Method for reinforcing simply-supported plate or simply-supported beam bridge

Abstract

The invention discloses a method for reinforcing a simply-supported plate or simply-supported beam bridge, and belongs to the field of bridge engineering. The method includes the steps that skewbacks are arranged on the two side faces of an abutment of a span needing to be reinforced, and attached to the abutment, and the skewbacks and the abutment form a whole; arch ribs are arranged below the portion, of the span needing to be reinforced, of plate beams, the arc ribs and the bottom of the bridge form a whole on the middle section of the plate beams, the two ends of each arch rib abut against the skewbacks on the abutment, and the two ends of each arch rib and the skewbacks form a whole; transverse linkage beams are arranged on the bottom face, of the span needing to be reinforced, of the plate beams, the direction of the transverse linkage beams is perpendicular to the length direction of the plate beams, the transverse linkage beams and the bottom face of the bridge form a whole, and the transverse linkage beams and the arch ribs also form a whole. In the way, simple plate beam load carrying is changed into plate and arch composite structure load carrying, and the bearing force and the rigidity of an original structure are greatly improved. The method has the better reinforcing effect compared with reinforcing methods such as plate adhesion.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering construction and relates to a bridge reinforcement method, in particular to a simply supported plate or simply supported girder bridge reinforced method. Background technique [0002] Among the more than 700,000 bridges in my country, bridges with small and medium-span simply supported slab structures and bridges with simply supported beam structures occupy the absolute majority in number. Due to various reasons such as design, construction and management, many bridges have quality defects before they are put into operation. Coupled with practical factors such as difficult maintenance and serious overloading, bridge diseases in operation are now common, seriously affecting bridge safety and performance. durability. In order to meet the traffic requirements, some old bridges with small and medium spans need to be demolished and rebuilt, but this method is not only uneconomical, but also...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method for strengthening simply supported slab or simply supported beam bridges, the purpose of which is to strengthen simply supported slabs and simply supported beams by using the plate-arch combination effect. The method can not only increase the bearing capacity and rigidity of the bridge slab structure, so that the reinforced simply supported slab or simply supported beam can meet the requirements of special loads passing the bridge, the method of the invention can also meet the project requirements of large-scale reinforcement and lifting, and This solves the technical problem of insufficient ability to improve the bearing capacity and stiffness of the original structure in the current reinforcement method

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