基于等效模型的波形钢腹板渡槽结构静力性能研究  

Research on Static Performance of Corrugated Steel Web Aqueduct Structure Based on Equivalent Model

作　　者：马如进[1] 邹明明 殷亮[2] 杨善红[2] 朱宇[2] MA Rujin;ZOU Mingming;YIN Liang;YANG Shanhong;ZHU Yu(Department of Bridge Engineering,Tongji University,Shanghai 200092,China;Anhui Transport Consulting&Design Institute Co.,Ltd.,Hefei 230088,China)

机构地区：[1]同济大学桥梁工程系,上海200092 [2]安徽省交通规划设计研究总院股份有限公司,合肥230088

出　　处：《结构工程师》2022年第2期1-7,共7页Structural Engineers

摘　　要：淠河总干渠渡槽工程采用桁架式梁拱组合体系,主跨跨径达到110 m。槽身侧壁挡水板采用波形钢腹板。针对波形钢腹板结构,目前多采用建立三维精细化板壳模型的方法开展其结构性能研究,建模过程繁琐且计算效率较低。基于刚度等效原理提出一种将三维波形钢腹板简化为二维正交异性平钢板的等效分析方法。首先建立渡槽工程三维波形钢腹板精细化模型及采用简化方法等效的正交异性平钢板模型,然后开展自重和水荷载下结构静力性能分析,最后对比分析两类模型的静力分析结果及相对误差。研究表明:等效平钢板模型与三维精细化板壳模型计算结果吻合较好,等效分析方法具有较高的准确性和可靠性,可为波形钢腹板结构提供一种简便的分析方法,并显著提高计算效率。The Pi-he main channel aqueduct structure adopts a truss-type beam-arch composite system with main span of 110m.The corrugated steel webs are used for the water retaining plate on the sidewall of the trough body.For corrugated steel web structure,the current researches show that the method of building 3D refined plate shell model is mostly used to analyze the structural performance,which is cumbersome and with low computational efficiency.Therefore,based on the principle of stiffness equivalence,an equivalent analysis method is proposed to simplify the three-dimensional corrugated steel web into a two-dimensional orthotropic steel plate.Firstly,a 3D refined model of corrugated steel web and an orthotropic steel plate model using the equivalent method for aqueduct structure were established.Then the structural static performance analysis was carried out.Finally,the static response and relative error of the two models were compared.The results show that the calculation results of the equivalent orthotropic plate model are in good agreement with that of the 3D refined plate shell model,and the equivalent method has high accuracy and reliability.This study can provide a simple method for the analysis of corrugated steel web structure and improve the calculation efficiency.

关 键 词：渡槽结构 桁架式梁拱组合体系 波形钢腹板 正交异性钢板 刚度等效模型 

分 类 号：TV311[水利工程—水工结构工程] TV672.3