CN210013128U - Prefabricated pier beam consolidation structure of assembling - Google Patents

Prefabricated pier beam consolidation structure of assembling Download PDF

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Publication number
CN210013128U
CN210013128U CN201920527787.5U CN201920527787U CN210013128U CN 210013128 U CN210013128 U CN 210013128U CN 201920527787 U CN201920527787 U CN 201920527787U CN 210013128 U CN210013128 U CN 210013128U
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prefabricated
pier
main
bent cap
place
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CN201920527787.5U
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胡皓
周良
闫兴非
陆元春
甘露
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Shanghai Urban Construction Design Research Institute Group Co Ltd
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Shanghai Urban Construction Design Research Institute Group Co Ltd
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Abstract

The utility model discloses a prefabricated assembly pier beam consolidation structure, which comprises a main beam, prefabricated pier columns and a bent cap; the bent cap comprises an upper cast-in-place structure and a lower prefabricated structure; a plurality of welding steel bars arranged on the upper cast-in-place structure are respectively connected with the corresponding main beam longitudinal main bars of the two main beams positioned at the two sides of the bent cap; a plurality of metal corrugated pipes which are parallel to each other and are vertically arranged are arranged at the position of the lower-layer prefabricated structure corresponding to the connection position of each prefabricated pier stud; each prefabricated pier column comprises a plurality of pier column main ribs which are vertically arranged; the upper ends of the pier stud main ribs extend upwards to the upper side of the corresponding prefabricated pier stud, and the extending parts of the upper ends of the pier stud main ribs are matched with the metal corrugated pipes; when the installation is carried out, each pier stud main rib respectively penetrates through the corresponding metal corrugated pipe. The utility model discloses reduce in the same direction as the moment of flexure load at the bottom of the bridge to the pier, alleviateed the weight of prefabricated bent cap by a wide margin, make it can satisfy the requirement of local transportation, lifting capacity more easily.

Description

Prefabricated pier beam consolidation structure of assembling
Technical Field
The utility model relates to a prefabricated mound roof beam makes technical field, in particular to prefabricated mound roof beam consolidation structure of assembling.
Background
With the concept of bridge prefabrication and assembly expanded from an upper structure to a lower structure, the range of the prefabricated parts also gradually covers main bridge stressed parts such as main prefabricated and assembled pier beam fixing beams, capping beams, pier columns and the like.
In the existing prefabricated assembled bridge system, a main beam is placed on a capping beam through a support, and the capping beam is fixedly connected with a pier stud to transmit the load of an upper structure to a foundation.
The following problems exist with this architecture: under the action of the load along the bridge direction, the pier stud is equivalent to a cantilever beam with one fixed end, so that the bending resistance of the pier top is not utilized, and the bending moment of the pier bottom is larger; for a six-lane urban viaduct with a wider bridge floor, the cover beam is prefabricated integrally, so that the dead weight of the cover beam exceeds the local transportation and hoisting capacity, and transverse subsection splicing has to be adopted; the support is easy to cause various diseases, and needs to be maintained regularly and is smoother.
Therefore, a new prefabricated bridge structure system needs to be developed by those skilled in the art, and the technical advantages of the prefabricated bridge construction process are further consolidated by innovatively optimizing the stress of the structure of the system based on the consideration of the existing construction process.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model provides a pier beam concreties and constructs is assembled in prefabrication, and one of the purpose of realization reduces the moment of flexure load in the same direction as the bridge to the pier bottom, has alleviateed the weight of prefabricated bent cap by a wide margin, makes it can satisfy the requirement of local transportation, lifting capacity more easily.
In order to achieve the purpose, the utility model discloses a pier beam concreties and constructs is assembled in prefabrication, including girder and prefabricated pier stud, the girder with be equipped with the bent cap between the prefabricated pier stud.
The bent cap comprises an upper-layer cast-in-place structure and a lower-layer prefabricated structure;
the upper cast-in-place structure is provided with a plurality of welding steel bars along the length direction;
two ends of the welding steel bars are respectively connected with the corresponding main beam longitudinal main bars of the two main beams positioned at two sides of the bent cap;
a plurality of metal corrugated pipes which are parallel to each other and are vertically arranged are arranged at the position of the lower-layer prefabricated structure corresponding to the connection position of each prefabricated pier stud;
each prefabricated pier column comprises a plurality of pier column main ribs which are vertically arranged;
the upper ends of the pier stud main ribs extend upwards to correspond to the upper surfaces of the prefabricated pier studs, and the extending parts of the upper ends of the pier stud main ribs are matched with the metal corrugated pipes;
when the pier stud main reinforcement is installed, each pier stud main reinforcement respectively penetrates through the corresponding metal corrugated pipe and is filled with non-expansion high-strength cement for consolidation.
Preferably, a cast-in-place bridge deck pavement layer is arranged on the upper cast-in-place structure.
Preferably, a plurality of upper cast-in-place bent cap main ribs and upper cast-in-place bent cap prestressed pipelines which are parallel to the length direction of the prefabricated main beam, as well as lower prefabricated bent cap main ribs and lower prefabricated bent cap prestressed pipelines are respectively arranged in the upper cast-in-place structure and the lower prefabricated structure.
More preferably, the upper cast-in-place structure is provided with 2 to 3 layers of the upper cast-in-place cover beam prestressed pipelines near the upper part, and each upper cast-in-place cover beam prestressed pipeline is internally provided with prestressed tendons.
More preferably, a plurality of cover beam stirrups are arranged in the lower-layer prefabricated structure along the length direction; each bent cap stirrup is rectangular, and a plurality of bent cap stirrups and a plurality of prefabricated bent cap owner muscle of lower floor that intercross are fixed with the welding mode and are formed the steel reinforcement cage.
Preferably, a plurality of pier stud stirrups are arranged along the vertical direction of each prefabricated pier stud; and a plurality of pier column stirrups and a plurality of pier column main reinforcements which are mutually crossed are fixed in a welding mode to form a reinforcement cage.
The utility model has the advantages that:
the utility model discloses an use and to reduce the moment of flexure load at the bottom of the pier in the same direction as the bridge, alleviateed the weight of prefabricated bent cap by a wide margin, make it can satisfy the requirement of local transportation, lifting capacity more easily.
The utility model discloses on the basis of guaranteeing under-bridge headroom, the bent cap top surface flushes with the bridge floor, and the beam height increases, and cross-sectional rigidity increases, and the bending moment of horizontal bridge to pier stud top distribution reduces to some extent, pier stud bottom cross-sectional bending moment also correspondingly reduces.
The reduction of the bending moment of the section of the pier column is beneficial to reducing the section size of the pier column and the engineering quantity of the foundation; the supporting device which is easy to cause various diseases in the later stage of bridging and needs regular maintenance and replacement is removed.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 shows a schematic longitudinal sectional structure of an embodiment of the present invention.
Fig. 2 shows a schematic diagram of a transverse cross-section structure according to an embodiment of the present invention.
Fig. 3 shows a reinforcement diagram of the consolidation of the main beam, the capping beam and the pier stud according to an embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1 to 3, the prefabricated pier beam consolidation structure comprises a main beam 1 and prefabricated pier columns 5, and a capping beam is arranged between the main beam 1 and the prefabricated pier columns 5.
The bent cap comprises an upper-layer cast-in-place structure 2 and a lower-layer prefabricated structure 4;
the upper cast-in-place structure 2 is provided with a plurality of welding steel bars 13 along the length direction;
two ends of the welding steel bars 13 are respectively connected with the corresponding main beam longitudinal main bars 8 of the two main beams 1 positioned at two sides of the bent cap;
a plurality of metal corrugated pipes 6 which are parallel to each other and are vertically arranged are arranged at the positions of the lower prefabricated structure 4 corresponding to the connection positions of the prefabricated pier studs 5;
each prefabricated pier column 5 comprises a plurality of pier column main ribs 9 which are vertically arranged;
the upper ends of the pier stud main ribs 9 extend upwards to the upper side of the corresponding prefabricated pier stud 5, and the extending parts of the upper ends of the pier stud main ribs 9 are matched with the metal corrugated pipes 6;
when the installation is carried out, each pier stud main reinforcement 9 respectively penetrates through the corresponding metal corrugated pipe 6 and is filled with non-expansion high-strength cement for consolidation.
The utility model discloses a principle lies in, it is two-layer with the vertical branch of bent cap, and the lower floor is prefabricated lower floor prefabricated construction 4, upper strata and is cast-in-place upper strata cast-in-place structure 2.
The connection between the main beam 1 and the capping beam and between the prefabricated pier stud 5 is realized by adopting the following mode: a plurality of pier stud main ribs 9 of the prefabricated pier stud 5 extend out of the top surface and extend to the vicinity of the bridge floor, a metal corrugated pipe 6 is embedded in the position of the lower prefabricated structure 4 corresponding to the pier stud main ribs 9 so as to allow the pier stud main ribs 9 to pass through, the prefabricated pier stud 5, the lower prefabricated structure 4, the main girders 1 at two sides and the upper cast-in-place structure 2 are cast and consolidated together in situ, and a prefabricated assembled bridge structure system with the main girders, the cover girders and the pier studs consolidated is formed; the bending moment load along the bridge to the pier bottom is reduced, the weight of the prefabricated bent cap is greatly reduced, and the requirements of local transportation and lifting capacity can be easily met.
In some embodiments, the upper cast-in-place structure 2 is surmounted by a cast-in-place deck layer 7.
In some embodiments, a plurality of upper cast-in-place bent cap main ribs 14 and upper cast-in-place bent cap prestressed pipelines 15, lower prefabricated bent cap main ribs 12 and lower prefabricated bent cap prestressed pipelines 11, which are parallel to the length direction of the prefabricated main beam 1, are respectively arranged in the upper cast-in-place structure 2 and the lower prefabricated structure 4.
In some embodiments, 2 to 3 layers of upper cast-in-place cover beam prestressed pipes 15 are arranged at the position, close to the upper side, of the upper cast-in-place structure 2, and each upper cast-in-place cover beam prestressed pipe 15 is internally provided with prestressed tendons.
In some embodiments, a plurality of cover beam stirrups 16 are arranged in the lower prefabricated structure 4 along the length direction; each bent cap stirrup 16 is rectangular, and a plurality of bent cap stirrups 16 and a plurality of lower-layer prefabricated bent cap main reinforcements 12 which are mutually crossed are fixed in a welding mode to form a reinforcement cage.
In some embodiments, a plurality of pier stud stirrups 10 are arranged along the vertical direction of each prefabricated pier stud 5; the pier stud stirrups 10 and the pier stud main reinforcements 9 which are mutually crossed are fixed in a welding mode to form a reinforcement cage.
The utility model also provides a construction method of prefabricated pier roof beam consolidation structure of assembling, the step is as follows:
A. hoisting each prefabricated pier stud 5 in place, and then hoisting the lower-layer prefabricated structure 4;
B. when the lower-layer prefabricated structure 4 is hoisted in place, the extending part of the upper end of each pier stud main rib 9 respectively penetrates through the corresponding metal corrugated pipe 6 pre-embedded in the lower-layer prefabricated structure 4, and the extending part of the upper end of each pier stud main rib 9 extends to the position near the bridge floor;
C. tensioning the prestressed tendons arranged in the prestressed pipeline 11 of the lower-layer prefabricated cover beam, hoisting the two main beams 1 at the two sides of the cover beam, and erecting the two main beams 1 on the temporary support 3 above the lower-layer prefabricated structure 4;
D. a plurality of longitudinal main beam ribs 8 of the two main beams 1 are connected by a plurality of welding steel bars 13;
E. constructing an upper cast-in-place structure 2;
F. tensioning the prestressed tendons in the upper cast-in-place cover beam prestressed pipeline 15 near the top surface of the upper cast-in-place structure 2 to form a girder-cover beam-pier column consolidated prefabricated assembled bridge structure system;
G. and (7) casting a bridge deck pavement layer 7 in situ.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (6)

1. The prefabricated assembly pier beam consolidation structure comprises a main beam (1) and prefabricated pier columns (5), wherein cover beams are arranged between the main beam (1) and the prefabricated pier columns (5); the method is characterized in that: the bent cap comprises an upper-layer cast-in-place structure (2) and a lower-layer prefabricated structure (4);
the upper cast-in-place structure (2) is provided with a plurality of welding steel bars (13) along the length direction;
two ends of the welding steel bars (13) are respectively connected with the corresponding main beam longitudinal main bars (8) of the two main beams (1) positioned at two sides of the bent cap;
a plurality of metal corrugated pipes (6) which are parallel to each other and are vertically arranged are arranged at the positions, corresponding to the connection positions of the lower prefabricated structure (4) and each prefabricated pier stud (5);
each prefabricated pier column (5) comprises a plurality of pier column main ribs (9) which are vertically arranged;
the upper ends of the pier stud main ribs (9) extend upwards to the upper side of the corresponding prefabricated pier stud (5), and the extending parts of the upper ends of the pier stud main ribs (9) are matched with the metal corrugated pipes (6);
when the pier stud main reinforcement (9) is installed, each pier stud main reinforcement respectively penetrates through the corresponding metal corrugated pipe (6) and is filled with non-expansion high-strength cement for consolidation.
2. The precast assembled pier beam consolidation structure according to the claim 1, wherein the cast-in-place bridge pavement layer (7) is arranged on the upper cast-in-place structure (2).
3. The precast assembled pier beam consolidation structure according to claim 1, wherein a plurality of upper cast-in-place bent cap main ribs (14) and upper cast-in-place bent cap prestressed pipelines (15) parallel to the length direction of the main beam (1), as well as lower precast bent cap main ribs (12) and lower precast bent cap prestressed pipelines (11) are respectively arranged in the upper cast-in-place structure (2) and the lower precast structure (4).
4. The precast assembled pier beam consolidation structure according to claim 3, wherein 2 to 3 layers of the upper cast-in-place cover beam prestressed pipes (15) are arranged at the position of the upper cast-in-place structure (2) close to the upper side, and prestressed tendons are arranged in each upper cast-in-place cover beam prestressed pipe (15).
5. The precast assembled pier beam consolidation structure according to claim 3, wherein a plurality of cover beam stirrups (16) are arranged in the lower precast structure (4) along the length direction; each bent cap stirrup (16) is rectangular, and a plurality of bent cap stirrups (16) and a plurality of prefabricated bent cap main reinforcements (12) of the lower layer which are mutually crossed are fixed in a welding mode to form a reinforcement cage.
6. The prefabricated pier beam consolidation structure is characterized in that a plurality of pier column stirrups (10) are arranged along the vertical direction of each prefabricated pier column (5); and a plurality of pier stud stirrups (10) and a plurality of pier stud main reinforcements (9) which are mutually crossed are fixed in a welding mode to form a reinforcement cage.
CN201920527787.5U 2019-04-18 2019-04-18 Prefabricated pier beam consolidation structure of assembling Active CN210013128U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920527787.5U CN210013128U (en) 2019-04-18 2019-04-18 Prefabricated pier beam consolidation structure of assembling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920527787.5U CN210013128U (en) 2019-04-18 2019-04-18 Prefabricated pier beam consolidation structure of assembling

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CN210013128U true CN210013128U (en) 2020-02-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113638304A (en) * 2021-07-13 2021-11-12 宁波市政工程建设集团股份有限公司 Concrete beam type bridge hidden cover beam structure system and construction method thereof
CN113652966A (en) * 2021-07-13 2021-11-16 宁波市政工程建设集团股份有限公司 Construction method of full-prefabricated assembly type concrete beam type bridge structure system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113638304A (en) * 2021-07-13 2021-11-12 宁波市政工程建设集团股份有限公司 Concrete beam type bridge hidden cover beam structure system and construction method thereof
CN113652966A (en) * 2021-07-13 2021-11-16 宁波市政工程建设集团股份有限公司 Construction method of full-prefabricated assembly type concrete beam type bridge structure system
CN113638304B (en) * 2021-07-13 2022-10-25 宁波市政工程建设集团股份有限公司 Concrete beam type bridge hidden cover beam structure system and construction method thereof
CN113652966B (en) * 2021-07-13 2022-11-25 宁波市政工程建设集团股份有限公司 Construction method of full-prefabricated assembly type concrete beam type bridge structure system

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