Combined box type high-strength thin-wall steel reinforced concrete column

Abstract

The utility model discloses a combined box type high-strength thin-walled steel reinforced concrete column which comprises a cold-formed thin-walled steel panel, a box type steel framework and a concrete body, the cold-formed thin-walled steel panel is formed by connecting three L-shaped steel panels and an L-shaped steel panel with a plug welding groove in pairs, and a welding seam gap is reserved at the joint of every two L-shaped steel panels. The box-type steel framework is formed by welding vertical stiffening ribs and inner partition plates, the inner partition plates are rectangular steel plates with grooves in the periphery, the vertical stiffening ribs are welded to the grooves in the periphery of the inner partition plates in an embedded mode, the cold-formed thin-walled steel panels are connected with the vertical stiffening ribs in a welded mode in reserved welding seam gaps, and the cold-formed thin-walled steel panels and the inner partition plates are provided with binding faces. The cold-formed thin-walled steel panel and the inner partition plate are welded and connected on the binding face, and the concrete body is poured into a rectangular cavity formed after the cold-formed thin-walled steel panel and the box type steel framework are spliced. The combined box type section design is adopted, the steel framework is arranged in the column, welding is convenient, the self weight and the hoisting difficulty are reduced, the anti-seismic performance is excellent, and the space utilization rate is high.

Description

Technical Field

[0001] The utility model relates to the technical field of building (structure) construction, in particular to a combined box-shaped high-strength thin-wall steel-framed concrete column. Background Art

[0002] High-strength thin-walled steel-framed concrete columns have high bearing capacity and superior seismic performance, and are mainly used in large public buildings. Traditional composite box-type high-strength thin-walled steel-framed concrete columns have large cross-sectional dimensions and thick steel plates, which are difficult to hoist, have low space utilization and high costs, limiting their further development in the construction field. The existing public patent (patent number: 2020105718447) discloses a high-strength thin-walled steel tube concrete composite column, which is a new type of composite column that uses steel plates to splice into box-shaped columns. The joints have high rigidity and are easy to weld. When pouring concrete, no formwork is required. The precast beam hoisting construction during the construction phase can be met without pouring concrete inside the component. However, the outer wall of the box is only connected to the vertical stiffening ribs, and the overall stability is poor. It is also impossible to further reduce the cross-sectional dimensions of the steel tube concrete column to improve material utilization and space utilization. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a combined box-type high-strength thin-walled steel-framed concrete column with small cross-sectional size, good overall performance, high material utilization, convenient transportation and installation, and high space utilization.

[0004] According to the utility model, a combined box-type high-strength thin-walled steel frame concrete column is provided, including a cold-bent thin-walled steel panel, a box-type steel frame and a concrete body. The cold-bent thin-walled steel panel is composed of three L-shaped steel panels and an L-shaped steel panel with a plug welding groove connected in pairs. A weld gap is reserved at the connection between the two L-shaped steel panels. The box-type steel frame is welded by vertical stiffening ribs and inner partitions. The inner partition is a rectangular steel plate with grooves on all sides. The vertical stiffening ribs are embedded in the grooves around the inner partition. The vertical stiffening ribs and the inner partition are connected in pairs. The partition is welded and connected at the grooves around the inner partition, the cold-bent thin-walled steel panel is welded and connected to the vertical stiffening rib in the weld gap, the cold-bent thin-walled steel panel has a fitting surface with the inner partition, the cold-bent thin-walled steel panel and the inner partition are welded and connected at the fitting surface, the L-shaped steel panel with plug welding groove is welded and connected to the inner partition through the plug welding groove, and the concrete body is cast in a rectangular cavity formed by splicing the cold-bent thin-walled steel panel and the box-type steel frame.

[0005] The combined box-type high-strength thin-walled steel-framed concrete column provided by the utility model also has the following auxiliary technical features:

[0006] The inner partitions are evenly arranged at a certain distance along the vertical stiffening ribs.

[0007] The L-shaped steel panel with plug welding grooves is provided with the plug welding grooves arranged at a certain distance along the longitudinal direction, the three L-shaped steel panels are welded and connected to the vertical stiffening ribs and the inner partition one by one, the L-shaped steel panel with plug welding grooves is welded and connected to the vertical stiffening ribs, and the L-shaped steel panel with plug welding grooves is welded and connected to the inner partition through the plug welding grooves.

[0008] A certain number of tie nails are welded longitudinally on the inner side of the cold-bent thin-walled steel panel.

[0009] The vertical stiffening rib is a C-shaped steel, the side limbs of the C-shaped steel are welded to the inner partition groove, and the back of the limbs is welded to the cold-bent thin-walled steel panel.

[0010] The inner partition plate is provided with ventilation holes at the four corners and a grouting hole in the middle to facilitate the pouring of the concrete body.

[0011] The cold-bent thin-walled steel panel and the box-shaped steel frame are made of cold-bent steel of Q355 or above.

[0012] The concrete body is high-strength concrete above C50.

[0013] Compared with the prior art, the combined box-type high-strength thin-walled steel-framed concrete column provided by the utility model has the following beneficial effects:

[0014] 1. The composite box-type high-strength thin-walled steel-reinforced concrete column adopts a composite box-type section design, and a steel skeleton is provided inside the column. The performance advantages of the steel tube concrete composite column and the steel-reinforced concrete column are superimposed, the mechanical properties of the components are optimized, the cross-sectional size is significantly reduced, and the space utilization rate is improved.

[0015] 2. The wall thickness of the combined box-type high-strength thin-walled steel-framed concrete column is reduced, the dead weight is reduced, and efficient utilization of materials is achieved.

[0016] 3. The steel frame in the combined box-type high-strength thin-walled steel-reinforced concrete column is welded to the external cold-bent thin-walled steel panel, which has higher overall rigidity and stability and can better resist external forces.

[0017] 4. The cold-bent thin-walled steel panels on the outside of the combined box-type high-strength thin-walled steel-framed concrete columns are easy to weld and have high rigidity at the joints. They can be welded in factories automatically or on-site, thereby improving construction efficiency.

[0018] 5. The combined box-type high-strength thin-walled steel-reinforced concrete column adopts a box-type section, and the on-site concrete pouring does not require formwork, which speeds up the construction and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0021] Figure 3 It is a top view of the splicing combination of cold-bent thin-walled steel panels of the utility model.

[0022] Figure 4 It is a structural schematic diagram of the L-shaped steel panel of the utility model.

[0023] Figure 5 The utility model is a schematic structural diagram of an L-shaped steel panel with a plug welding groove.

[0024] Figure 6 It is a structural schematic diagram of the box-type steel frame of the utility model.

[0025] Figure 7 It is a structural schematic diagram of the inner partition of the utility model.

[0026] Figure 8 It is a structural schematic diagram of the cold-bent thin-walled steel panel and the box-type steel frame spliced ​​together in the utility model.

[0027] In the figure: 1. Cold-bent thin-walled steel panel; 11. L-shaped steel panel; 12. L-shaped steel panel with plug welding groove; 13. Weld gap; 14. Plug welding groove; 15. Tie nails; 2. Box-type steel frame; 21. Vertical reinforcing ribs; 211. Limb side; 212. Limb back; 22. Inner partition; 221. Groove; 222. Fitting surface; 223. Air vent; 224. Grouting hole; 3. Concrete body; 4. Rectangular cavity. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0029] See also Figures 1 to 8In an embodiment of a combined box-type high-strength thin-walled steel-framed concrete column provided by the utility model, the cold-bent thin-walled steel panel 1, the box-type steel frame 2 and the concrete body 3 are included. The cold-bent thin-walled steel panel 1 is composed of three L-shaped steel panels 11 and an L-shaped steel panel 12 with a plug welding groove connected in pairs. A weld gap 13 is reserved at the connection between the L-shaped steel panel 11 and the L-shaped steel panel 12 with a plug welding groove. The box-type steel frame 2 is welded by vertical stiffening ribs 21 and inner partitions 22. The vertical stiffening ribs 21 are C-shaped steels, and the inner partitions 22 are rectangular steel plates with grooves on all sides. The vertical stiffening ribs 21 are C-shaped steels, and the inner partitions 22 are rectangular steel plates with grooves on all sides. Embedded in the grooves 221 around the inner partition 22, the vertical stiffening ribs 21 and the inner partition 22 are welded and connected at the grooves 221 around the inner partition 22, the cold-bent thin-walled steel panel 1 and the vertical stiffening ribs 21 constituting the box-type steel frame 2 are welded and connected at the weld gap 13, the cold-bent thin-walled steel panel 1 and the inner partition 22 constituting the box-type steel frame 2 have a fitting surface 222, the cold-bent thin-walled steel panel 1 and the inner partition 22 constituting the box-type steel frame 2 are welded and connected at the fitting surface 222, and the concrete body 3 is cast in the rectangular cavity 4 formed by splicing the cold-bent thin-walled steel panel 1 and the box-type steel frame 2. The cold-bent thin-walled steel panel 1 is welded to the vertical stiffening ribs 21 arranged on the box-type steel frame 2 through the reserved weld gap 13. The mechanical properties of the component cross section are good during welding, there is no weakening of concrete constraints, and the steel plate is simple to process. The joints and the vertical stiffening ribs 21 can be welded automatically or on-site, thereby improving construction efficiency. The cold-bent thin-walled steel panel 1 is completely welded to the box-type steel frame 2, which significantly reduces the cross-sectional size while giving the component higher overall stiffness and stability.

[0030] See also Figure 5 and Figure 8 The L-shaped steel panel 12 with plug welding grooves is provided with plug welding grooves 14 arranged at a certain distance along the longitudinal direction. After the three L-shaped steel panels 11 are welded and connected with the vertical stiffening ribs 21 and the inner partition 22 one by one, the L-shaped steel panel 12 with plug welding grooves is welded and connected with the vertical stiffening ribs 21. Then, the L-shaped steel panel 12 with plug welding grooves is welded and connected with the inner partition 22 at the fitting surface 222 through the plug welding grooves 14. The L-shaped steel panel 12 with plug welding grooves is welded and connected with the inner partition 22 through the plug welding grooves 14, which enhances the overall rigidity and stability of the steel column. The formed box-type pipe can be free of formwork when pouring concrete, which greatly improves the construction efficiency.

[0031] See also Figure 6 and Figure 7 In an embodiment of a combined box-type high-strength thin-walled steel-reinforced concrete column provided by the utility model, the box-type steel frame 2 is welded by vertical stiffening ribs 21 and inner partitions 22, and the inner partitions 22 are evenly arranged at a certain distance along the longitudinal direction of the vertical stiffening ribs 21.

[0032] See also Figures 6 to 8In an embodiment of a combined box-type high-strength thin-walled steel-reinforced concrete column provided by the utility model, the vertical stiffening ribs 21 constituting the box-type steel frame 2 are C-shaped steels, the limb sides 211 of the C-shaped steels are welded to the inner partition grooves 221, and the limb backs 212 are welded to the cold-bent thin-walled steel panels 1, thereby realizing an effective connection between the cold-bent thin-walled steel panels 1 and the box-type steel frame 2.

[0033] In an embodiment of a combined box-type high-strength thin-walled steel-framed concrete column provided by the utility model, the inner partition 22 constituting the box-type steel frame is a rectangular steel plate with grooves on all sides, and the size of the groove 221 is suitable for the vertical stiffening rib 21 to fit and weld with the groove 221. The inner partition 22 constituting the box-type steel frame 2 is provided with air holes 223 at the four corners and a grouting hole 224 in the middle to facilitate the pouring of the concrete body 3. The inner partition 22 can realize the effective connection between the cold-bent thin-walled steel panel 1 and the box-type steel frame 2.

[0034] See also Figure 2 and Figure 3 In an embodiment of a combined box-type high-strength thin-walled steel-framed concrete column provided by the utility model, a certain number of tie nails 15 are welded longitudinally on the inner side of the cold-bent thin-walled steel panel 1. The cold-bent thin-walled steel panel 1 and the box-type steel frame 2 are made of cold-bent steel of Q355 or above, and the concrete body 3 is high-strength concrete of C50 or above. The tie nails 15 effectively improve the integrity of the steel pipe column and the inner concrete. The use of high-strength steel plates and high-strength concrete can effectively reduce the thickness of the steel plates and reduce the cross-sectional size of the columns.

[0035] In the present invention, all "certain distances" refer to the length necessary to meet the design requirements, that is, the length required to meet the connection and strength requirements. This length is clear to ordinary technicians in this field and can be set as needed.

Claims

1. A combined box-type high-strength thin-walled steel-reinforced concrete column, characterized in that: It includes a cold-bent thin-walled steel panel, a box-shaped steel frame and a concrete body. The cold-bent thin-walled steel panel is composed of three L-shaped steel panels and an L-shaped steel panel with a plug welding groove connected in pairs. A weld gap is reserved at the connection between the two L-shaped steel panels. The box-shaped steel frame is welded by vertical stiffening ribs and inner partitions. The inner partition is a rectangular steel plate with grooves around it. The vertical stiffening ribs are embedded in the grooves around the inner partition. The vertical stiffening ribs and the inner partition are connected at the grooves around the inner partition. The cold-bent thin-walled steel panel is welded to the vertical stiffening rib in the weld gap, the cold-bent thin-walled steel panel has a fitting surface with the inner partition, the cold-bent thin-walled steel panel is welded to the inner partition at the fitting surface, the L-shaped steel panel with plug welding groove is welded to the inner partition through the plug welding groove, and the concrete body is cast in the rectangular cavity formed by splicing the cold-bent thin-walled steel panel and the box-type steel frame.

2. The combined box-type high-strength thin-walled steel-reinforced concrete column according to claim 1 is characterized in that: The inner partitions are evenly arranged at a certain distance along the vertical stiffening ribs.

3. The combined box-type high-strength thin-walled steel-reinforced concrete column according to claim 2 is characterized in that: The L-shaped steel panel with plug welding grooves is provided with the plug welding grooves arranged at a certain distance along the longitudinal direction, the three L-shaped steel panels are welded and connected to the vertical stiffening ribs and the inner partition one by one, the L-shaped steel panel with plug welding grooves is welded and connected to the vertical stiffening ribs, and the L-shaped steel panel with plug welding grooves is welded and connected to the inner partition through the plug welding grooves.

4. The combined box-type high-strength thin-walled steel-reinforced concrete column according to claim 1 is characterized in that: A certain number of tie nails are welded longitudinally on the inner side of the cold-bent thin-walled steel panel.

5. The combined box-type high-strength thin-walled steel-reinforced concrete column according to claim 1 is characterized in that: The vertical stiffening rib is a C-shaped steel, the side limbs of the C-shaped steel are welded to the inner partition groove, and the back of the limbs is welded to the cold-bent thin-walled steel panel.

6. The combined box-type high-strength thin-walled steel-reinforced concrete column according to claim 1 is characterized in that: The inner partition plate is provided with ventilation holes at the four corners and a grouting hole in the middle to facilitate the pouring of the concrete body.

7. The combined box-type high-strength thin-walled steel-reinforced concrete column according to any one of claims 1 to 6, characterized in that: The cold-bent thin-walled steel panel and the box-shaped steel frame are made of cold-bent steel of Q355 or above.

8. The combined box-type high-strength thin-walled steel-reinforced concrete column according to any one of claims 1 to 6, characterized in that: The concrete body is high-strength concrete above C50.

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