CN214883011U - Connection structure capable of realizing accurate positioning of multi-limb concrete-filled steel tube space structure and bearing platform - Google Patents
Connection structure capable of realizing accurate positioning of multi-limb concrete-filled steel tube space structure and bearing platform Download PDFInfo
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- CN214883011U CN214883011U CN202120896351.0U CN202120896351U CN214883011U CN 214883011 U CN214883011 U CN 214883011U CN 202120896351 U CN202120896351 U CN 202120896351U CN 214883011 U CN214883011 U CN 214883011U
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Abstract
The utility model belongs to the technical field of bridge engineering, especially, relate to a connection structure that can realize many limbs steel pipe concrete spatial structure and accurate location of cushion cap. The utility model discloses a set up the mode that supports steel pipe unit, steel body base unit, anchor steel unit, connection steel pipe and concrete placement piece on concrete cushion cap, reach the purpose that long-term high strength that many limbs steel pipe concrete structure can be relative supported and use. The utility model has the advantages of it is following: the multi-limb steel pipe concrete structure has strong integrity and high internal connection structural strength, and is not easy to break and decompose after long-time high-load support use; secondly, the multi-limb steel pipes are uniformly and symmetrically arranged, and the overall connection strength is enhanced through the connecting steel pipes, so that the uniform stress and the stable support of the whole support structure are ensured; thirdly, the whole construction method of the multi-limb steel pipe concrete structure mostly adopts welding and pouring processes, the overall structure layout is reasonable, and the simple and efficient construction operation is finally ensured.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering, especially, relate to a connection structure that can realize many limbs steel pipe concrete spatial structure and accurate location of cushion cap.
Background
The multi-limb steel pipe concrete structure mainly comprises steel pipes for supporting and a concrete supporting seat, and is generally used for bearing arch ribs of a large-span arch bridge, in addition, the multi-limb steel pipe structure can further improve the supporting strength, and finally, the whole multi-limb steel pipe supporting structure has the advantages of strong primary impact resistance, good shock resistance, outstanding fire resistance and corrosion resistance and moderate construction difficulty.
However, in the conventional multi-leg steel pipe structure, there is a problem that the connection strength between the steel pipe and the concrete body is insufficient to some extent, which eventually results in that the multi-leg steel pipe cannot support a large weight for a long time and with a high load.
Therefore, a multi-limb steel pipe supporting base capable of strengthening the connection strength of the steel pipe and the concrete is urgently needed, so that the whole supporting structure is better in integrity and higher in supporting strength.
The patent publication No. CN207419230U, Chinese utility model patent that the publication date is 2018.05.29 discloses a hollow combination tower pier of many limbs, the tower pier comprises many limbs pylon or pier stud that is a limb at least, connect through the stull between each limb pylon or pier stud, each limb pylon or pier stud is double-deck steel pipe combination form, pylon or pier stud are by setting up the pylon or pier stud segment of circulation hole and not set up the pylon or pier stud segment of circulation hole and splice from top to bottom and form, the pylon or pier stud segment lower part that sets up the circulation hole is connected with the cushion cap, upper portion and the lower part connection of the pylon or pier stud segment that does not set up the circulation hole, connect through the short prestressed reinforcement of anchor and the full length prestressed reinforcement that link up whole pylon or pier stud between pylon or pier stud segment.
But the utility model discloses a hollow combination column pier of many limbs in the patent, only connect through the stull between its column, so though intensity between column and the column can be suitably improved, but still lack connection structure between column and the cushion cap, the column lower extreme is close to cushion cap position department and still buckles easily, whole column pier wholeness is not enough like this, it supports intensity also not enough, the high load of short time relatively supports the use, the column pier structure that will appear explains, cracked problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can realize connection structure of many limbs steel pipe concrete spatial structure and accurate location of cushion cap, it can reach the purpose that many limbs steel pipe concrete structure can be relative long-term high strength support used through the mode that sets up support steel pipe unit, steel body base unit, anchor steel unit, connection steel pipe and concrete placement piece on the concrete cushion cap.
The utility model provides a technical scheme that above-mentioned problem adopted is: the connection structure capable of realizing accurate positioning of the multi-limb steel pipe concrete space structure and the bearing platform comprises a concrete bearing platform, a plurality of supporting steel pipe units arranged on the concrete bearing platform, a plurality of steel body base units arranged on the concrete bearing platform and located between the supporting steel pipe units, anchoring steel units arranged in the concrete bearing platform and used for connecting and reinforcing the supporting steel pipe units and the steel body base units, connecting steel pipes arranged between the steel body base units and the supporting steel pipe units, and a concrete pouring block arranged on the concrete bearing platform and with the upper surface higher than the upper end of the connecting steel pipes.
The further preferred technical scheme is as follows: the supporting steel pipe unit comprises a steel pipe main body, steel pipe concrete and steel pipe shear pieces, wherein the lower end of the steel pipe main body is arranged on the upper surface of the concrete bearing platform and used for installing the connecting steel pipes, the steel pipe concrete is arranged in the steel pipe main body, and the steel pipe shear pieces are arranged on the steel pipe main body and used for reinforcing connection in the concrete pouring blocks.
The further preferred technical scheme is as follows: all the supporting steel pipe units are arranged in a centrosymmetric manner relative to the steel body base unit.
The further preferred technical scheme is as follows: the steel body base unit comprises a base steel plate arranged on the upper surface of the concrete bearing platform, a hemispherical steel block arranged on the upper surface of the base steel plate and on the spherical surface and used for installing the connecting steel pipe, and a base shear part arranged on the hemispherical steel block and used for reinforcing connection in the concrete pouring block.
The further preferred technical scheme is as follows: the anchoring steel unit comprises an anchoring bottom plate arranged in the concrete bearing platform, a bolt connection column arranged at the middle position of the upper surface of the anchoring bottom plate and used for being connected with the base steel plate, and a reinforcing piece arranged at the side position of the upper surface of the anchoring bottom plate and used for reinforcing the steel pipe main body in a concrete filled steel pipe inserting mode.
The further preferred technical scheme is as follows: the reinforcing piece is formed steel or a steel rod.
The further preferred technical scheme is as follows: the supporting steel pipe unit further comprises a steel pipe hole which is formed in the steel pipe main body and used for inserting and installing the steel pipe shear piece, and the anchoring steel unit further comprises a steel pipe hole which is formed in the reinforcing piece and used for inserting and installing the steel pipe shear piece.
The further preferred technical scheme is as follows: the height of the upper end surface of the steel pipe concrete is higher than that of the upper surface of the concrete pouring block.
The further preferred technical scheme is as follows: the height of the upper end surface of the steel pipe concrete is higher than that of the upper surface of the concrete pouring block.
The construction method of the connection structure capable of realizing the accurate positioning of the multi-limb concrete-filled steel tube space structure and the bearing platform sequentially comprises the following steps of:
s1, installing and connecting the anchoring steel units, and pouring concrete on the anchoring steel units to form the concrete bearing platform to obtain a concrete supporting base;
s2, mounting the steel body base unit on the concrete support base to obtain a multi-limb steel pipe primary main body;
s3, mounting the steel pipe main body of the supporting steel pipe unit and the connecting steel pipe on the multi-limb steel pipe primary main body to obtain a multi-limb steel pipe middle-term main body;
s4, pouring the steel pipe concrete in the supporting steel pipe unit of the multi-limb steel pipe middle-stage main body to obtain a multi-limb steel pipe later-stage main body;
and S5, pouring the concrete pouring block on the later-stage main body of the multi-limb steel pipe to obtain the final multi-limb steel pipe concrete structure.
The utility model has the advantages of it is following: the multi-limb steel pipe concrete structure has strong integrity and high internal connection structural strength, and is not easy to break and decompose after long-time high-load support use; secondly, the multi-limb steel pipes are uniformly and symmetrically arranged, and the overall connection strength is enhanced through the connecting steel pipes, so that the uniform stress and the stable support of the whole support structure are ensured; thirdly, the whole construction method of the multi-limb steel pipe concrete structure mostly adopts welding and pouring processes, the overall structure layout is reasonable, and the simple and efficient construction operation is finally ensured.
Drawings
Fig. 1 is a schematic view of the use of the multi-limb steel pipe concrete structure of the present invention.
Fig. 2 is a schematic view of a first distribution mode of a plurality of supporting steel pipe units in the overlooking angle of the present invention.
Fig. 3 is the schematic view of the position structure of the middle support steel pipe unit, the steel body base unit and the anchoring steel unit of the present invention.
Fig. 4 is a schematic view of the connection structure between the middle steel tube shear member and the reinforcing steel plate of the present invention.
Fig. 5 is a schematic view of a second distribution mode of a plurality of supporting steel pipe units in the top view angle of the present invention.
Fig. 6 is a schematic view of a third distribution mode of a plurality of supporting steel pipe units in the top view angle of the present invention.
Detailed Description
The following description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Example (b): as shown in fig. 1, 2, 3, 4, 5 and 6, the connection structure capable of realizing accurate positioning of a multi-limb steel tube concrete space structure and a bearing platform comprises a concrete bearing platform 1, a plurality of supporting steel tube units 2 arranged on the concrete bearing platform 1, a steel body base unit 3 arranged on the concrete bearing platform 1 and located between the supporting steel tube units 2, an anchoring steel unit 4 arranged in the concrete bearing platform 1 and used for connecting and reinforcing the supporting steel tube units 2 and the steel body base unit 3, a connecting steel tube 5 arranged between the steel body base unit 3 and the supporting steel tube units 2, and a concrete pouring block 6 arranged on the concrete bearing platform 1 and having an upper surface higher than the upper end of the connecting steel tube 5.
In this embodiment, the supporting steel pipe unit 2, the steel body base unit 3, the anchoring steel unit 4 and the connecting steel pipe 5 form a complete steel structure for ensuring the supporting strength, the concrete cap 1 is cast first for installing the steel structure, and the concrete block 6 is cast later for reinforcing the steel structure, so that the whole multi-limb steel pipe concrete structure has the advantages of large structural strength, large allowable load and long-term stable use when used for supporting a bridge.
The supporting steel pipe unit 2 includes a steel pipe main body 201 having a lower end disposed on an upper surface of the concrete cap 1 and for installing the connection steel pipe 5, steel pipe concrete 202 disposed in the steel pipe main body 201, and steel pipe shear members 203 disposed on the steel pipe main body 201 and for reinforcing the connection in the concrete cast 6.
In the present embodiment, the steel structure is made of conventional high-strength steel, and the concrete material used for the concrete filled steel tube 202, the concrete platform 1, and the concrete block 6 is conventional appropriate high-strength concrete.
The distance between the upper ends of any two supporting steel pipe units 2 can be larger than or smaller than the distance between the lower ends.
In the present embodiment, the plurality of steel pipe main bodies 201 may be in an "expanded shape" or in a "contracted shape" like a "flower".
All the supporting steel pipe units 2 are arranged in a centrosymmetric manner about the steel body base unit 3.
In the present embodiment, the array may be a linear array or a circular array having a trapezoidal shape in a plan view, as shown in fig. 5 and 6.
The steel body base unit 3 comprises a base steel plate 301 arranged on the upper surface of the concrete bearing platform 1, a hemispherical steel block 302 arranged on the upper surface of the base steel plate 301 and on the spherical surface and used for installing the connecting steel pipe 5, and a base shear member 303 arranged on the hemispherical steel block 302 and used for reinforcing connection in the concrete pouring block 6.
In this embodiment, the hemispherical steel blocks 302 may be solid or open, so as to ensure that the connecting steel pipes 5 can be welded and fixed stably, and the base shear members 303 and the steel pipe shear members 203 have the same structure and are both T-shaped, so as to ensure that the steel pipe main body 201 and the hemispherical steel blocks 302 can be "pulled" in the concrete cast block 6 formed at a later stage.
The anchoring steel unit 4 includes an anchoring base plate 401 provided in the concrete cap 1, a bolt-on post 402 provided at a central position of an upper surface of the anchoring base plate 401 and adapted to be connected to the base steel plate 301, and a reinforcing member 403 provided at a side position of an upper surface of the anchoring base plate 401 and adapted to reinforce the steel pipe main body 201 by inserting the concrete filled steel 202.
In this embodiment, the base steel plate 301 is provided with an opening for inserting the screw post 402 and a matched fastening nut, and the number of the screw posts 402 is 4, so as to stably screw the 4 corners of the base steel plate 301.
In addition, the structure of the reinforcing member 403 may be tubular, so that the reinforcing member 403 can be stably "pulled" by the concrete filled steel tube 202.
Finally, the screw connection column 402 and the reinforcing member 403 are welded to the upper surface of the anchoring base plate 401, the welding angle depends on the inclination angle of the steel pipe main body 201, and the reinforcing member 403 is ensured to be located at the center position of the steel pipe main body 201 as much as possible, so that the pull-up structure is ensured to have the effect of uniform stress.
The reinforcing member 403 is formed steel or a steel rod.
In this embodiment, the reinforcing member 403 and the connecting steel pipe 5 have substantially the same function, and both reinforce the steel pipe main body 201, so that the reinforcing member 403 is arranged relatively lower, so that the connecting and reinforcing effect of the connecting steel pipe 5 can be ensured to have the advantages of partitioning from top to bottom and matching use, and the harmful problem that the connecting steel pipe 5 pulls and fixes the reinforcing member 403 and is not beneficial to reinforcing the steel pipe main body 201 is avoided.
The supporting steel pipe unit 2 further comprises a steel pipe hole 204 which is arranged on the steel pipe main body 201 and used for inserting and installing the steel pipe shear member 203, and the anchoring steel unit 4 further comprises a steel plate hole 404 which is arranged on the reinforcing member 403 and used for inserting and installing the steel pipe shear member 203.
In this embodiment, the number of the reinforcing members 403 may be 1 to 4, so that 1 to 4 rows of the steel pipe shear members 203 are also corresponding to the steel pipe main body 201, which ensures that each steel pipe shear member 203 can be inserted into the steel pipe hole 404 after passing through the steel pipe hole 204, so that the reinforcing members 403 have the following two fixing structures: firstly, the steel tube concrete 202 is poured and fixed; secondly, the steel tube shear pieces 203 are inserted and fixed, so that the reinforcing pieces 403 and the steel tube main body 201 are more integrated, and the final advantages of structural integrity and high strength are ensured.
The height of the upper end surface of the concrete filled steel tube 202 is higher than that of the upper surface of the concrete pouring block 6.
In the present embodiment, since the position between the steel pipe main body 201 and the upper surface of the concrete block 6 is the position where the force is most concentrated and the steel pipe main body 201 is most likely to fail by bending, the force causing the bending effect is "borne" by the steel pipe main body 201 and the concrete block 202 together in such a manner that the amount of concrete 202 poured is set relatively large and the upper end surface of the concrete block 202 is higher than the upper surface of the concrete block 6, so that the supporting strength of the supporting steel pipe unit 2 can be further enhanced.
The construction method of the connection structure capable of realizing the accurate positioning of the multi-limb concrete-filled steel tube space structure and the bearing platform sequentially comprises the following steps of:
s1, installing and connecting the anchoring steel unit 4, and pouring concrete on the anchoring steel unit 4 to form the concrete bearing platform 1 to obtain a concrete supporting base;
s2, mounting the steel body base unit 3 on the concrete support base to obtain a multi-limb steel pipe primary main body;
s3, mounting the steel pipe main body of the support steel pipe unit 2 and the connecting steel pipe 5 on the multi-limb steel pipe primary main body to obtain a multi-limb steel pipe middle-term main body;
s4, pouring the steel pipe concrete 202 in the supporting steel pipe unit 2 of the multi-limb steel pipe middle-stage main body to obtain a multi-limb steel pipe later-stage main body;
and S5, pouring the concrete pouring block 6 on the later-stage main body of the multi-limb steel pipe to obtain the final multi-limb steel pipe concrete structure.
In this embodiment, the steel tube shear member 203 is first inserted into the reinforcing member 403, and then the steel tube concrete 202 is poured, so that the structures of the anchoring steel unit 4 and the supporting steel tube unit 2 are fixed, and only at this time, the steel tube shear member cannot be greatly stressed, and can be used in cooperation with a temporary steel tube support frame.
The concrete filled steel tube 202 may be poured into the opening of the upper end of the steel tube main body 201.
Then, the connecting steel pipes 5 are welded, and finally the concrete casting blocks 6 are cast, so that a concrete "frame" is arranged on the outer side of the whole multi-limb steel pipe concrete structure, the overall strength of the multi-limb steel pipe concrete structure is further improved, and a load is required to be installed on the supporting steel pipe unit 2 when the multi-limb steel pipe concrete structure is used, so that the multi-limb steel pipe concrete structure can be put into use.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the appended claims.
Claims (8)
1. Can realize the connection structure of many limbs steel pipe concrete spatial structure and accurate location of cushion cap, its characterized in that: including concrete cushion cap (1), set up a plurality of support steel pipe unit (2) on concrete cushion cap (1), set up and be in on concrete cushion cap (1) and be located a plurality of support steel pipe unit (2) between steel body base unit (3), set up and be in concrete cushion cap (1) and be used for connecting the reinforcement support steel pipe unit (2) with anchor steel unit (4) of steel body base unit (3), set up and be in steel body base unit (3) with support steel pipe (5) between the steel pipe unit (2), and set up and be in on concrete cushion cap (1) and the upper surface is higher than connect the concrete placement piece (6) of steel pipe (5) upper end height.
2. The connection structure capable of realizing the accurate positioning of the multi-limb concrete filled steel tube space structure and the bearing platform according to claim 1, is characterized in that: the supporting steel pipe unit (2) comprises a steel pipe main body (201) with the lower end arranged on the upper surface of the concrete bearing platform (1) and used for installing the connecting steel pipe (5), steel pipe concrete (202) arranged in the steel pipe main body (201), and steel pipe shearing pieces (203) arranged on the steel pipe main body (201) and used for reinforcing connection in the concrete pouring block (6).
3. The connection structure capable of realizing the accurate positioning of the multi-limb concrete filled steel tube space structure and the bearing platform according to claim 1, is characterized in that: all the supporting steel pipe units (2) are arranged in a centrosymmetric manner relative to the steel body base unit (3).
4. The connection structure capable of realizing the accurate positioning of the multi-limb concrete filled steel tube space structure and the bearing platform according to claim 2, is characterized in that: the steel body base unit (3) comprises a base steel plate (301) arranged on the upper surface of the concrete bearing platform (1), a hemispherical steel block (302) arranged on the upper surface of the base steel plate (301) and on the spherical surface and used for installing the connecting steel pipe (5), and a base shear part (303) arranged on the hemispherical steel block (302) and used for reinforcing connection in the concrete pouring block (6).
5. The connection structure capable of realizing the accurate positioning of the multi-limb concrete filled steel tube space structure and the bearing platform according to claim 4, is characterized in that: the anchoring steel unit (4) comprises an anchoring bottom plate (401) arranged in the concrete bearing platform (1), a screw connection column (402) arranged at the middle position of the upper surface of the anchoring bottom plate (401) and used for being connected with the base steel plate (301), and a reinforcing piece (403) arranged at the side edge position of the upper surface of the anchoring bottom plate (401) and used for reinforcing the steel pipe main body (201) in a mode of inserting the steel pipe concrete (202).
6. The connection structure capable of realizing the accurate positioning of the multi-limb concrete filled steel tube space structure and the bearing platform according to claim 5, is characterized in that: the reinforcing piece (403) is formed steel or a steel rod.
7. The connection structure capable of realizing the accurate positioning of the multi-limb concrete filled steel tube space structure and the bearing platform according to claim 5, is characterized in that: the supporting steel pipe unit (2) further comprises a steel pipe hole (204) which is formed in the steel pipe main body (201) and used for inserting and installing the steel pipe shearing piece (203), and the anchoring steel unit (4) further comprises a steel plate hole (404) which is formed in the reinforcing piece (403) and used for inserting and installing the steel pipe shearing piece (203).
8. The connection structure capable of realizing the accurate positioning of the multi-limb concrete filled steel tube space structure and the bearing platform according to claim 2, is characterized in that: the height of the upper end surface of the steel tube concrete (202) is higher than that of the upper surface of the concrete pouring block (6).
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| CN202120896351.0U CN214883011U (en) | 2021-04-28 | 2021-04-28 | Connection structure capable of realizing accurate positioning of multi-limb concrete-filled steel tube space structure and bearing platform |
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| CN202120896351.0U CN214883011U (en) | 2021-04-28 | 2021-04-28 | Connection structure capable of realizing accurate positioning of multi-limb concrete-filled steel tube space structure and bearing platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022227177A1 (en) * | 2021-04-28 | 2022-11-03 | 福州大学 | Connection structure capable of achieving accurate positioning of multi-limb concrete-filled steel tube spatial structure and bearing platform, and construction method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022227177A1 (en) * | 2021-04-28 | 2022-11-03 | 福州大学 | Connection structure capable of achieving accurate positioning of multi-limb concrete-filled steel tube spatial structure and bearing platform, and construction method therefor |
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