Grouting sleeve, fabricated bridge pier connected by grouting sleeve and construction method of fabricated bridge pier

Abstract

The invention discloses a grouting sleeve, a fabricated bridge pier connected with the grouting sleeve and a construction method of the fabricated bridge pier. The fabricated bridge pier comprises a cylinder body internally provided with a grouting cavity, gaskets arranged at the two ends of the cylinder body correspondingly and a grouting material layer arranged in the grouting cavity of the cylinder body in a filling mode. A grout outlet communicated with the grouting cavity is formed in the upper portion of the cylinder body, a grout inlet communicated with the grouting cavity is formed in the lower portion of the cylinder body, a connecting steel bar is anchored in the grouting material layer, and the end of the connecting steel bar penetrates through the gasket and extends out of the cylinder body. According to the invention, the structure is reliable, construction is convenient and fast, grouting materials are effectively prevented from sliding out of the sleeve, and the bonding force between the grouting materials and the inner wall of the sleeve is enhanced.

Description

technical field [0001] The invention relates to the technical field of prefabricated assembled concrete structures, in particular to a grouting sleeve, an assembled bridge pier connected by the grouting sleeve and a construction method thereof. Background technique [0002] With the continuous advancement of modern industrial technology, engineering construction is developing towards a green and sustainable trend. As a product of this era, the prefabrication and assembly technology of concrete structures has the characteristics of controllable production quality standards, high degree of industrialization, short on-site operation time, and low environmental pollution. At the same time, it shortens the traffic delays and road closures caused by urban buildings or bridge construction. , can provide better services to the public. This technology uses industrialized prefabrication plants instead of traditional on-site casting, and assembles prefabricated parts into a complete s...

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Problems solved by technology

[0004] However, engineering experience and experimental research show that the form of bond failure of the grouting sleeve is mainly the bond failure between the grouting material and the inner wall of the sleeve, that is, the grouting material and the steel bars slide out of the sleeve together. Design defects in structural details reduce the connection strength of the grouting sleeve; at the same time, construction errors are an inevitable phenomenon in actual engineering. In the assembly of prefabricated components, the eccentric phenomenon of reinforcement often occurs, that is, the reinforcement is not on the central axis of the sleeve, and the concrete of the reinforcement Reduced or even zero protective layer thickness, resulting in reduced connection strength

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