五跨连续中承式钢箱拱桥设计  

Design of a Half-Through Steel Bridge with Five Spans

作　　者：曹海顺 

机构地区：[1]上海林同炎李国豪土建工程咨询有限公司,上海200437

出　　处：《上海公路》2018年第4期29-32,M0002,M0003,共6页Shanghai Highways

摘　　要：济宁泗河大桥主桥为(30+95+130+95+30) m中承式钢结构系杆拱桥,拱肋总体内倾形成提篮拱。三角区设置上肢,形成桁架结构,拱肋下肢的受力更均匀。加劲梁通过吊杆或立柱支撑于拱肋,吊索区端部设伸缩缝,纵向设阻尼限位装置。拱肋、纵梁及立柱间通过整体焊接节点连接。通过组合布置通长索和主跨节段索,解决了主跨、次跨拱的不平衡水平力问题。介绍该中承式多跨拱桥结构构造及设计特点。The main bridge of Si-he Bridge in Jining City of Shandong Province is a half-through steel tie-arch bridge, whose span arrangement is(30 + 95 + 130 + 95 + 30)m and it is also a basket handle arch bridge. By setting up upper chord, truss is formed and stress of bottom chord is more uniform. The stiffened girder is supported by hangers or columns, with expansion joint at girder end in hanging cable region, with damper installed vertically. The arch ribs, longitudinal girders and columns are connected by the integral welding joint. By combination of full-length tie and main span staged tie, the problem of unbalanced horizontal force between main span and second span is finally solved. This paper highlights the structural formation and design feature of the half-through and multi-span arch bridge.

关 键 词：中承式桥 系杆拱 连拱桥 钢结构 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]