CN219315486U - Tenon connection structure in prefabricated hollow pier and cushion cap - Google Patents
Tenon connection structure in prefabricated hollow pier and cushion cap Download PDFInfo
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- CN219315486U CN219315486U CN202223429387.1U CN202223429387U CN219315486U CN 219315486 U CN219315486 U CN 219315486U CN 202223429387 U CN202223429387 U CN 202223429387U CN 219315486 U CN219315486 U CN 219315486U
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Abstract
The utility model discloses a connecting structure of a prefabricated hollow pier and an inner tenon of a bearing platform, which comprises the bearing platform and a prefabricated hollow pier upright post; round holes are formed in the prefabricated hollow pier upright posts, and high-strength and high-toughness concrete is adopted between the outer side walls, close to the lower ends, of the lower ends and the bearing platform for local reinforcement; the bearing platform is provided with prefabricated inner tenons corresponding to the prefabricated hollow pier upright posts; the outer shape of the prefabricated inner tenon is a truncated cone shape, and the diameter of the upper end and the diameter of the lower end are smaller than the inner diameter of the round hole by 10-15 cm, so that a pouring gap is formed between the outer side wall and the round hole; and (5) uniformly pressing and grouting Dan Zimi solid concrete in each crack. Binding the bottom steel bars of the prefabricated inner tenons with the steel bars of the bearing platform during construction, and then pouring the bearing platform to fix the bearing platform with the prefabricated inner tenons; after the hollow pier upright post is prefabricated in place, concrete is poured into the gaps in a fine Dan Zimi mode to fix the hollow pier upright post. The utility model can ensure that the structure has good post-earthquake self-resetting performance and connection service performance, and can realize the rapid repair of the connection structure by re-grouting.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a connecting structure of a prefabricated hollow pier and an inner tenon of a bearing platform.
Background
The prefabricated assembly of the lower structure of the bridge is a trend of bridge construction in recent years, but the mass is larger because the components of the lower structure of the bridge are mostly solid components.
Therefore, the lightening of the lower structure of the bridge is one of the main directions of the bridge prefabrication assembly research in recent years
In the prior art, in order to achieve the purpose of energy conservation and carbon reduction, a prefabricated hollow section form is considered to be adopted for a pier column with larger body, and the connection structure of the prefabricated hollow pier and a bearing platform often becomes a weaker link, so that the overall load bearing capacity of the structure is reduced.
Therefore, how to ensure the stress performance of the connection structure between the prefabricated hollow pier and the bearing platform is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present utility model provides a connection structure of a prefabricated hollow pier and a bearing platform inner tenon, which is realized to ensure sufficient strength of the connection structure between the prefabricated hollow pier and the bearing platform.
In order to achieve the purpose, the utility model discloses a connecting structure of a prefabricated hollow pier and a bearing platform inner tenon, which comprises a bearing platform and more than one prefabricated hollow pier upright post arranged on the bearing platform.
Wherein, round holes extending along the vertical direction are arranged in each prefabricated hollow pier upright post;
the lower end of each prefabricated hollow pier upright post, the outer side wall close to the lower end and the upper surface of the bearing platform are locally reinforced by high-strength and high-toughness concrete;
the bearing platform is provided with a prefabricated inner tenon corresponding to each prefabricated hollow pier upright post on the upper surface of each prefabricated hollow pier upright post;
the outer shape of each prefabricated inner tenon is in a truncated cone shape, the diameter of the upper end is smaller than that of the lower end, and the diameter of the upper end and the diameter of the lower end are smaller than the inner diameter of the round hole by 10 cm to 15 cm, so that a pouring gap is formed between the outer side wall and the round hole;
and each crack filling is internally provided with uniform pressure and thin Dan Zimi solid concrete so as to fix the corresponding prefabricated inner tenons and the corresponding prefabricated hollow pier upright posts.
Preferably, the upper end of each prefabricated hollow pier upright post is fixed with the capping beam by adopting a grouting sleeve or a metal corrugated pipe connection mode.
Preferably, each precast inner tenon is a reinforced concrete precast member, the lower end of each precast inner tenon is reserved with a bottom reinforcing bar, and the precast inner tenons are fixedly connected with the bearing platform by binding the bottom reinforcing bars with reinforcing bars of the bearing platform together and then pouring concrete of the bearing platform.
Preferably, the fine Dan Zimi concrete filled in each pouring seam is filled through a grouting opening arranged on the corresponding prefabricated hollow pier upright post.
The utility model has the beneficial effects that:
the utility model is suitable for the connection between the light prefabricated hollow pier upright post and the bearing platform, has the characteristics of light components, no need of pre-buried connecting pieces at the connection part with the bearing platform, convenient connection construction (adjustable tolerance), good durability (connection without steel pieces), good earthquake resistance and the like, can ensure that the structure has good post-earthquake self-resetting performance and connection using performance, and can realize the rapid repair of the connection structure by re-grouting.
The conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model.
Drawings
Fig. 1 shows a schematic side view of an embodiment of the present utility model.
Fig. 2 shows a schematic top view of an embodiment of the present utility model.
Detailed Description
Examples
As shown in fig. 1 and 2, the structure for connecting the prefabricated hollow pier and the bearing platform inner tenon comprises a bearing platform 1 and more than one prefabricated hollow pier upright post 2 arranged on the bearing platform 1.
Wherein, a round hole 3 extending along the vertical direction is arranged in each prefabricated hollow pier column 2;
the lower end of each prefabricated hollow pier column 2, the outer side wall close to the lower end and the upper surface of the bearing platform 1 are locally reinforced 4 by high-strength and high-toughness concrete;
the bearing platform 1 is provided with a prefabricated inner tenon 5 corresponding to each prefabricated hollow pier upright 2 on the upper surface of each prefabricated hollow pier upright 2;
the shape of each prefabricated inner tenon 5 is in a truncated cone shape, the diameter of the upper end is smaller than that of the lower end, and the diameter of the upper end and the diameter of the lower end are smaller than the inner diameter of the round hole 3 by 10 cm to 15 cm, so that a pouring gap 6 is formed between the outer side wall and the round hole 3;
the corresponding prefabricated inner tenons 5 and the corresponding prefabricated hollow pier upright posts 2 are fixed by uniform pressure and thin Dan Zimi solid concrete in each pouring slot 6.
In practical application, the interface processing requirement, the height and the reinforcement structure of each prefabricated inner tenon 5 are all satisfied, under the combined action of axial force and bending moment, the corresponding prefabricated hollow pier upright 2 and the corresponding prefabricated inner tenon 5 are not separated, and the two are integrally and jointly subjected to load in a normal use stage through interface force;
the lower end of each prefabricated hollow pier column 2 does not need to be provided with a reserved structure or measure connected with the bearing platform 1, and the construction convenience can be further improved.
Under the action of an earthquake, the inner wall of each prefabricated hollow pier upright post 2 and the prefabricated inner tenons 5 ensure interface connection force through the height of the prefabricated inner tenons 5;
when the contact surface of each prefabricated hollow pier upright post 2 and the bearing platform 1 breaks away from and swings, the corresponding prefabricated inner tenons 5 bear all column bottom bending moments under the action of an earthquake, if yielding occurs, the corresponding prefabricated inner tenons 5 dissipate earthquake force through yielding deformation, and meanwhile the prefabricated hollow pier upright posts 2 are ensured not to be damaged basically under the action of the earthquake.
In some embodiments, the upper end of each prefabricated hollow pier column 2 is fixed with the capping beam by adopting a grouting sleeve or metal corrugated pipe connection mode.
In some embodiments, each precast inner tenon 5 is a reinforced concrete precast member, the lower ends of the precast inner tenons are reserved with bottom reinforcing bars 7, and the precast inner tenons are fixedly connected with the bearing platform 1 by binding the bottom reinforcing bars 7 with reinforcing bars of the bearing platform 1 and then carrying out concrete pouring of the bearing platform 1.
In some embodiments, the fine self-compacting concrete of each pouring slot 6 is poured through a pouring port provided in the corresponding prefabricated hollow pier stud 2.
The utility model also provides a construction method of the inner tenon connecting structure of the prefabricated hollow pier and the bearing platform, which comprises the following steps:
step 3, pouring concrete of the bearing platform 1;
and 4, hoisting each prefabricated hollow pier column 2 in place after the concrete of the bearing platform 1 is solidified to reach the design strength.
And 5, pressing and grouting fine Dan Zimi solid concrete in the corresponding pouring seams 6 through the grouting openings of the prefabricated hollow pier upright posts 2 to finish fixing.
The utility model is suitable for the rapid assembly connection of the light prefabricated hollow pier column 2, the prefabricated hollow pier column 2 is in an elastic state under the normal use stage and the earthquake action, no damage is generated basically, and good earthquake resistance is realized by the yielding deformation energy consumption of the prefabricated inner tenons 5;
the application of the utility model can ensure that the connection between the bearing platform 1 and the pier has better post-earthquake self-resetting performance and connection service performance, and even if the earthquake is damaged, the rapid restoration of the connection between the prefabricated hollow pier upright post 2 and the prefabricated inner tenon 5 can be realized by grouting again.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (4)
1. The connecting structure of the prefabricated hollow pier and the bearing platform inner tenon comprises a bearing platform (1) and more than one prefabricated hollow pier upright post (2) arranged on the bearing platform (1); the method is characterized in that:
round holes (3) extending along the vertical direction are formed in each prefabricated hollow pier column (2);
the lower end of each prefabricated hollow pier column (2), the outer side wall close to the lower end and the upper surface of the bearing platform (1) are locally reinforced (4) by high-strength and high-toughness concrete;
the bearing platform (1) is provided with a prefabricated inner tenon (5) corresponding to each prefabricated hollow pier upright (2) on the upper surface of each prefabricated hollow pier upright (2);
the outer shape of each prefabricated inner tenon (5) is in a truncated cone shape, the diameter of the upper end is smaller than that of the lower end, and the diameter of the upper end and the diameter of the lower end are smaller than the inner diameter of the round hole (3) by 10 cm to 15 cm, so that a pouring gap (6) is formed between the outer side wall and the round hole (3);
and uniform pressure and thin Dan Zimi solid concrete is filled in each pouring slot (6) to fix the corresponding prefabricated inner tenon (5) and the corresponding prefabricated hollow pier upright (2).
2. The connection structure of the prefabricated hollow pier and the bearing platform inner tenon according to claim 1, wherein the upper end of each prefabricated hollow pier upright post (2) is fixed with the capping beam by adopting a grouting sleeve or a metal corrugated pipe connection mode.
3. The precast hollow pier and cap inner tenon connection structure according to claim 1, wherein each precast inner tenon (5) is a reinforced concrete precast member, bottom reinforcing bars (7) are reserved at the lower ends, and the precast hollow pier and cap inner tenon connection structure is fixedly connected with the cap (1) by binding the bottom reinforcing bars (7) with reinforcing bars of the cap (1) together and then carrying out concrete pouring of the cap (1).
4. The precast hollow pier and cap inner tenon connection structure according to claim 1, wherein the thin Dan Zimi concrete filled in each of the filling gaps (6) is filled through a grouting opening provided in the corresponding precast hollow pier column (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223429387.1U CN219315486U (en) | 2022-12-21 | 2022-12-21 | Tenon connection structure in prefabricated hollow pier and cushion cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223429387.1U CN219315486U (en) | 2022-12-21 | 2022-12-21 | Tenon connection structure in prefabricated hollow pier and cushion cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219315486U true CN219315486U (en) | 2023-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223429387.1U Active CN219315486U (en) | 2022-12-21 | 2022-12-21 | Tenon connection structure in prefabricated hollow pier and cushion cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219315486U (en) |
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2022
- 2022-12-21 CN CN202223429387.1U patent/CN219315486U/en active Active
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