CN219010936U - Steel pipe concrete pier connection structure of PBL shear key - Google Patents
Steel pipe concrete pier connection structure of PBL shear key Download PDFInfo
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- CN219010936U CN219010936U CN202222598534.1U CN202222598534U CN219010936U CN 219010936 U CN219010936 U CN 219010936U CN 202222598534 U CN202222598534 U CN 202222598534U CN 219010936 U CN219010936 U CN 219010936U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The utility model relates to a steel pipe concrete pier table connecting structure of a PBL shear key, which comprises a steel pipe pier and a pier bearing platform, wherein a bearing platform reinforcement cage is arranged in the pier bearing platform, a secondary pouring groove is arranged at the top of the pier bearing platform, a steel pipe pier connecting piece is embedded in the pier bearing platform, the steel pipe pier connecting piece comprises an embedded perforated steel plate and a plurality of PBL shear keys fixed at the bottom of the embedded perforated steel plate, the PBL shear keys are vertically arranged, the length of the PBL shear keys is matched with the distance from the bottom of the secondary pouring groove of the pier bearing platform to the bottom of the bearing platform reinforcement cage, the bottom of the PBL shear keys is fixed at the bottom of the bearing platform reinforcement cage, the top surface of the embedded perforated steel plate exposes the bottom surface of the secondary pouring groove, and the bottom of the steel pipe pier is fixed on the top surface of the embedded perforated steel plate.
Description
Technical Field
The utility model relates to a steel tube concrete pier table connecting structure of a PBL shear key.
Background
For the middle-small span municipal bridge, the construction quality of the conventional cast-in-place concrete bridge pier is difficult to ensure due to the template construction and construction environment limitation, and along with the promotion of urban road construction in China in recent years, construction is carried out in a heavy traffic area to become a normal state, so that the interference of bridge construction on surrounding traffic is relieved, and a construction mode with high construction speed and green low carbon is urgently needed; the steel pipe structure can be used as a bearing structure and can be directly used as a template for pouring concrete, the steel pipe structure is utilized and concrete is poured in the steel pipe, so that core concrete can be restrained, the bearing capacity of the structure is improved, the steel pipe structure has higher economical efficiency and environmental friendliness, the technical problems can be solved, but when the steel pipe concrete structure is applied to a bridge structure, the bridge pier bearing platform is generally a reinforced concrete structure, and the technical problem to be solved is how to reliably connect the steel pipe concrete bridge pier with the concrete bridge pier bearing platform.
Disclosure of Invention
The utility model solves the defects of the prior art and provides the steel tube concrete pier table connecting structure of the PBL shear key for improving the pulling resistance and the shearing resistance of the connecting structure of the steel tube concrete pier and the concrete pier bearing table.
In order to achieve the above purpose, the utility model firstly provides a steel pipe concrete pier table connecting structure of a PBL shear key, which comprises a steel pipe pier and a pier bearing platform, wherein a bearing platform reinforcement cage is arranged in the pier bearing platform, a secondary pouring groove is formed in the top of the pier bearing platform, a steel pipe pier connecting piece is embedded in the pier bearing platform, the steel pipe pier connecting piece comprises an embedded perforated steel plate and a plurality of PBL shear keys fixed at the bottom of the embedded perforated steel plate, the PBL shear keys are vertically arranged, the length of each PBL shear key is matched with the distance from the bottom of the secondary pouring groove of the pier bearing platform to the bottom of the bearing platform reinforcement cage, the bottom of each PBL shear key is fixed at the bottom of the bearing platform reinforcement cage, the top surface of the embedded perforated steel plate exposes the bottom of the secondary pouring groove, the bottom of the steel pipe pier is fixed on the top surface of the embedded perforated steel plate, the inner cavity of the steel pipe pier is connected with the pier bearing platform through a through hole in the embedded perforated steel plate, concrete is filled in the steel pipe pier, and secondary pouring concrete is poured between the secondary pouring groove and the steel pipe pier.
By adopting the structure, the embedded perforated steel plate is connected with the PBL shear key, the pulling and shearing strength of the steel pipe pier connecting piece is improved, the occurrence of unstable damage of the steel structure pier due to eccentric stress is avoided, after the steel pipe pier is installed, concrete can be poured as a template, and the concrete in the steel pipe pier can enter into the pier bearing platform through the through hole on the embedded perforated steel plate, so that the steel pipe pier is connected with the pier bearing platform into a whole, and the convenience of construction is improved while the construction is facilitated.
In this embodiment, a plurality of anchor stiffening plates are welded between the outer side surface of the steel pipe pier and the pre-buried perforated steel plate, and the plurality of anchor stiffening plates are symmetrically distributed by taking the steel pipe pier as a center.
In this embodiment, the top surface of the secondary casting concrete is flush with the top surface of the pier bearing platform.
In this embodiment, the PBL shear key includes L type PBL shear key and I type PBL shear key, the cross section of L type PBL shear key is L type, the cross section of I type PBL shear key is a style of calligraphy, the top and the bottom of L type PBL shear key and I type PBL shear key all weld the horizontal stiffening plate. By adopting the structure, compared with the prior art, the device is additionally provided with the L-shaped PBL shear key, and the bottom of the L-shaped PBL shear key of the I-shaped shear key is additionally provided with the horizontal stiffening plate, so that the overall pulling resistance is improved.
In this embodiment, the horizontal stiffening plate in top of L type PBL shear force bond and I type PBL shear force bond passes through friction type bolt fastening on pre-buried trompil steel sheet, L type PBL shear force bond and I type PBL shear force bond bottom passes through horizontal stiffening plate welding on the cushion cap steel reinforcement cage of pier cushion cap. The PBL shear key is connected with the embedded steel plate by the friction type bolt, so that the on-site assembly construction can be facilitated, and the reliability and stability of stress are improved by mechanical connection.
In this embodiment, the L-type PBL shear keys are disposed at the four corners of the pre-buried perforated steel plate, the I-type PBL shear keys are disposed between two adjacent L-type PBL shear keys, and the cross section of the overall structure formed by the L-type PBL shear keys and the I-type PBL shear keys after being disposed is matched with the shape of the pre-buried perforated steel plate.
In summary, the connection of the embedded perforated steel plate and the PBL shear key improves the anti-pulling and anti-shearing strength of the steel pipe pier connecting piece, avoids the occurrence of unstable damage of the steel structure pier due to eccentric stress, utilizes the friction type bolt to connect the PBL shear key and the embedded steel plate, improves the reliability and stability of stress through mechanical connection, facilitates field installation and construction, and additionally arranges the horizontal stiffening plates at the bottoms of the L-type PBL shear key and the I-type PBL shear key, improves the anti-pulling and anti-shearing strength at the pier connecting joint, ensures the anti-pulling and anti-shearing strength at the joint of the steel pipe pier and the concrete pier bearing platform, and facilitates field installation and construction.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the pre-buried steel plate of the present utility model.
Fig. 3 is a schematic structural view of an L-type PBL shear key of the present utility model.
Fig. 4 is a schematic structural view of the type I PBL shear key of the present utility model.
Fig. 5 is a schematic structural diagram of the pre-buried steel plate and the PBL shear key of the present utility model after connection.
FIG. 6 is a schematic view of the structure of the bearing platform of the present utility model before secondary casting of concrete.
Fig. 7 is a schematic structural view of the bearing platform of the present utility model after secondary concrete casting.
In the figure, 1, a steel pipe pier; 2. anchoring the stiffening plate; 3. friction type bolts; 4. pre-burying an open-pore steel plate; 5. an L-shaped PBL shear key; 6. type I PBL shear key; 7. bridge pier bearing platform; 8. concrete is filled in the steel tube; 9. secondary concrete pouring; 10. pile foundation; 11. bearing platform reinforcement cage.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
As shown in fig. 1 to 7, the utility model provides a steel tube concrete pier table connection structure of a PBL shear key, which comprises a steel tube pier 1, a pier bearing platform 7 and a pile foundation 10, wherein a bearing platform reinforcement cage 11 is arranged in the pier bearing platform 7, the pier bearing platform 7 is fixed on the pile foundation 10, a secondary pouring groove is formed in the top of the pier bearing platform 7, a steel tube pier connection piece is embedded in the pier bearing platform 7, the steel tube pier connection piece comprises an embedded perforated steel plate 4 and a plurality of PBL shear keys fixed at the bottom of the embedded perforated steel plate 4, a through hole is formed in the middle of the embedded perforated steel plate 4, the PBL shear keys are vertically distributed, the length of the PBL shear keys is matched with the distance from the bottom of the secondary pouring groove of the pier bearing platform 7 to the bottom of the bearing platform reinforcement cage 11, the bottom of the PBL shear keys is welded at the bottom of the bearing platform reinforcement cage 11, the top of the embedded perforated steel tube bearing platform 4 is exposed out of the bottom of the secondary pouring groove, the bottom of the steel tube pier 1 is welded on the top of the pre-embedded perforated steel plate 4, the inner cavity of the steel tube pier 1 is connected with the pier 7 through the through hole on the embedded perforated steel plate 4, the embedded perforated steel plate 9 is welded with the steel tube pier 1, the secondary concrete bridge 9 is welded with the top of the steel tube 2, and the top surface of the steel tube 2 is welded with the stiffening steel tube 2 is welded with the top of the secondary concrete bridge pier 2, and the top surface 9 is welded with the top of the bridge pier 2.
The PBL shear key comprises an L-type PBL shear key 5 and an I-type PBL shear key 6, the cross section of the L-type PBL shear key 5 is L-shaped, the cross section of the I-type PBL shear key 6 is L-shaped, horizontal stiffening plates are welded at the tops and bottoms of the L-type PBL shear key 5 and the I-type PBL shear key 6, the top horizontal stiffening plates of the L-type PBL shear key 5 and the I-type PBL shear key 6 are fixed on the embedded perforated steel plate 4 through friction bolts 3, the friction bolts 3 are high-strength bolts, and the bottoms of the L-type PBL shear key 5 and the I-type PBL shear key 6 are welded on a bearing platform reinforcement cage 11 of a bearing platform 7 through the horizontal stiffening plates.
The L-shaped PBL shear keys 5 are arranged at the positions of four corners of the embedded perforated steel plate 4, the I-shaped PBL shear keys 6 are arranged between two adjacent L-shaped PBL shear keys 5, and the cross section of an integral structure formed after the L-shaped PBL shear keys 5 and the I-shaped PBL shear keys 6 are arranged is matched with the shape of the embedded perforated steel plate 4.
During construction, firstly, stress analysis is carried out, and the pier bearing platform 7 is calculated and designed according to the stress condition and the design specification; the size and thickness of the pre-buried perforated steel plate 4 are specifically designed according to the stress and the size of the root of the pier, and meet the requirements of the root size and the shape of the steel pipe pier 1; the number of the PBL shear keys, the spacing and the size of the holes are designed according to practical requirements, so that the PBL shear keys are convenient to construct and do not conflict with the bearing platform reinforcement cage 11; the size of the steel pipe pier 1 is calculated and designed according to the stress condition and the design specification.
The embedded perforated steel plate 4 is connected with the L-type PBL shear key 5 and the I-type PBL shear key 6 through friction bolts 3, the bearing platform reinforcement cage 11 is finished on site, the bearing platform reinforcement cage 11 is placed at a designated position, the L-type PBL shear key 5 and the I-type PBL shear key 6 extend into the bearing platform reinforcement cage, the bottom horizontal stiffening plate of the PBL shear key is welded with the bottom layer reinforcement angle of the bearing platform reinforcement cage 11, and the embedded perforated steel plate 4 is welded with the top reinforcement angle of the bearing platform reinforcement cage 11. The L-shaped PBL shear keys 5 are arranged at four corners of the embedded perforated steel plate 4, the I-shaped PBL shear keys 6 are arranged in the four straight edge directions of the embedded perforated steel plate 4, and the number and arrangement of the PBL shear keys are designed according to actual requirements, so that the shear strength is ensured. When the top layer steel bars in the bearing platform steel bar cage 11 interfere with the steel pipe pier 1, the steel bars can be cut off according to the outline of the pier column and firmly welded on the outer surface of the steel pipe pier 1. After the pre-buried perforated steel plate 4 of the PBL shear key is installed in place, the pier bearing platform 7 can be subjected to primary concrete pouring.
The steel pipe pier 1 and the embedded perforated steel plate 4 are welded, and the anchoring stiffening plate 2 welded between the steel pipe pier 1 and the embedded perforated steel plate 4 forms a whole with the steel pipe pier 1 and the embedded perforated steel plate 4, so that the steel pipe pier 1 is fixed.
And finally, carrying out secondary pouring on the joint of the steel pipe pier 1 and the pier bearing platform 7 to form an integral structure, further enhancing the connection effect of the pier nodes, and carrying out outsourcing on the node steel structure to prevent the exposed steel structure from being rusted. The steel pipe pier 1 after the installation can be used as a casting concrete template, and concrete is filled in the steel pipe pier 1.
The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather utilizing equivalent structural changes made in the present utility model description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present utility model.
Claims (5)
1. The utility model provides a steel pipe concrete pier platform connection structure of PBL shear force key, includes steel pipe pier (1) and pier cushion cap (7), laid cushion cap steel reinforcement cage (11), its characterized in that in pier cushion cap (7): the steel pipe bridge pier connecting piece comprises an embedded perforated steel plate (4) and a plurality of PBL shear keys fixed at the bottom of the embedded perforated steel plate (4), the PBL shear keys are vertically arranged, the lengths of the PBL shear keys are matched with the distance from the bottom of the secondary pouring groove of the bridge pier (7) to the bottom of a bearing platform reinforcement cage (11), the bottom of the PBL shear keys is fixed at the bottom of the bearing platform reinforcement cage (11), the top surface of the embedded perforated steel plate (4) is exposed out of the bottom surface of the secondary pouring groove, and the bottom of the steel pipe bridge pier (1) is fixed on the top surface of the embedded perforated steel plate (4) so that the inner cavity of the steel pipe bridge pier (1) is connected with the bridge pier (7) through a through hole on the embedded perforated steel plate (4), concrete is filled in the steel pipe bridge pier (1), and secondary pouring concrete (9) is poured between the secondary pouring groove and the steel pipe bridge pier (1);
the PBL shear key comprises an L-type PBL shear key (5) and an I-type PBL shear key (6), the cross section of the L-type PBL shear key (5) is L-shaped, the cross section of the I-type PBL shear key (6) is in a straight shape, and horizontal stiffening plates are welded at the top and the bottom of the L-type PBL shear key (5) and the I-type PBL shear key (6).
2. The concrete filled steel tube pier connection structure of the PBL shear key of claim 1, wherein: a plurality of anchoring stiffening plates (2) are welded between the outer side face of the steel pipe bridge pier (1) and the pre-buried perforated steel plate (4), and the anchoring stiffening plates (2) are symmetrically distributed by taking the steel pipe bridge pier (1) as a center.
3. The concrete filled steel tube pier connection structure of the PBL shear key of claim 1, wherein: the top surface of the secondary pouring concrete (9) is flush with the top surface of the pier bearing platform (7).
4. A concrete filled steel tube pier connection structure of a PBL shear key according to any one of claims 1 to 3, wherein: the top horizontal stiffening plates of the L-type PBL shear key (5) and the I-type PBL shear key (6) are fixed on the embedded perforated steel plate (4) through friction bolts (3), and the bottoms of the L-type PBL shear key (5) and the I-type PBL shear key (6) are welded on a bearing platform reinforcement cage (11) of a pier bearing platform (7) through the horizontal stiffening plates.
5. The concrete filled steel tube pier connection structure of the PBL shear key of claim 4, wherein: the L-shaped PBL shear keys (5) are arranged at the positions of four corners of the embedded perforated steel plate (4), the I-shaped PBL shear keys (6) are arranged between two adjacent L-shaped PBL shear keys (5), and the cross section of an integral structure formed after the L-shaped PBL shear keys (5) and the I-shaped PBL shear keys (6) are arranged is matched with the shape of the embedded perforated steel plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222598534.1U CN219010936U (en) | 2022-09-29 | 2022-09-29 | Steel pipe concrete pier connection structure of PBL shear key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222598534.1U CN219010936U (en) | 2022-09-29 | 2022-09-29 | Steel pipe concrete pier connection structure of PBL shear key |
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| Publication Number | Publication Date |
|---|---|
| CN219010936U true CN219010936U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222598534.1U Active CN219010936U (en) | 2022-09-29 | 2022-09-29 | Steel pipe concrete pier connection structure of PBL shear key |
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| Country | Link |
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| CN (1) | CN219010936U (en) |
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- 2022-09-29 CN CN202222598534.1U patent/CN219010936U/en active Active
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