KR20170046424A - Method for supporting an augered pile and apparatus thereof - Google Patents

Method for supporting an augered pile and apparatus thereof Download PDF

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Publication number
KR20170046424A
KR20170046424A KR1020150146746A KR20150146746A KR20170046424A KR 20170046424 A KR20170046424 A KR 20170046424A KR 1020150146746 A KR1020150146746 A KR 1020150146746A KR 20150146746 A KR20150146746 A KR 20150146746A KR 20170046424 A KR20170046424 A KR 20170046424A
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South Korea
Prior art keywords
main surface
surface fixing
pile
fixing liquid
excavation hole
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KR1020150146746A
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Korean (ko)
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KR101816006B1 (en
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도종남
남문석
김홍종
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한국도로공사
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/26—Placing by using several means simultaneously
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/003—Injection of material

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The present invention relates to a main surface fixing method for an embedded pile and an apparatus therefor, and comprises: a first main surface fixing hardening material hardened at a lower portion of an excavation hole by an injection of a bubble expanding main surface fixing liquid between an inner wall of the excavation hole excavated on the ground and the outer surface of a pile inserted into the excavation hole; and a second main surface fixing hardening material hardened at an upper portion of the excavation hole by an injection of a finishing main surface fixing liquid between the inner wall of the excavation hole excavated on the ground and the outer surface of the pile inserted into the excavation hole, wherein the bubble expanding main surface fixing liquid includes water, cement, gypsum, hydrogen peroxide, and glycerin. According to the present invention, horizontal resistance of the pile embedded in the ground is increased, the inner wall of the excavation hole relaxed by the excavation is densely strengthened, and a circulation loss phenomenon is minimized.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pile pile,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

Generally, the pile is embedded in the ground below the foundation slab of the civil engineering structure or the building to transmit the load of the civil engineering structure or the building such as the bridge to the ground, and strengthens the ground. The types of piles include steel pipe piles, PHC (Pretensioned spun high strength concrete) piles, and composite piles.

In addition, there are pile driving methods such as pile driving, pile driving, and on-site pile driving. In case of piling method, construction is simple, but construction is greatly reduced due to the regulation of noise and vibration due to a lot of noise vibration during construction. The embedded pile method has been developed to solve the problem of noise and vibration generated during the construction of the pile driving method, and the construction is rapidly increasing due to the regulation of noise and vibration. Soil-cement injected precast pile (SIP) method and SDA (seperated donut auger) method are mainly used for the piercing method.

Fig. 1 shows an example of an S-IP method for performing a final putting order. As shown in Fig. 1, an example of the S-IP method of performing the final putting is as follows. First, the ground is excavated with the auger 10 of the excavator to form the excavation hole H at a predetermined depth The inner diameter of the excavation hole H is formed to be about 10 cm larger than the outer diameter of the pile. Next, a main surface fixing liquid (also referred to as a cement paste) L1 is injected into the excavation hole H and the auger 10 of the excavator is recovered in the excavation hole H (see FIGS. The pile P is inserted into the excavation hole H into which the main surface fixing liquid L1 is injected (refer to FIG. 1E), and the pile P is finally hit with the hammer 20. In this method, the final depth of the lower end (tip) of the pile P plays an important role in determining the bearing capacity.

Fig. 2 shows an example of the S-IP method without a final screen because the final screen can not be performed. As shown in FIG. 2, an example of the S-IP method without a final touch is to excavate the ground with the auger 10 of the excavator to form the excavation hole H with a predetermined depth (see a and b in FIG. 2) , And the inner diameter of the excavation hole (H) is formed to be about 10 cm larger than the outer diameter of the pile. The tip fixing liquid L2 is injected into the excavation hole H through the hollow portion provided in the auger 10 of the excavator and the auger 10 is pulled out, The tip fixing liquid is injected from the bottom to the set height (see Fig. 2c). Subsequently, while the main surface fixing liquid L1 is injected through the hollow portion of the excavator auger 10, the excavator auger 10 is continuously pushed out to inject the fixing liquid L1 up to a set height, and then the excavator auger 10 is inserted into the excavation hole H ) (See Fig. 2 (d)). Then, the pile P is inserted into the excavation hole H, and inserted at a predetermined distance from the bottom of the excavation hole H (see FIGS. 2E and 2F).

Fig. 3 shows an example of the SDI construction method in order. 3, an example of the SDI method is as follows. First, the casing 30, which surrounds the outside of the auger 10, is inserted into the ground while digging the ground with the auger 10 of the excavator, Thereby forming a drilling hole H (see a and b in Fig. 3). The main fixation liquid L1 is injected into the excavation hole H, that is, inside the casing 30 through the hollow portion provided in the auger 10 at a predetermined height while drawing out the auger 10, And recovered from the casing 30 (see e in Fig. 3). The pile P is inserted into the casing 30 into which the main surface fixing liquid L1 is injected and the casing 30 is pulled out from the excavation hole H (see e in FIG. 3) So that the pile P is pressed or struck (see Fig. 3, f).

However, in the above-mentioned methods, as shown in FIG. 4, when the main surface fixing liquid L1 is injected into the excavation hole H, The surface level of the main surface anchoring liquid L1 in the excavation hole H is lowered to a certain depth from the surface where the outgoing water phenomenon occurs frequently and the main surface anchoring liquid L1 is applied to the upper portion of the excavation hole H corresponding to the upper end of the pile P, Will not be filled up tightly. Therefore, when the horizontal force acts on the pile embedded in the ground, most of the horizontal force must be resisted at the upper part of the pile P, but the fixing liquid L1 is not tightly filled in the upper part of the hole H The horizontal resistance of the pile P may be significantly reduced.

On the other hand, if the upper surface level of the main surface anchoring solution L1 is lowered due to the water development under the condition that the main surface anchoring solution L1 is injected into the excavation hole H, the anchoring solution L1 can be repeatedly charged, Therefore, there is a problem in that a long time is required because the working process is not easy and the main surface fixing liquid L1 is repeatedly charged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for fixing a ground surface of a pile to increase the horizontal resistance of the pile embedded in the ground.

It is another object of the present invention to provide a method and apparatus for dugging an inner wall of an excavation hole that is relaxed by excavation and minimizing the daytime phenomenon.

In order to accomplish the object of the present invention, Injecting a bubble expanding main surface fixing solution into the drilling hole; Inserting the pile into a drilling hole; The method according to claim 1, wherein the bubble expanding main surface fixing solution comprises water, cement, gypsum, hydrogen peroxide, and glycerin, and the finishing type main surface fixing solution is water, cement, gypsum, hydrogen peroxide , Glycerin, and sodium aluminate.

Also, there is provided a method of manufacturing a semiconductor device, comprising: excavating a ground to form an excavation hole; Injecting a bubble expanding main surface fixing solution into the drilling hole; Inserting the pile into a drilling hole; Wherein the bubble expandable main surface fixing liquid comprises water, cement, gypsum, hydrogen peroxide, and glycerin, and the closed type main surface fixing liquid is a buried pile including foamed urethane, A method of fixing the main surface is provided.

The first composition is prepared by blending 1% of the weight ratio of the cement of the base material with the base material having a composition ratio (W / C) of water (W) to cement (C) of 0.85 to 1, It is preferred that 5% hydrogen peroxide by weight of the composition is blended in the first composition to make the second composition and 1% of the glycerin in the second composition is blended in the second composition.

A first main surface fixed hardening material hardened at a lower portion of the drilling hole by injecting a bubble expanding main surface fixing solution between an inner wall of the drilling hole drilled in the ground and an outer surface of a pile inserted into the drilling hole; And a second main surface immobilization hardening material which is hardened at the upper portion of the drilling hole by injecting a main surface immersion liquid between the inner wall of the drilling hole and the outer surface of the pile inserted into the drilling hole, Cement, gypsum, hydrogen peroxide, and glycerin.

The first composition is prepared by blending 1% of the weight ratio of the cement of the base material with the base material having a composition ratio (W / C) of water (W) to cement (C) of 0.85 to 1, It is preferred that 5% hydrogen peroxide by weight of the composition is blended in the first composition to make the second composition and 1% of the glycerin in the second composition is blended in the second composition.

It is preferable that the closed type main surface fixing solution further contains sodium aluminate in the bubble expandable main surface fixing solution.

It is preferable that the bubble expanding main surface fixing liquid is filled from the bottom of the excavation hole to a depth of 0.9 to 1.1 m before the ground, and the finishing main surface fixing liquid is filled to 0.9 to 1.1 m from the ground.

The closed type main surface fixing liquid may include foamed urethane.

When the closed type main surface fixing liquid includes foamed urethane, the bubble expandable main surface fixing liquid is filled from the bottom of the excavation hole to 0.4 to 0.6 m before the ground, and the finished main surface fixing liquid is filled to 0.4 to 0.6 m from the ground.

The present invention is characterized in that a pile is supported by the first main surface fixed hardening material by injecting a bubble expandable main surface fixing liquid between the outer peripheral surface of the pile and the inner wall of the drilling hole in a state where the pile is inserted into the drilling hole, And the upper portion of the pile is supported by the hardened second main surface fixed hardening material by injecting the finishing main surface fixing liquid between the inner walls. As a result, the pile inserted into the drilling hole is firmly supported.

In addition, the present invention is characterized in that a bubble expanding main surface fixing liquid is injected into an excavation hole into which a pile is inserted, so that water and cement, which are the base materials of the bubble expansion main surface fixing liquid, are hardened and support the pile inserted into the excavation hole, Since the compressive force for pressing the inner wall of the excavation hole is increased, the inner wall is densified, the drying shrinkage is minimized by the glycerin component, and the adhesive strength is increased. Therefore, the surrounding ground of the pile is strengthened and the adhesion strength of the pile is increased. The supporting force is increased and the horizontal resistance is increased.

In addition, the present invention allows the base-type main surface fixing liquid to be hardened faster than the bubble-expanding main surface fixing liquid injected into the drill hole into which the pile is inserted, thereby sealing the entrance of the drilling hole, so that the bubble expanding main surface fixing solution expands toward the entrance side of the drilling hole Expansion of the bubble expanding main surface fixing liquid is promoted to the inner wall of the drilling hole, effectively compressing the inner wall of the drilling hole, effectively chipping around the drilling hole. In addition, since the closed type main surface fixing liquid is hardened faster than the bubble expanding main surface fixing liquid injected into the pit-inserted drilling hole, the entrance of the drilling hole is sealed, thereby preventing the bubble expanding main surface fixing solution from leaking through the entrance of the drilling hole In addition, the amount of injection is reduced by minimizing the daytime phenomenon and minimizing the loss of the bubble expanding main surface fixing solution.

FIG. 1 is a sectional view sequentially showing an example of an S-IP technique for performing a final putt,
FIG. 2 is a sectional view sequentially showing an example of an S-IP technique without a final touch screen,
Fig. 3 is a sectional view sequentially showing an example of the SDI method,
FIG. 4 is a cross-sectional view showing the day-to-day phenomenon of the main surface fixing liquid injected into the excavation hole into which the pile is inserted,
FIG. 5 is a flowchart showing a first embodiment of a method for fixing a buried pile main surface according to the present invention,
FIG. 6 is a sectional view showing a construction procedure of the first embodiment of the method for fixing a buried pile main surface according to the present invention,
7 is a flowchart showing a second embodiment of a method for fixing a buried pile main surface according to the present invention,
FIG. 8 is a sectional view showing a construction sequence of a second embodiment of a method for fixing a buried pile main surface according to the present invention,
FIG. 9 is a front view showing an embodiment of an embedded pile main surface fixing apparatus according to the present invention. FIG.
FIG. 10 is a front view of an embedded pile main surface fixing device having another embodiment of a second main surface fixed hardening material constituting an embodiment of the embedded pile main surface fixing device according to the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a method and apparatus for fixing a buried pile mortar according to the present invention will be described with reference to the accompanying drawings.

5 is a flowchart showing a first embodiment of a method for fixing a buried pile main surface according to the present invention. FIG. 6 is a view showing a first embodiment of a method for fixing a buried pile main surface according to the present invention in a construction sequence.

As shown in FIGS. 5 and 6, in the first embodiment of the embedding pile main surface fixing method according to the present invention, first, step S1 is performed in which the ground is excavated to form the excavation hole H. At this time, the ground is excavated with the auger 10 of the excavator to form the excavation hole H at a predetermined depth (see FIG. 6A). The inner diameter of the excavation hole H is formed to be about 10 cm larger than the outer diameter of the pile P.

A step S2 is performed in which a bubble expanding main surface fixing liquid La is injected into the excavation hole H after the excavation hole H is formed on the ground. The bubble expanding main surface fixing liquid La injects the auger 10 of the excavator into the excavation hole H through the hollow portion provided in the auger 10 while drawing it out of the excavation hole H (see FIG. The foam expansion type main surface fixing liquid (La) includes water, cement, gypsum, hydrogen peroxide, and glycerin. The bubble expandable main surface fixing liquid La is prepared by forming a base material having a composition ratio (W / C) of water (W) to cement (C) of 0.85 to 1, The gypsum corresponding to 1% of the weight of the cement of the material is blended with the base material to prepare a first composition, 5% of hydrogen peroxide by weight of the first composition is blended with the first composition to prepare a second composition, 1% by weight of glycerin is added to the second composition.

The bubble expanding main surface fixing liquid La is injected into the excavation hole H and then the step S3 of inserting the pile P into the excavation hole H proceeds (see FIG. 6C). The pile P may be inserted into the excavation hole H and the pile P may be struck with a hammer. The bubble expanding main surface fixing liquid La is injected into the excavation hole H so as to fill the pore P to the ground entrance of the excavation hole H in a state where the pile P is inserted into the excavation hole H. [ It is preferable that the bubble expandable main surface fixing liquid La is filled from the bottom of the excavation hole H to the ground surface 0.9 to 1.1 m before the pile is inserted into the excavation hole H (see FIG.

The pile P is inserted into the drilling hole H and the step S4 of injecting the finish type main surface fixing liquid Lb into the drilling hole H is carried out (refer to FIG. 6E). The closed type main surface fixing liquid Lb is injected to the entrance of the excavation hole H, that is, to have the same liquid level as the ground surface. The closed type main surface fixing liquid Lb preferably contains water, cement, gypsum, hydrogen peroxide, glycerin, and sodium aluminate. As the embodiment of the closed type main surface fixing liquid Lb, the finished main surface fixing liquid Lb is prepared by forming a base material having a composition ratio (W / C) of water W and cement (W / C) of 0.85 to 1, Is added to the base material to prepare a first composition, 5% hydrogen peroxide by weight of the first composition is added to the first composition to prepare a second composition, and 1 part by weight of the second composition % Glycerin in a second composition, and mixing the second composition with 1% sodium aluminate by weight of the second composition. That is, sodium aluminate in a weight ratio of 1% by weight of the foam expandable main surface fixing liquid La is blended in a foam expansion type main surface fixing liquid La.

The first embodiment of the method for fixing the pile surface of the pile according to the present invention can be applied to the SIFI-free SIF method and the SDI method.

In the first embodiment, the bubble expanding main surface fixing liquid La is hardened and filled between the inner wall of the excavation hole H and the outer peripheral surface of the pile P to support the lower portion of the pile P, The fixing liquid Lb is hardened to support the upper portion of the pile P. When the bubble expandable main surface fixing liquid La is injected into the excavation hole H, water and cement which are the base materials of the bubble expandable main surface fixing liquid La are cured and the pile P inserted in the excavation hole H is supported And the swelling property is increased by the gypsum component, so that the pressing force for pressing the inner wall of the excavation hole H becomes large, the inner wall becomes denser, the drying shrinkage is minimized by the glycerin component, and the adhesive force is increased. Since the closed type main surface fixing liquid Lb further includes sodium aluminate in the bubble expanding main surface fixing liquid La, hardening of the base material of water and cement as the main surface fixing liquid is promoted, The bubble expanding type main surface fixing liquid La is prevented from expanding toward the entrance side of the excavation hole H by closing the entrance portion of the excavation hole H, .

FIG. 7 is a flowchart showing a second embodiment of a method for fixing a buried pile main surface according to the present invention. 8 is a view showing a second embodiment of a method for fixing a pile of a pile according to the present invention in a construction sequence.

As shown in FIGS. 7 and 8, in the second embodiment of the embedding pile main surface fixing method according to the present invention, the step S11 of digging the ground and forming the excavation hole H proceeds. At this time, the ground is excavated with the auger 10 of the excavator to form the excavation hole H with a predetermined depth (see FIG. 8A). The inner diameter of the excavation hole H is formed to be about 10 cm larger than the outer diameter of the pile P.

A step S12 of injecting a bubble expanding main surface fixing liquid La into the excavation hole H is performed after forming an excavation hole H in the ground. The bubble expanding main surface fixing liquid La injects the auger 10 of the excavator into the excavation hole H through the hollow portion provided in the auger 10 while drawing it out of the excavation hole H (see FIG. The foam expansion type main surface fixing liquid (La) includes water, cement, gypsum, hydrogen peroxide, and glycerin. The bubble expandable main surface fixing liquid La is prepared by forming a base material having a composition ratio (W / C) of water (W) to cement (C) of 0.85 to 1, The gypsum corresponding to 1% of the weight of the cement of the material is blended with the base material to prepare a first composition, 5% of hydrogen peroxide by weight of the first composition is blended with the first composition to prepare a second composition, 1% by weight of glycerin is added to the second composition.

A step S13 of inserting the pile P into the excavation hole H proceeds after the bubble expanding main surface fixing liquid La is injected into the excavation hole H (see FIG. 8C). The pile P may be inserted into the excavation hole H and the pile P may be struck with a hammer. The bubble expanding main surface fixing liquid La is injected into the excavation hole H so as to fill the pore P to the ground entrance of the excavation hole H in a state where the pile P is inserted into the excavation hole H. [ It is preferable that the bubble expandable main surface fixing liquid La is filled from the bottom of the excavation hole H to 0.4 to 0.6 m before the ground in a state where the pile P is inserted into the excavation hole H (see FIG. 8 d) .

The pile P is inserted into the drilling hole H and the step S14 of injecting the finish type main surface fixing liquid Lc into the drilling hole H is carried out (refer to FIG. 8E). The closed type main surface fixing liquid Lc is injected to the entrance of the excavation hole H, that is, to have the same liquid level as the ground surface. The closed type main surface fixing liquid Lc includes foamed urethane.

The second embodiment of the method for fixing the pile surface of the embedded pile according to the present invention can be applied to both the S-IPIP method and the SDI method.

In the second embodiment, the bubble expanding main surface fixing liquid La is hardened and filled between the inner wall of the excavation hole H and the outer peripheral surface of the pile P to support the lower portion of the pile P, And is filled between the inner wall of the excavation hole H and the outer peripheral surface of the pile P to support the upper portion of the pile P. When the bubble expandable main surface fixing liquid La is injected into the excavation hole H, water and cement which are the base materials of the bubble expandable main surface fixing liquid La are cured and the pile P inserted in the excavation hole H is supported And the swelling property is increased by the gypsum component, so that the pressing force for pressing the inner wall of the excavation hole H becomes large, the inner wall becomes denser, the drying shrinkage is minimized by the glycerin component, and the adhesive force is increased. The foamed urethane prevents the bubble expandable main surface fixing liquid La from expanding toward the entrance side of the excavation hole H by closing the entrance portion of the excavation hole H, ) To the inner wall of the excavation hole (H).

FIG. 9 is a sectional view showing a first embodiment of an embedded pile main surface fixing apparatus according to the present invention. As shown in Fig. 9, the first embodiment of the embedding pile main surface fixing apparatus according to the present invention includes a first main surface fixed and settable member 100 and a second main surface fixed and settable member 200. As shown in Fig.

The first main surface fixed-setting material 100 is injected between the inner wall of the excavation hole H excavated on the ground and the outer surface of the pile P inserted in the excavation hole H, (H). The first main surface fixed and settable material 100 is located up to a certain height from the bottom surface of the excavation hole H and firmly supports the pile P on the ground. It is preferable that the inner diameter of the excavation hole H is excavated about 10 cm larger than the outer diameter of the pile P. The pile (P) can be a steel pipe pile, a piechite pile, a composite pile, and the like. The bubble expandable main surface fixing liquid La preferably contains water, cement, gypsum, hydrogen peroxide, and glycerin. The bubble expandable main surface fixing liquid La is prepared by forming a base material having a composition ratio (W / C) of water (W) to cement (C) of 0.85 to 1, The gypsum corresponding to 1% of the weight of the cement of the material is blended with the base material to prepare a first composition, 5% of hydrogen peroxide by weight of the first composition is blended with the first composition to prepare a second composition, 1% by weight of glycerin is added to the second composition. It is preferable that the bubble expandable main surface fixing liquid La is filled from the bottom of the excavation hole H to 0.9 to 1.1 m before the ground surface. When the bubble expandable main surface fixing liquid La is injected into the excavation hole H, water and cement which are the base materials of the bubble expandable main surface fixing liquid La are cured and the pile P inserted in the excavation hole H is supported And the swelling property is increased by the gypsum component, so that the pressing force for pressing the inner wall of the excavation hole H becomes large, the inner wall becomes denser, the drying shrinkage is minimized by the glycerin component, and the adhesive force is increased. As described above, the first main surface fixed and settable material 100 is hardened while pressing the inner wall of the excavation hole H to tighten and increase the adhesive force to support the lower portion of the pile P.

The second main surface fixed and settable material 200 is sandwiched between the inner wall of the excavation hole H and the outer surface of the pile P inserted in the excavation hole H as an embodiment of the second main surface fixed- And the fixer Lb (Lc) is injected and hardened at the upper part of the excavation hole (H). The closed type main surface fixing liquid Lb preferably includes water, cement, gypsum, hydrogen peroxide, glycerin, and sodium aluminate. As the embodiment of the closed type main surface fixing liquid Lb, the finished main surface fixing liquid Lb is prepared by forming a base material having a composition ratio (W / C) of water W and cement (W / C) of 0.85 to 1, Is added to the base material to prepare a first composition, 5% hydrogen peroxide by weight of the first composition is added to the first composition to prepare a second composition, and 1 part by weight of the second composition % Glycerin in a second composition, and mixing the second composition with 1% sodium aluminate by weight of the second composition. That is, sodium aluminate in a weight ratio of 1% by weight of the foam expandable main surface fixing liquid La is blended in a foam expansion type main surface fixing liquid La. The closed type main fixation fluid (Lb) is filled up to 0.9 ~ 1.1m from the ground. Since the closed type main surface fixing liquid Lb further contains sodium aluminate in the bubble expanding main surface fixing liquid La, the hardening of the base material of the water and the cement as the main surface fixing liquid is promoted, The upper portion of the excavation hole H is closed to seal the bubble expandable main surface fixing liquid La to the entrance side of the excavation hole H by closing the entrance portion of the excavation hole H . The finishing main surface fixing liquid Lb is hardened and filled between the inner wall of the excavation hole H and the outer peripheral surface of the pile P to support the upper portion of the pile P.

As shown in FIG. 10, the second main surface fixed and settable material 200 'has an inner wall of the excavation hole H and an inner wall of the pile P inserted into the excavation hole H, The main surface fixing liquid Lc is injected between the outer surfaces and cured at the upper portion of the excavation hole H and the main surface fixing liquid Lc is the cured foam urethane. At this time, it is preferable that the bubble expanding main surface fixing liquid La is filled from the bottom of the excavation hole H to 0.4 to 0.6 m before the ground, and the finish type main surface fixing liquid Lc is filled to 0.4 to 0.6 m from the ground. The foamed urethane is hardened between the upper outer circumferential surface of the pile P and the upper inner wall of the excavation hole H to support the upper portion of the pile P. The foamed urethane prevents the bubble expandable main surface fixing liquid La from expanding toward the entrance side of the excavation hole H by closing the entrance portion of the excavation hole H, ) To the inner wall of the excavation hole (H).

Hereinafter, the operation and effect of the method for fixing a pile surface of a pile according to the present invention and its apparatus will be described.

The present invention is characterized in that a bubble expanding main surface fixing liquid La is injected between an outer peripheral surface of a pile P and an inner wall of an excavation hole H in a state where a pile P is inserted into the excavation hole H, The lower portion of the pile P is supported by the fixed hardening material 100 and the finishing main surface fixing fluid Lb is injected between the outer peripheral surface of the pile P and the inner wall of the drilling hole H to form the hardened second And the upper portion of the pile P is supported by the main surface hardening materials 200 and 200 '. As a result, the pile P inserted in the excavation hole H is firmly supported.

The present invention is also directed to a method of manufacturing a pneumatic tire, which includes the steps of injecting a bubble expanding main surface fixing liquid La into a drilling hole H in which a pile P is inserted and curing water and cement as base materials of the bubble expanding main surface anchor La, (P) inserted in the hole (H), and the expandability is increased by the gypsum component, so that the pressing force for pressing the inner wall of the excavation hole (H) becomes larger and the inner wall becomes denser and the drying shrinkage is minimized by the glycerin component The adhesion strength is increased, so that the surrounding ground of the pile P is strengthened and the adhesion strength of the pile P and the surrounding is increased, so that the supporting force of the pile P is increased and the horizontal resistance is increased.

In addition, the present invention is characterized in that the finishing main surface fixing liquid Lb is hardened faster than the bubble expanding main surface fixing liquid La injected into the drilling hole H into which the pile P is inserted, H of the bubble expandable main surface fixing liquid La is prevented from expanding toward the entrance side of the excavation hole H and the bubble expandable main surface fixing liquid La is expanded to the inner wall of the excavation hole H So that the inner wall of the excavation hole H is effectively pressurized, effectively tightening the periphery of the excavation hole H. In addition, since the finish type main surface fixing liquid Lb is hardened faster than the bubble expanding main surface fixing liquid La injected into the drilling hole H into which the pile P is inserted, It is possible to prevent leakage of the bubble expanding main surface fixing liquid La through the entrance of the excavation hole H as well as to minimize the water phenomenon and minimize the loss of the bubble expanding main surface fixing liquid La Thereby reducing the injection amount.

100; A first main surface fixed set material 200; The second main surface fixed set material
La; Bubble expandable main surface fixing liquids Lb and Lc; Finishing type

Claims (10)

Excavating the ground to form excavation holes;
Injecting a bubble expanding main surface fixing solution into the drilling hole;
Inserting the pile into a drilling hole;
And injecting a closed type main surface fixing liquid into the excavation hole,
The bubble expandable main surface fixing liquid
The bubble expandable main surface fixing liquid includes water, cement, gypsum, hydrogen peroxide, and glycerin,
The method according to any one of claims 1 to 3, wherein the closed type main surface fixing solution comprises water, cement, gypsum, hydrogen peroxide, glycerin, and sodium aluminate. The method according to claim 1, wherein the first compounding ingredient (W / C) having a composition ratio (W / C) of water (W) to cement (C) of 0.85 to 1 is mixed with gypsum corresponding to 1% Wherein the third combination is a combination of 5% hydrogen peroxide and 5% glycerin in a weight ratio of the third combination. Excavating the ground to form excavation holes;
Injecting a bubble expanding main surface fixing solution into the drilling hole;
Inserting the pile into a drilling hole;
And injecting a closed type main surface fixing liquid into the excavation hole,
The bubble expandable main surface fixing liquid
The bubble expandable main surface fixing liquid includes water, cement, gypsum, hydrogen peroxide, and glycerin,
Wherein the closed type main surface fixing liquid comprises foamed urethane. 4. The method according to claim 3, wherein a second mixture having a composition ratio (W / C) of water (W) to cement (C) of 0.85 to 1 is mixed with gypsum corresponding to 1% Wherein the third combination is a combination of 5% hydrogen peroxide and 5% glycerin in a weight ratio of the third combination. A first main surface fixed hardening material hardened at a lower portion of the drilling hole by injecting a bubble expanding main surface fixing solution between the inner wall of the drilling hole drilled in the ground and the outer surface of the pile inserted into the drilling hole; And
And a second main surface hardening material hardened at the upper portion of the drilling hole by injecting a main surface fixing liquid into the gap between the inner wall of the drilling hole and the outer surface of the pile inserted into the drilling hole,
Wherein the bubble expanding main surface fixing liquid comprises water, cement, gypsum, hydrogen peroxide, and glycerin. 6. The method according to claim 5, wherein the first mixture containing the water (W) and the cement (C) in a ratio (W / C) of 0.85 to 1 is mixed with a second mixture containing 1% Characterized in that a third combination containing 5% of hydrogen peroxide by weight of the formulation is blended with 1% of glycerin by weight of the third combination. [7] The apparatus according to claim 5, wherein the closed type main surface fixing solution further comprises sodium aluminate in the bubble expanding main surface fixing solution. [8] The apparatus according to claim 7, wherein the bubble expanding main surface fixing liquid is filled from the bottom of the excavation hole to a depth of 0.9 to 1.1 m before the ground, and the finish type main surface fixing liquid is filled to 0.9 to 1.1 m from the ground. [7] The apparatus according to claim 5, wherein the closed type main surface fixing liquid comprises foamed urethane. The apparatus according to claim 9, wherein the bubble expandable main surface fixing liquid is filled from the bottom of the drilling hole to a depth of 0.4 to 0.6 m before the ground, and the finish type main surface fixing liquid is filled to 0.4 to 0.6 m from the ground.
KR1020150146746A 2015-10-21 2015-10-21 Method for supporting an augered pile and apparatus thereof KR101816006B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110965549A (en) * 2019-12-17 2020-04-07 广东省水利水电第三工程局有限公司 Cast-in-situ bored pile construction method
CN111042116A (en) * 2019-12-31 2020-04-21 福建建中建设科技有限责任公司 Karst cave stratum pile foundation construction method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2533853B2 (en) * 1986-05-14 1996-09-11 旭化成工業株式会社 Pile construction method
JP2001081770A (en) * 1999-09-16 2001-03-27 Toyo Constr Co Ltd Pile foundation work

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110965549A (en) * 2019-12-17 2020-04-07 广东省水利水电第三工程局有限公司 Cast-in-situ bored pile construction method
CN110965549B (en) * 2019-12-17 2020-11-24 广东省水利水电第三工程局有限公司 Cast-in-situ bored pile construction method
CN111042116A (en) * 2019-12-31 2020-04-21 福建建中建设科技有限责任公司 Karst cave stratum pile foundation construction method

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