CN112030724B - Bidirectional socket type prefabricated assembly type pier and construction method thereof - Google Patents
Bidirectional socket type prefabricated assembly type pier and construction method thereof Download PDFInfo
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- CN112030724B CN112030724B CN202010797225.XA CN202010797225A CN112030724B CN 112030724 B CN112030724 B CN 112030724B CN 202010797225 A CN202010797225 A CN 202010797225A CN 112030724 B CN112030724 B CN 112030724B
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- prefabricated
- bearing platform
- prefabricated pier
- pier stud
- reinforcement cage
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000004570 mortar (masonry) Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011440 grout Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of bridge engineering, in particular to a bidirectional socket type prefabricated pier and a construction method thereof. Prefabricating a bearing platform, wherein a circular groove hole is formed in the center of the bearing platform; the prefabricated pier stud is arranged on the prefabricated bearing platform and is in clearance fit connection with the circular slot; one part of the ladder-shaped reinforcement cage is pre-buried in the prefabricated bearing platform, and the other part of the ladder-shaped reinforcement cage is exposed in the circular slot; the mortise is arranged in the center of the bottom of the prefabricated pier stud, and the size of the mortise is matched with that of the stepped reinforcement cage; and a temporary stabilizing support means; the prefabricated bearing platform is arranged on the top of the prefabricated bearing platform and is connected with the periphery of the prefabricated bearing platform. And after the prefabricated pier stud and the prefabricated bearing platform are assembled, the temporary stable supporting device is installed to stabilize the assembling state. The invention aims to provide a bidirectional socket type prefabricated pier and a construction method thereof aiming at the defects in the prior art, so that the connection between the prefabricated pier and a bearing platform is reliable, and the practicability is improved.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a bidirectional socket type prefabricated pier and a construction method thereof.
Background
The prefabricated pier is used as a main industrialized construction form of a substructure and has a plurality of assembly modes, but other assembly modes have higher construction precision requirements and more complex construction procedures. Compared with sleeve grouting connection and prestress connection, the socket prefabricated pier assembly does not need special construction equipment, the construction period is close to that of the sleeve grouting connection, the connection performance is reliable, the anti-seismic performance is good, and the socket prefabricated pier assembly connection and prestress connection mode has application potential.
In the prior art, the connection between the prefabricated pier and the bearing platform is poor in reliability and easy to generate large matching errors.
In view of the above problems, the designer actively makes research and innovation based on the practical experience and professional knowledge that the engineering of such products is applied for many years and by matching with the application of the theory, so as to design the bidirectional socket prefabricated pier and the construction method thereof, realize the reliable connection between the prefabricated pier and the bearing platform, and improve the practicability.
Disclosure of Invention
The invention aims to provide a bidirectional socket type prefabricated pier and a construction method thereof aiming at the defects in the prior art, so that the connection between the prefabricated pier and a bearing platform is reliable, and the practicability is improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
the method comprises the following steps:
the prefabricated bearing platform is of a square platform body structure, and a circular groove hole is formed in the center of the prefabricated bearing platform;
the prefabricated pier stud is arranged on the prefabricated bearing platform and is in clearance fit connection with the circular slot;
one part of the ladder-shaped reinforcement cage is pre-buried in the prefabricated bearing platform, and the other part of the ladder-shaped reinforcement cage is exposed in the circular slot hole and is of a tenon structure;
the mortise is arranged in the center of the bottom of the prefabricated pier stud, the size of the mortise is matched with that of the stepped reinforcement cage, and the mortise and the stepped reinforcement cage are connected in a matched mode; and
a temporary stabilizing support; the prefabricated bearing platform is arranged on the top of the prefabricated bearing platform and is connected with the periphery of the prefabricated bearing platform.
And after the prefabricated pier stud and the prefabricated bearing platform are assembled, the temporary stable supporting device is installed to stabilize the assembling state.
Furthermore, the outer wall of the height part of the prefabricated pier stud inserted into the prefabricated bearing platform is provided with a first annular shear key.
Furthermore, a second annular shear key is arranged on the inner wall of the circular slot hole; the second annular shear key and the first annular shear key are arranged correspondingly, and a gap is reserved between the second annular shear key and the first annular shear key.
Furthermore, a gap between the prefabricated pier stud and the prefabricated bearing platform is used as a grouting opening for grouting slurry.
Further, prefabricated pier stud is inside to be provided with:
the mortar discharging pipe is a PVC pipe structure, one end of the mortar discharging pipe is communicated with the mortice, and the other end of the mortar discharging pipe is communicated with the outer wall of the prefabricated pier stud.
Furthermore, the ladder-shaped reinforcement cage is formed by matching longitudinal reinforcements and spiral stirrups; and part of the longitudinal ribs are bent and anchored in the prefabricated bearing platform.
Further, the depth H of the prefabricated pier stud embedded into the prefabricated bearing platform is 1.0-1.5 times of the diameter of the prefabricated pier.
Further, a distance is reserved between the bottom of the prefabricated pier column and the bottom of the circular groove hole.
Further, the temporary steady support means includes:
the twisted steel is embedded into the prefabricated pier stud;
the I-shaped steel is welded on the twisted steel;
and the jack is arranged at the top of the prefabricated bearing platform and used for supporting the I-shaped steel.
Further, the method comprises the following steps:
the method comprises the following steps of firstly, transporting the prefabricated part to the site, and installing the prefabricated bearing platform.
And step two, aligning the mortises to the stepped steel reinforcement cage, hoisting the mortises in place, inserting the prefabricated pier stud into the circular slot hole after the verticality is adjusted, and simultaneously inserting the stepped steel reinforcement cage into the mortises as tenons.
And step three, adjusting the verticality of the prefabricated pier stud and arranging the temporary stable supporting device.
And step four, injecting the ultrahigh-performance mortar from the grouting opening until thick mortar is sprayed out from the mortar discharge pipe opening, and closing the grouting opening.
And fifthly, after natural curing for a period of time, removing the temporary stable supporting device, and finishing construction.
Through the technical scheme of the invention, the following technical effects can be realized:
through set up echelonment steel reinforcement cage on prefabricated pier, cooperate with the tongue-and-groove, realize that prefabricated pier is reliable with being connected of cushion cap, simultaneously behind the vertical degree of adjustment prefabricated pier stud, set up interim firm supporting device, guarantee construction stability, improve the practicality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of assembly of a bidirectional socket prefabricated pier in the embodiment of the invention;
FIG. 2 is a schematic structural view of a prefabricated bearing platform to be assembled in the embodiment of the invention;
FIG. 3 is a schematic diagram of the assembled bidirectional socket prefabricated pier in the embodiment of the invention;
FIG. 4 is a schematic structural view of a prefabricated pier stud to be assembled in the embodiment of the invention;
FIG. 5 is a sectional view taken along line A-A of FIG. 3;
FIG. 6 is a schematic view of a temporary stabilizing support device according to an embodiment of the present invention;
reference numerals: the prefabricated pier stud comprises a prefabricated pier stud 1, a prefabricated bearing platform 2, a mortise 3, a first annular shear key 4, a grout outlet 5, a grout filling opening 6, a circular groove 7, a second annular shear key 8, a stepped reinforcing cage 9, longitudinal ribs 10, spiral stirrups 11, a temporary stable supporting device 12, a jack 13, I-shaped steel 14 and threaded reinforcing steel 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
A bidirectional socket type prefabricated pier and a construction method thereof, as shown in figures 1 to 6,
the method comprises the following steps:
the prefabricated bearing platform 2 is of a square platform body structure, and a circular groove hole 7 is formed in the center of the prefabricated bearing platform;
the prefabricated pier stud 1 is arranged on the prefabricated bearing platform 2 and is in clearance fit connection with the circular slot hole 7;
a step-shaped reinforcement cage 9, one part of which is pre-embedded in the prefabricated bearing platform 2 and the other part of which is exposed in the circular slot 7 and is of a tenon structure;
the mortise 3 is arranged in the center of the bottom of the prefabricated pier stud 1, the size of the mortise is matched with that of the stepped reinforcement cage 9, and the mortise and the stepped reinforcement cage are connected in a matched mode; and
a temporary stabilizing support 12; the prefabricated bearing platform is arranged at the top of the prefabricated bearing platform 2 and is connected with the periphery of the prefabricated bearing platform 2.
After the prefabricated pier stud 1 and the prefabricated bearing platform 2 are assembled, the temporary stable supporting device 12 is installed to stabilize the assembling state.
Specifically, the prefabrication work of the prefabricated bearing platform 2 and the prefabricated pier stud 1 is completed firstly, the circular groove 3 is formed in the top of the prefabricated bearing platform 2, the stepped steel reinforcement cage 9 is pre-embedded in the bottom of the circular groove 3, part of the stepped steel reinforcement cage 9 is embedded into the prefabricated bearing platform 2, part of the stepped steel reinforcement cage is reserved for on-site grouting, the mortise 3 matched with the stepped steel reinforcement cage 9 is arranged in the center of the bottom of the prefabricated pier stud 1, and the connection reliability is improved.
As shown in fig. 1 to 6, preferably, the outer wall of the height part of the prefabricated pier stud 1 inserted into the prefabricated bearing platform 2 is provided with a first annular shear key 4.
As a preferable example of the above embodiment, as shown in fig. 1 to 6, a second annular shear key 8 is disposed on an inner wall of the circular slot 7; the second annular shear key 8 and the first annular shear key 4 are arranged correspondingly, and a gap is reserved between the two.
Specifically, the inner wall of the circular groove hole 3 is provided with a second annular shear key 8 which is arranged along the full height direction of the inner wall of the circular groove hole 3 and corresponds to the first annular shear key 4 arranged on the outer wall of the height part in the prefabricated bearing platform 2, and a channel for grouting is reserved in the middle.
As shown in fig. 1 to 6, a gap between the prefabricated pier stud 1 and the prefabricated pile cap 2 is preferably used as a grouting opening 6 for grouting slurry.
Specifically, a grouting opening 6 is formed in a gap between the prefabricated pier stud 1 and the prefabricated bearing platform 2, and ultrahigh-performance mortar is injected from the grouting opening 6.
As a preferable example of the above embodiment, as shown in fig. 1 to 6, the prefabricated pier stud 1 is internally provided with:
and the mortar discharging pipe 5 is a PVC pipe structure, one end of the mortar discharging pipe is communicated with the mortise 3, and the other end of the mortar discharging pipe is communicated with the outer wall of the prefabricated pier stud 1.
Specifically, the top of the mortise 3 is provided with a PVC grout outlet pipe 5, and the other end of the PVC grout outlet pipe 5 is communicated with the outer wall of the prefabricated pier stud 1.
As a preferred example of the above embodiment, as shown in fig. 1 to 6, the stepped reinforcement cage 9 is specifically formed by matching a longitudinal bar 10 and a spiral stirrup 11; the longitudinal ribs 10 are partially bent and anchored in the prefabricated bearing platform 2.
As shown in fig. 1 to 6, the prefabricated pier 1 is preferably embedded in the prefabricated platform 2 to a depth H of 1.0 to 1.5 times the diameter D of the prefabricated pier 1.
Preferably, as shown in fig. 1 to 6, a distance h is left between the bottom of the prefabricated pier stud 1 and the bottom of the circular slot 7.
Specifically, the distance h between the bottom of the prefabricated pier stud 1 and the bottom of the circular slot 7 is small, generally about 5 mm.
As shown in fig. 1 to 6, the temporary stable supporting device 12 preferably includes:
the twisted steel bar 15 is embedded into the prefabricated pier stud 1;
the I-shaped steel 14 is welded on the twisted steel bar 15;
and the jack 13 is arranged at the top of the prefabricated bearing platform 2 and used for supporting the I-shaped steel 14.
As shown in fig. 1 to 6, the method preferably includes the following steps:
firstly, transporting the prefabricated part to the site, and installing the prefabricated bearing platform 2.
And step two, aligning the mortises 3 to the stepped reinforcement cages 9, hoisting the mortises in place, inserting the prefabricated pier stud 1 into the circular slot holes 7 after the verticality is adjusted, and simultaneously inserting the stepped reinforcement cages 9 into the mortises 3 as tenons.
And step three, adjusting the vertical degree of the prefabricated pier stud 1, and arranging the temporary stable supporting device 12.
Injecting the ultrahigh-performance mortar from the grouting opening 6 until thick mortar is sprayed out from the opening of the mortar discharge pipe 5, and closing the grouting opening 6.
And step five, after natural curing for a period of time, dismantling the temporary stable supporting device 12 and finishing construction.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a prefabricated assembled pier of two-way socket joint formula which characterized in that includes:
the prefabricated bearing platform (2) is of a square platform body structure, and a circular groove hole (7) is formed in the center of the prefabricated bearing platform;
the prefabricated pier stud (1) is arranged on the prefabricated bearing platform (2) and is in clearance fit connection with the circular slot hole (7);
a step-shaped reinforcement cage (9), one part of which is pre-buried in the prefabricated bearing platform (2), and the other part of which is exposed in the circular slot hole (7) and is of a tenon structure; a gap between the prefabricated pier stud (1) and the prefabricated bearing platform (2) is used as a grouting opening (6) for grouting slurry; a distance h is reserved between the bottom of the prefabricated pier stud (1) and the bottom of the circular groove hole (7);
the mortise (3) is arranged in the center of the bottom of the prefabricated pier stud (1), the size of the mortise is matched with that of the stepped reinforcement cage (9), and the mortise and the stepped reinforcement cage are connected in a matched mode; and
temporary stable supporting means (12); the prefabricated bearing platform is arranged at the top of the prefabricated bearing platform (2) and is connected with the periphery of the prefabricated bearing platform (2);
after the prefabricated pier stud (1) and the prefabricated bearing platform (2) are assembled, the temporary stable supporting device (12) is installed to stabilize the assembling state;
prefabricated pier stud (1) inside is provided with arranges thick liquid pipe (5), for the PVC tubular construction, one end with tongue-and-groove (3) intercommunication, the other end accesss to the outer wall of prefabricated pier stud (1).
2. The bidirectional socket prefabricated pier as claimed in claim 1, wherein the outer wall of the height part of the prefabricated pier stud (1) inserted into the prefabricated cap (2) is provided with a first annular shear key (4).
3. The bidirectional socket prefabricated pier as claimed in claim 2, wherein the inner wall of the circular channel (7) is provided with a second annular shear key (8); the second annular shear key (8) and the first annular shear key (4) are arranged correspondingly, and a gap is reserved between the second annular shear key and the first annular shear key.
4. The prefabricated pier of claim 1, wherein the step-shaped reinforcement cage (9) is formed by matching longitudinal reinforcements (10) and spiral stirrups (11); and part of the longitudinal rib (10) is bent and anchored in the prefabricated bearing platform (2).
5. The bidirectional socket prefabricated pier according to claim 1, wherein the depth H of the prefabricated pier stud (1) embedded in the prefabricated cap (2) is 1.0-1.5 times the diameter (D) of the prefabricated pier stud (1).
6. The bidirectional socket prefabricated pier according to any one of claims 1 to 5, wherein the temporary stable supporting means (12) comprises:
the twisted steel (15) is embedded into the prefabricated pier stud (1);
the I-shaped steel (14) is welded on the twisted steel bar (15);
and the jack (13) is arranged at the top of the prefabricated bearing platform (2) and used for supporting the I-shaped steel (14).
7. A construction method of the bidirectional socket type prefabricated pier as claimed in claim 6, comprising the steps of:
firstly, transporting a prefabricated part to a site, and installing the prefabricated bearing platform (2);
aligning the mortises (3) to the stepped reinforcement cage (9), hoisting the mortises in place, inserting the prefabricated pier stud (1) into the circular slot hole (7) after the vertical degree is adjusted, and simultaneously inserting the stepped reinforcement cage (9) into the mortises (3) as tenons;
step three, adjusting the vertical degree of the prefabricated pier stud (1), and arranging the temporary stable supporting device (12);
injecting the ultrahigh-performance mortar from the grouting opening (6) until thick mortar is sprayed out from the opening of the mortar discharge pipe (5), and closing the grouting opening (6);
and fifthly, after natural curing for a period of time, removing the temporary stable supporting device (12) and finishing construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797225.XA CN112030724B (en) | 2020-08-10 | 2020-08-10 | Bidirectional socket type prefabricated assembly type pier and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797225.XA CN112030724B (en) | 2020-08-10 | 2020-08-10 | Bidirectional socket type prefabricated assembly type pier and construction method thereof |
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| Publication Number | Publication Date |
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| CN112030724A CN112030724A (en) | 2020-12-04 |
| CN112030724B true CN112030724B (en) | 2021-11-09 |
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| CN202010797225.XA Active CN112030724B (en) | 2020-08-10 | 2020-08-10 | Bidirectional socket type prefabricated assembly type pier and construction method thereof |
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| CN114673304A (en) * | 2022-05-07 | 2022-06-28 | 浙江大学建筑设计研究院有限公司 | Prefabricated assembly type constructional column for filling wall and construction method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468694A (en) * | 2019-09-06 | 2019-11-19 | 郑州大学 | Spigot-and-socket Self-resetting multi-segmental precast pier and its assembly method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002146720A (en) * | 2000-11-14 | 2002-05-22 | Nkk Corp | Joint construction between column and beam |
| CN205223840U (en) * | 2015-12-21 | 2016-05-11 | 上海市城市建设设计研究总院 | Bridge prefabrication pier stand and cushion cap socket joint formula connection structure |
| CN106192729B (en) * | 2016-07-14 | 2017-10-20 | 东南大学 | Precast assembly bridge pier core shape joggle head structure and construction method |
| KR20190019530A (en) * | 2017-08-18 | 2019-02-27 | 채성동 | Retaining wall method by using the precast house(PC house) of bridge building |
| CN110656575B (en) * | 2018-06-29 | 2022-07-15 | 比亚迪股份有限公司 | Bridge and bridge pier thereof |
| CN110656574B (en) * | 2018-06-29 | 2022-03-18 | 比亚迪股份有限公司 | Method for manufacturing bridge pier |
| CN110886202A (en) * | 2019-11-26 | 2020-03-17 | 北京工业大学 | Socket joint type node connection structure and construction method for prefabricated reinforced concrete hollow pier |
| CN111501526A (en) * | 2020-03-26 | 2020-08-07 | 上海市政工程设计研究总院（集团）有限公司 | Socket type connecting structure of prefabricated bridge pier column and bearing platform and construction method |
| CN111305082B (en) * | 2020-04-03 | 2021-04-06 | 中铁四局集团有限公司 | Method for mounting capping beam for mutually constraining adjacent pier columns in prefabricated bridge |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468694A (en) * | 2019-09-06 | 2019-11-19 | 郑州大学 | Spigot-and-socket Self-resetting multi-segmental precast pier and its assembly method |
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