CN113026726A - Large-diameter PHC (prestressed high-strength concrete) tubular pile of double-layer reinforcement cage and preparation method thereof - Google Patents
Large-diameter PHC (prestressed high-strength concrete) tubular pile of double-layer reinforcement cage and preparation method thereof Download PDFInfo
- Publication number
- CN113026726A CN113026726A CN202110286318.0A CN202110286318A CN113026726A CN 113026726 A CN113026726 A CN 113026726A CN 202110286318 A CN202110286318 A CN 202110286318A CN 113026726 A CN113026726 A CN 113026726A
- Authority
- CN
- China
- Prior art keywords
- steel bars
- prestressed
- common
- double
- reinforcement cage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A large-diameter PHC tubular pile of a double-layer reinforcement cage and a preparation method thereof relate to the technical field of PHC tubular piles. The PHC tubular pile is optimized by combining and configuring common steel bars and prestressed steel bars, a plurality of common steel bars are arranged in the high-strength concrete pile body and close to the outer side wall, a plurality of prestressed steel bars are arranged in the high-strength concrete pile body and close to the inner side wall, steel bars which are enclosed into a triangle are welded on the prestressed steel bars at corresponding positions, and the angular points of the steel bars of the triangle are bound and connected with the common steel bars at corresponding positions. Through the mode, on one hand, the bending resistance and shearing resistance maximum capacity of the pile body is improved, and on the other hand, the pile body has certain energy consumption capacity, namely certain ductility, so that under the action of horizontal cyclic load, the pile body can be deformed enough to consume more energy, and brittle failure is avoided. The invention has the characteristics of convenient manufacture, economy, reliability and strong practicability, and realizes the improvement of the anti-seismic performance of the high-strength prestressed pipe pile.
Description
Technical Field
The invention belongs to the technical field of PHC (prestressed high-strength concrete) tubular piles, and particularly relates to a large-diameter PHC tubular pile of a double-layer reinforcement cage and a preparation method thereof.
Background
The PHC pipe pile has high compression bearing capacity, good pile forming quality and lower unit price, thereby being widely applied to the foundation construction of hydraulic buildings. However, the PHC tubular pile is low in reinforcement ratio and poor in ductility, is generally limited to be used in regions with high seismic fortification intensity, and is affected to be popularized in many southeast Asia seismic zone regions, so that the research on the optimization mode of the PHC tubular pile is needed to improve the ductility and the horizontal bending resistance, enhance the engineering adaptability and promote the application of the PHC tubular pile in overseas.
Experiments show that the prestressed steel bars in the PHC pipe pile are often subjected to brittle failure. At the moment, a mode of combining common steel bars and prestressed steel bars is proved to be feasible through experiments, so that aiming at the problems, a large-diameter PHC tubular pile of a double-layer steel reinforcement cage and a preparation method thereof are provided.
Disclosure of Invention
The first purpose of the present invention is to provide a large-diameter PHC tubular pile of a double-layer reinforcement cage, which can improve the maximum bending and shearing resistance of a pile body, and make the pile body have a certain energy consumption capability, i.e. a certain ductility, so that under the action of horizontal cyclic load, the pile body can deform enough to consume more energy, thereby avoiding brittle failure.
The second purpose of the invention is to provide a preparation method of the large-diameter PHC tubular pile of the double-layer reinforcement cage, which systematically explains the specific steps of preparing the large-diameter PHC tubular pile of the double-layer reinforcement cage and is better applied to practical engineering.
The diameter of the outer side wall of the large-diameter PHC tubular pile is larger than 800 mm.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a large-diameter PHC tubular pile of a double-layer reinforcement cage, which comprises a high-strength concrete pile body with a hollow cavity, a plurality of common reinforcements, a plurality of prestressed reinforcements and a plurality of stirrups; the large-diameter PHC tubular pile of the double-layer reinforcement cage also comprises a plurality of steel bars;
the high-strength concrete pile is characterized in that a plurality of common steel bars are distributed in the high-strength concrete pile body close to the longitudinal ring of the outer side wall, a plurality of prestressed steel bars are distributed in the high-strength concrete pile body close to the longitudinal ring of the inner side wall, a plurality of stirrups are bound and connected to the inner sides of the common steel bars and the outer sides of the prestressed steel bars, the stirrups bound to the inner sides of the common steel bars are arranged along the longitudinal distance of the common steel bars, the stirrups bound to the outer sides of the prestressed steel bars are arranged along the longitudinal distance of the prestressed steel bars, each steel bar is enclosed into a triangle and welded to the outer sides of the prestressed steel bars at corresponding positions, two triangular steel bars are welded to the same cross section of the prestressed steel bars, the two triangular steel bars are staggered at an angle of 60 degrees and are stacked to form a group, and a plurality of, and the angular point of each triangular steel bar is bound and connected with the common steel bar at the corresponding position.
The invention discloses a preparation method of a large-diameter PHC tubular pile of a double-layer reinforcement cage, which comprises the following steps of:
(1) preparing a pedestal, and brushing a plurality of common steel bars and a plurality of prestressed steel bars with a separant;
(2) uniformly arranging a plurality of prestressed reinforcements in a longitudinal annular mode at a preset radius;
(3) tensioning a plurality of prestressed reinforcements by using the pedestal;
(4) the outer sides of the plurality of prestressed reinforcements are provided with stirrups, and the stirrups are bound and connected with the plurality of prestressed reinforcements;
(5) welding steel bars which are enclosed into a triangle at the outer side of the prestressed steel bars at corresponding positions, welding two triangular steel bars at the same section, wherein the two triangular steel bars are staggered at an angle of 60 degrees and are stacked to form a group, and welding a plurality of groups of triangular steel bars along the longitudinal distance of the prestressed steel bars;
(6) uniformly arranging a plurality of common steel bars at a preset radius in a longitudinal annular mode, and arranging a plurality of prestressed steel bars in a space surrounded by the common steel bars;
(7) the inner sides of the common steel bars are provided with stirrups which are bound and connected with the common steel bars;
(8) the angular point of each triangular steel bar is bound and connected with the common steel bar at the corresponding position;
(9) respectively erecting a formwork at the inner sides of a plurality of prestressed reinforcements and at the outer sides of a plurality of common reinforcements;
(10) pouring concrete between the two moulds to prepare a large-diameter PHC pipe pile blank of the double-layer reinforcement cage;
(11) placing the manufactured large-diameter PHC pipe pile blank of the double-layer reinforcement cage into a standard curing chamber for curing, disassembling the pedestal after the curing is finished, and releasing the prestressed reinforcement;
(12) and (4) demolding to prepare the large-diameter PHC tubular pile of the double-layer reinforcement cage.
Compared with the prior art, the invention has the beneficial effects that:
1. in the aspect of ultimate bending resistance, due to the increase of non-prestressed tendons (namely common steel bars), the failure effect is born by more concrete areas when the prestressed tendons are in a yield-failure stage, the yield degree of the prestressed tendons is reduced, and the ultimate bearing capacity is improved. Meanwhile, the prestressed reinforcement is arranged near the inner side wall of the high-strength concrete pile body, so that the prestressed reinforcement is less in strain when the PHC tubular pile is bent under the action of horizontal vibration.
2. In the aspect of anti-cracking capacity, the steel bars which are enclosed into a triangle are welded on the prestressed steel bars, so that the cross section of the PHC pipe pile is subjected to uniform pre-stress. And a plurality of groups of triangular steel bars are arranged at certain intervals along the longitudinal direction of the high-strength concrete pile body so as to provide stable pre-stress at the whole length of the PHC tubular pile. The pre-stress slows down the development of cracks, and makes up the problem that once local cracks are expanded, the resistance at the section is rapidly reduced, so that the bending resistance at the fracture is weak.
3. In the aspect of energy consumption, as the non-prestressed tendons (common steel bars) are additionally arranged in the high-strength concrete pile body near the outer side surface and the steel bars which form a triangle in a surrounding mode are subjected to reciprocating deformation under the action of an earthquake, the energy consumption efficiency is remarkably improved, and the high-strength concrete pile has good energy consumption performance and impact resistance, is convenient to obtain materials, and is economical and applicable.
The beneficial effects are mutually guaranteed, so that the comprehensive effect is more obvious.
Drawings
Fig. 1 is a cross-sectional view of a large-diameter PHC pile of a double-layer reinforcement cage according to the present invention.
The names and reference numbers of the components referred to in the figures are as follows:
1-common steel bar; 2-hooping; 3-prestressed reinforcement; a 4-triangular steel bar; 5-an inner side wall; 6-outer side wall; 7-high-strength concrete pile body.
Detailed Description
The first embodiment is as follows: as shown in fig. 1, the present embodiment discloses a large-diameter PHC tubular pile of a double-layer reinforcement cage, which includes a high-strength concrete pile body 7 with a hollow cavity, a plurality of ordinary reinforcements 1, a plurality of prestressed reinforcements 3, and a plurality of stirrups 2; the large-diameter PHC tubular pile of the double-layer reinforcement cage also comprises a plurality of steel bars;
a plurality of common steel bars 1 are longitudinally and annularly distributed in the high-strength concrete pile body 7 close to the outer side wall 6, a plurality of prestressed steel bars 3 are longitudinally and annularly distributed in the high-strength concrete pile body 7 close to the inner side wall 5, a plurality of stirrups 2 are bound and connected in the positions of the inner sides of the common steel bars 1 and the outer sides of the prestressed steel bars 3, the stirrups 2 bound in the positions of the inner sides of the common steel bars 1 are arranged along the longitudinal distance of the common steel bars 1, the stirrups 2 bound in the outer sides of the prestressed steel bars 3 are arranged along the longitudinal distance of the prestressed steel bars 3, each steel bar is enclosed into a triangle (the length of the steel bar is required to be enclosed into a closed triangle), and is welded in the outer sides of the prestressed steel bars 3 at corresponding positions, two triangular steel bars 4 are welded in the same cross section of the plurality of prestressed steel bars 3, the two triangular steel bars 4 are staggered, a plurality of groups of triangular steel bars 4 are welded on the prestressed steel bars 3 along the longitudinal distance, and the angular point of each triangular steel bar 4 is bound and connected with the common steel bar 1 at the corresponding position.
The second embodiment is as follows: as shown in fig. 1, the present embodiment is a further description of the first embodiment, and the steel bar has a thickness of 5 to 8mm in a cross section of the high-strength concrete pile body 7.
The third concrete implementation mode: as shown in fig. 1, this embodiment is further explained for the first embodiment, and the steel bars have a width of 8-12mm in the cross section of the vertical high-strength concrete pile body 7.
The fourth concrete implementation mode: as shown in fig. 1, the present embodiment discloses a method for preparing a large-diameter PHC tubular pile of a double-layer steel reinforcement cage according to any one of the first to third embodiments, the method comprising the following steps:
(1) preparing a pedestal, and brushing a plurality of common steel bars 1 and a plurality of prestressed steel bars 3 with a separant;
(2) a plurality of prestressed reinforcements 3 are uniformly distributed in a longitudinal annular mode at a preset radius;
(3) tensioning a plurality of prestressed reinforcements 3 by using the pedestal;
(4) the stirrups 2 are arranged on the outer sides of the plurality of prestressed reinforcements 3, and the stirrups 2 are bound and connected with the plurality of prestressed reinforcements 3;
(5) welding the steel bars 4 which enclose a triangle at the outer side of the prestressed steel bars 3 at corresponding positions, welding two triangular steel bars 4 at the same section, wherein the two triangular steel bars 4 are staggered at an angle of 60 degrees and are stacked to form a group, and welding a plurality of groups of triangular steel bars 4 along the longitudinal distance of the prestressed steel bars 3;
(6) uniformly arranging a plurality of common steel bars 1 in a longitudinal annular mode at a preset radius, and arranging a plurality of prestressed steel bars 3 in a space surrounded by the common steel bars 1;
(7) the stirrups 2 are arranged on the inner sides of the common steel bars 1, and the stirrups 2 are bound and connected with the common steel bars 1;
(8) the angular point of each triangular steel bar 4 is bound and connected with the common steel bar 1 at the corresponding position;
(9) respectively erecting a formwork at the inner sides of the plurality of prestressed reinforcements 3 and at the outer sides of the plurality of common reinforcements 1;
(10) pouring concrete between the two moulds to prepare a large-diameter PHC pipe pile blank of the double-layer reinforcement cage;
(11) putting the manufactured large-diameter PHC pipe pile blank of the double-layer reinforcement cage into a standard curing chamber for curing, disassembling the pedestal after the curing is finished, and releasing the prestressed reinforcement 3;
(12) and (4) demolding to prepare the large-diameter PHC tubular pile of the double-layer reinforcement cage.
Example 1:
the model of the prototype tubular pile (namely the PHC tubular pile manufactured by the invention) can adopt PHC800B110-12, the concrete strength is C80, the length of the tubular pile is 12m, the diameter of the outer side wall is 800mm, the wall thickness is 110mm, the effective pre-compressive stress of the concrete is 9.01MPa, the prestressed reinforcement 3 adopts a spiral rib steel bar with the standard tensile strength of 1420MPa, the common reinforcement 1 adopts HRB400 steel bar, the stirrup 2 is 6mm cold-drawn low-carbon indented steel wire, the design value of the tensile strength is 500MPa, the spacing of the stirrups 2 (being spiral stirrups, namely, the stirrups 2 are made into a connecting ring shape) in the range of 1.5m at two ends of the tubular pile is 45mm, and the spacing of the stirrups 2 at the other sections is 80 mm.
As shown in fig. 1, a large-diameter PHC tubular pile of a double-layer reinforcement cage adopts a mode of combining and configuring a common reinforcement 1 and a prestressed reinforcement 3; 24 common steel bars 1 are circumferentially and uniformly arranged in a high-strength concrete pile body 7 with a cavity close to an outer side wall 6, stirrups 2 (spiral stirrups) are arranged on the inner sides of the common steel bars 1, 6 prestressed steel bars 3 are circumferentially and uniformly arranged in the high-strength concrete pile body 7 close to an inner side wall 5, stirrups 2 are arranged on the outer sides of the prestressed steel bars 3, steel bars 4 which are enclosed into a triangle are welded on the prestressed steel bars 3 at corresponding positions, the angular points of the steel bars 4 are bound and connected with the common steel bars 1 at corresponding positions, two steel bars 4 which are enclosed into a triangle are arranged at the same cross section, and the two steel bars 4 which are enclosed into a triangle are staggered and stacked at an angle of 60 degrees to form a group; the triangular steel bars 4 are arranged in groups every 2.3m along the longitudinal direction of the high-strength concrete pile body 7, 6 groups are arranged to provide stable pre-stress, the distance between the triangular steel bars 4 adjacent to two ends of the high-strength concrete pile body 7 and the end part of the high-strength concrete pile body 7 is 250mm, and the lengths of the steel bars are required to be enclosed into a closed triangle; the steel bars have the thickness of 6mm in the cross section of the high-strength concrete pile body 7 so as to avoid generating larger local pre-compressive stress on the cross section of the PHC pipe pile; the steel bars have a width of 10mm in the cross section of the vertical high-strength concrete pile body 7 to resist bending deformation of the PHC pile under the action of a horizontal earthquake.
A preparation method of a large-diameter PHC tubular pile of a double-layer reinforcement cage comprises the following steps:
(1) preparing a pedestal, and brushing a plurality of common steel bars 1 and a plurality of prestressed steel bars 3 with a separant;
(2) uniformly arranging prestressed reinforcements 3 in the circumferential direction at the radius of 330 mm;
(3) tensioning the prestressed reinforcement 3 by using the pedestal;
(4) the outer side of the prestressed reinforcement 3 is provided with a stirrup 2, and the stirrup 2 is bound and connected with the prestressed reinforcement 3;
(5) welding steel bars 4 which enclose a triangle on the prestressed steel bars 3 at corresponding positions, welding two triangular steel bars 4 at the same section to form a group, and welding 5 groups of triangular steel bars 4 at intervals of 2.3m along the longitudinal direction of the prestressed steel bars 3;
(6) uniformly arranging 6 common steel bars 1 in a circumferential direction at a radius of 360 mm;
(7) the stirrups 2 are arranged on the inner sides of the 6 common steel bars 1, and the stirrups 2 are bound and connected with the common steel bars 1;
(8) the angular points of the steel bars 4 which enclose the triangle are bound and connected with the common steel bars 1 at the corresponding positions, and the two triangular steel bars 4 at the same section are staggered and stacked at an angle of 60 degrees;
(9) respectively erecting a formwork at the inner sides of the plurality of prestressed reinforcements 3 and at the outer sides of the plurality of common reinforcements 1;
(10) pouring high-strength concrete between the two moulds to prepare a large-diameter PHC pipe pile blank of the double-layer reinforcement cage;
(11) putting the manufactured large-diameter PHC pipe pile blank of the double-layer reinforcement cage into a standard curing chamber for curing (in the prior art), disassembling a lower base after curing is finished, and releasing the prestressed reinforcement 3;
(12) and (4) demolding, manufacturing the large-diameter PHC tubular pile of the double-layer reinforcement cage, and placing the PHC tubular pile into a storage yard to be delivered.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent methods or equivalent procedures that can be directly or indirectly applied to other related technical fields using the contents of the present specification and the accompanying drawings are included in the scope of the present invention.
Claims (4)
1. A large-diameter PHC tubular pile of a double-layer reinforcement cage comprises a high-strength concrete pile body (7) with a hollow cavity, a plurality of common reinforcements (1), a plurality of prestressed reinforcements (3) and a plurality of stirrups (2); the method is characterized in that: the large-diameter PHC tubular pile of the double-layer reinforcement cage also comprises a plurality of steel bars;
the high-strength concrete pile is characterized in that a plurality of common steel bars (1) are distributed in the high-strength concrete pile body (7) close to the longitudinal ring of the outer side wall (6), a plurality of prestressed steel bars (3) are distributed in the high-strength concrete pile body (7) close to the longitudinal ring of the inner side wall (5), a plurality of stirrups (2) are bound and connected to the inner sides of the common steel bars (1) and the outer sides of the prestressed steel bars (3), the stirrups (2) bound to the inner sides of the common steel bars (1) are arranged along the longitudinal distance of the common steel bars (1), the stirrups (2) bound to the outer sides of the prestressed steel bars (3) are arranged along the longitudinal distance of the prestressed steel bars (3), each steel bar is enclosed into a triangle and welded to the outer sides of the prestressed steel bars (3) at corresponding positions, two triangular steel bars (4) are welded at the same cross section of the plurality of the, the steel bars (4) of the two triangles are staggered at 60 degrees and stacked to form a group, a plurality of groups of triangular steel bars (4) are welded on the plurality of prestressed steel bars (3) along the longitudinal distance, and the angular point of each triangular steel bar (4) is bound and connected with the common steel bar (1) at the corresponding position.
2. The large-diameter PHC tubular pile of the double-layer reinforcement cage of claim 1, which is characterized in that: the steel bars have the thickness of 5-8 mm in the cross section of the high-strength concrete pile body (7).
3. The large-diameter PHC tubular pile of the double-layer reinforcement cage of claim 1, which is characterized in that: the steel bars have a width of 8-12mm in the cross section of the vertical high-strength concrete pile body (7).
4. A method for preparing a large-diameter PHC pile of a double-layer reinforcement cage as claimed in any one of claims 1 to 3, which is characterized in that: the method comprises the following steps:
(1) preparing a pedestal, and brushing a plurality of common steel bars (1) and a plurality of prestressed steel bars (3) with a separant;
(2) a plurality of prestressed reinforcements (3) are uniformly distributed in a longitudinal annular mode at a preset radius;
(3) tensioning a plurality of prestressed reinforcements (3) by using the pedestal;
(4) the stirrups (2) are arranged on the outer sides of the plurality of prestressed reinforcements (3), and the stirrups (2) are bound and connected with the plurality of prestressed reinforcements (3);
(5) welding steel bars (4) which are enclosed into a triangle at the outer side of the prestressed steel bars (3) at corresponding positions, welding two triangular steel bars (4) at the same section, wherein the two triangular steel bars (4) are staggered at an angle of 60 degrees and are stacked to form a group, and welding a plurality of groups of triangular steel bars (4) along the longitudinal distance of the prestressed steel bars (3);
(6) a plurality of common steel bars (1) are uniformly distributed in a longitudinal annular mode at a preset radius, and a plurality of prestressed steel bars (3) are arranged in a space surrounded by the common steel bars (1);
(7) the stirrups (2) are arranged on the inner sides of the common steel bars (1), and the stirrups (2) are bound and connected with the common steel bars (1);
(8) the angular point of each triangular steel bar (4) is bound and connected with the common steel bar (1) at the corresponding position;
(9) supporting a formwork at the inner sides of the plurality of prestressed reinforcements (3) and at the outer sides of the plurality of common reinforcements (1) respectively;
(10) pouring concrete between the two moulds to prepare a large-diameter PHC pipe pile blank of the double-layer reinforcement cage;
(11) putting the manufactured large-diameter PHC pipe pile blank of the double-layer reinforcement cage into a standard curing chamber for curing, disassembling the pedestal after the curing is finished, and releasing the prestressed reinforcement (3);
(12) and (4) demolding to prepare the large-diameter PHC tubular pile of the double-layer reinforcement cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110286318.0A CN113026726A (en) | 2021-03-17 | 2021-03-17 | Large-diameter PHC (prestressed high-strength concrete) tubular pile of double-layer reinforcement cage and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110286318.0A CN113026726A (en) | 2021-03-17 | 2021-03-17 | Large-diameter PHC (prestressed high-strength concrete) tubular pile of double-layer reinforcement cage and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113026726A true CN113026726A (en) | 2021-06-25 |
Family
ID=76471264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110286318.0A Pending CN113026726A (en) | 2021-03-17 | 2021-03-17 | Large-diameter PHC (prestressed high-strength concrete) tubular pile of double-layer reinforcement cage and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113026726A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277788A (en) * | 2021-12-06 | 2022-04-05 | 东南大学 | Super-large diameter combined pile for offshore wind power |
| CN114351697A (en) * | 2021-12-06 | 2022-04-15 | 东南大学 | Super-large-diameter prestressed concrete tubular pile for offshore wind power and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003027473A (en) * | 2001-07-17 | 2003-01-29 | Oak:Kk | Existing vibration isolation pile and formation method of cast-in-place vibration isolation pile |
| CN202610797U (en) * | 2012-05-22 | 2012-12-19 | 张俊峰 | Prestress solid concrete precast pile |
| CN104420463A (en) * | 2013-08-26 | 2015-03-18 | 青岛兴河建材有限公司 | Concrete pre-stressed square pile |
| CN204875763U (en) * | 2015-07-01 | 2015-12-16 | 长安大学 | Stake of part prestressing force Y shape precast reinforced concrete |
| CN106272953A (en) * | 2016-08-16 | 2017-01-04 | 重庆市晟庄建材有限责任公司 | A kind of processing method of prestressed concrete reinforcing steel stake |
-
2021
- 2021-03-17 CN CN202110286318.0A patent/CN113026726A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003027473A (en) * | 2001-07-17 | 2003-01-29 | Oak:Kk | Existing vibration isolation pile and formation method of cast-in-place vibration isolation pile |
| CN202610797U (en) * | 2012-05-22 | 2012-12-19 | 张俊峰 | Prestress solid concrete precast pile |
| CN104420463A (en) * | 2013-08-26 | 2015-03-18 | 青岛兴河建材有限公司 | Concrete pre-stressed square pile |
| CN204875763U (en) * | 2015-07-01 | 2015-12-16 | 长安大学 | Stake of part prestressing force Y shape precast reinforced concrete |
| CN106272953A (en) * | 2016-08-16 | 2017-01-04 | 重庆市晟庄建材有限责任公司 | A kind of processing method of prestressed concrete reinforcing steel stake |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277788A (en) * | 2021-12-06 | 2022-04-05 | 东南大学 | Super-large diameter combined pile for offshore wind power |
| CN114351697A (en) * | 2021-12-06 | 2022-04-15 | 东南大学 | Super-large-diameter prestressed concrete tubular pile for offshore wind power and construction method thereof |
| CN114351697B (en) * | 2021-12-06 | 2023-09-12 | 东南大学 | Super-large-diameter prestressed concrete tubular pile for offshore wind power and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113026726A (en) | Large-diameter PHC (prestressed high-strength concrete) tubular pile of double-layer reinforcement cage and preparation method thereof | |
| CN201310090Y (en) | Prestressed steel pipe concrete pile | |
| CN102296753A (en) | Hollow column member with built-in high tensile steel bars and pipes for confinement of ultra high performance concrete | |
| CN105569183A (en) | Hollow interlayer steel tube concrete column base joint | |
| CN114134883B (en) | Low-prestress-degree high-ductility mixed reinforced concrete pile and manufacturing method thereof | |
| CN201330395Y (en) | Pretensioning prestressed concrete hollow shaped square pile | |
| CN106836645B (en) | Thin wall concrete column in prefabricated cavity formula | |
| CN203613533U (en) | Reinforced prestressed pipe pile | |
| CN203603149U (en) | Multipurpose pre-stress preformed pile with changeable strength | |
| CN216194672U (en) | Mixed reinforcement precast pile | |
| CN215168600U (en) | Steel pipe concrete combination formula tower section of thick bamboo | |
| CN115772848A (en) | Single-layer reinforcement hollow prefabricated pier with built-in metal corrugated pipe | |
| CN202023189U (en) | Hollow concrete square pile for foundation | |
| CN113846628A (en) | Mixed reinforcement precast pile and production method thereof | |
| CN113585247B (en) | Reinforcement cage for prestressed concrete pipe pile and manufacturing method thereof | |
| CN113585620A (en) | Prestressed double-web steel reinforced concrete beam | |
| CN112112188A (en) | Polygonal cylindrical foundation for offshore wind power | |
| CN2285330Y (en) | Pre-fabricated concrete square pile tip | |
| CN112360697A (en) | Steel pipe concrete truss combination formula tower section of thick bamboo | |
| CN201330396Y (en) | Prestressed concrete hollow square pile with high bearing capacity | |
| CN111155548A (en) | Prestressed anchor bolt foundation | |
| CN218508451U (en) | Universal component for foundation pit assembled inner support | |
| CN212427071U (en) | Five solid square piles that construction used | |
| CN220953362U (en) | Prefabricated prestressed concrete hollow square pile | |
| CN105672573A (en) | High-strength concrete column with combined spiral hoops and square steel pipes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210625 |