge design.Results demonstrated that connection work bridges should maintain consistency in flood prevention standards with hydraulic structures.When the flood recurrence period of hydraulic structures reaches 100 years,the design flood frequency of the bridge should be correspondingly increased to 1/100.The prestressed concrete beam-grid model established using midas Civil showed that under a 650 kN overload,the stresses of all sections of the structure were less than the section resistance,and the deflection of the main beam was less than 1/600 of the calculated span length.The scheme comparison revealed that the selection of structural forms for reservoir work bridge in mountainous areas is constrained by erection conditions rather than purely economic indicators.Adhering to flood protection standard coordination principles,bridge layout configurations must be determined through integrated consideration with hydraulic structures when designing reservoir work bridge.

关 键 词：水库工作桥 防洪标准协调 梁格模型分析 山区施工制约 设计要点 

分 类 号：TV312[水利工程—水工结构工程]