CN213087072U - Rigid-joint connection node for superposed beam and thin-wall steel pipe concrete column - Google Patents
Rigid-joint connection node for superposed beam and thin-wall steel pipe concrete column Download PDFInfo
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- CN213087072U CN213087072U CN202021163759.9U CN202021163759U CN213087072U CN 213087072 U CN213087072 U CN 213087072U CN 202021163759 U CN202021163759 U CN 202021163759U CN 213087072 U CN213087072 U CN 213087072U
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Abstract
A steel-reinforced joint node for a laminated beam and a thin-wall steel tube concrete column comprises a concrete precast beam, a thin-wall steel tube, steel tube inner concrete, a U-shaped steel corbel, a node cast-in-place concrete and beam negative moment reinforcements, wherein the concrete precast beam comprises a concrete body, a main reinforcement and a beam end bottom steel plate, the beam end bottom steel plate is connected with the end part of the main reinforcement in a welding mode, the thin-wall steel tube is provided with an inner transverse partition plate, an outer transverse partition plate, a reinforcing steel plate and a through hole penetrating through the beam negative moment reinforcements, the reinforcing steel plate is connected to the periphery of the through hole in a welding mode, the inner transverse partition plate is connected to the inner wall of the thin-wall steel tube in a welding mode, the outer transverse partition plate is connected to the outer wall of the thin-wall steel tube in a welding mode, the U-shaped steel corbel consists. The steel corbels and the beam end steel plates are welded and connected in a backward-facing mode after floor construction is completed, the operation condition is good, the force transmission of the steel bars on the lower portion of the beam end is direct and reliable, the structure is simple, and the rigid connection of the beam and the column joint is guaranteed.
Description
Technical Field
The utility model relates to a building (structure) field of building, especially, relate to a superposed beam and thin-walled steel pipe concrete column just knot connection node form.
Background
The beam-column joint bracket of the fabricated composite structure usually adopts a steel bracket with a web plate downwards connected with the composite column, and the beam-end concrete pouring needs to increase a formwork supporting procedure, so that the construction is troublesome and the impression effect is poor. The prior patent (patent number: 2019105106912) discloses an assembly type building connection node of a steel pipe concrete column and a precast concrete superposed beam, and proposes that the precast beam is placed by adopting a U-shaped steel groove and a pre-welded outer ring plate, but a hogging moment steel bar of the precast superposed beam is connected with the pre-welded outer ring plate arranged on the surface of a column steel pipe through a superposed layer steel plate, so that the concrete pouring operation difficulty at the gap of the beam column node is increased, the field welding workload is large, and the construction quality is influenced. In addition, when the wall thickness of the steel pipe is thin, the steel corbels cannot meet the requirement of shear force transmission of the beam end, a part for directly transmitting the shear force to concrete needs to be arranged, the welding workload of the steel bars on the upper part of the beam end is large, the steel bars are complicated to connect, the operation of connecting the steel bars on the lower part is difficult, and the load transmission is difficult to guarantee. The joint of the reinforced concrete composite beam and the thin-wall steel pipe concrete column which is formed by directly penetrating the hogging moment steel bars of the prefabricated composite beam through the joint and transferring force through the steel plates at the lower part is not reported.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome above-mentioned prior art not enough, provide a prefabricated composite beam hogging moment reinforcing bar and directly run through node, lower part through the reinforced concrete composite beam and the just joint connection node of thin-walled steel tube concrete column of steel sheet biography power.
According to the utility model provides a combination beam and thin wall steel pipe concrete column rigid coupling node, including concrete precast beam, thin wall steel pipe, steel pipe inner concrete, U shaped steel corbel, node cast-in-place concrete and roof beam hogging moment reinforcing bar, concrete precast beam includes concrete body, main muscle and beam-ends bottom steel plate, the beam-ends bottom steel plate with main muscle tip welding connection, thin wall steel pipe is equipped with interior cross slab, outer cross slab, stiffening steel plate and the through-hole of wearing the roof beam hogging moment reinforcing bar, the stiffening steel plate welding is linked in the through-hole periphery, interior cross slab welding is linked in the thin wall steel pipe inner wall, outer cross slab welding is linked in the thin wall steel pipe outer wall, U shaped steel corbel comprises bottom plate, web and upper flange board, the bottom plate is equipped with the slot shape through-hole, the bottom plate welds in the web both sides, upper flange board welding is linked in the web top, adjacent the upper flange board of U shaped steel corbel welds each other and links, the bottom plates of the adjacent U-shaped steel brackets are welded and connected through the outer transverse partition plate, the node cast-in-place concrete comprises beam laminated layer concrete and beam and U-shaped steel bracket gap filling concrete, the beam laminated layer concrete and the gap filling concrete are integrally cast, the U-shaped steel brackets are welded and connected to the outer sides of the thin-wall steel pipes, the concrete precast beams are placed on the bottom plates of the U-shaped steel brackets, the bottom plates are welded and connected with the beam end bottom steel plates through the groove-shaped through holes, and the beam hogging moment steel bars penetrate through the through holes of the thin-wall steel pipes and extend into the precast beam laminated layer concrete for a certain length.
According to the utility model provides a pair of superposed beam and thin-walled steel pipe concrete column just bond connection node still has following attached technical characteristic:
the thin-wall steel pipe is formed by welding and combining a plurality of high-strength thin steel plates after cold roll forming, and the strength of the thin-wall steel pipe is more than Q345.
The thin-walled steel pipe is welded with a certain number of shear nails within the U-shaped steel bracket wrapping range, and the shear nails extend out of the inner side and the outer side of the wall of the thin-walled steel pipe by a certain length.
And a drawknot nail is welded at the web plate joint of the U-shaped steel bracket on the inner side of the thin-wall steel pipe.
The web plate of the U-shaped steel bracket is in a right-angle ladder shape with a large lower part and a small upper part.
And a brace and a vertical rib are welded in the thin-wall steel pipe.
The concrete in the steel tube is high-strength concrete with the strength of more than C50.
The concrete precast beam is a common concrete precast beam or a prestressed concrete precast beam, the lower part of the precast beam end is in a slope shape, and the bottom of the precast beam end is provided with a notch.
The reinforced steel plate is formed by welding a plurality of steel plates.
According to the utility model provides a pair of superposed beam and thin-walled steel pipe concrete column just bond connection node compares with prior art and has following advantage:
1. the U-shaped steel bracket and the beam end steel plate are connected in a back-up welding mode after floor construction, the welding operation does not affect the construction period, the operation condition is good, the force transmission of the lower part steel bar of the beam end is direct and reliable, and the structure is simple.
2. The beam hogging moment steel bar directly penetrates through the column joint, so that force transmission is direct, construction is convenient, and beam end concrete pouring and tamping are convenient.
3. The load under the action of the self weight of the beam is sheared by the U-shaped steel bracket in the construction stage, and the load is nailed to the column concrete by the shearing force in the use stage, so that the shearing resistance of the beam end is reliable.
4. The U-shaped steel bracket flange plates in two directions are connected, so that the stability of the steel pipe column panel is improved, and the force transmission is more reasonable.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a cross-sectional view of the cross-sectional view a-a of fig. 2 according to the present invention.
Fig. 4 is a schematic view of the U-shaped steel corbel placing surface of the present invention.
Fig. 5 is the schematic view of the end of the precast beam of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1 to 5, in the embodiment of the present invention, the node for rigid-connection of a composite beam and a thin-walled steel tube concrete column comprises a concrete precast beam 1, a thin-walled steel tube 2, a steel tube inner concrete 21, a U-shaped steel corbel 3, a node cast-in-place concrete 4 and a beam hogging moment reinforcement 5, wherein the concrete precast beam 1 comprises a concrete body 11, a main reinforcement 12 and a beam-end bottom steel plate 13, the beam bottom steel plate 13 is connected with the end portion of the main reinforcement 12 by welding, the thin-walled steel tube 2 is provided with an inner diaphragm 26, an outer diaphragm 35, a reinforcing steel plate 4 and a through hole 22 penetrating through the beam hogging moment reinforcement, the reinforcing steel plate 4 is connected to the periphery of the through hole 22 by welding, the inner diaphragm 26 is connected to the inner wall of the thin-walled steel tube 2 by welding, the outer diaphragm 35 is connected to the outer wall of the thin-walled steel tube 2, the U-shaped steel corbel 3 is composed of a bottom plate 31, a, the bottom plate 31 is welded on two sides of the web plate 32, the upper flange plate 33 is welded on the top of the web plate 32, the upper flange plates 33 adjacent to the U-shaped steel corbel 3 are welded with each other, the bottom plate 31 adjacent to the U-shaped steel corbel 3 is welded with the outer transverse partition plate 35, the node cast-in-place concrete 4 comprises beam superposed layer concrete 41 and beam and U-shaped steel corbel gap filling concrete 42, the beam superposed layer concrete 41 and the gap filling concrete 42 are integrally cast, the U-shaped steel corbel 3 is welded on the outer side of the thin-wall steel tube 2, the concrete precast beam 1 is laid on the bottom plate of the U-shaped steel corbel 3, the bottom plate 31 is welded with the beam end bottom steel plate 13 through the groove-shaped through hole 34, and the beam negative steel bar 5 penetrates through the through hole 22 of the thin-wall steel tube and extends into the precast beam superposed layer concrete for a certain length. The through hole groove 33 arranged on the U-shaped steel bracket 3 can be welded and connected with the beam end steel plate 13 of the concrete precast beam 1, an operator completes a back-up welding connection mode in floor construction, the operation condition is good, the force transmission of the steel bar at the lower part of the beam end is direct and reliable, the structure is simple, and the rigid connection of the beam and the column node is ensured.
Referring to fig. 2 and 3, in the embodiment of the rigid-joint node of the composite beam and the thin-wall steel tube concrete column provided by the present invention, a certain number of shear nails 61 are welded on the wall side of the thin-wall steel tube 2 within the range of the U-shaped steel corbel 3, the shear nails 61 extend out of the inner side and the outer side of the wall of the thin-wall steel tube by a certain length, and the shear nails 61 are welded on the inner side of the thin-wall steel tube at the web plate joint of the U-shaped steel corbel. The shear pins 61 improve the shear strength at both ends of the structure during use.
Referring to fig. 2 and 4, in the embodiment of the rigid-joint node of the composite beam and the thin-wall steel tube concrete column provided by the present invention, the web of the U-shaped steel corbel 3 is in a right-angled ladder shape with a large bottom and a small top, and a tie nail 62 is welded at the joint of the web of the U-shaped steel corbel inside the thin-wall steel tube. The steel bracket in the shape of a right trapezoid saves the steel consumption under the same load, and the drawknot nails 62 contribute to improving the shear strength.
Referring to fig. 4, in the embodiment of the joint for rigid connection between a composite beam and a thin-wall steel tube concrete column provided by the present invention, the thin-wall steel tube 2 is formed by welding and combining a plurality of high-strength thin steel plates after being formed by cold bending, the strength of the thin-wall steel tube 2 is above Q345, the brace 24 and the vertical rib 25 are welded and connected in the thin-wall steel tube, and the concrete 21 in the steel tube is high-strength concrete with the strength above C50. The cost performance of the material is greatly improved by adopting the high-strength steel pipe and the high-strength concrete.
Referring to fig. 2 to 5, in the embodiment of the present invention, the concrete precast beam 1 is a common concrete precast beam or a prestressed concrete precast beam, the lower side of the end of the precast beam 1 is in a slope shape, and the bottom of the end of the precast beam is provided with a notch 13. The bottom of the end of the precast beam 1 is provided with a notch 13, so that the precast beam 1 and the U-shaped steel bracket 3 are in the same plane after being placed, the distance of the concrete precast beam 1 reserved for pouring concrete is in a slope shape, the compactness and integrity of the concrete are improved, the concrete bracket is formed after the post-pouring concrete and the shear nails 6 are poured, and the shearing strength of the node is further improved.
In the present invention, all "a certain amount, a certain length" means a length necessary for satisfying design requirements, that is, a length necessary for meeting connection and strength requirements, and the length is clear to those skilled in the art and can be set as required.
Claims (9)
1. A kind of laminated beam and concrete column rigid-joint node of thin-walled steel tube, including precast concrete beam, thin-walled steel tube, steel tube inner concrete, U shaped steel corbel, node cast-in-place concrete and roof beam hogging moment reinforcing bar, its characteristic is: the concrete precast beam comprises a concrete body, a main rib and a beam end bottom steel plate, wherein the beam end bottom steel plate is connected with the end part of the main rib in a welding way, the thin-wall steel pipe is provided with an inner transverse partition plate, an outer transverse partition plate, a reinforcing steel plate and a through hole penetrating through the beam hogging moment steel bar, the reinforcing steel plate is welded at the periphery of the through hole, the inner transverse partition plate is welded at the inner wall of the thin-wall steel pipe, the outer transverse partition plate is welded at the outer wall of the thin-wall steel pipe, the U-shaped steel bracket consists of a bottom plate, a web plate and upper flange plates, the bottom plate is provided with a groove-shaped through hole, the bottom plate is welded at two sides of the web plate, the upper flange plates are welded at the top of the web plate, the upper flange plates adjacent to the U-shaped steel bracket are mutually welded and connected, the bottom plate adjacent to the U-shaped steel bracket is welded and connected through the outer transverse partition plate, the beam superposed layer concrete and the gap filling concrete are integrally cast, the U-shaped steel bracket is welded on the outer side of the thin-wall steel pipe, the concrete precast beam is placed on a bottom plate of the U-shaped steel bracket, the bottom plate is welded and connected with the beam end bottom steel plate through the groove-shaped through hole, and the beam hogging moment steel bar penetrates through the through hole of the thin-wall steel pipe and extends into the precast beam superposed layer concrete for a certain length.
2. The joint node for the rigid joint of the composite beam and the concrete column of the thin-walled steel tube as claimed in claim 1, wherein the thin-walled steel tube is formed by welding and combining a plurality of high-strength thin steel plates after cold-bending forming, and the strength of the thin-walled steel tube is more than Q345.
3. The rigid-joint connection node of the composite beam and the thin-wall steel tube concrete column according to claim 1, wherein a certain number of shear nails are welded to the thin-wall steel tube within the wrapping range of the U-shaped steel corbel, and the shear nails extend out of the inner side and the outer side of the wall of the thin-wall steel tube by a certain length.
4. The joint node for the rigid combination of the composite beam and the concrete column of the thin-wall steel tube as claimed in claim 1, wherein the inner side of the thin-wall steel tube is welded with shear pins at the joint of the webs of the U-shaped steel bracket.
5. The rigid-joint of the composite beam and the concrete column of the thin-wall steel tube as claimed in claim 1, wherein the web of the U-shaped steel bracket is in a right-angled ladder shape with a large lower part and a small upper part.
6. The rigid-joint node of the composite beam and the concrete column of the thin-walled steel tube according to claim 1, wherein the thin-walled steel tube is internally welded with a brace and a vertical rib.
7. The joint of claim 1, wherein the concrete in the steel tube is high strength concrete with a strength of C50 or above.
8. The rigid-joint of the composite beam and the thin-wall steel tube concrete column according to claim 1, wherein the concrete precast beam is a common concrete precast beam or a prestressed concrete precast beam, the lower part of the end of the precast beam is in a slope shape, and the bottom of the end of the precast beam is provided with a notch.
9. The joint of claim 1, wherein the reinforcing steel plate is formed by welding a plurality of steel plates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021163759.9U CN213087072U (en) | 2020-06-22 | 2020-06-22 | Rigid-joint connection node for superposed beam and thin-wall steel pipe concrete column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021163759.9U CN213087072U (en) | 2020-06-22 | 2020-06-22 | Rigid-joint connection node for superposed beam and thin-wall steel pipe concrete column |
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| CN213087072U true CN213087072U (en) | 2021-04-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576645A (en) * | 2020-06-22 | 2020-08-25 | 宁波优造建筑科技有限公司 | Rigid-joint connection node for superposed beam and thin-wall steel pipe concrete column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576645A (en) * | 2020-06-22 | 2020-08-25 | 宁波优造建筑科技有限公司 | Rigid-joint connection node for superposed beam and thin-wall steel pipe concrete column |
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