CN212295341U - Section steel concrete column underpinning node - Google Patents
Section steel concrete column underpinning node Download PDFInfo
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- CN212295341U CN212295341U CN202021390875.4U CN202021390875U CN212295341U CN 212295341 U CN212295341 U CN 212295341U CN 202021390875 U CN202021390875 U CN 202021390875U CN 212295341 U CN212295341 U CN 212295341U
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Abstract
The utility model relates to a shaped steel concrete column asks to trade node, including the underpinning girder steel (2) of locating shaped steel concrete column (1) both sides, the cover establishes steel hoop (3) in shaped steel concrete column (1) outside for support underpin girder steel (2) and with down tube (4) that steel hoop (3) are connected and be used for connecting vertical pull rod (5) of underpinning girder steel (2) and down tube (4), all be equipped with otic placode (6) on underpinning girder steel (2), steel hoop (3), down tube (4) to connect through pin (7), ask to trade girder steel (2), steel hoop (3), down tube (4), vertical pull rod (5) and constitute the underpinning device of triangle connecting rod structure. Compared with the prior art, the utility model has the advantages of be applicable to shaped steel concrete column, improve the bearing capacity, the atress is clear and definite, safe and reliable.
Description
Technical Field
The utility model relates to a ask to trade the node, especially relate to a shaped steel concrete post asks to trade node.
Background
The steel-concrete composite structure is a structure made of steel and concrete, and mainly comprises a section steel concrete structure and a steel pipe concrete structure. The combined structure has the advantages of high material utilization efficiency, good anti-seismic performance, convenient construction and the like, and is widely applied to building engineering. The steel-concrete composite structure mainly comprises a section steel concrete structure and a steel pipe concrete structure, wherein the section steel concrete column is a structural form of embedding section steel into concrete, and the structural form has the advantages of high bearing capacity, good stability, good fireproof performance and the like.
In recent years, with the change of the requirements of people on the use functions of buildings, the number of construction reconstruction projects is increasing. For projects such as building displacement and jacking in building reconstruction engineering, a structure underpinning technology is often used. The underpinning of the structure means that the load of the upper structure is transferred to the lower foundation through the underpinning node. The existing underpinning node is almost only suitable for a concrete column, and the underpinning of the steel reinforced concrete column cannot be realized; and the existing underpinning node has the problem of interface shearing, so that the bearing capacity is poor.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is to provide an applicable in shaped steel concrete column in order to overcome the defect that above-mentioned prior art exists, and can improve the underpinning shaped steel concrete column underpinning node of bearing capacity.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a shaped steel concrete column underpins node for to the underpinning of shaped steel concrete column to being become by concrete and the shaped steel of locating in the concrete, this underpins node is established the steel ferrule in the shaped steel concrete column outside including the underpinning girder steel of the shaped steel both sides of locating shaped steel concrete column, be used for supporting underpin the girder steel and with the down tube that the steel ferrule is connected and the vertical pull rod that is used for connecting underpinning girder steel and down tube, no connection between steel ferrule and the shaped steel all is equipped with the otic placode on underpinning girder steel, steel ferrule, the down tube to connect through the pin, underpin the girder steel, steel ferrule, down tube, vertical pull rod constitution triangle connecting rod structure's underpinning device.
Furthermore, the underpinning steel beam and the section steel are connected through full penetration welding through a split.
Furthermore, a circular hole for installing a lower foundation steel bar is formed in the position, where the longitudinal bar of the section steel concrete column penetrates, of the flange of the underpinning steel beam.
Furthermore, the both sides of underpinning the girder steel are equipped with the triangle rigid body, the inside of triangle rigid body is equipped with split bolt, split bolt uses the triangle rigid body as the stretch-draw pedestal, and the both sides of underpinning the girder steel are located to its other end.
Further, the triangle rigid body includes the three angle steel boards and the end plate of being connected with the three angle steel boards, the three angle steel boards and the edge of a wing welded connection of underpinning the girder steel, the end plate and the web welded connection of underpinning the girder steel.
Further, the steel ferrule comprises a U-shaped ferrule and a steel plate which are welded with each other.
Furthermore, the diagonal rods are made of H-shaped steel.
Further, the vertical pull rod is made of a vertical steel plate.
Furthermore, the strong axis direction of the H-shaped steel is parallel to the plane direction formed by the underpinning steel beam and the inclined rod.
Further, the thickness of the vertical pull rod is not less than 16 mm.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) the underpinning steel beam is arranged outside the section steel concrete column, and the underpinning device is formed by the underpinning steel beam, the steel hoops, the inclined rods and the vertical pull rods, so that the underpinning device can be effectively suitable for the underpinning of the section steel concrete column;
2) the stress model of the underpinning node can be simplified into a triangular rod structure model of an inverted bracket, and the problem of interfacial shearing of a common underpinning node is converted into the problem of bending stress of a triangular rod, so that the bearing capacity of the underpinning node can be improved by measures such as increasing the length of a welding seam, setting a split bolt and the like, and the whole underpinning node is clear in stress, safe and reliable;
3) the welding connection form of the underpinning steel beam and the section steel is full penetration welding with a groove, so that the welding quality of the underpinning steel beam and the section steel can be ensured, and the bearing capacity of the underpinning node is increased;
4) the down tube adopts H shaped steel, and the pull rod adopts the steel sheet, helps being connected between down tube and the underpinning girder steel, steel ferrule, the vertical pull rod, can further improve overall structure's connection stability.
Drawings
FIG. 1 is a schematic elevation structure view of a underpinning node of a steel concrete column in the embodiment;
FIG. 2 is an elevation A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 5 is a schematic diagram of a steel ferrule;
FIG. 6 is a schematic structural view of the diagonal bar;
FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6;
FIG. 8 is a schematic structural diagram of a triangular rigid body;
FIG. 9 is a cross-sectional view taken along line E-E of FIG. 8;
the reference numbers in the figures indicate:
1. a steel concrete column; 11. section steel; 12. concrete; 2. underpinning the steel beam; 3. a steel ferrule; 31. a U-shaped hoop; 32. a steel plate; 4. a diagonal bar; 5. a vertical pull rod; 6. an ear plate; 7. a pin; 8. a triangular rigid body; 81. a triangular steel plate; 82. an end plate; 9. and (4) oppositely pulling the bolts.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1 ~ 4, the utility model relates to a shaped steel concrete column underpins node, this underpins node include shaped steel concrete column 1, underpin girder steel 2, steel ferrule 3, down tube 4, vertical pull rod 5, otic placode 6, triangle rigid body 8 and split bolt 9.
The steel reinforced concrete column 1 comprises concrete 12 and steel sections 11 arranged in the concrete 12. The steel ferrule 3 is sleeved on the outer side of the section steel concrete column 1. The two sides of the section steel 11 of the section steel concrete column 1 are symmetrically provided with underpinning steel beams 2. The two ends of the steel hoop 3 are respectively connected with an inclined rod 4 for supporting the underpinning steel beam 2 and a pull rod 5 for connecting the underpinning steel beam 2 and the inclined rod 4. Specifically, all be equipped with otic placode 6 on underpinning girder steel 2, steel ferrule 3, the down tube 4, steel ferrule 3 passes through the cooperation structure of otic placode 6, pin 7 and connects the one end of down tube 4, and the other end of down tube 4 passes through the cooperation structure of another otic placode 6, pin 7 and connects on the corresponding underpinning girder steel 2. The ear plate 6 of the steel hoop 3 is also connected with a vertical pull rod 5 through a pin 7, and the other end of the vertical pull rod 5 is connected on the underpinning steel beam 2. The vertical counter force of the underpinning steel beam 2 under the action of external load is mainly born by the vertical pull rod 5, so the section size of the underpinning steel beam is determined by stress. The underpinning steel beam 2, the steel hoops 3, the inclined rods 4 and the vertical pull rods 5 jointly form a underpinning device, the connection among all components is assumed to be hinged in a calculation model, and in order to ensure the consistency of the actual structure and the calculation assumption, the underpinning steel beam 2, the steel hoops 3 and the inclined rods 4 are provided with lug plates 6 which are connected through pins 7. The pin 7 is mainly subjected to shearing force under the action of underpinning load, the diameter of the pin is determined by stress calculation, and the diameter of the pin is not less than 20 mm.
In order to ensure the welding quality of the underpinning steel beam 2 and the section steel 11 and increase the bearing capacity of the underpinning node, the welding connection form of the underpinning steel beam 2 and the section steel 11 is the full penetration welding of a groove. In order to facilitate the connection with the lower foundation after the underpinning of the section steel concrete column 1 is completed, a round hole is formed in the position, where a longitudinal rib of the section steel concrete column 1 on the flange of the underpinned steel beam 2 passes through, and after the underpinning of the section steel concrete column 1 is completed, the lower foundation steel bar can stretch into the round hole in the flange of the underpinned steel beam 2 and is mechanically connected with the longitudinal rib of the section steel concrete column 1.
As shown in FIG. 5, the steel hoop 3 is formed by welding a U-shaped hoop 31 and a steel plate 32, and because the steel hoop 3 only provides a horizontal supporting force for the sway rod 4, the sway rod and the steel concrete column 1 are connected without adopting an anchor bolt or the like, so that the damage to the steel concrete column 1 is reduced. In order to improve the rigidity of the steel ferrule 3 and increase the length of a welding seam, the height of the steel ferrule 3 is not required to be less than 200mm, and the thickness is not required to be less than 30 mm. It is not desirable to specify a weld length greater than 62 times the leg size.
In this embodiment, as shown in fig. 6 to 7, preferably, H-shaped steel is used for the diagonal rods 4 to facilitate the connection between the diagonal rods 4 and the underpinning steel beam 2, the steel hoops 3 and the vertical tie rods 5. Under the action of underpinning load and support counter force, the main bending moment direction of the inclined rod 4 is the in-plane direction, the strong axis direction of the inclined rod is limited to be parallel to the in-plane direction in order to ensure the compression stability of the inclined rod 4, and the in-plane direction refers to the plane direction formed by the underpinning steel beam and the inclined rod. In order to facilitate the connection of the vertical pull rod 5 and the underpinning steel beam 2 and the inclined rod 4, the pull rod 5 should adopt a vertical steel plate. The vertical reaction force of the underpinned steel beam 2 under the action of external load is mainly born by the pull rod 5, so the section size of the underpinned steel beam is determined by stress, and the thickness of the underpinned steel beam is regulated to be not less than 16 mm.
Two triangular rigid bodies 8 are symmetrically arranged on two sides of the underpinning steel beam 2, as shown in fig. 8, each triangular rigid body 8 consists of a triangular steel plate 81 and an end plate 82, the right-angle side of each triangular steel plate 81 is connected with the end plate 82, and the steel plates 81 and the end plates 82 are respectively connected with the flanges and the webs of the underpinning steel beam 2 in a welding manner, as shown in fig. 1. The counter bolts 9 are arranged inside the triangular rigid bodies 8, the other ends of the counter bolts 9 are arranged on two sides of the underpinning steel beam 2, and the counter bolts 9 use the triangular rigid bodies 8 as tensioning pedestals. The bearing capacity of the welding seam of the underpinning steel beam 2 and the section steel 11 is increased by prestress applied to the pull bolts 9, so that the shearing resistance of the underpinning node is improved.
The underpinning steel beam, the steel hoops, the inclined rods and the vertical pull rods jointly form the underpinning device, the device is of a triangular rod structure with an inverted bracket, the problem of interfacial shearing of a common underpinning node can be converted into the problem of bending stress of the triangular rod, so that the bearing capacity of the underpinning node can be improved by means of measures such as increasing the length of a welding seam, arranging split bolts and the like, and the whole underpinning node is clear in stress, safe and reliable.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a shaped steel concrete column underpins node for to the underpinning of shaped steel concrete column (1) of constituteing by concrete (12) and shaped steel (11) of locating in concrete (12), its characterized in that, this underpins node is including the underpinning girder steel (2) of shaped steel (11) both sides of locating shaped steel concrete column (1), overlaps the steel hoop (3) of establishing in shaped steel concrete column (1) outside, be used for supporting underpinning girder steel (2) and with down tube (4) that steel hoop (3) are connected and be used for connecting vertical pull rod (5) of underpinning girder steel (2) and down tube (4), no connection between steel hoop (3) and shaped steel (11), all be equipped with otic placode (6) on underpinning girder steel (2), steel hoop (3), down tube (4) to connect through pin (7), underpinning girder steel (2), steel hoop (3), The inclined rod (4) and the vertical pull rod (5) form a underpinning device with a triangular connecting rod structure.
2. A reinforced concrete column underpinning node as claimed in claim 1, characterized in that said underpinning steel beam (2) is connected with said section steel (11) by a split full penetration weld.
3. The section steel concrete column underpinning node according to claim 1, characterized in that the flanges of the underpinning steel beam (2) are provided with round holes for mounting the lower foundation steel bars at the longitudinal bar passing positions of the section steel concrete column (1).
4. A structural steel concrete column underpinning node according to claim 1, characterized in that, the underpinning steel beam (2) is provided with triangular rigid bodies (8) on both sides, the triangular rigid bodies (8) are internally provided with split bolts (9), the split bolts (9) use the triangular rigid bodies (8) as tensioning pedestals, and the other ends thereof are arranged on both sides of the underpinning steel beam (2).
5. A section steel concrete column underpinning node as claimed in claim 4, characterized in that said triangular rigid body (8) comprises a triangular steel plate (81) and an end plate (82) connected with the triangular steel plate (81), said triangular steel plate (81) being welded with the flange of the underpinning steel beam (2), said end plate (82) being welded with the web of the underpinning steel beam (2).
6. A steel reinforced concrete column underpinning node as claimed in claim 1, characterized in that said steel ferrules (3) comprise mutually welded U-shaped ferrules (31) and steel plates (32).
7. A reinforced concrete column underpinning node according to claim 1, characterized in that said diagonal rods (4) are H-section steel.
8. A section steel concrete column underpinning node according to claim 1, characterized in that said vertical tie (5) is a vertical steel plate.
9. A section steel concrete column underpinning node according to claim 7, characterized in that the direction of the strong axis of the H-shaped steel is parallel to the plane direction formed by the underpinning steel beam (2) and the diagonal rods (4).
10. A section steel concrete column underpinning node according to claim 8, characterized in that the thickness of said vertical tie (5) is not less than 16 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021390875.4U CN212295341U (en) | 2020-07-15 | 2020-07-15 | Section steel concrete column underpinning node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021390875.4U CN212295341U (en) | 2020-07-15 | 2020-07-15 | Section steel concrete column underpinning node |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212295341U true CN212295341U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021390875.4U Active CN212295341U (en) | 2020-07-15 | 2020-07-15 | Section steel concrete column underpinning node |
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| Country | Link |
|---|---|
| CN (1) | CN212295341U (en) |
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2020
- 2020-07-15 CN CN202021390875.4U patent/CN212295341U/en active Active
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