CN211848867U - Tooth groove type prefabricated bridge pier and bearing platform connecting structure - Google Patents
Tooth groove type prefabricated bridge pier and bearing platform connecting structure Download PDFInfo
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- CN211848867U CN211848867U CN202020466153.6U CN202020466153U CN211848867U CN 211848867 U CN211848867 U CN 211848867U CN 202020466153 U CN202020466153 U CN 202020466153U CN 211848867 U CN211848867 U CN 211848867U
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Abstract
The utility model discloses a tooth groove type prefabricated pier and bearing platform connecting structure, which comprises a plurality of lower shear teeth and a groove, wherein the lower shear teeth are arranged along the side surfaces of pier stud bottoms and extend outwards, the groove is arranged on the bearing platform and is used for inserting pier studs, the periphery of the top of the groove extends inwards to form a plurality of upper shear teeth, the inner sides of the upper shear teeth form pier stud inserting channels, the gaps between adjacent upper shear teeth form lower shear tooth inserting channels, and the lower parts of the upper shear teeth form lower shear tooth accommodating cavities; the contact surface of the pier column bottom and the groove is provided with a matching pair; when the lower shear teeth rotate to the positions below the upper shear teeth, the first hollow pipes in the upper shear teeth, the second hollow pipes in the lower shear teeth and the third hollow pipes in the pier bearing platform, which correspond to the positions of the first hollow pipes, form connecting rod inserting channels which are communicated up and down. The utility model discloses simple structure, atress are clear and definite, safe and reliable, process are simple and convenient, construction cycle is short.
Description
Technical Field
The utility model belongs to the technical field of prefabricated pier and cushion cap assembly technique and specifically relates to a prefabricated pier of tooth's socket formula and cushion cap connection structure is related to.
Background
With the development of social economy, the bridge substructure constructed by the traditional cast-in-place reinforced concrete process cannot meet the requirements of rapidity, standardization, greenness, environmental protection and the like of construction. Based on this, the construction of prefabricated piers and caps in an assembled manner has been rapidly developed. At present, the following technical routes are mainly adopted in the assembly type construction: 1) the precast pier is embedded into the groove of the bearing platform and then cast with concrete to form a whole, the cast-in-place concrete is large in quantity in the construction process, the maintenance time is long, the construction period is long, the rapid construction is not facilitated, and the shear groove structure can only generate vertical shear resistance and is insufficient in horizontal shear resistance; 2) the prefabricated bridge pier and the bearing platform are bolted to form a whole through the limiting rod nails and the steel plates, the key technical point is that adaptive limiting holes are reserved in the prefabricated bridge pier and the prefabricated bearing platform, and the prefabricated bridge pier and the prefabricated bearing platform are integrated through the combination of the limiting holes and the limiting nails, the number of the reserved holes, the number of the embedded steel plates, the limiting rods and the number of the nails are large, the process is complex, and the embedded steel plates connected through bolts need to be maintained regularly in the later period; 3) the prefabricated bridge pier and the prefabricated bearing platform part are integrally prefabricated and then integrally cast in situ with the bearing platform, and the key technical point is that the prefabricated bridge pier and the prefabricated bearing platform part are integrally prefabricated and then integrally cast in situ with the bearing platform, but the prefabricated bridge pier and the prefabricated bearing platform have larger size difference, more embedded reinforcement cages and complex prefabricating process, the construction precision requirement in the later integral process of the cast-in-situ of the foundation pile is higher, the construction period is long, and the standardization degree is low; 4) the prefabricated bridge pier and the prefabricated bearing platform are connected by adopting a socket joint type structure of a grouting sleeve, the key technical point is that a steel bar and the grouting sleeve are respectively embedded in the prefabricated bridge pier and the prefabricated bearing platform, and a tenon, a mortise and a corresponding steel pipe are arranged.
Disclosure of Invention
In order to solve the problem, the utility model provides a prefabricated pier of flute formula and cushion cap connection structure specifically can take following technical scheme:
prefabricated pier of tooth's socket formula and cushion cap connection structure, include pier stud and pier cushion cap through assembled structural connection, assembled structure includes
The pier column inserting part comprises a plurality of lower shear teeth which extend outwards along the side surface of the bottom of the pier column;
the bearing platform socket part comprises a groove for inserting a pier stud, a plurality of upper shear teeth are arranged on the periphery of the top of the groove in an inward extending mode, the inner sides of the upper shear teeth form pier stud inserting channels, gaps between adjacent upper shear teeth form lower shear tooth inserting channels, and the lower parts of the upper shear teeth form lower shear tooth accommodating cavities;
the positioning part comprises a matching pair arranged on the bottom of the pier stud and the contact surface of the groove;
the connecting piece assembling part comprises a first hollow pipe arranged in the upper shear tooth, a second hollow pipe arranged in the lower shear tooth and third hollow pipes which are arranged in the pier cushion cap and correspond to the positions of the first hollow pipes respectively; when the lower shear teeth rotate to the positions below the upper shear teeth, the first hollow pipe, the second hollow pipe and the third hollow pipe form a connecting rod inserting channel which is communicated up and down.
The upper shear teeth and the lower shear teeth are the same in number, the lower shear teeth are uniformly distributed on the periphery of the pier stud to form an outer gear structure, the upper shear teeth are uniformly distributed on the periphery of the groove to form an inner gear structure meshed with the outer gear, and when the lower shear teeth rotate to the position below the upper shear teeth, the side edges of the upper shear teeth and the lower shear teeth are overlapped.
The height of the lower shear tooth accommodating cavity is matched with the thickness of the lower shear tooth.
The matching pair is a tenon arranged at the center of the groove and a reserved mortise arranged at the center of the bottom surface of the pier stud.
The first hollow pipe, the second hollow pipe and the third hollow pipe are pre-embedded metal corrugated pipes with the same diameter.
The connecting rod is a steel bar matched with the inner diameter of the embedded metal corrugated pipe, and the length of the connecting rod is equal to the sum of the lengths of the first hollow pipe, the second hollow pipe and the third hollow pipe.
The assembly type structure further comprises a high-strength non-shrinkage cement grouting material layer positioned between the connecting rod and the first hollow pipe, the second hollow pipe and the third hollow pipe.
The fabricated structure further comprises C50 concrete pouring layers located in gaps between contact surfaces of the pier columns, the grooves, the upper shear teeth and the lower shear teeth.
The pier stud is a hollow section structure or a solid section structure.
The pier bearing platform is of a prefabricated reinforced concrete structure or a cast-in-place reinforced concrete structure.
The utility model discloses when assembling pier stud and pier cushion cap, at first aim at pier stud cartridge passageway and lower shear force tooth cartridge passageway on the pier cushion cap respectively with pier stud and lower shear force tooth, after the cartridge targets in place downwards, the rotatory pier stud of low-angle makes second hollow tube on the shear force tooth and first hollow tube on the pier cushion cap, third hollow tube correspond from top to bottom and form the through passage down, and the installation is accomplished to the cartridge connecting rod again, pours the concrete at each contact surface clearance at last and solidifies.
The utility model provides a prefabricated pier of flute formula and cushion cap connection structure, simple structure, atress are clear and definite, safe and reliable, process are simple and convenient, construction cycle is short. Compared with the prior art, the method has the following advantages:
1. shearing force teeth which are mutually matched are creatively arranged on the prefabricated reinforced concrete pier stud and the bearing platform, after the prefabricated reinforced concrete pier stud is inserted into the bearing platform, the bottom tenon and the mortise are butted, and the pier stud is rotated at a small angle to enable the matched shearing force teeth to be effectively meshed, so that the matched shearing force teeth are large in size and can provide great shearing resistance bearing capacity for the pier in the vertical direction;
2. the prefabricated reinforced concrete pier stud and the bearing platform shear tooth as well as the bottom of the groove of the bearing platform are all pre-embedded with metal corrugated pipes, after the prefabricated pier stud is installed and adjusted in place, reinforcing steel bars are installed in the metal corrugated pipes, penetrate through the pier stud shear tooth, the bearing platform shear tooth and the bearing platform, and then high-strength non-shrinkage cement grouting material is poured into the metal corrugated pipes, so that the large horizontal shear resistance is generated;
3. after the assembly is completed, C50 concrete is poured in the contact surface of the pier column and the bearing platform and the meshing gap of the shear teeth, so that the pier column and the bearing platform are connected into a whole, the cast-in-place concrete of the structure is small in quantity, steel bars and pipe fittings with small embedded sizes are not needed, a structure with small sizes is not needed, a section steel connection structure is not needed, and the process is simple and direct.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view a-a of the pier cap of fig. 1.
Fig. 3 is a B-B sectional view of the abutment of fig. 1.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1-3, prefabricated pier and cushion cap connection structure of tooth's socket type, include pier stud M and pier cushion cap N through the assembled structural connection, the assembled structure includes pier stud cartridge portion, cushion cap socket joint portion, location portion, connecting piece assembly portion to and the no shrink cement grout bed of excelling in and C50 concrete placement layer, pier stud M is hollow section structure or solid section structure, pier cushion cap N is prefabricated reinforced concrete structure or cast-in-place reinforced concrete structure.
Specifically, the pier column inserting part comprises a plurality of lower shear teeth 1 which extend outwards along the side surface of the bottom of the pier column M, and the lower shear teeth 1 are uniformly distributed on the periphery of the pier column M to form an external gear structure (see fig. 3); the socket part of the bearing platform comprises a groove 2 for inserting a pier stud M, the periphery of the top of the groove 2 extends inwards to form a plurality of upper shear teeth 3, the number of the upper shear teeth 3 is the same as that of the lower shear teeth 1, the appearance of the upper shear teeth 3 is consistent, and the upper shear teeth 3 are uniformly distributed on the periphery of the groove 2 to form an inner gear structure (shown in figure 2) meshed with the outer gear; the inner sides of the upper shear teeth 3 form pier column insertion channels matched with pier columns M, gaps between adjacent upper shear teeth 3 form lower shear tooth insertion channels matched with the lower shear teeth 1, and the lower parts of the upper shear teeth 3 form lower shear tooth accommodating cavities with the heights matched with the thicknesses of the lower shear teeth 1; when the lower shear tooth 1 rotates to a position right below the upper shear tooth 3, the side edges of the upper shear tooth 2 and the lower shear tooth 1 are completely overlapped. Location portion, including setting up the cooperation on pier stud M bottom and recess 2 contact surface right, under the general condition, the cooperation is to tenon 4 and the reservation tongue-and-groove 5 of setting at pier stud M bottom surface center for setting up at recess 2 center. The connecting piece assembling part consists of a plurality of embedded metal corrugated pipes with equal diameters, and comprises a first hollow pipe 6 arranged in each upper shear tooth 3, a second hollow pipe 7 arranged in each lower shear tooth 1, and third hollow pipes 8 which are arranged in the pier bearing platform N and correspond to the first hollow pipes 6 respectively; when the lower shear teeth 1 rotate to the positions right below the upper shear teeth 3, each group of the first hollow pipe 6, the second hollow pipe 7 and the third hollow pipe 8 form a connecting rod insertion channel which is communicated up and down and used for inserting a connecting rod (see fig. 1). The connecting rod adopts a steel bar matched with the inner diameter of the embedded metal corrugated pipe, and the length of the connecting rod is equal to the sum of the lengths of the first hollow pipe 6, the second hollow pipe 7 and the third hollow pipe 8.
When assembling the pier stud M and the pier bearing platform N, firstly aligning the pier stud M and the lower shear teeth 1 to a pier stud insertion channel and a lower shear teeth insertion channel on the pier bearing platform N respectively, and inserting downwards to ensure that the reserved mortises 5 on the bottom surface of the pier stud M are matched with the tenons 4 in the centers of the grooves 2; then, rotating the pier stud M to enable the second hollow tube on the lower shear tooth 1 to vertically correspond to the first hollow tube 6 and the third hollow tube 8 on the pier bearing platform 7 to form a through connecting rod inserting channel, and inserting the connecting rod to finish installation; after the connecting rod is inserted, high-strength shrinkage-free cement is poured into gaps among the connecting rod, the first hollow tube 6, the second hollow tube 7 and the third hollow tube 8 to form a high-strength shrinkage-free cement grouting material layer, C50 concrete is poured into gaps among contact surfaces of the pier stud M, the groove 2, the upper shear teeth 3 and the lower shear teeth 1 to form a C50 concrete pouring layer, and the connection between the pier stud M and the pier bearing platform N is further solidified.
The connection between the prefabricated pier and the bearing platform does not need to adopt prestressed tendons for connection, and the prestressed tensioning grouting process does not exist; the wet reinforced concrete segment is not required to be arranged, and the concrete curing time of the wet joint segment is not required to be considered in the construction period; the connecting grouting sleeves with small section size and large number are not required to be pre-embedded, so that the construction precision requirement can be reduced, and the construction process is simplified; the prefabricated pier shear teeth and the bearing platform shear teeth can provide large shearing bearing capacity in the vertical direction, and the rear reinforcing steel bars can provide limiting and shearing bearing capacity in the horizontal direction. The utility model discloses the shear force tooth that adopts is big with pre-buried bellows size, the prefabricated processing of being convenient for, and connection structure is simple, firm, and the atress is clear and definite, and the construction is convenient, has characteristics such as rapid, standardized, the durability is good.
Claims (10)
1. The utility model provides a prefabricated pier of tooth's socket formula and cushion cap connection structure, includes pier stud and pier cushion cap through assembled structural connection, its characterized in that: the fabricated structure comprises
The pier column inserting part comprises a plurality of lower shear teeth which extend outwards along the side surface of the bottom of the pier column;
the bearing platform socket part comprises a groove for inserting a pier stud, a plurality of upper shear teeth are arranged on the periphery of the top of the groove in an inward extending mode, the inner sides of the upper shear teeth form pier stud inserting channels, gaps between adjacent upper shear teeth form lower shear tooth inserting channels, and the lower parts of the upper shear teeth form lower shear tooth accommodating cavities;
the positioning part comprises a matching pair arranged on the bottom of the pier stud and the contact surface of the groove;
the connecting piece assembling part comprises a first hollow pipe arranged in the upper shear tooth, a second hollow pipe arranged in the lower shear tooth and third hollow pipes which are arranged in the pier cushion cap and correspond to the positions of the first hollow pipes respectively; when the lower shear teeth rotate to the positions below the upper shear teeth, the first hollow pipe, the second hollow pipe and the third hollow pipe form a connecting rod inserting channel which is communicated up and down.
2. The tooth-grooved prefabricated bridge pier and bearing platform connecting structure according to claim 1, characterized in that: the upper shear teeth and the lower shear teeth are the same in number, the lower shear teeth are uniformly distributed on the periphery of the pier stud to form an outer gear structure, the upper shear teeth are uniformly distributed on the periphery of the groove to form an inner gear structure meshed with the outer gear, and when the lower shear teeth rotate to the position below the upper shear teeth, the side edges of the upper shear teeth and the lower shear teeth are overlapped.
3. The tooth-grooved prefabricated bridge pier and bearing platform connecting structure according to claim 1, characterized in that: the height of the lower shear tooth accommodating cavity is matched with the thickness of the lower shear tooth.
4. The tooth-grooved prefabricated bridge pier and bearing platform connecting structure according to claim 1, characterized in that: the matching pair is a tenon arranged at the center of the groove and a reserved mortise arranged at the center of the bottom surface of the pier stud.
5. The tooth-grooved prefabricated bridge pier and bearing platform connecting structure according to claim 1, characterized in that: the first hollow pipe, the second hollow pipe and the third hollow pipe are pre-embedded metal corrugated pipes with the same diameter.
6. The prefabricated pier and cushion cap connection structure of flute profile of claim 5, characterized in that: the connecting rod is a steel bar matched with the inner diameter of the embedded metal corrugated pipe, and the length of the connecting rod is equal to the sum of the lengths of the first hollow pipe, the second hollow pipe and the third hollow pipe.
7. The tooth-grooved prefabricated bridge pier and bearing platform connecting structure according to claim 1, characterized in that: the assembly type structure further comprises a high-strength non-shrinkage cement grouting material layer positioned between the connecting rod and the first hollow pipe, the second hollow pipe and the third hollow pipe.
8. The tooth-grooved prefabricated bridge pier and bearing platform connecting structure according to claim 1, characterized in that: the fabricated structure further comprises C50 concrete pouring layers located in gaps between contact surfaces of the pier columns, the grooves, the upper shear teeth and the lower shear teeth.
9. The tooth-grooved prefabricated bridge pier and bearing platform connecting structure according to claim 1, characterized in that: the pier stud is a hollow section structure or a solid section structure.
10. The tooth-grooved prefabricated bridge pier and bearing platform connecting structure according to claim 1, characterized in that: the pier bearing platform is of a prefabricated reinforced concrete structure or a cast-in-place reinforced concrete structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466153.6U CN211848867U (en) | 2020-04-02 | 2020-04-02 | Tooth groove type prefabricated bridge pier and bearing platform connecting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466153.6U CN211848867U (en) | 2020-04-02 | 2020-04-02 | Tooth groove type prefabricated bridge pier and bearing platform connecting structure |
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| CN211848867U true CN211848867U (en) | 2020-11-03 |
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| CN202020466153.6U Active CN211848867U (en) | 2020-04-02 | 2020-04-02 | Tooth groove type prefabricated bridge pier and bearing platform connecting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176886A (en) * | 2020-11-16 | 2021-01-05 | 山东高速建设管理集团有限公司 | Double-steel sleeve socket connection structure of prefabricated bridge pier and construction method thereof |
| CN113089500A (en) * | 2021-05-18 | 2021-07-09 | 中国建筑股份有限公司 | Socket type connecting structure based on T-shaped groove and construction method thereof |
-
2020
- 2020-04-02 CN CN202020466153.6U patent/CN211848867U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176886A (en) * | 2020-11-16 | 2021-01-05 | 山东高速建设管理集团有限公司 | Double-steel sleeve socket connection structure of prefabricated bridge pier and construction method thereof |
| CN112176886B (en) * | 2020-11-16 | 2022-03-22 | 山东高速建设管理集团有限公司 | Double-steel sleeve socket connection structure of prefabricated bridge pier and construction method thereof |
| CN113089500A (en) * | 2021-05-18 | 2021-07-09 | 中国建筑股份有限公司 | Socket type connecting structure based on T-shaped groove and construction method thereof |
| CN113089500B (en) * | 2021-05-18 | 2022-05-24 | 中国建筑股份有限公司 | Socket type connecting structure based on T-shaped groove and construction method thereof |
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