Steel structure special-shaped column eccentric supporting structure

Abstract

The utility model discloses a steel structure special-shaped column eccentric supporting structure, relates to the field of high-rise steel structure residential building structure systems, and aims to solve the problems that in the prior art, a column body protrudes out of a wall surface, and construction procedures are tedious. The special-shaped column and the H-shaped steel beam are connected through bolts, the requirement for rapid connection is met while the supporting strength is guaranteed, the structural effect of a strong joint and a weak component can be achieved by forming plastic hinge holes in the two ends of the H-shaped steel beam, and the stress effect of the strong joint and the weak component can be achieved under the condition that the width of a flange is not increased; the eccentric supports arranged at the corners, the staircase and the elevator room increase the overall rigidity on the premise of not influencing the use function of the building; the thickness of the floor slab is reduced by using the prestressed hollow slab, the indoor use clear height is increased, meanwhile, the construction period is shortened, and wide market popularization space is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of high-rise steel structure residential building structural systems, specifically a steel structure irregular column eccentric support structure. Background Technology

[0002] With the increasing demands for housing quality and the vigorous promotion of new building industrialization, steel frame structure housing has gradually become well-known. However, in ordinary steel frame structures, the columns are mostly rectangular with large cross-sectional dimensions, which intrude into the interior of the building, affecting not only the appearance but also the effective use of space. At the same time, the traditional "strong node, weak member" method is achieved by widening the flange width at the end of the beam, but widening the flange width will cause it to protrude from the building wall, affecting the appearance.

[0003] Chinese patent CN103711215B discloses a post-earthquake easily repairable steel irregular column frame - eccentric support frame, which achieves "strong node weak component" through prestressed steel tie rod tensioning. However, the prestressed tensioning construction process on the construction site of this prior art is relatively complicated and the construction quality is not easy to control. Finally, the use of floor slabs with cast-in-place concrete will significantly increase the construction period and increase the construction cost. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a steel structure irregular column eccentric support structure. It uses steel irregular columns with a thickness no greater than that of the wall to replace rectangular or H-shaped cross-section columns. The beam-column joint adopts the method of appropriately weakening the beam ends to achieve "strong joint weak component". The floor slab adopts prestressed hollow slab, which not only shortens the construction period, but also meets the needs of high-quality housing and new building industrialization, and can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, this utility model discloses a steel structure irregular column eccentric support structure. The technical solution includes an irregular steel column and an H-shaped steel beam. The irregular column and the H-shaped steel beam are connected, and an inter-column eccentric support is installed between them. The width of the irregular column is no greater than the thickness of the partition wall, so as to meet the structural stress requirements while reducing the area occupied by the interior space. The irregular column and the H-shaped steel beam are connected by a beam-column connection node. The beam-column connection node includes a connecting plate welded to the end face of the irregular column. The connecting plate is vertically arranged, and bearing plates are respectively arranged above and below the connecting plate. The bearing plates are horizontally arranged. The H-beam is not connected to the connecting plate, and the gap between the bearing plate and the connecting plate is used to accommodate the flange of the H-beam. The web of the H-beam has a notch at the end corresponding to the position of the bearing plate to avoid interference with the bearing plate. The web is detachably connected to the connecting plate, and the flange of the H-beam slides in contact with the top surface of the bearing plate. The flange of the H-beam has a plastic hinge hole. When the H-beam is subjected to downward pressure, it will undergo elastic and plastic deformation. The plastic hinge hole can resist this deformation through its own deformation to prevent cracks from forming in the lower part or inside of the H-beam, thereby reducing the strength and load-bearing capacity of the H-beam.

[0006] As a preferred technical solution of this utility model, the connecting plate is provided with a first bolt hole, and the web end of the H-shaped steel beam is provided with a second bolt hole that corresponds to the position and matches the size of the first bolt hole. The first bolt hole and the second bolt hole are connected by a connecting bolt and a connecting nut, and the H-shaped steel beam and the irregular column can be locked by the bolt and nut.

[0007] As a preferred embodiment of this utility model, the plastic hinge holes are opened at both ends of the H-shaped steel beam, which can ensure the strength of the H-shaped steel beam.

[0008] As a preferred technical solution of this utility model, the plastic hinge holes have two rows and multiple columns, and the hole diameter gradually increases from the end of the flange to the middle. The hole spacing of each column of plastic hinge holes first decreases and then increases from the end of the flange to the middle, presenting an "X" shape.

[0009] In a preferred embodiment of this invention, prestressed hollow slabs are laid on the H-shaped steel beam. Multiple prestressed hollow slabs are connected to adjacent slabs by reinforcing bars at the joints, and grouting material is applied to the joints. This method allows the prestressed hollow slabs to be connected.

[0010] In a preferred embodiment of this utility model, the prestressed hollow slab is connected to the H-beam via a hollow slab connection node. The hollow slab connection node includes a stud, which is welded to the H-beam. A flexible pad is provided between the prestressed hollow slab and the H-beam. The grouting material connecting the prestressed hollow slab integrates the prestressed hollow slab, the slab joint tie bars, the stud, the H-beam, and the flexible pad into a single unit. The inner side of the prestressed hollow slab has a hollow slab end cap, and the grouting material is located on the side of the two hollow slab end caps closest to the stud.

[0011] As a preferred technical solution of this utility model, the irregular column includes L-shaped column, T-shaped column and cross-shaped column to meet different house configurations.

[0012] In a preferred embodiment of this invention, the irregularly shaped column is provided with transverse stiffening plates spaced apart along the vertical direction, and the transverse stiffening plates are welded to the web and flanges of the irregularly shaped column; the H-beam is provided with longitudinal stiffening plates, which are located at the connection between the H-beam and the eccentric support between the columns. This improves the torsional resistance of the irregularly shaped column and the H-beam, and enhances the stability of the irregularly shaped column.

[0013] As a preferred technical solution of this utility model, the inter-column eccentric support is set at the edge of the structural system or at the location of the stairwell or elevator shaft to strengthen the strength of key points.

[0014] As a preferred technical solution of this utility model, the bottom of the first layer of the irregular column is provided with a column base stiffening plate, which is provided at the end of the column flange, the middle part, and the middle of the web.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model connects pure steel irregular columns (not exceeding the wall thickness) to H-shaped steel beams using beam-column connection nodes. Support plates at the beam-column connection nodes support the flanges of the H-shaped steel beams, and the connecting plate connects to the web of the H-shaped steel beams, achieving rapid connection while ensuring support strength. By opening "X"-shaped plastic hinge holes at both ends of the H-shaped steel beams, a "strong node, weak component" load-bearing effect can be achieved without increasing the flange width. Eccentric supports installed at corners, stairwells, and elevator shafts increase overall rigidity without affecting the building's functionality. The use of prestressed hollow slabs reduces floor slab thickness, increases interior usable height, shortens construction time, and simplifies construction procedures, thus possessing broad market potential. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2This is a cross-sectional view of the L-shaped column of this utility model;

[0018] Figure 3 This is a cross-sectional view of the cross-shaped column of this utility model;

[0019] Figure 4 This is a cross-sectional view of the T-shaped column of this utility model;

[0020] Figure 5 This is a schematic diagram of the beam-column connection node structure of this utility model;

[0021] Figure 6 This is an exploded view of the beam-column connection node structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the cross-section of the mid-span beam-hollow slab connection node of this utility model;

[0023] Figure 8 This is a schematic diagram of the cross-section of the side span beam-hollow slab connection node of this utility model;

[0024] Figure 9 This is a schematic diagram of the cross-section of the splicing joint of the prestressed hollow slab of this utility model.

[0025] In the diagram: 1. Irregular column; 2. H-beam; 3. Eccentric bracing between columns; 4. Prestressed hollow slab; 5. Beam-column connection node; 6. Hollow slab connection node; 7. L-shaped column; 8. Cross-shaped column; 9. T-shaped column; 10. Transverse stiffening plate; 11. Longitudinal stiffening plate; 12. Joint tie bar; 13. Grouting material; 14. Reinforcing bar; 15. Plastic hinge hole; 16. Stud; 17. Hollow slab end cap; 18. Flexible pad; 19. Column base stiffening plate; 20. Connecting plate; 21. Bearing plate; 22. Connecting bolt; 23. Connecting nut. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0027] like Figures 1 to 9 As shown, this utility model discloses an eccentric support structure for irregularly shaped steel columns. The technical solution includes an irregularly shaped column 1, which is made of pure steel. To meet the support requirements of the corners, beams, and center of the residential building, such as... Figure 2 , Figure 3 , Figure 4As shown, the special-shaped column 1 includes an L-shaped column 7, a cross-shaped column 8, and a T-shaped column 9. To enhance the torsional resistance of the special-shaped column 1, transverse stiffening plates 10 are provided on its outer side, and L-shaped reinforcing ribs 14 are provided on its inner side. To enhance the stiffness between the special-shaped column 1 and the column base, as Figure 1 shown, column base stiffening plates 19 are provided between the end, middle of the flange of the column body of the special-shaped column 1, the middle of the web, and the column base.

[0028] As Figure 1 , Figure 5 and Figure 6 shown, the special-shaped column 1 and the H-shaped steel beam 2 are connected by a beam-column connection joint 5. The beam-column connection joint 5 includes a connecting plate 20 and a bearing plate 21. The connecting plate 20 is vertically welded to the outside of the flange of the special-shaped column 1, and the bearing plate 21 is horizontally welded to the outside of the flange of the special-shaped column 1. There are two bearing plates 21, which are arranged above and below the connecting plate 20 and are arranged in an "I" shape with the connecting plate 20. To prevent interference between the bearing plate 21 and the end face of the H-shaped steel beam 2 when installing the H-shaped steel beam 2, the connecting plate 20 and the bearing plate 21 are not connected, and fan-shaped openings are provided at the upper and lower ends of the web of the H-shaped steel beam 2. Four first bolt holes are provided in the connecting plate 20 in a "square" shape distribution, and second bolt holes corresponding to the positions and matching in size are provided at both ends of the web of the H-shaped steel beam 2. After using the connecting bolts 22 to pass through the first bolt holes and the second bolt holes and locking them with the connecting nuts 23, the special-shaped column 1 and the H-shaped steel beam 2 can be connected. When connected, the bearing plate 21 supports the end of the H-shaped steel beam 2.

[0029] To achieve the force-bearing effect of "strong joints and weak members", plastic hinge holes 15 are provided in the flanges at both ends of the H-shaped steel beam 2. As Figure 5 , Figure 6 shown, there are two rows and five columns of plastic hinge holes 15. From the end of the H-shaped steel beam 2 to the middle, the aperture of the plastic hinge holes 15 gradually increases, and the hole spacing between the two holes in each column first decreases and then increases, that is, the hole spacing of the plastic hinge holes 15 in the third column is the smallest, and the hole spacing of the plastic hinge holes 15 in the first column and the fifth column is the largest. After the H-shaped steel beam 2 is subjected to a downward pressure, elastic deformation and plastic deformation will occur, and the plastic hinge holes 15 can resist this deformation through their own deformation to prevent cracks from forming in the lower part or inside of the H-shaped steel beam 2, reducing the strength and load-bearing capacity of the beam. And the plastic hinge holes 15 are provided at both ends of the beam instead of the middle, which can ensure the strength of the beam while achieving the above effects.

[0030] To improve the overall strength of the steel frame structure, inter-column eccentric supports 3 are installed at the edges, stairwells, and elevator shafts of the structural system. The lower end of the inter-column eccentric support 3 is connected to the flange and column base of the irregular column 1, and the upper end is connected to the lower flange of the H-beam 2. To improve the strength of the H-beam 2, a longitudinal stiffening plate 11 is installed between the two flanges at the junction of the H-beam 2 and the inter-column eccentric support 3. The longitudinal stiffening plate 11 is welded to the flange and web.

[0031] After the steel structure was erected, the floor slabs were laid. The floor slabs were prestressed hollow core slabs 4, which were laid on the H-beams 2. Figure 1 As shown, the irregular column 1 divides each floor into multiple areas. In this embodiment, there are four areas. The prestressed hollow slabs 4 laid in each area are in the same direction and are perpendicular to the prestressed hollow slabs 4 of the adjacent areas. Hollow slab connection nodes 6 are set on the top surface of the H-beam 2. The prestressed hollow slabs 4 are fixed to the H-beam 2 through the hollow slab connection nodes 6.

[0032] like Figure 7 , Figure 8 As shown, the hollow slab connection node 6 includes studs 16, and hollow slab plugs 17 are provided in the connection surfaces on both sides of the prestressed hollow slab 4 to prevent excessive filling of the interior of the prestressed hollow slab 4 with grout during grouting; for the mid-span beam, as Figure 7 As shown, the stud 16 is welded to the middle of the top surface of the H-beam 2. A flexible pad 18 is placed between the prestressed hollow slab 4 and the H-beam 2. The two prestressed hollow slabs 4 are respectively set on both sides of the stud 16 and connected by the slab joint tie bar 12. Grouting material 13 is filled between the two prestressed hollow slabs 4. The grouting material 13 casts the H-beam 2, prestressed hollow slab 4, slab joint tie bar 12, stud 16, hollow slab end cap 17, and flexible pad 18 into a whole.

[0033] like Figure 8 As shown, at the mid-span beam, studs 16 are welded to the side of the top surface of the H-beam 2 away from the prestressed hollow slab 4, and reinforcing bars and stirrups are installed on this side. A flexible pad 18 is placed between the prestressed hollow slab 4 and the H-beam 2. After being connected to the reinforcing bars using the slab joint tie bars 12, the edge strip is cast using grouting material 13. At the same time, the edge strip, studs 16, H-beam 2, prestressed hollow slab 4, slab joint tie bars 12, studs 16, hollow slab end caps 17, and flexible pad 18 are cast into a whole.

[0034] like Figure 9 As shown, adjacent prestressed hollow slabs 4 are connected by slab joint tie bars 12, and grouting material 13 is filled at the joint to form a whole.

[0035] Working principle:

[0036] First, position and install the irregularly shaped column 1 according to the building structure. Fix the column base with anchor bolts and grout. Install L-shaped columns 7 at the corners, T-shaped columns 9 at the wall joints where the two end faces face each other, and cross-shaped columns 8 at the wall joints where the four sides are cross-shaped. When installing the H-beam 2, overlap the end flanges of the H-beam 2 onto the bearing plate 21, and overlap the web with the connecting plate 20. The first bolt hole of the connecting plate 20 and the second bolt hole of the web of the H-beam 2 are aligned. Use connecting bolts 22 to pass through the first bolt hole and the second bolt hole, and use connecting nuts 23 to lock them in place.

[0037] Studs 16 are welded to the top surface of the H-beam 2. For the mid-span beam, studs 16 are welded to the middle of the H-beam 2 section; for the side span beams, studs 16 are welded to the outer side of the H-beam 2 section. A flexible pad 18 is laid on the top surface of the H-beam 2. Prestressed hollow slabs 4 are then laid on the H-beam 2, with the flexible pad 18 positioned between the prestressed hollow slabs 4 and the H-beam 2. At the mid-span beam, adjacent prestressed hollow slabs 4 are connected using slab joint tie bars 12, and grouting material 13 is poured into the slab joints. The H-beam 2, prestressed hollow slabs 4, slab joint tie bars 12, studs 16, hollow slab end caps 17, and flexible pad 18 are then connected. The base plate 18 is cast as a whole. At the edge span beam, horizontal reinforcing bars and stirrups are first set at the edge, and then the prestressed hollow slab 4 and stirrups are connected using slab joint tie bars 12. Grouting material 13 is used to cast the horizontal reinforcing bars and stirrups to form an edge strip. At the same time, the edge strip, studs 16, H-shaped steel beam 2, prestressed hollow slab 4, slab joint tie bars 12, studs 16, hollow slab end caps 17, and flexible base plate 18 are cast as a whole. On the same beam, adjacent prestressed hollow slabs 4 are connected using slab joint tie bars 12, and grouting material 13 is poured at the slab joint to cast the two prestressed hollow slabs 4 and slab joint tie bars 12 as a whole.

[0038] The mechanical connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It is common knowledge.

[0039] Components not described in detail in this article are existing technologies.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel structure with eccentric support for irregularly shaped columns, comprising irregularly shaped columns (1) and H-shaped steel beams (2), wherein the irregularly shaped columns (1) and the H-shaped steel beams (2) are connected, and an inter-column eccentric support (3) is installed between them, characterized in that: The width of the irregular column (1) is not greater than the thickness of the partition wall; the irregular column (1) and the H-beam (2) are connected by a beam-column connection node (5), the beam-column connection node (5) includes a connecting plate (20), which is set on the end face of the irregular column (1), the connecting plate (20) is set vertically, and the connecting plate (20) is provided with a bearing plate (21) on the top and bottom respectively, the bearing plate (21) is set horizontally and is not connected to the connecting plate (20); the web end of the H-beam (2) is provided with a notch corresponding to the position of the bearing plate (21), the web is detachably connected to the connecting plate (20), the flange of the H-beam (2) and the top surface of the bearing plate (21) slide in contact; the flange of the H-beam (2) is provided with a plastic hinge hole (15).

2. The eccentric support structure for irregularly shaped steel columns according to claim 1, characterized in that: The connecting plate (20) has a first bolt hole, and the web end of the H-beam (2) has a second bolt hole that corresponds to the position of the first bolt hole and matches its size. The first bolt hole and the second bolt hole are connected by a connecting bolt (22) and a connecting nut (23).

3. The eccentric support structure for irregularly shaped steel columns according to claim 1, characterized in that: The plastic hinge holes (15) are formed at both ends of the H-beam (2).

4. The eccentric support structure for irregularly shaped steel columns according to claim 3, characterized in that: The plastic hinge holes (15) have two rows and multiple columns, and their diameter gradually increases from the end of the flange to the middle. The spacing between the holes in each column of the plastic hinge holes (15) first decreases and then increases from the end of the flange to the middle, presenting an "X" shape.

5. The eccentric support structure for irregularly shaped steel columns according to claim 1 or 4, characterized in that: The H-shaped steel beam (2) is covered with prestressed hollow slabs (4). There are multiple prestressed hollow slabs (4). Adjacent prestressed hollow slabs (4) are connected by slab joint tie bars (12), and there is grouting material (13) at the joint.

6. The eccentric support structure for irregularly shaped steel columns according to claim 5, characterized in that: The prestressed hollow slab (4) is connected to the H-beam (2) through a hollow slab connection node (6). The hollow slab connection node (6) includes a stud (16), which is welded to the H-beam (2). There is a flexible pad (18) between the prestressed hollow slab (4) and the H-beam (2). The prestressed hollow slab (4), the slab joint tie bar (12), the stud (16), the H-beam (2), and the flexible pad (18) are connected by the grouting material (13) of the prestressed hollow slab (4). There is a hollow slab plug (17) on the inner side of the prestressed hollow slab (4). The grouting material (13) is located on the side of the two hollow slab plugs (17) close to the stud (16).

7. The eccentric support structure for irregularly shaped steel columns according to claim 1, characterized in that: The irregular column (1) includes L-shaped column (7), T-shaped column (9) and cross-shaped column (8).

8. The eccentric support structure for irregularly shaped steel columns according to claim 7, characterized in that: The irregular column (1) is provided with transverse stiffening plates (10) at intervals along the vertical direction. The transverse stiffening plates (10) are connected to the web and flange of the irregular column (1). The H-beam (2) is provided with longitudinal stiffening plates (11). The longitudinal stiffening plates (11) are located at the connection between the H-beam (2) and the inter-column eccentric support (3).

9. The eccentric support structure for irregularly shaped steel columns according to claim 1, characterized in that: The inter-column eccentric support (3) is set at the edge of the structural system or at the location of the stairwell or elevator shaft.

10. The eccentric support structure for irregularly shaped steel columns according to claim 1, characterized in that: The irregular column (1) is provided with a column base stiffening plate (19) at the column base, which is located at the end of the flange, the middle part and the middle part of the web of the irregular column (1).

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