A connection device and method for connecting H-shaped steel columns and precast floor slabs

Abstract

This invention relates to the field of steel column and precast floor slab connection structure technology, and discloses a connection device and method for H-shaped steel columns and precast floor slabs, including H-shaped steel columns, support plates, and precast floor slabs; the H-shaped steel columns are fixedly connected to steel beams; the support plates are placed above the steel beams and have a connecting groove on one side, the connecting groove matching the shape of the H-shaped steel column, and the connecting groove is engaged with at least a portion of the flanges and at least a portion of the webs of the H-shaped steel column; the precast floor slab is placed above the support plates and parallel to the support plates; a clearance groove is provided at the connection position between the precast floor slab and the H-shaped steel column, and at least a portion of the H-shaped steel column is located in the clearance groove; the precast floor slab contains reinforcing bars, one end of which protrudes from the clearance groove and is fixedly connected to the H-shaped steel column; the H-shaped steel columns, support plates, and precast floor slabs are connected into an integral structure by post-cast concrete. This invention can reduce construction difficulty, ensure the integrity of the structure, reduce construction costs, and improve construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of connection structure technology between steel columns and precast floor slabs, specifically to a connection device and method for connecting H-shaped steel columns and precast floor slabs. Background Technology

[0002] Prefabricated buildings refer to buildings where a large amount of on-site work in traditional construction methods is transferred to factories. Building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in factories, transported to the construction site, and assembled on-site using reliable connection methods. Prefabricated buildings mainly include precast concrete structures, steel structures, and modern wood structures.

[0003] In the connection between traditional steel structures and precast floor slabs, box-type columns and beams are often used to connect the precast floor slabs. It is necessary to weld support plates or add other structures to the box-type columns to ensure the stability of the connection. However, due to the large amount of steel used in the box-type steel columns, the construction is difficult and the construction efficiency is low. Summary of the Invention

[0004] In view of this, the present invention provides a connection device and method for connecting H-shaped steel columns and precast floor slabs to solve the problems of large steel consumption of box-shaped steel columns, which leads to high construction difficulty and low construction efficiency.

[0005] In a first aspect, the present invention provides a connection device for an H-shaped steel column and a precast floor slab, comprising an H-shaped steel column, a support plate, and a precast floor slab; the H-shaped steel column is fixedly connected to a steel beam; the support plate is disposed above the steel beam and has a connecting groove on one side, the connecting groove matching the shape of the H-shaped steel column, the connecting groove being engaged with at least a portion of the flange and at least a portion of the web of the H-shaped steel column; the precast floor slab is disposed above the support plate and parallel to the support plate; a clearance groove is provided at the connection position between the precast floor slab and the H-shaped steel column, at least a portion of the H-shaped steel column being located within the clearance groove; reinforcing bars are provided inside the precast floor slab, one end of the reinforcing bars protruding from the clearance groove and fixedly connected to the H-shaped steel column; the H-shaped steel column, the support plate, and the precast floor slab are connected as an integral structure by post-cast concrete.

[0006] Beneficial effects: H-shaped steel columns can meet the stress requirements of steel structures, reduce the amount of steel used, reduce the weight of steel structures, reduce construction difficulty, facilitate construction work, and improve construction efficiency; in addition, by connecting the H-shaped steel columns, support plates and precast floor slabs into an integrated structure through post-cast concrete, the rigidity of the connection structure of H-shaped steel columns, support plates and precast floor slabs is improved.

[0007] In an optional embodiment, a first connector is further included. The first connector is located above the tray and spaced apart from the tray. The first connector includes two mutually perpendicular sides, one side of which is fixedly connected to the H-shaped steel column and the other side of which is fixedly connected to the reinforcing steel bar.

[0008] Beneficial effects: By setting the first connector, stable structural support can be provided between the H-shaped steel column and the reinforcing steel, and the precast floor slab can be assembled at the required position of the node to ensure the stability of the overall structure; it can also increase the connection strength between the H-shaped steel column and the reinforcing steel, providing higher load-bearing capacity.

[0009] In one alternative embodiment, the first connector is an angle steel.

[0010] Beneficial effects: Angle steel has a strong load-bearing capacity and stable and reliable load-bearing capacity; moreover, the shape, specifications, size and accessories of angle steel are relatively standardized, which is conducive to production and processing. While ensuring the connection and load-bearing quality, angle steel can minimize the amount of steel used and reduce costs.

[0011] In one optional embodiment, a second connector is further included. The second connector is located at the location of the clearance groove and includes two mutually perpendicular sides. One side is fixedly connected to the groove wall of the clearance groove, and the other side is located between the precast floor slab and the support plate. The top of the second connector is fixedly connected to the precast floor slab, and the bottom of the second connector is fixedly connected to the support plate.

[0012] Beneficial effects: One side of the second connector is fixed to the wall of the clearance groove, and the other side is fixed to the bottom of the precast floor slab, which reinforces the clearance groove; and the bottom of the other side of the second connector is fixedly connected to the support plate, making the connection between the precast floor slab and the support plate more stable.

[0013] In one alternative embodiment, the second connector is an angle steel.

[0014] Beneficial effects: Angle steel has a strong load-bearing capacity and stable and reliable load-bearing capacity; moreover, the shape, specifications, size and accessories of angle steel are relatively standardized, which is conducive to production and processing. While ensuring the connection and load-bearing quality, angle steel can minimize the amount of steel used and reduce costs.

[0015] In one optional embodiment, the pallet includes at least one splicing member, and the connecting groove is disposed on the side where the splicing member connects to the H-shaped steel column, wherein a portion of the flange and a portion of the web of the H-shaped steel column are located within the connecting groove.

[0016] Beneficial effects: The support plate consists of at least one splicing component. The appropriate number of splicing components can be selected according to the installation position of the H-shaped steel column for splicing the support plate. It is suitable for situations where the H-shaped steel column is surrounded by steel beams on all four sides, as well as situations where the H-shaped steel column is connected to the corner of the steel beam. It is more flexible in use, improves construction efficiency and reduces construction costs.

[0017] In one alternative embodiment, the pallet includes four splicing members arranged around the outer periphery of the H-shaped steel column and interconnected with each other.

[0018] Beneficial effects: The H-shaped steel column is surrounded by four splicing parts to bear the weight of the post-poured concrete and to allow the post-poured concrete to solidify in a fixed position; at the same time, it can also play a supporting and strengthening role, prevent the post-poured concrete from being lost or deformed, and ensure the linear accuracy of the final shape of the post-poured concrete.

[0019] Secondly, the present invention also provides a method for connecting an H-shaped steel column and a precast floor slab, including the aforementioned connection device for the H-shaped steel column and the precast floor slab, and comprising the following steps: fixing the steel beam to the H-shaped steel column; clamping the support plate to the outer periphery of the H-shaped steel column; erecting and fixing one end of the precast floor slab with the clearance groove above the support plate; applying grout between the precast floor slab and the steel beam; fixing the reinforcing steel bar at the end of the precast floor slab with the clearance groove to the H-shaped steel column; and pouring post-cast concrete into the gap between the support plate, the clearance groove, and the H-shaped steel column.

[0020] Beneficial effects: The use of H-shaped steel columns saves steel, and the splicing parts and precast floor slabs are all made in the component factory. Only the support plates and reinforcing bars are welded on the construction site. At the same time, the connection method between H-shaped steel columns and precast floor slabs is applicable to various H-shaped beam-column joints, ensuring the integrity of the structure, increasing practicality, reducing costs, and the assembly process is simple and convenient, improving construction efficiency and reducing the construction cycle, which has significant advantages.

[0021] In one optional embodiment, the method for connecting the H-shaped steel column to the precast floor slab further includes: welding a first connector onto the H-shaped steel column, and welding the reinforcing steel bar to the first connector.

[0022] Beneficial effects: By setting the first connector, stable structural support can be provided between the H-shaped steel column and the reinforcing steel, and the precast floor slab can be assembled at the required position of the node to ensure the stability of the overall structure; it can also increase the connection strength between the H-shaped steel column and the reinforcing steel, providing higher load-bearing capacity.

[0023] In one optional embodiment, the method for connecting the H-shaped steel column to the precast floor slab further includes: fixing a second connector to one end of the precast floor slab where the clearance groove is provided, and welding the bottom of the second connector to the support plate.

[0024] Beneficial effects: The second connector reinforces the clearance groove; and the bottom of the second connector is fixedly connected to the support plate, making the connection between the precast floor slab and the support plate more stable. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a front view of a connection device between an H-shaped steel column and a precast floor slab according to an embodiment of the present invention;

[0027] Figure 2 This is a top view of a connection device between an H-shaped steel column and a precast floor slab according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of multiple splicing components according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of a precast floor slab according to an embodiment of the present invention;

[0030] Figure 5 This is a flowchart illustrating a method for connecting an H-shaped steel column to a precast floor slab according to an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. H-shaped steel column; 2. Steel beam; 3. Support plate; 31. Connecting groove; 32. Splice; 4. Precast floor slab; 41. Clearance groove; 42. Reinforcing steel bar; 5. First connector; 6. Second connector. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In related technologies, the connection method between H-shaped steel columns and precast floor slabs involves fitting a shear ring around the outer perimeter of the H-shaped steel column 1 and inserting a precast column cap at the top of the H-shaped steel column 1. The precast column cap is then installed on top of the shear ring. Precast floor slabs 4 in one direction of the precast column cap are then hoisted, with the long end of the precast floor slab 4 aligning with the edge of the precast column cap. The same process is repeated for the other direction of the precast floor slab 4, with the long end of the precast floor slab 4 also aligning with the edge of the precast column cap, thus forming a pouring groove for the post-cast concrete. However, this method is only suitable when the H-shaped steel column 1 is surrounded by steel beams 2 on all four sides, and is not suitable when the H-shaped steel column 1 is connected to the corner of the steel beam 2.

[0035] The following is combined with Figures 1 to 5 The following describes embodiments of the present invention.

[0036] According to an embodiment of the present invention, in one aspect, a connection device for H-shaped steel columns and precast floor slabs is provided, comprising an H-shaped steel column 1, a support plate 3, and a precast floor slab 4; the H-shaped steel column 1 is fixedly connected to a steel beam 2; the support plate 3 is disposed above the steel beam 2, and a connecting groove 31 is provided on one side, the connecting groove 31 matching the shape of the H-shaped steel column 1, and the connecting groove 31 engaging with at least a portion of the flange and at least a portion of the web of the H-shaped steel column 1; the precast floor slab 4 is disposed above the support plate 3, parallel to the support plate 3; a clearance groove 41 is provided at the connection position between the precast floor slab 4 and the H-shaped steel column 1, and at least a portion of the H-shaped steel column 1 is located within the clearance groove 41; a reinforcing bar 42 is provided inside the precast floor slab 4, one end of the reinforcing bar 42 protruding from the clearance groove 41 and fixedly connected to the H-shaped steel column 1; the H-shaped steel column 1, the support plate 3, and the precast floor slab 4 are connected as an integral structure by post-cast concrete.

[0037] The H-shaped steel column 1 can not only meet the stress requirements of the steel structure, but also reduce the amount of steel used in the steel structure, reduce the weight of the steel structure, reduce the difficulty of construction, facilitate the construction work of construction personnel, and improve the construction efficiency; and the H-shaped steel column 1, support plate 3 and precast floor slab 4 are connected into a whole structure by post-poured concrete, which improves the rigidity of the connection structure of H-shaped steel column 1, support plate 3 and precast floor slab 4.

[0038] In a specific implementation, the reinforcing steel bar 42 extends along the length of the precast floor slab 4.

[0039] In one embodiment, a first connector 5 is also included. The first connector 5 is located above the support plate 3 and is spaced apart from the support plate 3. The first connector 5 includes two mutually perpendicular sides, one side of which is fixedly connected to the H-shaped steel column 1 and the other side of which is fixedly connected to the reinforcing steel bar 42.

[0040] By setting the first connector 5, a stable structural support can be provided between the H-shaped steel column 1 and the reinforcing steel bar 42, and the precast floor slab 4 can be assembled at the required position of the node to ensure the stability of the overall structure; it can also increase the connection strength between the H-shaped steel column 1 and the reinforcing steel bar 42, providing a higher load-bearing capacity.

[0041] In one embodiment, the first connector 5 is an angle steel.

[0042] Angle steel has a strong load-bearing capacity and stable and reliable load-bearing performance. Moreover, the shape, specifications, dimensions, and accessories of angle steel are relatively standardized, which is conducive to production and processing. While ensuring the connection and load-bearing quality, angle steel can minimize the amount of steel used and reduce costs.

[0043] As an alternative implementation, the first connector 5 can also be a square steel.

[0044] In one embodiment, a second connector 6 is also included. The second connector 6 is located at the location of the clearance groove 41 and includes two mutually perpendicular sides. One side is fixedly connected to the groove wall of the clearance groove 41; the other side is located between the precast floor slab 4 and the support plate 3, with its top fixedly connected to the precast floor slab 4 and its bottom fixedly connected to the support plate 3.

[0045] One side of the second connector 6 is fixed to the wall of the clearance groove 41, and the other side is fixed to the bottom of the precast floor slab 4, which reinforces the clearance groove 41; and the bottom of the other side of the second connector 6 is fixedly connected to the support plate 3, making the connection between the precast floor slab 4 and the support plate 3 more stable.

[0046] In a specific implementation, the second connector 6 can be pre-embedded in the precast floor slab 4.

[0047] In one embodiment, the second connector 6 is an angle steel.

[0048] Angle steel has a strong load-bearing capacity and stable and reliable load-bearing performance. Moreover, the shape, specifications, dimensions, and accessories of angle steel are relatively standardized, which is conducive to production and processing. While ensuring the connection and load-bearing quality, angle steel can minimize the amount of steel used and reduce costs.

[0049] In one embodiment, the pallet 3 includes at least one splicing member 32, and the connecting groove 31 is disposed on the side where the splicing member 32 connects to the H-shaped steel column 1, with part of the flange and part of the web of the H-shaped steel column 1 located within the connecting groove 31.

[0050] The support plate 3 is composed of at least one splicing piece 32. The appropriate number of splicing pieces 32 can be selected according to the installation position of the H-shaped steel column 1 to splice the support plate 3. It is suitable for the situation where the H-shaped steel column 1 is surrounded by steel beams 2 on all four sides, and also suitable for the situation where the H-shaped steel column 1 is connected to the corner of the steel beam 2. It is more flexible to use, improves construction efficiency and reduces construction costs.

[0051] In one embodiment, the pallet 3 includes four splicing members 32, which are arranged around the outer periphery of the H-shaped steel column 1 and are interconnected.

[0052] The H-shaped steel column 1 is surrounded by four splicing pieces 32 to bear the weight of the post-poured concrete and to allow the post-poured concrete to solidify in a fixed position. At the same time, it can also provide support and strengthen rigidity, prevent the post-poured concrete from being lost or deformed, and ensure the linear accuracy of the final shape of the post-poured concrete.

[0053] In a specific implementation, after the connecting groove 31 of a splice 32 is engaged with the H-shaped steel column 1, the length of the groove wall on the side of the flange away from the web is greater than the length of the groove wall on the side of the flange close to the web, and the length of the groove wall on the side connected to the web is equal to half the length of the web. This ensures that when multiple splices 32 are enclosed around the outer periphery of the H-shaped steel column 1, they can be connected to each other, avoiding the situation where gaps are left between two splices 32 and post-concrete pouring cannot be carried out.

[0054] In a specific implementation, there are four precast floor slabs 4, and the four precast floor slabs 4 are respectively set with four splicing parts 32. The clearance grooves 41 of the four precast floor slabs 4 are set around the outer periphery of the H-shaped steel column 1, forming a pouring groove for post-cast concrete. The support plate 3 formed by splicing the four splicing parts 32 serves as the bottom of the pouring groove.

[0055] In another embodiment of this example, the support plate 3 includes two splicing parts 32, and both splicing parts 32 are located on one side of the web of the H-shaped steel column 1; two precast floor slabs 4 are provided, and the two precast floor slabs 4 are respectively arranged corresponding to the two splicing parts 32. The clearance grooves 41 of the two precast floor slabs 4 and the web of the H-shaped steel column 1 enclose the pouring groove for post-cast concrete, and the support plate 3 formed by splicing the two splicing parts 32 serves as the bottom of the pouring groove.

[0056] In another embodiment of this invention, the support plate 3 includes two splicing components 32, which are located on both sides of the web of the H-shaped steel column 1 and are connected to the flange on one side of the H-shaped steel column 1. Two precast floor slabs 4 are provided, and the two precast floor slabs 4 are respectively arranged corresponding to the two splicing components 32. The device is also provided with two baffles, which are located on both sides of the web of the H-shaped steel column 1 and are arranged opposite to the flange on one side of the H-shaped steel column 1. The baffles and the clearance grooves 41 of the two precast floor slabs 4 enclose the pouring groove for the post-cast concrete, and the support plate 3 formed by splicing the two splicing components 32 serves as the bottom of the pouring groove.

[0057] In another embodiment of this invention, the support plate 3 includes a splicing member 32 and is located on one side of the web of the H-shaped steel column 1; a precast floor slab 4 is provided, and the precast floor slab 4 is correspondingly arranged with the splicing member 32; and the device is also provided with a baffle, which is located on one side of the web of the H-shaped steel column 1 and is arranged opposite to the flange on one side of the H-shaped steel column 1, and is enclosed with the clearance groove 41 of the precast floor slab 4 to form a pouring groove for post-cast concrete, and a splicing member 32 serves as the bottom of the pouring groove.

[0058] According to an embodiment of the present invention, another aspect provides a method for connecting an H-shaped steel column and a precast floor slab, including the connection device for the H-shaped steel column and the precast floor slab as described above, and comprising the following steps: fixing the steel beam 2 to the H-shaped steel column 1; clamping the support plate 3 to the outer periphery of the H-shaped steel column 1; erecting and fixing one end of the precast floor slab 4 with the clearance groove 41 above the support plate 3; applying grout between the precast floor slab 4 and the steel beam 2; fixing the reinforcing steel bar 42 of the end of the precast floor slab 4 with the clearance groove 41 to the H-shaped steel column 1; and pouring post-cast concrete into the gap between the support plate 3 and the clearance groove 41 and the H-shaped steel column 1.

[0059] The use of H-shaped steel columns 1 saves steel. Meanwhile, the splice 32 and precast floor slabs 4 are all made in the component factory. Only the support plate 3 and the reinforcing steel bars 42 are welded on the construction site. At the same time, the connection method between the H-shaped steel columns and the precast floor slabs is applicable to various H-shaped beam-column joints, ensuring the integrity of the structure, increasing practicality, reducing costs, and the assembly process is simple and convenient, improving construction efficiency and reducing the construction cycle, which has significant advantages.

[0060] In a specific implementation, based on the installation position of the H-shaped steel column 1, a suitable number of splicing pieces 32 are selected and spliced ​​around the outer perimeter of the H-shaped steel column 1 above the steel beam 2 to form a support plate 3, and multiple splicing pieces 32 are connected by welding.

[0061] In one embodiment, the method for connecting the H-shaped steel column to the precast floor slab further includes: welding a first connector 5 onto the H-shaped steel column 1, and welding the reinforcing steel bar 42 to the first connector 5.

[0062] By setting the first connector 5, a stable structural support can be provided between the H-shaped steel column 1 and the reinforcing steel bar 42, and the precast floor slab 4 can be assembled at the required position of the node to ensure the stability of the overall structure; it can also increase the connection strength between the H-shaped steel column 1 and the reinforcing steel bar 42, providing a higher load-bearing capacity.

[0063] In one embodiment, the method of connecting the H-shaped steel column and the precast floor slab further includes: fixing a second connector 6 on the end of the precast floor slab 4 where the clearance groove 41 is provided, and welding the bottom of the second connector 6 to the support plate 3.

[0064] The second connector 6 reinforces the clearance groove 41; and the bottom of the second connector 6 is fixedly connected to the support plate 3, making the connection between the precast floor slab 4 and the support plate 3 more stable.

[0065] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A connection device for H-shaped steel columns and precast floor slabs, characterized in that, include: H-shaped steel column (1) is fixedly connected to steel beam (2); A support plate (3) is provided above the steel beam (2) and a connecting groove (31) is provided on one side. The connecting groove (31) matches the shape of the H-shaped steel column (1). The connecting groove (31) is engaged with at least part of the flange and at least part of the web of the H-shaped steel column (1). A precast floor slab (4) is set above the support plate (3) and parallel to the support plate (3); a clearance groove (41) is provided at the connection position between the precast floor slab (4) and the H-shaped steel column (1), and the H-shaped steel column (1) is at least partially located in the clearance groove (41); a reinforcing bar (42) is provided inside the precast floor slab (4), one end of the reinforcing bar (42) protrudes from the clearance groove (41) and is fixedly connected to the H-shaped steel column (1); The H-shaped steel column (1), the support plate (3) and the precast floor slab (4) are connected into an integral structure by post-cast concrete; It also includes a first connector (5), which is located above the tray (3) and spaced apart from the tray (3). The first connector (5) includes two mutually perpendicular sides, one side of which is fixedly connected to the H-shaped steel column (1) and the other side of which is fixedly connected to the reinforcing steel bar (42). It also includes a second connector (6), which is located at the location of the clearance groove (41) and includes two mutually perpendicular sides. One side is fixedly connected to the groove wall of the clearance groove (41); the other side is located between the precast floor slab (4) and the support plate (3), with the top fixedly connected to the precast floor slab (4) and the bottom fixedly connected to the support plate (3).

2. The connection device between the H-shaped steel column and the precast floor slab according to claim 1, characterized in that, The first connector (5) is an angle steel.

3. The connection device between the H-shaped steel column and the precast floor slab according to claim 1, characterized in that, The second connector (6) is an angle steel.

4. The connection device between the H-shaped steel column and the precast floor slab according to any one of claims 1 to 3, characterized in that, The pallet (3) includes at least one splicing piece (32), and the connecting groove (31) is provided on the side where the splicing piece (32) connects to the H-shaped steel column (1). Part of the flange and part of the web of the H-shaped steel column (1) are located in the connecting groove (31).

5. The connection device between the H-shaped steel column and the precast floor slab according to claim 4, characterized in that, The pallet (3) includes four splicing components (32), which are arranged around the outer periphery of the H-shaped steel column (1) and are interconnected.

6. A method for connecting an H-shaped steel column to a precast floor slab, characterized in that, The device includes a connection device between the H-shaped steel column and the precast floor slab as described in any one of claims 1 to 5, and includes the following steps: The steel beam (2) is fixed to the H-shaped steel column (1); The tray (3) is snapped onto the outer periphery of the H-shaped steel column (1); The end of the precast floor slab (4) with the clearance groove (41) is erected and fixed above the support plate (3); Grouting is applied between the precast floor slab (4) and the steel beam (2); The reinforcing steel bar (42) at one end of the precast floor slab (4) with the clearance groove (41) is fixedly connected to the H-shaped steel column (1); Post-cast concrete is poured into the gap between the relief groove (41) and the H-shaped steel column (1) above the pallet (3).

7. The method for connecting H-shaped steel columns and precast floor slabs according to claim 6, characterized in that, Also includes: A first connector (5) is welded onto the H-shaped steel column (1) to connect the stressed steel bar (42) to the first connector (5).

8. The method for connecting H-shaped steel columns and precast floor slabs according to claim 6, characterized in that, Also includes: A second connector (6) is fixed on one end of the precast floor slab (4) where the clearance groove (41) is provided, and the bottom of the second connector (6) is welded to the support plate (3).

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