Node structure for connecting reinforcing steel bar and concrete filled steel tubular column
By configuring node structures, including connecting plates, node longitudinal reinforcement, and stirrups, in the connection between reinforced steel and steel-concrete composite columns, the problem of weak connection is solved, the stability and load-bearing capacity of the structure are improved, and local instability is prevented.
Patent Information
- Application Number
- CN202520059988.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-10
AI Technical Summary
The existing steel reinforcement is not firmly connected to the steel-concrete composite column, resulting in slow construction progress and insufficient structural integrity and stability.
The structure employs a joint structure comprising concrete-filled steel tubular columns, upper longitudinal reinforcement of slabs, upper longitudinal reinforcement of beams, stirrups at joints, lower longitudinal reinforcement of slabs, joint longitudinal reinforcement, lower longitudinal reinforcement of beams, load-bearing pins, upper inner ring slabs, and lower outer ring slabs. By configuring the connecting slabs, joint longitudinal reinforcement, and stirrups, the structural stability and load-bearing capacity are enhanced, and stiffening ribs are configured around the concrete-filled steel tubular columns to increase rigidity.
It improves the connection stability and structural integrity of reinforced concrete columns, enhances the load-bearing capacity of the structure, and strengthens its ability to prevent local instability.
Smart Images
Figure CN223880522U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building engineering, specifically is a node structure for the connection of steel bars and steel pipe concrete columns. BACKGROUND
[0002] With the continuous development of economy, the demand for building space in modern society increases, since the steel pipe in the steel pipe concrete column has high strength and good ductility, and the steel bars can enhance the tensile performance of the concrete part in the structure, therefore, the node method process for connecting the steel bars and the steel pipe concrete column is applied more and more in buildings. In the existing node structure, because the steel bars have small spacing, the connection is not firm and the structural system has high stress performance requirements, how to realize the reasonable connection of the steel bars and the steel pipe concrete column becomes a difficulty in such engineering construction. Therefore, an optimized connection node structure is needed to improve the structural stress performance, enhance the stability and integrity of the structure. SUMMARY
[0003] In view of the existing problems of the above-mentioned steel bar and steel pipe column connection mode, the utility model provides a node structure for connecting steel bars and steel pipe concrete columns, which solves the problems of slow construction progress caused by multiple steel bar rows and small spacing, and the problems of unfirm connection and unsatisfied structural integrity.
[0004] The technical solution for achieving the purpose of the utility model is as follows:
[0005] A node structure for connecting steel bars and steel pipe concrete columns, characterized by comprising: a steel pipe concrete column, upper layer longitudinal bars on a plate, upper layer longitudinal bars on a beam, node stirrups, lower layer longitudinal bars on the plate, node longitudinal bars, lower layer longitudinal bars on the beam, load-bearing pins, an upper layer inner ring plate located on the inner side of the steel pipe concrete column, an upper layer outer ring plate located on the outer side of the steel pipe concrete column, and a lower layer outer ring plate.
[0006] The upper layer outer ring plate and the upper layer inner ring plate are coplanar, and one row of upper layer longitudinal bars on the beam is arranged on the upper layer outer ring plate in the upward direction and the downward direction, and the upper layer longitudinal bars on the beam are arranged along the first direction of the radial direction of the steel pipe concrete column.
[0007] In the second direction perpendicular to the first direction, the upper layer outer ring plate is provided with the upper layer longitudinal bars on the plate on the upper part, and the upper layer longitudinal bars on the plate are fixed with the upper layer outer ring plate and the upper layer longitudinal bars on the beam.
[0008] The lower layer longitudinal bars on the beam are arranged in two rows along the first direction, and the node longitudinal bars are welded at the end of the upper first row of lower layer longitudinal bars on the beam; the lower second row of lower layer longitudinal bars on the beam are fixed on the lower layer outer ring plate.
[0009] The through beam waist bars are symmetrically arranged in the first direction and are fixed with the load-bearing pins; the lower layer longitudinal bars on the plate are arranged in the second direction, and the lower layer longitudinal bars on the plate are connected with the through beam waist bars.
[0010] The load-bearing pin is located between the upper outer ring plate and the lower outer ring plate, and is inserted into the concrete-filled steel tubular column along a first direction;
[0011] The upper ends of the multiple node longitudinal reinforcements are connected with the upper longitudinal reinforcements of the second row of beams, and the lower ends are connected with the lower longitudinal reinforcements of the second row of beams.
[0012] The node stirrup is perpendicular to the node longitudinal reinforcement and is fixed.
[0013] Compared with the prior art, the utility model has the following remarkable advantages:
[0014] (1) The connection plate is used to connect the outer ring plate and the reinforcement, so that the stability of the node structure is enhanced.
[0015] (2) The node longitudinal reinforcement and the stirrup are arranged between the upper and lower outer ring plates, so that the structural bearing capacity is improved.
[0016] (3) The stiffening rib is arranged around the concrete-filled steel tubular column, so that the structural rigidity is enhanced, and local instability is prevented.
[0017] (4) The uniformly arranged studs can prevent sliding deformation. DETAILED DESCRIPTION
[0018] Figure 1 It is the overall structure schematic diagram of the utility model.
[0019] Figure 2 It is the central axis section view of the figure.
[0020] Figure 3 It is Figure 1 The section view of the middle upper inner and outer ring plate.
[0021] Figure 4 It is Figure 1 The section view of the middle lower inner and outer ring plate.
[0022] Figure 5 It is Figure 1 The section view of the middle part of the concrete-filled steel tubular column.
[0023] Figure 6 It is the large sample drawing of the upper outer ring plate.
[0024] Figure 7 It is the large sample drawing of the lower outer ring plate.
[0025] Figure 8 It is the section view of the load-bearing pin.
[0026] 1, first node plate; 2, steel pipe concrete column; 3, second node plate; 4, upper layer inner ring plate; 5, third node plate; 6, plate steel bar connecting plate; 7, upper layer outer ring plate; 8-1, bearing pin upper flange; 8-2, bearing pin lower flange; 9, lower layer outer ring plate; 10, stud; 11, bearing pin; 12, node longitudinal reinforcement; 13, node stirrup; 14, beam upper layer longitudinal reinforcement; 15, beam lower layer longitudinal reinforcement; 16, plate upper layer longitudinal reinforcement; 17, plate lower layer longitudinal reinforcement; 18, bearing pin web; 19, connecting plate; 20, beam waist reinforcement; 21, stiffening rib DETAILED DESCRIPTION
[0027] The application is further described below in combination with the drawings:
[0028] The application discloses a node structure for connecting steel bars and steel pipe concrete columns.
[0029] Reference Figure 1 and Figure 2 The structure is composed of a steel pipe concrete column 2, an upper layer inner ring plate 4, an upper layer outer ring plate 7, plate upper layer longitudinal reinforcement 16, beam upper layer longitudinal reinforcement 14, stud 10, node stirrup 13, bearing pin 11, plate steel bar connecting plate 6, plate lower layer longitudinal reinforcement 17, node longitudinal reinforcement 12, lower layer outer ring plate 9 and beam lower layer longitudinal reinforcement 15. The steel pipe concrete column 2 is internally provided with the upper layer inner ring plate 4, and externally provided with the upper layer outer ring plate 7, stiffening rib 21 and lower layer outer ring plate 9. The beam upper layer longitudinal reinforcement 14 comprises intermediate beam upper layer longitudinal reinforcement 14-1 and through beam upper layer longitudinal reinforcement 14-2, the plate upper layer longitudinal reinforcement 16 comprises intermediate plate upper layer longitudinal reinforcement 16-1 and through plate upper layer longitudinal reinforcement 16-2, the plate lower layer longitudinal reinforcement 17 comprises plate lower layer longitudinal reinforcement 17-1 and plate lower layer longitudinal reinforcement 17-2, the beam lower layer longitudinal reinforcement 15 is provided in two rows, the first row is bound with the node longitudinal reinforcement 12, and the second row comprises intermediate beam lower layer longitudinal reinforcement 15-1 and through beam lower layer longitudinal reinforcement 15-2 and is arranged on the lower layer outer ring plate 9, and the upper layer outer ring plate 7 is provided with one row of beam upper layer longitudinal reinforcement 14 above and below.
[0030] Reference Figure 3 and Figure 6 The upper layer inner ring plate 4 is a circular ring with an inner diameter of 150 mm, the first direction is the horizontal direction of the structure (left-right direction), the upper layer outer ring plate 7 is an octagonal structure with a circular hole in the middle, the outer edge of the upper layer outer ring plate 7 in the first direction in the radial direction of the steel pipe concrete column 2 is 450 mm away from the steel pipe concrete column 2, and the outer edge of the upper layer outer ring plate 7 in the second direction in the radial direction of the steel pipe concrete column 2 (vertical direction) is 450 mm away from the steel pipe concrete column 2. Figure 1 Figure 1 The outer edge of the circular hole is 400mm away from the concrete-filled steel tubular column 2 in the first direction and the second direction, and the inner side of the circular hole is welded to the outer side of the concrete-filled steel tubular column 2. The upper layer of the outer ring plate 4 is arranged in the same plane, and the rigidity of the concrete-filled steel tubular column is enhanced. The upper layer of the beam longitudinal reinforcement 14 is arranged in two rows, and the upper layer of the outer ring plate 4 is arranged in one row above and below. The two rows are arranged as follows: a plurality of intermediate beam upper layer longitudinal reinforcements 14-1 are symmetrically arranged about the concrete-filled steel tubular column 2 in the first direction, and the ends are welded to the upper layer of the outer ring plate 7 by double-sided welding; a plurality of through beam upper layer longitudinal reinforcements 14-2 are symmetrically arranged on both sides of the intermediate beam upper layer longitudinal reinforcement 14-1 in the first direction, and the through beam upper layer longitudinal reinforcement 14-2 is arranged in parallel with the intermediate beam upper layer longitudinal reinforcement 14-1 after being bypassed around the concrete-filled steel tubular column 2 in the middle, and is welded to the upper layer of the outer ring plate 7 by double-sided welding. A plurality of intermediate plate upper layer longitudinal reinforcements 16-1 are symmetrically arranged about the concrete-filled steel tubular column 2 in the second direction, and the intermediate plate upper layer longitudinal reinforcement 16-1 is arranged on the upper layer of the outer ring plate 7. The ends are welded to the connecting plate 19 by double-sided welding, and the connecting plate 19 is welded to the upper layer of the outer ring plate 7; a plurality of through plate upper layer longitudinal reinforcements 16-2 are symmetrically arranged on both sides of the intermediate plate upper layer longitudinal reinforcement 16-1 in the second direction, and the through plate upper layer longitudinal reinforcement 16-2 is arranged in parallel with the intermediate plate upper layer longitudinal reinforcement 16-1 after being bypassed around the concrete-filled steel tubular column 2 in the middle, and is welded to the beam upper layer longitudinal reinforcement 14 and fixed.
[0031] Referring to Figure 4 and Figure 7 The lower layer of the outer ring plate 9 is an octagonal structure with a circular hole in the middle, and the outer edge in the first direction and the second direction of the radial direction of the concrete-filled steel tubular column 2 is 400mm away from the concrete-filled steel tubular column 2, and the inner side of the circular hole is welded to the outer side of the concrete-filled steel tubular column 2. The inner ring closely contacts the concrete-filled steel tubular column 2, and the outer side of the circular hole is uniformly provided with 20 stiffening ribs 21 with a welding length of 100mm in the circumferential direction, to prevent local instability of the concrete-filled steel tubular column 2.
[0032] The beam lower layer longitudinal reinforcement 15 is arranged in two rows in the first direction, and the upper first row of beam lower layer longitudinal reinforcement 15 is welded to the node longitudinal reinforcement 12 at the end. The number of steel bars of the first row of beam lower layer longitudinal reinforcement 15 is the same as the number of node longitudinal reinforcements 12. The second row of beam lower layer longitudinal reinforcement 15 is arranged as follows: a plurality of intermediate beam lower layer longitudinal reinforcements 15-1 are symmetrically arranged about the concrete-filled steel tubular column 2 in the first direction, and the intermediate beam lower layer longitudinal reinforcement 15-1 is arranged on the upper layer of the outer ring plate 9. The ends are welded to the lower layer of the outer ring plate 9 by double-sided welding; a plurality of through beam lower layer longitudinal reinforcements 15-2 are symmetrically arranged on both sides of the intermediate beam lower layer longitudinal reinforcement 15-1 in the first direction, and the through beam lower layer longitudinal reinforcement 15-2 is arranged in parallel with the intermediate beam lower layer longitudinal reinforcement 15-1 after being bypassed around the stiffening rib 21 in the middle, and is welded to the lower layer of the outer ring plate 9 by double-sided welding.
[0033] Referring to Figure 1 and Figure 5, the steel pipe concrete column 2 is uniformly arranged around 20 studs 10. The first direction is symmetrically provided with the through beam waist muscle 20 which bypasses the stud 10 and is connected by the double-sided welded plate steel bar connecting plate 6. The second direction is configured with the double-sided welded plate steel bar connecting plate 6, the end of the plurality of middle plate lower longitudinal bars 17-1 is welded with the beam waist muscle 20; the plurality of plate lower longitudinal bars 17-2 symmetrically arranged on both sides of the plate lower longitudinal bar 17-1 is bound with the beam waist muscle 20, and the end is truncated at the load bearing pin web plate 18. The stud 10 is welded on the outer side of the steel pipe concrete column 2, the diameter is 19mm, the length is 80mm, and the vertical spacing of the upper and lower two circles is 200mm.
[0034] Referring to Figure 1 and Figure 8 , the load bearing pin 11 is 680mm thick and located between the upper outer ring plate 7 and the lower outer ring plate 9, including a load bearing upper pin flange 8-1, a load bearing pin lower flange 8-2, a first node plate 1, a second node plate 3, a third node plate 5, a plate steel bar connecting plate 6 and a load bearing pin web plate 18. The two load bearing pin upper flanges 8-1 are arranged in parallel in the first direction, respectively, the two load bearing pin upper flanges 8-1 are inserted into the steel pipe concrete column 2 from both sides of the steel pipe concrete column 2, the two load bearing pin lower flanges 8-2 are inserted into the steel pipe concrete column 2 from both sides of the steel pipe concrete column 2, the load bearing pin web plate 18 connects the load bearing pin upper flange 8-1, the load bearing pin lower flange 8-2 and the plate steel bar connecting plate 6, and penetrates the steel pipe concrete column 2, the plate steel bar connecting plate 6 is located between the load bearing pin upper flange 8-1 and the load bearing pin lower flange 8-2, the first node plate 1 connects the plate steel bar connecting plate 6 and the load bearing pin lower flange 8-2, the second node plate 3 penetrates the plate steel bar connecting plate 6 to connect the load bearing pin upper flange 8-1 and the load bearing pin lower flange 8-2, and the third node plate 5 connects the load bearing pin upper flange 8-1 and the load bearing pin lower flange 8-2 and is located at the end of the plate steel bar connecting plate 6. The load bearing pin web plate 18 penetrates the steel pipe concrete column 2 and is welded and fixed with the steel pipe concrete column 2.
[0035] Referring to Figure 1 , the node hoop 13 is 12mm in diameter and is located between the load bearing pin upper flange 8-1 and the stud 10, is arranged around the outer side of the steel pipe concrete column 2, and is welded with the node longitudinal bar 12. When welding, the node hoop 13 and the node longitudinal bar 12 should be perpendicular.
[0036] The node longitudinal bar 12 is 20mm in diameter, the upper end of the plurality of node longitudinal bars 12 is welded with the second row of intermediate beam upper longitudinal bars 14-1 and the through beam upper longitudinal bars 14-2, and the lower end is welded with the second row of intermediate beam lower longitudinal bars 15-1 and the through beam lower longitudinal bars 15-2, penetrates the reserved hole of the plate steel bar connecting plate 6, is located between the first node plate 1 and the second node plate 3, is symmetrically arranged about the axis center line of the steel pipe concrete column 2, and the anchoring length of the node longitudinal bar 12 at the node is the key.
Claims
1. A joint structure for connecting a steel bar to a concrete filled steel tubular column, characterized by, The application relates to a steel tube concrete column, a slab upper longitudinal reinforcement, a beam upper longitudinal reinforcement, a joint stirrup, a slab lower longitudinal reinforcement, a joint longitudinal reinforcement, a beam lower longitudinal reinforcement, a bearing pin, an upper inner ring plate located on the inner side of the steel tube concrete column, an upper outer ring plate located on the outer side of the steel tube concrete column and a lower outer ring plate. The upper outer ring plate is coplanar with the upper inner ring plate, and a row of beam upper longitudinal reinforcements is arranged on the upper outer ring plate. In a second direction perpendicular to the first direction, the upper outer ring plate is provided with the slab upper longitudinal reinforcement, and the slab upper longitudinal reinforcement is fixed with the upper outer ring plate and the beam upper longitudinal reinforcement. The beam lower longitudinal reinforcement is arranged in two rows along the first direction, the first row of beam lower longitudinal reinforcements located on the upper part is welded with the joint longitudinal reinforcement at the end, and the second row of beam lower longitudinal reinforcements located on the lower part is fixed on the lower outer ring plate. The first direction is symmetrically provided with the through beam waist reinforcement which is fixed with the bearing pin, and the second direction is arranged with the slab lower longitudinal reinforcement which is connected with the through beam waist reinforcement. The bearing pin is located between the upper outer ring plate and the lower outer ring plate and is inserted into the steel tube concrete column along the first direction. The upper ends of the multiple joint longitudinal reinforcements are connected with the second row of beam upper longitudinal reinforcements, and the lower ends are connected with the second row of beam lower longitudinal reinforcements. The joint stirrup is perpendicular to the joint longitudinal reinforcement and is fixed. The bearing pin comprises a bearing upper pin flange, a bearing pin lower flange, a first joint plate, a second joint plate, a third joint plate, a slab steel bar connecting plate and a bearing pin web.
2. The joint structure for connecting a steel bar to a concrete filled steel tubular column according to claim 1, characterized by, The two bearing pin upper flanges and the two bearing pin lower flanges are arranged in parallel in the first direction, respectively, the two bearing pin upper flanges are inserted into the steel tube concrete column from the two sides of the steel tube concrete column, respectively, the two bearing pin lower flanges are inserted into the steel tube concrete column from the two sides of the steel tube concrete column, respectively, the bearing pin web connects the bearing pin upper flange, the bearing pin lower flange and the slab steel bar connecting plate and penetrates the steel tube concrete column, the slab steel bar connecting plate is located between the bearing upper pin flange and the bearing pin lower flange, the first joint plate connects the slab steel bar connecting plate and the bearing pin lower flange, the second joint plate penetrates the slab steel bar connecting plate and connects the bearing pin upper flange and the bearing pin lower flange, the third joint plate connects the bearing pin upper flange and the bearing pin lower flange and is located at the end of the slab steel bar connecting plate, and the bearing pin web penetrates the steel tube concrete column and is welded and fixed with the steel tube concrete column. The beam upper longitudinal reinforcement comprises intermediate beam upper longitudinal reinforcements and through beam upper longitudinal reinforcements, a plurality of intermediate beam upper longitudinal reinforcements are symmetrically arranged in the first direction about the steel tube concrete column, and the ends are welded with the upper outer ring plate through double-sided welding; a plurality of through beam upper longitudinal reinforcements are symmetrically arranged on the two sides of the intermediate beam upper longitudinal reinforcement in the first direction, the through beam upper longitudinal reinforcement is arranged in parallel with the intermediate beam upper longitudinal reinforcement after bypassing the steel tube concrete column in the middle and is welded with the upper outer ring plate through double-sided welding.
3. The joint structure for connecting a steel bar to a concrete filled steel tubular column according to claim 1, characterized in that, 4. The joint structure for connecting a steel bar to a concrete filled steel tubular column according to claim 1, characterized by, The upper-layer longitudinal bars on the plate include intermediate upper-layer longitudinal bars on the plate and through upper-layer longitudinal bars on the plate; a plurality of intermediate upper-layer longitudinal bars on the plate are symmetrically arranged with respect to the concrete-filled steel tubular column, the intermediate upper-layer longitudinal bars on the plate are located on the upper portion of the upper-layer outer ring plate, the end portions of the intermediate upper-layer longitudinal bars on the plate are welded and fixed with the connecting plate, and the connecting plate is welded with the upper-layer outer ring plate; a plurality of through upper-layer longitudinal bars on the plate are symmetrically arranged on both sides of the intermediate upper-layer longitudinal bars on the plate in the second direction, the through upper-layer longitudinal bars on the plate are arranged in parallel with the intermediate upper-layer longitudinal bars on the plate after being bypassed around the concrete-filled steel tubular column, are overlapped on the upper-layer longitudinal bars on the beam, and are welded and fixed with the upper-layer longitudinal bars on the beam.
5. The joint structure for connecting a steel bar to a concrete filled steel tubular column according to claim 2, wherein The lower-layer longitudinal bars on the plate include intermediate lower-layer longitudinal bars on the plate and lower-layer longitudinal bars on the plate, the end portions of the intermediate lower-layer longitudinal bars on the plate are welded with the beam waist bars, and a plurality of lower-layer longitudinal bars on the plate are symmetrically arranged on both sides of the intermediate lower-layer longitudinal bars on the plate, are tied with the beam waist bars, and are truncated at the bearing pin web plate.
6. The joint structure for connecting a steel bar to a concrete filled steel tubular column according to claim 1, wherein The lower-layer outer ring plate is an octagonal structure with a circular hole in the middle, the outer side of the circular hole is welded with the outer side of the concrete-filled steel tubular column, the inner ring is closely fitted with the concrete-filled steel tubular column, and a plurality of stiffening ribs are uniformly arranged on the outer side of the circular hole in the circumferential direction.
7. The joint structure for connecting a steel bar to a concrete filled steel tubular column according to claim 6, wherein The through beam waist bars symmetrically arranged in the first direction bypass the studs and are connected with the plate steel connecting plate through double-sided welding.
8. The joint structure for connecting a steel bar to a concrete filled steel tubular column according to claim 1, wherein A plurality of studs are uniformly arranged around the concrete-filled steel tubular column.