混凝土自锚式悬索桥主梁方案比选研究  

Comparison Research on Main Beam Schemes of Concrete Self-anchored Suspension Bridge

作　　者：万鹏[1] 

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《中国市政工程》2015年第4期81-83,105,共3页China Municipal Engineering

摘　　要：自锚式悬索桥主梁的选择,应从材料适应性、结构整体受力、缆吊构件布置、景观效果、施工条件等方面综合比较,寻求合理的主梁方案。对混凝土主梁而言,常用的整体箱梁、分离式双箱梁和分离式双∏梁在材料指标、整体协调等方面各有特点。钦州市子材大桥为预应力混凝土自锚式悬索桥,跨径布置为65 m+158 m+65 m,主梁全宽35.5 m,采用支架整体现浇施工。通过参数研究、结构分析、构造布置等方面比选,确定预应力分离式双箱主梁较为适合子材大桥的各项要求。There are many factors to consider when choosing a reasonable main beam scheme for self-anchored suspension bridges. Comparison of the applicability of material, overall stress of main beam, layout of cable and anchor system, landscape effect and construction condition must be done. The whole box beam, separation-type box beam, and separation-type ∏ beam are common in the design of concrete main beam for selfanchored suspension bridges. Three types of beam have their own features. Main structure of Qinzhou Zicai Bridge is a self-anchored suspension bridge with three-span continuous prestressed concrete beam and with span arrangement(65+158+65) m. The width of overall cast-in-place beam is 35.5 m. Through parameter study, structure analysis and structural arrangement, separation-type box beam is reasonably selected to meet the design needs of Zicai Bridge.

关 键 词：自锚式悬索桥 混凝土主梁 方案比选 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]