Plate girder bridge reinforcing structure and construction method thereof

Abstract

The invention discloses a plate girder bridge reinforcing structure. The plate girder bridge reinforcing structure comprises a corrugated steel sheet arch shell and a concrete strengthening foundation, wherein steel sheet end walls are both arranged on the upstream side and the downstream side of a plate girder bridge; the upper edges of the steel sheet end walls are connected with a plate beam; and a concrete filling body is poured within a space, which is enclosed by the corrugated steel sheet arch shell, a left side strengthening foundation, a left side bridge abutment, the plate beam, a right side bridge abutment, a right side strengthening foundation and the steel sheet end walls. Through adoption of the plate girder bridge reinforcing structure, the bearing force of the bridge is greatly increased and the integrated transverse rigidity of the bridge is enhanced; therefore, each girder of the whole bridge is uniformly stressed so that a single sheet bearing state is avoided and the service life of the bridge is prolonged. The invention further discloses a construction method for the plate girder bridge reinforcing structure. The construction method for the plate girder bridge reinforcing structure comprises the following steps of foundation strengthening construction, corrugated steel sheet arch shell construction, steel sheet end wall construction and concrete filling body construction. Through adoption of the construction method, the plate girder bridge reinforcing structure can be rapidly and effectively constructed.

Description

technical field [0001] The invention belongs to the technical field of slab girder bridge reinforcement, and in particular relates to a slab girder bridge reinforcement structure and a construction method thereof. Background technique [0002] With the increase of the actual traffic load of active bridges, a large number of old bridges can no longer meet the requirements of use. Among the highway bridges in active service, quite a large part needs to increase the bearing capacity or repair and strengthen. Especially for those bridges with a certain load-bearing potential and little damage, through appropriate reinforcement measures, the bearing capacity of the bridge can be enhanced, its traffic capacity can be restored and improved, and its life can be extended. This not only saves money, but also speeds up the construction, and avoids the pollution problems caused by the demolition of old bridges. [0003] In the construction of highway bridges and urban bridges, slab gi...

AI Technical Summary

Problems solved by technology

However, the reinforcement I-beam is suspended at the bottom of the girder slab, which affects the appearance of the bridge; and, for those slab bridges that are often subjected to overloading and the existing structure can no longer meet the load requirements, and the slab bridges with low design standards in the early construction, It is also necessary to seek reinforcement solutions through other means

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