WO2020013543A1 - Structure de renfort de pieu pour une résistance aux tremblements de terre et son procédé de construction - Google Patents

Structure de renfort de pieu pour une résistance aux tremblements de terre et son procédé de construction Download PDF

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Publication number
WO2020013543A1
WO2020013543A1 PCT/KR2019/008341 KR2019008341W WO2020013543A1 WO 2020013543 A1 WO2020013543 A1 WO 2020013543A1 KR 2019008341 W KR2019008341 W KR 2019008341W WO 2020013543 A1 WO2020013543 A1 WO 2020013543A1
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WO
WIPO (PCT)
Prior art keywords
pile
ground
hinge
seismic
inclined member
Prior art date
Application number
PCT/KR2019/008341
Other languages
English (en)
Korean (ko)
Inventor
황운식
Original Assignee
유구이앤씨(주)
황운식
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 유구이앤씨(주), 황운식 filed Critical 유구이앤씨(주)
Publication of WO2020013543A1 publication Critical patent/WO2020013543A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/54—Piles with prefabricated supports or anchoring parts; Anchoring piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/34—Foundations for sinking or earthquake territories
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/15—Geometrical or physical properties including at least a hinge
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes
    • E02D2200/1671—Shapes helical or spiral
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/30—Miscellaneous comprising anchoring details

Definitions

  • the present invention relates to an earthquake reinforcing pile reinforcing structure and its construction method, and more particularly, to an earthquake reinforcing pile reinforcing structure and its construction method by providing an inclined member between a pile and an upper structure supported by the pile.
  • a method of constructing a basic structure including a cross bar which is disclosed in Korean Patent Application Publication No. 10-1738556, filed by the applicant, is disclosed.
  • This prior art is a method for constructing a foundation structure by installing the support pile 100 and the foundation slab (S) coupled to the upper support pile construction.
  • each support pile is three coupling bands (combined from above to the first coupling band 110 to be spaced apart from each other by a predetermined interval) , A second coupling band 120, and a third coupling band 130.), A first crossbar 200 having one end hinged to the second coupling band and the other end coupled to the reinforcing bars of the foundation slab, and And a second crossbar 300 having one end hinged to the third coupling band and the other end coupled to the first coupling band of the neighboring support pile, wherein the first crossbar hinged to the second coupling band.
  • Reinforcing bar for reinforcing the reinforcing bar for the base slab on the plurality of the support pile, the first crossbar and the second crossbar is adjusted so as not to interfere the reinforcement of the reinforcement by the hinge rotation;
  • the first crossbar is hinged so that the other end of the first crossbar moves to the reinforcing bar of the foundation slab to engage with the reinforcing bar of the foundation slab, and the second crossbar is hinged to rotate the other end of the second crossbar to neighbor.
  • a method of constructing a foundation structure including a crossbar comprising a support pile reinforcing step of reinforcing an upper portion of a plurality of the support piles in combination with the first coupling band of the support pile.
  • the purpose is to increase the bearing capacity through the installation of the internal crossbar and the additional connection of the support pile and the foundation slab.
  • the prior art is that the installation of the first crossbar 200 and the second crossbar 300 is possible only when the lower ground of the foundation slab (S) is removed, the vertical and horizontal support force of the ground for the upper structure is lowered There is a problem.
  • the first crossbar 200 and the second crossbar 300 are combined, even if the ground is filled with dirt, compacting is not easy due to the complicated first crossbar 200 and the second crossbar 300.
  • the first coupling band 110, the second coupling band 120, and the third coupling band 130, to which the first crossbar 200 and the second crossbar 300 are coupled are exposed to the ground and corrode, thereby prolonging the corrosion. This can cause structural problems.
  • Patent Document 1 Republic of Korea Registered Patent Publication 10-1738556
  • the present invention is to solve the above problems, without damaging the bearing capacity of the lower ground of the upper structure at all, easy installation, and at the same time corrosion is prevented pile reinforcement structure that can ensure structural stability in the long term and The construction method will be provided.
  • Seismic pile reinforcing structure according to an embodiment of the present invention, the upper structure is installed on the ground; Piles inserted into the ground vertically to support the lower side of the upper structure; A lower portion hinged to the side of the pile; and the inclined members are rotated about the hinge as the side of the inclined member is excavated after the pile is inserted into the ground to the lower side of the upper structure
  • By supporting the inclined may be characterized in that the resistance to earthquakes is increased.
  • the inclined member may be characterized in that it is inserted into the ground in the state inserted into the groove.
  • the upper structure is installed on the ground; Piles inserted into the ground vertically to support the lower side of the upper structure; A pile reinforcing member covering an upper portion of the pile; And an inclined member hinged to a side of the pile reinforcing member, wherein the inclined member is rotated about the hinge while the side of the inclined member is excavated after the pile is inserted into the ground to form the upper structure.
  • By supporting the lower side of the inclined may be characterized in that the resistance to earthquakes is increased.
  • the inclined member may be characterized in that it is inserted into the ground in the state inserted into the groove.
  • a grouting injection path extending from the upper side to the lower side of the inclined member is provided, and after the rotation of the inclined member may be characterized in that the grout is injected through the grouting injection path is grouted around the hinge.
  • the grouting injection path may be a passage formed in the interior of the inclined member, or a passage inside the injection hose coupled to the inclined member.
  • a sealing member coupled to the pile and the inclined member of the upper and lower sides of the hinge to seal the hinge, the grout is filled inside the sealing member through the grouting injection passage to completely surround the hinge It may be characterized by.
  • the excavation of the side of the inclined member may be performed by inserting a screw excavator vertically to the hinge position on the side of the inclined members by rotating the screw excavator inclined about its lower end. .
  • the inclined members may further include a second inclined members spaced apart at a predetermined interval to the hinge side coupled to the side of the pile.
  • Seismic pile reinforcing structure construction method the step of inserting the pile hinged to the ground pile; Rotating the inclined members about a hinge while excavating the side surfaces of the inclined members; Constructing the upper structure to be coupled to the upper side of the pile and the inclined members;
  • the step of rotating the inclined members about the hinge is to insert the screw excavator vertically to the hinge position on the side surfaces of the inclined members and rotate the screw excavator inclined about its lower end. It may be characterized by performing by rotating the inclined member.
  • both sides of the screw excavator may be provided with a pair of guides installed side by side with the screw excavator is rotated may be characterized in that to prevent the inflow of soil on both sides of the screw excavator.
  • the present invention does not impair the bearing capacity of the bottom of the upper structure at all, it is easy to install, and at the same time corrosion is prevented to ensure structural stability in the long term.
  • Figure 2 is a perspective view showing the seismic pile reinforcing structure according to an example of the present invention installed on the lower side of the upper structure.
  • Figure 3a is a view showing a state in which the inclined member is coupled to the pile and the groove not formed pile in the seismic pile reinforcement structure according to an embodiment of the present invention, and the figure showing the appearance of the various hinges.
  • 3B is a view showing a state in which the inclined member is unfolded in the seismic pile reinforcing structure according to an example of the present invention.
  • Figure 3c, 3d is a view showing the injection hose coupled to the inclined member in the seismic pile reinforcement structure according to an example of the present invention.
  • 3E and 3F are views showing the reduced diameter of the lower portion of the pile in the seismic pile reinforcing structure according to an exemplary embodiment of the present invention.
  • 3G is a view showing a pile reinforcing member having a groove formed or not formed in an upper portion of a pile in a seismic pile reinforcing structure according to an exemplary embodiment of the present invention.
  • Figure 3h is a view showing a state in which the inclined member is unfolded in the seismic pile reinforcement structure according to an embodiment of the present invention.
  • 3i and 3j are views showing the unfolded state in which the second inclined member is installed on the lower side of the inclined member in the seismic pile reinforcing structure according to the exemplary embodiment of the present invention.
  • FIG. 4 is a view showing a state in which a sealing member is installed in the seismic pile reinforcing structure according to an example of the present invention.
  • 5A is a side view and a cross-sectional view of a screw excavator in a seismic pile reinforcing structure according to an example of the present invention.
  • 5B is a view showing a state in which the inclined member is inclined construction in the seismic pile reinforcing structure according to an example of the present invention.
  • first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being “connected”, “coupled” or “connected” to another component, that component may be directly connected or connected to that other component, but there is another component between each component. May be “connected”, “coupled” or “connected”.
  • the upper structure 10 is installed on the ground; Pile 20 is inserted into the ground vertically to support the lower side of the upper structure (10); And a lower portion of the inclined members 30 hinged to the side of the pile 20.
  • the upper structure 10 may be not only a large and heavy structure such as a dam, a bridge, an apartment, a building, but also a small house.
  • the piles 20 may be inserted into the ground to support the upper structure 10.
  • the piles 20 may be inserted after excavating the ground with an auger or the like, or may be additionally driven after being inserted by digging with an auger. Also, sometimes the file 20 can be inserted only by driving.
  • the piles 20 may support a horizontal force, such as an earthquake load, that is, a shear force, along with a vertical force, such as the weight of a structure.
  • the pile 20 may be any of a steel pipe pile, a reinforced concrete pile, a prestressed concrete (PSC) pile, and the like.
  • the cross section of the pile 20 may be circular, square, H-shaped, or the like.
  • the inclined members 30 may be hinged to the side of the pile 20.
  • the inclined members 30 may be hinged to a lower portion by a predetermined distance from the upper side of the pile 20. After the inclined members 30 are inserted into the ground, the side of the inclined member 30 is excavated to rotate around the hinge to support the lower side of the upper structure 10 to increase the resistance to earthquakes. Can be. That is, while the inclined member 30 is inserted in parallel with the pile 20, i.e., in a folded state, while the pile 20 is inserted, the inclined member 30 is rotated around the hinge while the side surface of the inclined member 30 is excavated to form an upper structure. The lower side of 10 can be inclinedly supported. The inclined member 30 forms a truss structure together with the pile 20 and the upper structure 10, thereby significantly increasing resistance to horizontal loads such as earthquakes.
  • the hinge coupled to the side of the pile 20 may be formed directly on the pile 20, or the band may be coupled to the pile and formed on the band. When the hinge is formed on the band, it can be easily coupled to the pile 20 to be used.
  • the cross section of the inclined member 30 may be any of a rectangle, a circle, a hexagon, and an H type.
  • the inclined member 30 may be a hollow tubular shape or a hollow rod shape.
  • cross section of the pile 20 and the inclined member 30 will be described as being circular.
  • the upper side of the pile 20 may be formed with a vertical groove 24 in which the inclined member 30 can be inserted.
  • the size of the recess 24 may be inserted into the entire inclination member 30, or a part of it.
  • the cross-sectional area of the pile 20 is calculated in consideration of the groove 24. That is, by increasing the diameter of the pile 20, the cross-sectional area after forming the groove 24 can be matched to the design conditions.
  • the length of the pile 20 in the longitudinal direction may be increased in consideration of the groove 24, and the lower portion of the pile 20 may be smaller in diameter.
  • the lower portion in which the groove 24 is not formed may be formed as large as the upper portion in which the groove 24 is formed. In this case, there is a problem that the cross section unnecessarily increases, but it can secure stability structurally.
  • the inclined member 30 may be provided with a grouting injection passage extending from the upper side to the lower side. After the inclined member 30 is rotated and installed, grout may be injected through the grouting injection path to grout around the hinge. This can increase long-term structural stability by separating the hinge from the ground to prevent corrosion.
  • Grouting injection can be formed in a variety of ways. That is, when the inclined member 30 is tubular, the passage inside the tube is used as a grouting injection path, or a separate injection hose 32 is installed in the passage inside the pipe and the internal passage of the injection hose 32 is grouted injection. Can be used as a furnace. In addition, a separate injection hose 32 is coupled to the outside of the inclined member 30, and the passage inside the injection hose 32 may be used as a grouting injection furnace. In either case, the bottom of the grouting inlet is preferably located near the hinge.
  • a sealing member 40 coupled to the upper and lower piles 20 and the inclined member 30 of the hinge to seal the hinge may be provided. That is, the sealing member 40 may be formed of a flexible synthetic resin and the like coupled to the circumference of the hinge upper and lower piles 20 by a band, and at the same time coupled to the lower portion of the inclined member 30 by a band or the like.
  • the flexible sealing member 40 can easily accommodate the rotation of the inclined member 30, and the grout is well filled, and at the same time the ground and the grout can be completely separated.
  • the upper structure 10 is installed on the ground; Pile 20 is inserted into the ground vertically to support the lower side of the upper structure (10); A pile reinforcing member 22 covering an upper portion of the pile 20; It may include; the lower portion is inclined members (30) hinged to the side of the pile reinforcing member (22).
  • the pile 20 and the inclined member 30 is circular.
  • This embodiment may further include a pile reinforcing member 22 as compared with the above-described embodiment.
  • the pile reinforcing member 22 may be formed of steel or the like.
  • the pile reinforcing member 22 may have a cylindrical shape in which an upper portion is opened, a cylinder in which an upper portion is closed, or a cylindrical portion in which only a part of an upper edge thereof is closed.
  • the pile reinforcing member 22 may be installed by covering the pile 20 at a construction site after the pile 20 is first manufactured.
  • the pile reinforcing member 22 may be formed to be in close contact with the outside of the pile 20 so that no separate coupling is required.
  • the grout may be pressurized between the pile 20 and the pile reinforcing member 22 to be more firmly coupled.
  • the pile 20 and the pile reinforcing member 22 may be formed to be appropriately spaced apart and injected grout. In this case, irregularities may be formed on the outer side of the pile 20 and the inner side of the pile reinforcing member 22 to be firmly coupled to each other.
  • the pile reinforcing member 22 may be manufactured together with the pile 20 when the pile 20 is manufactured. That is, by installing the pile reinforcing member 22 in the pile 20 production frame, the pile reinforcing member 22 may be manufactured integrally with the pile 20 at the same time as the pile 20 is produced. In this case, the structural stability can be increased by securing the integrity of the pile 20 and the pile reinforcing member 22.
  • the pile reinforcement reinforcing the upper portion of the pile 20 is a large vertical load and a large horizontal load, it is possible to reduce the cross-sectional area of the pile 20, or reduce the number of piles 20 to be installed.
  • the inclined member 30 may be hinged to the lower portion of the pile reinforcing member 22. When the pile reinforcing member 22 is covered together when the pile 20 is manufactured, the inclined member 30 may be coupled later. When the pile reinforcing member 22 is covered after the pile 20 is manufactured, the inclined member 30 may be covered with the pile 20 in the field or the like while being coupled to the pile reinforcing member 22.
  • a groove 24 may be formed at a side of the pile reinforcing member 22 in a vertical direction in which the inclined member 30 may be inserted.
  • the inside of the groove 24 of the pile reinforcing member 22 is in contact with the outside of the pile 20.
  • grout may be injected and coupled between the pile 20 and the pile reinforcing member 22.
  • the lower portion of the pile reinforcing member 22 is preferably formed to match the outer surface of the pile 20.
  • the inner surface of the lower side of the pile reinforcing member 22 is provided with a sealing member 40 such as rubber, the band may be installed on the outside.
  • the inclined members 30 may further include second inclined members 31 hinged to the side of the pile 20 by being spaced downward by a predetermined interval. That is, the seismic resistance can be significantly increased by further installing the second inclined members 31 in consideration of the interval between the piles 20, the depth of the piles 20, the size of the anticipated earthquake, and the like.
  • the second inclined members 31 may be installed between the inclined members 30.
  • the second inclined members 31 may be coupled to the lower side of the upper structure 10 or to the adjacent pile 20.
  • Seismic pile reinforcing structure construction method the step of inserting the pile 20, the hinge 20 is coupled to the ground in the ground; Rotating the inclined members 30 around a hinge while excavating the side surfaces of the inclined members 30; Constructing the upper structure (10) to be coupled to the upper side of the pile (20) and the inclined members (30); It can be done in order.
  • the step of inserting the pile 20, the hinges 30 are coupled to the ground into the ground, the step of inserting the inclined member 30 in parallel with the pile 20 after excavating the ground with auger, etc. to be.
  • the file 20 may be lightly driven after the file 20 is inserted.
  • the bottom of the file 20 may be filled with mortar or the like.
  • the step of rotating the inclined members 30 about the hinge while excavating the side surfaces of the inclined members 30 includes a screw excavator 50 vertically hinged to the side of the inclined members 30.
  • the screw excavator 50 may be rotated obliquely about its lower end and at the same time, it may be performed by rotating the inclined member 30. Soil and the like can be filled in the upper side of the inclined member 30 rotated in this step and the ground can be compacted.
  • the screw excavator 50 may be withdrawn and grouted around the hinge through the grout injection path as described above.
  • the screw excavator 50 may include a spiral screw 52 and an arc-shaped or c-shaped cover plate 54 covering one side of the screw 52.
  • Screw excavator 50 is placed in the vertical direction after the cover plate 54 is placed on the side in contact with the inclined member (30). Thereafter, by rotating the screw excavator 50 together with the inclined member 30, the inclined member 30 may be unfolded inclined.
  • the cover plate 54 can protect the inclined member 30 well by preventing the unnecessary soil from flowing in and preventing the inclined member 30 and the screw 52 from touching at the same time. That is, in the case of the inclined member 30 may be coated or anti-corrosion treatment to prevent corrosion, the damage of the coating or anti-corrosion treatment can be prevented.
  • the screw excavator 50 is withdrawn.
  • a guide tube 56 may be installed on the cover plate 54 of the screw excavator 50.
  • the guide tube 56 may be used to insert the grout injection tube after the rotation of the inclined member 30 is completed. That is, after inserting the injection tube into the guide tube 56, only the screw excavator 50 may be taken out while the injection tube remains. Then, by injecting grout into the ground through the injection tube, it is possible to reinforce the gap and the loose ground around the excavation. The injected grout not only restores the ground loosened during the excavation process, but also reinforces the ground that was initially soft. In addition, the grout filled around the pillar can effectively prevent the ground liquefaction problem.
  • the injection hole of the injection tube may be formed only at the lower end or a plurality of injection holes along the upper and lower sides. In addition, the injection tube may be withdrawn to the top while the injection.
  • the injection tube is further inserted through the guide tube 56, but the injection hose 32 in the above-described example may be used.
  • the coupling method of the injection hose 32 coupled to the inclined member 30 is appropriately selected, the grout may be injected into the ground while the grout is injected around the hinge and then pulled out upward.
  • the grout may be injected into the ground while the grout is injected around the hinge and then pulled out upward.
  • a passage is formed in the inclined member 30, it is also possible to use it.
  • the lower end of the cover plate 54 may be rotatably coupled to the lower end of the screw 52. That is, a rotatable ring may be installed at the lower end of the shaft of the screw 52 and the cover plate 54 may be coupled to the ring.
  • This allows the long cover plate 54 to be well integrated with the screw 52. Therefore, when the screw excavator 50 is inserted into the ground while rotating the cover plate 54 is inserted along the screw 52.
  • the cover plate 54 also rotates together with the screw 52 while allowing the soil outside the cover plate 54 to flow in, while allowing only the soil in the inclined direction to flow therein. Can tilt.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

La présente invention concerne une structure de renfort de pieu pour une résistance aux tremblements de terre, qui ne détériore pas une puissance de support du sol sous une structure supérieure, peut être installée facilement, et peut également garantir une stabilité structurelle à long terme en empêchant la corrosion. La structure de renfort de pieu comprend : une structure supérieure installée sur le sol ; des pieux insérés verticalement et installés dans le sol de façon à supporter un côté inférieur de la structure supérieure ; et des éléments inclinés ayant des parties inférieures articulées aux surfaces latérales des pieux. Les éléments inclinés tournent autour d'une charnière, tandis que les surfaces latérales des éléments inclinés sont excavées une fois que les pieux sont insérés dans le sol de façon à supporter le côté inférieur de la structure supérieure de manière inclinée, ce qui permet d'augmenter la résistance à un tremblement de terre.
PCT/KR2019/008341 2018-07-10 2019-07-08 Structure de renfort de pieu pour une résistance aux tremblements de terre et son procédé de construction WO2020013543A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180079876A KR101921099B1 (ko) 2018-07-10 2018-07-10 내진용 파일보강 구조 및 그 시공방법
KR10-2018-0079876 2018-07-10

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WO2020013543A1 true WO2020013543A1 (fr) 2020-01-16

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Publication number Priority date Publication date Assignee Title
KR102014125B1 (ko) 2019-06-03 2019-08-26 (주)효창이엔지 3축 내진 말뚝 구조 및 공법
KR102552985B1 (ko) 2021-06-21 2023-07-07 (주)효창이엔지 브레이싱 타이 3축 내진 말뚝 구조
KR102549479B1 (ko) 2022-10-05 2023-06-29 한국건설기술연구원 다축 내진 말뚝 및 이를 이용한 건축물의 시공방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001248134A (ja) * 2000-03-02 2001-09-14 Kawasaki Steel Corp トラス構造体
US20020088187A1 (en) * 2001-01-05 2002-07-11 Howard John Earl Rigid connector for bracing a mobile coach to a ground-anchor
KR20050074416A (ko) * 2005-06-27 2005-07-18 최두영 연속 조립식 가압그라우팅 쏘일네일링공법 및 그 장치
KR101117293B1 (ko) * 2011-05-03 2012-03-20 녹우건설(주) 파일 시공시 시멘트 밀크 주입방법
KR101738556B1 (ko) * 2016-11-28 2017-05-22 황운식 크로스바를 포함한 기초구조물 시공방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001248134A (ja) * 2000-03-02 2001-09-14 Kawasaki Steel Corp トラス構造体
US20020088187A1 (en) * 2001-01-05 2002-07-11 Howard John Earl Rigid connector for bracing a mobile coach to a ground-anchor
KR20050074416A (ko) * 2005-06-27 2005-07-18 최두영 연속 조립식 가압그라우팅 쏘일네일링공법 및 그 장치
KR101117293B1 (ko) * 2011-05-03 2012-03-20 녹우건설(주) 파일 시공시 시멘트 밀크 주입방법
KR101738556B1 (ko) * 2016-11-28 2017-05-22 황운식 크로스바를 포함한 기초구조물 시공방법

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