CN106638574A - Anchoring ball for preventing bored concrete pile reinforcement cage from floating - Google Patents
Anchoring ball for preventing bored concrete pile reinforcement cage from floating Download PDFInfo
- Publication number
- CN106638574A CN106638574A CN201611043454.2A CN201611043454A CN106638574A CN 106638574 A CN106638574 A CN 106638574A CN 201611043454 A CN201611043454 A CN 201611043454A CN 106638574 A CN106638574 A CN 106638574A
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- CN
- China
- Prior art keywords
- ball
- anchoring
- reinforcement cage
- stake holes
- cage
- 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.)
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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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
Abstract
An anchoring ball for preventing a bored concrete pile reinforcement cage from floating is a flat spherical (rugby-shaped) or spherical anchoring ball 1 and is mounted at the bottom of the bored concrete pile reinforcement cage. The anchoring ball consists of common reinforcements, and has the maximum circumferential diameter larger than the diameter of the reinforcement cage but slightly smaller than the internal diameter of a pile hole. The anchoring ball can anchor the bottom of the reinforcement cage onto the rock-soil mass of a pile foundation on one hand, on the other hand, can balance the recoil force of concrete, and therefore, radically solves the problem that the reinforcement cage floats upwards in the construction process of the bored concrete pile.
Description
Technical field
The present invention relates to the anchor in filling concrete field.
Background technology
Cast-in-place concrete pile is a kind of pile foundation being widely used in civil engineering, by steel reinforcement cage and cast-in-place concrete group
Into as shown in figure 1, its work progress mainly has three steps：(a) drilling → (b) placement steel reinforcement cage → (c) concrete perfusions →
(d) pile.
During concrete perfusion, concrete 1 along the injection stake holes of conduit 2 bottom of insertion stake holes bottom, to it is lower and on
Fill stake holes.Concrete 1 is rushed at downwards after stake holes bottom rock-soil body 5 with higher speed along conduit, and concrete 3 rebounds upwards simultaneously
There are sharp impacts and extruding with prepositioned steel reinforcement cage 4, whole process is as shown in Figure 2.In this process, rebound upwards
Concrete steel reinforcement cage can be driven to float upwards together.At the initial stage of perfusion, because the deadweight of steel reinforcement cage 4 is not enough to balance coagulation
Buoyancy produced by soil bounce-back, steel reinforcement cage 4 can be moved up, and cause cast-in-place concrete pile lower rebar to lack, to pile matter
Amount produces harmful effect, and the buried depth of pile foundation is bigger, and the floating of steel reinforcement cage is more serious, and the harmful effect to pile quality is tighter
Weight.
In order to prevent rising of steel cage, it is anti-to balance concrete that unit in charge of construction typically can place weight on the top of steel reinforcement cage
Buoyancy produced by punching, but this method can not exactly estimate the weight of weight, when weight is less than buoyancy, steel
Muscle cage still floats, and can't resolve problem；When weight is more than buoyancy, particularly when pile foundation exceedes certain depth, on top
Under the collective effect of the powerful recoil strength in the pressure of portion's weight and bottom, the longitudinal reinforcement in steel reinforcement cage can produce flexing, seriously
Affect pile quality.
The content of the invention
The problems referred to above occurred during in order to solve Concrete Grouting Pale, the present invention proposes one kind can be by steel
The device of muscle cage and stake holes bottom rock-soil body anchoring, the device on the one hand can by the bottom anchor of steel reinforcement cage pile foundation ground
On body, the recoil strength of concrete can on the other hand mutually balanced, fundamentally solve steel concrete bored concrete pile and constructing
Muscle cage On The Floating in journey.
Technical solution of the present invention：
A kind of anchor that steel reinforcement cage can be fixed on stake holes bottom, the anchor is oblate spheroid (rugby shape)
Or spheroidal anchoring ball 1, installed in the bottom of filling concrete pile cages 2.Anchoring ball 1 is made up of regular reinforcement, and it is most
Big circumference is slightly less than the internal diameter of stake holes 3 with diameter greater than steel reinforcement cage diameter.
After the steel reinforcement cage for being provided with anchor is placed on the stake holes of cast-in-place concrete pile, anchoring ball is in upper reinforcement cage
Deadweight and stake holes bottom Rock And Soil collective effect under produce vertical compression, while can also produce horizontal direction
Dilatancy, will produce mutually extruding between anchoring ball and stake holes side wall 4, so as to steel reinforcement cage to be anchored at the bottom of stake holes, prevent
Only steel reinforcement cage floats in the presence of concrete recoil strength.
After anchoring ball 1 is installed in the bottom of steel reinforcement cage, top of the concrete 6 not only to anchoring ball 1 produces downward work
Firmly so that anchoring ball 1 produces secondary transversely deforming, and between the wall of stake holes side bigger extruding force, steel reinforcement cage and ground are produced
Anchoring between body is more firm, while restriction steel can be played with the buoyancy produced by partial offset concrete recoil 7
The effect of muscle cage buoyancy.
The outward appearance maximum gauge of anchoring ball 1 should be equal or close to the diameter of stake holes 3.
The steel bar arrangement scheme of anchoring ball 1 is to arrange that wherein most is to arrange along warp 8 along Jing, parallel, in anchoring ball
In the stake holes diameter range on top, along parallel the less reinforcing bar 10 of some diameters is arranged, can produce when concrete is poured compared with
Big downward active force, the space between warp reinforcing bar and parallel reinforcing bar cannot be less than the maximum gauge of concrete coarse aggregate.
Parallel reinforcing bar must not be set in anchoring ball bottom, it is to avoid affect floating and the cleaning of pile foundation bottom debris.
Anchoring ball 1 is welded to connect by parallel reinforcing bar 9 with filling pile cage of reinforcement 2.
The bar diameter of anchoring ball 1 needs straight according to the buried depth of cast-in-place concrete pile and the steel reinforcement cage of cast-in-place concrete pile
The conditions such as footpath, stake holes diameter determine.
The advantages of the present invention are as follows：
1st, principle is anchored simple：Under the deadweight of steel reinforcement cage and the collective effect of stake holes bottom rock-soil body, anchoring ball is produced
Transversely deforming, produces with the Rock And Soil of stake holes side wall and compresses and rubs against power, so as to steel reinforcement cage is fixed on into stake holes bottom, Ke Yiyou
Prevent steel reinforcement cage from floating during concrete perfusion to effect, it is to avoid because rising of steel cage causes bad stake and useless stake, particularly pin
It is more efficient to the stake of long depth and overlength depth stake, greatly improve the construction quality of cast-in-place concrete pile.
2nd, the making for anchoring ball is simple, and expense is few, with very high economic benefit.
3rd, manual intervention, high degree of automation is not needed not to have a negative impact to pile quality in work progress.
Description of the drawings
The pile foundation being applied in Fig. 1 prior arts in civil engineering
Fig. 2 rising of steel cage mechanism schematic diagrams
Fig. 3 anchors the anchor mechanism schematic diagram of ball
Fig. 4 anchors the anti-floating mechanism schematic diagram of ball
Fig. 5 anchors the organigram of ball
Connection diagram between Fig. 6 steel reinforcement cages and anchoring ball
Fig. 7 anchors the composition of ball
Numeral mark
1-filling concrete pile cages, 2-anchoring ball steel reinforcement cage, 3-stake holes, 4-stake holes hole wall, 8-warp steel
Muscle, 9,10-parallel reinforcing bar
Specific embodiment
The present invention proposes a kind of anchor that steel reinforcement cage can be fixed on stake holes bottom, shown in such as Fig. 3 (a).The anchor
It is fixedly mounted with and is set to oblate spheroid (rugby shape) or spheroidal anchoring ball 1, installed in the bottom of filling concrete pile cages 2.Anchor
Gu ball 1 is made up of regular reinforcement, its largest circumference is slightly less than the internal diameter of stake holes 3 with diameter greater than steel reinforcement cage diameter.
The anti-lift function of anchor of the present invention has following two aspects：
1st, anchorage effect：After the steel reinforcement cage for being provided with anchor is placed on the stake holes of cast-in-place concrete pile, ball is anchored
Vertical compression is produced under the collective effect of the Rock And Soil of the deadweight and stake holes bottom of upper reinforcement cage, while also can produce
The dilatancy of raw horizontal direction, will produce mutually extruding, such as Fig. 3 (b) and Fig. 3 (c) institutes between anchoring ball and stake holes side wall 4
Show.So as to steel reinforcement cage to be anchored at the bottom of stake holes, prevent steel reinforcement cage from floating in the presence of concrete recoil strength.
2nd, concrete rebound effect is offset：Traditional steel reinforcement cage bottom does not have reinforcing bar, and its floating mechanism is as shown in Figure 2.
After anchoring ball 1 is installed in the bottom of steel reinforcement cage, as shown in figure 4, is produced from top of the concrete 6 not only to anchoring ball 1
The downward active force of life so that anchoring ball 1 produces secondary transversely deforming, and between the wall of stake holes side bigger extruding force, steel are produced
Anchoring between muscle cage and Rock And Soil is more firm, while can be with the buoyancy produced by partial offset concrete recoil 7, can
Play a part of to limit rising of steel cage power.
Key technology point of the present invention is to propose the anchoring ball that can deform, and is one concrete according to cast-in-place concrete pile
Buried depth and stake holes and pile foundation condition, through design-calculated is spherical or oblate spheroid steel reinforcement cage, it is constituted as shown in Figure 5 substantially.
The outward appearance maximum gauge of anchoring ball 1 should be equal or close to the diameter of stake holes 3.
The steel bar arrangement scheme of anchoring ball 1 is to arrange that wherein most is to arrange along warp 8 along Jing, parallel, in anchoring ball
In the stake holes diameter range on top, along parallel the less reinforcing bar 10 of some diameters is arranged, can produce when concrete is poured compared with
Big downward active force, the space between warp reinforcing bar and parallel reinforcing bar cannot be less than the maximum gauge of concrete coarse aggregate.
Parallel reinforcing bar must not be set in anchoring ball bottom, it is to avoid affect floating and the cleaning of pile foundation bottom debris.
Anchoring ball 1 is welded to connect by parallel reinforcing bar 9 with filling pile cage of reinforcement 2.
The bar diameter of anchoring ball 1 needs straight according to the buried depth of cast-in-place concrete pile and the steel reinforcement cage of cast-in-place concrete pile
The conditions such as footpath, stake holes diameter determine.
Shown in Fig. 6, Fig. 7.
Embodiment 1：Oblate spheroid (rugby shape) scheme
Be relatively large in diameter when stake holes, under conditions of pile foundation buried depth relatively depth, using oblate spheroid (rugby shape) technical scheme, favorably
In putting for control bored concrete pile pile body steel reinforcement cage, while being conducive to anchoring ball generation transversely deforming.
Embodiment 2：Spheroidal scheme
When stake holes diameter is less, pile foundation buried depth earlier above under conditions of, using spheroidal technical scheme, make simple, construction
It is convenient.
Claims (4)
1. a kind of anchoring ball for preventing cast-in-place concrete pile rising of steel cage, it is characterised in that the anchor is oblate spheroid (olive
Rugby ball shape) or spheroidal anchoring ball (1), installed in the bottom of filling concrete pile cages (2)；The anchoring largest circumference of ball 1
With diameter greater than steel reinforcement cage diameter, less than the internal diameter of stake holes (3)；
When the steel reinforcement cage for being provided with anchor is placed on the stake holes of cast-in-place concrete pile after, anchor ball upper reinforcement cage from
Vertical compression is produced under the collective effect of the Rock And Soil of weight and stake holes bottom, while can also produce the expansion of horizontal direction
Deformation, will produce mutually extruding between anchoring ball and stake holes side wall (4), so as to steel reinforcement cage to be anchored at the bottom of stake holes, prevent
Steel reinforcement cage floats in the presence of concrete recoil strength；
After anchoring ball (1) is installed in the bottom of steel reinforcement cage, top of the concrete (6) not only to anchoring ball (1) produces downward
Active force so that anchoring ball (1) produces secondary transversely deforming, produces bigger extruding force between the wall of stake holes side, steel reinforcement cage with
Anchoring between Rock And Soil is more firm, while the buoyancy that can be recoiled produced by (7) with partial offset concrete, can play
Limit the effect of rising of steel cage power.
2. the anchoring ball of cast-in-place concrete pile rising of steel cage is prevented as claimed in claim 1, it is characterised in that anchoring ball
(1) outward appearance maximum gauge should be equal or close to the diameter of stake holes (3).
3. the anchoring ball of cast-in-place concrete pile rising of steel cage is prevented as claimed in claim 1, it is characterised in that anchoring ball
(1) steel bar arrangement scheme is to arrange along Jing, parallel, and wherein most is along warp (8) arrangement, in the stake holes on anchoring ball top
In diameter range, the less reinforcing bar of some diameters (10) are arranged along parallel, can be produced when concrete is poured larger downward
Active force, the space between warp reinforcing bar and parallel reinforcing bar cannot be less than the maximum gauge of concrete coarse aggregate.
4. the anchoring ball of cast-in-place concrete pile rising of steel cage is prevented as claimed in claim 1, it is characterised in that anchoring ball
(1) it is welded to connect with filling pile cage of reinforcement (2) by parallel reinforcing bar (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043454.2A CN106638574B (en) | 2016-11-21 | 2016-11-21 | A kind of anchoring ball preventing cast-in-place concrete pile rising of steel cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043454.2A CN106638574B (en) | 2016-11-21 | 2016-11-21 | A kind of anchoring ball preventing cast-in-place concrete pile rising of steel cage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106638574A true CN106638574A (en) | 2017-05-10 |
| CN106638574B CN106638574B (en) | 2018-10-30 |
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ID=58811353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611043454.2A Expired - Fee Related CN106638574B (en) | 2016-11-21 | 2016-11-21 | A kind of anchoring ball preventing cast-in-place concrete pile rising of steel cage |
Country Status (1)
| Country | Link |
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| CN (1) | CN106638574B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115679A (en) * | 2018-09-28 | 2019-01-01 | 浙江科技学院 | The test method of interaction force between fresh concrete and steel reinforcement cage |
| CN113404039A (en) * | 2021-05-26 | 2021-09-17 | 山东高速工程建设集团有限公司 | Construction method for improving bearing capacity of cast-in-place pile |
| CN113931174A (en) * | 2021-10-22 | 2022-01-14 | 中铁隧道集团二处有限公司 | Anti-pulling and grabbing lock device suitable for bedrock full-rotation sleeve pipe pile-forming reinforcement cage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2522467Y (en) * | 2002-01-25 | 2002-11-27 | 上海世圳岩土工程有限公司 | Cement mud agitating pile |
| CN1439777A (en) * | 2002-02-19 | 2003-09-03 | 上海世圳岩土工程有限公司 | Cement stirring pole and production thereof |
| CN203361137U (en) * | 2013-07-17 | 2013-12-25 | 中建四局第一建筑工程有限公司 | Steel reinforcing cage anti-floating device of large-diameter drill hole cast-in-place pile |
| JP5412501B2 (en) * | 2011-12-09 | 2014-02-12 | 株式会社泉州イワタニ | Reinforcement rod erection method, buoyancy imparting device used in the method, and buoyancy body detachment device |
| CN204959733U (en) * | 2015-09-10 | 2016-01-13 | 深圳市工勘岩土技术有限公司 | Bored concrete pile steel reinforcement cage structure |
-
2016
- 2016-11-21 CN CN201611043454.2A patent/CN106638574B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2522467Y (en) * | 2002-01-25 | 2002-11-27 | 上海世圳岩土工程有限公司 | Cement mud agitating pile |
| CN1439777A (en) * | 2002-02-19 | 2003-09-03 | 上海世圳岩土工程有限公司 | Cement stirring pole and production thereof |
| JP5412501B2 (en) * | 2011-12-09 | 2014-02-12 | 株式会社泉州イワタニ | Reinforcement rod erection method, buoyancy imparting device used in the method, and buoyancy body detachment device |
| CN203361137U (en) * | 2013-07-17 | 2013-12-25 | 中建四局第一建筑工程有限公司 | Steel reinforcing cage anti-floating device of large-diameter drill hole cast-in-place pile |
| CN204959733U (en) * | 2015-09-10 | 2016-01-13 | 深圳市工勘岩土技术有限公司 | Bored concrete pile steel reinforcement cage structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115679A (en) * | 2018-09-28 | 2019-01-01 | 浙江科技学院 | The test method of interaction force between fresh concrete and steel reinforcement cage |
| CN113404039A (en) * | 2021-05-26 | 2021-09-17 | 山东高速工程建设集团有限公司 | Construction method for improving bearing capacity of cast-in-place pile |
| CN113404039B (en) * | 2021-05-26 | 2022-09-09 | 山东高速工程建设集团有限公司 | Construction method for improving bearing capacity of cast-in-place pile |
| CN113931174A (en) * | 2021-10-22 | 2022-01-14 | 中铁隧道集团二处有限公司 | Anti-pulling and grabbing lock device suitable for bedrock full-rotation sleeve pipe pile-forming reinforcement cage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106638574B (en) | 2018-10-30 |
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