Method for arranging semi-integral hidden expansion joint for abutment and bridge girder

Abstract

The invention discloses a method for arranging a semi-integral hidden expansion joint for an abutment and a bridge girder, which comprises the steps of: first arranging a semi-integral abutment below the end of the bridge girder, arranging a sliding base on the abutment, and placing the end of a girder body on the sliding base, wherein the sliding base is independent from the abutment; arranging a crossbeam on the base in the girder body and pouring the crossbeam and the end of the girder body integrally and fastening the girder with the back wall; filling dam soil outside the back wall, arranging a butt strap on the dam soil and paving an asphalt waterproof layer on the butt strap and the bridge floor integrally; filling a foam material in the crack among the back wall, the dam soil and the semi-integral abutment; and finally arranging an effective drainage system in a position contacted with the dam soil, behind the semi-integral abutment. In the technical scheme, retraction devices at both ends of the bridge girder are omitted and a soil filled structure is adopted to solve the problem caused by extension of the bridge girder, thereby greatly improving the driving smoothness, reducing the impact of vehicles and prolonging the service life of the bridge girder effectively.

Description

technical field [0001] The invention relates to a method for setting a bridge expansion device, in particular to a method for setting a hidden expansion joint of a semi-integral abutment bridge. Background technique [0002] With the rapid development of urban construction, the development of various transportation facilities is advancing by leaps and bounds. Expressways, urban viaducts, and various bridges have been built one after another. Due to the continuous increase of traffic volume, vehicle speed, vehicle load and some problems left in the bridge construction, the damage of bridge expansion joints is very common. The damage of the bridge expansion joint joints will cause the vehicle to bump continuously when driving, the noise is disturbing, the phenomenon of jumping will be aggravated, and it will also endanger the safety of the bridge and the service life of the bridge, thereby increasing the maintenance cost of the bridge. [0003] In addition, since the expansi...

AI Technical Summary

Problems solved by technology

The damage of the bridge expansion joint joints will cause the vehicle to bump continuously when driving, the noise is disturbing, and the phenomenon of jumping will be aggravated, and it will also endanger the safety of the bridge and the service life of the bridge, thereby increasing the maintenance cost of the bridge.

[0003] In addition, since the expansion device of the bridge is exposed to the atmosphere for a long time and the operating environment is relatively harsh, the expansion device is the most vulnerable and difficult to repair part of the bridge structure

Even if the telescopic device is made of waterproof material, it is prone to water leakage during long-term use, so that salt-laden water seeps in from the telescopic device, which will accelerate the corrosion of the end of the main beam, the support and the substructure with damage

And long-term accumulated dust and garbage will fill the gap of the telescopic device, resulting in failure of the telescopic device

Severe vehicle impact will damage or loosen the bolts of the expansion device, and the damage of the expansion device at both ends of the bridge will cause a large impact load of the vehicle, worsen the driving condition and reduce the service life of the bridge

Damaged parts of the expansion device will cause damage to cars or people, and bring a lot of inconvenience to bridge management

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