Prefabricated body wet joint connection structure and construction method thereof by wet-connection dry-construction

Abstract

The invention discloses a prefabricated body wet joint connection structure and a construction method thereof by wet-connection dry-construction. The structure at least comprises a first prefabricated body and a second prefabricated body which are connected sequentially, wherein a plurality of shear key grooves are alternately formed in the end face of the first prefabricated body; shear key convex bodies corresponding to the shear key grooves are arranged at the end face, in butt joint with the first prefabricated body, of the second prefabricated body; a plurality of first draining troughs which are parallel one another are formed in the end face of the first prefabricated body, and second draining troughs which are parallel one another are formed in the end face, in butt joint with the first prefabricated body, of the second prefabricated body; and the first draining troughs and the second draining troughs are distributed in a staggered manner. According to the method, the first draining troughs and the second draining troughs which are arranged in a staggered manner are additionally arranged in butt-joint end faces of two adjacent prefabricated bodies, so that the joint surfaces can be subjected to grouting construction, and all gaps in the joint surfaces are blocked with cement mortar to form a complete sealed protection system. Furthermore, the prefabricated body wet joint connection structure has the advantage of durability.

Description

technical field [0001] The invention belongs to the technical field of bridge prefabricated assembly structures, and specifically refers to a prefabricated body wet joint connection structure and a wet joint dry construction method thereof. Background technique [0002] At present, the processing of stitching seams mainly includes two ways of dry seams and wet seams. The dry joint is to use solvent-free epoxy resin cement between the segments in the dry joint construction to bond the two adjacent beam segments into a whole. The connection between the prefabricated blocks is mainly through the shear bond on the contact surface and the pre-pressure on the joint surface. The function of the epoxy resin is only to isolate the air to form a protective effect on the prestressed steel cables. The epoxy resin is used The traditional dry joint method has the problem of aging of organic materials, which affects the firmness and durability between two adjacent beam sections. The wet ...

AI Technical Summary

Problems solved by technology

The connection between prefabricated blocks is mainly through the shear bond on the contact surface and the pre-pressure on the joint surface. The function of epoxy resin is only to isolate the air to form a protective effect on the prestressed steel cables. Epoxy resin is used The dry joint method has the problem of aging of organic materials, which affects the firmness and durability between two adjacent beam sections

Wet joints are prefabricated by prestressed concrete beams, cantilevered into large-span continuous beams, and cast-in-place concrete is used between the beams to connect the beams into a whole joint, but the construction process is complicated and cumbersome

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