CN218508664U - Connecting joint of concrete-filled steel tubular column and reinforced concrete beam - Google Patents
Connecting joint of concrete-filled steel tubular column and reinforced concrete beam Download PDFInfo
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- CN218508664U CN218508664U CN202221861657.3U CN202221861657U CN218508664U CN 218508664 U CN218508664 U CN 218508664U CN 202221861657 U CN202221861657 U CN 202221861657U CN 218508664 U CN218508664 U CN 218508664U
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Abstract
The application relates to a connected node of steel core concrete column and reinforced concrete roof beam includes: the steel pipe concrete column, the reinforced concrete beam, the vertical outer-coated steel pipe, the horizontal ring plate, the shear anchor bolt, the vertical stiffening rib and the shear ring; the steel core concrete column includes steel pipe and intussuseption concrete, the reinforced concrete roof beam includes ring beam and straight roof beam, vertical outsourcing steel pipe outsourcing is on the steel pipe, horizontal crown plate and vertical outsourcing steel pipe welded connection, vertical stiffening rib welding is between horizontal crown plate and vertical outsourcing steel pipe, and encircle vertical outsourcing steel pipe setting in proper order, the crab-bolt setting that shears is between adjacent vertical stiffening rib, and in the anchor goes into the ring beam, the welding of shear ring is on the steel pipe, and be connected with the ring beam. The utility model provides a connecting node moves traditional bracket that shears to the roof beam top, can be effectual with the moment of flexure that the concrete filled steel tubular column upper end bore transmit the straight beam of the reinforced concrete roof beam that links to each other with it on, make lower extreme concrete filled steel tubular column basically only undertake the axial force, realize the target of the weak component of strong node.
Description
Technical Field
The application relates to the technical field of building design, in particular to a connecting node of a concrete filled steel tubular column and a reinforced concrete beam.
Background
The steel pipe concrete is a combined structural material formed by filling concrete into a thin-wall circular steel pipe, and is one kind of hoop concrete. The hoop concrete utilizes the transverse reinforcing bars to apply lateral restraint to the compressed concrete, so that the concrete is in a three-dimensional compressed stress state, the generation and development of the longitudinal position column of the concrete are delayed, and the compressive strength and the compressive deformation capacity are improved. The hoop concrete has excellent mechanical properties such as high strength, light weight, high plasticity, fatigue resistance, impact resistance and the like. Compared with a common hoop concrete member, the concrete-filled steel tube also has the advantages of convenience and rapidness in construction and higher economical efficiency. In recent years, steel pipe concrete has been increasingly applied to high-rise building engineering and large-span bridge engineering.
Shear force is generally transmitted between a traditional steel tube concrete column and a reinforced concrete beam through a bearing pin (a through bracket), an annular leg and a shear ring, and bending moment is transmitted through arranging a double beam (a well beam), an annular beam, a wide-width beam or a single reinforcing bar beam. In order to ensure that the hoop effect of the steel pipe on the core concrete is not weakened, tension steel bars cannot be directly welded on the wall of the steel pipe during node design. The traditional nodes transmit bending moment by adjusting the arrangement of stressed steel bars of a reinforced concrete beam to bypass or penetrate through a steel pipe concrete column; the shearing force is transferred through the friction between the concrete beam and the shearing-resistant member, and the aim of the strong-node weak member cannot be well achieved. In order to further strengthen the stress performance of the node, the application provides an improved connecting node of the steel pipe concrete column and the reinforced concrete beam.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an embodiment of the present application provides a connection node of a steel pipe concrete column and a reinforced concrete beam, which moves a traditional shearing-resistant bracket to a beam top, and can effectively transmit a bending moment borne by the upper end of the steel pipe concrete column to a straight beam of the reinforced concrete beam connected with the steel pipe concrete column, so that the steel pipe concrete column at the lower end basically only bears an axial force, and a strong node and a weak member are achieved.
In view of this, according to an embodiment of the present application, there is provided a connection node of a concrete filled steel tubular column and a reinforced concrete beam, including: the steel pipe concrete column, the reinforced concrete beam, the vertical outer-coated steel pipe, the horizontal ring plate, the shear anchor bolt, the vertical stiffening rib and the shear ring;
the steel pipe concrete column comprises a steel pipe and filled concrete;
the reinforced concrete beam comprises a ring beam and a straight beam, the ring beam hoops the steel tube concrete column, and the straight beam horizontally extends outwards from the side surface of the ring beam;
the vertical externally-coated steel pipe is externally coated on the steel pipe of the steel pipe concrete column;
the inner ring of the horizontal ring plate is welded with the outer wall of the vertical externally-wrapped steel pipe;
the vertical stiffening ribs are vertically welded between the horizontal ring plate and the vertical outsourcing steel pipe, and the vertical stiffening ribs are provided with a plurality of stiffening ribs which are arranged around the vertical outsourcing steel pipe in sequence;
the shear anchors are arranged between the adjacent vertical stiffening ribs and penetrate through the horizontal ring plate to be anchored into the ring beam of the reinforced concrete beam;
the shear ring is welded on a steel pipe of the steel pipe concrete column and is connected with a ring beam of the reinforced concrete beam.
According to the embodiment of the application, the vertical outsourcing steel pipe, the horizontal ring plate and the vertical stiffening rib are welded into a whole.
According to the embodiment of the application, the wall thickness of the vertical outsourcing steel pipe is 3-5mm larger than that of the steel pipe wall of the concrete-filled steel pipe column.
According to the embodiment of the application, the horizontal ring plate corresponds to the shear-resistant anchor bolt is provided with an anchor bolt hole in advance, so that the shear-resistant anchor bolt penetrates through the horizontal ring plate and is anchored into the ring beam of the reinforced concrete beam.
According to the embodiment of the application, the shear anchor bolt comprises a common anchor bolt, a planting bar or a mechanical and chemical anchor bolt.
According to an embodiment of the application, the vertical stiffeners are triangular or trapezoidal steel plates.
According to the embodiment of the application, the wall thickness of the vertical outsourcing steel pipe, the horizontal ring plate and the vertical stiffening rib is the same.
According to the embodiment of the application, the vertical stiffening ribs are connected with the vertical outsourcing steel pipe and the horizontal ring plate through double-sided fillet welds or single-sided fillet welds.
According to the embodiment of the application, the shear ring is formed by bending and processing ribbed steel bars or plain round steel bars and is welded on the outer wall of the steel pipe.
According to an embodiment of the application, the connection node comprises a plurality of shear rings arranged parallel to each other from top to bottom, or the connection node comprises a helical shear ring.
According to the embodiment of the application, the type of the concrete filled in the concrete filled steel tubular column is the type of the concrete specified in the current design specifications of the reinforced concrete structure.
According to the embodiment of the application, the steel tube in the steel tube concrete column is a steel tube with the thickness calculated according to the axial force and the slenderness ratio of the column, and the manufacturing process can adopt hot processing, cold processing or welding.
According to the embodiment of the application, the longitudinal stressed steel bars in the straight beam of the reinforced concrete beam are bent at the node and are welded and fixed with the annular steel bars in the annular beam.
According to the embodiment of the application, the hoop reinforcing steel bars of the ring beam are applied with pretension force so as to realize tight hoop of the concrete-filled steel tubular column.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) The utility model moves the traditional shearing-resistant corbel to the top of the beam, can effectively transmit the bending moment born by the upper end of the steel pipe concrete column to the straight beam of the reinforced concrete beam connected with the steel pipe concrete column, and leads the steel pipe concrete column at the lower end to basically bear only axial force;
(2) The horizontal ring plate, the vertical stiffening ribs and the vertical externally-coated steel pipes can effectively increase the ultimate bending resistance of the reinforced concrete beam at the node, and strong node and weak member is realized;
(3) The main parts of the nodes of the vertical externally-coated steel tube, the horizontal ring plate, the vertical stiffening rib and the shear anchor bolt can be welded and connected with the steel tube of the concrete filled steel tubular column in a factory, so that the site resources are not occupied, the error caused by site construction is avoided by standardized manufacture, and the precision is further ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description only relate to some embodiments of the present application and are not limiting on the present application.
FIG. 1 is a schematic view of a joint of a concrete filled steel tubular column and a reinforced concrete beam;
FIG. 2 is a schematic view of a concrete filled steel tubular column welded with shear rings;
fig. 3 is a schematic top view of fig. 2.
Description of reference numerals:
1-filling concrete, 2-steel pipes, 3-vertical externally-coated steel pipes, 4-horizontal ring plates, 5-shear anchors, 6-vertical stiffening ribs, 7-shear rings, 8-ring beams and 9-straight beams.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.
Fig. 1 is a schematic view of a connection node of a steel pipe concrete column and a reinforced concrete beam, fig. 2 is a schematic view of a steel pipe concrete column welded with a shear ring, and fig. 3 is a schematic view from above of fig. 2.
Referring to fig. 1 to 3, in the embodiment of the present invention, the joint between the steel pipe concrete column and the reinforced concrete beam may include a steel pipe concrete column, a reinforced concrete beam, a vertical outer-wrapped steel pipe 3, a horizontal ring plate 4, a shear anchor 5, a vertical stiffener 6, and a shear ring 7.
The steel tube concrete column can comprise a steel tube 2 and internal filling concrete 1, wherein the internal filling concrete 1 is filled in the steel tube 2; the reinforced concrete beam may include a ring beam 8 and a straight beam 9, the ring beam 8 hooping the steel pipes 2 of the steel pipe concrete column, the straight beam 9 radiating outward horizontally from the side of the ring beam 8, as shown in fig. 1.
As shown in fig. 1, this vertical outsourcing steel pipe 3 can the outsourcing on steel pipe 2 of steel core concrete column, the inner ring of horizontal crown plate 4 and the outer wall welded connection of this vertical outsourcing steel pipe 3, the vertical welding of this vertical stiffening rib 6 is between horizontal crown plate 4 and vertical outsourcing steel pipe 3, and this vertical stiffening rib 6 can have a plurality ofly, encircles this vertical outsourcing steel pipe 3 setting in proper order. Shear anchors 5 may be provided between adjacent vertical stiffeners 6 and anchored through the horizontal ring plates 4 into the ring beams 8 of the reinforced concrete beam.
As shown in fig. 2, the shear ring 7 may be welded to the steel pipe 2 of the steel concrete column and coupled to the ring beam 8 of the reinforced concrete beam.
Further, the vertical outer-wrapped steel pipe 3, the horizontal ring plate 4 and the vertical stiffening ribs 6 are integrally formed through welding.
Furthermore, the wall thickness of the vertical outer wrapping steel tube 3 is 3-5mm larger than that of the steel tube 2 of the steel tube concrete column.
Further, the horizontal ring plate 4 is pre-opened with anchor bolt holes corresponding to the shear anchors 5, so that the shear anchors 5 pass through the horizontal ring plate 4 and are anchored into the ring beam 8 of the reinforced concrete beam.
Further, the shear anchor 5 may be one of a general anchor, a bar-planting or a mechanical or chemical anchor. If the shear anchor bolt 5 adopts a common anchor bolt, a backing plate needs to be additionally arranged when the bolt is installed.
Further, the vertical stiffening ribs 6 can be triangular or trapezoidal steel plates, and the gradient of the vertical stiffening ribs 6 is 45 degrees when the triangular steel plates are adopted.
Further, the wall thickness of the vertical steel-clad pipe 3, the horizontal ring plate 4 and the vertical stiffening ribs 6 can be the same.
Further, the vertical stiffeners 6 may be connected to the vertical clad steel pipes 3 and the horizontal ring plates 4 by double fillet welds or single fillet welds.
Furthermore, the shear ring 7 is formed by bending a ribbed steel bar or a plain round steel bar and is welded on the outer wall of the steel pipe 2. The shear ring 7 may be a large diameter hot rolled ribbed steel bar.
Further, the connecting node may include a plurality of shear rings 7 arranged in parallel from top to bottom, or a spiral shear ring 7.
Furthermore, the type of the concrete filled in the steel tube concrete column 1 can be the type of the concrete specified in the current design specification of the reinforced concrete structure. The strength of the internal filling concrete 1 can be selected from the concrete model with higher strength, and the steel tube 2 of the steel tube concrete column can effectively improve the brittleness of the high-strength concrete.
Furthermore, the steel tube 2 in the steel tube concrete column is the steel tube 2 with the thickness calculated according to the axial force and the slenderness ratio of the column, the wall thickness is not too large, the stress distribution of the tube wall is prevented from being uneven, the diameter/wall thickness of the steel tube 2 is generally more than 20, and the manufacturing process can adopt hot processing, cold processing or welding.
Furthermore, longitudinal stress steel bars in the straight beam 9 of the reinforced concrete beam are bent at the joints and are welded and fixed with the circumferential steel bars in the ring beam 8. And the thickness of the ring beam 8 should be the same as the width of the straight beam 9.
Furthermore, the hoop reinforcing steel bars of the ring beam 8 are applied with pretension force to realize the tight hoop of the steel pipe concrete column.
Furthermore, a plurality of annular reinforcing steel bars of the annular beam 8 are arranged from inside to outside, and the type of the concrete of the annular beam 8 is the same as that of the straight beam 9.
The utility model discloses a construction steps does: firstly, manufacturing and connecting a steel pipe 2 meeting requirements, a vertical externally-coated steel pipe 3, a horizontal ring plate 4, a shear anchor bolt 5, a vertical stiffening rib 6 and a shear ring 7 in a factory; secondly, manufacturing a ring beam 8 reinforcement cage, and applying prestress; thirdly, manufacturing a reinforcement cage of the straight beam 9, and reliably connecting the reinforcement cage with the reinforcement cage of the ring beam 8; fourthly, manufacturing a reinforcement cage of the concrete-filled steel tubular column; and fifthly, pouring concrete, and putting into use after curing for enough days.
Compared with the prior art, the method can achieve at least the following beneficial effects:
(1) The utility model moves the traditional shearing-resistant corbel to the top of the beam, can effectively transmit the bending moment born by the upper end of the steel pipe concrete column to the straight beam 9 of the reinforced concrete beam connected with the steel pipe concrete column, and ensures that the steel pipe concrete column at the lower end basically only bears axial force;
(2) The horizontal ring plate 4, the vertical stiffening ribs 6 and the vertical externally-coated steel pipes 3 can effectively increase the ultimate bending resistance of the reinforced concrete beam at the node, and strong node and weak member is realized;
(3) The main parts of the nodes of the vertical externally-coated steel tube 3, the horizontal ring plate 4, the shear-resistant anchor bolt 5 and the vertical stiffening rib 6 can be welded with the steel tube 2 of the concrete-filled steel tube column in a factory, so that the site resources are not occupied, the error caused by site construction is avoided by standardized manufacturing, and the precision is further ensured.
The above description is only an exemplary embodiment of the present application and is not intended to limit the scope of the present application, which is defined by the appended claims.
Claims (10)
1. The utility model provides a connected node of steel core concrete column and reinforced concrete roof beam which characterized in that includes:
the steel pipe concrete column comprises a steel pipe and filled concrete;
the reinforced concrete beam comprises a ring beam and a straight beam, the ring beam hoops the concrete-filled steel tube column, and the straight beam horizontally extends outwards from the side face of the ring beam;
the vertical steel pipe is wrapped outside the steel pipe of the concrete-filled steel pipe column;
the inner ring of the horizontal ring plate is welded and connected with the outer wall of the vertical externally-wrapped steel pipe;
the vertical stiffening ribs are vertically welded between the horizontal ring plate and the vertical outsourcing steel pipe, and a plurality of vertical stiffening ribs are arranged around the vertical outsourcing steel pipe in sequence;
the shear-resistant anchor bolts are arranged between the adjacent vertical stiffening ribs and penetrate through the horizontal ring plate to be anchored into the ring beam of the reinforced concrete beam;
and the shear ring is welded on a steel pipe of the steel pipe concrete column and is connected with the ring beam of the reinforced concrete beam.
2. A joint of a steel core concrete column and a reinforced concrete beam as recited in claim 1, wherein said vertical outer cladding steel pipe, horizontal ring plate, vertical stiffeners are integrated by welding.
3. A joint of a steel tubular concrete column and a reinforced concrete beam as recited in claim 1, wherein the wall thickness of said vertical overclad steel tube is 3-5mm greater than the wall thickness of the steel tube of the steel tubular concrete column.
4. The joint for connecting a concrete filled steel tubular column to a reinforced concrete beam according to claim 1, wherein the horizontal ring plate is pre-bored with bolt holes corresponding to the shear bolts so that the shear bolts are anchored into the ring beam of the reinforced concrete beam through the horizontal ring plate.
5. A joint for connecting a concrete filled steel tubular column to a reinforced concrete beam according to claim 1, wherein said shear anchors comprise conventional anchors, planting bars or mechanical or chemical anchors.
6. A joint for a steel core concrete column to a reinforced concrete beam as recited in claim 1, wherein said vertical stiffeners are triangular or trapezoidal steel plates.
7. A joint for a concrete filled steel tubular column to a reinforced concrete beam as recited in claim 1, wherein the vertical outer cladding steel tubes, the horizontal ring plate and the vertical stiffeners have the same wall thickness.
8. A joint for a steel core concrete column to a reinforced concrete beam as recited in claim 1, wherein said vertical stiffeners are connected to said vertical overclad steel tubes and horizontal ring plate by double fillet welds or single fillet welds.
9. A joint of a steel tubular concrete column and a reinforced concrete beam as recited in claim 1, wherein said shear ring is formed by bending a ribbed steel bar or a plain round steel bar and is welded to an outer wall of said steel tubular column.
10. A joint for a steel core concrete column to a reinforced concrete beam according to claim 1, wherein said joint comprises a plurality of shear rings arranged parallel to each other from top to bottom or said joint comprises a helical shear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221861657.3U CN218508664U (en) | 2022-07-19 | 2022-07-19 | Connecting joint of concrete-filled steel tubular column and reinforced concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221861657.3U CN218508664U (en) | 2022-07-19 | 2022-07-19 | Connecting joint of concrete-filled steel tubular column and reinforced concrete beam |
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| Publication Number | Publication Date |
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| CN218508664U true CN218508664U (en) | 2023-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221861657.3U Active CN218508664U (en) | 2022-07-19 | 2022-07-19 | Connecting joint of concrete-filled steel tubular column and reinforced concrete beam |
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| CN (1) | CN218508664U (en) |
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- 2022-07-19 CN CN202221861657.3U patent/CN218508664U/en active Active
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