A steel tube concrete column composite node and construction method thereof

Abstract

The present invention discloses a novel steel tube concrete column composite node and a construction method thereof, comprising a vertically arranged upper steel tube column and a lower steel tube column, and a plurality of U-shaped steel beams, a slot is provided on the side wall of the lower steel tube column, the slot extends downward from the upper end of the lower steel tube column, and a connecting end is formed on both sides thereof, one end of the steel beam passes through the slot and extends into the lower steel tube column, and is connected to a vertically arranged end plate, and both sides of the end plate are fixedly connected to the connecting ends on both sides of the slot; the upper steel tube column is located above the lower steel tube column, and its lower end is fixedly connected to the upper end of the upper steel tube column; at the same time, the upper steel tube column is fixedly connected to the end plate. The present invention utilizes the end plate to reinforce the node of the steel tube column and the steel beam from the inside, and arranges a reinforcing member at the node for further reinforcement, so that the appearance of the connection between the steel tube column and the steel beam is smooth, and no unnecessary decorative construction is required; at the same time, the reinforcing member has a better reinforcement effect on the node, and the node is more secure.

Description

Technical Field

[0001] The present invention relates to the technical field of assembled building structures, and in particular to a steel tube concrete column combined node and a construction method thereof. Background Art

[0002] Building industrialization has always been the development direction advocated by my country and is the fundamental way to develop prefabricated buildings. With the advancement of construction technology and the rapid development of information technology, it has become possible to truly realize the industrialization of construction. Prefabricated buildings are buildings built using new industrialized construction methods. Prefabricated buildings can be divided into three categories according to their material forms: prefabricated precast concrete structures, prefabricated steel structures, and prefabricated wood structures. At present, my country is vigorously promoting the development of steel structure prefabricated houses, and different structural forms and new nodes have also been produced during the promotion process.

[0003] In the prior art, at the connection node between the steel pipe column and the steel beam, a partition or ring plate is usually welded inside and outside the column, and then at the construction site, it is connected to the steel beam by pre-welding a short beam or steel corbel on the column. When connecting with the steel beam, a connecting plate and bolts are usually used for temporary fixation before welding. When the processing accuracy is insufficient or the construction error is large, it is difficult to install the bolts smoothly, which undoubtedly increases the difficulty of construction. In addition, this construction method will make subsequent welding operations difficult. Due to the high requirements for the welds of the steel beam, the manual operation technology has a greater impact on the construction quality. In addition, the prior art generally uses internal partitions or external ring plates to reinforce the nodes. These two methods also have problems. If the internal partition is used, it is not conducive to the pouring of concrete in the steel pipe column, but the use of the external ring plate will affect the flatness of the steel column, which restricts the development of the steel structure housing industry. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a steel tube concrete column combined node to solve the problems in the prior art that short beams or steel corbels are used to connect the steel tube column and the steel beam at the node, the reinforcement components are located outside the node and affect the appearance, and the manual operation technology has a great influence on the construction quality.

[0005] The invention also provides a construction method for a steel tube concrete combined node.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A steel tube concrete column composite node comprises a vertically arranged upper steel tube column and a lower steel tube column, and a plurality of U-shaped steel beams. A slot is provided on the side wall of the lower steel tube column, and the slot extends downward from the upper end of the lower steel tube column, and a connecting end is formed on each of its two sides. One end of the steel beam passes through the slot and extends into the lower steel tube column, and is connected to a vertically arranged end plate, and the two sides of the end plate are fixedly connected to the connecting ends on both sides of the slot; the upper steel tube column is located above the lower steel tube column, and the lower end thereof is fixedly connected to the upper end of the upper steel tube column; at the same time, the upper steel tube column is fixedly connected to the end plate.

[0008] The present invention sets a slot on the lower steel pipe column, sets an end plate at the connection between the steel beam and the steel pipe column, reinforces the connection between the steel beam and the steel pipe column by the end plate, and also sets the end plate inside the steel pipe column to keep the outer side of the node between the steel beam and the steel pipe column flat. After the assembly is completed, no extra decorative construction is required. At the same time, the end plate has a better effect of reinforcing the node from the inside of the steel pipe column, and the safety performance of the node is higher. In actual production, the present invention can adopt various components used in standardized mass production, and assemble the steel beam, steel pipe column and various components in the factory. On the one hand, it can ensure the installation quality, and on the other hand, it can improve the construction efficiency and make the production process and installation process convenient.

[0009] Preferably, the two side edges of the end plate are bent and extended toward the inner side of the lower steel pipe column to form a side plate, so that the cross section of the end plate is U-shaped. The end plate is fixedly connected to the connecting end of the lower steel pipe column and is also fixedly connected to the steel beam, which plays a reinforcing role in the connection between the lower steel pipe column and the steel beam, making the node more stable and safer.

[0010] Preferably, a reinforcing member is provided on the side where the end plate is connected to the steel beam, the reinforcing member is located inside the steel beam, and its outer side wall is fixedly connected to the inner side wall of the steel beam. The reinforcing member strengthens the connection between the steel beam and the end plate, further improving the stability of the connection between the steel beam and the end plate.

[0011] Preferably, the edges of the two side plates on the end plate are bent and extended in opposite directions to form bent edges.

[0012] Preferably, a plurality of anchoring steel bars are further provided in the end plate. The anchoring steel bars are arranged in a direction perpendicular to the length of the end plate, and two ends thereof respectively pass through the two side walls of the end plate and are fixedly connected thereto.

[0013] Preferably, a plurality of tie bars are provided between the two end plates disposed opposite to each other. The tie bars are located above the steel beam, and both ends of the tie bars pass through the upper sides of the two end plates disposed opposite to each other, respectively.

[0014] Preferably, a fixed end is provided at the lower end of the upper steel pipe column and at a position corresponding to the slot, and the fixed end extends into the slot and is connected with the slot; the inner side wall of the fixed end is fixedly connected to the side where the end plate and the steel beam are connected.

[0015] A construction method for a steel tube concrete column composite node comprises the following steps: when manufacturing the composite node, firstly, a rectangular slot is opened at the top of the side wall of a lower steel tube column in a factory, and an end plate is welded to a U-shaped steel beam; at a construction site, a U-shaped steel beam with an end plate is passed from top to bottom through the rectangular slot and fixed; the upper steel tube column is located above the lower steel tube column, and its lower end is fixedly connected to the upper end of the upper steel tube column; at the same time, the upper steel tube column is fixedly connected to the end plate by welding.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention utilizes end plates to reinforce the nodes of steel pipe columns and steel beams from the inside, and sets reinforcing members at the nodes for further reinforcement, so that the appearance of the connection between the steel pipe columns and the steel beams is smooth, and no unnecessary decorative construction is required; at the same time, the reinforcing members have a better reinforcement effect on the nodes, and the nodes are safer.

[0018] 2. The steel pipe-concrete composite node adopted in the present invention is easy to install on site and does not require temporary fixation. The steel beam can be directly placed on the steel pipe column for welding construction, which reduces the difficulty of welding operation and saves construction costs. It has the advantages of industrialized production and rapid construction, and will not affect the subsequent pouring of concrete.

[0019] 3. The present invention adopts a standardized component inner sleeve process. The components, steel pipe columns and steel beams used can be installed in the factory. The production process and installation process are convenient, which provides a new idea for the development direction of prefabricated buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a structural schematic diagram of a steel tube concrete column composite node.

[0021] Figure 2 This is a structural diagram of the connection between the end plate and the steel beam.

[0022] Figure 3 It is a structural schematic diagram of an implementation mode of the present invention.

[0023] Figure 4 Schematic diagram of the structure connecting the end plate, reinforcement member and steel beam.

[0024] Figure 5 It is a structural schematic diagram of another embodiment of the present invention.

[0025] Figure 6Schematic diagram of the structure connecting the end plate, anchor bars and steel beams.

[0026] In the figure: upper steel pipe column 1, lower steel pipe column 2, steel beam 3, slot 4, connecting end 5, end plate 6, reinforcing member 7, anchor steel bar 8, tie steel bar 9, fixed end 10, bent edge 11, upper flange 12. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] A composite joint of steel tube concrete column, see Figure 1 , including a vertically arranged upper steel pipe column 1 and a lower steel pipe column 2, and a plurality of U-shaped steel beams 3, the upper side edges of the two side walls of the steel beams are bent and extended in the directions to form upper flanges 12, a slot 4 is provided on the side wall of the lower steel pipe column, the slot extends downward from the upper end of the lower steel pipe column, and a connecting end 5 is formed on each of its two sides, one end of the steel beam passes through the slot and extends into the lower steel pipe column, and is connected to a vertically arranged end plate 6, the two sides of the end plate are fixedly connected to the connecting ends on both sides of the slot; the upper steel pipe column is located above the lower steel pipe column, and its lower end is fixedly connected to the upper end of the upper steel pipe column; at the same time, the upper steel pipe column is fixedly connected to the end plate.

[0029] In the specific implementation, the two side edges of the end plate are bent and extended toward the inner side of the lower steel pipe column to form a side plate, so that the cross section of the end plate is U-shaped. Figure 2 , 4 6 are schematic diagrams of end plate structures with different structures. The end plates can be implemented in a variety of ways. The edges of the two side plates on the end plate are bent in opposite or opposite directions and extended to form bent edges 11. In actual use, the edges of the two side plates on the end plate can be bent to form bent edges, or they can remain as they are without being bent. Regardless of whether the edges of the two side plates on the end plate are bent in opposite or opposite directions, the bent edges of the two adjacent end plates do not interfere with each other. After the concrete is poured in the upper and lower steel pipe columns, the bent edges can make the end plate contact with the concrete more fully and have better connectivity. A fixed end 10 is also provided at the lower end of the upper steel pipe column and at the position corresponding to the slot. The fixed end extends into the slot and is connected to the slot in cooperation; the inner side wall of the fixed end is fixedly connected to the side where the end plate and the steel beam are connected.

[0030] In one embodiment, see Figure 1 and 2 A plurality of tie bars 9 are provided between the two end plates facing each other. The tie bars are located above the steel beam, and both ends thereof pass through the upper sides of the two end plates facing each other. The tie bars can make the force transmission clearer.

[0031] In one embodiment, see Figure 3and 4 A reinforcing member 7 is also provided on the side where the end plate is connected to the steel beam. The reinforcing member is located inside the steel beam, and its outer side wall is fixedly connected to the inner side wall of the steel beam. The reinforcing member further reinforces the connection between the steel beam and the end plate, thereby improving the stability and strength of the connection point between the two.

[0032] In another embodiment, see Figure 5 and 6 In the end plate, a plurality of anchoring steel bars 8 are arranged perpendicular to the length direction of the end plate, and the two ends of the anchoring steel bars respectively pass through the two side walls of the end plate and are fixedly connected thereto. The anchoring steel bars in two adjacent end plates do not interfere with each other and will not affect other components. The anchoring steel bars can improve the integrity of the end plate and make it more stable. In actual production, after the end plate is manufactured, the anchoring steel bars can be arranged on the end plate.

[0033] A construction method for a steel tube concrete column composite node comprises the following steps: when manufacturing the composite node, firstly, a rectangular slot is opened at the top of the side wall of a lower steel tube column in a factory, and an end plate is welded to a U-shaped steel beam; at a construction site, a U-shaped steel beam with an end plate is passed from top to bottom through the rectangular slot and fixed; the upper steel tube column is located above the lower steel tube column, and its lower end is fixedly connected to the upper end of the upper steel tube column; at the same time, the upper steel tube column is fixedly connected to the end plate by welding.

[0034] In the actual construction process, tie bars, reinforcement members and anchor bars can be used together. Figure 3 and 4 , the combination of tie bars and reinforcement members improves the integrity of the end plate and also enhances the safety of the node. Tie bars can also be used in conjunction with anchor bars, see Figure 5 and 6 , wherein the tie steel bars and the anchor steel bars can be arranged on the end plate at the same time, and the tie steel bars are located at the upper end of the end plate, that is, at one end inside the upper steel pipe column or at one end close to the upper steel pipe column, and will not interfere with the anchor steel bars. In the above-mentioned combination implementations, the reinforcing member can be used in conjunction with the anchor steel bars and the tie steel bars to improve the integrity of the end plate and enhance the safety of the node. When making the node, the lower steel pipe column is first grooved in the factory, and a groove matching the shape of the steel beam is opened at the top of the side wall of the lower steel pipe column, and the end plate is connected to one end of the steel beam by welding. At the construction site, the U-shaped steel beam with the end plate is passed through the groove on the lower steel pipe column from top to bottom and welded and fixed, and then the upper steel pipe column and the lower steel pipe column are fixedly connected.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. A steel tube concrete column composite node, comprising an upper steel tube column (1) and a lower steel tube column (2) arranged vertically, and a plurality of U-shaped steel beams (3), characterized in that: A slot (4) is provided on the side wall of the lower steel pipe column. The slot extends downward from the upper end of the lower steel pipe column. A connecting end (5) is formed on both sides of the slot. One end of the steel beam passes through the slot and extends into the lower steel pipe column, and is connected to a vertically arranged end plate (6). Both sides of the end plate are fixedly connected to the connecting ends on both sides of the slot. The upper steel pipe column is located above the lower steel pipe column, and its lower end is fixedly connected to the upper end of the lower steel pipe column. At the same time, the upper steel pipe column is fixedly connected to the end plate. The two side edges of the end plate are bent and extended toward the inner side of the lower steel pipe column to form a side plate, so that the cross section of the end plate is U-shaped; A reinforcing member (7) is also provided on the side where the end plate is connected to the steel beam, the reinforcing member is located inside the steel beam, and the outer side wall thereof is fixedly connected to the inner side wall of the steel beam; The edges of the two side plates on the end plate are bent and extended in opposite directions to form bent edges (11), and the bent edges of two adjacent end plates do not interfere with each other; A plurality of anchoring steel bars (8) are also provided in the end plate. The anchoring steel bars are arranged in a direction perpendicular to the length of the end plate, and two ends of the anchoring steel bars respectively pass through the two side walls of the end plate and are fixedly connected thereto; A plurality of tie steel bars (9) are also provided between the two end plates arranged opposite to each other. The tie steel bars are located above the steel beam, and both ends of the tie steel bars respectively pass through the upper sides of the two end plates arranged opposite to each other.

2. The steel tube concrete column composite node according to claim 1, characterized in that: A fixed end (10) is also provided at the lower end of the upper steel pipe column and at a position corresponding to the slot, the fixed end extends into the slot and is connected to the slot in a matching manner; the inner side wall of the fixed end is fixedly connected to the side where the end plate and the steel beam are connected.

3. A construction method for a steel tube concrete column composite node as claimed in any one of claims 1 to 2, characterized in that: The method comprises the following steps: when manufacturing the combined node, firstly, a rectangular groove is opened at the top of the side wall of the lower steel pipe column in the factory, and the end plate is welded to the U-shaped steel beam; at the construction site, the U-shaped steel beam with the end plate is passed through the rectangular groove from top to bottom and fixed; the upper steel pipe column is located above the lower steel pipe column, and its lower end is fixedly connected to the upper end of the upper steel pipe column; at the same time, the upper steel pipe column is fixedly connected to the end plate.

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