Multi-combination system arch bridge and construction method thereof

Abstract

The invention discloses a multi-combination system arch bridge and a construction method thereof. The multi-combination system arch bridge comprises a middle vehicle bridge and two side pedestrian bridges. Two main arches and two auxiliary arches are symmetrically arranged on the two sides of the middle vehicle bridge; each main arch is connected with a main beam of the middle vehicle bridge through a plurality of main suspenders; each auxiliary arch is connected with a main beam of the lateral mannequin bridge on the corresponding side through a plurality of auxiliary suspenders; each main arch comprises a main arch rib inclined towards the center direction of the middle bridge; each auxiliary arch comprises an auxiliary arch rib inclined towards the outer side of the middle bridge; the main arch rib and the auxiliary arch rib which are arranged on the same side of the mid-width vehicle bridge are connected through a plurality of connecting rods to form a combined arch rib; and one side of each side width mannequin bridge is connected with the corresponding side of the middle width driving bridge through a two-way displacement steel pin. The construction method comprises the following steps: firstly, constructing the middle vehicle bridge, mounting the main arches, the auxiliary arches and the connecting rod, and tensioning the main suspenders; and then, constructing the lateral mannequin bridges, and tensioning the auxiliary suspenders. According to the invention, the problem of landing slope connection during bridge construction can be solved, and rapid construction of the bridge can be realized.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a multi-combination system arch bridge and a construction method thereof. Background technique [0002] Bridge engineering often encounters the problem of girder height limitation caused by road slopes, which brings great difficulties to bridge design. In addition, due to the restrictions of red lines and planned roads on urban bridges, it brings great challenges to the setting of non-bridges. The conventional design scheme adopts the continuous beam-arch composite structure, which can only solve the problem of the height limitation of the bridge for vehicles, but cannot solve the problem of landing of the non-human bridge. [0003] In the prior art, the layout of the pedestrian bridge needs to be considered for urban bridges. The conventional design scheme is that the pedestrian bridge is used as the cantilever of the vehicle bridge, and the pedestrian bridge and th...

AI Technical Summary

Problems solved by technology

[0002] Bridge engineering often encounters the problem of limited beam height caused by road slopes, which brings great difficulties to bridge design

In addition, due to the restrictions of red lines and planned roads on urban bridges, it brings great challenges to the setting of non-bridges

The conventional design scheme adopts the continuous beam-arch composite structure, which can only solve the problem of the height limitation of the bridge for vehicles, but cannot solve the problem of the landing of the non-human bridge

[0003] In the prior art, the layout of the pedestrian bridge needs to be considered for urban bridges. The conventional design scheme is that the pedestrian bridge is used as the cantilever of the vehicle bridge, and the pedestrian bridge and the vehicle bridge are fixed. However, long-term effects such as temperature load after consolidation will cause steel - The secondary internal force of the mixed composite structure is relatively large

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