Prefabricated T beam and construction method

Abstract

The invention discloses a prefabricated T beam and a construction method. The prefabricated T beam comprises bridge panels, a longitudinal beam and a steel transverse partition plate. The bridge panels and the longitudinal beam are prefabricated parts. The adjacent bridge panels are connected in an embedded mode. The portions, at the upper end of the longitudinal beam, of the bridge panels are evenly provided with preformed holes. Pre-buried deformed steel bars are arranged inside a bridge beam of the longitudinal beam. A pre-buried steel plate is arranged on the side face of the longitudinal beam. The pre-buried deformed steel bars need to stretch out of the upper edges of the spliced bridge panels on the basis of the length. The steel transverse partition plate is fixedly connected with the pre-buried steel plate on the longitudinal beam. The construction method comprises the steps of prefabricating the bridge panels and the longitudinal beam; connecting the steel transverse partition plate with the longitudinal beam after the longitudinal beam is suspended to a bridge pier and abutment; placing the bridge panels on the longitudinal beam, and connecting the adjacent bridge panels in the embedded mode; pouring epoxy mortar concrete into the preformed holes. The bridge panels and the longitudinal beam of the T beam are partially prefabricated separately, and therefore the wet joint problem existing in concrete T beam splicing is effectively solved.

Description

technical field [0001] The invention relates to the technical field of highway bridges, and more specifically, to a novel prefabricated T-beam and a construction method. Background technique [0002] T-beam is a superstructure form often used in highway prefabricated bridges. Compared with the two commonly used fabricated prefabricated structures such as hollow slabs and small box girders, T-beams have the highest section efficiency index and the largest economic span; The "construction" method combines the batch prefabrication production of simply supported beams with the superior performance of continuous beams, realizes batch prefabrication production to speed up the construction of continuous beams, reduces construction difficulty, ensures construction quality, speeds up construction progress, and reduces project cost. [0003] However, there are still some deficiencies in the construction and use of the existing prefabricated T-beams: [0004] 1. The wet joints are g...

AI Technical Summary

Problems solved by technology

By prefabricating the bridge deck and longitudinal beams of the T-beam separately, it solves the problem of the high requirements for the transport and construction equipment of the concrete T-beam, the difficulty in guaranteeing the construction quality due to the small wet joint work surface, and the post-cast concrete at the wet joint due to different ages. Shrinkage and creep, poor internal force, and wet joint disease during post-operation, etc., to facilitate transportation and installation, reduce construction difficulty, reduce construction period, improve construction quality, and enhance bridge durability

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