梁肋斜交空间曲面吊索异形拱桥设计关键技术  

Key Design Technology of Special Shaped Arch Bridge with Skew Beam and Rib and Curved Surface Suspender

作　　者：王永[1] 李隆 汪建群[2] WANG Yong;LI Long;WANG Jianqun(School of Economics and Management,Beijing Jiaotong University,Beijing 100044,China;College of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]北京交通大学经济管理学院,北京100044 [2]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《湖南科技大学学报（自然科学版）》2021年第2期46-51,共6页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(51408218);湖南省科技厅资助项目(14JJ2094,18A202)。

摘　　要：拱肋与桥面斜交形成造型独特的异形斜跨拱桥,可用于城市景观桥梁.以某桥为实例,阐述了梁肋斜交空间曲面吊索异形拱桥设计的关键技术.该桥主跨190 m,主梁钢箱梁全宽达33.34 m,与钢箱拱肋斜交,吊索呈空间曲面分布,体系受力复杂,施工涉及多次体系转换,工序复杂.建立了空间有限元计算模型,对桥梁施工全过程、桥梁整体稳定性和弹塑性以及局部受力复杂区域进行了仿真分析.计算结果表明,该桥各关键设计参数均满足规范要求.该梁肋斜交空间曲面吊索异形结构为拱桥结构体系的创新发展提供了新的案例.The skew intersection of arch rib and bridge deck forms a special-shape skew span arch bridge,which can be used for urban landscape bridges.The key design technology of special-shape arch bridge with skew beam and rib and curved surface suspender was discussed with a real bridge.The main span of the bridge was 190 m,the full width of the steel box girder was 33.34 m,which was obliquely intersected with the arch rib.The suspenders were distributed in a spatial curved surface,the system stress was complex,and the construction process was complicated with many system transformations involved.Finite element models were established to simulate and analyze the whole construction process of the bridge,the overall stability and elastic-plasticity of the bridge and the complex area of local forces.The calculation results show that the design meets the requirements of the code.Therefore,it provides a new case for the innovation and development of arch bridge structure system.

关 键 词：异形拱桥 仿真分析 整体稳定性 弹塑性分析 局部分析 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]