CN105887808A - Concrete pipe pile and construction method thereof - Google Patents
Concrete pipe pile and construction method thereof Download PDFInfo
- Publication number
- CN105887808A CN105887808A CN201610382391.7A CN201610382391A CN105887808A CN 105887808 A CN105887808 A CN 105887808A CN 201610382391 A CN201610382391 A CN 201610382391A CN 105887808 A CN105887808 A CN 105887808A
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- Prior art keywords
- pile
- stake
- pin
- pile body
- upper joint
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Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
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- 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 relates to a concrete pipe pile and a construction method thereof. The pipe pile comprises an upper section pile and a lower section pile, wherein the lower section pile is connected with the upper section pile; a plurality of pin bolts are arranged on the end surface of the pile head of the upper section pile in a circumferential direction; the lower section pile comprises a pipe pile body, prestressed reinforcing bars and a spiral hoop reinforcing bar, wherein a plurality of steel plates which are arranged on the inner wall of the end part of the lower section pile in the circumferential direction are arranged on the inner wall of the pile head of the pipe pile body; a notch used as a pile body groove is formed between every two adjacent steel plates; each steel plate corresponds to a pin bolt, two edges of each of the steel plates are folded upwards to form an inverted T-shaped sliding groove for allowing the corresponding pin bolt to be clamped, and two ends of a horizontal slot of each of the sliding grooves separately communicate with the grooves of the adjacent pile body. The construction method comprises the following steps of performing measuring and positioning; enabling the pile body to be at a proper place; performing centering, performing researching; performing pile pressing; and performing pile extension. The concrete pipe pile and the construction method thereof disclosed by the invention have the beneficial effects that the danger that the pile body is damaged caused by the lack of the stability of the pile body when a conventional prefabricated pile is in pile extension in a static pressing manner is avoided; the pipe pile is simple in structure and rapid, convenient, reliable and stable to connect, and the construction efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of concrete tubular pile and construction method thereof, especially a kind of pipe of concrete
Stake mechanical connecting structure, is mainly used in the foundation stabilization during municipal administration, industry and civil engineering are built
In field.
Background technology
Pile tube technique originates from Japan, and China took the lead in being answered at maritime provinces in generation in last century 80
With, mainly for Soft Soil Layer specific to coastal area, there is more answering at present in each province
With.The bearing capacity of traditional concrete tubular pile is only by side skin friction and the shadow of stake end frictional resistance
Ring, to increase bearing capacity, can only realize by increasing caliber or length, increase accordingly
Construction cost and difficulty are added.
In the foundation engineering that China coast is weak, the bearing capacity of pile tube end face accounts for whole pile tube and holds
Load power 10%～about 15%, the frictional force between tubular pile body and surrounding base soil is formed
Bearing capacity account for more than the 85% of whole pile tube.And the construction method of prefabricated pile is mainly hammered into shape at present
Hitting or static pressure method, all there is soil compaction effect and has piling damage etc. to lack in both approaches
Point.
The Chinese patent of Publication No. CN 204626392 U discloses a kind of prefabricated pile and is mechanically connected
Structure, including being arranged at end plate body and the connecting pin at concrete-pile two ends, end plate body
Outer rim is provided with "eight" shape groove, and the "eight" shape groove on adjacent end plate body is combined to form
The kidney slot of figure of eight structure, connecting pin is in " 8 " word suitable with described kidney slot
Shape structure, the bottom land side of "eight" shape groove is provided with pressing plate part；On the pile extension face of end plate body
It is provided with hole, at least two location, end plate body is additionally provided with for arranging prestressed steel bar
The counter sink of stretch-draw and prestressing force foundation and the stretch-draw of presstressed reinforcing steel anchoring in manufacture process
Screw hole.
The Chinese patent of Publication No. CN1603523A discloses in one apical grafting head stake button under spiral shell
And prefabricated component, relate generally to a kind of pile tube and connect button.During pile extension, two prefabricated components of pile extension
End be that several swollen draw nut mouth and corresponding top pull nut mouth, expanding screw respectively
The screw section of silk is screwed in the swollen screw thread drawing screw, and the expander of setscrew inserts top pull spiral shell
Expansion chamber and the expander of cap expand the expansion chamber at top pull nut under its end expansion pin effect
In, complete docking between prefabricated component with prefabricated component.
The tradition topmost form of preformed pile connecting is to be welded to connect, and what above patent used is all
Mechanical connection manner, its feature in avoiding because using welding connecting mode to make connector temperature
Too high thus affect the generation of prefabricated pile stress performance situation.Because during pile sinking, blank area is rapid
Meeting subsoil water, connector temperature is too high makes pile crown quench, and weld seam becomes fragile.
Summary of the invention
The technical problem to be solved is the present situation for prior art, it is provided that structure letter
Single, connect quickly, convenient, stable, a kind of concrete tubular pile that efficiency of construction is high and construction thereof
Method.
A kind of concrete tubular pile of the present invention, including upper joint stake and is connected with upper joint stake
Lower joint stake, it is characterised in that: the pile crown end face of described upper joint stake is circumferentially with multiple pin；
Described lower joint stake includes pile tube pile body, deformed bar and tie hoop, described pre-should
Power reinforcing bar axially embed described pipe pile body along pile tube pile body in portion；Described tie hoop encloses
Outer wall at described pile tube pile body；The pile crown inwall of described pile tube pile body is provided with polylith along lower joint
Stake inner wall of end is circumferentially arranged steel plate, leaves lacking as pile body groove between adjacent steel plate
Mouthful；The corresponding pin of every block plate, the described breach described in pin insertion, described steel
Plate both sides flip up the inverted T shape sliding recess formed for snapping in pin, and described slip is recessed
The translot two ends of groove connect with adjacent pile body groove respectively.
The head overall diameter of pin is between the vertical slot groove width of sliding recess and the horizontal stroke of sliding recess
Between groove groove width.
The described upper joint same basic circle of pile head end face is provided with multiple pins, wherein pin
Bottom is affixed with upper joint pile head, and the head of pin points to the upper outside saving stake.
The described upper joint same basic circle of pile head end face is provided with 4 pins, described lower joint stake
Pile crown end face inwall be provided with 4 block plates, every block plate is provided with a sliding recess.
Described lower joint stake and upper joint stake used strength of cement grade are greater than or equal to 42.5, water
Mud uses portland slag cement, portland cement, and its quality meets GB175 " general silicic acid
Salt cement "；Fine aggregate uses hard medium sand, and modulus of fineness controls at 2.3-3.5；Coarse aggregate is adopted
With rubble or cobble, flat-elongated particles is less than or equal to 5%, and maximum particle diameter is less than or equal to 23mm.
Described deformed bar uses tensile strength more than or equal to 1370MPa；Tie hoop uses
Hot-rolled carbon steel wire rods, concrete product uses cold-drawn low-carbon wire, and concrete prescription is full
Foot JC/T540 " concrete product cold-drawn low-carbon wire ", GB/T701 " mild steel hot rolling circle
Wire rod ".
The construction method of a kind of concrete tubular pile as described in the present invention, comprises the following steps:
1) measurement and positioning: put axis and each position before construction well, make a call to 1 at Zhuan Wei center
Root bar dowel, and varnish with lacquer and make mark obvious；As at softer field construction, due to stake machine
Walking can squeeze away predetermined bar dowel, therefore stake position to be redeterminated after stake machine is the most in place；
2) pile body is in place, centering, investigation: for pile press machine, by starting vertical and horizontal
Walking oil cylinder, starts piling oil cylinder by 1min in lower joint stake stake pressure people's soil by pile top align piles position
Rear stopping piling, levelling stake is in the perpendicularity of both direction；First segment stake is the most vertical, is to protect
The key of card pile quality；
3) piling: pile holder is tight by clamping oil cylinder, then makes piling oil cylinder stretch journey, by pressure
It is applied in stake；Pressure is reflected by Pressure gauge；A personage is conscientiously recorded deep during piling
Degree and the relation of pressure gauge reading, to judge quality and the bearing capacity of stake；When pressure gauge reading is dashed forward
When so rising or falling, comparison geologic information to be shut down and be analyzed, see and whether run into barrier
Or produce broken pile situation etc.；
4) pile extension: the single-unit length of stake should determine according to appointed condition and construction technology；Work as stake
When the soil layer run through accompanies thin layer sand, an end when determining the length of single-unit stake, should be avoided to be parked in
Carrying out pile extension in sandy soils, joint stake instantly is pressed onto when basseting 0.7～1.0m, just can connect
Joint stake；During pile extension, when after the lower joint recessed grain of stake pile body of upper joint stake sliding pin alignment, pass through
Artificial rotation saves stake so that above joint stake pin makes upper joint stake, lower joint stake by sliding recess
Fixing；After pile extension completes, it is inserted into deformed bar to improve the stability of whole pile body；
5) piling terminates: when pressure gauge reading reaches prespecified value, just can stop piling；
6) repeat above step, complete desired depth pile foundation construction.
Installation process: described concrete tubular pile is during squeezing into the soil body, and lower joint stake will be with upper joint
Stake pile extension action to be completed.Lower joint pile head is provided with 4 steel plates being embedded in inside pile body, steel
Plate is provided with sliding recess.Upper joint pile head is provided with 4 sliding pins, and upper joint stake alignment is provided with
Groove pile body also inserts, and rotates to an angle and can upper and lower joint stake be fixed after insertion, rotates
Deformed bar again after completing, so that pile body can be stably connected with.
The invention has the beneficial effects as follows: have employed a kind of new mechanical pile extension mode, not only avoid
Conventional prefabricated pile is by static pressure mode pile extension, owing to pile body stability deficiency makes pile body occur
The danger destroyed, and this pile tube simple structure, connect quickly, convenient, reliable, stable,
Substantially increase efficiency of construction.
Accompanying drawing explanation
Fig. 1 is the lower joint pilework figure of the present invention.
Fig. 2 is the upper joint pilework figure of the present invention.
Fig. 3 is the longitudinal sectional view of the sliding recess of the present invention.
Fig. 4 is the steel plate of the present invention and upper joint stake pin connection diagram.
Detailed description of the invention
Further illustrate the present invention below in conjunction with the accompanying drawings
Referring to the drawings:
Embodiment 1 a kind of concrete tubular pile of the present invention, including upper joint stake 1 and with
The lower joint stake 2 that upper joint stake connects, the pile crown end face of described upper joint stake 1 is circumferentially with multiple pin
Nail 11；Described lower joint stake 2 includes pile tube pile body 21, deformed bar 22 and spiral hoop
Muscle 23, described deformed bar 22 axially embeds described pipe pile along pile tube pile body 21
Body 21 is internal；Described tie hoop 23 is trapped among the outer wall of described pile tube pile body 21；Institute
State the pile crown inwall of pile tube pile body 21 to be provided with polylith and be circumferentially arranged steel plate along lower joint stake inner wall of end
24, leave the breach as pile body groove 25 between adjacent steel plate 24；Every block plate 24
A corresponding pin 11, the described breach described in pin insertion, described steel plate 24 both sides
Flip up the inverted T shape sliding recess 241 formed for snapping in pin, described sliding recess
The translot two ends of 241 connect with adjacent pile body groove 24 respectively.
The head overall diameter of pin 11 is between the vertical slot groove width of sliding recess 241 and slides recessed
Between the translot groove width of groove 241.
The described upper joint stake 1 same basic circle of pile crown end face is provided with multiple pins 11, wherein
The bottom of pin 11 is affixed with upper joint stake 1 pile crown, and the head of pin 11 points to the stake 1 of upper joint
Outside.
The described upper joint stake 1 same basic circle of pile crown end face is provided with 4 pins 11；Described
The pile crown end face inwall of lower joint stake 2 is provided with 4 block plates 24, and every block plate 24 is provided with one
Sliding recess 241.
Described lower joint stake 2 and upper joint stake 1 used strength of cement grade are greater than or equal to
42.5, cement uses portland slag cement, portland cement, and it is " logical that its quality meets GB175
With portland cement "；Fine aggregate uses hard medium sand, and modulus of fineness controls at 2.3-3.5；Slightly
Aggregate uses rubble or cobble, and flat-elongated particles is less than or equal to 5%, and maximum particle diameter is less than or equal to
23mm。
Described deformed bar 22 uses tensile strength to be more than or equal to 1370MPa；Tie hoop
23 use hot-rolled carbon steel wire rods, and concrete product uses cold-drawn low-carbon wire, concrete matter
Amount is required to meet JC/T540 " concrete product cold-drawn low-carbon wire ", GB/T701 " low-carbon (LC)
Steel hot rolling wire rod ".
The construction method of a kind of concrete tubular pile as described in the present invention, comprises the following steps:
1) measurement and positioning: put axis and each position before construction well, make a call to 1 at Zhuan Wei center
Root bar dowel, and varnish with lacquer and make mark obvious；As at softer field construction, due to stake machine
Walking can squeeze away predetermined bar dowel, therefore stake position to be redeterminated after stake machine is the most in place；
2) pile body is in place, centering, investigation: for pile press machine, by starting vertical and horizontal
Walking oil cylinder, starts piling oil cylinder by 1min in lower joint stake stake pressure people's soil by pile top align piles position
Rear stopping piling, levelling stake is in the perpendicularity of both direction；First segment stake is the most vertical, is to protect
The key of card pile quality；
3) piling: pile holder is tight by clamping oil cylinder, then makes piling oil cylinder stretch journey, by pressure
It is applied in stake；Pressure is reflected by Pressure gauge；A personage is conscientiously recorded deep during piling
Degree and the relation of pressure gauge reading, to judge quality and the bearing capacity of stake；When pressure gauge reading is dashed forward
When so rising or falling, comparison geologic information to be shut down and be analyzed, see and whether run into barrier
Or produce broken pile situation etc.；
4) pile extension: the single-unit length of stake should determine according to appointed condition and construction technology；Work as stake
When the soil layer run through accompanies thin layer sand, an end when determining the length of single-unit stake, should be avoided to be parked in
Carrying out pile extension in sandy soils, joint stake 2 instantly is pressed onto when basseting 0.7～1.0m, just can connect
Upper joint stake 1；During pile extension, when lower joint stake 2 pile body of upper joint stake 1 sliding pin 11 alignment
After recessed poor 25, rotate the stake 1 of upper joint by artificial so that above joint stake 1 pin 11 is by sliding
Groove 241 makes joint stake 1, lower joint stake 2 fix；After pile extension completes, it is inserted into prestressing force
Reinforcing bar 22 improves the stability of whole pile body；
5) piling terminates: when pressure gauge reading reaches prespecified value, just can stop piling；
6) repeat above step, complete desired depth pile foundation construction.
Installation process: described concrete tubular pile is during squeezing into the soil body, and lower joint stake will be with upper joint
Stake pile extension action to be completed.Lower joint pile head is provided with 4 steel plates being embedded in inside pile body, steel
Plate is provided with sliding recess.Upper joint pile head is provided with 4 sliding pins, and upper joint stake alignment is provided with
Groove pile body also inserts, and rotates to an angle and can upper and lower joint stake be fixed after insertion, rotates
Deformed bar again after completing, so that pile body can be stably connected with.
Content described in this specification embodiment is only the row of the way of realization to inventive concept
Lifting, protection scope of the present invention is not construed as being only limitted to the concrete shape that embodiment is stated
Formula, protection scope of the present invention also includes that those skilled in the art are caned according to present inventive concept
The equivalent technologies means expected.
Claims (7)
1. a concrete tubular pile, including upper joint stake and the lower joint stake that is connected with upper joint stake,
It is characterized in that: the pile crown end face of described upper joint stake is circumferentially with multiple pin；Under described
Joint stake includes pile tube pile body, deformed bar and tie hoop, described deformed bar edge
Pile tube pile body axially embeds portion in described pipe pile body；Described tie hoop is trapped among described
The outer wall of pile tube pile body；The pile crown inwall of described pile tube pile body is provided with polylith along lower joint stake end
Wall is circumferentially arranged steel plate, leaves the breach as pile body groove between adjacent steel plate；Every block of steel
The corresponding pin of plate, the described breach described in pin insertion, described steel plate both sides are upwards
Turnover forms the inverted T shape sliding recess for snapping in pin, the translot two of described sliding recess
End connects with adjacent pile body groove respectively.
2. a kind of concrete tubular pile as claimed in claim 1, it is characterised in that: pin
Head overall diameter is between the vertical slot groove width of sliding recess and the translot groove width of sliding recess.
3. a kind of concrete tubular pile as claimed in claim 1, it is characterised in that: described
The upper joint same basic circle of pile head end face is provided with multiple pins, the wherein bottom of pin and upper joint
Pile head is affixed, and the head of pin points to the upper outside saving stake.
4. a kind of concrete tubular pile as claimed in claim 3, it is characterised in that: described
The upper joint same basic circle of pile head end face is provided with 4 pins, the pile crown end face of described lower joint stake
Inwall is provided with 4 block plates, and every block plate is provided with a sliding recess.
5. a kind of concrete tubular pile as claimed in claim 1, it is characterised in that: described
Lower joint stake and upper joint stake used strength of cement grade are greater than or equal to 42.5, and cement uses slag
Portland cement, portland cement；Fine aggregate uses hard medium sand, and modulus of fineness controls
2.3-3.5；Coarse aggregate uses rubble or cobble, and flat-elongated particles is less than or equal to 5%, maximum grain
Footpath is less than or equal to 23mm.
6. a kind of concrete tubular pile as claimed in claim 1, it is characterised in that: described pre-
Stress reinforcing bar uses tensile strength more than or equal to 1370MPa；Tie hoop uses mild steel hot rolling
Coil rod, concrete product uses cold-drawn low-carbon wire.
7. a kind of concrete tubular pile as described in claim 1～6 any one claim
Construction method, comprises the following steps:
1) measurement and positioning: put axis and each position before construction well, make a call to 1 at Zhuan Wei center
Root bar dowel, and varnish with lacquer and make mark obvious；As at softer field construction, due to stake machine
Walking can squeeze away predetermined bar dowel, therefore stake position to be redeterminated after stake machine is the most in place；
2) pile body is in place, centering, investigation: for pile press machine, by starting vertical and horizontal
Walking oil cylinder, starts piling oil cylinder by 1min in lower joint stake stake pressure people's soil by pile top align piles position
Rear stopping piling, levelling stake is in the perpendicularity of both direction；First segment stake is the most vertical, is to protect
The key of card pile quality；
3) piling: pile holder is tight by clamping oil cylinder, then makes piling oil cylinder stretch journey, by pressure
It is applied in stake；Pressure is reflected by Pressure gauge；A personage is conscientiously recorded deep during piling
Degree and the relation of pressure gauge reading, to judge quality and the bearing capacity of stake；When pressure gauge reading is dashed forward
When so rising or falling, comparison geologic information to be shut down and be analyzed, see and whether run into barrier
Or produce broken pile situation etc.；
4) pile extension: the single-unit length of stake should determine according to appointed condition and construction technology；Work as stake
When the soil layer run through accompanies thin layer sand, an end when determining the length of single-unit stake, should be avoided to be parked in
Carrying out pile extension in sandy soils, joint stake instantly is pressed onto when basseting 0.7～1.0m, just can connect
Joint stake；During pile extension, when after the lower joint recessed grain of stake pile body of upper joint stake sliding pin alignment, pass through
Artificial rotation saves stake so that above joint stake pin makes upper joint stake, lower joint stake by sliding recess
Fixing；After pile extension completes, it is inserted into deformed bar to improve the stability of whole pile body；
5) piling terminates: when pressure gauge reading reaches prespecified value, just can stop piling；
6) repeat above step, complete desired depth pile foundation construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382391.7A CN105887808A (en) | 2016-05-31 | 2016-05-31 | Concrete pipe pile and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382391.7A CN105887808A (en) | 2016-05-31 | 2016-05-31 | Concrete pipe pile and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105887808A true CN105887808A (en) | 2016-08-24 |
Family
ID=56710473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610382391.7A Pending CN105887808A (en) | 2016-05-31 | 2016-05-31 | Concrete pipe pile and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105887808A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330961A (en) * | 2018-02-05 | 2018-07-27 | 苏州研姿材料科技有限公司 | A kind of pile pile facilitating connection |
| CN111795205A (en) * | 2020-07-22 | 2020-10-20 | 武汉市年华管业有限公司 | Concrete pipeline joint strengthening treatment method |
| CN111926801A (en) * | 2020-07-08 | 2020-11-13 | 湖南映晟交通建设工程有限公司 | Sand-free large-hole concrete hollow pipe pile composite foundation treatment construction method |
| CN113653044A (en) * | 2021-08-10 | 2021-11-16 | 大成科创基础建设股份有限公司 | Construction method of deep soft soil pipe pile |
| CN114021209A (en) * | 2022-01-06 | 2022-02-08 | 温州开晨科技有限公司 | Random pile foundation engineering detection and management method and system based on block chain |
| CN114411700A (en) * | 2022-01-13 | 2022-04-29 | 江苏海洋大学 | Steel pile body for steel pipe grouting pile construction while sinking pipe and grouting |
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| CN1480593A (en) * | 2002-09-06 | 2004-03-10 | 西胁醇 | Connection structure of pile |
| CN101255694A (en) * | 2008-04-14 | 2008-09-03 | 河南国基建设集团有限公司 | High-strength prestressed concrete pipe pile construction method |
| WO2015083807A1 (en) * | 2013-12-06 | 2015-06-11 | 新日鐵住金株式会社 | Joint structure for steel pipe pile |
| EP2990535A1 (en) * | 2014-08-29 | 2016-03-02 | Sihga Handels GmbH | Connection fitting for longitudinal connection between pile pieces |
| CN205688432U (en) * | 2016-05-31 | 2016-11-16 | 浙江工业大学 | A kind of concrete tubular pile |
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2016
- 2016-05-31 CN CN201610382391.7A patent/CN105887808A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480593A (en) * | 2002-09-06 | 2004-03-10 | 西胁醇 | Connection structure of pile |
| CN101255694A (en) * | 2008-04-14 | 2008-09-03 | 河南国基建设集团有限公司 | High-strength prestressed concrete pipe pile construction method |
| WO2015083807A1 (en) * | 2013-12-06 | 2015-06-11 | 新日鐵住金株式会社 | Joint structure for steel pipe pile |
| EP2990535A1 (en) * | 2014-08-29 | 2016-03-02 | Sihga Handels GmbH | Connection fitting for longitudinal connection between pile pieces |
| CN205688432U (en) * | 2016-05-31 | 2016-11-16 | 浙江工业大学 | A kind of concrete tubular pile |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330961A (en) * | 2018-02-05 | 2018-07-27 | 苏州研姿材料科技有限公司 | A kind of pile pile facilitating connection |
| CN111926801A (en) * | 2020-07-08 | 2020-11-13 | 湖南映晟交通建设工程有限公司 | Sand-free large-hole concrete hollow pipe pile composite foundation treatment construction method |
| CN111795205A (en) * | 2020-07-22 | 2020-10-20 | 武汉市年华管业有限公司 | Concrete pipeline joint strengthening treatment method |
| CN113653044A (en) * | 2021-08-10 | 2021-11-16 | 大成科创基础建设股份有限公司 | Construction method of deep soft soil pipe pile |
| CN114021209A (en) * | 2022-01-06 | 2022-02-08 | 温州开晨科技有限公司 | Random pile foundation engineering detection and management method and system based on block chain |
| CN114021209B (en) * | 2022-01-06 | 2022-04-22 | 温州开晨科技有限公司 | Random pile foundation engineering detection and management method and system based on block chain |
| CN114411700A (en) * | 2022-01-13 | 2022-04-29 | 江苏海洋大学 | Steel pile body for steel pipe grouting pile construction while sinking pipe and grouting |
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Application publication date: 20160824 |