多跨连拱跨海景观桥关键技术研究  

Study on Key technology of Multi-span Continuous Arch Landscape Bridge Crossing Sea

作　　者：杨帆[1] 

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海市200092

出　　处：《城市道桥与防洪》2017年第1期51-54,共4页Urban Roads Bridges & Flood Control

摘　　要：多跨连拱景观桥景观优美、造价不高、施工技术成熟。对多跨连拱桥的总体布置、计算、施工、耐久性进行了分析和设计。主拱上方会与腹拱形成一个三角框架体系,由此产生的温度力十分大,正常的配筋根本无法满足要求。故需将腹拱与主拱断开,腹拱采用简支方式支撑在主拱上。跨海桥梁设计中,耐久性设计是一个关键点,需采取增大保护层、控制裂缝、表面涂装及添加阻锈剂等综合措施。The multi-span continuous arch landscape bridge has the advantages of beautiful landscape low construction cost and known construction technology.The article analyzes the overall layout;calculation,design,construction and durabi lity of multi-span conti nuous arch bridge A triangle frame system is formed by the upper of main arch with the web arch so as to produce the great temperature force The normal rei nforcement is hard to meet the requi rements at alI.Therefore it is requi red to separate the web arch from the mai n arch.The web arch is supported on the mai n arch by the si mple supporti ng mode The durabi lity design is a key point in the design of cross-sea bridge The comprehensive measures of increasing the protection layer,controlIing the cracks,implementi ng the surface coating and adding the corrosion i nhi bitor are requi red to take

关 键 词：多跨连拱 水平力 耐久性 施工顺序 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]