Novel TRC permanent formwork steel-concrete composite beam and preparation method thereof

Abstract

The invention discloses a novel TRC permanent formwork steel-concrete composite beam and preparation method thereof. The novel TRC permanent formwork steel-concrete composite beam is composed of high-performance fine aggregate concrete, fabric nets fixed by stainless steel plate net linings, a box-shaped steel beam, a steel reinforcement framework, cast-in-place concrete, side formwork cavities, an upper formwork cavity, protruding fillets, outer side plates, inner side plates and an inner transverse plate. A TRC formwork serves as a permanent formwork, no formwork needs to be additionally arranged, the construction process of formwork erecting and removing of the cast-in-place reinforced concrete structure is simplified, the construction efficiency is improved, the engineering cost is reduced, and the construction time is shortened; the hollow box-shaped steel beam is arranged at the lower part of the steel-concrete composite beam, so that materials are saved, the weight of the beam is light, and the tensile property of steel and the compression resistance of concrete are fully utilized; and the exterior of the box-shaped steel beam is protected by the compact TRC formwork, the chloride ion permeation resistance and the water permeation resistance are far superior to the chloride ion permeation resistance and the water permeation resistance of common concrete, corrosion of thesteel beam is effectively prevented, meanwhile, the fire resistance of the steel-concrete composite beam can be enhanced, and the durability of the structure is improved.

Description

technical field [0001] The invention relates to the technical field of composite beams, in particular to a novel TRC permanent formwork steel-concrete composite beam and a preparation method thereof. Background technique [0002] Formwork is an important tool in the construction of cast-in-place concrete structures. The technical performance of formwork directly affects the quality, cost and economic benefits of construction projects. According to statistics, in the construction of cast-in-place concrete structures, every 1m 2 Concrete engineering formwork consumption up to 4 ~ 5m 2 , its engineering cost accounts for 30% to 35% of the cost of cast-in-place concrete structures, labor consumption accounts for 40% to 50%, and about 50% of the construction period. The formwork project occupies a lot of cost and construction period, which is an important factor affecting the construction progress, cost and construction quality of the project. [0003] Steel-concrete composi...

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Problems solved by technology

[0005] Technical problem to be solved: In order to reduce the engineering amount of formwork, improve construction efficiency, overcome the problems of easy corrosion and poor fireproof performance of steel-concrete composite beams, and improve the durability of the structure, this application provides a new type of TRC permanent formwork steel- Concrete composite beam and its preparation method

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