CN111962689A - Rigid connection node between box steel column and concrete column - Google Patents
Rigid connection node between box steel column and concrete column Download PDFInfo
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- CN111962689A CN111962689A CN202010970464.0A CN202010970464A CN111962689A CN 111962689 A CN111962689 A CN 111962689A CN 202010970464 A CN202010970464 A CN 202010970464A CN 111962689 A CN111962689 A CN 111962689A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a rigid connection node between a box steel column and a concrete column, which comprises the box steel column, the concrete column and a steel surrounding hoop, wherein longitudinal ribs of the concrete column are arranged in the concrete column, the steel surrounding hoop comprises a sealing plate and a rectangular frame plate, the box steel column, the sealing plate and the rectangular frame plate are sequentially welded, a plurality of toothed plates are welded on each frame of the rectangular frame plate, the toothed plates on each frame are distributed among the longitudinal ribs of the concrete column at intervals, the toothed plates are welded with the adjacent longitudinal ribs of the concrete column, slurry overflow holes positioned at the bottom of the box steel column are formed in the sealing plate, and overflow holes are formed in the side wall of the box steel column. Compared with the prior art, the invention has the advantages of strong bearing capacity, large lateral stiffness resistance, large tensile strength and the like.
Description
Technical Field
The invention relates to a column connecting node, in particular to a rigid connecting node between a box steel column and a concrete column.
Background
With the continuous development of social economy, the requirements of people on the using function of buildings are continuously changed, so that the original structure needs to be reinforced and modified. The steel structure is greatly used in the reconstruction and reinforcement project due to the advantages of light weight, high strength, convenient construction and less wet operation. The steel column is required to be additionally arranged on an original concrete column at the moment when the building is subjected to floor adding or roof space adding and the like in the reinforcement engineering, the conventional method of the structure is to hinge the connecting part of the steel column and the concrete column, the method is simple, convenient and quick, the lateral rigidity of the added steel structure layer is lower, the displacement under the action of horizontal load is larger, and the chemical anchor bolt at the position of the steel column base is at the risk of being pulled out under the action of the horizontal load.
The prior art also provides some solutions, and Chinese patent CN201920010404.7 proposes a box-shaped steel column base rigid connection node, wherein a box-shaped steel column is erected on a reinforced concrete foundation, grooves are formed in four side wall plates of the box-shaped steel column, a cross stiffening plate is inserted to penetrate through a box-shaped steel column body so as to solve the force transmission rigidity of the column base node, and the four side wall plates and a column bottom plate of the box-shaped steel column can be ensured not to be locally bent, and stiffening ribs are arranged at four corners of the box-shaped steel column, so that a rigid connection column base structure meeting design conditions is obtained, the construction can be simplified, steel is saved, and the rigid connection node has good economic benefits.
However, there are three problems with this patent:
firstly, the plane size of the connecting node is large, the connecting node is only suitable for column base positions, and for an upper structure, the connecting node cannot be adopted due to building space requirements; secondly, the connecting node is connected with a lower concrete structure through anchor bolts and shear keys, and the anchor bolts and the shear keys are not effectively connected with longitudinal bars of the concrete column, so that the top of the concrete column is limited to restrain the box-type steel column, and the rigid connection effect on mechanics cannot be met; thirdly, the box steel column bears the pulling force under the horizontal earthquake effect, and when the bonding of crab-bolt and concrete column was not enough, the crab-bolt had the risk of pulling out to lead to the box steel column to take place the continuity and collapse.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a rigid connection node between a box steel column and a concrete column, which has strong bearing capacity, high lateral stiffness and high tensile strength.
The purpose of the invention can be realized by the following technical scheme:
a rigid connection node between a box steel column and a concrete column comprises the box steel column, the concrete column and a steel surrounding hoop, wherein longitudinal ribs of the concrete column are arranged in the concrete column, the steel surrounding hoop comprises a sealing plate and a rectangular frame plate, the box steel column, the sealing plate and the rectangular frame plate are welded in sequence, a plurality of toothed plates are welded on each frame of the rectangular frame plate, the toothed plates on each frame are distributed among the longitudinal ribs of the concrete column at intervals, the width of each toothed plate is equal to the width of a gap between the longitudinal ribs of the concrete column, and the toothed plates of the concrete column are welded with the adjacent longitudinal ribs of the concrete column;
the welding mode adopts full penetration welding, the sealing plate is provided with a grout overflow hole positioned at the bottom of the box-type steel column, the toothed plate is provided with a grout overflow hole, the side wall of the box-type steel column is provided with an overflow hole for judging whether the pouring height of the concrete of the box-type steel column reaches the height of the overflow hole, the concrete is poured from the edge of the top end of the concrete column, the concrete overflows from bottom to top, when the concrete column is filled densely, the concrete passes through the grout overflow hole on the sealing plate and enters the box-type steel column, and when the concrete in the box-type steel column reaches the overflow hole, the concrete can be found in time through the overflow hole and stops pouring;
the steel hoop can directly transmit the internal force of the box type steel column to the concrete column, the connection between the box type steel column and the concrete column is strengthened, the bearing capacity of the top of the concrete column is increased, and the uniformity transmission of rigidity and bearing capacity between the box type steel column and the concrete column is realized.
Further, said overflowPulp and its production processThe quantity in hole is 1 or a plurality of, and a plurality of excessive thick liquid hole evenly distributed are in box steel column bottom below, and the concrete of being convenient for flows to box steel column bottom from concrete column is even for the concrete column packing is closely knit, and rigidity is big.
Furthermore, stiffening ribs are welded between the sealing plate and the box-type steel column, the horizontal rigidity and the vertical rigidity of the box-type steel column are further improved, and the thickness of each stiffening rib is not less than 0.7 time of that of the side wall of the box-type steel column.
Further, the rectangle frame board form by 4 connecting plate welding, the pinion rack welding on the connecting plate, constitute 4 comb plates, 4 comb plate welding together constitute the cuff, the cuff with seal the board welding together, constitute the steel and enclose the hoop.
The connecting plates are rectangular, and the connecting plates are provided with 45-degree chamfer angles at the welded vertex angles, so that the weldability of two adjacent connecting plates is ensured.
Furthermore, the shape of the sealing plate is the same as that of the top end of the concrete column, the hoop effect of the steel hoop is enhanced, and meanwhile, the arrangement and welding of the stiffening ribs are facilitated.
Furthermore, the length of the toothed plate on the frame is gradually reduced from two ends of the frame to the center of the frame, so that the uniformity of rigidity change in the range of the connection area of the concrete column and the box-type steel column is ensured.
Furthermore, the height of the overflow hole from the bottom of the box-shaped steel column is 1.5 times of the side length of the cross section of the box-shaped steel column, the aperture of the overflow hole is not more than 10mm, and the damage to the box-shaped steel column is reduced;
the maximum particle size of the stone aggregate in the common concrete is 30mm, so the aperture of the grout overflow hole is not more than 30mm, and the fluidity of the concrete is ensured.
Furthermore, the length of the toothed plates is not less than 10d, the thickness of the toothed plates is between 0.5d and 0.8d, the height difference of 2 adjacent toothed plates on the connecting plate is not less than 3d, and d is the diameter of the cross section of the longitudinal bar of the concrete column;
in order to ensure the weldability between the connecting plate and the toothed plate, the thickness of the connecting plate is not less than the thickness of the toothed plate and is not less than 0.7 time of the thickness of the sealing plate.
Furthermore, the toothed plate and the concrete column longitudinal rib are welded in a single-side mode, the single-side welding length of a welding seam between the toothed plate and the concrete column longitudinal rib is not smaller than 10d, the connecting effect of the toothed plate and the concrete column longitudinal rib is guaranteed, and the welding seam cannot be torn and damaged under the action of external force.
Compared with the prior art, the invention has the following beneficial effects:
(1) the steel hoop is connected with the box steel column and the concrete column through the steel hoop, the steel hoop comprises a sealing plate, a rectangular frame plate and a toothed plate which are sequentially welded, the toothed plate and the rectangular frame plate are welded together to form a hoop, the hoop and the sealing plate are welded together to form the steel hoop, the toothed plate and longitudinal ribs of the concrete column are arranged in a staggered mode and welded together, the box steel column and the sealing plate are welded together, the steel hoop realizes the uniform transmission of rigidity and bearing capacity between the box steel column and the concrete column, the bearing capacity of the top end of the concrete column and the lateral rigidity and tensile strength of a node are improved, meanwhile, the sealing plate is provided with a grout overflow hole, the side wall of the box steel column is provided with an overflow hole, concrete is poured from the top end of the concrete column to the bottom end of the box steel column, the compactness of the concrete column and the continuity of the transmission of the force and the rigidity between the concrete column and, plastic hinge is avoided;
(2) stiffening ribs are welded between the sealing plate and the box-type steel column, so that the lateral stiffness and the tensile strength of the connecting joint are further improved;
(3) according to the invention, 4 connecting plates are welded to form a rectangular frame plate, the toothed plates are welded on the connecting plates to form comb plates, the 4 comb plates are welded successively, so that the construction is convenient, the length of the toothed plates on the frame is gradually decreased from two ends of the frame to the center of the frame, and the uniformity of rigidity change in the range of the connecting area of the concrete column and the box-type steel column is ensured;
(4) the invention adopts rectangular connecting plates, and the connecting plates are provided with 45-degree inverted right angles at the welding vertex angles, so that the weldability of two adjacent connecting plates is ensured;
(5) the toothed plate is provided with the slurry overflow hole, so that concrete overflow is facilitated, and the concrete in the concrete column is ensured to be filled compactly;
(6) the shape of the sealing plate arranged in the invention is the same as that of the top end of the concrete column, thus the hoop effect of the steel hoop is enhanced, and the arrangement and welding of the stiffening rib are facilitated.
Drawings
FIG. 1 is a front view of the present invention;
3 FIG. 32 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 31 3; 3
FIG. 3 is a cross-sectional view B-B of FIG. 1;
FIG. 4 is a cross-sectional view C-C of FIG. 1;
FIG. 5 is a front view of the steel shroud;
FIG. 6 is a cross-sectional view taken along line D-D of FIG. 5;
FIG. 7 is a front view of the comb plate;
FIG. 8 is a cross-sectional view E-E of FIG. 7;
FIG. 9 is a front view of the connection plate;
FIG. 10 is a top view of the connection plate;
the reference numbers in the figures illustrate:
1. the concrete column comprises a box-type steel column, 2 concrete columns, 3 steel hoops, 31 toothed plates, 32 connecting plates, 33 sealing plates, 4 stiffening ribs, 5 concrete column longitudinal ribs, 6 grout overflow holes and 7 overflow holes.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
A rigid connection node between a box steel column and a concrete column comprises the box steel column 1, the concrete column 2, the concrete column 5, the box 6, the steel hoop 3, a sealing plate 33 and a rectangular frame plate, wherein the box steel column 1, the sealing plate 33 and the rectangular frame plate are welded in sequence, 4 stiffening ribs 4 are symmetrically welded between the sealing plate 33 and the box steel column 1, the thickness of the stiffening rib 4 is not less than 0.7 time of the thickness of the side wall of the box steel column 1, the horizontal rigidity and the vertical rigidity of the box steel column 1 are further improved, the rectangular frame plate is formed by welding 4 connecting plates 32, 4 toothed plates 31 are welded on each connecting plate 32 to form a comb plate, 4 comb plate welding hoops are formed by welding the 4 comb plates, the steel hoop 3 is formed by welding with the hoop plate 33, 4 toothed plates 31 on each connecting plate 32 are distributed among the longitudinal ribs 5 of the concrete column at intervals, each toothed plate 31 is welded with two adjacent concrete column longitudinal bars 5;
4 grout overflow holes 6 positioned at the bottom of the box steel column 1 are symmetrically formed in the sealing plate 33, the toothed plate 31 is also provided with the grout overflow holes 6 facilitating the flowing of concrete, and the aperture of each grout overflow hole 6 is not more than 30mm, so that the flowability of the concrete is ensured;
the overflow hole 7 is formed in the side wall of the box-type steel column 1 and used for judging whether the pouring height of concrete of the box-type steel column 1 reaches the height of the overflow hole 7, the height of the overflow hole 7 from the bottom of the box-type steel column 1 is 1.5 times of the side length of the cross section of the box-type steel column 1, the aperture of the overflow hole 7 is not larger than 10mm, and damage to the box-type steel column 1 is reduced; the steel hoop 3 can directly transmit the internal force of the box type steel column 1 to the concrete column 2, the connection between the box type steel column 1 and the concrete column 2 is enhanced, the bearing capacity of the top of the concrete column 2 is increased, and the uniformity transmission of the rigidity and the bearing capacity between the box type steel column 1 and the concrete column 2 is realized.
The toothed plate 31 and the concrete column longitudinal rib 5 are welded in a single-side mode, the single-side welding length of a welding seam between the toothed plate 31 and the concrete column longitudinal rib 5 is not smaller than 10d, the connecting effect of the toothed plate 31 and the concrete column longitudinal rib 5 is guaranteed, and the welding seam cannot be torn or damaged under the action of external force.
As shown in fig. 9, the connecting plates 32 are rectangular, 45-degree chamfer angles are formed at the welding top corners of the connecting plates 32, so that the weldability of two adjacent connecting plates 32 is ensured, the length of the 2 toothed plates 31 on the outer sides of the connecting plates 32 is greater than that of the 2 toothed plates 31 on the inner sides, and the uniformity of rigidity change in the range of the connecting area between the concrete column 2 and the box-type steel column 1 is ensured; the length of the toothed plate 31 is not less than 10d, the thickness of the toothed plate 31 is between 0.5d and 0.8d, the height difference of 2 adjacent toothed plates 31 on the connecting plate 32 is not less than 3d, wherein d is the diameter of the cross section of the concrete column longitudinal rib 5, and in order to ensure the weldability between the connecting plate 32 and the toothed plate 31, the thickness of the connecting plate 32 is not less than the thickness of the toothed plate 31 and is not less than 0.7 times of the thickness of the sealing plate 33.
The shape of the sealing plate 33 is the same as that of the top end of the concrete column 2, so that the hoop effect of the steel hoop 3 is enhanced, and meanwhile, the arrangement and welding of the stiffening ribs 4 are facilitated.
Concrete is poured from the edge of the side edge of the top end of the concrete column 2, the concrete overflows from bottom to top, the concrete passes through the grout overflow hole 6 in the sealing plate 33 to enter the box steel column 1 after the concrete column 2 is filled with the concrete, and when the concrete in the box steel column 1 reaches the overflow hole 7, the concrete can be found in time through the overflow hole 7 and pouring is stopped.
The embodiment provides a rigid connection node between a box steel column and a concrete column, the box steel column 1 is connected with the concrete column 2 through a steel hoop 3, the steel hoop 3 has a hoop effect, the uniformity transmission of rigidity and bearing capacity between the box steel column 1 and the concrete column 2 is realized, the bearing capacity on the top end of the concrete column 2 and the lateral stiffness and the tensile strength of the node are improved, meanwhile, concrete overflows to the bottom of the box steel column 1 from bottom to top during pouring, the compactness of concrete column 2 pouring and the continuity of force and rigidity transmission between the concrete column 2 and the box steel column 1 are ensured, and plastic hinge is avoided.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A rigid connection node between a box steel column and a concrete column comprises the box steel column (1) and the concrete column (2), wherein a concrete column longitudinal rib (5) is arranged in the concrete column (2), it is characterized by also comprising a steel surrounding hoop (3), wherein the steel surrounding hoop (3) comprises a sealing plate (33) and a rectangular frame plate, the box-type steel column (1), the sealing plate (33) and the rectangular frame plate are welded in sequence, a plurality of toothed plates (31) are welded on each frame of the rectangular frame plate, and a plurality of toothed plates (31) on each side frame are distributed among the concrete column longitudinal bars (5) at intervals, the toothed plate (31) is welded with an adjacent concrete column longitudinal rib (5), the sealing plate (33) is provided with a slurry overflow hole (6) located at the bottom of the box-type steel column (1), and the side wall of the box-type steel column (1) is provided with an overflow hole (7).
2. The rigid connection joint between a box steel column and a concrete column according to claim 1, wherein a stiffening rib (4) is welded between the sealing plate (33) and the box steel column (1).
3. A rigid connection node between a box steel column and a concrete column according to claim 1, characterized in that the rectangular frame plate is formed by welding 4 connecting plates (32), and the toothed plate (31) is welded on the connecting plates (32).
4. A rigid connection node between a box steel column and a concrete column according to claim 3, characterized in that the connection plates (32) are rectangular, and the connection plates (32) are chamfered at 45 ° at the welded top corners thereof.
5. The rigid connection node between a box steel column and a concrete column according to claim 1, wherein the length of the toothed plate (31) on the frame is gradually decreased from the two ends of the frame to the center of the frame.
6. The rigid connection node between a box steel column and a concrete column according to claim 1, characterized in that the toothed plate (31) is provided with grout holes (6).
7. A rigid connection node between a box steel column and a concrete column according to claim 1, characterized in that the shape of the closure plate (33) is the same as the shape of the top end of the concrete column (2).
8. The rigid connection joint between the box-type steel column and the concrete column according to claim 1, wherein the height of the overflow hole (7) from the bottom of the box-type steel column (1) is 1.5 times of the side length of the cross section of the box-type steel column (1), and the aperture of the overflow hole (7) is not more than 10 mm.
9. The rigid connection node between the box steel column and the concrete column according to claim 1, wherein the length of the toothed plate (31) is not less than 10d, and the thickness of the toothed plate is between 0.5d and 0.8d, wherein d is the cross-sectional diameter of the longitudinal rib (5) of the concrete column.
10. The rigid connection node between a box steel column and a concrete column according to claim 1, wherein the number of the grout holes (6) is 1 or more, and the plurality of grout holes (6) are uniformly distributed below the bottom of the box steel column (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970464.0A CN111962689A (en) | 2020-09-16 | 2020-09-16 | Rigid connection node between box steel column and concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970464.0A CN111962689A (en) | 2020-09-16 | 2020-09-16 | Rigid connection node between box steel column and concrete column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111962689A true CN111962689A (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010970464.0A Pending CN111962689A (en) | 2020-09-16 | 2020-09-16 | Rigid connection node between box steel column and concrete column |
Country Status (1)
| Country | Link |
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| CN (1) | CN111962689A (en) |
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2020
- 2020-09-16 CN CN202010970464.0A patent/CN111962689A/en active Pending
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