钢混混合连续梁桥设计与分析  

Design and Analysis of Steel-concrete Hybrid Continuous Beam Bridge

作　　者：胡肖强 Hu Xiaoqiang(JSTI Group,Nanjing 210017,China)

机构地区：[1]苏交科集团股份有限公司,南京市210017

出　　处：《北方交通》2025年第3期1-4,9,共5页Northern Communications

摘　　要：钢混混合梁结合了钢材和混凝土两种材料的优点,主跨采用部分钢梁代替混凝土梁段。与混凝土梁相比,钢混混合梁自重减小,跨越能力提高,梁体结构高度降低,亦可节约工程造价,在大跨径梁桥中逐渐得到应用。文章结合工程实例,选择钢混混合梁边中跨比、高跨比和钢梁长度等设计参数,对结构整体有限元和钢混结合段进行精细化模型分析,认为梁体应力状态较为理想,刚度满足相关设计要求。The steel-concrete hybrid beam combines the advantages of two kinds of materials like steel and concrete,and partial steel beams for the main span replace the sections of concrete beams.Compared with the concrete beam,the steel-concrete hybrid beam has the reduced self weight,improved crossing capacity,and lower beam structure height,and can also save the construction cost.It is gradually applied in the large-span beam bridge.In combination with the engineering example,the design parameters such as ratio of side to main span,ratio of rise to span and steel beam length and etc.of steel-concrete hybrid beam are selected,so as to carry out the refined model analysis on the overall finite element and steel-concrete joint section of the structure.It is believed that the stress state of the beam is relatively ideal and the stiffness meets the relevant design requirement.

关 键 词：桥梁设计 钢混混合梁 结合段 精细化模型 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]