钢桁架栈桥全尺度精细化建模及动力模态分析  

Full-scale Refined Modeling and Dynamic Modal Analysis of a Steel Truss Trestle

作　　者：张旭恺 计子凡 蒋学炼[1] 刘红彪[3] ZHANG Xukai;JI Zifan;JIANG Xuelian;LIU Hongbiao(Tianjin Key Laboratory of Civil Building Structure Protection and Reinforcement,TCU,Tianjin 300384,China;Bridge Tunnel and Underground Space Brounch,Zhuhai Institute of Urban Planning&Design,Guangdong 519000,China;Tianjin Research Institute of Water Transport Engineering,Ministry of Communications,Tianjin 300456,China)

机构地区：[1]天津城建大学天津市土木建筑结构防护与加固重点实验室,天津300384 [2]珠海市规划设计研究院,桥隧与地下空间分院,广东519000 [3]交通运输部天津水运工程科学研究所,天津300456

出　　处：《天津城建大学学报》2023年第3期192-196,共5页Journal of Tianjin Chengjian University

基　　金：天津市教委科研计划重点项目(2019ZD16);天津市自然科学基金重点资助项目(18JCZDJC10010)。

摘　　要：基于设计图纸和现场实测,在HYPERMESH中建立了大跨度钢桁架栈桥的全尺度实体模型,通过网格剖分转化为以壳单元为基础的三维精细化计算模型,导入ABAQUS实现了有限元建模.与现场实测数据对比表明,全尺度精细化有限元模型能够较准确地模拟栈桥结构的动力性能,其精度满足工程要求.Based on the design drawings and on-site measurements,a full-scale solid model of a long-span steel truss trestle was established in HYPERMESH,which was transformed into a 3D refined calculation model based on shell elements through mesh division.Then,the calculation model was imported into ABAQUS to realize finite element modeling.The comparison with the field measured data shows that the full-scale refined finite element model can accurately simulate the dynamic performance of the trestle structure,and its accuracy meets the engineering requirements.

关 键 词：钢桁架栈桥 HYPERMESH建模 网格优化 模态分析 

分 类 号：TU391[建筑科学—结构工程]