Prefabricated box-groove frp profile lightweight fiber sea sand concrete beam

Abstract

The invention relates to a fabricated box and slot type FRP sectional material light fiber sea sand concrete beam. A main body of a fabricated beam is constituted by an FRP hollow box and slot sectionbeam section in the middle and precast concrete filled beam sections at the two ends jointly; and the FRP hollow box and slot section beam section in the middle comprises a lower FRP box chamber andan upper FRP slot, an FRP corrugated plate is adopted as a box and slot partition plate between the lower hollow box chamber and the upper slot, and on-plate corrugations are adopted as anti-shear connecting keys between FRP and concrete. According to the main body of the fabricated beam, the self-weight of a beam body is reduced from the two aspects of material and structure, thus transporting isconvenient, the beam can be quickly and reliably connected with the plate and a column, construction is easy, convenient and rapid, good adaptability to the severe engineering environments, with serious corrosivity, such as coastal ports is achieved, and good social and economic benefits and engineering application prospects are achieved.

Description

technical field [0001] The invention relates to the field of engineering construction under harsh corrosive environments such as general environments and coasts and ports, and specifically refers to an assembled box-groove type FRP profile light fiber sea sand concrete beam. Background technique [0002] As the most widely used structural form today, reinforced concrete is widely used in various construction projects such as houses, bridges, roads, and dams. However, in recent years, the deterioration of structural performance caused by steel bar corrosion has become more and more prominent, which not only causes safety hazards, but also consumes a lot of manpower and financial resources for the repair and reinforcement of corroded reinforced concrete structures. In 2013, CCTV exposed that sea sand was used illegally in many real estate projects in Shenzhen. A large amount of chloride ions in the sea sand caused serious corrosion to steel bars, which caused cracks in floors ...

AI Technical Summary

Problems solved by technology

However, in recent years, the deterioration of structural performance caused by steel corrosion has become more and more prominent, which not only causes safety hazards, but also consumes a lot of manpower and financial resources for the repair and reinforcement of corroded reinforced concrete structures.

In 2013, CCTV exposed that sea sand was used illegally in many real estate projects in Shenzhen. A large amount of chloride ions in sea sand caused serious corrosion to steel bars, which led to cracks in floors and walls, and a large number of cracks appeared, causing serious safety hazards.

However, the pure FRP structure also has the disadvantages of large initial investment, low stiffness and low strength utilization rate, so there is an urgent need for an optimal combination of FRP materials and concrete materials to make full use of the tensile properties of FRP materials and the compression resistance of concrete materials. A new structure of performance to meet the demand

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