空间扭索面曲塔斜拉桥塔梁固结区构造优化与施工技术研究  

Structure Optimization and Construction Technology Analysis of the Tower-girder Consolidation Area of a Cable-stayed Bridge with Spatial Twist-cable Plane and Curved Tower

作　　者：聂斌 底江天 孙旭霞 白志娟 姜旭[3] 罗程巍 NIE Bin;DI Jiangtian;SUN Xuxia;BAI Zhijuan;JIANG Xu;LUO Chengwei(Chengdu Communications Investment Group Co.,Ltd.,Chengdu,Sichuan 610000,China;Tongji Architectural Design(Group)Co.,Ltd.,Shanghai 200092,China;College of Civil Engineering,Tongji University,Shanghai 200092,China;Department of Civil Engineering,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China)

机构地区：[1]成都交通投资集团有限公司,四川成都610000 [2]同济大学建筑设计研究院(集团)有限公司,上海200092 [3]同济大学土木工程学院,上海200092 [4]上海大学力学与工程科学学院土木工程系,上海200444

出　　处：《施工技术（中英文）》2024年第15期58-61,116,共5页Construction Technology

基　　金：国家自然科学基金(52278207);上海市自然科学基金(21ZR1466100)。

摘　　要：对空间扭索面曲塔斜拉桥塔梁固结区进行局部精细化建模与分析,解决结构截取细部尺度时面临的荷载选择与约束问题。针对固结区局部应力集中问题,优化设计方案与区域构件受力,保证结构安全。根据优化后的固结区合理构造研究关键施工技术,通过合理划分施工节段,实现少支架吊装施工。The finite element analysis of the local modeling of the tower-girder consolidation area of a cable-stayed bridge with spatial twist-cable plane and curved tower is carried out in order to solve load selection and constraints problem when the detail scale of the complex joint areais cut off.The local stress concentration problem which can have serious implications to structural safety,has been solved by optimizing structural design and decreasing the stress on the consolidation area.Using less support structure for lifting and installation on each reasonable construction section is defined as the key construction technology based on the analysis of structure optimization of the consolidation area.

关 键 词：斜拉桥 塔梁 空间结构 固结 施工技术 

分 类 号：TU745[建筑科学—建筑技术科学]