A reinforced seamless elastic body expansion device and its construction method

Abstract

The invention discloses a reinforced seamless elastic body expansion device and a construction method thereof. The expansion device is arranged on a beam body foundation with seams and a concrete leveling layer and includes a cover joint assembly, a side reinforcement assembly, an expansion assembly and an elastic body assembly . The construction method includes the following steps: cleaning the two beam ends of the beam body foundation with seams and exposing the embedded steel bars; The fixed end and the movable end of the anchor bar are connected and positioned with the pre-embedded steel bar of the beam body foundation, and the road surface and the concrete leveling layer with seam are poured; the anchor assembly is installed, and the cover seam assembly is placed; assembled into a telescopic assembly, the free end of the reinforcement rod Stretch into the movable containment box; pour on-site until it is flush with the road surface to form an elastomer component, and complete the construction after curing. The invention effectively increases the bonding area with the elastic body, improves the bonding strength, protects the asphalt concrete on the road surface, and improves the service life of the product.

Description

technical field [0001] The invention relates to the technical field of bridge expansion devices, and more specifically, relates to a reinforced seamless elastic body expansion device capable of adapting to three-dimensional movement of structures and a construction method thereof. Background technique [0002] Bridge expansion joints are one of the important components of bridge structure design. They are designed to meet the needs of expansion and deformation of beams and bridge decks caused by temperature changes, concrete shrinkage and creep, and various loads. A device for driving across a bridge deck. It is the weakest part of the bridge structure. It directly bears the impact of vehicle load and is exposed to the air for a long time. Therefore, it is easy to be damaged and the maintenance cost is high. If it is damaged and not maintained in time, it will affect the operation and safety of normal traffic. [0003] The joint between the traditional seamless telescopic d...

AI Technical Summary

Problems solved by technology

Due to the excellent characteristics of the polymer elastomer filling material used and the targeted structural design, it not only has the functions of traditional expansion joints to adapt to structural movement, shock absorption and noise reduction, but also overcomes the traditional expansion joints that are easy to leak and in harsh conditions. Disadvantages of short life under usage conditions

However, there are still some problems in this scheme: under various loads, the central part appears to be deflected due to insufficient bending rigidity, which affects driving comfort; the polyurethane material is directly bonded to the concrete on both sides of the road, while the concrete on both sides It is easy to be crushed under repeated vehicle loading, resulting in problems such as failure of the bonding surface

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