KR20120130589A - method for constructing pile using reaction force frame reinforced upper part of pillar in constructed building - Google Patents

method for constructing pile using reaction force frame reinforced upper part of pillar in constructed building Download PDF

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Publication number
KR20120130589A
KR20120130589A KR1020110048640A KR20110048640A KR20120130589A KR 20120130589 A KR20120130589 A KR 20120130589A KR 1020110048640 A KR1020110048640 A KR 1020110048640A KR 20110048640 A KR20110048640 A KR 20110048640A KR 20120130589 A KR20120130589 A KR 20120130589A
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KR
South Korea
Prior art keywords
pile
reinforcement
existing building
reinforcement pile
column
Prior art date
Application number
KR1020110048640A
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Korean (ko)
Inventor
변항용
Original Assignee
주식회사고려이엔시
변항용
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Publication date
Application filed by 주식회사고려이엔시, 변항용 filed Critical 주식회사고려이엔시
Priority to KR1020110048640A priority Critical patent/KR20120130589A/en
Publication of KR20120130589A publication Critical patent/KR20120130589A/en

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/04Guide devices; Guide frames
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/48Foundations inserted underneath existing buildings or constructions
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/20Placing by pressure or pulling power
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00Production methods
    • E02D2250/0023Cast, i.e. in situ or in a mold or other formwork

Abstract

The present invention relates to a pile foundation construction method using a reaction frame installed by reinforcing the upper part of an existing building, and more specifically, to install the reaction frame by reinforcing the upper part of the existing building column and press-fit the reinforcement pile to operate as a hydraulic jack. Since the press-fitting reinforcement pile by using the device relates to the pile foundation construction method that can safely and vertically expand the basement without generating vibration, noise and dust.
The present invention comprises the steps of installing a reaction frame in the upper column of the existing building; Forming a foundation guide wall at a lower portion of the existing building to facilitate the press fitting of the reinforcement pile; Arranging a reinforcement pile using a reinforcement pile indentation apparatus; It provides a pile foundation construction method comprising the; step of pressing the reinforcement pile using the hydraulic jack of the reinforcement pile indentation device.

Description

Method for constructing pile using reaction force frame reinforced upper part of pillar in constructed building}
The present invention relates to a pile foundation construction method using a reaction frame installed by reinforcing a column top of an existing building, and more particularly, to install a reaction frame by reinforcing the structure of the column top of an existing building and to operate a hydraulic jack. Since the press-fit device is used to press-fit the reinforcement pile, it is related to the pile foundation construction method to allow the basement extension and the vertical extension safely without generating vibration, noise and dust at the same time.
In general, most domestic buildings are made of reinforced concrete structures. The physical life of the reinforced concrete structure is at least 100 years, and the tax law of the actual law stipulates that the life of the building made of the reinforced concrete structure is 60 years. However, due to the development of information technology and the increase of vehicles, there is a need for remodeling. Therefore, in the case of a reinforced concrete structure, there is no problem in terms of strength, but interest in remodeling has been amplified even before 20 years due to changes in other external environmental requirements.
In addition, as the society develops, it is difficult to secure land for new construction, and the redevelopment of dismantling existing buildings and constructing new ones has strict requirements and complicated procedures.
In addition, even considering the aspects of resource recycling, remodeling existing buildings and reusing them is the best option to minimize environmental degradation rather than building new buildings. As such, remodeling has emerged as an alternative to create added value for buildings due to environmental issues.
Therefore, in order to make such a remodeling, there is a demand for a method of securing a living space by increasing the parking space by expanding the basement and vertically expanding the ground without dismantling existing buildings.
However, when the basement or vertical extension as well as the use of additional equipment is added to the base as the above, as the working load increases, existing foundations or columns not designed on the premise of remodeling have structural problems.
Therefore, the present invention has been devised to solve the above problems, when the upper structure is insufficient strength of the upper structure can not be used directly as a reaction member to install the reaction frame on the top of the column of the existing building to strengthen the structure The purpose is to provide a pile foundation construction method by strengthening the structure by installing a reaction frame on the top of the column of the existing building that has been improved.
In addition, the present invention has an object to provide a pile foundation construction method to reinforce the top of the column so as to safely support the existing building when underground expansion of the existing building to reinforce the column with a reaction frame as described above. .
In addition, the present invention reinforces the upper part of the pillar by the reaction frame as described above to improve the strength, and install the reaction frame on the column to be able to safely support even the increased load due to the expansion in the vertical expansion of existing buildings to reinforce the structure The purpose is to provide a pile foundation construction method.
In addition, the present invention reinforces the upper part of the column with a reaction frame as described above to improve the strength, pile foundation reinforced with a structure by installing a reaction frame on the column to be able to safely support even the increased load due to the expansion of existing buildings The purpose is to provide a construction method.
In addition, the present invention is to construct a pile foundation using a reinforcement pile indentation device having a hydraulic jack without excavating the basement, so it does not generate noise and vibration and also does not generate construction wastes due to excavation, thereby realizing an environment-friendly working environment. The purpose of the pile foundation construction method to strengthen the structure by installing a reaction frame in the upper column.
In addition, the present invention is to construct the pile foundation by using the reinforcement pile indentation device having a hydraulic jack as described above, so that the reaction force frame on the column to improve the construction precision by working while monitoring the hydraulic gauge attached to the hydraulic jack in real time The purpose is to provide a pile foundation construction method reinforced by the installation.
In addition, the present invention is formed between the foundation guide wall and the reinforcement pile 4mm to 6mm clearance so that the vertically secured reinforcement pile during work and to prevent falling and to prevent the reinforcement pile is stuck in the foundation guide wall stuck The purpose is to provide a pile foundation construction method reinforced structure by installing a reaction frame in the upper portion.
The present invention comprises the steps of installing a reaction frame in the upper column of the existing building; Forming a foundation guide wall at a lower portion of the existing building to facilitate the press fitting of the reinforcement pile; Arranging a reinforcement pile using a reinforcement pile indentation apparatus; It provides a pile foundation construction method comprising the; step of pressing the reinforcement pile using the hydraulic jack of the reinforcement pile indentation device.
Here, the step of installing the reaction frame on the upper pillar of the existing building is a process of drilling the hole in the shear direction on the upper part of the existing building, the process of inserting reinforcing bars into the hole punched in the shear direction, and inserted into the hole It is preferable that the process consists of fixing the reinforcing bar to the chemical anchor.
In addition, the forming of the guide wall in the lower portion of the existing building, it is preferable to form a core around the pillar bottom.
In addition, the inner diameter of the core formed in the lower portion of the existing building is preferably formed to be 4mm to 6mm larger than the outer diameter of the reinforcement pile.
In addition, when there is no concrete in the lower part of the existing building, it is preferable to form a core by pouring concrete around the reinforcement pile in a state in which the reinforcement pile is surrounded by a coating material having a thickness of 4 mm to 6 mm.
In addition, when the construction of the pile foundation is preferably installed while monitoring the hydraulic gauge installed in the hydraulic jack of the reinforcement pile indentation device in real time.
As described above, the pile foundation construction method according to the present invention improves the load capacity by installing a reaction frame on the upper part of the pillar of the existing building when the upper structure is insufficient in the strength of the upper structure and thus cannot be directly used as a reaction force member.
In addition, the pile foundation construction method according to the present invention can improve the strength by reinforcing the upper portion of the column with a reaction frame as described above, it can safely support the existing building when underground expansion of the existing building.
In addition, since the pile foundation construction method according to the present invention improves the strength by reinforcing the upper portion of the column with a reaction frame as described above it can safely support the increased load due to the expansion of the vertical expansion of the existing building.
In addition, since the pile foundation construction method according to the present invention to improve the strength by reinforcing the upper portion of the column with a reaction frame as described above it can safely support the increased load due to the expansion of the existing building equipment.
In addition, the pile foundation construction method according to the present invention does not excavate the basement and constructs the pile foundation using a reinforced pile press-fitting device having a hydraulic jack, so that noise and vibration do not occur and construction wastes due to excavation do not generate environmentally friendly work. You can implement the environment.
In addition, since the pile foundation construction method according to the present invention constructs the pile foundation using the reinforcement pile indentation device having a hydraulic jack as described above, it is possible to improve the construction accuracy by working while monitoring the hydraulic gauge attached to the hydraulic jack in real time.
In addition, the pile foundation construction method according to the present invention because the clearance between the wall and the reinforcement pile is formed between 4mm to 6mm to ensure the verticality of the reinforcement pile during work and to prevent falling and to prevent the reinforcement pile is stuck to the foundation guide wall can do.
1 is a view showing a state in which the reaction frame is installed in accordance with the pile foundation construction method of the present invention.
Figure 2 is a view showing a state in which the reinforcing bar is inserted into the hole formed in the upper portion of the pillar foundation construction method of the present invention.
3 is a view showing the step of placing the reinforcement pile indentation apparatus according to the pile foundation construction method of the present invention.
4 is a view showing a state in which the filler pipe is installed in the reinforcement pile indentation apparatus according to the pile foundation construction method of the present invention.
5 is a view showing a state in which the piston rod of the hydraulic jack is extended using the reinforcement pile indentation apparatus according to the pile foundation construction method of the present invention.
Hereinafter, the pile foundation construction method according to the present invention according to an embodiment of the present invention will be described with reference to the accompanying drawings.
The pile foundation construction method according to an embodiment of the present invention is to install the pile foundation in a state in which the structure is reinforced by installing a reaction frame 10 on the pillar (P), as shown in Figure 1 to 5, Installing a reaction frame 10 on the upper portion of the column 10 of the existing building, and forming a guide wall to facilitate the press-fit of the reinforcement pile 20 in the lower portion of the existing building, and reinforcement And arranging the reinforcement pile 20 using the pile press-fitting device 30 and press-fitting the reinforcement pile 20 using the hydraulic jack 32 of the reinforcing pile press-fitting device 30.
First, the step of installing the reaction frame 10 on the upper part of the existing building 10 is a process of drilling the hole 12 in the shear direction in the upper part of the existing building pillar P, and the hole 12 drilled in the shear direction. ) And inserting the reinforcing bar 14 into the hole 12, and fixing the reinforcing bar 14 inserted into the hole 12 with a chemical anchor. The hole 12 drilled in the upper portion of the pillar P of the existing building 12 is drilled toward the center of the column horizontally in the shear direction of the pillar on the top of the pillar. The hole 12 is drilled using a drill bit. At this time, the hole 12 should be formed to be symmetrical about the pillar P in order to prevent the concentration of stress on one side of the pillar P. The process of inserting the reinforcing bar 14 is a process of inserting the reinforcing bar 12 into the hole 12 formed by the drill bit to insert the reinforcing bar cut to the same length of the same material. Of course, since the holes formed in the pillar 12 have the same depth, the length of the rebar exposed in the radial direction of the pillar P is also the same. In the process of fixing the reinforcing bar 14, the reinforcing bar 14 is inserted into the hole 12, and then chemical is injected to allow the reinforcing bar 14 to be fixed inside the hole 12.
Next, the step of forming the foundation guide wall to facilitate the press-fit of the reinforcement pile 20 in the lower part of the existing building is to form a foundation guide wall that can press-in the reinforcement pile 20 at a desired angle (20). If the center is not accurately caught when indenting the core, there is a possibility that the reinforcing pile 20 may deviate from the desired angle when the reinforcing pile 20 is press-fitted. 40 is formed. The core 40 is formed by drilling concrete around the lower portion of the pillar (P). The inner diameter of the core 40 is preferably formed to be 4mm to 6mm larger than the outer diameter of the reinforcing pile 20. If the difference between the inner diameter of the core 40 and the outer diameter of the reinforcing pile 20 is less than 4mm, the reinforcing pile 20 is fixed to the core 40, the inner diameter of the core 40 and the outer diameter of the reinforcing pile 20 If the difference is 6mm or more, the reinforcement pile 20 is loosened, and there is a risk of leaving the desired angle. Therefore, the inner diameter of the core 40 is preferably formed to be 4mm to 6mm larger than the outer diameter of the reinforcing pile 20.
In addition, when concrete is not formed in the lower part of the existing building, the concrete is formed by pouring concrete around the reinforcement pile 20 in a state in which the reinforcement pile 20 is surrounded by a coating material having a thickness of 4 mm to 6 mm. It is preferable.
Next, the step of arranging the reinforcement pile 20 using the reinforcement pile indentation apparatus 30 moves the reinforcement pile indentation apparatus 30 to the position to install the reinforcement pile 20 using the forklift 50. At this time, the reinforcing pile press-fitting device 30 is provided with a hydraulic jack 32 extending downwards the piston rod 34, the operator can check the pressure gauge to direct the load applied to the hydraulic jack 30 with the naked eye. It is installed.
Next, the step of pressing the reinforcement pile 20 by using the reinforcement pile press-fitting device 30 and the hydraulic jack 32 may include reinforcing piles (reinforcement piles) in the core 40 located under the hydraulic jack 32 of the reinforcement pile press-fitting device 30. 20) Install. When the reinforcement pile 20 is installed, the piston rod 34 of the hydraulic jack 32 is extended downward so that the reinforcement pile 20 is press-fitted to the lower portion of the pillar P. At this time, the pressure applied to the hydraulic jack 32 is gradually raised while visually monitoring the pressure gauge indicating the pressure of the hydraulic jack 32. As described above, when the piston rod 34 of the hydraulic jack 32 is extended and the reinforcement pile 20 descends, the reinforcement pile 20 is installed again, and then the bottom and the upper end of the reinforcement pile 20 already press-fitted are fixed by welding. Let's do it. When the reinforcement piles 20 are fixed, the piston rod 34 of the hydraulic jack 32 is extended so that the reinforcement pile 30 welded to the lower portion is press-fitted. By repeatedly indenting the beam pile 20 as described above to construct the pile foundation.
10: reaction frame 20: reinforcement pile
30: reinforcement pile indentation device 40: core
50: forklift P: pillar

Claims (6)

  1. Installing a reaction frame on a column of an existing building;
    Forming a foundation guide wall at a lower portion of the existing building to facilitate the press fitting of the reinforcement pile;
    Arranging a reinforcement pile using a reinforcement pile indentation apparatus;
    A pile foundation construction method comprising the; step of pressing the reinforcement pile using the hydraulic jack of the reinforcement pile indentation device.
  2. The method according to claim 1,
    The step of installing a reaction frame in the upper column of the existing building is a process of drilling a hole in the shear direction in the upper part of the existing building, the process of inserting reinforcing bars into the hole punched in the shear direction, the reinforcement inserted into the hole Pile foundation construction method characterized in that the process consisting of fixing the chemical anchor.
  3. The method according to claim 1 or 2,
    Forming the foundation guide wall in the lower portion of the existing building pile foundation method, characterized in that to form a core around the lower portion of the column.
  4. The method according to claim 3,
    The inner diameter of the core formed in the lower portion of the existing building pile foundation method, characterized in that formed 4mm to 6mm larger than the outer diameter of the reinforcement pile.
  5. The method according to claim 3,
    If there is no concrete in the lower part of the existing building pile foundation construction method characterized in that the core is formed by curing after pouring concrete around the reinforcement pile in a state surrounding the reinforcement pile with a coating material of 4mm to 6mm thick.
  6. The method according to any one of claims 1 to 5,
    Pile foundation construction method characterized in that the construction while monitoring the hydraulic gauge installed in the hydraulic jack of the reinforcement pile indentation device in real time.
KR1020110048640A 2011-05-23 2011-05-23 method for constructing pile using reaction force frame reinforced upper part of pillar in constructed building KR20120130589A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103306285A (en) * 2013-06-09 2013-09-18 中国十七冶集团有限公司 Anchored and jacked pile construction system for increasing foundation bearing capacity
CN104746476A (en) * 2013-12-30 2015-07-01 上海中交水运设计研究有限公司 Wharf additionally provided with batter pile on rear edge and method for reinforcing wharf rear edge by applying batter pile
CN107044123A (en) * 2017-03-17 2017-08-15 岩土科技股份有限公司 A kind of construction static pressed pile device and the method using the device piling
CN110904966A (en) * 2019-11-29 2020-03-24 云南建研建设工程检测鉴定有限公司 Balance-adjustable static pressure pile construction device and foundation pile static load test method
KR102134927B1 (en) * 2019-07-04 2020-07-16 한국건설기술연구원 Pre-loading apparatus for foundation pile which can control pre-loading level and foundation reinforcing method therewith
KR102166168B1 (en) 2019-05-20 2020-10-15 신경선 Foundation pile unit and manufacturing method for the same, pile assembly of foundation structure and construction method for the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103306285A (en) * 2013-06-09 2013-09-18 中国十七冶集团有限公司 Anchored and jacked pile construction system for increasing foundation bearing capacity
CN104746476A (en) * 2013-12-30 2015-07-01 上海中交水运设计研究有限公司 Wharf additionally provided with batter pile on rear edge and method for reinforcing wharf rear edge by applying batter pile
CN107044123A (en) * 2017-03-17 2017-08-15 岩土科技股份有限公司 A kind of construction static pressed pile device and the method using the device piling
CN107044123B (en) * 2017-03-17 2019-02-01 岩土科技股份有限公司 A kind of construction static pressed pile device and the method using the device piling
KR102166168B1 (en) 2019-05-20 2020-10-15 신경선 Foundation pile unit and manufacturing method for the same, pile assembly of foundation structure and construction method for the same
KR102134927B1 (en) * 2019-07-04 2020-07-16 한국건설기술연구원 Pre-loading apparatus for foundation pile which can control pre-loading level and foundation reinforcing method therewith
WO2021002534A1 (en) * 2019-07-04 2021-01-07 한국건설기술연구원 Preloading device capable of controlling load and foundation reinforcement method using same
CN110904966A (en) * 2019-11-29 2020-03-24 云南建研建设工程检测鉴定有限公司 Balance-adjustable static pressure pile construction device and foundation pile static load test method

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