Assembly type T beam for tensioning circular corrugated pipe hogging moment steel bundle on bridge floor

Abstract

The invention discloses an assembled T beam for tensioning a circular corrugated pipe hogging moment steel bundle on a bridge floor. The assembled T beam comprises a T beam web and a T beam flange plate which are connected with each other, an inner side circular corrugated pipe hogging moment steel bundle and an outer side circular corrugated pipe hogging moment steel bundle are arranged in the T-shaped beam flange plate, and the outer side circular corrugated pipe hogging moment steel bundle is located on the two sides of the inner side circular corrugated pipe hogging moment steel bundle; aninner side hogging moment steel bundle tensioning notch corresponding to the inner side circular corrugated pipe hogging moment steel bundle and an outer side hogging moment steel bundle tensioning notch corresponding to the outer side circular corrugated pipe hogging moment steel bundle are reserved in the top of the T-shaped beam flange plate; and an inner side hogging moment steel beam anchorage device connected with the inner side circular corrugated pipe hogging moment steel beam and an outer side hogging moment steel beam anchorage device connected with the outer side circular corrugated pipe hogging moment steel beam are pre-buried in the T-shaped beam flange plate. Compared with the prior art, the construction process is safer and more convenient, the defects of flat corrugated pipe prestressed steel beams are effectively overcome, the structure is simple, and prefabrication is convenient.

Description

technical field [0001] The invention belongs to the technical field of bridge construction engineering, and in particular relates to an assembled T-beam in which circular bellows negatively bent steel beams are stretched on the bridge deck. Background technique [0002] Prefabricated simply supported to continuous prestressed concrete T-beam has become the mainstream bridge type of small-span conventional bridges on highways due to its advantages of good overall mechanical performance, convenient and fast construction, high industrialization standards, easy quality control, low construction and post-maintenance costs, etc. . The prefabricated simply supported to continuous prestressed concrete T-beam is mainly composed of webs and wing plates, and the beams are connected by cast-in-place wet joints. Simply supported to continuous construction means that the simply supported beam structure is prefabricated in the factory, and after being installed on the pier, the wet joints...

AI Technical Summary

Problems solved by technology

Flat bellows have poor adaptability and cannot be used in small radius curved bridges

Moreover, the flat corrugated pipe is prone to leakage of grout to block the pipe, which affects the beam penetration, and it is difficult to ensure full grouting, which affects the durability of the structure

[0006] Third, the lower tooth block of the flange plate is set at the tension position of the negative bending moment steel beam of the T beam, which is a special-shaped structure, and it is inconvenient to make, install and dismantle the formwork during prefabrication

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