The invention relates to a span self anchored suspension bridge arch cooperation system. It includes main girder, suspension suspender, arch hanger, main cable, arch rib, bridge tower, side pier and wind bracing. The main cable and arch rib are symmetrically arranged in the transverse direction of the main beam, and the main beam is connected to the main cable and arch rib by the suspension suspender and the arch hanger along the longitudinal direction of the bridge, and forms the elastic support to the main beam. The main cable cross the bridge tower, both ends anchored in the beam end, the axial pressure applied to the girder and arch rib and rigid jointed girder to girder ends, exerting axial tension, tension and pressure balance each pier supported at both ends in the whole system. The compression of the girder span composite arch bridge, self anchored suspension bridge and girder pull together, part of the axial pressure offset girder internal, solve the large span girder axial force stability problem caused by too large and the design problem of insufficient capacity of cross section. The structural system of the invention has the advantages of reasonable force, light weight of the main girder, strong crossing ability, excellent seismic and wind resistance performance, and is another good structural form of the large and medium span bridges.
【技术实现步骤摘要】
一种等跨自锚式悬索-拱梁协作体系桥梁
本专利技术属于土木工程、桥梁工程
,具体涉及一种悬索-拱协作体系桥梁,特别涉及一种等跨自锚式悬索-拱梁协作体系桥梁。
技术介绍
桥梁除了提供跨越功能外,往往还会以其独特的造型而成为一个地区的标志景观,在众多桥梁结构形式中,尤以悬索桥和拱桥曲线造型最为美观,因此,悬索桥和拱桥就成为了桥梁选型时极具竞争力的方案。悬索桥中的自锚式悬索桥是一种特殊的缆索承重桥型,不同于传统地锚式悬索桥,该桥型取消了巨大昂贵的锚碇,将主缆直接锚固在主梁上,形成了自平衡体系,既节省了锚碇的费用,还使该桥型对桥址地质条件放宽,在软土地区同样适用,受到工程界的青睐。其主要由桥塔、主梁、主缆、吊杆组成。该桥用悬挂在桥塔上的强大主缆作为主要承重结构,桥上的竖向荷载通过吊杆使主缆承受很大的拉力,主缆锚固于主梁两端,主缆拉力在主梁两端的水平分力会给主梁施加巨大的轴压力,整个结构形成一个自平衡体系。在小跨径时,主缆给主梁施加的轴向分力可以作为预应力来改善主梁的受力,但随着跨径的增大,以及主塔高度的限制,主梁受到的轴压力会大幅增大,成为了主梁截面设计时的主要控制因 ...
【技术保护点】
一种等跨自锚式悬索‑拱梁协作体系桥梁,由主梁(1)、悬索吊杆(2)、拱吊杆(3)、主缆(4)、拱肋(5)、桥塔(6)和边墩(7)组成,其特征在于:所述主缆(4)和所述拱肋(5)分别对称布置于所述主梁(1)的横桥向上方,所述主梁(1)由沿桥纵向分布的悬索吊杆(2)与主缆(4)相连接,同时,所述主梁(1)由沿桥纵向分布的拱吊杆(3)与拱肋(5)相连接,通过主缆(4)和拱肋(5)共同形成对主梁(1)的弹性支撑;所述主缆(4)中部跨过桥塔(6)顶部,其两端分别锚固于主梁(1)两端,给主梁(1)施加了轴向压力,同时,所述拱肋(5)和所述主梁(1)两端刚接,给主梁(1)施加了轴向拉力, ...
【技术特征摘要】
1.一种等跨自锚式悬索-拱梁协作体系桥梁,由主梁(1)、悬索吊杆(2)、拱吊杆(3)、主缆(4)、拱肋(5)、桥塔(6)和边墩(7)组成,其特征在于:所述主缆(4)和所述拱肋(5)分别对称布置于所述主梁(1)的横桥向上方,所述主梁(1)由沿桥纵向分布的悬索吊杆(2)与主缆(4)相连接,同时,所述主梁(1)由沿桥纵向分布的拱吊杆(3)与拱肋(5)相连接,通过主缆(4)和拱肋(5)共同形成对主梁(1)的弹性支撑;所述主缆(4)中部跨过桥塔(6)顶部,其两端分别锚固于主梁(1)两端,给主梁(1)施加了轴向压力,同时,所述拱肋(5)和所述主梁(1)两端刚接,给主梁(1)施加了轴向拉力,主梁(1)中拉压相互平衡;所述主梁(1)底部四周通过边墩(7)支撑。2.根据权利要求1所述的一种等跨自锚式悬索-拱梁协作体系桥梁,其特征在于悬索吊杆(2)竖直方向与所述主缆(3)相接处用索夹固定,所述拱吊杆(3)一端竖向锚固在所述拱肋(5)上,各吊...
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