Novel ultra-high-performance-concrete connector construction for expansion joint beam ends

Abstract

The invention provides a novel ultra-high-performance-concrete connector construction for expansion joint beam ends. The novel ultra-high-performance-concrete connector construction comprises ultra-high-performance-concrete connector bodies arranged at two adjacent construction beam ends and a connecting piece connected with the two connector bodies, wherein the connector bodies comprise first embedded parts and expansion device bodies, the first embedded parts are embedded to the beam ends and extend to the connector bodies, and the expansion device bodies are embedded into the connector bodies in the mode that a first connecting piece is transversely staggered and are connected with the connecting piece. All welding processes of connectors are pre-completed in a factory, a common reinforcing steel bar penetrating through joint cross sections is omitted, site 'free welding' is achieved, the construction technology of an expansion joint is greatly simplified, an expansion device can beaccurately installed in place accordingly, and the design function of the expansion device is fully developed; filling materials of the connector portions adopt ultra-high-performance concrete, the high tensile strength and the excellent endurance quality of the ultra-high-performance concrete can be fully developed, the whole life cycle cost is obviously reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a novel ultra-high performance concrete joint structure used at beam ends of expansion joints. Background technique [0002] In order to prevent the damage to the bridge structure caused by thermal expansion and contraction of the bridge structure caused by temperature changes, and to meet the expansion and displacement requirements of the beam body and beam ends, expansion joints are widely used in the bridge, road or building construction process. The mechanical properties of the existing expansion joint fillers are poor, and the crack resistance of the joint is ensured by adding steel bars. On the one hand, it increases the difficulty of on-site construction, and on the other hand, it is difficult to guarantee the long-term effect. Conventional bridge expansion devices have high requirements on the accuracy of the joint structure during the construction process, an...

AI Technical Summary

Problems solved by technology

The mechanical properties of the existing expansion joint fillers are poor, and the crack resistance of the joints is ensured by adding steel bars. On the one hand, it increases the difficulty of on-site construction, and on the other hand, it is difficult to guarantee the long-term effect

Conventional bridge expansion devices have high requirements on the accuracy of the joint structure during the construction process, and the construction is cumbersome, making it difficult to achieve the expected construction effect

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