Simply supported steel truss girder stiffened through arch bridge
A steel truss girder and simply supported technology, which is applied to the field of under-supported simply supported steel truss girder stiffened arch bridges, can solve the problem that the end corners of large-span simply supported steel truss girder railway bridges are difficult to meet the current specifications, and achieve significant economic benefits and improve Overall stiffness, the effect of ensuring overall stability
Inactive Publication Date: 2016-03-09
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology
[0003] The purpose of the present invention is to address the defects of the prior art, to provide a kind of under-supported simply supported steel truss girder stiffened arch bridge, which solves the problem that the beam end angles of long-span simply supported steel truss girder railway bridges are difficult to meet the current norms
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[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.
[0015] As shown in the figure, the present invention provides an under-supported simply supported steel truss girder stiffened arch bridge, which includes two main trusses 1 arranged in parallel and perpendicular to the ground. The bridge deck system 16, the tops of the two main trusses 1 are covered with stiffening arches 2 along the length direction of the bridge deck system 16, and the two ends of the stiffening arches 2 along the length direction are fixedly connected to the ends of the two main trusses 1 respectively.
[0016] The stiffened arch 2 includes two parallel arch rings 21 , arch flat joints 22 and suspenders 23 . The two arch rings 21 are arranged in one-to-one correspondence with the two main trusses, and the two ...
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The invention provides a simply supported steel truss girder stiffened through arch bridge. The simply supported steel truss girder stiffened through arch bridge comprises two main trusses arranged in parallel; a bridge deck system is arranged between the two main trusses; a stiffening arch is arranged over the tops of the two main trusses in an extension direction of the bridge deck system; the two ends of the stiffening arch are fixedly connected with end portions of the two main trusses, respectively. The simply supported steel truss girder stiffened through arch bridge is used for solving the problem that a girder-end corner of a large-span simply supported steel truss girder railway bridge cannot satisfy the current specifications easily.
Description
technical field [0001] The invention belongs to the field of bridge design, and in particular relates to an under-supported simply supported steel truss girder stiffened arch bridge. Background technique [0002] Steel truss bridges have the advantages of fast construction speed and little impact on existing lines under the bridge. They are often used when new railways cross existing roads, railways and other structures, or when construction schedules are tight. At present, railway steel truss girders mainly include continuous steel truss girders, simply supported steel truss girders, and combinations of steel truss girders and other structures. Simply supported steel truss girders have the advantages of simple structure, flexible layout, quick construction, and economical applicability, but their economic spans are 60m to 120m. When developing to larger spans, the beam end angles are often difficult to meet the current "High-speed Railway Design Code" requirements. In ord...
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IPC IPC(8): E01D6/02E01D4/00
CPCE01D6/02E01D4/00E01D2101/30
Inventor 高文军夏正春李光凤郝武一曾敏印涛
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP