Concrete beam reinforced with aluminum alloy ribs and preparation method thereof

Abstract

The invention relates to a concrete beam reinforced with aluminum alloy ribs and a preparation method thereof. The concrete beam comprises concrete, the stressed aluminum alloy ribs, the tensioned aluminum alloy ribs, the aluminum alloy hoop ribs and the aluminum alloy bent ribs, and the stressed aluminum alloy ribs, the tensioned aluminum alloy ribs, the aluminum alloy hoop ribs and the aluminum alloy bent ribs are arranged in the concrete. The multiple stressed aluminum alloy ribs and the multiple tensioned aluminum alloy ribs are parallel to one another and are fixed through the multiple aluminum alloy hoop ribs. The aluminum alloy bent ribs are of a flat bottom conical structure, the bottoms of the aluminum alloy bent ribs are located among the tensioned aluminum alloy ribs, and the ends and the bottoms of the aluminum alloy bent ribs are all fixed to the aluminum alloy hoop ribs. According to the concrete beam reinforced with the aluminum alloy ribs and the preparation method thereof, when the concrete beam is reinforced, the aluminum alloy ribs are used and subjected to surface treatment before reinforcing is conducted, accordingly, the bearing capacity of the concrete beam and the durability of a concrete component can be improved under the condition that the self weight of the concrete beam is almost not increased, the ductility of the concrete beam is improved, and the potential safety hazard of the concrete beam under an erosion environment is redcued.

Description

【Technical field】 [0001] The invention relates to the field of concrete buildings, in particular to a concrete beam reinforced with aluminum alloy bars and a preparation method thereof. 【Background technique】 [0002] Beams are the most basic load-bearing components in building structures. When the beam is working, due to the low tensile strength of the concrete, coupled with the influence of external environment temperature changes and construction and other factors, the concrete beam is in a working state with cracks most of the time. At present, most of the reinforcement materials of concrete beams are steel bars, but steel is easy to corrode, especially under corrosive environment conditions, the steel bars in traditional reinforced concrete beams will be corroded, which not only affects the service life of reinforced concrete beams and It is beautiful, which makes the reinforced concrete beams have certain safety hazards, which poses a major threat to people's lives an...

AI Technical Summary

Problems solved by technology

At present, most of the reinforcement materials of concrete beams are steel bars, but steel is easy to corrode, especially under corrosive environment conditions, the steel bars in traditional reinforced concrete beams will be corroded, which not only affects the service life of reinforced concrete beams and Beautiful, but also makes reinforced concrete beams have certain safety hazards, which pose a major threat to people's lives and property, and will increase economic losses with continuous maintenance in the later period

[0003] For the corrosion of steel bars, some existing prevention and protection methods, such as epoxy resin coating method, electrochemical protection method, etc., have their own defects and problems, some of which reduce the bonding force and durability of steel bars, Or the price is too high and the construction is too complicated. More importantly, these methods cannot fundamentally solve the problem of steel corrosion, and further maintenance is still required in the later stage

At present, the more advanced method is to use fiber reinforced composite material (FRP) as the reinforcement of concrete beams, but FRP bars are linear elastic materials, and the damage of FRP bar concrete beams under load is brittle failure, which has potential safety hazards in earthquake areas. , In addition, the price of most FRP bars is too high, so it cannot be widely used in large quantities

[0004] Aluminum alloys have good corrosion resistance, but no one uses aluminum alloys as stress bars nowadays. On the one hand, the existing aluminum alloy bars are all smooth round bars, which have poor bonding performance with concrete, which affects their work together. On the other hand, due to the small elastic modulus of aluminum alloy, when it is used as a stress tendon, it will cause large deflection and cracks in the beam. Excessive cracks will reduce the stiffness of the beam, further increase the deflection of the beam, and affect the normal performance of the concrete beam. use

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