Ultra-high performance concrete composite beam bridge deck slab wet joint continuous structure with template

Abstract

The invention discloses an ultra-high performance concrete composite beam bridge deck slab wet joint continuous structure with a template, which comprises a prefabricated section, a wet joint sectionand a steel bottom template; the prefabricated section bridge deck slab is made of an ultra-high performance concrete material; the steel bottom template is an extension section of the prefabricated section bridge deck slab bottom template, butt welding is conducted in the middle of the wet joint, and the steel bottom template serves as a bottom template of the wet joint section; the wet joint section is supported on the steel bottom template and connected with the steel bottom template and the prefabricated section in a pouring mode, the wet joint section is laid continuously, the thickness of the wet joint section is equal to that of the bridge deck slab, and the wet joint section is made of ultra-high performance concrete materials the same as those of the bridge deck slab. The wet joint is provided with the template, is high in tensile strength and compressive strength and good in durability, can effectively guarantee the performance continuity of the ultra-high performance concrete at the wet joint interface, has the advantages of being effective in steel bar connection, convenient to construct and easy to maintain, and can solve the problem of the connection quality of the ultra-high performance concrete wet joint.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an ultra-high-performance concrete composite girder bridge deck wet joint continuous structure with its own formwork. Background technique [0002] In order to ensure the anchoring and hooping effect of steel bars and concrete, and to facilitate construction, the wet joint connection of ordinary concrete bridge decks of composite structure bridges usually uses the bridge deck to reserve ring steel bars at the wet joints, and passes through the wet joints inside and outside the wet joints. Add circular or straight steel bars for welding, and then pour concrete to complete the wet joint construction. [0003] Ultra-high performance concrete (UHPC) can effectively solve the problem of low tensile strength of ordinary concrete. At the same time, it has the advantages of thin slabs, light load, high durability, long service life, and low maintenance costs. Bridge decks for ...

AI Technical Summary

Problems solved by technology

Furthermore, the wet joints are located at the internodes of the diaphragm, and it is difficult to form the formwork, which makes it difficult to guarantee the quality of concrete pouring

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