CN221000584U - No cushion cap steel pipe concrete BRB shock attenuation frame pier - Google Patents
No cushion cap steel pipe concrete BRB shock attenuation frame pier Download PDFInfo
- Publication number
- CN221000584U CN221000584U CN202322605675.6U CN202322605675U CN221000584U CN 221000584 U CN221000584 U CN 221000584U CN 202322605675 U CN202322605675 U CN 202322605675U CN 221000584 U CN221000584 U CN 221000584U
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- Prior art keywords
- steel pipe
- concrete
- brb
- section steel
- reinforced concrete
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 94
- 239000010959 steel Substances 0.000 title claims abstract description 94
- 239000004567 concrete Substances 0.000 title claims abstract description 48
- 230000035939 shock Effects 0.000 title claims description 7
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 26
- 238000013016 damping Methods 0.000 claims abstract description 3
- 239000011148 porous material Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000008846 dynamic interplay Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a steel pipe concrete BRB damping frame pier without a bearing platform, which comprises a steel pipe concrete column, a reinforced concrete column and a reinforced concrete pile foundation; internode cross beams are arranged from top to bottom between the steel pipe concrete columns and are connected into a whole; BRB supports are longitudinally and transversely arranged on the internode cross beams; two pile top tie beams are arranged on the reinforced concrete pile tops; the concrete label filled in the steel tube is higher than the concrete label outside the steel tube. The utility model has the advantages of good anti-seismic performance and high bearing capacity.
Description
Technical Field
The utility model relates to the technical field of bridge engineering, in particular to a steel pipe concrete BRB damping frame pier without a bearing platform.
Background
In the prior art, for ultra-high pier bridges, rectangular thin-wall hollow piers are mostly adopted as a lower structure to be matched with a large-volume bearing platform and pile group foundations, steel cofferdams (especially deep water foundations, steel hanging box cofferdams are required to be adopted), bearing platform construction can be carried out after pouring back cover concrete, and the working procedure is complex and the danger is high. If the geological conditions are poor, the number of piles is larger, and correspondingly, the size of the bearing platform is larger, so that the mass of the large-volume bearing platform is much larger than that of the pier body. The quality of the bearing platform directly influences the earthquake reaction of the pile foundation, and the larger the quality of the bearing platform is, the larger the earthquake reaction of the pile foundation is. The deep water foundation is generally a high pile cap, the shallow water foundation also becomes the high pile cap under the conditions of hydrologic flushing, sand liquefaction and the like, the dynamic interaction between the high pile cap foundation and the pier is realized, the seismic response of the structure is amplified, and the engineering quantity of the foundation is further increased.
Disclosure of utility model
Aiming at the problems, the utility model provides the bridge pier with the steel pipe concrete BRB shock-absorbing frame without the bearing platform, which has the advantages of good shock resistance and high bearing capacity.
A cap-free steel pipe concrete BRB shock absorbing frame pier comprising: the steel pipe concrete column, reinforced concrete pile foundation, internode crossbeam, set up the BRB support between vertical crossbeam and between the transverse beam, reinforced concrete bored concrete pile basis and pile top crossbeam, wherein:
the steel tube concrete column comprises a first constant cross section steel tube, a variable cross section steel tube and a second constant cross section steel tube; the first uniform cross section steel pipe is connected with the second uniform cross section steel pipe through the variable cross section steel pipe to form an integral hollow tubular structure; the inner dimension of the first uniform section steel pipe is smaller than that of the second uniform section steel pipe; the lower end of the first uniform section steel pipe and the upper end of the second uniform section steel pipe are provided with a perforated baffle;
the steel pipe concrete column is vertically provided with an internode beam to form a frame structure, a second steel pipe with a uniform cross section at the bottom of the frame structure is inserted into the steel pipe concrete column, and an open-pore steel plate shear connector is arranged on the outer wall of the steel pipe inserted into the steel pipe concrete column; the reinforced concrete bored pile foundation is connected with the pier bottom reinforced concrete column, and the top surface of the reinforced concrete pile foundation is provided with a pile top beam.
Preferably, the second steel pipes with equal cross section at the bottom of the frame structure are inserted into the reinforced concrete column, and the outer walls of the inserted parts are welded with perforated steel plates and stiffening steel bars to strengthen the connection with the concrete.
Preferably, the steel tube concrete column is internally filled with high-grade concrete, and the concrete grade adopted by the steel tube concrete column is higher than that adopted by the reinforced concrete column and the reinforced concrete pile base.
In the structural form provided by the utility model, the main pier adopts a steel pipe concrete frame form, so that the weight of a high pier body is greatly reduced, and the foundation load is reduced; the frame column can be directly connected with the upper structure upwards without the transition of a pier cap, so that the structure is simple and the construction is convenient; the frame column can be directly connected with the oversized diameter pile foundation downwards, a large-volume bearing platform is not needed for transition, construction is convenient, and foundation load is further reduced. In addition, the BRB buckling restrained brace can improve the horizontal resistance of the frame pier, well control the structural rigidity and reduce the earthquake reaction; the foundation has no large-volume bearing platform, the horizontal earthquake force borne by the pile foundation is greatly reduced, and a large number of permanent steel pile casings are not required to participate in the pile foundation stress; the scouring depth is small, and the pile foundation bearing efficiency is obviously improved.
Drawings
FIG. 1 is a structural elevation of an embodiment of a concrete filled steel tube BRB shock absorbing frame pier without caps;
FIG. 2 is a structural side view of an embodiment of a cap-less concrete filled steel tube BRB shock absorbing frame pier;
FIG. 3 is a cross-sectional view A-A of the concrete filled steel tube BRB frame pier embodiment of FIG. 1 without the abutment;
FIG. 4 is a cross-sectional view B-B of the abutment embodiment of the concrete filled steel tube BRB framework of FIG. 1 without the abutment;
FIG. 5 is a schematic view of BRB support for an embodiment of a concrete filled steel tube BRB frame pier without a cap;
FIG. 6 is a schematic view of an open-celled steel plate shear connector for an embodiment of a concrete filled steel tubular BRB frame pier;
FIG. 7 is a schematic view of a perforated spacer of an embodiment of a concrete filled steel tube BRB frame pier without a cap;
Wherein: 1-a first constant-section steel pipe; 2-a variable cross-section steel pipe; 3-a second steel pipe with equal cross section; 4-high grade concrete; 5-BRB support; 6-internode beams; 7-pier top BRB support; 8-reinforced concrete columns; 9-reinforced concrete bored pile; 10-pile top cross beams; 11-perforated steel sheet; 12-reinforcing steel bars; 13-perforated separator.
Detailed Description
The concrete filled steel tube BRB shock-absorbing frame pier without the bearing platform is further described in detail below with reference to the accompanying drawings and specific embodiments:
Examples:
Referring to fig. 1 and 2, a platform-free steel pipe concrete BRB frame pier comprises square steel pipe concrete columns, internode beams arranged between the columns, BRB supports arranged between longitudinal and transverse pier beams, reinforced concrete columns, reinforced concrete bored pile foundations and pile top beams arranged on the top surface of a pile foundation. The steel pipe concrete column comprises a first uniform section steel pipe 1, a variable section steel pipe 2 and a second uniform section steel pipe 3. The lower part of the constant section steel pipe 3 is inserted into the reinforced concrete column 8, and is connected to the reinforcing steel bars 12 through the perforated steel plate 11. The steel pipe concrete column is provided with internode beams 6 from top to bottom at certain intervals; the first internode is provided with a pier top BRB support 7, and the rest internodes are provided with BRB supports 5; the pile top of the reinforced concrete bored pile 9 is provided with a pile top cross beam 10; the high-grade concrete 4 is adopted as the concrete filled in the steel pipe, and the low-grade concrete is adopted as the reinforced concrete column and the pile foundation.
As shown in fig. 1 and 2, the first uniform section steel pipe 1 is connected to the second uniform section square steel pipe 3 via the variable section steel pipe 2, and a perforated partition 13 is provided at the lower end of the first uniform section steel pipe 1 and at the upper end of the second uniform section steel pipe 3, respectively.
Referring to fig. 3, the second constant section steel tube 3 forms a frame with the internode beams 6.
Referring to fig. 4, the second equal cross section steel tube 3 is inserted into the reinforced concrete column 8, meanwhile, an open pore steel plate 11 is welded on the outer wall of the second equal cross section steel tube 3, and stiffening steel bars 12 are inserted into the open pore steel plate, so that the connection between the steel tube and the reinforced concrete column is ensured.
Referring to fig. 5, BRB supports 5 are provided between the internode beams 6, and a pier top BRB support 7 is provided at the first internode of the pier top.
Claims (2)
1. The utility model provides a no cushion cap steel pipe concrete BRB shock attenuation frame pier which characterized in that includes: the steel pipe concrete column, reinforced concrete pile foundation, internode crossbeam, set up the BRB support between vertical crossbeam and between the transverse beam, reinforced concrete bored concrete pile basis and pile top crossbeam, wherein:
the steel tube concrete column comprises a first constant cross section steel tube, a variable cross section steel tube and a second constant cross section steel tube; the first uniform cross section steel pipe is connected with the second uniform cross section steel pipe through the variable cross section steel pipe to form an integral hollow tubular structure; the inner dimension of the first uniform section steel pipe is smaller than that of the second uniform section steel pipe; the lower end of the first uniform section steel pipe and the upper end of the second uniform section steel pipe are provided with a perforated baffle;
the steel pipe concrete column is vertically provided with an internode beam to form a frame structure, a second steel pipe with a uniform cross section at the bottom of the frame structure is inserted into the steel pipe concrete column, and an open-pore steel plate shear connector is arranged on the outer wall of the steel pipe inserted into the steel pipe concrete column; the reinforced concrete bored pile foundation is connected with the pier bottom reinforced concrete column, and the top surface of the reinforced concrete pile foundation is provided with a pile top beam.
2. The abutment-free steel tube concrete BRB vibration-damping frame pier according to claim 1, characterized in that the second steel tube with equal cross section at the bottom of the frame structure is inserted into the reinforced concrete column, and the outer wall of the inserted portion is welded with perforated steel plates and stiffening bars to strengthen the connection with the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322605675.6U CN221000584U (en) | 2023-09-25 | 2023-09-25 | No cushion cap steel pipe concrete BRB shock attenuation frame pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322605675.6U CN221000584U (en) | 2023-09-25 | 2023-09-25 | No cushion cap steel pipe concrete BRB shock attenuation frame pier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221000584U true CN221000584U (en) | 2024-05-24 |
Family
ID=91116298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322605675.6U Active CN221000584U (en) | 2023-09-25 | 2023-09-25 | No cushion cap steel pipe concrete BRB shock attenuation frame pier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221000584U (en) |
-
2023
- 2023-09-25 CN CN202322605675.6U patent/CN221000584U/en active Active
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