Composite seamless expansion joint for bridge

Abstract

The invention belongs to the technical field of expansion joint materials, and particularly relates to a composite seamless expansion joint for a bridge. The technical scheme comprises that a composite component, which is vulcanized and compressed by multiple layers of steel plates and rubber layers in an alternate stacking manner, is built on two adjacent fabricated parts used for constituting the bridge; stones are heated to 100-150 DEG C and paved into grooves between the composite component and bridge deck pavement layers on two sides; and then asphalt heated into a liquid state is poured in for punning. The expansion joint with the structure and a preparation construction method of the expansion joint have the characteristics of simple structure and convenience in construction, and can be applicable to composite seamless expansion joints of various bridges.

Description

technical field [0001] The invention belongs to the technical field of expansion joints, in particular to a bridge composite seamless expansion joint. Background technique [0002] Expansion joints are the connection mechanism used to form the bridge deck concrete prefabricated parts. The expansion joints currently used are steel structures. The expansion joints of this structure can generally only be used for small and medium-sized bridges with gaps of no more than 80 cm in width. It is difficult to apply to the wide gap between the two ends of the bridge and the prefabricated parts of the bridge deck. In addition, there are the following problems: first, bridge expansion joints need to be repaired and replaced after aging and damage, and most bridges are located on main arterial roads or expressways with large traffic volumes, and traffic is often blocked due to maintenance and replacement, causing traffic damage. Great pressure; second, most of the original expansion joi...

AI Technical Summary

Problems solved by technology

[0002] Expansion joints are used to form the connection mechanism between concrete prefabricated parts of the bridge deck. The expansion joints currently used are steel structures. The expansion joints of this structure can generally only be used for small and medium-sized bridges with gaps of no more than 80 cm in width. Difficult to apply, especially between the wide gaps between the two ends of the bridge and the prefabricated parts of the bridge deck

In addition, there are the following problems: First, bridge expansion joints need to be repaired and replaced after they are aged and damaged, and most bridges are located on main arterial roads or expressways with large traffic volumes, and traffic is often blocked due to maintenance and replacement, causing traffic accidents. Great pressure; second, most of the original expansion joints are replaced by steel expansion joints, which is expensive and takes a long time to maintain, usually about a week; third, during the construction and maintenance period, the construction is basically open to traffic, and the vehicles cause vibration to the bridge , resulting in the expansion joint concrete in maintenance is difficult to achieve the ideal strength, the service life is greatly shortened, resulting in a great waste of manpower and funds

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