CN114922163A - Anti-floating construction process for steel reinforcement cage of drilled secant pile - Google Patents
Anti-floating construction process for steel reinforcement cage of drilled secant pile Download PDFInfo
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- CN114922163A CN114922163A CN202210374150.3A CN202210374150A CN114922163A CN 114922163 A CN114922163 A CN 114922163A CN 202210374150 A CN202210374150 A CN 202210374150A CN 114922163 A CN114922163 A CN 114922163A
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 238000010276 construction Methods 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 239000004567 concrete Substances 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 6
- 210000003205 muscle Anatomy 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000011295 pitch Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
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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
- 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
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
Abstract
The invention relates to an anti-floating construction process for a steel reinforcement cage of a bored secant pile, which comprises the following steps: s1, assembling the reinforcement cage; s2, hoisting the reinforcement cage; and S3, pouring concrete. On one hand, the reinforcing cage is subjected to bottom sealing, so that concrete cannot be wound to the bottom of the reinforcing cage in a large amount during pouring, and meanwhile, the end-sealing template bears the downward-falling force of the concrete and presses down the reinforcing cage, so that the reinforcing cage is always in a downward-pulling state in the pouring process, the common problem that the reinforcing cage floats upwards in the construction process of the traditional process is effectively solved, and the control on the quality of the whole pile body is enhanced; on the other hand, through the arrangement of the cage bottom cavity, the probability of empty piles or broken piles in pile grouting construction is reduced.
Description
Technical Field
The invention belongs to the technical field of pile grouting construction, and particularly relates to an anti-floating construction process for a steel reinforcement cage of a drilled secant pile.
Background
As is well known, the drilled secant pile adopts mechanical drilling construction, and the piles are mutually arranged in a meshed manner to form a foundation pit enclosure structure. The construction mainly adopts the scheme of casing drilling machine and super retarding concrete. The arrangement mode of the drilling secant pile adopts: the first-order pile plain concrete pile (pile A) and the second-order reinforced concrete pile (pile B) are spaced; the construction method comprises the following steps of constructing the pile A firstly and constructing the pile B secondly, wherein the concrete of the pile A adopts super-retarding concrete, the construction of the pile B is required to be completed before the initial setting of the concrete of the pile A, and when the pile B is constructed, the cutting capability of a casing drilling machine is utilized to cut off part of the concrete of the adjacent pile A, so that the occlusion is realized.
However, in the pile grouting process, a reinforcement cage is required to be adopted, the conventional reinforcement cage mainly comprises main reinforcements and stirrups, wherein the main reinforcements extend along the length direction of the pile, the stirrups fixedly connect a plurality of main reinforcements, then the reinforcement cage is hoisted to corresponding pile holes, and the required pile foundation is formed by performing concrete pouring on the drilled secant pile The influence factors such as the whole light weight of the steel reinforcement cage, the large pouring impact force and the like can increase the probability of empty piles or broken piles in the poured piles, and the quality of the poured pile construction is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a novel anti-floating construction process for a steel reinforcement cage of a bored secant pile.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the anti-floating construction process of the steel reinforcement cage of the bored secant pile is characterized in that: which comprises the following steps:
s1 assembling reinforcement cage
Firstly, a hoop reinforcement and a main reinforcement are oppositely welded to form a cylindrical cage body, wherein two end parts of the cage body are respectively a top end and a bottom end; secondly, installing a sealing end template in an inner cavity at the bottom end of the cage body, wherein the outer contour shape of the sealing end template is the same as the radial section of the inner cavity of the cage body, the sealing end template is blocked in the cage body, and meanwhile, the sealing end template and the end part of a main rib protruded from the bottom end of the cage body form a bottom cavity of the cage;
s2 hoisting reinforcement cage
Firstly, hoisting a reinforcement cage from the top end of a cage body by using a crane; secondly, aligning the center of the reinforcement cage with the center of the pile hole; finally, gradually sinking, and erecting the bottom ends of the autonomous ribs of the cage bottom cavity on the pile hole base surface;
s3, pouring concrete
During pouring, the concrete firstly falls into an end inner cavity formed by the cage body and the end-sealing template, then flows and diffuses outwards and towards the bottom cage bottom cavity, the concrete surface rises after the cage bottom cavity is filled, and the concrete in the inner cavity keeps the movement trend of pressing the cage body downwards, so that the anti-floating pouring of the reinforcement cage in the poured pile is completed.
Preferably, in S1, the main bars forming the cage body are evenly distributed around the circumference at intervals, the stirrups are fixedly connected with the inner sides of the main bars, and the top and the side of the bottom cavity of the cage are respectively formed with a pouring channel, wherein the flow rates of the pouring channels flowing into the bottom cavity of the cage from the top and the side are Q1 and Q2, and Q1 is greater than or equal to Q2. The flow control is adopted, the cage body is prevented from being arched due to the flowing of concrete in the pouring process, and the upward buoyancy of the end-sealed template can be effectively reduced.
According to a specific implementation and preferred aspect of the invention, the pouring channel comprises a first channel and a second channel, wherein the first channel comprises a plurality of branch holes distributed on the end-capped die plate, each two adjacent main reinforcement ends and a notch formed by the end-capped die plate, and the plurality of notches form the second channel. Concrete flows into the cage bottom cavity at the bottom sequentially or synchronously through the pouring channel, so that the probability of empty piles or broken piles is avoided, and the pile pouring quality is improved.
Preferably, the aperture of each notch is equal to and larger than the maximum particle size of the aggregate in the building concrete. This ensures that the strength of the cast concrete is relatively uniform.
Further, the diffluence hole is including being located the first through-hole in end-capping template middle part, round first through-hole is a plurality of second through-holes that the annular array distributes, and the equal top surface of first through-hole and second through-hole is to the aperture grow setting gradually that the bottom surface formed. The design of the through hole has the main advantages that: 1. guiding the flow direction of the concrete; 2. the decomposed part is floating.
According to another embodiment and preferred aspect of the present invention, the bottom of the cage in S1 is further provided with a reinforcement stirrup supported at the bottom of the end-capping mold plate, and the reinforcement stirrup is fixedly welded to the inner side of the main rib. The strength is improved, the reinforcement cage is prevented from being scattered in pouring, and meanwhile, the impact resistance of the end-sealed template is improved.
Preferably, a helical stirrup is fixedly welded to the periphery of the cage in S1, wherein the helical stirrup is spirally wound outside the main rib along the length direction of the cage. The function of the spiral stirrup is as follows: 1. further reduce the net of cage body periphery, the concrete concentrates the pile more easily in the inner chamber that end-capping template and cage body formed like this and improves the holding down force that the steel reinforcement cage received when pouring, and then avoids the come-up.
In addition, the screw pitches of the spiral stirrups are equal, and the length of a welding seam formed by welding the spiral stirrups with each main rib is 5-10 times of the outer diameter of each main rib. Ensure the firmness of the cage body like this, avoid appearing if the welding straightness that hangs down is not good, influence transferring of steel reinforcement cage.
Preferably, before S2, remove the earth and the oil stain of adhesion on the cage body surface, and the lug that the steel reinforcement cage was lifted by crane adopts round steel preparation and with corresponding main muscle welding. Set up like this, the abundant combination of the steel reinforcement cage of being convenient for and concrete also improves the security of steel reinforcement cage hoist and mount simultaneously, also makes things convenient for the counterpoint to adjust.
Specifically, the end-capped die plate is a steel plate.
Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:
on one hand, the reinforcement cage is subjected to bottom sealing, so that concrete cannot be wound to the bottom of the reinforcement cage in a large amount during pouring, and meanwhile, the end-sealing template bears the downward-punching force of the concrete and presses down the reinforcement cage, so that the reinforcement cage is always in a downward-pulling state during pouring, the common problem that the reinforcement cage floats upwards during construction in the traditional process is effectively solved, and the control on the quality of the whole pile body is enhanced; on the other hand, through the arrangement of the cage bottom cavity, the probability of empty piles or broken piles in pile grouting construction is reduced.
Drawings
Fig. 1 is a flow chart of the anti-floating construction process of the bored secant pile cage of the present invention;
fig. 2 is a schematic structural view of a reinforcement cage according to embodiment 1 of the present invention;
FIG. 3 is an enlarged cross-sectional view taken along line A-A in FIG. 2;
FIG. 4 is a schematic structural view of the helical stirrup of FIG. 2;
fig. 5 is a schematic structural view of a reinforcement cage according to embodiment 2 of the present invention;
FIG. 6 is an enlarged sectional view taken along line B-B in FIG. 5;
wherein: 1. a main rib; 2. hooping; 3. an inner bracket; 4. end-capping the template; 5. reinforcing the stirrup; q, cage bottom cavity; t1, a first flow passage; t10, a shunt hole; q1, a first via; q2, a second via; t2, a second flow passage; t20, notch; K. pile hole.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "up," "down," "left," "right"
And the like are presented for illustrative purposes only and are not intended to be the only embodiments.
Example 1
As shown in fig. 1, the anti-floating construction process of the bored secant pile cage of this embodiment includes the following steps: s1, assembling the reinforcement cage; s2, hoisting the reinforcement cage; and S3, pouring concrete.
Specifically, in S1, a hoop and a main bar are first welded to form a cylindrical cage, wherein two ends of the cage are a top end and a bottom end, respectively; and secondly, installing a sealing end template in an inner cavity at the bottom end of the cage body, wherein the outer contour shape of the sealing end template is the same as the radial section of the inner cavity of the cage body and is blocked in the cage body, and meanwhile, the sealing template and the end part of a main rib protruded from the bottom end of the cage body form a bottom cavity of the cage.
In S2, firstly, a crane is adopted to hoist the reinforcement cage from the top end of the cage body; secondly, aligning the center of the reinforcement cage with the center of the pile hole; finally, gradually sinking, and erecting the bottom ends of the autonomous ribs of the cage bottom cavity on the pile hole base surface;
in S3, the concrete firstly falls into an end inner cavity formed by the cage body and the end-sealing template, then flows and diffuses outwards and towards the bottom cage bottom cavity, the concrete surface rises after the cage bottom cavity is filled, and the concrete in the inner cavity keeps the cage body to be pressed downwards under the movement trend, so that the anti-floating pouring of the reinforcement cage in the pile pouring is completed.
Specifically, as shown in fig. 2 and 3, the reinforcement cage includes a main reinforcement 1 and a stirrup 2 forming a cage body, an inner support 3 and a blocking template 4.
The main reinforcement 1 has a plurality of ribs and extends along the pile length direction.
As shown in fig. 2, the inner brace 3 is annular and is fixedly welded to the inner side of the main rib 1 from the periphery, and the lower end of the main rib 2 is located below the inner brace 3.
The end-sealing template 4 is fixed on the inner support frame 3 and is blocked in the inner cavity of the cage body.
In this example, the end-capping die plate 4 is welded to the inner side of the main bar 1 from the circumferential side, and the end-capping die plate 4 is welded to the inner support frame 3 from the bottom.
In this way, a cage bottom cavity Q with a pouring channel t is formed among the lower end of the main bar 2, the end-capped formwork 4 and the inner support 3.
Specifically, pouring channel t is located at the side portion of cage bottom cavity Q, the cage body is vertically inserted into pile hole K from cage bottom cavity down, and when pouring, the cage body keeps the pull-down movement trend, and concrete flows into cage bottom cavity Q from the side portion of pouring channel t.
And each two adjacent main reinforcements 2 and the notch t20 formed by the end-sealed template 4 form a pouring channel t by a plurality of notches t 20.
In this example, the areas of the casting openings formed by the notches t20 are equal and are all Sq, and the caliber of the casting opening formed by each notch t20 is larger than the maximum particle size of the aggregate in the cast concrete. The flowing of the concrete is facilitated, and the strength of the formed concrete in the cage bottom cavity is ensured.
The end-capped die plate 4 is a steel plate.
In addition, the cage body further includes a reinforcement stirrup 5 fixedly disposed outside the main bar 2. Further promote the intensity of the cage body, avoid the scattering of the cage body appearing pouring the in-process.
Specifically, the reinforcing stirrup 5 is helical and wound around the outside of the main bar 2.
As shown in fig. 4, the reinforcement stirrup 5 is wound along the length of the cage with the same pitch.
In this example, the reinforcement stirrup 5 may be wound continuously or intermittently.
Meanwhile, a grid pouring opening q is formed between the reinforcement stirrup 5 and the main reinforcement 2, wherein the caliber of each grid is 1.5 times of the maximum grain diameter of aggregate in the poured concrete.
In addition, it should be noted that the weight and thickness of the bottom steel plate are not directly related to the weight of the steel reinforcement cage, in this example, the thickness is 6mm, the diameter of the circular steel plate is the same as the inner diameter of the steel reinforcement cage, and the reinforcement welding is firm. The bottom of the reinforcement cage is arranged at the bottom of the hole, the reinforcement cage is supported by the bottom, and the impact force and buoyancy generated by the falling height of the concrete cannot be resisted by the self weight of the reinforcement cage due to the fact that the hole is deep and the hollow pile reinforcement cage on the upper portion cannot be effectively fixed.
Example 2
As shown in fig. 5 and 6, the process of the anti-floating construction of the bored secant pile cage of this embodiment is substantially the same as that of embodiment 1, except that the process is different.
In the embodiment, the pouring channels t are positioned at the top and the side parts of the cage bottom cavity Q, the cage body is vertically inserted into the pile hole K from the cage bottom cavity downwards, the cage body keeps the downward pulling movement trend during pouring, and concrete flows into the cage bottom cavity Q from the top and the side parts of the pouring channels t through the pouring flow respectively.
Pouring channel t comprises a first channel t1 and a second channel t2, the first channel t1 is located on the end-capped template 4 at the top of the cage bottom cavity Q, the second channel t2 is located on the side edge of the cage bottom cavity Q, every two adjacent main ribs 2 and a notch t20 formed by the end-capped template 4 form the second channel, and the plurality of notches t20 form the second channel. Under the arrangement of the two channels, empty piles or broken piles caused by no concrete pouring in the cage bottom cavity are avoided.
The area of the first channel t1 forming the pouring opening is larger than or equal to the sum of the areas of the pouring openings formed by the plurality of notches t 20. Therefore, the downward flowing speed from the first channel is high, and the downward flowing speed can be expanded to the circumferential direction, so that the jacking of the reinforcement cage caused by the upward flowing of the concrete in the circumferential direction is avoided, and hollow piles or broken piles caused by no pouring of the concrete in the bottom cavity of the cage are further avoided.
That is, the flow rate of the pouring channel flowing into the bottom cavity of the cage from the top and the side is Q1 and Q2 respectively, and Q1 is more than or equal to Q2. The flow control is adopted, the cage body is prevented from being arched due to the flowing of concrete in the pouring process, and the upward buoyancy of the end-sealed template can be effectively reduced.
In this example, the areas of the gates formed by the notches t20 are equal and are Sq, the sum of the areas of the gates formed by the N notches is N × Sq, and the area of the gate formed by the first channel t1 is S1, where S1 is N × Sq. The arrangement facilitates the assembly of the reinforcement cage, and can better implement the pouring of the bottom cavity of the cage.
The caliber of a pouring opening formed by each notch t20 is larger than the maximum grain diameter of the aggregate in the poured concrete. The flowing of the concrete is facilitated, and the strength of the formed concrete in the cage bottom cavity is ensured.
The end-capping template 4 is a steel plate, the first channel t1 comprises a plurality of branch holes t10 distributed on the end-capping template 4, the branch holes t10 comprise a first through hole q1 positioned in the middle of the end-capping template 4 and a plurality of second through holes q2 distributed in an annular array around the first through hole q1, and the diameters of the first through hole q1 and the second through hole q2 from the top surface to the bottom surface are gradually increased. The main benefits of the design of the through hole are that: 1. guiding the flow direction of the concrete; 2. the decomposed part is buoyant.
In summary, the advantages of this embodiment are as follows:
1. the outer contour of the steel plate is the same as the inner diameter of the steel reinforcement cage, and the steel plate is connected with the main reinforcement and the circumferential reinforcement stirrup in a welding mode, so that a bottom sealing effect is achieved, most of concrete gathers in the cage in the pouring process, downward pressure is generated on the steel plate at the bottom, the whole steel reinforcement cage is pulled down, the pulling-down force is increased along with the increase of the pouring volume of the concrete, and the floating-up phenomenon cannot be generated;
2. through the arrangement of the pouring channel of the cage bottom cavity, the concrete can flow into the cage bottom cavity in a balanced manner during pouring, so that empty piles or broken piles caused by no concrete pouring in the cage bottom cavity are avoided, the upward floating force of the concrete on the reinforcement cage during pouring can be effectively reduced, and the quality of the whole pile body is ensured;
3. under the reinforcement of the spiral stirrup, on one hand, partial concrete is guaranteed to be piled up in the cage body during pouring, and further downward pressure is increased; and the other side strengthens the strength of the cage body, thereby improving the quality of the cast pile.
The present invention has been described in detail for the purpose of illustration and description, and it will be apparent to those skilled in the art that the invention can be practiced without limitation to such detail, and all changes and modifications that come within the spirit of the invention are desired to be protected.
Claims (10)
1. The anti-floating construction process of the steel reinforcement cage of the bored secant pile is characterized in that: the method comprises the following steps:
s1 assembling reinforcement cage
Firstly, a hoop reinforcement and a main reinforcement are oppositely welded to form a cylindrical cage body, wherein two end parts of the cage body are respectively a top end and a bottom end; secondly, installing a sealing end template in an inner cavity at the bottom end of the cage body, wherein the outer contour shape of the sealing end template is the same as the radial section of the inner cavity of the cage body and is blocked in the cage body, and meanwhile, the sealing template and the end part of a main rib protruded from the bottom end of the cage body form a bottom cavity of the cage;
s2 hoisting reinforcement cage
Firstly, a crane is adopted to lift the reinforcement cage from the top end of the cage body; secondly, aligning the center of the reinforcement cage with the center of the pile hole; finally, gradually sinking, and erecting the bottom ends of the autonomous ribs of the cage bottom cavity on the pile hole base surface;
s3, pouring concrete
During pouring, the concrete firstly falls into an end inner cavity formed by the cage body and the end-sealing template, then flows and diffuses outwards and towards the bottom cage bottom cavity, the concrete surface rises after the cage bottom cavity is filled, and the concrete in the inner cavity keeps the movement trend of pressing the cage body downwards, so that the anti-floating pouring of the reinforcement cage in the poured pile is completed.
2. The anti-floating construction process of the drilling secant pile cage according to claim 1, wherein: in S1, a plurality of main ribs forming the cage body are evenly distributed at intervals around the circumferential direction, the stirrups are fixedly connected with the inner sides of the main ribs, pouring channels are respectively formed at the top and the side of the bottom cavity of the cage, the flow rates of the pouring channels flowing into the bottom cavity of the cage from the top and the side are Q1 and Q2, and Q1 is more than or equal to Q2.
3. The anti-floating construction process for the drilled secant pile cage according to claim 2, wherein: the pouring channel comprises a first channel and a second channel, wherein the first channel comprises a plurality of shunting holes distributed on the end-capping template, the end parts of every two adjacent main reinforcements and a gap formed by the end-capping template form the second channel.
4. The anti-floating construction process for the drilled secant pile cage according to claim 3, wherein: the aperture of each notch is equal and larger than the maximum particle size of aggregate in the poured concrete.
5. The anti-floating construction process for the drilled secant pile cage according to claim 3, wherein: the flow distribution hole comprises a first through hole positioned in the middle of the end-sealing template and a plurality of second through holes distributed in an annular array around the first through hole, and the first through hole and the second through holes are gradually enlarged in aperture formed from the top surfaces to the bottom surfaces.
6. The anti-floating construction process of the drilling secant pile cage according to claim 1, wherein: and a reinforcing stirrup supported at the bottom of the end-sealing template is further arranged at the bottom of the cage body in the S1, and the reinforcing stirrup is fixedly welded with the inner side of the main rib.
7. The anti-floating construction process for the drilled secant pile cage according to claim 1, wherein: and fixedly welding spiral stirrups at the periphery of the cage in the S1, wherein the spiral stirrups are spirally wound outside the main ribs along the length direction of the cage.
8. The anti-floating construction process for the drilled secant pile cage according to claim 7, wherein: the screw pitches of the spiral stirrups are equal, and the length of a welding seam formed by welding the spiral stirrups with each main rib is 5-10 times of the outer diameter of each main rib.
9. The anti-floating construction process for the drilled secant pile cage according to claim 1, wherein: before S2, remove the earth and the oil stain of adhesion on the cage body surface, and the lug that the steel reinforcement cage was lifted by crane adopts round steel preparation and welds with corresponding main muscle.
10. The anti-floating construction process for the drilled secant pile cage according to claim 1, wherein: the end-sealed template is a steel plate.
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| CA2280427A1 (en) * | 1998-08-17 | 2000-02-17 | Wilhelm Haussler | Reinforcing cage |
| JP2000297429A (en) * | 1999-04-15 | 2000-10-24 | Toda Constr Co Ltd | Working method for cast-in-place concrete pile |
| CN203947466U (en) * | 2014-07-07 | 2014-11-19 | 中铁二局股份有限公司 | A kind of bored pile Anti-floating reinforced bar cage |
| CN206418495U (en) * | 2017-01-23 | 2017-08-18 | 赵景涛 | A kind of borehole filling pile cage of reinforcement |
| CN206521748U (en) * | 2017-02-04 | 2017-09-26 | 中交铁道设计研究总院有限公司 | A kind of subway foundation pit construction drill bored concrete pile |
| CN108867626A (en) * | 2018-07-23 | 2018-11-23 | 江苏省建筑工程质量检测中心有限公司 | A kind of reinforcement cage structure and preparation method thereof |
| CN109610446A (en) * | 2018-12-17 | 2019-04-12 | 中国十七冶集团有限公司 | A kind of borehole filling pile cage of reinforcement and anti-floating cage method |
| CN214116592U (en) * | 2020-12-30 | 2021-09-03 | 中交第一航务工程局有限公司 | Bored concrete pile steel reinforcement cage with prevent floating structure |
| CN214737992U (en) * | 2020-12-31 | 2021-11-16 | 腾达建设集团股份有限公司 | Steel reinforcement cage |
| CN215406024U (en) * | 2021-07-19 | 2022-01-04 | 中国建筑第四工程局有限公司 | Engineering pile reinforcement cage structure |
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