CN110438982A - Tubular pile end plate and tubular pile connection method - Google Patents
Tubular pile end plate and tubular pile connection method Download PDFInfo
- Publication number
- CN110438982A CN110438982A CN201910739905.3A CN201910739905A CN110438982A CN 110438982 A CN110438982 A CN 110438982A CN 201910739905 A CN201910739905 A CN 201910739905A CN 110438982 A CN110438982 A CN 110438982A
- Authority
- CN
- China
- Prior art keywords
- upper head
- hole
- bottom plate
- tubular pole
- flange
- 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
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 238000005728 strengthening Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a tubular pile end plate and a tubular pile connecting method, relates to the technical field of tubular pile installation and application in the building industry, and solves the technical problem that the existing tubular pile end plate is difficult to position during installation in the prior art. The pipe pile positioning device comprises an upper end plate and a lower end plate, wherein the upper end plate and the lower end plate are both of a disc structure, the upper end plate is provided with a tapered flange, the lower end plate is provided with a through hole, the flange is quickly and adaptively connected with the through hole under the guiding action of a flange conical surface, waist-shaped holes are formed in the upper end plate and the lower end plate, and the upper end plate and the lower end plate are connected through threaded fasteners penetrating through the two waist-shaped holes.
Description
Technical field
The present invention relates to building trade tubular poles to install applied technical field, more particularly, to a kind of pile end board and tubular pole
Connection method.
Background technique
Pile end board is a kind of discoid part, most commonly seen in pipeline engineering, and in building trade, pile end board is main
Connection for concrete foundation tubular pole.The existing pile end board location structure radial distribution for concrete foundation tubular pole
In end plate, location structure could be directed at after needing to rotate tubular pole and is positioned, tubular pole is made to be not easy to position, and spiral shell is used between tubular pole
It tethers and needs to correspond bolt hole when connecing, then fixed with bolt, time and effort consuming.
Summary of the invention
The purpose of the present invention is to provide a kind of pile end board and tubular pole connection methods, to solve to exist in the prior art
Existing pile tube end plate installation when be not easy the technical issues of positioning.
To achieve the above object, the present invention provides following technical schemes:
The present invention provides a kind of pile end board, including upper head plate and bottom plate, and the upper head plate and the bottom plate cooperate
It can be limited after connection and fix two tubular poles to be cooperated, wherein
The upper head plate and the bottom plate are the outer diameter that disc structure and its diameter are all larger than tubular pole to be cooperated, described
Upper head plate includes the flange with taper being arranged centered on its center of circle, and the bottom plate includes being opened up centered on its center of circle
Through-hole, the taper of the through-hole is identical as the taper of the flange, is made by the guiding role of the flange conical surface described convex
Edge is quickly adapted with the through-hole and connect；
The upper head plate circumferentially offers at least three first the first waist-shaped holes of waist-shaped hole, the lower end at outer rim
Plate offers at least three second waist-shaped holes close to peripheral edge portion, installs spiral shell in first waist-shaped hole and second waist-shaped hole
Line fastener is tubular pole to be cooperated to be connected.
Optionally, the flange outer wall has the first fixed tooth, the through-hole along the bus radial distribution of the conical surface where it
It is provided on inner wall and fixes tooth with the described first fixed tooth compatible second.
Optionally, for the upper head plate at least provided with a reinforcing ring, the reinforcing ring is to be with the upper head plate center of circle
The cyclic structure at center, the bottom plate are provided with the strengthening groove matched with the reinforcing ring.
Optionally, the interface of the reinforcing ring and the strengthening groove is rectangle.
Optionally, the quantity of the reinforcing ring is 3, and the diameter of three reinforcing rings successively successively decreases, and adjacent described
It is separated by 1-2cm between reinforcing ring.
Optionally, the end face of the bottom plate is welded with containing rack, and the containing rack is located in the tubular pole inner cavity, described
Containing rack can carry concrete after carrying filler.
Optionally, the containing rack includes pedestal and at least three connecting columns, and the pedestal includes annulus and cross column, institute
It states cross column to be welded in the annulus, the first end of three connecting columns is connect with the bottom plate, three companies
The second end for connecing column is welded with the annulus.
Optionally, the maximum gauge of the through-hole is equal with the maximum gauge of the flange.
Optionally, the threaded fastener is bolt.
A kind of tubular pole connection method using any pile end board of the above claim and includes the following steps,
A: the first tubular pole that top is fixed with bottom plate is driven underground, and bottom is fixed with to the second tubular pole of upper head plate
Being suspended on first tubular pole declines second tubular pole slowly；
B: flange and through-hole cooperation realize guide-localization and realize the company between first tubular pole and second tubular pole
It connects；
C: threaded fastener is passed through into first waist-shaped hole and second waist-shaped hole and fastens the threaded fastener
The fixed upper head plate and the bottom plate.
The present invention provides a kind of pile end board, including upper head plate and bottom plate, and the upper head plate and the bottom plate are
Disc structure, the upper head plate are provided with the flange with taper, and the bottom plate is provided with through-hole, pass through the flange conical surface
Guiding role the flange is adapted quickly with the through-hole connect, the upper head plate and the bottom plate are provided with waist
Type hole, upper head plate are connected after connecting with bottom plate by the threaded fastener being arranged in two waist-shaped holes, and the present invention passes through one
The guiding role of the guiding conical surface, which is quickly oriented to, makes being located by connecting simply rapidly between tubular pole.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of detonation configuration cross-sectional view of pile end board of the present invention；
Fig. 2 is the upper head plate bottom view of pile end board；
Fig. 3 is the containing rack structural schematic diagram of pile end board.
1, upper head plate in figure；2, bottom plate；3, flange；4, through-hole；5, the first waist-shaped hole；6, the second waist-shaped hole；7, first
Fixed tooth；8, the second fixed tooth；9, reinforcing ring；10, annulus；11, cross column；12, connecting column.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
The present invention provides a kind of pile end board, as depicted in figs. 1 and 2, including upper head plate 1 and bottom plate 2, the upper head plate
1 be cooperatively connected with the bottom plate 2 after can limit and fix two tubular poles to be cooperated, the upper head plate 1 and the bottom plate 2 are equal
For disc structure and its diameter is all larger than the outer diameter of tubular pole to be cooperated, and is convenient for greater than the part of tubular pole outer diameter solid by mechanical structure
It is fixed, avoid the problem of welding time and effort consuming；The upper head plate 1 includes the flange with taper being arranged centered on its center of circle
3, the bottom plate 2 includes the through-hole 4 opened up centered on its center of circle, and flange 3 and through-hole 4 are disposed as one, are easily installed
Positioning, and existing positioning device is set on the end face of pile end board and at least there are two positioning devices for design, in positioning
It needs to rotate tubular pole so that the positioning device for being located at upper head plate 1 and bottom plate 2 matches realization locating effect, relative to this
The prior art keeps installation more troublesome for invention；The taper of the through-hole 4 is identical as the taper of the flange 3 simultaneously, can
Increase the indirect contact area of through-hole 4 and flange 3, makes uniform force, ensure that reliability of the invention, the present invention pass through
The guiding role of 3 conical surface of flange is adapted the flange 3 quickly with the through-hole 4 to connect, make to determine between tubular pole
Position connection is easy to accomplish；
The upper head plate 1 circumferentially offers at least three first waist-shaped holes, 5 first waist-shaped hole 5 at outer rim, described
Bottom plate 2 offers at least three second waist-shaped holes 6, first waist-shaped hole 5 and second waist-shaped hole 6 close to peripheral edge portion
Interior installation threaded fastener is tubular pole to be cooperated to be connected, and since waist-shaped hole has certain radian, can compensate for tubular pole positioning and connects
The dislocation between connecting hole when connecing on upper end cover and lower cover makes threaded fastener be easy to device to hole connection upper end cover and lower end
Lid；Threaded fastener can limit the power on tubular pole axial direction.
Optionally embodiment, 3 outer wall of flange have first to consolidate along the bus radial distribution of the conical surface where it
Fixed tooth 7 is provided with second fixed tooth 8 compatible with the described first fixed tooth 7 on 4 inner wall of through-hole.
3 outer wall of flange of the present invention has the first fixed tooth 7, the through-hole along the bus radial distribution of the conical surface where it
It is provided on 4 inner walls and fixes tooth 8 with the described first fixed tooth 7 compatible second, circumferential direction displacement and part can be limited
The shearing of radial direction can cooperate waist-shaped hole stress, avoid the waist-shaped hole for being fixed with screw connection structure by circumferential direction
Power；
Or fixed toothing can also design on the contact surface of pile end board, keep its limitation circumferentially displaced.
Optionally embodiment, the upper head plate 1 is at least provided with a reinforcing ring 9, and the reinforcing ring 9 is with institute
The cyclic structure centered on 1 center of circle of upper head plate is stated, the bottom plate 2 is provided with the strengthening groove matched with the reinforcing ring 9.
For upper head plate 1 of the present invention at least provided with a reinforcing ring 9, the reinforcing ring 9 is with 1 center of circle of upper head plate
Centered on cyclic structure, the bottom plate 2 is provided with the strengthening groove matched with the reinforcing ring 9, the setting energy of reinforcing ring 9
So that pile end board is born certain radial force, enhances the stress-bearing capability of pile end board, pile end board is made more may be used by radial force
It leans on.
The interface of optionally embodiment, the reinforcing ring 9 and the strengthening groove is rectangle.
The interface of reinforcing ring 9 of the present invention and the strengthening groove is rectangle, which makes power suffered by reinforcing ring 9 not
Different directions being broken down into, so that the side of reinforcing ring 9 is able to bear the maximum radial force that it bears, without will lead to stress
The unstable situation of pile end board structure stress afterwards.
Optionally embodiment, the quantity of the reinforcing ring 9 are 3, and the diameter of three reinforcing rings 9 is successively passed
Subtract, and is separated by 1-2cm between the adjacent reinforcing ring 9.
The diameter of three reinforcing rings 9 of the invention successively successively decreases, and is separated by 1-2cm between the adjacent reinforcing ring 9, if
It is equipped with 3 reinforcing rings 9 and is able to bear more radial forces, use pile end board relatively reliable.
Optionally embodiment, as shown in figure 3, the end face of the bottom plate 2 is welded with containing rack, the containing rack
In the tubular pole inner cavity, the containing rack can carry concrete after carrying filler.
The end face of bottom plate 2 of the present invention is welded with containing rack, and the containing rack is located in the tubular pole inner cavity, described
To interior fill concrete after containing rack carrying filler, concrete height is slowly risen by the bottom of containing rack, until concrete
Height can not have subject to upper head plate 1, which can make the junction of pile end board filled with concrete, increase
The intensity of junction keeps tubular pole connection relatively reliable.
Optionally embodiment, the containing rack include pedestal and at least three connecting columns 12, and the pedestal includes
Annulus 10 and cross column 11, the cross column 11 are welded in the annulus 10, the first end of three connecting columns 12 with
The bottom plate 2 connects, and the second end of three connecting columns 12 is welded with the annulus 10.
Pedestal of the present invention is to be welded with cross column 11 in annulus 10, so when not adding filler in containing rack, pedestal
Concrete can be leaked through, before two tubular poles connect, filler is placed in the containing rack of bottom plate 2 and is led to after the connection of two tubular poles
The containing rack pedestal positioned at upper tubular pole is crossed by concrete casting into tubular pole, makes tubular pole junction fill concrete, by this
Structure can greatly increase the intensity of tubular pole coupling part.
Optionally embodiment, the maximum gauge of the through-hole 4 are equal with the maximum gauge of the flange 3.
The maximum gauge of through-hole 4 of the present invention is equal with the maximum gauge of the flange 3, which enables flange 3
Just cooperate with through-hole 4, keeps position error smaller, be connected and fixed work convenient for tubular pole.
Optionally embodiment, the threaded fastener are bolt.
Threaded fastener of the present invention is bolt, and fixation of the invention can be made relatively reliable.
A kind of tubular pole connection method using any pile end board of the above claim and includes the following steps,
A: the first tubular pole that top is fixed with bottom plate 2 is driven underground, and bottom is fixed with to the second pipe of upper head plate 1
Stake, which is suspended on first tubular pole, declines second tubular pole slowly；
B: flange 3 and the cooperation of through-hole 4 are realized guide-localization and are realized between first tubular pole and second tubular pole
Connection；
C: threaded fastener is passed through into first waist-shaped hole 5 and second waist-shaped hole 6 and fastens the screw threads for fastening
The fixed upper head plate 1 of part and the bottom plate 2.
Above-mentioned tubular pole connection method can be made by the guiding role of 3 conical surface of flange the flange 3 quickly with institute
It states through-hole 4 and is adapted connection, avoid existing location structure and need in advance by the location structure for two tubular poles being connected to just
The problem of could installing, saves the set-up time, meanwhile, upper head plate 1 is fixed with bottom plate 2 by waist-shaped hole, waist-shaped hole
The location error that can compensate for upper head plate 1 and bottom plate 2 is set, makes upper head plate 1 and bottom plate 2 can some dislocation of position
Enough upper head plate 1 is connect with bottom plate 2 using threaded connector, it is easy to use, it is quick for installation.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of pile end board, it is characterised in that: including upper head plate (1) and bottom plate (2), the upper head plate (1) and it is described under
End plate (2) can limit after being cooperatively connected and fix two tubular poles to be cooperated, wherein
The upper head plate (1) and the bottom plate (2) are the outer diameter that disc structure and its diameter are all larger than tubular pole to be cooperated, institute
Stating upper head plate (1) includes the flange (3) with taper being arranged centered on its center of circle, and the bottom plate (2) includes with its circle
The taper of the through-hole (4) opened up centered on the heart, the through-hole (4) is identical as the taper of the flange (3), passes through the flange
(3) guiding role of the conical surface is adapted the flange (3) quickly with the through-hole (4) to connect；
The upper head plate (1) circumferentially offers (5) first waist-shaped hole (5) of at least three first waist-shaped holes, institute at outer rim
It states bottom plate (2) and offers at least three second waist-shaped holes (6) close to peripheral edge portion, first waist-shaped hole (5) and described the
Installation threaded fastener is in two waist-shaped holes (6) tubular pole to be cooperated to be connected.
2. pile end board described in accordance with the claim 1, it is characterised in that: mother of flange (3) outer wall along the conical surface where it
First fixed tooth (7) are distributed in beta radiation shape, are provided on through-hole (4) inner wall and are adapted with described first fixed tooth (7)
Second fixed tooth (8).
3. pile end board described in accordance with the claim 1, it is characterised in that: the upper head plate (1) is reinforced at least provided with one
Ring (9), the reinforcing ring (9) are the cyclic structure centered on the upper head plate (1) center of circle, and the bottom plate (2) is provided with
The strengthening groove matched with the reinforcing ring (9).
4. pile end board described in accordance with the claim 3, it is characterised in that: the interface of reinforcing ring (9) and the strengthening groove
It is rectangle.
5. pile end board described in accordance with the claim 3, it is characterised in that: the quantity of the reinforcing ring (9) is 3, three institutes
The diameter for stating reinforcing ring (9) successively successively decreases, and is separated by 1-2cm between the adjacent reinforcing ring (9).
6. pile end board described in accordance with the claim 1, it is characterised in that: the end face of the bottom plate (2) is welded with containing rack,
The containing rack is located in the tubular pole inner cavity, and the containing rack can carry concrete after carrying filler.
7. pile end board according to claim 6, it is characterised in that: the containing rack includes pedestal and at least three connections
Column (12), the pedestal include annulus (10) and cross column (11), and the cross column (11) is welded in the annulus (10), and three
The first end of a connecting column (12) is connect with the bottom plate (2), the second end of three connecting columns (12) with
Annulus (10) welding.
8. pile end board described in accordance with the claim 1, it is characterised in that: the maximum gauge and the flange of the through-hole (4)
(3) maximum gauge is equal.
9. pile end board described in accordance with the claim 1, it is characterised in that: the threaded fastener is bolt.
10. a kind of tubular pole connection method, it is characterised in that: using any pile end board of claim 1-9 and including such as
Lower step,
A: the first tubular pole that top is fixed with bottom plate (2) is driven underground, and bottom is fixed with to the second pipe of upper head plate (1)
Stake, which is suspended on first tubular pole, declines second tubular pole slowly；
B: flange (3) and through-hole (4) cooperation are realized guide-localization and are realized between first tubular pole and second tubular pole
Connection；
C: threaded fastener is passed through into first waist-shaped hole (5) and second waist-shaped hole (6) and fastens the screw threads for fastening
The fixed upper head plate (1) of part and the bottom plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910739905.3A CN110438982A (en) | 2019-08-12 | 2019-08-12 | Tubular pile end plate and tubular pile connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910739905.3A CN110438982A (en) | 2019-08-12 | 2019-08-12 | Tubular pile end plate and tubular pile connection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110438982A true CN110438982A (en) | 2019-11-12 |
Family
ID=68434681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910739905.3A Pending CN110438982A (en) | 2019-08-12 | 2019-08-12 | Tubular pile end plate and tubular pile connection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110438982A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227351A (en) * | 2020-10-01 | 2021-01-15 | 蒋金英 | Lock catch type connecting welding-free tubular pile end plate |
| CN114351749A (en) * | 2022-01-25 | 2022-04-15 | 安徽省公路桥梁工程有限公司 | Pile plate type road base pipe pile top connecting mechanism and construction method thereof |
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| KR20110095693A (en) * | 2010-02-19 | 2011-08-25 | 최성희 | Coupling apparatus of concrete pile |
| CN103205981A (en) * | 2013-03-22 | 2013-07-17 | 广东明阳风电产业集团有限公司 | Positioning structure for installation and grouting of jacket basis of offshore wind turbine |
| CN104508210A (en) * | 2012-11-21 | 2015-04-08 | 新日铁住金株式会社 | Joint structure for steel-pipe pile, and steel-pipe pile |
| CN105484258A (en) * | 2016-01-07 | 2016-04-13 | 中淳高科桩业股份有限公司 | Foundation treatment pile and pile splicing method thereof |
| CN107338791A (en) * | 2017-07-05 | 2017-11-10 | 汤始建华建材（苏州）有限公司 | A kind of novel tubular pile sub-assembly |
| CN206752460U (en) * | 2017-05-16 | 2017-12-15 | 天津永生伟业建材有限公司 | A kind of pile end board |
| CN208152070U (en) * | 2018-03-24 | 2018-11-27 | 江苏大力神管桩有限公司 | One kind not cutting stake top and cushion cap connection structure |
-
2019
- 2019-08-12 CN CN201910739905.3A patent/CN110438982A/en active Pending
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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 |
| KR20110095693A (en) * | 2010-02-19 | 2011-08-25 | 최성희 | Coupling apparatus of concrete pile |
| CN104508210A (en) * | 2012-11-21 | 2015-04-08 | 新日铁住金株式会社 | Joint structure for steel-pipe pile, and steel-pipe pile |
| CN103205981A (en) * | 2013-03-22 | 2013-07-17 | 广东明阳风电产业集团有限公司 | Positioning structure for installation and grouting of jacket basis of offshore wind turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227351A (en) * | 2020-10-01 | 2021-01-15 | 蒋金英 | Lock catch type connecting welding-free tubular pile end plate |
| CN114351749A (en) * | 2022-01-25 | 2022-04-15 | 安徽省公路桥梁工程有限公司 | Pile plate type road base pipe pile top connecting mechanism and construction method thereof |
| CN114351749B (en) * | 2022-01-25 | 2023-10-31 | 安徽省公路桥梁工程有限公司 | Pile plate type roadbed pipe pile top connecting mechanism and construction method thereof |
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Application publication date: 20191112 |
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| RJ01 | Rejection of invention patent application after publication |