CN115012438A - Diameter-adjustable connecting structure for connecting pile top of concrete precast tubular pile with bearing platform and preparation method of diameter-adjustable connecting structure - Google Patents
Diameter-adjustable connecting structure for connecting pile top of concrete precast tubular pile with bearing platform and preparation method of diameter-adjustable connecting structure Download PDFInfo
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- CN115012438A CN115012438A CN202111524753.9A CN202111524753A CN115012438A CN 115012438 A CN115012438 A CN 115012438A CN 202111524753 A CN202111524753 A CN 202111524753A CN 115012438 A CN115012438 A CN 115012438A
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- 239000004567 concrete Substances 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 174
- 239000010959 steel Substances 0.000 claims abstract description 174
- 238000010276 construction Methods 0.000 claims abstract description 29
- 239000011178 precast concrete Substances 0.000 claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 20
- 230000002787 reinforcement Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a diameter-adjustable connecting structure for connecting a pile top of a concrete precast tubular pile with a bearing platform and a preparation method thereof, wherein the connecting structure comprises a connecting structure and core filling concrete, and the connecting structure comprises a diameter-adjustable circular steel plate supporting plate, a fixed-diameter circular steel plate supporting plate, longitudinal steel bars, transverse steel bars, nuts and fixed steel bars; the adjustable ring steel sheet layer board of diameter and the circular steel sheet layer board of fixed diameter all are located the top pipeline section of precast concrete tubular pile, the adjustable ring steel sheet layer board bearing of diameter is detained and is put on the circular steel sheet layer board of fixed diameter, vertical passing of longitudinal reinforcement the circular steel sheet layer board of fixed diameter, horizontal reinforcing bar is tied up and is fixed around longitudinal reinforcement, forms steel skeleton, the top opening part at precast concrete tubular pile is established to fixed reinforcing bar horizontal stand. The connection structure can simplify the construction process and accelerate the construction process. The invention also discloses a preparation method of the connection structure.
Description
Technical Field
The invention relates to the technical field of concrete precast tubular pile foundation construction, in particular to a diameter-adjustable connecting structure for connecting a pile top of a concrete precast tubular pile with a bearing platform and a preparation method thereof.
Background
With the rapid development of urbanization construction, the construction speed and the building height requirements of modern buildings are continuously increased, and higher requirements are put forward on the bearing capacity of the foundation. The precast concrete tubular pile is precast in a factory, has the characteristics of industrial production, high bearing capacity, capability of realizing rapid construction and the like, and is widely adopted in the industry. The connection between the precast concrete tubular pile and the bearing platform is realized by adopting embedded steel bars and core filling concrete in the prior construction so as to realize the simultaneous stress of the pile top of the precast concrete tubular pile and the bearing platform. The construction efficiency of the connection between the pile top of the concrete precast tubular pile and the bearing platform is low, time and labor are wasted, and the effect is not ideal. For example, special operations such as welders are needed, the construction quality of the tubular pile core filling concrete is not easy to control, slurry leakage and segregation are easy to occur, and the stress performance and the connection performance of the pile top are affected.
The general construction process of the connection of the concrete precast tubular pile and the bearing platform at present is as follows: a supporting plate is arranged inside a concrete precast tubular pile core, a steel reinforcement framework is welded on the supporting plate, and a bearing platform is constructed after concrete core filling. The method has the disadvantages of complex construction process, more construction procedures, needing special work such as electric welders and the like to perform crossing operation, needing to design and weld the reinforcement cage again because the actual size of the supporting plate needs to be selected according to different pile diameters, and causing concrete leakage in the pipe pile, segregation and concrete pouring quality reduction due to overlarge gap between the supporting plate and the pile core if the diameter of the supporting plate is not reasonably matched with the inner diameter of the pile core of the pipe pile, resulting in poor connection effect and poor performance, and limiting the use and popularization of the precast concrete pipe pile.
Disclosure of Invention
One of the purposes of the invention is to provide a diameter-adjustable connecting structure for connecting a pile top of a concrete precast tubular pile with a bearing platform, which can simplify the construction process flow of the concrete precast tubular pile and the bearing platform, reduce special work intersection operation and accelerate the construction process.
The above purpose of the invention is realized by the following technical scheme: a diameter adjustable connection structure for precast concrete tubular pile top is connected with cushion cap, including connection structure and core filling concrete, its characterized in that: the connecting structure comprises a circular steel plate supporting plate with an adjustable diameter, a circular steel plate supporting plate with a fixed diameter, longitudinal steel bars, transverse steel bars, nuts and fixed steel bars; the adjustable diameter circular steel plate supporting plate and the fixed diameter circular steel plate supporting plate are both positioned in a top pipe section of the concrete precast tubular pile, the adjustable diameter circular steel plate supporting plate bearing is buckled on the fixed diameter circular steel plate supporting plate, the adjustable diameter circular steel plate supporting plate can be used for manufacturing a supporting plate diameter size matched with the pipe inner diameter according to the pipe inner diameter of the concrete precast tubular pile so as to be suitable for concrete precast tubular piles with different pipe inner diameters, the longitudinal steel bars vertically penetrate through the fixed diameter circular steel plate supporting plate, the penetrating sections are provided with threads, the nuts are multiple, the longitudinal steel bars are connected with the nuts on the threads above and below the fixed diameter circular steel plate supporting plate, the longitudinal steel bars are fixed on the fixed diameter circular steel plate supporting plate by screwing the nuts, and the transverse steel bars are tied up and fixed around the longitudinal steel bars to form a steel bar framework, the top opening part at precast concrete tubular pile is erect to fixed reinforcing bar level, the size of fixed reinforcing bar is greater than precast concrete tubular pile's top opening size, fixed reinforcing bar and framework of steel reinforcement are tied up fixedly, fill out core concrete placement and fill up the pipeline section that precast concrete tubular pile is located the adjustable ring steel sheet layer board of diameter and the circular steel sheet layer board of fixed diameter, the precast concrete tubular pile is stretched out at framework of steel reinforcement's top, stretches out the end and is used for being connected with the cushion cap.
The connecting structure solves the problems of time and labor waste in the construction of the concrete precast tubular pile and the bearing platform in the prior art, simplifies the construction process flow, reduces special cross operation, and accelerates the construction process.
According to the invention, the circular steel plate supporting plate with the fixed diameter is a convex stepped round platform with one step in a small upper part and a large lower part, the circular steel plate supporting plate with the adjustable diameter is a circular plate with an opening in the middle, the opening in the middle is a stepped hole with one step in a small upper part and a large lower part, the stepped hole is matched with the stepped round platform of the circular steel plate supporting plate with the fixed diameter, and the circular steel plate supporting plate with the adjustable diameter and the circular steel plate supporting plate with the fixed diameter are buckled through the engagement of the stepped round platform and the stepped hole.
In the invention, the thread distribution length of the longitudinal steel bar is 100 mm.
In the invention, the circular steel plate supporting plate with the fixed diameter is provided with 4 circular through holes for the longitudinal steel bars to vertically pass through, and the 4 through holes are uniformly distributed on the same circumference.
In the invention, the nut is a butterfly nut with a gasket.
In the invention, the core filling concrete is micro-expansion concrete with the strength of C30.
In the invention, the fixed steel bars are two plain round steel bars which are distributed in a crisscross manner.
In the invention, the fixed steel bars adopt HRB 400-grade steel bars with the diameter of 20 mm.
In the invention, the extending end of the steel reinforcement framework, which extends out of the concrete precast tubular pile, is of a funnel-shaped structure with a wide upper part and a narrow lower part.
The invention also aims to provide the preparation method of the diameter-adjustable connecting structure for connecting the pile top of the concrete precast tubular pile and the bearing platform, and the preparation method is simple and convenient to operate.
The above object of the present invention is achieved by the following technical solutions: the preparation method of the diameter-adjustable connecting structure for connecting the pile top of the concrete precast tubular pile and the bearing platform is characterized by comprising the following steps of:
(1) preparing a circular steel plate supporting plate with an adjustable diameter, a circular steel plate supporting plate with a fixed diameter and a longitudinal steel bar, wherein the lower end of the longitudinal steel bar is a steel bar section with threads;
(2) a through hole is formed in the circular steel plate supporting plate with the fixed diameter;
(3) the lower end of the longitudinal steel bar penetrates through the through hole, and then is in threaded connection with steel bar sections, located above and below the circular steel plate supporting plate with the fixed diameter, of the longitudinal steel bar through nuts, and the longitudinal steel bar is screwed and connected to the circular steel plate supporting plate with the fixed diameter;
(4) binding and fixing the transverse steel bars around the longitudinal steel bars to form a steel bar framework, wherein the top of the steel bar framework extends out of the concrete precast tubular pile;
(5) the circular steel plate supporting plate with the adjustable diameter, the circular steel plate supporting plate with the fixed diameter and the steel reinforcement framework are integrally placed into a top pipe section of the concrete precast pipe pile, then core filling concrete is poured, the core filling concrete is vibrated and compactly poured to the pile top elevation of the concrete precast pipe pile, and the whole connecting structure is formed after the core filling concrete is solidified.
Compared with the prior art, the invention has the following remarkable effects:
firstly, through setting up adjustable diameter ring steel sheet layer board, realized in the work progress according to the arbitrary type of selecting of design pile footpath, solve on-the-spot temporary design and processing, save time for construction speed.
Through the concave-convex type engagement buckling connection of the circular steel plate supporting plate with the adjustable diameter and the circular steel plate supporting plate with the fixed diameter, the 1+ X (fixed and adjustable diameter) combination is selected in the construction process, the structure is simple, the adaptability is wide, secondary processing is avoided, and materials and time are saved.
The circular steel plate supporting plate with the adjustable diameter and the circular steel plate supporting plate with the fixed diameter can be produced in a factory in a standardized, batched and refined mode, the accurate size and the reliable quality are guaranteed, and the bottom of the core filling concrete is free from slurry leakage, so that the construction quality is guaranteed, and industrial and intelligent manufacturing is realized.
And fourthly, through the mechanical connection of the threaded nuts, the non-live operation in the whole construction process is realized, the special workers such as electric welding are reduced, and the safety accidents such as electric shock are avoided.
And fifthly, the nut with the gasket is used, the anchoring requirement can be met by manual initial screwing, the use of complex connecting equipment and appliance accessories is eliminated, the construction is convenient, the construction period is saved for pile foundation construction, and the comprehensive manufacturing cost is reduced.
Sixth, the invention can guarantee the construction quality, can adjust according to the stress situation of junction of pile top of the tubular pile and cushion cap at the same time, can greatly raise the construction efficiency, and the connecting device can utilize the excess material of the project to process and make, thus has saved the construction cost
Drawings
The invention is described in further detail below with reference to the drawings and the detailed description.
FIG. 1 is a schematic overall structure diagram of a diameter-adjustable connecting structure for connecting a pile top of a concrete precast tubular pile with a bearing platform according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is an enlarged view of a portion B in fig. 1.
Description of the reference numerals:
1. a nut; 2. A circular steel plate supporting plate with a fixed diameter; 3. A circular steel plate supporting plate with adjustable diameter;
4. longitudinal reinforcing steel bars; 5. Transverse reinforcing steel bars; 6. Filling core concrete; 7. Fixing the steel bars;
8. and (5) prefabricating the tubular pile by concrete.
Detailed Description
The diameter-adjustable connecting structure for connecting the pile top of the concrete precast tubular pile and the bearing platform, as shown in fig. 1 to fig. 3, comprises a connecting structure and core filling concrete 6, wherein the core filling concrete 6 is micro-expansion concrete with the strength of C30, and the connecting structure comprises an adjustable-diameter circular steel plate supporting plate 3, a fixed-diameter circular steel plate supporting plate 2, longitudinal steel bars 4, transverse steel bars 5, nuts 1 and fixed steel bars 7. The outer diameter of the concrete precast tubular pile 8 is 400mm, the wall thickness is 95 mm, the aperture in the pipe is 210mm, and the length is 14 m.
Adjustable diameter ring steel sheet layer board 3 and the circular steel sheet layer board 2 of fixed diameter all are located the top pipeline section of precast concrete tubular pile 8, adjustable diameter ring steel sheet layer board 3 bearing is detained and is put on the circular steel sheet layer board 2 of fixed diameter, adjustable diameter ring steel sheet layer board 3 can come the layer board diameter size of preparation and pipe internal diameter looks adaptation according to the pipe internal diameter size of precast concrete tubular pile 8, with the precast concrete tubular pile 8 that is applicable to different pipe internal diameters, in this embodiment, the diameter of adjustable diameter ring steel sheet layer board 3 is 210mm, the same with precast concrete tubular pile 8's aperture.
Circular through-hole that supplies 4 vertical passes of vertical reinforcing bar is seted up to fixed diameter circular steel sheet layer board 2, through-hole quantity is 4, 4 through-hole evenly distributed is on same circumference, the diameter of vertical reinforcing bar 4 is 20mm, vertical reinforcing bar 4 vertically passes fixed diameter circular steel sheet layer board 2, it has the screw thread to pass the section, the thread distribution length of vertical reinforcing bar 4 is 100mm, nut 1 is a plurality of butterfly nuts from taking the gasket, vertical reinforcing bar 4 all is connected with nut 1 on the screw thread of the top of fixed diameter circular steel sheet layer board 2 and below, fix vertical reinforcing bar 4 on fixed diameter circular steel sheet layer board 2 through screwing nut 1, horizontal reinforcing bar 5 is tied up and is fixed around vertical reinforcing bar 4, form steel bar skeleton, 7 horizontal erections of fixed reinforcing bar are at the top opening part of precast concrete tubular pile 8.
In this embodiment, the circular steel sheet layer board 2 of fixed diameter is the convex ladder round platform that big end down has one-level step, round platform upper portion diameter is 110mm, round platform lower part diameter is 150mm, the adjustable diameter ring steel sheet layer board 3 is the plectane of middle trompil, this middle trompil is the big end down's that has one-level step with the circular steel sheet layer board 2 of fixed diameter's ladder round platform looks adaptation shoulder hole, the adjustable diameter ring steel sheet layer board 3 of diameter passes through ladder round platform and shoulder hole interlock lock joint with the circular steel sheet layer board 2 of fixed diameter.
In this embodiment, fixed reinforcing bar 7 is two diameters and is 20 mm's HRB400 level plain steel muscle, two plain steel muscle are the cross form and distribute, fixed reinforcing bar 7's size is greater than the top open size of concrete precast tubular pile 8, fixed reinforcing bar 7 ties up fixedly with framework of steel reinforcement, fill core concrete 6 and pour and fill up the pipe section that concrete precast tubular pile 8 is located diameter adjustable ring steel sheet layer board 3 and fixed diameter circular steel sheet layer board 2, framework of steel reinforcement's top stretches out concrete precast tubular pile 8, stretch out the end and be narrow infundibulate structure down for last width, it is used for being connected with the cushion cap to stretch out the end.
The connecting structure of the embodiment greatly improves the process of the concrete precast tubular pile, improves the connection performance of the concrete precast tubular pile and the bearing platform, improves the stress performance of the concrete pile foundation joint, has strong universality, can realize standardized, batched and refined production in a factory, and has high construction speed and good applicability.
The preparation method of the diameter-adjustable connecting structure for connecting the pile top of the concrete precast tubular pile with the bearing platform comprises the following steps of:
1. preparing a circular steel plate supporting plate 3 with an adjustable diameter, a circular steel plate supporting plate 2 with a fixed diameter and longitudinal steel bars 4, placing the longitudinal steel bars 4 on a threading machine for thread engraving, wherein the lower end of the longitudinal steel bars is a steel bar section with threads, and inversely buckling the circular steel plate supporting plate 3 with the adjustable diameter on the circular steel plate supporting plate 2 with the fixed diameter;
2. a through hole is arranged on the circular steel plate supporting plate 2 with a fixed diameter;
3. the lower end of a longitudinal steel bar 4 penetrates through the through hole, then is in threaded connection with steel bar sections, located above and below the circular steel plate supporting plate 2 with the fixed diameter, of the longitudinal steel bar 4 through nuts 1, and the longitudinal steel bar 4 is connected to the circular steel plate supporting plate 2 with the fixed diameter in a screwing mode;
4. binding and fixing the transverse steel bars 5 around the longitudinal steel bars 4 to form a steel bar framework, wherein the top of the steel bar framework extends out of the concrete precast tubular pile 8;
5. the diameter-adjustable circular steel plate supporting plate 3, the fixed diameter circular steel plate supporting plate 2 and the steel reinforcement framework are integrally placed into a top pipe section of the concrete precast tubular pile 8, then the core filling concrete 6 is poured, the core filling concrete 6 is vibrated and compactly poured to the pile top elevation of the concrete precast tubular pile 8, and the core filling concrete 6 is solidified to form the whole connecting structure.
The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.
Claims (10)
1. A diameter adjustable connection structure for precast concrete tubular pile top is connected with cushion cap, including connection structure and core concrete (6), its characterized in that fills: the connecting structure comprises a circular steel plate supporting plate (3) with an adjustable diameter, a circular steel plate supporting plate (2) with a fixed diameter, a longitudinal steel bar (4), a transverse steel bar (5), a nut (1) and a fixed steel bar (7); the adjustable diameter circular steel plate supporting plate (3) and the fixed diameter circular steel plate supporting plate (2) are both positioned in a top pipe section of the concrete precast tubular pile (8), the adjustable diameter circular steel plate supporting plate (3) is supported and buckled on the fixed diameter circular steel plate supporting plate (2), the adjustable diameter circular steel plate supporting plate (3) can be manufactured with the diameter of the pipe according to the diameter of the pipe of the concrete precast tubular pile (8) so as to be suitable for the concrete precast tubular piles (8) with different pipe diameters, the longitudinal steel bars (4) vertically pass through the fixed diameter circular steel plate supporting plate (2), the passing sections are provided with threads, the nuts (1) are multiple, the longitudinal steel bars (4) are connected with the nuts (1) on the threads above and below the fixed diameter circular steel plate supporting plate (2), and the longitudinal steel bars (4) are fixed on the fixed diameter circular steel plate supporting plate (2) by screwing the nuts (1), transverse reinforcement (5) are tied up and are fixed around longitudinal reinforcement (4), form framework of steel reinforcement, the top opening part in precast concrete tubular pile (8) is erect to fixed reinforcing bar (7) level, the size of fixed reinforcing bar (7) is greater than the top opening size of precast concrete tubular pile (8), fixed reinforcing bar (7) are tied up fixedly with framework of steel reinforcement, fill core concrete (6) and pour and fill up concrete precast tubular pile (8) and lie in the pipeline section on adjustable diameter ring steel sheet layer board (3) and the circular steel sheet layer board of fixed diameter (2), framework of steel reinforcement's top stretches out precast concrete tubular pile (8), stretches out the end and is used for being connected with the cushion cap.
2. The connection structure with the adjustable diameter for the precast concrete tubular pile top and the bearing platform according to claim 1, which is characterized in that: the circular steel plate supporting plate (2) with the fixed diameter is a convex step round platform with one step in the upper part and the lower part, the circular steel plate supporting plate (3) with the adjustable diameter is a circular plate with a middle opening, the middle opening is a step hole with one step in the upper part and the lower part, the step round platform is matched with the circular steel plate supporting plate (2) with the fixed diameter, and the circular steel plate supporting plate (3) with the adjustable diameter is buckled with the circular steel plate supporting plate (2) with the fixed diameter through the step round platform and the step hole in an occluded manner.
3. The connection structure with adjustable diameter for connecting the pile top of the concrete precast tubular pile with the bearing platform according to claim 1, is characterized in that: the thread distribution length of the longitudinal steel bar (4) is 100 mm.
4. The connection structure with adjustable diameter for connecting the pile top of the concrete precast tubular pile with the bearing platform according to claim 1, is characterized in that: the circular steel plate supporting plate (2) with the fixed diameter is provided with circular through holes for the longitudinal steel bars (4) to vertically penetrate through, the number of the through holes is 4, and the 4 through holes are uniformly distributed on the same circumference.
5. The connection structure with the adjustable diameter for the precast concrete tubular pile top and the bearing platform according to claim 1, which is characterized in that: the nut (1) is a butterfly nut with a gasket.
6. The connection structure with the adjustable diameter for the precast concrete tubular pile top and the bearing platform according to claim 1, which is characterized in that: the core filling concrete (6) adopts micro-expansion concrete with the strength of C30.
7. The connection structure with adjustable diameter for connecting the pile top of the concrete precast tubular pile with the bearing platform according to claim 1, is characterized in that: the fixed reinforcing steel bars (7) are two smooth round reinforcing steel bars which are distributed in a cross shape.
8. The connection structure with the adjustable diameter for the precast concrete tubular pile top and the bearing platform according to claim 6, characterized in that: HRB 400-grade steel bars with the diameter of 20mm are adopted as the fixed steel bars (7).
9. The connection structure with the adjustable diameter for the precast concrete tubular pile top and the bearing platform according to claim 1, which is characterized in that: the stretching end of the steel reinforcement framework, stretching out of the concrete precast tubular pile (8), is of a funnel-shaped structure with a wide upper part and a narrow lower part.
10. The method for preparing a connection construction with adjustable diameter for connecting a pile top of a precast concrete tubular pile with a cap according to any one of claims 1 to 9, comprising the steps of:
(1) preparing a circular steel plate supporting plate (3) with an adjustable diameter, a circular steel plate supporting plate (2) with a fixed diameter and longitudinal steel bars (4), wherein the lower ends of the longitudinal steel bars (4) are steel bar sections with threads;
(2) a through hole is formed in the circular steel plate supporting plate (2) with the fixed diameter;
(3) the lower end of the longitudinal steel bar (4) penetrates through the through hole, then the longitudinal steel bar (4) is in threaded connection with steel bar sections above and below the circular steel plate supporting plate (2) with the fixed diameter through the nut (1), and the longitudinal steel bar (4) is screwed and connected to the circular steel plate supporting plate (2) with the fixed diameter;
(4) binding and fixing the transverse steel bars (5) around the longitudinal steel bars (4) to form a steel bar framework, wherein the top of the steel bar framework extends out of the concrete precast tubular pile (8);
(5) the diameter-adjustable circular steel plate supporting plate (3), the fixed diameter circular steel plate supporting plate (2) and the steel reinforcement framework are integrally placed into a top pipe section of the concrete precast tubular pile (8), then core filling concrete (6) is poured, the core filling concrete (6) is vibrated and compactly poured to a pile top elevation of the concrete precast tubular pile (8), and the core filling concrete (6) is solidified to form the whole connecting structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111524753.9A CN115012438A (en) | 2021-12-14 | 2021-12-14 | Diameter-adjustable connecting structure for connecting pile top of concrete precast tubular pile with bearing platform and preparation method of diameter-adjustable connecting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111524753.9A CN115012438A (en) | 2021-12-14 | 2021-12-14 | Diameter-adjustable connecting structure for connecting pile top of concrete precast tubular pile with bearing platform and preparation method of diameter-adjustable connecting structure |
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| CN115012438A true CN115012438A (en) | 2022-09-06 |
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|---|---|---|---|---|
| CN1418277A (en) * | 2000-07-20 | 2003-05-14 | 斯马泰克工程技术株式会社 | Apparatus and structure for connecting head of steel pipe pile and concrete footing |
| JP2011058163A (en) * | 2009-09-04 | 2011-03-24 | Jfe Steel Corp | Steel pipe/concrete compound pile and joint structure of the same |
| CN208733659U (en) * | 2018-08-13 | 2019-04-12 | 上海象璟建筑设计有限公司 | A kind of jointing of resistance to plucking hollow tubular piles of prestressed concrete and cushion cap |
| CN212335977U (en) * | 2020-03-13 | 2021-01-12 | 扬州市建筑设计研究院有限公司 | Hollow pile filling core for composite foundation |
| CN113356254A (en) * | 2021-06-15 | 2021-09-07 | 五冶集团上海有限公司 | Connecting device for pile top and bearing platform of PHC (prestressed high-strength concrete) pipe pile and construction method of connecting device |
| CN214940090U (en) * | 2021-07-01 | 2021-11-30 | 中国电建集团贵州工程有限公司 | Core concrete construction leak protection device is irritated to tubular pile |
-
2021
- 2021-12-14 CN CN202111524753.9A patent/CN115012438A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1418277A (en) * | 2000-07-20 | 2003-05-14 | 斯马泰克工程技术株式会社 | Apparatus and structure for connecting head of steel pipe pile and concrete footing |
| JP2011058163A (en) * | 2009-09-04 | 2011-03-24 | Jfe Steel Corp | Steel pipe/concrete compound pile and joint structure of the same |
| CN208733659U (en) * | 2018-08-13 | 2019-04-12 | 上海象璟建筑设计有限公司 | A kind of jointing of resistance to plucking hollow tubular piles of prestressed concrete and cushion cap |
| CN212335977U (en) * | 2020-03-13 | 2021-01-12 | 扬州市建筑设计研究院有限公司 | Hollow pile filling core for composite foundation |
| CN113356254A (en) * | 2021-06-15 | 2021-09-07 | 五冶集团上海有限公司 | Connecting device for pile top and bearing platform of PHC (prestressed high-strength concrete) pipe pile and construction method of connecting device |
| CN214940090U (en) * | 2021-07-01 | 2021-11-30 | 中国电建集团贵州工程有限公司 | Core concrete construction leak protection device is irritated to tubular pile |
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