Construction structure for textile reinforced composite reinforced bar concrete and manufacturing method thereof

Abstract

The invention belongs to the technical field of concrete reinforcement, relating to utilizing fiber mesh grids to enhance the concrete strength. The arrangement of structural reinforcing steel, the thickness of concrete protective layers of main stress ribs and the grade of the concrete strength of the invention are designed according to the design criterion of a reinforced concrete structure. The invention is characterized in that before the initial setting of the concrete, fine concrete and the fiber mesh grids are cast on the outer side of the stretched and drawn area of the structure or the external surface of a large-scale integral structure, the total thickness of the fiber mesh grids and the fine concrete ranges from 10mm to 20mm, concrete with equal thickness of external surfaces are replaced, and the fiber mesh grids are evenly distributed in the fine concrete. The grid type or the plate type structure of the invention can adopt the structure of replacing partial reinforcing steel with the fiber mesh grids. The invention can effectively control cracks and solve the problems of concrete cracking and reinforcing steel corrosion, and has the advantages of firm bonding of the boundary surfaces of the fine concrete and the concrete, light self weight, low production cost, corrosion resistance, safe and durable usage, etc.

Description

technical field [0001] The invention belongs to the technical field of concrete reinforcement, and relates to the reinforcement of concrete strength by using a fiber braided net. Background technique [0002] Traditional reinforced concrete structures often have severe main cracks in high stress areas, and harsh environmental conditions can further aggravate steel corrosion. In order to ensure that the steel bars are not corroded, a thicker protective layer thickness is required, which increases the self-weight of the structure. [0003] The research center supported by the German Research Federation (Deutsche Forschungsgemeinschaft) has been conducting research on fiber-woven mesh reinforced concrete (Textile Reinforced Concrete, referred to as TRC) since 1999. TRC is a new type of fiber-reinforced cement-based composite material. The combination of mesh and fine concrete, fiber woven mesh is mainly woven with fibers such as carbon fiber, aramid fiber, and alkali-resistant...

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned prior art studies the TRC material and its repairing and strengthening effect on building structures, but since the TRC is made of fine concrete, the maximum particle size of the aggregate is less than 4mm, and the fibers and fine concrete have brittle characteristics, so that the TRC can reach There is no obvious sign of ultimate load, unlike reinforced concrete structures that have obvious plastic development stages, and there are obvious signs of damage, so for safety reasons, components made of TRC cannot be used for main load-bearing components, such as large bridges , the load-bearing body of building structures, the load-bearing parts of large-volume concrete buildings such as offshore platforms, port engineering, and marine engineering

However, the use of TRC to repair and reinforce the existing structure cannot fundamentally change the form of the structure, and to a certain extent increases the weight of the structure

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