Large-span simply supported steel truss beam structure and frame pier combined bridge structure

Abstract

The invention discloses a large-span simply supported steel truss beam structure and frame pier combined bridge structure, which is composed of two or more main beams, three or more bridge piers and supports. The main beams are arranged on the supports at the tops of the bridge piers, and arranged on an existing line, the main beams are two or more steel truss beams, the three or more bridge pierscomprise edge piers and a middle pier, the supports are arranged at the tops of the edge piers and the middle pier correspondingly, one ends of the steel truss beams are arranged on the supports of the edge piers, the other ends of the steel truss beams are arranged on the support of the middle pier, the middle pier is a frame pier and is composed of a cross beam and two or more frame vertical columns, and the cross beam is arranged on the frame vertical columns. The large-span simply supported steel truss beam structure and frame pier combined bridge structure can be applied to a small-anglecrossed work point of a newly constructed line and the existing line, has the advantages of being good in overall structure permeability, good in landscape effect, small in influence on the existingline in the construction process, high in construction speed, capable of effectively guaranteeing the safety of the existing line, low in superstructure height, high in spanning capability, capable ofeffectively lowering the line vertical section, good in economical efficiency and the like, is reasonable in structure, novel in shape, good in economical efficiency and high in practicality, and haswide application prospects.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a bridge structure in which a large-span simply supported steel truss girder structure is combined with a frame pier. Background technique [0002] At present, when new lines (railways, highways, urban rails) intersect existing lines at a small angle, the spanning method combining frame piers and simply supported beams or the spanning method of large-span structures with one span are often adopted, but for frame piers and simply supported The beam-combined structure has limited spanning capacity and poor landscape effects. There are also shortcomings such as many pier-column construction points near the existing line, long period of erecting beams on the line, and high risk; currently, because the frame pier cannot bear the weight of the long-span structure, the frame Piers are generally used in combination with small-span beam structures. For long-span structures, there are al...

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Problems solved by technology

[0002] At present, when new lines (railways, highways, urban rails) intersect existing lines at a small angle, the spanning method combining frame piers and simply supported beams or the spanning method of large-span structures with one span are often adopted, but for frame piers and simply supported The beam-combined structure has limited spanning capacity and poor landscape effects. There are also shortcomings such as many pier-column construction points near the existing line, long period of erecting beams on the line, and high risk; currently, because the frame pier cannot bear the weight of the long-span structure, the frame Piers are generally used in combination with small-span beam structures. For long-span structures, there are also disadvantages such as high cost and high construction height. Highway, urban rail) and the construction of small-angle crossing of existing lines

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