A prefabricated steel pipe concrete column

Abstract

The utility model discloses a prefabricated steel pipe shaped steel concrete column belongs to the technical field of fabricated building, including shaped steel steel skeleton, the shaped steel steel skeleton is equipped with at least two parallel and side fixed connection's steel pipe, and the steel pipe lumen fills concrete pipe core, the periphery of shaped steel steel skeleton is surrounded with a reinforced concrete layer who is equipped with steel mesh, the shaped steel steel skeleton includes two parallel fixed connection's rectangular steel pipe, and the cross section of shaped steel steel skeleton formed is sunge -like. The prefabricated steel pipe shaped steel concrete column provided by the utility model has high structural bearing capacity, light prefabricated weight, convenient transportation and installation and high industrialization degree, and vertical operation on site is changed to factory prefabricated production, greatly improves the labor safety of staff, saves support formwork in preparation and construction process, and has higher economic benefit.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, specifically relating to a prefabricated steel pipe steel-concrete column. Background Technology

[0002] Currently, in the traditional prefabricated building sector, two main methods are generally employed: prefabrication of whole components and prefabrication of composite components. The industrialization of the entire process of prefabrication, transportation, and installation of giant prefabricated components remains a difficult technical challenge. The size and weight of these components significantly impact the overall structural cost and the promotion and application of new building industrialization technologies. Fully prefabricated building engineering technology has always been a long-term goal in the prefabricated building field. Some components with large cross-sectional dimensions and complex structures remain a pressing technical challenge for the industry, directly affecting the promotion of prefabricated buildings and the total construction cost. Traditional design methods and structures typically utilize cast-in-place construction, resulting in low industrialization levels, poor component precision, and extremely high labor and construction costs. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a precast steel tube steel-concrete column with high structural bearing capacity, light precast weight, convenient transportation and installation, and high degree of industrialization.

[0004] To achieve the above objectives, this utility model employs the following technical solution: This utility model provides a precast steel pipe steel-concrete column, including a steel frame, wherein at least two parallel and fixedly connected steel pipes are arranged in the steel frame, and the steel pipe cavity is filled with a concrete core. The steel frame is circumferentially wrapped with a reinforced concrete layer equipped with a steel mesh.

[0005] Furthermore, the steel frame comprises two parallel and fixedly connected rectangular steel pipes, and the cross-section of the steel frame is grid-shaped.

[0006] Furthermore, the rectangular steel pipe is provided with several connectors and / or reinforcing members on its four sides.

[0007] Furthermore, several reinforcing members are provided on the four sides of the steel pipe. The reinforcing members protrude from the outer surface of the steel pipe and extend into the reinforced concrete layer to enhance the structural connection stability between the steel frame 1 and the reinforced concrete layer. The reinforcing member between the two opposing sides of the steel pipes is fixed by welding and corresponding one-to-one, forming a gap between the two opposing sides of the steel pipes. At least two transverse or longitudinal reinforcing bars are inserted into the gap, and concrete is poured into the gap.

[0008] Furthermore, a plurality of connectors are provided between the two steel pipes along the longitudinal extension direction of the butt joint. The connectors span the butt joint between the steel pipes and are welded and fixed at both ends to the steel pipes on both sides.

[0009] Furthermore, the steel pipes of the steel frame are connected by welding.

[0010] Furthermore, the concrete core filling the cavity of the steel pipe is made of plain concrete.

[0011] Furthermore, the steel mesh configured in the reinforced concrete layer includes several transverse steel bars and longitudinal steel bars; The transverse reinforcing bars are arranged in a ring or loop around the steel frame and are evenly spaced along the longitudinal extension direction of the steel frame. The longitudinal reinforcing bars are evenly spaced around the circumference of the steel frame and are fixedly connected to the transverse reinforcing bars along the longitudinal extension direction of the steel frame.

[0012] Furthermore, the steel pipes of the steel frame are rectangular or circular steel pipes.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: The precast steel-concrete composite column provided by this utility model adopts a reinforced concrete layer, a steel frame and a concrete core arranged sequentially from the outside to the inside, and at least two parallel and fixedly connected steel pipes are arranged in the steel frame. The reinforced concrete layer is surrounded by a cage-like steel mesh, and the steel pipes of the steel frame are filled with concrete cores, forming a precast steel-concrete composite column with high structural bearing capacity and light precast weight. It can be prefabricated, is lightweight, convenient to transport and install, and is suitable for industrial applications. Attached Figure Description

[0014] Figure 1 This is a top view of a precast steel-tube steel-concrete column according to an embodiment of the present utility model.

[0015] Figure 2 This is a cross-sectional view of a precast steel-tube steel-concrete column according to an embodiment of the present utility model.

[0016] In the diagram: 1. Steel frame; 2. Steel pipe; 3. Concrete core; 4. Reinforced concrete layer; 5. Horizontal reinforcement; 6. Longitudinal reinforcement. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a precast steel pipe 2-type steel concrete column, including a steel frame 1, wherein at least two parallel and fixedly connected steel pipes 2 are arranged in the steel frame 1, and the cavity of the steel pipe 2 is filled with a concrete core 3, and a reinforced concrete layer 4 with a steel mesh is wrapped around the steel frame 1 in the circumferential direction.

[0021] In some embodiments, the steel pipe 2 of the steel frame 1 adopts a regular or irregular shape structure, preferably a rectangular steel pipe 2 or a circular steel pipe 2. The cavity of the steel pipe 2 can also be designed as a hollow pipe with a circular or rectangular cross-section, and it matches the concrete core 3 filled inside the cavity of the steel pipe 2. The concrete core 3 filled inside the cavity of the steel pipe 2 is made of plain concrete.

[0022] The steel frame 1 can use two or more steel pipes 2, which are parallel to each other and fixedly connected side by side along one, two or more rows. The sides of adjacent steel pipes 2 that are connected or opposite each other are welded together to form double or multiple sections of steel frame.

[0023] For example, the shaped steel steel skeleton 1 comprises two rectangular steel pipes 2 fixedly connected in parallel, and the cross-section of the formed shaped steel steel skeleton 1 is in a "日"-shaped grid. Alternatively, the shaped steel steel skeleton 1 comprises four rectangular steel pipes 2 arranged in parallel and fixedly connected in two rows, and the cross-section of the formed shaped steel steel skeleton 1 is in a "田"-shaped grid. In addition, according to actual application scenarios, the shaped steel steel skeleton 1 can also be formed into various forms such as L-shape or convex shape.

[0024] In some embodiments, the steel mesh arranged in the reinforced concrete layer 4 is in a long cage structure, and comprises a plurality of transverse steel bars 5 and longitudinal steel bars 6. Wherein, the transverse steel bars 5 can adopt various forms such as annular steel bars, stirrups and spiral stirrups, and can be ordinary steel bars or reinforcing bars.

[0025] The transverse steel bars 5 are annularly sleeved on the shaped steel steel skeleton 1 and arranged at uniform intervals along the longitudinal extension direction of the shaped steel steel skeleton 1, and the longitudinal steel bars 6 are arranged at uniform intervals along the circumferential direction around the shaped steel steel skeleton 1 and are fixedly connected with the transverse steel bars 5 along the longitudinal extension direction of the shaped steel steel skeleton 1.

[0026] Wherein, the longitudinal spacing distance between the transverse steel bars 5 and the circumferential spacing distance between the longitudinal steel bars 6 are both selected within a reasonable numerical range according to actual design and application.

[0027] In some embodiments, a plurality of connecting pieces and / or reinforcing pieces are arranged on the steel pipe 2.

[0028] For example, the connecting pieces can be short steel bar segments, including straight bars, bars with hooks, upsetting ends, etc., can also be shear studs, shear nails, small-sized angle steel or short legs of flat steel, and can also be plate ribs, including various shapes and structures such as L-shaped and T-shaped short ribs stamped from steel plates. The reinforcing pieces can be flat steel strips, small angle steels, steel plates, channel steels, steel bar segments (single row or double row), etc., with flat steel or angle steel being preferred.

[0029] A plurality of reinforcing pieces are arranged on the peripheral side surfaces of the steel pipe 2, the reinforcing pieces protrude from the outer surface of the steel pipe 2 and extend into the reinforced concrete layer 4, so as to enhance the structural connection stability between the shaped steel steel skeleton 1 and the reinforced concrete layer 4, and improve the structural properties such as shear resistance.

[0030] The spacing of the reinforcing pieces is 150~300mm, and the spacing of the connecting pieces in the longitudinal direction is 500~1000mm, which needs to avoid the position where the main reinforcement of the steel mesh passes through.

[0031] In some embodiments, the reinforcing pieces between the oppositely butted side surfaces of two steel pipes 2 are fixed by welding in one-to-one correspondence, so as to fixedly connect the two steel pipes 2 together and form a gap between the oppositely butted side surfaces of the two steel pipes 2. At least two steel bars in the steel mesh are arranged to pass through the gap, and concrete is poured and filled in the gap.

[0032] Specifically, a 20-40mm gap is reserved between two adjacent steel pipes to allow the reinforcing bars to pass through and to pour non-shrink fine aggregate concrete or grout.

[0033] In some embodiments, a plurality of connectors are provided between the two steel pipes 2 along the longitudinal extension direction of the butt joint. The connectors span the butt joint of the steel pipes 2 and are welded and fixed at both ends to the steel pipes 2 on both sides, thereby fixing the two steel pipes 2 together.

[0034] Next, the preparation of the precast steel pipe type 2 steel-concrete column of this application will be described in terms of structure and principle with reference to specific embodiments.

[0035] First, align the two rectangular steel pipes 2 face to face and weld them together to form a grid-shaped steel frame 1. Then, weld several connectors and reinforcing parts onto the steel frame 1.

[0036] Next, the steel frame 1 is placed into a pre-made mold, and longitudinal steel bars 6 and transverse steel bars 5 are tied between the mold and the steel frame 1 according to the design to form a steel mesh.

[0037] Furthermore, concrete is poured into the mold, cured, and then the mold is removed.

[0038] Finally, plain concrete is used to fill the cavity of steel pipe 2 to form concrete core 3, and finally a precast steel pipe 2 steel-concrete column is formed.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A precast steel-tube reinforced concrete column, characterized in that, The steel frame includes a steel profile, in which at least two parallel and fixedly connected steel pipes are arranged, and the cavities of the steel pipes are filled with concrete cores. The steel frame is surrounded by a reinforced concrete layer with a steel mesh. The steel frame includes two parallel and fixedly connected rectangular steel pipes, and the cross-section of the steel frame is grid-shaped. The steel mesh configured in the reinforced concrete layer includes several transverse steel bars and longitudinal steel bars; the transverse steel bars are arranged in a ring or loop around the steel frame and are evenly spaced along the longitudinal extension direction of the steel frame; the longitudinal steel bars are evenly spaced around the circumference of the steel frame and are fixedly connected to the transverse steel bars along the longitudinal extension direction of the steel frame. Several reinforcing members are provided on the four sides of the steel pipe. The reinforcing members protrude from the outer surface of the steel pipe and extend into the reinforced concrete layer to enhance the structural connection stability between the steel frame and the reinforced concrete layer. The reinforcing member between the two opposing sides of the steel pipes is fixed by welding and corresponding one-to-one, forming a gap between the two opposing sides of the steel pipes. At least two transverse or longitudinal reinforcing bars are inserted into the gap, and concrete is poured into the gap.

2. The precast steel-tube reinforced concrete column according to claim 1, characterized in that, Several connectors are provided between the two steel pipes along the longitudinal extension direction of the butt joint. The connectors span the butt joint between the steel pipes and are welded and fixed at both ends to the steel pipes on both sides.

3. The precast steel-tube reinforced concrete column according to claim 2, characterized in that, The steel pipes of the steel frame are connected by welding.

4. The precast steel-tube reinforced concrete column according to claim 3, characterized in that, The concrete core inside the steel pipe is made of plain concrete.

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