Hollow double-layer FRP pipe concrete combination structure

Abstract

The invention relates to the concrete composite structure of a hollow double-deck FRP pipe, which is characterized in that the composite structure comprises an outer FRP pipe used as a lateral wall, an FRP barrel used as an inside wall and a steel and concrete composite layer or a concrete layer which is used as a fixed connector between the outer FRP pipe and the FRP barrel. The invention has good structural mechanical performance and earthquake resistance, which reduces the sole weight of the structure and strengthens the bending rigidity of the structure, thereby resulting in the convenient convey of the components and quick construction and installation; the invention is applicable to strengthen the modification works and in particular to be applied to the poles and bracing members of buildings, bridges and special structures in severe environment such as ocean, marsh, alkaline land, etc.

Description

technical field

[0001] The invention relates to a pipe structure, more specifically a pipe structure applied in the technical field of structural engineering, which can be used for reinforcement and transformation projects, and is especially suitable for buildings, bridges and special structures in harsh environments such as ocean, wet and saline-alkali land. Background technique

[0002] FRP pipe refers to the tubular profile formed by fiber reinforced composite (FRP) through pultrusion, molding and winding production processes, which can be used in the field of structural engineering. At present, in actual engineering, concrete-filled steel tube structures and fiber-reinforced plastic FRP-confined concrete structures are widely used. The main forms include pouring concrete in steel tubes, or filling concrete in FRP tubes, or wrapping concrete with FRP cloth to form a solid section load-bearing column. In practical engineering, solid steel p...

Examples

Embodiment Construction

[0016] Referring to Fig. 1, the hollow pipe column is composed of an FRP outer tube 1 as the outer wall, an FRP core tube 3 as the inner wall, and a concrete layer or a reinforced concrete layer 2 consolidated between the FRP outer tube 1 and the FRP inner tube 3.

[0017] In a specific implementation, the cross-sectional form of the combined structure is any combination between the circular, square or rectangular FRP outer tube 1 and the circular, square or rectangular FRP core tube 3 . include:

[0018] Circular double-layer FRP tube concrete structure with circular sleeve shown in Fig. 1;

[0019] The circular sleeve square double-layer FRP pipe concrete structure shown in Fig. 2;

[0020] The circular sleeve rectangular double-layer FRP pipe concrete structure shown in Fig. 3;

[0021] The square sleeve circular double-layer FRP pipe concrete structure shown in Fig. 4;

[0022] The square sleeve square double-layer FRP pipe concrete structure shown in Figure 5;

[0023...

technical field

[0001] The invention relates to a pipe structure, more specifically a pipe structure applied in the technical field of structural engineering, which can be used for reinforcement and transformation projects, and is especially suitable for buildings, bridges and special structures in harsh environments such as ocean, wet and saline-alkali land. Background technique

[0002] FRP pipe refers to the tubular profile formed by fiber reinforced composite (FRP) through pultrusion, molding and winding production processes, which can be used in the field of structural engineering. At present, in actual engineering, concrete-filled steel tube structures and fiber-reinforced plastic FRP-confined concrete structures are widely used. The main forms include pouring concrete in steel tubes, or filling concrete in FRP tubes, or wrapping concrete with FRP cloth to form a solid section load-bearing column. In practical engineering, solid steel p...

Examples

Embodiment Construction

[0016] Referring to Fig. 1, the hollow pipe column is composed of an FRP outer tube 1 as the outer wall, an FRP core tube 3 as the inner wall, and a concrete layer or a reinforced concrete layer 2 consolidated between the FRP outer tube 1 and the FRP inner tube 3.

[0017] In a specific implementation, the cross-sectional form of the combined structure is any combination between the circular, square or rectangular FRP outer tube 1 and the circular, square or rectangular FRP core tube 3 . include:

[0018] Circular double-layer FRP tube concrete structure with circular sleeve shown in Fig. 1;

[0019] The circular sleeve square double-layer FRP pipe concrete structure shown in Fig. 2;

[0020] The circular sleeve rectangular double-layer FRP pipe concrete structure shown in Fig. 3;

[0021] The square sleeve circular double-layer FRP pipe concrete structure shown in Fig. 4;

[0022] The square sleeve square double-layer FRP pipe concrete structure shown in Figure 5;

[0023...

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