Polyvinyl chloride (PVC) pipe reinforced concrete and steel pipe concrete laminated member

Abstract

The invention relates to a polyvinyl chloride (PVC) pipe reinforced concrete and steel pipe concrete laminated member which belongs to a civil engineering member. A PVC pipe is adopted in an outer layer of the member, a steel pipe is adopted in an inner layer, concrete is filled in the inner steel pipe, reinforced concrete is filled between the outer PVC pipe and the inner steel pipe, end faces of the outer PVC pipe reinforced concrete and the inner steel pipe concrete are level, and geometric centers of sections of the outer PVC pipe and the inner steel pipe are coincide. The outer PVC pipe and the inner steel pipe respectively adopt section forms of circle, square, rectangle, polygon, round end, ellipse and the like. The member has the advantages of common steel pipe concrete laminated members, can improve the bearing capacity and the corrosion resistance while increasing small dead weight, and can be applied to large-diameter pillars in bridge piers and buildings and other related towering structures or pillar members.

Description

technical field [0001] The invention relates to a civil engineering component, in particular to a PVC pipe reinforced concrete-steel tube concrete composite component. Background technique [0002] Conventional steel pipe concrete composite members are composed of steel pipe concrete in the middle of the section and reinforced concrete outside the steel pipe; this type of structure can effectively improve the bearing capacity, ductility and fire resistance of the member, and reduce the cross-sectional size of the member; it has begun It is used in some multi-story and high-rise buildings. However, the outer layer of the component is reinforced concrete, and the corrosion resistance of the component is a major problem. When the reinforced concrete is placed in the air or humid environment for a long time, carbonization and alkali-aggregate reaction will occur, resulting in corrosion of steel bars and steel pipes. Contents of the invention [0003] The purpose of the presen...

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Problems solved by technology

However, the outer layer of the component is reinforced concrete, and the corrosion resistance of the component is a major problem. When the reinforced concrete is placed in the air or humid environment for a long time, carbonization and alkali-aggregate reaction will occur, resulting in corrosion of steel bars and steel pipes.

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