CN210420850U - Prefabricated high-strength concrete combined pier structure - Google Patents
Prefabricated high-strength concrete combined pier structure Download PDFInfo
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- CN210420850U CN210420850U CN201920878917.XU CN201920878917U CN210420850U CN 210420850 U CN210420850 U CN 210420850U CN 201920878917 U CN201920878917 U CN 201920878917U CN 210420850 U CN210420850 U CN 210420850U
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Abstract
The utility model discloses a prefabricated high-strength concrete combination formula pier structure. This pier structure includes concrete pile, concrete foundation and pier, and the concrete pile sets up in concrete foundation's below, and the pier includes at least one pier unit, and the pier unit includes interior mound, outer mound, interior mound banket and outer mound banket, and interior mound leads to long hollow structure for whole, and outer mound leads to long hollow structure or pin-connected panel hollow structure for whole, and concrete foundation upper portion is provided with at least one boss, is provided with between interior mound and the outer mound and separates the clitellum. The combined pier structure of the utility model has the advantages of convenient production, hoisting and transportation, simple and convenient construction process, and the on-site assembly mode can shorten the construction period and reduce the on-site manpower and construction cost; the utility model discloses a combination formula pier structure can separately pour, and the concrete intensity level when separately pouring can be different, can reduce construction cost under the condition of guaranteeing pier installation quality.
Description
Technical Field
The utility model relates to a building bridge technical field relates to an improvement of pier shape and structure in the bridge field. In particular to a prefabricated high-strength concrete combined pier structure.
Background
In most of elevated piers in highways and municipal roads, cast-in-place formwork is adopted and then concrete is poured. The cast-in-place concrete pier is greatly influenced by the field environment, and the construction period of the overhead pier in the urban area cannot be guaranteed due to the fact that the on-site formwork support and formwork removal are needed, and the surrounding environment is influenced to a certain extent. When the pier is a hollow section, a double-mold structure is adopted, the mold is complex to install and long in construction period, the concrete pier construction process has the problems of complex manufacturing of a reinforcement cage, low compressive strength of pile body concrete and the like, excessive concrete, steel and other materials are consumed during pouring manufacturing, national resources are wasted, and the quality cannot be guaranteed.
The pier of part engineering is changed into the mill by cast-in-place and is prefabricated, but in the preparation technology of prefabricated pier, the ubiquitous mechanization degree is not high, especially on the preparation of steel reinforcement cage, still more rely on artifical ligature to go on, this not only influences work efficiency, still can lead to the steel reinforcement cage to have the fastness poor because of the reason of human factor, and the main muscle slides easily, in the prefabricated pier forming process, takes place main muscle dislocation easily, appears the serious quality problems such as main muscle exposes even. When the diameter of the pier is larger or the pier is thicker, the mass of a single pier is too heavy, and the influence on the manufacturing, transporting and hoisting efficiency is larger.
SUMMERY OF THE UTILITY MODEL
For overcoming above problem, the utility model provides a topological form is excellent, mechanical properties is good, concrete strength grade is high, production simple process is convenient, hoist and mount transportation is convenient, site operation is convenient, economic efficient precast concrete combination pier structure to solve the problem that cast in situ's concrete pier and precast pier exist.
In order to solve the technical problem, the utility model discloses a following mode realizes:
the utility model provides a prefabricated high-strength concrete combined pier structure, which comprises a concrete pile, a concrete base and a pier, the concrete pile is arranged below the concrete base, the pier comprises at least one pier unit, the pier unit comprises an inner pier, an outer pier, an inner pier toe guard and an outer pier toe guard, the inner pier is of an integral through long hollow structure, the outer pier is of an integral through-length hollow structure or an assembled hollow structure, the ratio of the outer diameter of the outer pier to the outer diameter of the inner pier is 1.2-4.2, the ratio of the thickness of the inner pier to the thickness of the outer pier is 1.5-4.5, the upper part of the concrete base is provided with at least one boss which is positioned inside the inner pier, the inner pier toe guard is arranged between the inner pier and the outer pier, the outer pier toe guard is arranged outside the outer pier, and a partition ring belt is arranged above the inner pier toe guard between the inner pier and the outer pier.
Furthermore, the upper part of the outer side of the inner pier is provided with an inner tackifying key which is made of convex steel or convex-concave concrete threads; and/or the inner side of the outer pier is provided with an outer tackifying key which is convex steel or convex-concave concrete threads.
Furthermore, the outer side of the inner pier comprises an outer side lower part connected with the inner pier foot guard and an outer side upper part not connected with the inner pier foot guard, an outer-coated steel pipe is arranged on the outer side lower part of the inner pier, reinforcing ribs are arranged on the outer side of the outer-coated steel pipe, a steel reinforcement cage is arranged at the position of the inner pier foot guard, the reinforcing ribs are of an outer convex steel structure and are arranged along the circumferential direction of the outer-coated steel pipe, and the reinforcing ribs are fixedly connected with the steel reinforcement cage after extending into the steel reinforcement cage in a staggered mode; the outside of outer mound includes the outside lower part that links to each other with outer mound banket to and the outside upper portion that does not link to each other with outer mound banket, the outside lower part of outer mound is provided with the outsourcing steel pipe, the outside of outsourcing steel pipe is provided with the strengthening rib, outer mound banket department is equipped with the steel reinforcement cage, the strengthening rib is evagination steel structure, arranges along the circumference of outsourcing steel pipe, the strengthening rib is crisscross after stretching into the steel reinforcement cage, with steel reinforcement cage fixed connection.
Furthermore, the steel reinforcement cage includes steel reinforcement cage, stirrup, the steel reinforcement cage includes outer steel reinforcement cage and inlayer steel reinforcement cage, the owner muscle setting of outer steel reinforcement cage is in the inboard of stirrup, the main muscle setting of inlayer steel reinforcement cage is in the outside of stirrup.
Further, the pier comprises a plurality of pier units, namely the pier comprises an inner pier, a first middle pier, a second middle pier and a third middle pier … … outer pier, an inner pier protection foot is arranged on the lower side between the adjacent piers, and a partition ring belt is arranged on the upper side between the adjacent piers.
Furthermore, the partition belt is poured with a cementing material, or is poured with a discrete material, or is reserved with a hollow, or is poured with a cementing material only in a local height range.
Furthermore, the boss and the foot protector of the pier are arranged to protrude from the base, or a groove is arranged on the base, and the boss and the foot protector of the pier are arranged in the groove.
Furthermore, the inner pier and the outer pier are internally provided with through-length steel bars, the length of the steel bars is larger than or equal to the length of the pier body, and when the length of the steel bars is larger than the length of the pier body, the upper ends of the steel bars penetrate out of the upper part of the pier.
Furthermore, when the outer pier is of an assembled hollow structure, the outer pier is formed by assembling at least two half circular arcs, and a connecting device is arranged between every two adjacent circular arcs.
The utility model has the advantages that:
the combined pier structure of the utility model has the advantages of convenient production, hoisting and transportation, simple and convenient construction process, and the on-site assembly mode can shorten the construction period and reduce the on-site manpower and construction cost; the utility model discloses a combination formula pier structure can separately pour, and the concrete intensity level when separately pouring can be different, can reduce construction cost under the condition of guaranteeing pier installation quality.
Drawings
Fig. 1 is a schematic structural view of a prefabricated high-strength concrete combined pier in the first embodiment;
fig. 2 is a schematic structural view of a prefabricated high-strength concrete composite pier according to the second embodiment;
fig. 3 is a longitudinal sectional view of a main body portion of a pier;
fig. 4 is a transverse sectional view of a main body portion of a pier;
FIG. 5 is a schematic structural view of an outer wall of an inner pier provided with an outer wrapping steel bar;
fig. 6 is a schematic structural view of an outer pier outer wall provided with an outer wrapping steel bar.
The labels in the figure are: 1. a capping beam; 2. reinforcing steel bars; 3. externally upsetting; 4. inner piers; 5. a partition ring belt; 6. protecting feet by using an inner pier; 7. a boss; 8. The outer end protects the foot; 9. a base; 10. concrete piles; 11. an external tackifying bond; 12. an internal tackifying bond; 13. a groove; 14. steel bars are coated outside; 15. and (5) reinforcing ribs.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example one
The embodiment provides a prefabricated high-strength concrete combined pier structure as shown in fig. 1, which comprises a concrete pile 10, a concrete base 9 and a pier, wherein the concrete pile 10 is arranged below the concrete base 9. The pier includes at least one pier unit, and this pier unit includes interior mound 3, outer mound 4, interior mound banket 6 and outer mound banket 8, as shown in fig. 3 and 4, interior mound 3 leads to long hollow structure for circular whole, and outer mound 4 leads to long hollow structure or pin-connected panel hollow structure for circular whole, and the ratio of the outer diameter of outer mound 4 and interior mound 3 is 1.2 ~ 2.5, and the ratio of the thickness of interior mound 3 and outer mound 4 is 1.5 ~ 4.5, concrete base 9 upper portion is provided with at least one boss 7, and boss 7 is located interior mound 3 inside, interior mound banket 6 set up between interior mound 3 and outer mound 4, and outer mound banket 8 sets up in outer mound 4 outsidely, and the top of interior mound banket 6 between interior mound 3 and the outer mound 4 is provided with and separates clitellum 5. The inner pier and the outer pier are arranged on the boss of the base and then form a prefabricated high-strength concrete combined pier structure with the spacer ring belt between the inner pier and the outer pier. It should be noted that the cross-sectional shapes of the inner pier and the outer pier in the present invention are not limited to the circular shapes illustrated in the present embodiment, but may be various shapes such as an outer polygon and an inner circle (including a square shape), and the present embodiment is described by taking a circular shape as an example.
The combined pier structure of the embodiment is convenient to produce, hoist and transport and simple and convenient in construction process, the construction period can be shortened by the on-site assembling mode, and the on-site manpower and construction cost can be reduced; the separately poured concrete of the embodiment has different strength grades, and the construction cost can be reduced under the condition of ensuring the mounting quality of the bridge pier.
In the embodiment, the upper part of the outer side of the inner pier 3 is provided with an inner tackifying key 12, and the inner tackifying key 12 is made of convex steel or convex-concave concrete threads; and/or the inner side of the outer pier 4 is provided with an outer tackifying key 11, and the outer tackifying key 11 is convex steel or convex-concave concrete threads. By arranging the tackifying keys with special structures, the concrete between the inner piers 3 and the isolating ring belts 5 and between the outer piers 4 and the isolating ring belts 5 are bonded more firmly and tightly.
In this embodiment, as shown in fig. 5, the outside of interior mound 3 includes the outside lower part that links to each other with interior mound banket 6 to and the outside upper portion that does not link to each other with interior mound banket 6, and the outside lower part of interior mound 3 is provided with outsourcing steel pipe 14, and the outside of outsourcing steel pipe 14 is provided with strengthening rib 15, interior mound banket 6 department is equipped with the steel reinforcement cage, strengthening rib 15 is outer protruding steel construction, arranges along the circumference of outsourcing steel pipe 14, strengthening rib 15 staggers after stretching into the steel reinforcement cage, with steel reinforcement cage fixed connection. In this embodiment, the length of the outer-coated steel pipe is not less than 100 cm. As shown in fig. 6. The structure ensures that the concrete at the position of the inner pier and the spacer ring belt is bonded more firmly and tightly. The outside of outer mound 4 includes the outside lower part that links to each other with outer mound banket 8 to and the outside upper portion that does not link to each other with outer mound banket 8, the outside lower part of outer mound 4 is provided with outsourcing steel pipe 14, the outside of outsourcing steel pipe 14 is provided with strengthening rib 15, outer mound banket 8 department is equipped with the steel reinforcement cage, strengthening rib 15 is evagination steel structure, arranges along 14 circumference of outsourcing steel pipe, behind the crisscross steel reinforcement cage that stretches into of strengthening rib 15, with steel reinforcement cage fixed connection.
In this embodiment, the steel reinforcement cage includes steel reinforcement cage, stirrup, the steel reinforcement cage includes outer steel reinforcement cage and inlayer steel reinforcement cage, the owner muscle setting of outer steel reinforcement cage is in the inboard of stirrup, the main muscle setting of inlayer steel reinforcement cage is in the outside of stirrup. The main reinforcement setting of outer steel reinforcement framework cage is in the inboard of stirrup, and the main reinforcement setting of inlayer steel reinforcement framework cage is in the outside of stirrup, more accords with the atress of pier at the reality, ensures the stability of pier structure. The steel reinforcement framework cage in this embodiment can exceed pier shaft length, can exceed the length of interior mound 3, outer mound 4 pier body self promptly, provides the steel bar anchor for the connection of later stage and superstructure.
In this embodiment, the pier can include a plurality of pier units, promptly the pier includes interior mound 3, first well mound, second well mound, pier … … outer mound 4 in the third, and the downside between the adjacent mound sets up interior mound banket 6, and the upside between the adjacent mound is provided with separates clitellum 5. The present embodiment will be described by taking as an example only the case where one pier element is included as shown in fig. 1.
In this embodiment, the partition belt 5 may be cast with a cement material, or cast with a discrete material, or may be provided with a hollow space, or cast with a cement material only in a local height range.
In this embodiment, the steel bars 2 are arranged inside the inner pier 3 and the outer pier 4, the length of the steel bars 2 is greater than or equal to the length of the pier body, the embodiment is described only by the case that the length of the steel bars 2 is greater than the length of the pier body as illustrated in fig. 1, and the upper ends of the steel bars 2 penetrate out of the upper part of the pier.
In this embodiment, when the outer pier 4 is an assembled hollow structure, a structure formed by assembling at least two half arcs can be adopted, and a connecting device is arranged between adjacent arcs.
In this embodiment, grouting sleeves may be provided on the top of both the inner pier 3 and the outer pier 4; the inner pier foot protector is round, the outer diameter of the inner pier foot protector is smaller than the inner diameter of the outer pier, and the outer pier foot protector is round or polygonal; the boss is a reinforced concrete solid cylinder or a reinforced concrete hollow cylinder; the concrete pile is a precast pile, a steel pipe concrete pile or a cast-in-place pile.
The construction method of the prefabricated high-strength concrete combined pier structure comprises the following steps:
(1) and (3) concrete pile construction: adopting construction equipment to carry out concrete pile construction;
(2) base construction: connecting the prefabricated base with the boss or the groove with the boss with the concrete pile; or a boss or a concave platform is manufactured after the base poured in situ is connected with the concrete;
(3) and (3) inner pier construction: manufacturing a reinforcement cage on the outer side of the boss, installing an inner pier on the outer side of the boss on the base, pouring concrete to form an inner pier angle bead, wherein the concrete strength grade of the inner pier angle bead is not lower than C50, and when the tackifying key of the inner pier is in a non-threaded shape, installing the tackifying key on the outer side of the inner pier and then inserting the inner pier into the inner boss on the base; the inner pier is manufactured by adopting a prestress tensioning process and a centrifugal forming process in a factory, the strength grade of the pier body concrete is greater than C60, and the steel bar tensioning force of the inner pier is 0.65-0.75 time of the standard value of the tensile strength of the steel bar
(4) And (3) outer pier construction: when the outer pier is an integral hollow pier, the outer pier is directly arranged on the inner pier guard foot on the base, and when the outer pier is in an assembled type, the inner pier guard feet of each assembly ring are abutted against each other and then are assembled into the integral outer pier. The outer pier is manufactured in a factory by adopting a prestress tensioning process and a centrifugal forming process, the strength grade of pier body concrete is greater than C70, and the tension of a steel bar is 0.2-0.35 times of the standard value of the tensile strength of the steel bar;
(5) constructing outer pier foot guards: and performing foot protection construction on the bottom of the outer pier, wherein the strength grade of the outer pier concrete is not lower than C50.
(6) Constructing the spacer ring belt: and after the outer pier foot guard is installed, pouring concrete into the spacer ring belt between the inner pier and the outer pier, wherein the strength grade of the concrete is not lower than C50.
(7) And (5) mounting the top capping beam, and finishing the construction of the combined pier structure.
Preferably, in the construction method of the high-strength concrete combined pier structure, the partition ring belt and the inner pier toe guards can be simultaneously cast with integrated concrete, and the concrete strength is not lower than C60.
When the base is prefabricated, the steps (1) and (2) of the construction method of the high-strength concrete combined pier structure can be synchronously carried out;
example two
The present embodiment provides a prefabricated high-strength concrete composite pier structure as shown in fig. 2. The prefabricated high-strength concrete combined pier structure is basically the same as that of the pier structure in the first embodiment, and the same parts are not repeated herein. The main difference between the present embodiment and the first embodiment is that the boss 7 and the foot guard portion of the pier in the first embodiment are disposed to protrude from the base 9, whereas the pier in the present embodiment is provided with the groove 13 on the base 9, and the boss 7 and the foot guard portion are disposed in the groove 13.
The prefabricated high-strength concrete combined pier structure of this embodiment makes the pier go deep into inside the base, is favorable to reducing the whole shared space in vertical of combined pier structure, makes the pier structure more firm simultaneously.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.
Claims (9)
1. Prefabricated high-strength concrete combination formula pier structure, including concrete pile (10), concrete foundation (9) and pier, concrete pile (10) set up in the below of concrete foundation (9), its characterized in that: the pier comprises at least one pier unit, the pier unit comprises an inner pier (3), an outer pier (4), an inner pier guard foot (6) and an outer pier guard foot (8), the inner pier (3) is of an integral through-length hollow structure, the outer pier (4) is of an integral through-length hollow structure or an assembled hollow structure, the ratio of the outer diameter of the outer pier (4) to the outer diameter of the inner pier (3) is 1.2 to 4.2, the ratio of the thickness of the inner pier (3) to the thickness of the outer pier (4) is 1.5 to 4.5, at least one boss (7) is arranged on the upper part of the concrete base (9), the lug boss (7) is positioned inside the inner pier (3), the inner pier foot protector (6) is arranged between the inner pier (3) and the outer pier (4), the outer pier toe guard (8) is arranged outside the outer pier (4), and the isolation ring belt (5) is arranged above the inner pier toe guard (6) between the inner pier (3) and the outer pier (4).
2. The precast high-strength concrete combined pier structure according to claim 1, wherein: an inner tackifying key (12) is arranged at the upper part of the outer side of the inner pier (3), and the inner tackifying key (12) is made of convex steel or convex-concave concrete threads; and/or the inner side of the outer pier (4) is provided with an outer tackifying key (11), and the outer tackifying key (11) is convex steel or convex-concave concrete threads.
3. The precast high-strength concrete combined pier structure according to claim 1, wherein: the outer side of the inner pier (3) comprises an outer side lower part connected with the inner pier foot protector (6) and an outer side upper part not connected with the inner pier foot protector (6), an outer-coated steel pipe (14) is arranged on the outer side lower part of the inner pier (3), reinforcing ribs (15) are arranged on the outer side of the outer-coated steel pipe (14), a reinforcement cage is arranged at the inner pier foot protector (6), the reinforcing ribs (15) are of an outer-convex steel structure and are arranged along the circumferential direction of the outer-coated steel pipe (14), and the reinforcing ribs (15) are fixedly connected with the reinforcement cage after being extended into the reinforcement cage in a staggered mode; the outside of outer mound (4) includes the outside lower part that links to each other with outer mound banket (8) to and the outside upper portion that does not link to each other with outer mound banket (8), the outside lower part of outer mound (4) is provided with outsourcing steel pipe (14), the outside of outsourcing steel pipe (14) is provided with strengthening rib (15), outer mound banket (8) department is equipped with the steel reinforcement cage, strengthening rib (15) are evagination steel structure, arrange along the circumference of outsourcing steel pipe (14), strengthening rib (15) are crisscross stretch into behind the steel reinforcement cage, with steel reinforcement cage fixed connection.
4. The precast high-strength concrete combined pier structure according to claim 3, wherein: the steel reinforcement cage includes steel reinforcement cage, stirrup, the steel reinforcement cage includes outer steel reinforcement cage and inlayer steel reinforcement cage, the main muscle setting of outer steel reinforcement cage is in the inboard of stirrup, the main muscle setting of inlayer steel reinforcement cage is in the outside of stirrup.
5. The precast high-strength concrete combined pier structure according to claim 1, wherein: the pier includes a plurality of pier units, promptly the pier includes interior mound (3), pier in the first, pier in the second, pier … … outer mound (4) in the third, and the downside between the adjacent mound sets up interior mound banket (6), and the upside between the adjacent mound is provided with separates clitellum (5).
6. The precast high-strength concrete composite pier structure according to claim 1 or 5, wherein: the partition ring belt (5) is poured with a cementing material, or is poured with a discrete material, or is a reserved hollow, or is only poured with the cementing material in a local height range.
7. The precast high-strength concrete combined pier structure according to claim 1, wherein: the boss (7) and the foot protection part of the bridge pier are arranged to protrude out of the base (9), or a groove (13) is formed in the base (9), and the boss (7) and the foot protection part of the bridge pier are arranged in the groove (13).
8. The precast high-strength concrete combined pier structure according to claim 1, wherein: interior mound (3) and outer mound (4) inside all set up through long reinforcing bar (2), reinforcing bar (2) length is more than or equal to pier shaft length, and when reinforcing bar (2) length was greater than pier shaft length, its upper end was worn out from pier upper portion.
9. The precast high-strength concrete combined pier structure according to claim 1, wherein: when the outer pier (4) is of an assembled hollow structure, the outer pier is formed by assembling at least two half circular arcs, and a connecting device is arranged between every two adjacent circular arcs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920878917.XU CN210420850U (en) | 2019-06-12 | 2019-06-12 | Prefabricated high-strength concrete combined pier structure |
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| CN201920878917.XU CN210420850U (en) | 2019-06-12 | 2019-06-12 | Prefabricated high-strength concrete combined pier structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205919A (en) * | 2019-06-12 | 2019-09-06 | 建华建材（中国）有限公司 | Prefabricated high-strength concrete modular bridge pier structure and its construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205919A (en) * | 2019-06-12 | 2019-09-06 | 建华建材（中国）有限公司 | Prefabricated high-strength concrete modular bridge pier structure and its construction method |
| CN110205919B (en) * | 2019-06-12 | 2024-06-07 | 建华建材（中国）有限公司 | Prefabricated high-strength concrete combined pier structure and construction method thereof |
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