JP2007126846A - Reinforcing cage, construction method for cast-in-place concrete pile, and cast-in-place concrete pile - Google Patents

Reinforcing cage, construction method for cast-in-place concrete pile, and cast-in-place concrete pile Download PDF

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Publication number
JP2007126846A
JP2007126846A JP2005319038A JP2005319038A JP2007126846A JP 2007126846 A JP2007126846 A JP 2007126846A JP 2005319038 A JP2005319038 A JP 2005319038A JP 2005319038 A JP2005319038 A JP 2005319038A JP 2007126846 A JP2007126846 A JP 2007126846A
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concrete
pile
slime
cylindrical cover
construction
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JP2005319038A
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Masayuki Tokawa
正之 東川
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Tekken Constr Co Ltd
鉄建建設株式会社
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[PROBLEMS] For example, suitable for construction of a narrow and low-headed railway facility, facilitating the manufacture and weight reduction of a reinforcing rod, and downsizing of a work machine, allowing rapid and safe suspension of a reinforcing rod and sedimentation by slime. Reinforcement fences and on-site concrete pile construction methods that can prevent the slime and efficiently remove the slime with reasonable, high accuracy, obtain construction reliability and stable pile strength, and respond to high-rise buildings. And provide on-site concrete piles.
A reinforcing rod 4 in which a plurality of main bars 5 and a hoop bar 6 are formed in a hook shape.
A bottomed cylindrical cover 7 is provided on one end side of the reinforcing rod 4.
[Selection] Figure 1

Description

  The present invention is suitable for construction of, for example, a narrow and low-headed railway facility, and can facilitate the manufacture and weight reduction of the reinforcement rod and reduce the size of the work machine. The reinforcement rod can be suspended quickly and settled by slime. Reinforcement dredging and on-site concrete pile construction that can eliminate the slime with reasonable, high accuracy and efficiency, obtain construction reliability and stable pile strength, and respond to higher building heights Law and on-site concrete piles.

For example, when constructing on-site concrete piles in a narrow and low-headed railway facility on a home or between tracks, a small work machine was used because the work was performed in a limited time zone when the line was closed. Rapid and safe construction is required.
In addition, due to the demand for higher-rise buildings, the span of piles is large, and therefore the yield strength per pile tends to increase.

In response to such a request, there are a BH method and a TBH method as a conventional method of constructing a concrete pile on site.
Of these, the BH method uses a boring machine, attaches a bit to the tip of the boring rod, rotates it, and excavates without casing. Adopting a regular circulation system that transports the water to the hole mouth by the rising water flow and discharges it with a sand pump, the construction machine is small and has the advantage of being able to work on a small site.

  However, the BH method floats the soil in a stable liquid and discharges it from the hole mouth, so that mud cake is easily formed on the hole wall, and therefore the stable pile peripheral surface friction force necessary for the formation of pile strength can be obtained. In addition, there is a tendency that the sedimentation of the slime tends to be large, and stable pile strength and construction reliability can be obtained.

  In addition, the TBH method has the advantage of adopting a reverse-carrying soil removal method opposite to the BH method, enabling large-diameter excavation under narrow and low space construction conditions, and reducing the occurrence of mud cake and slime. There is a problem that it is difficult to construct in a confined space where the construction machine is large.

  In addition, for construction under low heads, many heavy steel reinforcement pipes and pile reinforcement connections are generated on the outer periphery of the pile, and insertion of reinforcement steel pipes increases joint welding and main reinforcement joint costs for pile reinforcement. Therefore, the work is complicated and time-consuming, and it is difficult to cope with the construction with the line closed, and the development of an alternative construction method has been desired in advance.

  As a construction method for on-site concrete piles that meet such demands, an injection pipe and a discharge pipe are attached in advance to the reinforcing bar, and the reinforcing bar is suspended in the pile hole, and their lower ends are placed at the bottom of the slime layer. There is a construction method in which an injection material such as cement milk is inserted from the injection pipe and pumped, and slime is discharged from the discharge pipe to the outside (see, for example, Patent Document 1).

  However, since the construction method mixes the injection material into the slime and gradually replaces the slime with the injection material, it takes time to discharge the slime, and because the concrete and the injection material are discharged mixed with the slime, It was pointed out that the waste cost and slime discharge efficiency declined.

  As another construction method, a hook-shaped preloading part is attached to the lower end of the reinforcing bar, the reinforcing bar is suspended in the pile hole, and an injection material is injected into the injection bag body of the preloading part. After inflating and placing it on the slime part of the pile bottom, a concrete is placed in the pile hole, and when the concrete is hardened to a predetermined strength, an injection material is applied to the injection bag body. There is a construction method for injecting and pressing the pile bottom to increase the bearing capacity of the pile bottom ground and to reduce the amount of pile settlement (for example, see Patent Document 2).

  However, the construction method uses the difference in specific gravity between the stabilizing liquid containing slime and the concrete to replace the stabilizing liquid with the concrete and discharge the slime. Complete removal of slime could not be confirmed, and slime was mixed with concrete, resulting in a decrease in quality and strength of concrete piles, and sedimentation due to slime increased, making it difficult to obtain construction reliability. there were.

  In addition, the rebar rods used in these constructions are manufactured by welding the hood material to the long main bars, so they are large and heavy, and are manufactured and transported and suspended in pile holes. There was a problem that the inclusion was large.

  As a reinforcing bar rod that solves such a problem, there is a reinforcing rod rod in which a plurality of reinforcing rod rod units are connected to be extendable in the axial direction, the length of the reinforcing rod rod unit is shortened, and the length of the main bar is shortened ( For example, see Patent Document 3).

  However, the reinforcing bar unit requires a wide and heavy FOUP steel and a main bar connecting the two FOOP steels, and the main bar is formed by wrapping approximately twice the width of the FOOP steel. As a result, the main bars become longer and heavier, helping to increase the weight of the rebar, and as a means for connecting the main bars, both ends of the main bars are bent and slid onto the bending metal fittings on the hood steel. Since they are connected in a movable manner, the number of parts is large, and there is a problem that it takes time and effort to produce and assemble them.

Japanese Patent No. 3615073 Japanese Patent No. 3688546 JP-A-8-105043

  The present invention solves such problems, and is suitable for construction of, for example, a narrow and low-headed railway facility. The reinforcement rod can be easily manufactured and reduced in weight, and the working machine can be reduced in size. Reinforcement dredging and on-site construction that can prevent sluging and settling due to slime, and can remove slime rationally, with high accuracy and efficiency, provide construction reliability and stable pile strength, and respond to high-rise buildings The purpose is to provide a method for constructing hammered concrete piles and on-site concrete piles.

According to the first aspect of the present invention, there is provided a reinforcing rod in which a plurality of main reinforcing bars and oops are formed in a hook shape, a bottomed cylindrical cover is provided on one end side of the reinforcing rod, and the reinforcing rod is used as a pile hole. While accommodating stably, a cylindrical cover is immersed in the slime which stays in the bottom part of a pile hole, and slime can be removed efficiently and highly accurately.
In the invention of claim 2, the main bar and the hoop are made of reinforcing bar or carbon fiber, and can be easily and inexpensively manufactured by a conventional method in the case of a reinforcing bar, and in the case of carbon fiber, The same level of strength can be obtained, and the weight reduction makes it easier to hang the pile hole and reduce the size of the work equipment, and also eliminates the worry of corrosion like rebar.

The invention according to claim 3 is such that a reinforced bar formed with a carbon fiber strand is bonded to the main bar of the carbon fiber strand, and an adhesive is impregnated into the main bar and the FO bar, so that it is complicated as a reinforcing bar. No welding work is required, and the main bar and the hoop are impregnated with an adhesive, so that the strength of the main bar and the hoop can be easily obtained. ing.
According to a fourth aspect of the present invention, the bottom of the cylindrical cover is formed to be engageable with the bottom of the drilling hole, and the reinforcing rod is stably accommodated in the bottom of the drilling hole, and the slime stays in the bottom of the drilling hole. Can be removed with high accuracy and efficiency.

The invention according to claim 5 is a construction method of a concrete pile pile which hangs a reinforcing rod in a pile hole excavated in the ground and places a concrete, and has a bottom which can accommodate the concrete on the lower side. Compared to the conventional construction method in which a reinforcing rod provided with a cylindrical cover is suspended in the pile hole and the cylindrical cover is accommodated in the bottom of the pile hole, and the reinforcing rod is suspended after removing the slime. In addition, the slime can be removed reasonably with high accuracy and efficiency through the weight of the concrete accommodated in the cylindrical cover, the work period can be shortened and the construction cost can be reduced, and the slime can be removed with high accuracy. Thus, the pile pile strength at the tip can be obtained, and the reliability of construction of on-site concrete piles that can be adapted to higher building heights can be obtained.
In the invention of claim 6, the cylindrical cover can be immersed in a slime staying at the bottom of the pile hole, and the slime can be pushed out to the outside of the cylindrical cover so that the slime can be removed with high accuracy and efficiency. I am doing so.

According to the invention of claim 7, after the reinforcing rod is suspended in the pile hole, a concrete is placed on the reinforcing rod and accommodated in the cylindrical cover, and the cylindrical cover is landed on the bottom of the pile hole. Thus, the weight of the concrete accommodated in the cylindrical cover is added, and the slime is pushed away to the outside of the cylindrical cover, so that the slime can be removed with high accuracy and efficiency.
In the invention of claim 8, after the concrete is accommodated in the cylindrical cover, the slime is pushed out between the pile hole and the cylindrical cover, and suction and discharge of the slime is rationally and efficiently in the narrow area. I can do it.

  The invention of claim 9 is characterized in that the slime is rationally and efficiently removed efficiently by pushing out the slime to the outside of the cylindrical cover and then discharging the slime to the outside of the pile hole. This prevents the concrete piles from subsidizing immediately and makes it possible to obtain construction reliability and homogeneity.

A tenth aspect of the present invention is the in-situ concrete pile in which a reinforcing bar having a plurality of main bars and hap bars formed in a bowl shape is arranged in a concrete placed in a pile hole. A reinforcing rod provided with a bottomed cylindrical cover is arranged in the concrete, and the cylindrical cover is arranged at the lower end of the concrete pile so as to be in close contact with the bottom of the pile hole. The tip of the cylindrical cover is brought into contact with a good support ground, and the entanglement of the concrete at the tip of the cylindrical cover is eliminated to improve the strength and stability of the in-situ concrete pile. ing.
According to the invention of claim 11, the main reinforcing bar and the hoop are made of reinforcing steel or carbon fiber, and an in-situ concrete pile according to construction conditions can be selected. There is no concern about such corrosion, and the initial quality can be maintained for a long time.

According to the first aspect of the present invention, since the bottomed cylindrical cover is provided on the one end side of the reinforcing rod, the reinforcing rod can be stably accommodated in the pile hole and the cylindrical cover is retained in the bottom portion of the pile hole. The slime can be immersed in the slime and removed efficiently and with high accuracy.
In the invention of claim 2, since the main reinforcing bar and the hoop are made of rebar or carbon fiber, the rebar can be easily and inexpensively manufactured by a conventional method, and if it is made of carbon fiber, the rebar is made. It is possible to obtain the same strength as a coffin and to make it easier to hang it into the pile hole and to reduce the size of the work machine, and to eliminate the worry of corrosion like a reinforcing bar.

According to the invention of claim 3, since the reinforced bar formed with the carbon fiber strand is bonded to the main reinforcing bar of the carbon fiber strand, and the main reinforcing bar and the reinforced bar are impregnated with the adhesive, No welding work is required, and the main reinforcing bar and FO bar are impregnated with an adhesive, so that the main bar and the FO bar can easily have the same strength as the reinforcing bar. Can be achieved.
In the invention according to claim 4, since the bottom portion of the cylindrical cover is formed to be engageable with the bottom portion of the drilling hole, the reinforcing rod can be stably stored in the bottom portion of the drilling hole and stays in the bottom portion of the drilling hole. Slime can be removed with high accuracy and efficiency.

The invention of claim 5 suspends a reinforcing rod provided with a bottomed cylindrical cover capable of accommodating concrete on the lower side in the pile hole, and accommodates the cylindrical cover at the bottom of the pile hole. Compared to the conventional construction method in which a reinforcing rod is suspended after the slime is removed, the slime is removed reasonably accurately and efficiently mainly through the weight of the concrete accommodated in the cylindrical cover, and the construction period is shortened. In addition to reducing the construction cost and reducing the construction cost, it is possible to obtain the pile strength of the tip by removing the slime with high accuracy, and to obtain the reliability of construction of on-site concrete piles that can respond to higher building heights. is there.
In the invention of claim 6, since the cylindrical cover is immersed in the slime staying at the bottom of the pile hole, and the slime is pushed out of the cylindrical cover, the slime is highly accurate through the weight of the reinforcing rod. It can be removed efficiently.

According to the invention of claim 7, after the reinforcing rod is suspended in the pile hole, a concrete is placed on the reinforcing rod and accommodated in the cylindrical cover, and the cylindrical cover is landed on the bottom of the pile hole. Therefore, the weight of the concrete accommodated in the cylindrical cover is added, the slime can be pushed out of the cylindrical cover, and the slime can be removed with high accuracy and efficiency.
In the invention of claim 8, since the slime is pushed out between the pile hole and the cylindrical cover after the concrete is accommodated in the cylindrical cover, suction and discharge of the slime is rational and efficient in the narrow area. Can be done well.

  According to the ninth aspect of the present invention, since the slime is pushed out of the cylindrical cover and then discharged to the outside of the pile hole, the slime is efficiently removed efficiently and accurately with a slime residue. -Prevents immediate settlement of toe piles and has the effect of obtaining construction reliability and homogeneity

In the invention of claim 10, a reinforcing rod having a bottomed cylindrical cover on one end side is arranged in the concrete, and the cylindrical cover is arranged at the lower end of the concrete pile. Since the bottom of the pile hole is arranged in close contact with the bottom of the pile hole, the tip of the cylindrical cover is brought into contact with a good supporting ground, and the concrete is not caught in the tip of the cylindrical cover. Strength and stability can be improved.
In the invention of claim 11, since the main reinforcing bar and the hoop are made of reinforcing steel or carbon fiber, it is possible to select on-site concrete piles according to construction conditions. Therefore, the quality at the beginning of construction can be maintained for a long time.

  Hereinafter, the illustrated embodiment in which the present invention is applied to construction in a narrow and low-altitude railway facility will be described. In FIGS. 1 to 4, reference numeral 1 denotes a ground below a station home or between tracks, and is positioned at a predetermined position. A pile hole 2 is excavated by an excavator (not shown) such as a ring machine, and a slime 3 in which a liquid stable liquid mixed with, for example, bentonite particles and soil debris is retained at the bottom of the pile hole 2 A reinforcing bar 4 as a reinforcing bar is suspended in the pile hole 2 via an appropriate heavy machine (not shown).

The reinforcing bar 4 is made of reinforcing steel bars, which are rebar main bars 5 arranged at equal intervals in the circumferential direction, and closed band bars arranged by welding at equal intervals in the axial direction of the main bars 5. A cylindrical cover 7 having a substantially bottomed cylindrical shape is attached to the lower end of the collar 4 in a liquid-tight manner via a ring collar 8.
The cylindrical cover 7 has a steel plate formed in a cylindrical shape, and a bottom cover 9 in which a steel plate is formed in a conical shape is assembled by welding or the like at the shaft end.
The lower end of the bottom cover 9 is formed in a slightly similar shape that is slightly smaller than the lower end of the drilling hole 2, and can be brought into close contact with the lower end of the drilling hole 2.

  In the figure, reference numeral 10 denotes a slime discharge pipe accommodated in the drilling hole 2 adjacent to the reinforcing bar 4, the lower end portion is immersed in the slime 3, and the other end communicates with a suction pump (not shown). Reference numeral 11 denotes a tremi tube accommodated in the reinforcing bar 4, which allows the concrete 12 to be poured from the upper end.

In the embodiment, as the reinforcing bar, the reinforcing bar 4 and the reinforcing bar 6 use the reinforcing bar bar 4 made of reinforcing bars. However, the present invention is not limited to this. A carbon fiber yarn that is a strong and corrosion-resistant member, or a strand formed by combining a plurality of strands of the carbon fiber is formed, and the main reinforcing bar 5 and the hoop 6 are impregnated with an adhesive, and approximately the same level as a reinforcing bar. It may be formed with strength, and the main reinforcement 5 and the FOUP 6 may be bonded with an adhesive.
Such a carbon fiber reinforcing rod is lighter than the reinforcing rod, has the advantage of facilitating the suspension work into the pile hole 2 and reducing the size of the working machine, and without the concern of corrosion like a reinforcing rod. There is.

When constructing on-site concrete piles using the reinforcing bar 4 configured as described above, the reinforcing bar 4 is first manufactured at the construction site or factory.
The rebar rod 4 is assembled into a cylindrical rod shape using a main bar 5 and a hoop bar 6 as in the prior art, and a ring collar 8 is fixed to the peripheral surface of one end thereof, and a cylindrical cover is attached to the collar 8. The cylindrical cover 7 is manufactured by forming a steel plate into a cylindrical shape and welding a bottom cover 9 having a steel plate formed into a conical shape at one end thereof. This situation is as shown in FIGS.

  As described above, the rebar rod 4 has a simple structure in which the bottomed tubular cover 7 is attached to one end of a conventional rebar rod, and thus can be easily manufactured using a conventional method.

Next, when constructing an in-situ concrete pile using the manufactured reinforcing bar 4, the procedure shown in FIGS.
First, the ground 1 at a predetermined position of the railway facility is excavated using an excavator (not shown) and a known stabilizing liquid during the line closing time, and the pile hole 2 having a predetermined depth is drilled while stabilizing the pile hole wall. .
During the drilling, the stabilizing liquid stays at the bottom of the pile hole 2, and debris is mixed into the stabilizing liquid to form the slime 3. This situation is as shown in FIG.

Thereafter, the tubular cover 7 is directed downward in the center of the pile hole 2 and the reinforcing bar 4 is suspended using an appropriate heavy machine (not shown), and the lower portion of the tubular cover 7 is suspended in the pile hole. 2 in the bottom.
Further, the slime discharge pipe 10 is suspended in the pile hole 2 adjacent to the reinforcing bar 4, and the suction port is immersed in the slime 3.

  In this way, as described above, the lower portion of the cylindrical cover 7 is immersed in the slime 3 by weight, and the slime 3 immediately below the cover 7 is pushed away and moved to the outside. Rises. This situation is as shown in FIG.

  Under such circumstances, the tremi tube 11 is suspended in the reinforcing bar 4 and its lower end is positioned at the bottom of the cylindrical cover 7, and from its upper end via a concrete pressure feeding device (not shown). Then, the concrete 12 is poured.

  In this way, the concrete 12 flows down in the tremi tube 11 and is accommodated in the cylindrical cover 7. For this reason, the reinforcing bar 4 further sinks due to its own weight and the weight of the concrete 12, and the slime 3 immediately below the cylindrical cover 7 is pushed away and moves outward, and the surface of the slime 3 rises. This situation is as shown in FIG.

Thereafter, the concrete 12 is further discharged from the tremi tube 11 to the cylindrical cover 7, and when the concrete 12 is substantially filled in the cover 7, the weight of the reinforcing bar 4 and the concrete 12 is increased. As a result, the reinforcing bar 4 is brought into close contact with the bottom of the pile hole 2.
For this reason, the slime 3 immediately below the cylindrical cover 7 is pushed away almost completely, and this moves to a narrow area between the pile hole 2 and the cylindrical cover 7, and the surface of the slime 3 further rises.

Under such circumstances, the suction pump (not shown) is driven, the slime 3 is sucked from the lower end of the slime discharge pipe 10, and this is led to the slime discharge pipe 10 and discharged to the outside. This situation is as shown in FIG.
In this case, since the slime 3 is pushed out into the narrow area between the pile hole 2 and the cylindrical cover 7 as described above, the suction or discharge by the pump is efficiently performed.

  In this way, the slime 3 is discharged to the outside, and the concrete 12 is discharged from the tremi tube 11 into the cylindrical cover 7. When the cover 7 is filled with the concrete 12, the surplus concrete 12 Overflows from the cylindrical cover 7 and fills the entire cross section of the pile hole 2.

After the slime 3 is discharged, the concrete 12 is discharged from the tremi tube 11, and the concrete 12 fills the periphery of the cylindrical cover 7, gradually fills the pile hole 2, and the entire pile hole 2 is filled. When filled, the supply of the concrete 12 is stopped, and the tremi pipe 11 and the slime discharge pipe 10 are pulled out from the pile hole 2 or the concrete 12.
Thereafter, the concrete 12 is hardened and the concrete piles are finished on-site. This situation is as shown in FIG.

In the concrete pile thus struck in the field, the slime 3 is removed quickly and accurately by the cylindrical cover 7 and the slime discharge pipe 10 as described above. Since the pile cover 7 is embedded in the bottom of the concrete pile and is integrated with the reinforcing bar 4, the pile strength The tip of the cover 7 is brought into contact with the good support ground 1 to eliminate the entanglement of the concrete 7 at the tip of the cylindrical cover 7, thereby improving the strength and stability of the in-situ concrete pile.

  In addition, although this embodiment has arrange | positioned the reinforcing bar 4 inside a concrete pile, not only in this example, it arrange | positions inside the concrete structure like a bridge pier, an elevated plate, a support | pillar, and a slab. Also good.

  The method of constructing the steel bar and the on-site concrete pile of the present invention and the on-site concrete pile can facilitate the manufacture and weight reduction of the reinforcing bar and reduce the size of the work machine. It can prevent sedimentation due to suspension and slime, and can efficiently remove slime with reasonable and high accuracy, and it can provide construction reliability and stable pile strength, and can respond to high-rise buildings. It is suitable for the construction of the head railway facility.

It is sectional drawing of the rebar rod to which this invention is applied, shows the situation where the rebar rod is suspended in the pile hole, the concrete is placed, and the slime at the bottom of the pile hole is discharged to the outside. It is a perspective view of a reinforcing bar rod to which the present invention is applied. It is sectional drawing which follows the AA line of FIG.

It is sectional drawing which shows the construction procedure by this invention, (a) shows the condition after drilling a pile hole, (b) hangs a reinforcing bar in the pile hole, and immerses the lower part of a cylindrical cover in slime. It shows the situation where the slime is pushed away. (C) shows a situation in which a tremi tube is inserted into the reinforcing bar, and a concrete is driven through the tube, and the concrete is accommodated in a cylindrical cover. (D) is a concrete. Shows the situation where the cylindrical cover is filled and the slime is pushed out between the cylindrical cover and the pile hole and sucked out. (E) shows a state in which the concrete overflowing from the cylindrical cover is filled in the entire pile hole and the tremi pipe and the discharge pipe are pulled out.

Explanation of symbols

1 Ground 2 Pile hole 3 Slime 4 Reinforcement rod (rebar rod)
5 Main muscle 6 Hoop muscle 7 Tubular cover

Claims (11)

  1.   A reinforcing rod having a plurality of main bars and hood bars formed in a bowl shape, wherein a bottomed cylindrical cover is provided on one end side of the reinforcing rod.
  2.   The reinforcing bar according to claim 1, wherein the main bar and the hoop are made of steel bars or carbon fibers.
  3.   The reinforcing barb according to claim 1, wherein a hoop formed of a carbon fiber strand is bonded to a main bar of the carbon fiber strand, and the main bar and the hoop are impregnated with an adhesive.
  4.   2. The reinforcing rod according to claim 1, wherein the bottom portion of the cylindrical cover is formed to be engageable with the bottom portion of the drilling hole.
  5.   In the construction method of on-site concrete piles, in which a reinforcing rod is suspended in a pile hole excavated in the ground and a concrete is placed, a bottomed cylindrical cover capable of accommodating the concrete is provided on the lower side. A method for constructing an in-situ concrete pile, wherein the provided reinforcing rod is suspended in the pile hole, and the cylindrical cover is accommodated in the bottom of the pile hole.
  6.   6. The method for constructing on-site concrete piles according to claim 5, wherein the tubular cover is immersed in a slime staying at the bottom of the pile hole, and the slime is pushed out to the outside of the tubular cover.
  7.   6. The site according to claim 5, wherein after the reinforcement rod is suspended in the pile hole, a concrete is placed on the reinforcement rod and accommodated in a cylindrical cover, and the cylindrical cover is landed on the bottom of the pile hole. Construction method of hammered concrete pile.
  8.   The construction method of the spot cast concrete pile of Claim 5 or Claim 6 which extrudes the said slime between a cylindrical cover and a pile hole after accommodating the said concrete in a cylindrical cover.
  9.   9. The construction method of a spot piled concrete pile according to claim 6 or 8, wherein the slime is discharged to the outside of the pile hole after the slime is pushed out of the cylindrical cover.
  10.   In the in-situ concrete pile in which the reinforcement rod formed with a plurality of main bars and hook bars in a bowl shape is placed in the concrete placed in the pile hole, a cylindrical cover with a bottom on one end side A reinforcing rod provided with-is disposed in the concrete, the tubular cover is disposed at the lower end of the concrete pile, and is disposed in close contact with the bottom of the pile hole. -Toe pile.
  11. The in-situ concrete pile according to claim 10, wherein the main reinforcing bar and the hoop are made of reinforcing steel or carbon fiber.
JP2005319038A 2005-11-02 2005-11-02 Reinforcing cage, construction method for cast-in-place concrete pile, and cast-in-place concrete pile Withdrawn JP2007126846A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102383420A (en) * 2011-08-17 2012-03-21 江苏建华管桩有限公司 High-strength concrete prefabricated pile doped with fiber-reinforced plastic bar
CN102644279A (en) * 2012-04-28 2012-08-22 从卫民 Uplift pile with prestress reinforced plastic rods
CN102644276A (en) * 2012-04-28 2012-08-22 从卫民 Supporting cantilever pile with prestress reinforced plastic rod and prestress steel bowstring composite structure
CN102644278A (en) * 2012-04-28 2012-08-22 从卫民 Prestress steel-plastic structure retaining cantilever pile with reinforced plastic stirrups
CN102644281A (en) * 2012-04-28 2012-08-22 从卫民 Prestressed supporting cantilever pile with reinforcing plastic stirrups
CN103741682A (en) * 2013-12-31 2014-04-23 江苏中瑞路桥建设有限公司 Carbon fiber cloth bag cast-in-situ anti-arch curved surface combined irregular-shaped pile and construction method thereof
CN103898839A (en) * 2014-03-03 2014-07-02 福建省建筑工程质量检测中心有限公司 Bridge supplementary pile preloading consolidation method
CN104612413A (en) * 2015-01-30 2015-05-13 中冶建工集团有限公司 Static pressure pipe pile hole protecting device
JP2015143453A (en) * 2013-05-31 2015-08-06 株式会社新生工務 Pile and pile installation method
JP2016173028A (en) * 2013-05-31 2016-09-29 株式会社新生工務 Pile and installation method for pile

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102383420A (en) * 2011-08-17 2012-03-21 江苏建华管桩有限公司 High-strength concrete prefabricated pile doped with fiber-reinforced plastic bar
CN102383420B (en) * 2011-08-17 2014-01-15 江苏建华管桩有限公司 High-strength concrete prefabricated pile doped with fiber-reinforced plastic bar
CN102644279A (en) * 2012-04-28 2012-08-22 从卫民 Uplift pile with prestress reinforced plastic rods
CN102644276A (en) * 2012-04-28 2012-08-22 从卫民 Supporting cantilever pile with prestress reinforced plastic rod and prestress steel bowstring composite structure
CN102644278A (en) * 2012-04-28 2012-08-22 从卫民 Prestress steel-plastic structure retaining cantilever pile with reinforced plastic stirrups
CN102644281A (en) * 2012-04-28 2012-08-22 从卫民 Prestressed supporting cantilever pile with reinforcing plastic stirrups
JP2015143453A (en) * 2013-05-31 2015-08-06 株式会社新生工務 Pile and pile installation method
JP2016173028A (en) * 2013-05-31 2016-09-29 株式会社新生工務 Pile and installation method for pile
CN103741682A (en) * 2013-12-31 2014-04-23 江苏中瑞路桥建设有限公司 Carbon fiber cloth bag cast-in-situ anti-arch curved surface combined irregular-shaped pile and construction method thereof
CN103741682B (en) * 2013-12-31 2015-10-07 江苏中瑞路桥建设有限公司 The construction method of a kind of carbon fiber cloth bag cast-in-place antiarch surface composition shaped pile
CN103898839A (en) * 2014-03-03 2014-07-02 福建省建筑工程质量检测中心有限公司 Bridge supplementary pile preloading consolidation method
CN104612413A (en) * 2015-01-30 2015-05-13 中冶建工集团有限公司 Static pressure pipe pile hole protecting device

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