CN111021351A - Pile top plugging construction method for pre-tensioning prestressed concrete pipe pile - Google Patents
Pile top plugging construction method for pre-tensioning prestressed concrete pipe pile Download PDFInfo
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- CN111021351A CN111021351A CN201911359495.6A CN201911359495A CN111021351A CN 111021351 A CN111021351 A CN 111021351A CN 201911359495 A CN201911359495 A CN 201911359495A CN 111021351 A CN111021351 A CN 111021351A
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- prestressed concrete
- concrete pipe
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- pipe pile
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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
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
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- 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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- 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)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a construction method for plugging the pile top of a pretensioned prestressed concrete pipe pile, which comprises the following steps: (1) adopting an enclasping type static pressure pile machine to send the last section of pipe pile to the position where the pile top elevation is 1m higher than the ground; (2) welding four corners of the square steel plate and a flange plate at the pile top of the last section of tubular pile together in a spot welding manner; (3) pile feeding is carried out along the vertical direction until the pile top elevation of the last section of tubular pile is lower than the field ground; (4) repeating the steps (1) to (3) to construct a plurality of prestressed concrete pipe piles; (5) excavating a foundation pit in the outer circumferential direction of each prestressed concrete pipe pile, then cleaning the bottom surface of the foundation pit, and finally pouring a cushion layer on the bottom surface of the foundation pit; (6) and removing the steel plate for plugging, and pouring core filling concrete into the pile core of each prestressed concrete pipe pile. The method is adopted to block the soil body without blocking the pile core.
Description
Technical Field
The invention relates to a pile top plugging construction method, in particular to a pile top plugging construction method of a pretensioned prestressed concrete pipe pile.
Background
The pretensioned prestressed concrete pipe pile is a pile foundation form adopting soil-extruding or semi-soil-extruding, and is a stress rod member which can transfer the load of building into foundation soil and possesses a certain bending-resisting and pressure-resisting property, and the prestressed pipe pile mainly can be used for bearing vertical load. Pile sinking methods for pipe piles are various, and the most used method is static pressure method.
Two sections of pipe piles are adopted for the residence and the construction foundation, and the pile splicing mode adopts welding pile splicing. The pile sinking mode adopts a holding type static pressure pile machine. According to the design requirement, 3500mm deep C35 micro-expansion concrete needs to be poured into the pile core. Considering that the elevation of the pile top of the pile sinking is about 1600-1700mm below the ground level of the site, if the pile hole is directly backfilled and earth excavation is carried out after the static load test is finished, the pile core is inevitably blocked by soil. According to the method, the square steel plate is welded on the pile top, so that the pile core is prevented from being blocked by soil, and a convenient construction environment is provided for core filling construction after earth excavation in the later period.
The Chinese patent with the application number of CN201320251436.9 discloses a connection structure of an end plate and a steel bar of a prestressed concrete tubular pile, which comprises the end plate and the steel bar, wherein the end plate is provided with a bolt hole, and the bolt hole is communicated with a pier head clamping arc groove and a steel bar conical hole with a large upper diameter and a small lower diameter through a groove; the steel bar and the upset head and the conical steel bar clamping part on the steel bar are integrally formed, and the upset head and the conical steel bar clamping part in the steel bar are respectively matched with the upset head clamping arc groove and the steel bar conical hole in the end plate in a matched clamping mode. The patent is not suitable for the condition that the elevation of the pile top is about 1m below the horizon on site, and if the pile hole is directly backfilled and earth excavation is carried out after static load test is finished, the pile core is inevitably blocked by soil.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a construction method for plugging the pile top of a pretensioned prestressed concrete pipe pile, which is low in construction cost, convenient and quick, saves a large amount of labor, time and cost and has high construction efficiency.
A pile top plugging construction method for a pretensioned prestressed concrete pipe pile comprises the following steps:
(1) sequentially driving each section of pipe pile forming a prestressed concrete pipe pile into the ground at a set position in a segmented mode, wherein the bottom surface of the upper section of pipe pile is supported on the pile top of the lower section of pipe pile, and when the last section of pipe pile of the prestressed concrete pipe pile is fed, a holding and pressing type static pressure pile machine is adopted to feed the last section of pipe pile until the elevation of the pile top is 1m higher than the ground;
(2) welding four corners of the square steel plate and a flange plate at the pile top of the last section of tubular pile together by spot welding by using an alternating current welding machine so as to plug the top surface of a pile core of the last section of tubular pile;
(3) after the last section of tubular pile is kept still for 1-2 minutes, clamping the pile end of the last section of tubular pile by the pile feeder, enabling the pile end of the pile feeder to be parallel to the top surface of the last section of tubular pile, and then feeding the pile in the vertical direction until the pile top elevation of the last section of tubular pile is lower than the ground of the site;
(4) repeating the steps (1) to (3) to construct a plurality of prestressed concrete pipe piles;
(5) excavating a foundation pit in the outer circumferential direction of each prestressed concrete pipe pile, then cleaning the bottom surface of the foundation pit, and finally pouring a cushion layer on the bottom surface of the foundation pit;
(6) and (3) removing the steel plate for plugging, inserting the corrugated pipe into 3500mm from the pile top of each prestressed concrete pipe pile to judge whether the pile core of each prestressed concrete pipe pile is plugged, and pouring core filling concrete into the pile core of each prestressed concrete pipe pile if the pile core of each prestressed concrete pipe pile is not plugged.
The design elevation of the prestressed pipe pile is lower than the ground level on site, and the pile needs to be sent to reach the design elevation. After pile sinking is finished, soil needs to be refilled, and the pile core is easy to block by soil, so that the soil in the pile core needs to be removed before the pile core is poured after earthwork excavation. Use the steel sheet to weld in the stake end, can effectually prevent that the soil body from falling into the stake core, and through the actual construction demonstration, in the stake top is below 3500mm also can not crowded to the tubular pile lower extreme soil body, the welding steel sheet can not influence pile sinking construction in addition, and the steel sheet is easily demolishd, also can not influence later stage and waters stake core concrete and stake end welding anchor bar. The plugging soil body can not block the pile core.
Drawings
FIG. 1 is a schematic view of a construction node of a pile top plugging construction method of a pretensioned prestressed concrete pipe pile of the present invention;
Detailed Description
The invention is described in detail below with reference to the following figures and specific examples:
as shown in fig. 1, the construction method for plugging the pile top of the pretensioned prestressed concrete pipe pile comprises the following steps:
(1) sequentially driving each section of pipe pile forming a prestressed concrete pipe pile 2 into the ground at a set position in a segmented mode, wherein the bottom surface of the upper section of pipe pile is supported on the pile top of the lower section of pipe pile, and when the last section of pipe pile of the prestressed concrete pipe pile 2 is fed, a holding and pressing type static pressure pile machine is adopted to feed the last section of pipe pile until the elevation of the pile top is 1m higher than the ground;
(2) welding four corners of the square steel plate 1 and a flange plate at the pile top of the last section of tubular pile together by spot welding by using an alternating current welding machine so as to plug the top surface of a pile core 3 of the last section of tubular pile;
(3) after the last section of tubular pile is kept still for 1-2 minutes, clamping the pile end of the last section of tubular pile by the pile feeder, enabling the pile end of the pile feeder to be parallel to the top surface of the last section of tubular pile, and then feeding the pile in the vertical direction until the pile top elevation of the last section of tubular pile is lower than the ground of the site;
(4) repeating the steps (1) to (3) to construct a plurality of prestressed concrete pipe piles;
(5) excavating a foundation pit in the outer circumferential direction of each prestressed concrete pipe pile 2, then cleaning the bottom surface of the foundation pit, and finally pouring a cushion layer on the bottom surface of the foundation pit, so that a pile body and an original soil body can be prevented from being mechanically disturbed;
(6) and (3) removing the steel plate 1 for plugging, inserting the corrugated pipe into 3500mm from the pile top of each prestressed concrete tubular pile to judge whether the pile core 3 of each prestressed concrete tubular pile is plugged, and pouring core filling concrete into the pile core 3 of each prestressed concrete tubular pile if the pile core 3 of each prestressed concrete tubular pile is not plugged.
Claims (1)
1. A pile top plugging construction method for a pretensioned prestressed concrete pipe pile is characterized by comprising the following steps:
(1) sequentially driving each section of pipe pile forming a prestressed concrete pipe pile into the ground at a set position in a segmented mode, wherein the bottom surface of the upper section of pipe pile is supported on the pile top of the lower section of pipe pile, and when the last section of pipe pile of the prestressed concrete pipe pile is fed, a holding and pressing type static pressure pile machine is adopted to feed the last section of pipe pile until the elevation of the pile top is 1m higher than the ground;
(2) welding four corners of the square steel plate and a flange plate at the pile top of the last section of tubular pile together by spot welding by using an alternating current welding machine so as to plug the top surface of a pile core of the last section of tubular pile;
(3) after the last section of tubular pile is kept still for 1-2 minutes, clamping the pile end of the last section of tubular pile by the pile feeder, enabling the pile end of the pile feeder to be parallel to the top surface of the last section of tubular pile, and then feeding the pile in the vertical direction until the pile top elevation of the last section of tubular pile is lower than the ground of the site;
(4) repeating the steps (1) to (3) to construct a plurality of prestressed concrete pipe piles;
(5) excavating a foundation pit in the outer circumferential direction of each prestressed concrete pipe pile, then cleaning the bottom surface of the foundation pit, and finally pouring a cushion layer on the bottom surface of the foundation pit;
(6) and (3) removing the steel plate for plugging, inserting the corrugated pipe into 3500mm from the pile top of each prestressed concrete pipe pile to judge whether the pile core of each prestressed concrete pipe pile is plugged, and pouring core filling concrete into the pile core of each prestressed concrete pipe pile if the pile core of each prestressed concrete pipe pile is not plugged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911359495.6A CN111021351A (en) | 2019-12-25 | 2019-12-25 | Pile top plugging construction method for pre-tensioning prestressed concrete pipe pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911359495.6A CN111021351A (en) | 2019-12-25 | 2019-12-25 | Pile top plugging construction method for pre-tensioning prestressed concrete pipe pile |
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| CN111021351A true CN111021351A (en) | 2020-04-17 |
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| CN201911359495.6A Pending CN111021351A (en) | 2019-12-25 | 2019-12-25 | Pile top plugging construction method for pre-tensioning prestressed concrete pipe pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324035A (en) * | 2022-09-01 | 2022-11-11 | 中国十七冶集团有限公司 | Prestressed pipe pile foundation and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5558314B2 (en) * | 2010-11-04 | 2014-07-23 | 株式会社テノックス九州 | Construction method of soil cement composite pile |
| CN205712089U (en) * | 2016-04-22 | 2016-11-23 | 江苏兴厦建设工程集团有限公司 | A kind of pre-stress hollow square pile |
| CN109518699A (en) * | 2019-01-23 | 2019-03-26 | 广州地铁集团有限公司 | Miniature steel pipe pile adds grid spray anchor deep foundation ditch combination supporting scheme system and its construction method |
| CN109723077A (en) * | 2017-10-31 | 2019-05-07 | 中国二十冶集团有限公司 | Prevent the method that pile for prestressed pipe stake core bore blocks when bearing platform construction |
| CN109837891A (en) * | 2019-03-25 | 2019-06-04 | 闫相明 | A kind of tubular pole filling core construction |
| CN109868820A (en) * | 2019-04-08 | 2019-06-11 | 王磊 | A kind of construction method |
| CN109898511A (en) * | 2019-04-08 | 2019-06-18 | 王磊 | A kind of construction method of static pressed pile and its dedicated Static pressure pile driver |
-
2019
- 2019-12-25 CN CN201911359495.6A patent/CN111021351A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5558314B2 (en) * | 2010-11-04 | 2014-07-23 | 株式会社テノックス九州 | Construction method of soil cement composite pile |
| CN205712089U (en) * | 2016-04-22 | 2016-11-23 | 江苏兴厦建设工程集团有限公司 | A kind of pre-stress hollow square pile |
| CN109723077A (en) * | 2017-10-31 | 2019-05-07 | 中国二十冶集团有限公司 | Prevent the method that pile for prestressed pipe stake core bore blocks when bearing platform construction |
| CN109518699A (en) * | 2019-01-23 | 2019-03-26 | 广州地铁集团有限公司 | Miniature steel pipe pile adds grid spray anchor deep foundation ditch combination supporting scheme system and its construction method |
| CN109837891A (en) * | 2019-03-25 | 2019-06-04 | 闫相明 | A kind of tubular pole filling core construction |
| CN109868820A (en) * | 2019-04-08 | 2019-06-11 | 王磊 | A kind of construction method |
| CN109898511A (en) * | 2019-04-08 | 2019-06-18 | 王磊 | A kind of construction method of static pressed pile and its dedicated Static pressure pile driver |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324035A (en) * | 2022-09-01 | 2022-11-11 | 中国十七冶集团有限公司 | Prestressed pipe pile foundation and construction method thereof |
| CN115324035B (en) * | 2022-09-01 | 2024-05-17 | 中国十七冶集团有限公司 | Prestressed pipe pile foundation and construction method thereof |
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