CN111350181B - Precast concrete tubular pile only bearing anti-pulling effect - Google Patents
Precast concrete tubular pile only bearing anti-pulling effect Download PDFInfo
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- CN111350181B CN111350181B CN202010225049.2A CN202010225049A CN111350181B CN 111350181 B CN111350181 B CN 111350181B CN 202010225049 A CN202010225049 A CN 202010225049A CN 111350181 B CN111350181 B CN 111350181B
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- pile
- guide rod
- tip
- metal
- hollow guide
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 title claims abstract description 9
- 239000004567 concrete Substances 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 41
- 239000002689 soil Substances 0.000 claims abstract description 20
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- 230000008602 contraction Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
-
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/72—Pile shoes
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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)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the field of constructional engineering, and particularly relates to a concrete precast tubular pile only bearing the anti-pulling effect. Only bear precast concrete tubular pile of resistance to plucking effect includes: the concrete prefabricated pile comprises a concrete prefabricated pile body, a detachable hollow guide rod and a metal pile tip, wherein the concrete prefabricated pile body is provided with a pile top and a pile bottom and is driven into foundation soil; the detachable hollow guide rod is arranged in the cavity of the concrete prefabricated pile body, pile tip connecting threads are arranged at the bottom end of the detachable hollow guide rod, guide rod connecting threads are arranged at the top end of the metal pile tip, and the detachable hollow guide rod is in threaded connection with the metal pile tip. The invention has the following beneficial effects: the metal pile tip is arranged on the concrete precast tubular pile tip, so that the sunk pile is penetrated into the soil body and easily penetrates through the hard soil layer, the pile sinking efficiency is improved, and the disturbance to the peripheral soil body is reduced; the pile tip can be recycled, a cavity can be formed between the pile tip and foundation soil, the purpose of saving materials is achieved, the size of the metal pile tip can be customized, and the application range is wide.
Description
Technical Field
The invention belongs to the field of constructional engineering, and particularly relates to a concrete prefabricated pipe pile only bearing the anti-pulling effect.
Background
With the development of social economy, people have higher and higher requirements on residential buildings, and basements have become the conventional configuration of residential buildings at present. For villa projects with low floor numbers, the pressure of the base is low, the villa projects can be transmitted to the foundation in a natural foundation mode, but after the basement is arranged, an anti-floating working condition often exists under a designed high water level, and the scheme of the natural foundation can not meet the use requirement and needs to be changed into a pile foundation. When the conventional pile foundation is designed, the bearing and the anti-floating are both satisfied by the pile foundation. During bearing design, upper load is concentrated on a pile foundation, the upper load borne by a single pile is large, and in order to meet the bearing capacity of the single pile, the pile end needs to be arranged on a good soil layer. During the uplift design, the design requirement can be met only by calculating half of the pile length under the pressure bearing condition due to the small water buoyancy.
For the project mainly bearing pressure and having anti-floating working condition, the conventional pile foundation design is feasible, but the economical efficiency is not good. But only adopts natural foundation, and although the bearing condition can be met and the economy is better, the bearing condition can not be met.
Disclosure of Invention
In view of the use requirements, the invention provides the concrete precast tubular pile only bearing the anti-pulling effect, so that the configuration length of the tubular pile can be determined according to anti-floating calculation according to a natural foundation stress mode under the pressure-bearing working condition of the precast tubular pile raft plate foundation, and the concrete precast tubular pile has better economic benefit.
In order to achieve the purpose, the invention adopts the following scheme:
only bear precast concrete tubular pile of resistance to plucking effect includes: the concrete prefabricated pile comprises a concrete prefabricated pile body, a detachable hollow guide rod and a metal pile tip, wherein the concrete prefabricated pile body is provided with a pile top and a pile bottom and is driven into foundation soil; the detachable hollow guide rod is arranged in the cavity of the concrete prefabricated pile body, the pile tip connecting thread is arranged at the bottom end of the detachable hollow guide rod, the guide rod connecting thread is arranged at the top end of the metal pile tip, and the detachable hollow guide rod is in threaded connection with the metal pile tip.
Preferably, the bottom of the metal pile tip is a cone, the middle part of the metal pile tip is a cylinder, and the upper part of the metal pile tip is a round rod; the middle cylinder of metal stake point sets up the recess that the interior angle is the circular arc, and metal stake point middle part cylinder passes through the fixed axle pin joint can rotate the stake point stopper, and rotatable stake point stopper is middle rectangle both ends semicircular rectangular form, and upper portion is equipped with stake point stopper draw-in groove in its inboard, and the draw-in groove is square notch rectangle.
Preferably, the top of a round rod with a metal pile tip is threaded, the lower portion of the round rod is provided with a diameter contraction section for installing a spring and fixing a clamping ring, the top of the diameter contraction section of the round rod is provided with a clamping ring limiter, the fixing clamping ring is a ring body, the outer ring of the upper portion of the diameter contraction section is provided with a triangular protrusion, and the inner diameter of the diameter contraction section is slightly smaller than the diameter of the spring and is installed above the spring.
Preferably, the pile top stabilizing ring is sleeved at the top of the detachable hollow guide rod, a plurality of limiting holes are formed in the top end of the detachable hollow guide rod, the pile top stabilizing ring is fixed on the detachable guide rod through limiting bolts, and the pile top stabilizing ring is sleeved in the top end of the concrete prefabricated pile body.
Preferably, the concrete precast pile body is a precast concrete hollow pipe pile.
Compared with the prior art, the invention has the following beneficial effects:
1. the metal pile tip is arranged on the concrete precast tubular pile tip, so that the sunk pile is penetrated into the soil body and easily penetrates through the hard soil layer, the pile sinking efficiency is improved, and the disturbance to the peripheral soil body is reduced;
2. the pile tip can be recycled, when the pile tip is stuck, the detachable guide rod is rotated to separate the metal pile tip from other parts, so that the recovery of other parts is realized;
3. a cavity can be formed between the pile tip and the foundation soil, so that the concrete precast tubular pile raft plate foundation bears the load of an upper structure in a stress mode of a natural foundation under a pressure bearing working condition, the designed length of the concrete precast pile can be set only according to the anti-floating requirement, the designed length of the concrete precast pile can be greatly reduced, and the purpose of saving materials is achieved;
4. the size of the metal pile tip can be customized according to the diameter of the concrete precast tubular pile, and the metal pile tip is suitable for various sizes and has a wider application range.
Drawings
Fig. 1 is a schematic structural view of a precast concrete pipe pile which only bears the uplift resistance;
FIG. 2 is a schematic view of a metal stake tip configuration;
in the figure: 1. 2, prefabricating a pile body by using foundation soil and concrete; 11. the detachable hollow guide rod 12 and the pile tip are connected with threads; 13. the pile tip fixing device comprises a rotatable pile tip limiting block, 14, a fixing shaft, 15, a fixing clamp ring, 16, a spring, 17, a clamp ring limiting device, 18, a pile top stabilizing ring, 19, a limiting bolt, 20, a limiting hole, 21, a pile bottom, 22, a pile top, 23, a pile tip limiting block clamping groove, 24 and a metal pile tip.
Detailed Description
As shown in fig. 1 and 2, the precast concrete pipe pile which only bears the pulling-out resistance includes: the concrete prefabricated pile comprises a concrete prefabricated pile body 2, a detachable hollow guide rod 11 and a metal pile tip 24, wherein the concrete prefabricated pile body 2 is a prefabricated concrete hollow pipe pile, the concrete prefabricated pile body 2 is provided with a pile top 22 and a pile bottom 21, and the concrete prefabricated pile body 2 is driven into foundation soil 1; a detachable hollow guide rod 11 is arranged in a cavity of the concrete prefabricated pile body 2, a pile top stabilizing ring 18 is sleeved at the top of the detachable hollow guide rod 11, a plurality of limiting holes 20 are formed in the top end of the detachable hollow guide rod 11, and the pile top stabilizing ring 18 is fixed on the detachable guide rod 11 through a limiting bolt 19; the pile top stabilizing ring 18 is sleeved in the top end of the concrete prefabricated pile body 2; the bottom end of the detachable hollow guide rod 11 is provided with a pile tip connecting thread 12, the top end of the metal pile tip 24 is provided with a guide rod connecting thread, and the detachable hollow guide rod 11 is in threaded connection with the metal pile tip 24.
The bottom of the metal pile tip 24 is a cone, the middle part is a cylinder, and the upper part is a round rod; the middle cylinder of the metal pile tip 24 is provided with a groove with an arc inner angle for mounting the rotatable pile tip limiting block 13. The top of the round rod of the metal pile tip 24 is provided with threads and is used for connecting the detachable hollow guide rod 11; the lower part of the round rod is provided with a diameter contraction section for installing a spring 16 and fixing a snap ring 15, and the top of the diameter contraction section of the round rod is provided with a snap ring limiter 17. The fixed snap ring 15 is a circular ring body, the outer ring of the upper surface of the fixed snap ring is provided with a triangular protrusion, the inner diameter of the fixed snap ring is slightly smaller than the diameter of the spring 16, and the fixed snap ring is arranged above the spring 16. The spring 16 is in a compressed state, so that the fixed snap ring 15 is tightly attached to the snap ring limiter 17, when a downward external force acts on the fixed snap ring 15, the spring 16 is further compressed, and the fixed snap ring 15 can move downwards; the middle cylinder of the metal pile tip 24 is pivoted with the rotatable pile tip limiting block 13 through the fixed shaft 14, the rotatable pile tip limiting block 13 is a strip shape with two semicircular ends and a middle rectangle, the middle upper part of the inner side of the rotatable pile tip limiting block 13 is provided with a pile tip limiting block clamping groove 23, and the clamping groove is a rectangle with a square notch.
When the rotatable pile toe limiting block 13 is opened, the pile bottom 21 can be borne; when rotatable stake point stopper 13 was packed up, stake point stopper draw-in groove 23 extrudees fixed snap ring 15, and fixed snap ring 15 moves down, and spring 16 compresses, and when rotatable stake point stopper 13 was packed up completely, fixed snap ring 15 was detained stake point stopper draw-in groove 23 under the spring-backed effect, accomplished fixedly, and inside 24 accessible concrete precast tubular piles of metal stake point this moment 2. After the fixed clamping ring 15 is pressed and released from the pile tip limiting block clamping groove 23, the pile tip limiting block 13 can be rotated to be opened again.
When in use, the metal pile tip 24 and the detachable guide rod 11 are connected into a whole and penetrate through the concrete precast tubular pile 2; placing the metal pile toe 24 outside the pile bottom 21, opening the rotatable pile toe limiting block 13, and tightly attaching the metal pile toe 24 to the concrete prefabricated pile bottom 21; the pile top stabilizing ring 18 penetrates through the detachable hollow guide rod 11, a proper limiting hole 20 is selected according to the pile length, and the pile top stabilizing ring 18 is fixed on the detachable hollow guide rod 11 through a limiting bolt 19.
When the concrete precast tubular pile 2 is sunk, the metal pile tip 24 is penetrated into the foundation soil 1 along with the concrete precast tubular pile 2, after the pile top 22 of the concrete precast tubular pile 2 reaches the designed elevation, the concrete precast tubular pile 2 stops moving downwards, the limiting bolt 19 is taken down, the pile top stabilizing ring 18 and the detachable hollow guide rod 11 can move relatively, acting force is applied to the detachable hollow guide rod 11 independently to enable the detachable hollow guide rod to move downwards, the metal pile tip 24 also moves downwards along with the detachable hollow guide rod to continue to be penetrated into the foundation soil 1, the rotatable pile tip limiting block 13 is inwards retracted due to extrusion of the peripheral foundation soil 1 until the pile tip limiting block clamping groove 23 is buckled into the fixed clamping ring 15. The detachable hollow guide rod 11 is lifted upwards to the ground, the metal pile tip 24 and the pile top stabilizing ring 18 are taken out along with the detachable hollow guide rod, and the concrete precast pile sinking is completed.
A section of cavity is formed between precast concrete tubular pile 2 and foundation soil 1, and when the load was used for precast concrete pipe raft basis on building upper portion, precast concrete tubular pile 2 born vertical pressure, because the existence of foundation soil cavity, the pile bottom can't provide the end resistance, takes place certain displacement downwards, and the foundation raft is inseparable with the contact of foundation soil, provides the base counter-force for superstructure structure. After the pile tip is used for construction, the prefabricated tubular pile raft foundation can be determined according to anti-floating calculation according to a natural foundation stress mode under a pressure-bearing working condition, and the tubular pile tip has good economic benefits.
Claims (3)
1. A precast concrete pipe pile which can bear only the uplift effect comprises: the concrete prefabricated pile comprises a concrete prefabricated pile body, a detachable hollow guide rod and a metal pile tip, wherein the concrete prefabricated pile body is provided with a pile top and a pile bottom and is driven into foundation soil; a detachable hollow guide rod is arranged in a cavity of the concrete prefabricated pile body, pile tip connecting threads are arranged at the bottom end of the detachable hollow guide rod, guide rod connecting threads are arranged at the top end of the metal pile tip, and the detachable hollow guide rod is in threaded connection with the metal pile tip; the bottom of the metal pile tip is a cone, the middle part is a cylinder, and the upper part is a round rod; the middle cylinder of the metal pile point is provided with a groove with an arc inner angle, the middle cylinder of the metal pile point is pivoted with a rotatable pile point limiting block through a fixed shaft, the rotatable pile point limiting block is a long strip shape with semicircular two ends and a middle rectangle, the middle upper part of the inner side of the rotatable pile point limiting block is provided with a pile point limiting block clamping groove, and the clamping groove is a rectangle with a square notch; the top of the round rod with the metal pile tip is threaded, the diameter contraction section is arranged on the lower portion of the round rod and used for installing a spring and fixing a clamping ring, the clamping ring limiting stopper is arranged on the top of the diameter contraction section of the round rod and is a torus, the outer ring of the clamping ring is triangular and protruding, and the inner diameter of the clamping ring is slightly smaller than the diameter of the spring and is installed above the spring.
2. The precast concrete tubular pile only bearing the pulling-resistant action of claim 1, wherein the top of the detachable hollow guide rod is sleeved with a pile top stabilizing ring, the top of the detachable hollow guide rod is provided with a plurality of limiting holes, the pile top stabilizing ring is fixed on the detachable hollow guide rod through limiting bolts, and the pile top stabilizing ring is sleeved in the top of the precast concrete pile body.
3. The precast concrete tubular pile which only bears the pulling-out resistance as claimed in claim 1, wherein the precast concrete pile body is a precast concrete hollow tubular pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010225049.2A CN111350181B (en) | 2020-03-26 | 2020-03-26 | Precast concrete tubular pile only bearing anti-pulling effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010225049.2A CN111350181B (en) | 2020-03-26 | 2020-03-26 | Precast concrete tubular pile only bearing anti-pulling effect |
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| Publication Number | Publication Date |
|---|---|
| CN111350181A CN111350181A (en) | 2020-06-30 |
| CN111350181B true CN111350181B (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010225049.2A Active CN111350181B (en) | 2020-03-26 | 2020-03-26 | Precast concrete tubular pile only bearing anti-pulling effect |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113969578A (en) * | 2021-12-13 | 2022-01-25 | 广州市番禺大石建筑工程有限公司 | Sectional type foundation pile and construction method thereof |
| CN114517473B (en) * | 2022-02-10 | 2023-03-28 | 江苏开放大学（江苏城市职业学院） | Prefabricated pipe pile capable of effectively enhancing bearing capacity in soft soil stratum and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080107130A (en) * | 2007-06-05 | 2008-12-10 | 장인희 | Reinforced material injected into soil |
| CN102888841A (en) * | 2012-10-25 | 2013-01-23 | 中国地质大学（武汉） | End part thread five-pointed-star-shaped variable-section prefabricated pipe pile and construction method thereof |
| CN204551437U (en) * | 2015-04-17 | 2015-08-12 | 上海三凯建设管理咨询有限公司 | A kind of resistance to plucking Prefabricated hollow pile |
| CN105350531A (en) * | 2015-10-21 | 2016-02-24 | 葛建 | Pipe pile-anchor rod composite foundation capable of bearing pulling and pressing bidirectional loads and construction technology |
| CN107842019A (en) * | 2017-11-22 | 2018-03-27 | 盐城市双强管桩有限公司 | A kind of pulling-resistant and pressure-resistant composite pile |
| CN212104040U (en) * | 2020-03-26 | 2020-12-08 | 上海杰地建筑设计有限公司 | Precast concrete tubular pile only bearing anti-pulling effect |
-
2020
- 2020-03-26 CN CN202010225049.2A patent/CN111350181B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080107130A (en) * | 2007-06-05 | 2008-12-10 | 장인희 | Reinforced material injected into soil |
| CN102888841A (en) * | 2012-10-25 | 2013-01-23 | 中国地质大学（武汉） | End part thread five-pointed-star-shaped variable-section prefabricated pipe pile and construction method thereof |
| CN204551437U (en) * | 2015-04-17 | 2015-08-12 | 上海三凯建设管理咨询有限公司 | A kind of resistance to plucking Prefabricated hollow pile |
| CN105350531A (en) * | 2015-10-21 | 2016-02-24 | 葛建 | Pipe pile-anchor rod composite foundation capable of bearing pulling and pressing bidirectional loads and construction technology |
| CN107842019A (en) * | 2017-11-22 | 2018-03-27 | 盐城市双强管桩有限公司 | A kind of pulling-resistant and pressure-resistant composite pile |
| CN212104040U (en) * | 2020-03-26 | 2020-12-08 | 上海杰地建筑设计有限公司 | Precast concrete tubular pile only bearing anti-pulling effect |
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| CN111350181A (en) | 2020-06-30 |
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