CN212358646U - Rigid hinged joint node of superposed beam and thin-wall steel pipe concrete column - Google Patents
Rigid hinged joint node of superposed beam and thin-wall steel pipe concrete column Download PDFInfo
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- CN212358646U CN212358646U CN202021164348.1U CN202021164348U CN212358646U CN 212358646 U CN212358646 U CN 212358646U CN 202021164348 U CN202021164348 U CN 202021164348U CN 212358646 U CN212358646 U CN 212358646U
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Abstract
A joint for the rigid hinge connection of a superposed beam and a thin-wall steel tube concrete column comprises a prefabricated concrete beam, a thin-wall steel tube, a steel tube inner concrete, a U-shaped steel bracket, a joint cast-in-situ concrete and a beam negative-moment reinforcing steel bar, wherein the thin-wall steel tube is provided with a reinforcing steel plate and a through hole penetrating the negative-moment reinforcing steel bar, the reinforcing steel plate is welded on the periphery of the through hole, the U-shaped steel bracket comprises a bottom plate, a web plate and upper flange plates, the web plate is welded on two sides of the bottom plate, the upper flange plates are welded on the top of the web plate, the upper flange plates adjacent to the U-shaped steel bracket are welded and connected with each other, the joint cast-in-situ concrete comprises a beam superposed layer concrete and a filling concrete at the end part of the steel bracket, the beam superposed layer concrete and the filling concrete are cast into a whole, the U-shaped steel bracket is welded and connected with the outer wall of the thin-wall steel tube, the prefabricated concrete beam is placed, and extends into the precast beam laminated layer concrete for a certain length. The concrete precast beam is directly placed on the U-shaped steel bracket, the hoisting is convenient, the upper reinforcing steel bar of the precast concrete composite beam penetrates through the thin-wall steel pipe column, so that the node is hinged under the action of the positive bending moment of the beam end and is rigidly connected under the action of the negative bending moment, the force transmission is clear, and the load requirements of various working conditions are met.
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 articulate 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 in a mode of a U-shaped steel groove and a prewelded outer ring plate, but an upper reinforcing steel bar of the precast superposed beam is connected with the prewelded 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 U-shaped steel corbel cannot meet the requirement of shear force transmission of a 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 portion of the beam end is large, the steel bars are complex to connect, the operation of connecting the steel bars on the lower portion is difficult, and the load transmission is difficult to guarantee. A rigid hinged joint of a thin-wall steel tube concrete column, which is not required to be connected with the column by a bottom reinforcing steel bar, is hinged under the action of positive bending moment at the end part of a beam and is rigidly connected under the action of negative bending moment, has not been reported.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome above-mentioned prior art not enough, provide a bottom reinforcing bar need not with the column connection, under the beam-ends portion positive bending moment effect for articulated, negative bending moment effect down be rigid connection's the just articulated node of thin-walled steel tube concrete column.
According to the utility model provides a superposed beam and thin-walled steel tube concrete column just articulated connection node, including precast concrete roof beam, thin-walled steel tube, concrete in the steel pipe, U shaped steel corbel, node cast-in-place concrete and roof beam negative moment reinforcing bar, the thin-walled steel tube is equipped with the stiffening steel sheet and passes through the through-hole of negative moment reinforcing bar, the stiffening steel sheet welds and allies oneself with the through-hole periphery, U shaped steel corbel includes bottom plate, web and upper limb board, the web welds and allies oneself with in the bottom plate both sides, the upper limb board welds and allies oneself with in the web top, adjacent the upper limb board of U shaped steel corbel welds the connection each other, node cast-in-place concrete includes roof beam coincide layer concrete and steel corbel tip filling concrete, roof beam coincide layer concrete with fill concrete as an organic whole, U shaped steel corbel welds and allies oneself with in the thin-walled steel tube outer wall, precast concrete roof beam shelves on the bottom plate of U shaped steel, and the beam hogging moment reinforcing steel bars penetrate through the through holes of the thin-wall steel pipes and extend into the precast beam laminated concrete for a certain length.
According to the utility model provides a pair of superposed beam and just articulated connection node of thin-walled steel pipe concrete column still have 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 steel plates 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.
The outer wall of the thin-walled steel tube is welded with an outer transverse partition plate, and the bottom plates of the adjacent U-shaped steel brackets are welded and connected through the outer transverse partition plate.
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 pretensioned prestressed concrete precast beam, and the lower part of the end of the concrete precast beam is in a slope shape.
The reinforced steel plate is formed by welding a plurality of steel plates.
According to the utility model provides a pair of superposed beam just articulates with thin-walled steel pipe concrete column and allies oneself with nodal point and prior art and compare and have following advantage:
1. by adopting a special calculation method, the steel bars at the bottom of the beam are not connected with the columns, and the beam ends are hinged under the action of positive bending moment and rigidly connected under the action of negative bending moment by increasing the quantity of the bent bars, so that the construction of the node is greatly facilitated.
2. The reinforcing steel bars on the upper part of the beam directly penetrate through the column joints, force transmission is direct, construction is convenient, and pouring and tamping of concrete at the beam end are more convenient.
3. Under the action of self-weight, the U-shaped steel corbels shear, and shear is transmitted to concrete by the shear nails in the using stage, so that the shear 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 includes a precast concrete beam 1, a thin-wall steel tube 2, a concrete in steel tube 21, a U-shaped steel corbel 3, a node cast-in-place concrete 4 and a beam negative-moment steel bar 5, the thin-wall steel tube 2 is provided with a reinforcing steel plate 23 and a through hole 22 for passing the negative-moment steel bar, the reinforcing steel plate 23 is welded around the through hole 22, the U-shaped steel corbel 3 includes a bottom plate 31, a web plate 32 and an upper flange plate 33, the web plate 32 is welded on both sides of the bottom plate 31, 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 to each other, the node cast-in-place concrete 4 includes a beam superposed layer concrete 41 and a beam and steel corbel end portion filled with concrete 42, the beam superposed layer concrete 41 and the filled concrete 42 are cast integrally, u shaped steel bracket 3 weld in 2 outer walls of thin-walled steel pipe, concrete precast beam 1 is shelved on the bottom plate 31 of U shaped steel bracket 3, roof beam hogging moment reinforcing bar 5 runs through the through-hole 22 of thin-walled steel pipe, and stretches into certain length in the precast beam lamination layer 41 concrete. The concrete precast beam 1 is directly placed on the U-shaped steel bracket 3, the hoisting efficiency is improved, the beam hogging moment steel bars 5 directly penetrate through column joints, force transmission is direct, construction is convenient, beam end concrete pouring and tamping are convenient, and the reinforcing steel plates 23 can reinforce the strength of the periphery of the steel pipe wall through hole 22.
Referring to fig. 2 and 3, in the embodiment of the present invention, in which the laminated beam and the thin-walled steel tube concrete column are just hinged to each other to form the joint, the thin-walled 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 steel plates is above Q345, the brace 24 and the vertical rib 25 are welded in the thin-walled steel tube 2, the concrete inside the thin-walled steel tube is high-strength concrete 21, and the strength is 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 and 3, in the embodiment of the rigid hinged 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 2 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 3, in the embodiment of the joint for the rigid hinged connection of the composite beam and the thin-wall steel tube concrete column provided by the present invention, an outer diaphragm 34 is welded to the outer wall of the thin-wall steel tube 2, and the bottom plates 31 of the adjacent U-shaped steel brackets are welded and connected through the outer diaphragm 34. The outer diaphragm is favorable for improving the integrity of the bracket.
Referring to fig. 1 to 3, in the embodiment of the present invention, in which the joint node is formed by connecting the composite beam and the thin-walled steel tube concrete column, 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 the tie nails 62 are welded to the inner side of the thin-walled steel tube 2 at the joints of the webs 32 of the U-shaped steel corbel. The U-shaped steel corbel in the shape of a right trapezoid saves the steel consumption under the same load, and the drawknot nails 62 contribute to improving the stability of the steel pipe column panel.
Referring to fig. 2, fig. 3 and fig. 5, in the embodiment of the present invention, in which the joint node is formed by hinging a laminated beam and a thin-wall steel pipe concrete column, the concrete precast beam 1 is a common concrete precast beam or a pretensioned prestressed concrete precast beam, the lower side of the end portion of the concrete precast beam 11 is in a slope shape 12, and the reinforcing steel plate 23 is formed by welding a plurality of steel plates and is welded and connected along the periphery of the through hole 22. The concrete precast beam lower side has the breach and has guaranteed to shelve the back and at the coplanar with U shaped steel bracket, slope form precast composite beam reserves the distance of concreting, improves the closely knit nature and the wholeness of concrete, simultaneously after the post cast concrete pour with shear force nail 6 forms the concrete bracket, further guarantees node shear strength.
In the present invention, all "a certain distance" means a length necessary to satisfy a design requirement, that is, a length necessary to be suitable for a connection and a strength requirement, and the length is clear to those skilled in the art and may be set as needed.
Claims (10)
1. The utility model provides a superposed beam and thin-walled steel tube concrete column just articulate connection node, includes concrete precast beam, thin-walled steel tube, steel pipe inner concrete, U shaped steel bracket, node cast-in-place concrete and roof beam hogging moment reinforcing bar, its characterized in that: the thin-walled steel pipe is equipped with the stiffening steel board and wears the through-hole of hogging moment reinforcing bar, the stiffening steel board weld ally oneself with at the through-hole periphery, U shaped steel bracket includes bottom plate, web and upper limb board, the web weld ally oneself with in the bottom plate both sides, the upper limb board weld ally oneself with in the web top, it is adjacent the upper limb board of U shaped steel bracket welds the connection each other, the node cast-in-place concrete includes the concrete that fills of roof beam coincide layer concrete and steel bracket tip, roof beam coincide layer concrete with it pours as an organic wholely to fill the concrete, U shaped steel bracket weld ally with thin-walled steel outer wall, the precast beam is shelved on the bottom plate of U shaped steel bracket, roof beam hogging moment reinforcing bar runs through the through-hole of thin-walled steel pipe to stretch into certain length in the precast beam coincide layer concrete.
2. The joint of claim 1, wherein the thin-walled steel tube is formed by welding a plurality of high-strength thin steel plates after cold-bending forming, and the strength of the steel plates is above Q345.
3. The rigid hinged joint of a composite beam and a thin-wall steel tube concrete column as recited in 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 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 joints of the webs of the U-shaped steel corbel.
5. The joint of claim 1, wherein the web of the U-shaped steel bracket has a shape of a right trapezoid with a large bottom and a small top.
6. The rigid hinged joint of a composite beam and a concrete column with a thin-walled steel tube as claimed in claim 1, wherein the outer wall of the thin-walled steel tube is welded with an outer diaphragm plate, and the bottom plates of the adjacent U-shaped steel corbels are welded and connected through the outer diaphragm plate.
7. The rigid hinged joint of a composite beam and a concrete column of a thin-walled steel tube as claimed in claim 1, wherein the thin-walled steel tube is welded with a brace and a vertical rib.
8. The joint of claim 1, wherein the concrete in the steel tube is high-strength concrete with a strength of above C50.
9. The joint of claim 1, wherein the precast concrete beam is a general precast concrete beam or a pretensioned prestressed concrete beam, and the lower end of the precast concrete beam is in a slope shape.
10. The joint of claim 1, wherein the reinforced steel plates are formed by welding a plurality of steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021164348.1U CN212358646U (en) | 2020-06-22 | 2020-06-22 | Rigid hinged joint node of superposed beam and thin-wall steel pipe concrete column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021164348.1U CN212358646U (en) | 2020-06-22 | 2020-06-22 | Rigid hinged joint node of superposed beam and thin-wall steel pipe concrete column |
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| CN212358646U true CN212358646U (en) | 2021-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113944233A (en) * | 2021-11-10 | 2022-01-18 | 中冶建工集团有限公司 | Steel pipe column and concrete beam connecting structure and construction method thereof |
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- 2020-06-22 CN CN202021164348.1U patent/CN212358646U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113944233A (en) * | 2021-11-10 | 2022-01-18 | 中冶建工集团有限公司 | Steel pipe column and concrete beam connecting structure and construction method thereof |
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