Sectional construction system and method for urban viaduct renewal

Abstract

The invention provides a sectional construction system and method for urban viaduct renewal. The system comprises a temporary bridge span and moving bridging equipment; when the bridge span is to be replaced and renewed, the temporary bridge span is moved to to-be-renewed bridge spans through the moving bridging equipment, two ends of the temporary bridge span are respectively docked with two neighboring spans of the to-be-renewed bridge spans to form a temporary traffic lane, and passage of vehicles is unaffected when the bridge spans are renewed. The temporary bridge span can be moved to one side of the to-be-renewed bridge spans through the moving bridging equipment, bridge renewal construction efficiency of viaducts is improved; the to-be-renewed bridge spans do not need to be demounted in explosion by demounting the to-be-renewed bridge spans and mounting the renewed bridge spans on the viaducts, casting of the new bridge spans by erecting all-round scaffold and steel-structure portal supports is not needed, dust and noise pollution is reduced greatly, floor space and construction period which are needed in construction are saved, and social efficiency is improved.

Description

technical field [0001] The invention relates to the field of viaduct construction and maintenance, in particular to a segmented construction system and method for updating urban viaducts. Background technique [0002] With the rapid development of urban traffic, higher requirements are put forward for the urban viaduct system, and there is an urgent need to update the existing viaduct to cope with the increasing pressure of urban traffic. Because urban viaducts are generally located in downtown areas and bear the main traffic pressure in the urban traffic system, it is required that urban viaduct renewal projects should shorten the construction period as much as possible and the construction should not hinder traffic at the same time, and put forward requirements for dust prevention, noise reduction, civilized construction, etc. higher requirements. [0003] The renovation of existing urban viaducts generally adopts the scheme of demolition by blasting and on-site crushing ...

AI Technical Summary

Problems solved by technology

However, such methods involve the demolition of bridge deck systems, bridge expansion joints, bridge girders and pier caps, the erection of full scaffolding under the bridge and steel structure portal support frames, and require a large number of pedestals to be prefabricated on the construction site. section, which will generate serious dust and noise pollution, and occupy a large number of construction sites, greatly increasing the construction period

During the construction process, the bridge needs to be closed, seriously affecting traffic

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