CN114232609B - Anti-floating device for cast-in-place pile reinforcement cage and construction method thereof - Google Patents
Anti-floating device for cast-in-place pile reinforcement cage and construction method thereof Download PDFInfo
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- CN114232609B CN114232609B CN202111498609.2A CN202111498609A CN114232609B CN 114232609 B CN114232609 B CN 114232609B CN 202111498609 A CN202111498609 A CN 202111498609A CN 114232609 B CN114232609 B CN 114232609B
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
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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
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The application provides a bored concrete pile steel reinforcement cage anti-floating device and construction method thereof, the device includes: the diameter of the fixed ring is smaller than the inner diameter of the cast-in-place pile; the circumference of the hollow circular ring can be telescopically adjusted, the hollow circular ring and the fixed circular ring are coaxially arranged, and the hollow circular ring is arranged above the fixed circular ring; one end of each anchor rod is hinged on the fixed circular ring, the middle part of each anchor rod close to the anchor rod is hinged on the hollow circular ring, and the other end of each anchor rod is used for penetrating through the filling pile and inserting into the soil layer; the auxiliary rod is detachably connected to the fixed circular ring and used for extending the fixed circular ring into the filling pile. The auxiliary rod can press the anti-floating device into the bored concrete pile, and the anchor rod of the anti-floating device is inserted into the layer by lifting the auxiliary rod, and the hollow circular ring expands and opens, so that the bored concrete pile is fixed. The anti-floating device is suitable for pile foundation construction with different hole depths, different diameters and different anti-floating requirements, has strong applicability, and has simple structure, low cost, high efficiency and good popularization value.
Description
Technical Field
The invention belongs to the technical field of cast-in-place pile construction, and particularly relates to a cast-in-place pile reinforcement cage anti-floating device and a construction method thereof.
Background
Because of the development of industry, population growth and the perfection requirement of traffic networks, high-rise buildings and bridge engineering are continuously increased, and because the foundation conditions of many cities and different sections are complex, the pressure of the upper structure is difficult to bear, and the bored pile becomes a more common foundation form.
When the bored pile is used for pouring concrete, the concrete starts to rise along the periphery of the hole from the bottom of the pile hole through the long guide pipe, the steel reinforcement cage can float upwards under the action of the impact force or the floating force of the rising of the concrete, and the main reinforcement of the steel reinforcement cage exceeds the designed pile top elevation to generate a series of quality problems. In order to ensure normal construction, the problem of floating of the reinforcement cage is solved.
The more common anti-floating method is as follows: the steel reinforcement cage lifting ring and the steel protection barrel are fixed to provide counter force for the lifting of the steel reinforcement cage; the self weight of the conduit, the pouring platform and the concrete in the hopper during pouring are utilized, and a counterweight is placed on the pouring platform to counteract the upward buoyancy.
The existing reinforcement cage anti-floating structure has the following defects: 1. the gravity and the counterweight are utilized to counteract the complicated construction process of the buoyancy, the device is complex and the efficiency is low, if the operation is incorrect, the reinforcement cage can sink into the soil body at the bottom of the hole under the action of the gravity, and the durability of the cast-in-place pile is reduced; 2. the lifting ring is utilized to provide counter force, and when the lifting ring is subjected to larger buoyancy, the lifting ring is easy to deform, so that the anti-floating effect cannot be achieved.
Disclosure of Invention
In view of the above, the present invention aims to provide a pile cage anti-floating device and a construction method thereof, which solve or overcome at least one technical problem existing in the prior art.
In a first aspect, the present application provides a bored concrete pile reinforcement cage anti-floating apparatus comprising:
the diameter of the fixed circular ring is smaller than the inner diameter of the cast-in-place pile;
the circumference of the hollow ring can be adjusted in a telescopic way, the hollow ring and the fixed ring are coaxially arranged, and the hollow ring is arranged above the fixed ring;
one end of each anchor rod is hinged to the fixed circular ring, the middle part of each anchor rod close to the anchor rod is hinged to the hollow circular ring, and the other end of each anchor rod is used for being inserted into a soil layer through a filling pile;
the auxiliary rod is detachably connected to the fixed circular ring and used for extending the fixed circular ring into the filling pile.
Further, the hollow circular ring is of a ring pipe structure, a first end of the hollow circular ring is sleeved outside the second end, and the second end can be slidably arranged in the first end;
the spring is arranged in the first end, and two ends of the spring are respectively in contact connection with the first end and the second end.
Further, the first end portion is provided with a collar for restricting the second end portion from being removed from the first end.
Further, a threaded sleeve is arranged on the fixed circular ring and is used for being in threaded connection with the auxiliary rod.
Further, the other end of the anchor rod is provided with a pointed end for being inserted into a soil layer.
Further, a plurality of anchor rods are circumferentially connected to the fixed ring and the hollow ring.
Further, at least two first circular rings are arranged on the anchor rod;
a plurality of second circular rings are arranged on the fixed circular ring and the hollow circular ring;
the first circular ring is connected with the second circular ring in a buckling mode.
In a second aspect, the present application provides a method of constructing a pile cage anti-floating device, comprising:
step one, determining the outer diameter sizes of a fixed ring and a hollow ring according to the inner diameter size of a cast-in-place pile;
step two, assembling the cast-in-place pile reinforcement cage anti-floating device;
step three, pressing the filling pile reinforcement cage anti-floating device into a set depth position in the filling pile through an auxiliary rod;
and step four, lifting the auxiliary rods, enabling all anchor rods to be inserted into soil layers, and disassembling the auxiliary rods after fixing the cast-in-place pile reinforcement cage anti-floating device.
Further, a plurality of pile reinforcement cage anti-floating devices can be arranged in the pile.
Further, at least two auxiliary rods are arranged, and the two auxiliary rods are symmetrically arranged on the fixed circular ring.
The beneficial effect that this application had:
according to the anti-floating device of the bored concrete pile reinforcement cage and the construction method thereof, the anti-floating device can be pressed into the bored concrete pile through the auxiliary rod, the anchor rod of the anti-floating device is inserted into the layer through lifting the auxiliary rod, and the hollow circular ring is expanded, so that the bored concrete pile is fixed. The anti-floating device is suitable for pile foundation construction with different hole depths, different diameters and different anti-floating requirements, has strong applicability, adopts a self-anchoring mode to transfer the floating force to a soil layer, improves the complexity and the instability of the traditional construction by using a lifting rib or a gravity type anti-floating structure, and can be used repeatedly by an auxiliary rod, thereby saving the cost. The anti-floating device has the advantages of simple structure, low cost, high efficiency and good popularization value.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a construction method of a cast-in-place pile reinforcement cage anti-floating device according to an embodiment of the invention;
FIG. 2 is a front view showing a simplified structure of a floating-resistant apparatus for a reinforcement cage of a bored concrete pile according to an embodiment of the present invention;
FIG. 3 is a top plan view of a pile cage anti-floating apparatus according to an embodiment of the present invention;
FIG. 4 is a view showing the installation of the floating device for the reinforcement cage of the bored concrete pile according to the embodiment of the present invention;
FIG. 5 is a schematic view of an end connection structure of a hollow ring provided according to an embodiment of the present invention;
fig. 6 is a schematic structural view of an auxiliary rod connected to a fixed ring according to an embodiment of the present invention.
The device comprises a 1-fixed circular ring, a 2-hollow circular ring, a 3-anchor rod, a 4-cast-in-place pile, a 5-soil layer, a 6-auxiliary rod, a 7-hinge point, an 8-spring, a 9-second end, a 10-first end and an 11-threaded sleeve.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts. For clarity, the various features of the drawings are not drawn to scale.
Referring to fig. 2 to 6, in a first aspect, the present application provides a pile cage anti-floating device (simply referred to as "anti-floating device" or "device") comprising: the diameter of the fixed ring 1 is smaller than the inner diameter of the cast-in-place pile 4; the circumference of the hollow ring 2 is telescopically adjustable, the hollow ring 2 and the fixed ring 1 are coaxially arranged, and the hollow ring 2 is arranged above the fixed ring 1; one end of each anchor rod 3 is hinged to the fixed circular ring 1, each anchor rod 3 is hinged to the hollow circular ring 2 near the middle part of the anchor rod, and the other end of each anchor rod 3 is used for being inserted into a soil layer 5 through a cast-in-place pile 4; and the auxiliary rod 6 is detachably connected to the fixed circular ring 1 and is used for extending the fixed circular ring 1 into the cast-in-place pile 4.
The diameter of the fixed ring 1 is smaller than the inner diameter of the bored concrete pile 4, so that the fixed ring 1 can be pressed into the bored concrete pile 4, and the fixed ring 1 supports each anchor rod 3 and bears the stress on the auxiliary rod 6 so as to ensure that the fixed ring enters into the bored concrete pile 4. The articulated connection of each stock 3, when hollow ring 2 expands and opens, the diameter of hollow ring 2 increases for each stock 3 of connecting fixed ring 1 and hollow ring 2 respectively becomes great with the inclination of vertical direction, and stock 3 can stretch out bored concrete pile 4, and then inserts in the soil horizon 5, plays the fixed of bored concrete pile 4.
Referring to fig. 5, in this embodiment, the hollow ring 2 is of a collar structure, a first end 10 of the hollow ring is sleeved outside the second end 9, and the second end 9 can be slidably disposed in the first end 10; a spring 8 is arranged in the first end 10, and two ends of the spring 8 are respectively in contact connection with the ends of the first end 10 and the second end 9. It will be appreciated that the spring 8 is still in compression when the hollow ring 2 is expanded, ensuring that the hollow ring 2 can be expanded.
In an alternative embodiment, the hollow ring 2 may be provided as a plurality of telescopic structures, each telescopic structure being provided with a compression spring 8 therein, and each anchor rod 3 being connected to each telescopic structure.
The first end 10 of each hollow ring 2 is provided with a collar for limiting the escape of the end of the second end 9 from the first end 10. The problem of the hollow circular ring 2 structure is avoided, so that the distribution of the anchor rods 3 is uneven, and the anchor rods 3 received by the filling pile 4 are unevenly fixed.
The fixed ring 1 is provided with a threaded sleeve 11 for being in threaded connection with the auxiliary rod 6. Before the anti-floating device is pressed into the bored concrete pile 4, the auxiliary rod 6 is connected to the threaded sleeve 11, and after the anti-floating device is fixed to the bored concrete pile 4, the auxiliary rod 6 is separated from the threaded sleeve 11 by reversely rotating the auxiliary rod 6, so that the auxiliary rod 6 can be repeatedly used.
The other end of each anchor rod 3 is provided with a pointed end so as to be inserted into the soil layer 5 more effort-saving.
The anchor rods 3 are circumferentially connected to the fixed ring 1 and the hollow ring 2. Three or four circumferentially and uniformly arranged piles are used for ensuring that the piles can be stably fixed in the soil layer 5 and playing an anti-floating role on the cast-in-place piles 4.
At least two first circular rings are arranged on the anchor rod 3; a plurality of second circular rings are arranged on the fixed circular ring 1 and the hollow circular ring 2; the first circular ring is connected with the second circular ring in a buckling mode. Two first rings on each anchor rod 3 are respectively connected with a fixed ring 1 and a second ring on the hollow ring 2, and the first rings and the second rings are used as hinge points 7 to realize hinged connection.
Referring to fig. 1 to 6, in a second aspect, the present application provides a construction method of a pile cage anti-floating device, comprising: step one, determining the outer diameter sizes of a fixed ring 1 and a hollow ring 2 according to the inner diameter size of a cast-in-place pile 4; step two, assembling the cast-in-place pile reinforcement cage anti-floating device; step three, pressing the filling pile reinforcement cage anti-floating device into the filling pile 4 downwards through the auxiliary rod 6 to set depth position; specifically, when the anti-floating device is pressed down through the auxiliary rod 6, the hollow circular ring 2 is compressed, so that each anchor rod 3 is clung to the inner wall of the cast-in-place pile 4, and under the elastic action of the hollow circular ring 2, each anchor rod 3 has an outward Zhou Zhangkai acting force, so that when the device is lifted, the anchor rods 3 can penetrate out of the cast-in-place pile 4 and then are inserted into the soil layer 5. Step four, lifting the auxiliary rods 6, enabling the anchor rods 3 to be inserted into the soil layer 5, and disassembling the auxiliary rods 6 after fixing the cast-in-place pile reinforcement cage anti-floating device, so that the auxiliary rods 6 can be repeatedly used.
In this embodiment, a plurality of pile reinforcement cage anti-floating devices can be provided in the pile 4. So that the pile has enough anti-floating capacity, and the specific number can be randomly set according to the size of the actual cast-in-place pile 4.
In this embodiment, at least two auxiliary rods 6 are provided, and two auxiliary rods 6 are symmetrically provided on the fixed ring 1. Ensures that an even force is applied to the fixed ring 1 when the fixed ring 1 is pressed down and ensures that the fixed ring 1 can stably enter the cast-in-place pile 4.
According to the anti-floating device of the bored concrete pile reinforcement cage and the construction method thereof, the anti-floating device can be pressed into the bored concrete pile 4 through the auxiliary rod 6, the anchor rod 3 of the anti-floating device is inserted into a layer through lifting the auxiliary rod 6, and the hollow circular ring is expanded, so that the bored concrete pile 4 is fixed. The anti-floating device is suitable for pile foundation construction with different hole depths, different diameters and different anti-floating requirements, has strong applicability, adopts a self-anchoring mode to transfer the floating force to the soil layer 5, improves the complexity and the instability of the traditional construction by using a lifting rib or a gravity type anti-floating structure, and can reuse the auxiliary rod 6, thereby saving the cost. The anti-floating device has the advantages of simple structure, low cost, high efficiency and good popularization value.
It should be noted that in this document relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present invention and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (4)
1. An anti-floating device of a bored concrete pile reinforcement cage, which is characterized by comprising:
the diameter of the fixed circular ring is smaller than the inner diameter of the cast-in-place pile;
the circumference of the hollow ring can be adjusted in a telescopic way, the hollow ring and the fixed ring are coaxially arranged, and the hollow ring is arranged above the fixed ring;
one end of each anchor rod is hinged to the fixed circular ring, the middle part of each anchor rod close to the anchor rod is hinged to the hollow circular ring, and the other end of each anchor rod is used for being inserted into a soil layer through a filling pile;
the auxiliary rod is detachably connected to the fixed circular ring and used for extending the fixed circular ring into the filling pile;
the hollow circular ring is of a ring pipe structure, a first end of the hollow circular ring is sleeved outside a second end of the hollow circular ring, and the second end can be slidably arranged in the first end;
a spring is arranged in the first end, and two ends of the spring are respectively in contact connection with the end parts of the first end and the second end;
the first end part is provided with a binding opening for limiting the second end part from falling out of the first end;
the fixed circular ring is provided with a threaded sleeve for being in threaded connection with the auxiliary rod;
the other end of the anchor rod is provided with a pointed end so as to be inserted into a soil layer;
the anchor rods are circumferentially connected to the fixed ring and the hollow ring;
at least two first circular rings are arranged on the anchor rod;
a plurality of second circular rings are arranged on the fixed circular ring and the hollow circular ring;
the first circular ring is connected with the second circular ring in a buckling mode.
2. The construction method of the anti-floating device of the bored concrete pile reinforcement cage is characterized by comprising the following steps:
step one, determining the outer diameter sizes of a fixed ring and a hollow ring according to the inner diameter size of a cast-in-place pile;
assembling the cast-in-place pile reinforcement cage anti-floating device according to claim 1;
step three, pressing the filling pile reinforcement cage anti-floating device into a set depth position in the filling pile through an auxiliary rod;
and step four, lifting the auxiliary rods, enabling all anchor rods to be inserted into soil layers, and disassembling the auxiliary rods after fixing the cast-in-place pile reinforcement cage anti-floating device.
3. A method of constructing a pile cage anti-floating device according to claim 2, wherein a plurality of said pile cage anti-floating devices are provided in said pile.
4. A method of constructing an anti-floating device for a bored pile reinforcement cage according to claim 2, wherein at least two of the auxiliary rods are provided, and the two auxiliary rods are symmetrically provided on the fixed ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111498609.2A CN114232609B (en) | 2021-12-09 | 2021-12-09 | Anti-floating device for cast-in-place pile reinforcement cage and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111498609.2A CN114232609B (en) | 2021-12-09 | 2021-12-09 | Anti-floating device for cast-in-place pile reinforcement cage and construction method thereof |
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| CN114232609A CN114232609A (en) | 2022-03-25 |
| CN114232609B true CN114232609B (en) | 2023-07-18 |
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| CN114703835B (en) * | 2022-05-07 | 2023-06-02 | 中建八局第二建设有限公司 | Detachable device and method for preventing reinforcement cage from floating upwards during concrete pouring |
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| TW200930863A (en) * | 2008-01-15 | 2009-07-16 | Yi-Zhi Lu | Construction method for T-shaped interface connecting case of diaphragm wall and buttress wall or cross wall |
| FR2945606A1 (en) * | 2009-05-18 | 2010-11-19 | Legris Sas | RAPID CONNECTION DEVICE FOR FLUID CIRCUITS SUBJECT TO SIGNIFICANT PRESSURE VARIATIONS. |
| CN103556625B (en) * | 2013-10-27 | 2015-06-03 | 彭桂皎 | Complex squeezed pile forming construction method and complex squeezed pile forming device |
| JP6462468B2 (en) * | 2015-04-15 | 2019-01-30 | 株式会社ミツバ | Electric motor and method for manufacturing electric motor |
| CN205035795U (en) * | 2015-08-19 | 2016-02-17 | 中国建筑第七工程局有限公司 | A anchor head that is used for anti sea anchor pole enlarged footing in underground structure |
| CN106759281B (en) * | 2016-12-26 | 2018-09-07 | 浙江科技学院 | A kind of anchoring preventing cast-in-place concrete pile rising of steel cage is pitched |
| CA2993590A1 (en) * | 2017-09-06 | 2019-03-06 | Xpan Inc. | Radially expandable cannula system |
| CN109356151A (en) * | 2018-11-21 | 2019-02-19 | 江苏景源万河环境科技有限公司 | A kind of variable diameter steel reinforcement cage |
| CN209243719U (en) * | 2018-11-21 | 2019-08-13 | 江苏景源万河环境科技有限公司 | A kind of variable diameter steel reinforcement cage |
| CN110552348B (en) * | 2019-09-04 | 2023-04-07 | 刘晓理 | Pre-retracting type full-working-condition umbrella-shaped body expanding device and using method thereof |
| CN111421343B (en) * | 2020-04-02 | 2022-03-22 | 浙江师范大学 | Supporting device for polishing thin-wall parts |
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