CN215441415U - Quick-connect combined column pier structure - Google Patents
Quick-connect combined column pier structure Download PDFInfo
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- CN215441415U CN215441415U CN202120813818.0U CN202120813818U CN215441415U CN 215441415 U CN215441415 U CN 215441415U CN 202120813818 U CN202120813818 U CN 202120813818U CN 215441415 U CN215441415 U CN 215441415U
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Abstract
The utility model relates to the technical field of bridge engineering, in particular to a quick-connection combined column pier structure. The prefabricated bridge pier is installed on the prefabricated bearing platform, and the prefabricated bearing platform and the prefabricated bridge pier are respectively provided with square steel tube shear keys on each connecting surface and are matched with each other to be positioned. The pier body and the bearing platform are connected by adopting a grouting metal corrugated pipe and a square steel pipe shear connector, so that on one hand, quick connection can be realized by utilizing the directly inserted grouting metal corrugated pipe, and the internal grouting can be ensured to be compact; on the other hand, the square steel tube shear connector can avoid slippage between steel tubes, and can play a role in overturning resistance. In addition, the RUHPC is adopted as the external mold of the pier, so that the use of a steel template is greatly reduced, the problems of carbonization of a concrete protective layer of the pier, corrosion and bulging of reinforcing steel bars and the like can be avoided, the later-stage maintenance cost can be reduced, and the method has a wide engineering application prospect.
Description
Technical Field
The utility model relates to the technical field of bridge engineering, in particular to a quick-connection combined column pier structure.
Background
With the rapid development of traffic infrastructure, bridge assembly and industrialization are the trends of national development strategy and industry upgrading. The prefabricated bridge construction technology also starts to be researched and applied gradually in the bridge pier, and research shows that the defects of the assembly type structure mainly include that the connection joint is poor in stability and easy to slip.
Disclosure of Invention
The utility model aims to provide a quick-connection combined pier structure to improve the integrity of a combined pier.
The utility model is realized by the following steps:
the utility model provides a quick connect's combination pier structure, includes prefabricated cushion cap, prefabricated pier install in on the prefabricated cushion cap, prefabricated cushion cap with prefabricated pier is fixed a position through connecting the face and setting up square steel pipe shear force key respectively and mutually supporting at each.
And the square steel pipe shear keys arranged on the connecting surface of the prefabricated bearing platform and the connecting surface form a groove shape for the insertion and matching of the other steel pipe shear keys, and the other steel pipe shear keys are fixed at the bottom of the prefabricated pier and are partially embedded into the prefabricated pier.
Concrete is poured into the other steel pipe shear key.
The prefabricated bridge pier is characterized in that a ribbed longitudinal rib and a stirrup used for positioning and supporting are arranged in an outer die of the prefabricated bridge pier, and the part of the ribbed longitudinal rib extending out of the outer die is connected with a metal corrugated pipe embedded in the prefabricated bearing platform in a grouting mode.
The outer mold is cast by adopting ultra-high performance concrete.
The metal corrugated pipe is fixed through ribbed steel bars pre-buried in the prefabricated bearing platform.
The grouting connection is poured by adopting ultrahigh-performance mortar.
The internal mold of the prefabricated bridge pier is provided with longitudinal ribs with ribs and stirrups for positioning and supporting, and common concrete is poured.
And the prefabricated bridge pier is provided with an ultrahigh-performance mortar layer on the connecting surface before assembly.
The utility model has the advantages that: the utility model provides a Reinforced ultra-high performance concrete (RUHPC) Reinforced Concrete (RC) combined column pier structure capable of being quickly connected. The pier body and the bearing platform are connected by adopting a grouting metal corrugated pipe and a square steel pipe shear connector, so that on one hand, quick connection can be realized by utilizing the directly inserted grouting metal corrugated pipe, and the internal grouting can be ensured to be compact; on the other hand, the square steel tube shear connector can avoid slippage between steel tubes, and can play a role in overturning resistance. In addition, the RUHPC is adopted as an external die of the bridge pier, so that the use of a steel template is greatly reduced, the problems of carbonization of a concrete protective layer of the bridge pier, corrosion and bulging of reinforcing steel bars and the like can be solved, the later-stage maintenance cost can be reduced, the low-carbon, green and environment-friendly concept advocated by the nation is met, and the method has a wide engineering application prospect.
The concrete advantages are as follows:
(1) the adoption of the square steel tube shear keys can avoid the slippage phenomenon between the pier body steel tube shear keys and the bearing platform steel tube shear keys, so that the connection between the pier body and the bearing platform is firmer; in addition, the problem of pier body collapse during construction can be well prevented by using the square steel tube shear key, the square steel tube shear key can play a role in resisting overturning, and meanwhile, the integrity of the combined pier is improved;
(2) the connection of the metal corrugated pipes is adopted, so that the problem of weak joint connection is solved, the quality is controllable during construction, and the common problems of grouting sleeve connection, such as whether the sleeve is filled with grouting materials or not, and the shrinkage of the grouting materials, can be solved;
(3) the exterior of the pier body adopts RUHPC, so that on one hand, a large number of templates can be saved, and the templates do not need to be removed after construction; on the other hand, the durability and the bearing capacity of the combined column pier can be improved, and only a thin layer of UHPC is adopted outside the pier body, so that the maintenance cost can be greatly reduced in the application period;
(4) the structure of the utility model is convenient and fast to construct and has better safety.
Drawings
The utility model will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a top view of a prefabricated platform.
Description of reference numerals: 1. the structure comprises a UHPC outer die inner stirrup, 2, UHPC, 3 and 4 outer die inner ribbed longitudinal bars, 5 and RC inner ribbed longitudinal bars, 6/7, concrete, 8 and pier body embedded square steel tube shear keys, 9/11 ultrahigh-performance mortar, 10 and extension ribbed longitudinal bars in the UHPC outer die, 12 and cushion cap embedded square steel tube shear keys, 13 and cushion cap embedded metal corrugated pipes, 14 and cushion cap embedded ribbed steel bars, 15 and a cushion cap.
Detailed Description
Referring to fig. 1-3, the rapidly connected combined pier structure comprises a prefabricated bearing platform and a prefabricated pier, wherein the prefabricated pier is installed on the prefabricated bearing platform, and the contact surface of the prefabricated bearing platform and the prefabricated pier is positioned through a square steel tube shear key.
And arranging an embedded square steel pipe shear key 12 on the contact surface of the prefabricated bearing platform to form a groove shape with the contact surface, inserting and matching the other steel pipe shear key 8, fixing the other steel pipe shear key 8 at the bottom of the prefabricated pier, and partially embedding the other steel pipe shear key into the prefabricated pier. Concrete is poured into the other steel pipe shear key 8.
The outer die and the inner core of the prefabricated bridge pier are provided with a plurality of ribbed longitudinal ribs and stirrups for positioning and supporting, and the ribbed longitudinal ribs extending out of the outer die are connected with the metal corrugated pipes 13 pre-buried in the prefabricated bearing platform in a grouting mode. The metal corrugated pipe 13 is fixed through ribbed steel bars pre-buried in the prefabricated bearing platform.
The outer mold is poured by adopting ultra-high performance concrete UHPC, and the inner core is poured by adopting common concrete.
The assembly method comprises the following steps:
prefabricating a bearing platform 15, positioning and fixing a metal corrugated pipe 13 and a square steel pipe shear key 12 with a steel bar of the bearing platform 15 in advance, fixing a pre-embedded ribbed steel bar 14 of the bearing platform with the metal corrugated pipe 13, sealing the interiors of the metal corrugated pipe 13 and the square steel pipe shear key 12, avoiding the interior from being blocked when concrete is poured, and pouring bearing platform concrete after the concrete is poured;
and secondly, binding the steel bars 1 and 3 in the UHPC 2 of the pier body and the steel bars 4 and 5 in the concrete, positioning and fixing the square steel tube shear key 8 of the pier body, pouring the UHPC 2 after the completion of the positioning, pouring the concrete 6 and the internal concrete 7 of the square steel tube shear key 8 of the pier body after the maintenance is completed, and maintaining after the pouring is completed.
Thirdly, assembling the pier body and the bearing platform 15, pouring ultrahigh-performance mortar 11 into the metal corrugated pipe 13 pre-embedded in the bearing platform before assembly, simultaneously smearing a layer of ultrahigh-performance mortar 9 on the pier body (so that the combination is tighter), positioning by using the shear key 8 of the square steel pipe of the pier body, inserting the ribbed longitudinal rib 10 extending in the UHPC into the metal corrugated pipe 13, and leveling in the construction process to avoid assembling inclination.
And fourthly, finally maintaining the assembled RUHPC-RC combined column pier.
Note that:
(1) the bearing platform supports the formwork and binds the bearing platform reinforcing steel bars, meanwhile, the shear keys of the square steel pipe and the metal corrugated pipe are positioned and fixed, the interior of the square steel pipe and the interior of the metal corrugated pipe are ensured not to be flowed in by concrete before the concrete of the bearing platform is poured, and the smooth assembly in the later period is ensured.
(2) And binding reinforcement cages in the UHPC outer die in advance before casting in a precast site, and reserving a protective layer, wherein care is needed for maintenance of the UHPC, and maintenance under the condition of too low temperature should be avoided.
(3) Can carry out the ligature of the inside reinforcing bar of concrete when the inside reinforcing bar of ligature UHPC, will fix a position pier shaft square steel tube shear force key in advance simultaneously and fixed, can pour inside concrete after treating that UHPC maintenance is accomplished, pier shaft square steel tube shear force key is inside also to pour the concrete to it is closely knit and even to ensure to pour into.
(4) Assemble between pier shaft and the cushion cap, need fill the ultra high performance mortar in the corrugated metal pipe before the assembly, utilize square steel pipe shear force key to fix a position, insert the ribbed longitudinal bar that extends in the RUHPC in the corrugated metal pipe, square steel pipe shear force key can also play fixed effect, can be fine avoid the pier shaft to take place to overturn.
Although specific embodiments of the utility model have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the utility model, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the utility model, which is to be limited only by the appended claims.
Claims (9)
1. The utility model provides a quick connection's combination pier structure, includes prefabricated cushion cap, prefabricated pier install in on the prefabricated cushion cap, its characterized in that: the prefabricated bearing platform and the prefabricated bridge pier are positioned by respectively arranging square steel tube shear keys on each connecting surface and mutually matching the shear keys.
2. The quick connect modular pier construction of claim 1, wherein: and the square steel pipe shear keys arranged on the connecting surface of the prefabricated bearing platform and the connecting surface form a groove shape for the insertion and matching of the other steel pipe shear keys, and the other steel pipe shear keys are fixed at the bottom of the prefabricated pier and are partially embedded into the prefabricated pier.
3. The quick connect modular pier construction of claim 2, wherein: concrete is poured into the other steel pipe shear key.
4. The quick connect modular pier construction of claim 1, wherein: the prefabricated bridge pier is characterized in that a ribbed longitudinal rib and a stirrup used for positioning and supporting are arranged in an outer die of the prefabricated bridge pier, and the part of the ribbed longitudinal rib extending out of the outer die is connected with a metal corrugated pipe embedded in the prefabricated bearing platform in a grouting mode.
5. The quick connect modular pier construction of claim 4, wherein: the outer mold is cast by adopting ultra-high performance concrete.
6. The quick connect modular pier construction of claim 4, wherein: the metal corrugated pipe is fixed through ribbed steel bars pre-buried in the prefabricated bearing platform.
7. The quick connect modular pier construction of claim 4, wherein: the grouting connection is poured by adopting ultrahigh-performance mortar.
8. The quick connect modular pier construction of claim 4, wherein: the internal mold of the prefabricated bridge pier is provided with longitudinal ribs with ribs and stirrups for positioning and supporting, and common concrete is poured.
9. The quick connect modular pier construction of claim 1, wherein: and the prefabricated bridge pier is provided with an ultrahigh-performance mortar layer on the connecting surface before assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120813818.0U CN215441415U (en) | 2021-04-20 | 2021-04-20 | Quick-connect combined column pier structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120813818.0U CN215441415U (en) | 2021-04-20 | 2021-04-20 | Quick-connect combined column pier structure |
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| CN215441415U true CN215441415U (en) | 2022-01-07 |
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| CN202120813818.0U Active CN215441415U (en) | 2021-04-20 | 2021-04-20 | Quick-connect combined column pier structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382004A (en) * | 2022-01-20 | 2022-04-22 | 北京工业大学 | Self-reset double-column pier system with replaceable shearing energy consumption device |
| CN114541250A (en) * | 2022-01-18 | 2022-05-27 | 浙江宏日泰耐克新材料科技有限公司 | Ultrahigh-performance concrete combined pier and construction process thereof |
| CN114908791A (en) * | 2022-05-12 | 2022-08-16 | 山东建筑大学 | Assembled plate type foundation with splicing structure and construction process |
-
2021
- 2021-04-20 CN CN202120813818.0U patent/CN215441415U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541250A (en) * | 2022-01-18 | 2022-05-27 | 浙江宏日泰耐克新材料科技有限公司 | Ultrahigh-performance concrete combined pier and construction process thereof |
| CN114382004A (en) * | 2022-01-20 | 2022-04-22 | 北京工业大学 | Self-reset double-column pier system with replaceable shearing energy consumption device |
| CN114908791A (en) * | 2022-05-12 | 2022-08-16 | 山东建筑大学 | Assembled plate type foundation with splicing structure and construction process |
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