WO2020197061A1 - Structure sous-marine souterraine utilisant un moule géotextile et son procédé de construction - Google Patents

Structure sous-marine souterraine utilisant un moule géotextile et son procédé de construction Download PDF

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Publication number
WO2020197061A1
WO2020197061A1 PCT/KR2020/000299 KR2020000299W WO2020197061A1 WO 2020197061 A1 WO2020197061 A1 WO 2020197061A1 KR 2020000299 W KR2020000299 W KR 2020000299W WO 2020197061 A1 WO2020197061 A1 WO 2020197061A1
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WO
WIPO (PCT)
Prior art keywords
geosynthetic
formwork
casing
geotextile
concrete
Prior art date
Application number
PCT/KR2020/000299
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English (en)
Korean (ko)
Inventor
박서진
Original Assignee
박서진
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Filing date
Publication date
Application filed by 박서진 filed Critical 박서진
Publication of WO2020197061A1 publication Critical patent/WO2020197061A1/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
    • E02D5/34—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
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • 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
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/13—Geometrical or physical properties having at least a mesh portion
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0007—Production methods using a mold
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0018—Cement used as binder
    • E02D2300/002—Concrete
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0026—Metals
    • E02D2300/0029—Steel; Iron
    • E02D2300/0034—Steel; Iron in wire form
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0085—Geotextiles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements

Definitions

  • the present invention relates to an underground underwater structure using a geosynthetic formwork and a construction method thereof, and more particularly, a casing to protect the excavation pit wall is installed, and the soil and rocks inside the casing are excavated to the required depth, and then rebar net It relates to an underground underwater structure and its construction method using a geosynthetic formwork that constructs a structure, installs a tremi pipe, and pours underwater concrete to form a foundation.
  • the cast-in-place piles require large support and are installed on a long-depth foundation up to the rock support layer, and the underground continuous wall is used as an earth wall by forming an order wall by connecting the cast-in-place piles in a main row.
  • the concrete standard is formed the same as the inner diameter of the casing, so the structure standard is reduced and the inner standard of the casing must be manufactured in accordance with the structure standard, which is uneconomical.
  • Geosynthetic formwork is appropriate to demonstrate tensile strength to withstand the concrete load after casing is drawn out and that the structure can be formed according to the standard.
  • the geotextile formwork is a flexible material, there is a problem that the mortar penetrates between the casing and the geotextile formwork to reduce the size of the structure, and when the casing is pulled out, there is a problem that the casing and the friction force are generated and pulled out to the casing.
  • the present invention was conceived to solve the above problems, and the present invention is a geosynthetic that allows carcinogens and heavy metals to contaminate the soil when unhardened concrete overflows outside the casing, so that it can be cured in the formwork when concrete is placed.
  • the purpose is to provide underground underwater structures and construction methods using formwork.
  • the present invention attaches a spring ring to the bottom of the geosynthetic fiber in a circumferential direction, so that the geosynthetic formwork and the casing are in close contact with each other, and the geosynthetic fiber expands when drawing the casing after pouring concrete, so that it is in close contact with the soil layer.
  • the present invention uses a'c'-type bolt in the horizontal direction of the geosynthetic formwork to closely contact the lower and upper geosynthetics to connect the geosynthetic fibers of the lower to the outside and to the geosynthetic fibers of the upper to the inside, It has a purpose to prevent the phenomenon of being pulled out.
  • the present invention is installed by securing a sufficient lap joint length so as to support soil and friction outside the excavation hole in the vertical direction of the geosynthetic formwork.
  • the present invention provides a casing for protecting an excavation hole wall so that the excavation hole does not collapse in the process of forming a concrete pile;
  • a geosynthetic formwork that exerts tensile strength to withstand the concrete load after the casing is drawn out, the structure is formed according to the standard, blocks contact with groundwater, and acts as a form by wrapping the concrete outer wall;
  • a spring ring attached to the bottom of the geotextile formwork in a circumferential direction so that the geotextile and the casing are in close contact, and when the casing is pulled out while the concrete is poured, the geosynthetic fiber expands and adheres to the soil layer;
  • a horizontal connecting member connecting the upper geotextile and the lower geotextile in a horizontal direction; Cylindrical reinforcing bars formed in a grid shape inside the geosynthetic formwork and made of thick reinforcing bars or steel members;
  • a vertical connection member connected in the vertical direction of the geosynthetic fiber and securing a sufficient overlap length to
  • the horizontal connection member is composed of a'C'-type bolt with a screw wire formed at both ends and a nut screwed with a flat washer formed in a pair of plate-like shapes by connecting the lower geosynthetic fibers to the outside and the upper geosynthetic fibers to the inside. It features.
  • the geotextile formwork After the geotextile formwork is waterproofed, it is used as a formwork to block contact between unhardened concrete and groundwater to prevent contamination of groundwater by heavy metals of carcinogens.
  • the horizontal connection member is composed of a'C'-type bolt with a screw wire formed at both ends and a nut screwed with a flat washer formed in a pair of plate-like shapes by connecting the lower geosynthetic fibers to the outside and the upper geosynthetic fibers to the inside. It features.
  • a spring ring is installed at the bottom of the geosynthetic formwork in the circumferential direction to prevent the rise of concrete between the geosynthetic formwork and the casing, and curing by protecting the latency layer such as slime that inevitably occurs during underwater concrete pouring with the geosynthetic formwork from the ground. After that, crack the concrete.
  • the present invention is a method of completing a structure in pouring concrete in the basement, and has the effect of properly treating the latans layer such as slime through a geotextile formwork, securing the stability of the structure and preventing groundwater pollution.
  • a spring ring is formed at the bottom of the geosynthetic in the circumferential direction, so that the geosynthetic formwork and the casing are in close contact, and when the casing is pulled out while pouring concrete, the geosynthetic fiber expands and adheres to the soil layer, and the horizontal connection of the geosynthetic formwork is It prevents the phenomenon of being injured by frictional force when the casing is drawn by connecting the lower geotextile to the outside and the upper geotextile to the inside.
  • the present invention uses a'c'-shaped bolt in the horizontal direction of the geosynthetic formwork to closely contact the lower and upper geosynthetics to connect the geosynthetic fibers of the lower to the outside and the geosynthetic fibers of the upper to the inner side, It has the effect of preventing the formwork from being pulled out.
  • the present invention is effective in preventing a phenomenon in which the entire geosynthetic fiber is pulled out when the casing is drawn by fastening bolts at the bottom of the geosynthetic formwork with the reinforcing bar mesh at appropriate intervals.
  • the vertical connection of the geosynthetic fiber can secure a sufficient overlap length to support the soil and the frictional force outside the excavation hole by using a Velcro (wrap) and a'c' type bolt.
  • the present invention protects and cures the laitance layer such as slime that inevitably occurs during underwater concrete pouring on the ground with a geosynthetic formwork and then cracks the concrete, so that the unhardened concrete overflows the casing and contaminates the soil with carcinogens and heavy metals. Avoid letting go.
  • the present invention can secure the safety of a construction site by arranging and constructing a vertical hole installed in a ventilation hole of a subway construction site and an earth wall used as an earth wall, such as a building basement.
  • FIG. 1 is an overall view showing an underground underwater structure installation and construction method using a geosynthetic formwork according to the present invention.
  • FIG. 2 is a view showing a spring ring formed in the circumferential direction at the bottom of the geosynthetic formwork according to the present invention.
  • FIG 3 is a view showing the use of a horizontal connecting member connected in the horizontal direction of the geosynthetic formwork according to the present invention.
  • FIG. 4 is a view showing the use of a vertical connecting member connected in the vertical direction of the geosynthetic formwork according to the present invention.
  • FIG. 5 is a view showing that the lowermost end of the geosynthetic formwork according to the present invention is fastened with bolts at appropriate intervals with a reinforcing bar network.
  • FIG. 6 is a view for curing by protecting the latency layer that inevitably occurs during underwater concrete pouring according to the present invention with geotextiles on the ground.
  • FIG. 7 is a view using a waterproof geotextile to block contact with groundwater according to the present invention.
  • FIG. 8 is a view for placing and constructing the cast-in-place pile according to the present invention in a main heat type.
  • the present invention comprises a geosynthetic formwork 10, a casing 20, a spring ring 30, a horizontal connecting member 40, a vertical connecting member 50, and a cylindrical reinforcing bar network 60. Done.
  • the geosynthetic formwork 10 is composed of various sizes of fabricated and combined according to the length of the casing 20, and the cross-sectional shape is made of any one of a circular tube, a corrugated tube, a spiral tube, a smooth tube, and a corrugated tube.
  • a cylindrical shape is preferable when considering the workability and the cross-sectional area of the concrete column.
  • the geosynthetic formwork 10 exerts tensile strength to withstand the concrete load after the casing 20 is drawn out, and the structural molding is formed according to the standard, blocks contact with the groundwater, and acts as a formwork surrounding the outer wall of the concrete, Since the geosynthetic formwork 10 with sufficient tensile strength is used as a formwork, the inclination of the cast-in-place pile, which is likely to occur while drawing the casing before the concrete is cured, is prevented.
  • the geosynthetic formwork 10 is used as a formwork after waterproof treatment to prevent contamination of groundwater such as carcinogens and heavy metals by blocking contact between unhardened concrete and groundwater.
  • the geosynthetic formwork 10 protects and cures the latent layer, which inevitably occurs during underwater concrete pouring, with geotextiles on the ground, and then cracks the concrete, so that the unhardened concrete is removed from the outside of the casing. It prevents carcinogens and heavy metals from contaminating the soil.
  • the casing 20 serves to protect the excavation hole wall so that the excavation hole does not collapse in the process of forming the concrete pile.
  • the soil and the arm inside the casing are excavated to the required depth, and the collapsible soft ground and sandy earth under the groundwater level are excavated accurately and safely using a hydraulic oscillator by the All Casing method.
  • the spring ring 30 is attached to the lower end of the geosynthetic formwork 10 in a circumferential direction so that the geosynthetic fiber and the casing are in close contact, and when the casing is pulled out while pouring concrete, the geosynthetic fiber expands and adheres to the soil layer. It plays a role in making it possible.
  • the present invention prevents the mortar rise between the geosynthetic formwork and the casing by installing a spring ring at the bottom of the geosynthetic formwork 10 in the circumferential direction.
  • the spring ring 30 is wrapped by the geosynthetic fiber 10 at the bottom of the geosynthetic formwork 10 and inserted therein.
  • the horizontal connection member 40 is a pair of'c'-type bolts 41 formed with threaded lines at both ends by connecting the lower geosynthetic fiber to the outside and the upper geosynthetic fiber to the inside to be in close contact. It consists of a flat washer 43 formed in a plate shape and a nut 45 that is screwed.
  • the horizontal connection of geotextiles prevents the phenomenon of being pulled out by the frictional force when drawing the casing by connecting the lower geotextiles to the outside and the upper geotextiles inside, and using a'c' type bolt Make it close.
  • the vertical connection member 50 is a geosynthetic formwork 10 in a vertical direction with a Velcro 57 and a'c'-type bolt 51 and a pair of plate-shaped screws formed at both ends.
  • the formed flat washer 53 and the nut 55 screwed together are used to secure and install sufficient overlapping length to support the soil and the frictional force outside the excavation hole.
  • the vertical connection member 50 can respond flexibly to fit the diameter of the casing by securing the overlapping length.
  • the cylindrical reinforcing bar network 60 is formed in a grid shape inside the geosynthetic fiber, and is made of a thick reinforcing bar or steel frame member.
  • the horizontal and vertical contact portions of the cylindrical reinforcing bar network 60 are joined by welding or binding lines.
  • the geosynthetic formwork 10 is used as a formwork after waterproofing to prevent contamination of groundwater such as carcinogens and heavy metals by blocking contact between unhardened concrete and groundwater.
  • the geosynthetic formwork and the casing are closely attached to the bottom of the geosynthetic fiber through a spring ring, and while concrete is poured, the geosynthetic fiber expands and adheres to the soil layer when the casing is pulled out, thereby preventing the phenomenon of reducing the size of the structure. .
  • the geosynthetic formwork 10 is installed after digging the soil and the arm to the required depth inside the casing 20 protecting the excavation hole wall, and when the length of the geosynthetic formwork becomes longer, horizontal connection It is installed by connecting the upper geosynthetic fibers and the lower geosynthetic fibers in close contact with each other through a "c" type bolt 40, securing a sufficient overlap length to support the earth and the frictional force outside the excavation hole, and connecting the geosynthetic fibers in the vertical direction. .
  • the geosynthetic formwork is installed outside the reinforcement network 60, and the reinforcement net 60 installed at the bottom of the geosynthetic formwork is fastened with bolts to cause the geosynthetic fiber to rise when drawing the casing. To prevent the phenomenon.
  • the geosynthetic formwork 10 is made of a fibrous material and is flexible and waterproofed to prevent water pollution due to carcinogens of cement and heavy metals, and a spring ring 30 is provided at the bottom of the geosynthetic fiber in the circumferential direction.
  • the geotextile formwork and the casing are in close contact with each other, and the geotextile formwork is expanded when the casing is pulled out while pouring concrete and is formed in close contact with the soil layer to conform to the structure standard.
  • the underground underwater structure installation and its construction method using the geosynthetic formwork constructed as described above can be applied to the foundation of cast-in-place piles that require a large supporting force to secure safety and improve the durability of the structure.
  • the vertical opening installed in the ventilation opening of the subway construction site and the underground continuous wall used as the earth wall such as the basement of the building are arranged and constructed in a main column type (Fig. 360) to secure the safety of the construction site. .
  • the present invention relates to an underground underwater structure using a geosynthetic formwork and a construction method thereof, and more particularly, a casing to protect the excavation pit wall is installed, and the soil and rocks inside the casing are excavated to the required depth, and then rebar net It relates to an underground underwater structure and its construction method using a geosynthetic formwork that constructs a structure, installs a tremi pipe, and pours underwater concrete to form a foundation.

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

Abstract

La présente invention concerne l'installation d'une structure sous-marine souterraine utilisant un moule géotextile constitué de géotextiles et son procédé de construction. L'objectif de la présente invention est d'assurer la sécurité dans la fondation d'un pieu coulé sur place, ce qui nécessite un niveau élevé de force de support, ce qui permet d'améliorer la durabilité de la structure, et d'empêcher un contact entre le béton et les eaux souterraines à l'aide d'un moule géotextile, ce qui empêche la contamination des eaux souterraines par des produits carcinogènes et assure la sécurité de la structure. En ce qui concerne la configuration de la présente invention, la structure sous-marine souterraine utilisant un moule géotextile comprend : un tubage pour protéger une paroi creuse d'excavation de telle sorte qu'un trou d'excavation ne s'effondre pas dans le processus de formation d'un pieu en béton ; un moule géotextile pour présenter une résistance à la traction suffisante pour endurer la charge de béton après que le tubage est tiré, le moule géotextile étant formé de telle sorte que la structure est moulée selon la spécification, le moule géotextile bloquant un contact avec des eaux souterraines et encerclant la paroi externe en béton, ce qui joue le rôle d'un moule ; une bague de ressort fixée à l'extrémité inférieure du moule géotextile dans la direction circonférentielle de telle sorte que le moule géotextile et le tubage sont poussés l'un contre l'autre, et lorsque le tubage est tiré pendant la coulée du béton, les géotextiles sont étendus et poussés contre la couche de sol ; un élément de raccordement horizontal pour raccorder un géotextile supérieur et un géotextile inférieur dans la direction horizontale ; une maille de barre d'armature cylindrique formée à l'intérieur des géotextiles selon un type à treillis et constituée d'une barre d'armature épaisse ou d'un élément de charpente en acier ; et un élément de raccordement vertical pour raccorder les géotextiles dans la direction verticale de façon à assurer une longueur de joint de recouvrement suffisante pour soutenir le sol à l'extérieur du trou d'excavation avec une force de frottement.
PCT/KR2020/000299 2019-03-25 2020-01-08 Structure sous-marine souterraine utilisant un moule géotextile et son procédé de construction WO2020197061A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2019-0033371 2019-03-25
KR1020190033371A KR102000104B1 (ko) 2019-03-25 2019-03-25 토목섬유거푸집을 이용한 지하의 수중구조물과 그 시공방법

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WO2020197061A1 true WO2020197061A1 (fr) 2020-10-01

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KR (1) KR102000104B1 (fr)
PH (1) PH12020000058A1 (fr)
WO (1) WO2020197061A1 (fr)

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CN112431165A (zh) * 2020-11-20 2021-03-02 江苏科技大学 生态加固砂性海岸边坡的加固装置及施工方法

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CN111236214A (zh) * 2020-01-18 2020-06-05 深圳市穿山甲工程技术有限公司 一种旋挖钻机加长护筒施工咬合桩的施工方法
KR102151167B1 (ko) 2020-04-10 2020-09-02 박서진 현장타설말뚝 타설용 토목섬유거푸집 고정장치 및 그 시공방법
CN112343040B (zh) * 2020-10-29 2021-06-11 江西创基管桩有限公司 一种预应力高强度混凝土管桩
KR102358223B1 (ko) * 2021-04-22 2022-02-08 에스오씨기술지주 주식회사 희생강관 절약형 현장타설 말뚝 구조 및 그 시공방법
KR102456454B1 (ko) * 2021-11-26 2022-10-19 에스오씨기술지주 주식회사 희생강관 절약형 현장타설 말뚝 구조 및 그 시공방법

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CN112431165A (zh) * 2020-11-20 2021-03-02 江苏科技大学 生态加固砂性海岸边坡的加固装置及施工方法

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