WO2020197061A1 - Subterranean underwater structure using geotextile mold and method for constructing same - Google Patents
Subterranean underwater structure using geotextile mold and method for constructing same Download PDFInfo
- 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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- WIPO (PCT)
- Prior art keywords
- geosynthetic
- formwork
- casing
- geotextile
- concrete
- Prior art date
Links
- 239000004746 geotextile Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000002689 soil Substances 0.000 claims abstract description 28
- 238000009412 basement excavation Methods 0.000 claims abstract description 21
- 239000003673 groundwater Substances 0.000 claims abstract description 19
- 231100000357 carcinogen Toxicity 0.000 claims abstract description 10
- 239000003183 carcinogenic agent Substances 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 238000011109 contamination Methods 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 238000009415 formwork Methods 0.000 claims description 88
- 239000000835 fiber Substances 0.000 claims description 45
- 230000003014 reinforcing effect Effects 0.000 claims description 25
- 238000010276 construction Methods 0.000 claims description 12
- 229910001385 heavy metal Inorganic materials 0.000 claims description 9
- 239000011435 rock Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003895 groundwater pollution Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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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Abstract
Description
본 발명은 토목섬유거푸집을 이용한 지하의 수중구조물과 그 시공방법에 관한 것으로서, 보다 상세하게는 굴착 공벽을 보호하는 케이싱을 설치하고, 케이싱 내부의 토사와 암을 소요깊이까지 굴착한 후, 철근망을 건입하고 트레미파이프를 설치하고 수중콘크리트를 타설하여 기초를 형성시키는 토목섬유거푸집을 이용한 지하의 수중구조물과 그 시공방법에 관한 것이다.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.
현장타설말뚝은 큰지지력을 요구하며 암반지지층까지 깊이가 긴 기초에 설치되어지고 있으며, 지하연속벽은 현장타설말뚝을 주열식으로 연결하여 차수벽을 형성하여 토류벽으로 사용되어진다. 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.
그러나 종래 지하에 콘크리트를 타설하여 구조물을 완성시키는 공법은 수중에 콘크리트를 타설하게 되므르 콘크리트 상단에 슬라임 등 레이탄스층이 쌓이고, 지하수가 흐르는 층에서는 몰탈이 유실되어서 자갈만 남아 구조물 기능이 저하되고, 굳지않은 콘크리트에는 6가크롬. 비소. 카드늄. 구리. 수은. 납 등 발암물질과 중금속을 포함하고 있는데 굳지않은 콘크리트를 수중에 타설할 때 굳지않은 콘크리트가 지하수와 접촉하면 물에 융해되어서 지하수를 오염시킨다. However, in the conventional method of pouring concrete into the basement to complete the structure, concrete is poured into the water, so a layer of slime such as slime accumulates on the top of the concrete, and mortar is lost in the layer where the groundwater flows, leaving only gravel and deteriorating the structure function. , Hexavalent chromium for unhardened concrete. arsenic. Cadmium. Copper. Mercury. It contains carcinogens such as lead and heavy metals, but when unhardened concrete is poured into water, when the unhardened concrete comes into contact with groundwater, it melts into the water and contaminates the groundwater.
연약지반에 수중콘크리트를 타설하면 콘크리트 단위중량이 연약지반 토사 중량보다 크기 때문에 케이싱을 인발한 후 굳지않은 콘크리트가 연약지반 속으로 침입하는 히빙현상이 발생되는 문제점이 있다.When underwater concrete is poured on the soft ground, the unit weight of the concrete is larger than the weight of the soil on the soft ground, so there is a problem that the unhardened concrete penetrates into the soft ground after the casing is drawn out.
강관종류의 거푸집을 케이싱내부에 설치하면 콘크리트 규격이 케이싱 내경과 동일하게 형성되므로 구조물 규격이 축소되어서 케이싱의 내부규격을 구조물 규격에 맞게 제작해야하므로 비경제적이다.If a steel pipe type formwork is installed inside the casing, 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.
케이싱 인발후 콘크리트 하중에 견디는 인장강도를 발휘하고 구조물 성형이 규격에 맞게 완성 될 수 있는 토목섬유거푸집이 적절하다Geosynthetic 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.
토목섬유거푸집은 유연한 재료이므로 몰탈이 케이싱과 토목섬유 거푸집 사이로 침입하여 구조물 규격을 축소시키는 현상이 발생하며, 케이싱을 인발 할 때 케이싱과 마찰력이 발생하여 케이싱에 끌려나오는 현상이 발생되는 문제점이 있었다.Since 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.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명은 굳지않은 콘크리트가 케이싱 외부로 넘치게 하면 발암물질과 중금속이 토양을 오염시키게 되므로 콘크리트 타설시 거푸집 내에서 양생될 수 있도록 하는 토목섬유거푸집을 이용한 지하의 수중구조물과 그 시공방법을 제공하는데 목적이 있다.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.
본 발명은 지하에 수중콘크리트를 타설할 때 차수 가능한 거푸집을 설치하여 슬라임 등 레이탄스층의 처리를 적법하게 실시하고, 구조물의 안전성을 확보하고. 지하수오염을 예방하는데, 그 목적이 있다.In the present invention, when placing underwater concrete in the basement, by installing a retractable formwork to legally treat the latans layer such as slime, and secure the safety of the structure. It has a purpose to prevent groundwater pollution.
본 발명은 토목섬유 하단에 용수철링을 원주방향으로 붙여서, 토목섬유 거푸집과 케이싱을 밀착시키고 콘크리트를 타설한 후 케이싱 인발시 토목섬유가 확장되어서 토사층과 밀착되도록 하는데, 그 목적이 있다.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.
본 발명은 토목섬유거푸집의 수평방향으로 'ㄷ'형 볼트를 사용하여 하부와 상부를 밀착시켜 하부의 토목섬유를 외측에 상부의 토목섬유를 내측으로 연결하여 케이싱을 인발할 때 마찰력에 의해서 토목섬유가 끌려나오는 현상을 방지하는데, 그 목적이 있다.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.
본 발명은 토목섬유거푸집의 수직방향으로 굴착공 외부의 토사와 마찰력을 지지할 수 있도록 충분한 겹이음 길이를 확보하여 설치하는데, 그 목적이 있다.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.
상기 목적을 달성하기 위하여 본 발명은 콘크리트말뚝을 형성하는 과정에서 굴착공이 붕괴되지 않도록 굴착 공벽을 보호하는 케이싱; 상기 케이싱 인발후 콘크리트 하중에 견디는 인장강도를 발휘하고 구조물 성형이 규격에 맞게 형성되며, 지하수와 접촉을 차단하고, 콘크리트 외벽을 감싸 거푸집의 역할을 하는 토목섬유거푸집; 상기 토목섬유거푸집 하단에 원주방향으로 붙여서 토목섬유와 케이싱을 밀착시키고 콘크리트를 타설하면서 케이싱 인발시 토목섬유가 확장되어서 토사층과 밀착되도록 하는 용수철링; 상부 토목섬유과 하부 토목섬유을 수평방향으로 연결하는 수평연결부재; 상기 토목섬유거푸집 내부에 격자형으로 형성되고, 굵은 철근 또는 철골 부재로 제작한 원통형 철근망; 상기 토목섬유의 수직방향으로 연결되고, 굴착공 외부의 토사와 마찰력으로 지지할 수 있는 충분한 겹이음 길이를 확보하는 수직연결부재; 를 포함한다.In order to achieve the above object, 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 support soil and friction outside the excavation hole; Includes.
상기 수평연결부재는 하부 토목섬유를 외측으로, 상부 토목섬유를 내측으로 연결하여 밀착시켜 연결하고 양단에 나사선이 형성된 'ㄷ'형 볼트와 한쌍의 플레이트 형으로 형성된 평와샤와 나사 체결되는 너트로 이루어진 것을 특징으로 한다.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.
상기 토목섬유거푸집을 방수 처리 후, 거푸집으로 사용하여 굳지않은 콘크리트와 지하수의 접촉을 차단하여 발암물질 중금속의 지하수 오염을 예방한다.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.
현장타설말뚝에 암반 지지층 까지의 깊이를 측정하여 설치되는 말뚝의 길이를 결정하는 제1단계; 지반에 소정 직경 및 길이를 갖는 케이싱을 밀착시켜 설치하는 제2단계; 상기 케이싱 내부의 토사와 암을 소요깊이까지 굴착하는 제3단계; 콘크리트 하중에 견디는 인장강도를 발휘하고 구조물 성형이 규격에 맞으며 토목섬유의 수평연결부재를 사용하여 하부 토목섬유를 외측으로 상부 토목섬유를 내측으로 연결하는 토목섬유거푸집을 제작하는 제4단계; 상기 토목섬유거푸집과 케이싱을 밀착시키기 위해 상기 토목섬유 하단에 용수철링을 원주방향으로 구비하는 제5단계; 토목섬유거푸집의 수직방향연결은 굴착공 외부의 토사와 마찰력을 지지할 수 있도록 충분한 겹이음 길이를 확보하여 설치하는 제6단계; 원통형 철근망을 제작하는 제7단계; 상기 원통형 철근망과 토목섬유거푸집을 결합하는 제8단계; 상기 토목섬유거푸집 최하단은 철근망과 적절한 간격으로 볼트를 체결하도록 하는 제9단계; 상기 토목섬유거푸집과 결합된 원통형 철근망을 케이싱 내에 건입시키는 제10단계; 상기 원통형 철근망 가운데에 트레미파이프를 설치하여 수중콘크리트를 타설하는 제11단계; 상기 케이싱을 인발하면서 수중콘크리트를 일정높이로 타설하는 제12단계; 를 포함한다.A first step of determining the length of the pile to be installed by measuring the depth to the rock support layer on the cast-in-place pile; A second step of installing a casing having a predetermined diameter and length in close contact with the ground; A third step of excavating the soil and rocks inside the casing to a required depth; A fourth step of producing a geosynthetic formwork connecting the lower geosynthetic fibers to the outside and the upper geosynthetic fibers to the inside using a horizontal connecting member of geosynthetic fibers that exhibits tensile strength to withstand the load of concrete, and conforms to the structure molding standard; A fifth step of providing a spring ring in the circumferential direction at the lower end of the geosynthetic fiber to closely contact the geosynthetic formwork and the casing; The vertical connection of the geosynthetic formwork is a sixth step of securing and installing a sufficient overlapping length so as to support soil and friction outside the excavation hole; A seventh step of manufacturing a cylindrical reinforcing bar network; An eighth step of combining the cylindrical reinforcing bar network and the geosynthetic formwork; A ninth step of fastening bolts at appropriate intervals with the reinforcing bar network at the lowermost end of the geosynthetic formwork; A tenth step of erecting a cylindrical reinforcing bar mesh combined with the geosynthetic formwork into a casing; An eleventh step of pouring underwater concrete by installing a tremi pipe in the center of the cylindrical reinforcing bar network; A 12th step of pouring underwater concrete at a predetermined height while drawing the casing; Includes.
상기 수평연결부재는 하부 토목섬유를 외측으로, 상부 토목섬유를 내측으로 연결하여 밀착시켜 연결하고 양단에 나사선이 형성된 'ㄷ'형 볼트와 한쌍의 플레이트 형으로 형성된 평와샤와 나사 체결되는 너트로 이루어진 것을 특징으로 한다.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.
상기 토목섬유거푸집 하단에 용수철링을 원주방향으로 설치하여 토목섬유거푸집과 케이싱 사이로 콘크리트의 상승을 예방하고, 수중콘크리트 타설 중 필연적으로 발생하는 슬라임 등 레이턴스층을 지상에서 토목섬유거푸집으로 보호하여 양생시킨 후 콘크리트 깨기를 실시한다.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.
본 발명은 지하에 콘크리트를 타설하는데 있어서 구조물을 완성시키는 공법으로 토목섬유거푸집을 통해 슬라임 등 레이탄스층의 처리를 적법하게 실시하며 구조물의 안정성을 확보하고 지하수오염을 예방하는 효과를 갖는다.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.
본 발명은 토목섬유 하단에 용수철링을 원주방향으로 형성하여 토목섬유거푸집과 케이싱을 밀착시키고 콘크리트 타설하면서 케이싱을 인발하면 토목섬유가 확장되어 토사층과 밀착 되도록 하여지고, 토목섬유거푸집의 수평방향 연결은 하부의 토목섬유를 외측에 상부의 토목섬유를 내측으로 연결하여 케이싱을 인발할 때 마찰력에 의해 부상되는 현상을 예방한다.In the present invention, 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.
본 발명은 토목섬유 거푸집의 수평방향으로 'ㄷ'형 볼트를 사용하여 하부와 상부를 밀착시켜 하부의 토목섬유를 외측에 상부의 토목섬유를 내측으로 연결하여 케이싱을 인발할 때 마찰력에 의해서 토목섬유거푸집이 끌려나오는 현상을 방지하는 효과가 있다.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.
본 발명은 토목섬유거푸집 최하단은 철근망과 적절한 간격으로 볼트를 체결하여 케이싱을 인발 할 때 토목섬유가 전체적으로 끌려나오는 현상을 예방하는 효과가 있다.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.
본 발명은 토목섬유의 수직방향 연결은 벨크로(찍찍이)와 'ㄷ'형 볼트를 사용하여 굴착공 외부의 토사와 마찰력으로 지지할 수 있는 충분한 겹이음 길이를 확보할 수 있다.In the present invention, 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.
본 발명은 수중콘크리트 타설 중 필연적으로 발생하는 슬라임 등 레이턴스층을 지상에서 토목섬유거푸집으로 보호하여 양생시킨 후 콘크리트 깨기를 실시함으로써, 굳지않은 콘크리트가 케이싱 외부로 넘쳐 발암물질과 중금속이 토양을 오염시키는 것을 방지한다.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.
본 발명은 지하철 공사장의 환기구에 설치되는 수직구와 건축물지하 등 토류벽으로 사용되는 지하연속벽은 현장타설말뚝을 주열식으로 배치 시공하여 공사장의 안전성을 확보할 수 있다.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.
도 1은 본 발명에 따른 토목섬유거푸집을 이용한 지하의 수중구조물 설치와 그 시공방법을 보여주는 전체적인 도면이다.1 is an overall view showing an underground underwater structure installation and construction method using a geosynthetic formwork according to the present invention.
도 2는 본 발명에 따른 토목섬유거푸집 하단에 원주방향으로 형성되는 용수철링을 보여주는 도면이다.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.
도 3은 본 발명에 따른 토목섬유거푸집의 수평방향으로 연결되는 수평연결부재를 사용한 것을 보여주는 도면이다.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.
도 4는 본 발명에 따른 토목섬유거푸집의 수직방향으로 연결되는 수직연결부재를 사용한 것을 보여주는 도면이다.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.
도 5는 본 발명에 따른 토목섬유거푸집 최하단은 철근망과 적절한 간격으로 볼트를 체결되는 것을 보여주는 도면이다.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.
도 6은 본 발명에 따른 수중콘크리트 타설 중 필연적으로 발생하는 레이턴스층을 지상에서 토목섬유로 보호하여 양생시키는 도면이다.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.
도 7은 본 발명에 따른 지하수와 접촉을 차단하기 위하여 방수 처리된 토목섬유를 사용하는 도면이다.7 is a view using a waterproof geotextile to block contact with groundwater according to the present invention.
도 8은 본 발명에 따른 현장타설말뚝을 주열식으로 배치 시공하는 도면이다.8 is a view for placing and constructing the cast-in-place pile according to the present invention in a main heat type.
본 발명을 충분히 이해하기 위해서 본 발명의 바람직한 실시예를 첨부 도면을 참조하여 설명한다. In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
본 발명의 실시예는 여러 가지 형태로 변형될 수 있으며, 본 발명의 범위가 아래에서 상세히 설명하는 실시예로 한정되는 것을 해석되어서는 안 된다. 본 실시예는 당업계에서 평균적인 지식을 가진자에게 본 발명을 보다 완전하게 설명하기 위하여 제공되는 것이다. 따라서 도면에서의 요소의 형상 등은 보다 명확한 설명을 강조하기 위해서 과장되어 표현할 수 있다. 각 도면에서 동일한 부재는 동일한 참조부호로 도시한 경우가 있음을 유의하여야 한다. 또한, 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 공지 기능 및 구성에 대한 상세한 기술은 생략된다.The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art. Therefore, the shape of elements in the drawings may be exaggerated to emphasize a more clear description. It should be noted that in each drawing, the same member may be indicated by the same reference numeral. In addition, detailed descriptions of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.
도 1에 도시된 바와 같이, 본 발명은 토목섬유거푸집(10), 케이싱(20), 용수철링(30), 수평연결부재(40), 수직연결부재(50) 및 원통형 철근망(60)으로 이루어진다.As shown in Fig. 1, the present invention comprises a
상기 토목섬유거푸집(10)은 그 크기를 다양하게 제작하여 상기 케이싱(20)의 길이에 따라 결합하여 구성되며, 그 단면 형상이 원형관, 파형관, 나선관, 평활관, 주름관 중 어느 하나를 사용할 수 있으나, 시공성이나 콘크리트기둥의 단면적을 고려할 때 원통형이 바람직하다. The
상기 토목섬유거푸집(10)은 상기 케이싱(20) 인발후 콘크리트 하중에 견디는 인장강도를 발휘하고 구조물 성형이 규격에 맞게 형성되며, 지하수와 접촉을 차단하고, 콘크리트 외벽을 감싸 거푸집의 역할을 하며, 인장강도가 충분한 토목섬유거푸집(10)을 거푸집으로 사용하므로 콘크리트가 양생되기 전 상기 케이싱을 인발하면서 발생하기 쉬운 현장타설말뚝의 기울어짐을 방지한다. The
도 7에 도시된 바와 같이, 상기 토목섬유거푸집(10)은 방수 처리 후, 거푸집으로 사용하여 굳지않은 콘크리트와 지하수의 접촉을 차단하여 발암물질 및 중금속 등의 지하수 오염을 예방한다.As shown in Figure 7, the
도 6에 도시된 바와 같이, 상기 토목섬유거푸집(10)은 수중콘크리트 타설 중 필연적으로 발생하는 레이턴스층을 지상에서 토목섬유로 보호하여 양생시킨 후 콘크리트 깨기를 실시함으로써, 굳지않은 콘크리트가 케이싱 외부로 넘쳐 발암물질과 중금속이 토양을 오염시키는 것을 방지한다.As shown in Fig. 6, the
상기 케이싱(20)은 콘크리트 말뚝을 형성하는 과정에서 굴착 구멍이 붕괴되지 않도록 굴착 공벽을 보호하는 역할을 한다.The
상기 케이싱(20)은 설치된 후, 케이싱 내부의 토사와 암을 소요깊이까지 굴착하는데, 붕괴성 연약지반 및 지하수위 하부의 사질토류는 All Casing공법으로 유압식 Oscillator를 사용하여 정확하고 안전하게 굴착한다.After the
도 2에 도시된 바와 같이, 상기 용수철링(30)은 상기 토목섬유거푸집(10) 하단에 원주방향으로 붙여서 토목섬유와 케이싱을 밀착시키고 콘크리트를 타설하면서 케이싱 인발시 토목섬유가 확장되어서 토사층과 밀착되도록 하는 역할을 한다.As shown in Fig. 2, the
또한, 본 발명은 토목섬유거푸집(10) 하단에 용수철링을 원주방향으로 설치하여 토목섬유거푸집과 케이싱 사이로 몰탈의 상승을 예방한다.In addition, the present invention prevents the mortar rise between the geosynthetic formwork and the casing by installing a spring ring at the bottom of the
상기 용수철링(30)은 상기 토목섬유거푸집(10) 하단에서 토목섬유(10)에 의해 감싸서 내삽된다.The
도 3에 도시된 바와 같이, 상기 수평연결부재(40)는 하부 토목섬유를 외측으로, 상부 토목섬유를 내측으로 연결하여 밀착시켜 연결하고 양단에 나사선이 형성된 'ㄷ'형 볼트(41)와 한쌍의 플레이트 형으로 형성된 평와샤(43)와 나사 체결되는 너트(45)로 이루어진다.As shown in Figure 3, the
토목섬유의 수평방향 연결은 하부 토목섬유를 외측에 상부 토목섬유를 내측으로 연결하여 케이싱을 인발 할 때 마찰력에 의해서 토목가 끌려나오는 현상을 예방하고, 'ㄷ'형 볼트를 사용하여 하부와 상부 토목섬유를 밀착시킨다.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.
도 4에 도시된 바와 같이, 상기 수직연결부재(50)는 토목섬유거푸집(10)을 수직방향으로 벨크로(57)와 양단에 나사선이 형성된 'ㄷ'형 볼트(51)와 한쌍의 플레이트 형으로 형성된 평와샤(53)와 나사 체결되는 너트(55)를 사용하여 굴착공 외부의 토사와 마찰력으로 지지할 수 있는 충분한 겹이음 길이를 확보하여 설치한다.As shown in Figure 4, the
상기 수직연결부재(50)는 겹이음 길이를 확보함으로써, 상기 케이싱의 직경에 알맞도록 탄력성이 있게 대응할 수 있다.The
상기 원통형 철근망(60)은 상기 토목섬유의 내부에 격자형으로 형성되고, 굵은 철근 또는 철골 부재로 제작된다. The cylindrical reinforcing
상기 원통형 철근망(60)의 가로와 세로의 접촉부분은 용접 또는 결속선에 의해 결합된다.The horizontal and vertical contact portions of the cylindrical reinforcing
현장타설말뚝에 암반 지지층 까지의 깊이를 측정하여 설치되는 말뚝의 길이를 결정하는 제1단계; 지반에 소정 직경 및 길이를 갖는 케이싱을 밀착시켜 설치하는 제2단계; 상기 케이싱 내부의 토사와 암을 소요깊이까지 굴착하는 제3단계; 콘크리트 하중에 견디는 인장강도를 발휘하고 구조물 성형이 규격에 맞으며 토목섬유의 수평연결부재를 사용하여 하부 토목섬유를 외측으로 상부 토목섬유를 내측으로 연결하는 토목섬유거푸집을 제작하는 제4단계; 상기 토목섬유거푸집과 케이싱을 밀착시키기 위해 상기 토목섬유 하단에 용수철링을 원주방향으로 구비하는 제5단계; 토목섬유거푸집의 수직방향연결은 굴착공 외부의 토사와 마찰력을 지지할 수 있도록 충분한 겹이음 길이를 확보하여 설치하는 제6단계; 원통형 철근망을 제작하는 제7단계; 상기 원통형 철근망과 토목섬유거푸집을 결합하는 제8단계; 상기 토목섬유거푸집 최하단은 철근망과 적절한 간격으로 볼트를 체결하도록 하는 제9단계; 상기 토목섬유거푸집과 결합된 원통형 철근망을 케이싱 내에 건입시키는 제10단계; 상기 원통형 철근망 가운데에 트레미파이프를 설치하여 수중콘크리트를 타설하는 제11단계; 상기 케이싱을 인발하면서 수중콘크리트를 일정높이로 타설하는 제12단계; 를 포함하여 이루어진다.A first step of determining the length of the pile to be installed by measuring the depth to the rock support layer on the cast-in-place pile; A second step of installing a casing having a predetermined diameter and length in close contact with the ground; A third step of excavating the soil and rocks inside the casing to a required depth; A fourth step of producing a geosynthetic formwork connecting the lower geosynthetic fibers to the outside and the upper geosynthetic fibers to the inside using a horizontal connecting member of geosynthetic fibers that exhibits tensile strength to withstand the load of concrete, and conforms to the structure molding standard; A fifth step of providing a spring ring in the circumferential direction at the lower end of the geosynthetic fiber to closely contact the geosynthetic formwork and the casing; The vertical connection of the geosynthetic formwork is a sixth step of securing and installing a sufficient overlapping length so as to support soil and friction outside the excavation hole; A seventh step of manufacturing a cylindrical reinforcing bar network; An eighth step of combining the cylindrical reinforcing bar network and the geosynthetic formwork; A ninth step of fastening bolts at appropriate intervals with the reinforcing bar network at the lowermost end of the geosynthetic formwork; A tenth step of erecting a cylindrical reinforcing bar mesh combined with the geosynthetic formwork into a casing; An eleventh step of pouring underwater concrete by installing a tremi pipe in the center of the cylindrical reinforcing bar network; A 12th step of pouring underwater concrete to a predetermined height while drawing the casing; It is made including.
상기 4단계에서 상기 토목섬유거푸집(10)은 방수 처리 후, 거푸집으로 사용하여 굳지않은 콘크리트와 지하수의 접촉을 차단하여 발암물질 및 중금속 등의 지하수 오염을 예방한다.In the fourth step, the
상기 5단계는 토목섬유 하단에 용수철링을 통해 토목섬유거푸집과 케이싱을 밀착시키고 콘크리트를 타설하면서 케이싱 인발시 토목섬유가 확장되어 토사층과 밀착되어지도록 하여 구조물 규격을 축소시키는 현상을 방지하는 역할을 한다.In the fifth step, 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. .
도 1에 도시된 바와 같이 굴착공벽을 보호하는 케이싱(20)내부에 토사와 암을 소요깊이까지 굴착한 후 토목섬유거푸집(10)이 설치되어지며, 토목섬유거푸집의 길이가 길어지게 되면 수평연결을 "ㄷ"형 볼트(40)로 통해 상부 토목섬유과 하부 토목섬유을 밀착하여 연결하고, 굴착공 외부의 토사와 마찰력을 지지할 수 있도록 충분한 겹이음 길이를 확보하여 토목섬유을 수직방향으로 연결하여 설치된다.As shown in Fig. 1, the
그 이후로 도 5에 도시한 바와 같이, 철근망(60) 외부에 토목섬유거푸집이 설치되어지며, 토목섬유거푸집 최하단에 설치되어진 철근망(60)은 볼트로 체결하여 케이싱 인발시 토목섬유가 부상하는 현상을 방지한다.Thereafter, as shown in Fig. 5, the geosynthetic formwork is installed outside the
또한, 토목섬유거푸집(10)은 섬유재질로 되어 유연하여 방수처리가 되어져 시멘트의 발암물질과 중금속으로 인한 수질오염을 막아주는 역할을 하고, 토목섬유 하단에 용수철링(30)을 원주방향으로 구비하여 토목섬유의 거푸집과 케이싱을 밀착시키고 콘크리트 타설하면서 케이싱 인발시 토목섬유거푸집이 확장되어 토사층과 밀착시켜 구조물 규격에 맞게 형성된다.In addition, the
상기와 같이 구성된 토목섬유거푸집을 이용한 지하의 수중구조물 설치와 그 시공방법은 큰 지지력을 요구하는 현장타설말뚝 기초에 적용하여 안전성을 확보하여 구조물의 내구성을 증진시킬 수 있다.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.
또한, 도 8에 도시한 바와 같이, 지하철 공사장의 환기구에 설치되는 수직구와 건축물지하 등 토류벽으로 사용되는 지하연속벽은 현장타설말뚝을 주열식으로 배치 시공(도360)하여 공사장의 안전성을 확보한다.In addition, as shown in Fig. 8, 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. .
본 발명은 토목섬유거푸집을 이용한 지하의 수중구조물과 그 시공방법에 관한 것으로서, 보다 상세하게는 굴착 공벽을 보호하는 케이싱을 설치하고, 케이싱 내부의 토사와 암을 소요깊이까지 굴착한 후, 철근망을 건입하고 트레미파이프를 설치하고 수중콘크리트를 타설하여 기초를 형성시키는 토목섬유거푸집을 이용한 지하의 수중구조물과 그 시공방법에 관한 것이다.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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| KR1020190033371A KR102000104B1 (en) | 2019-03-25 | 2019-03-25 | UNDERWATER STRUCTURE AND METHOD USING INTEGRAL MOLD MODULE OF FIBER Reinforced Composites |
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| CN112431165A (en) * | 2020-11-20 | 2021-03-02 | 江苏科技大学 | Reinforcing device for ecologically reinforcing sandy coast side slope and construction method |
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| KR102000104B1 (en) * | 2019-03-25 | 2019-10-01 | 박서진 | UNDERWATER STRUCTURE AND METHOD USING INTEGRAL MOLD MODULE OF FIBER Reinforced Composites |
| CN111236214A (en) * | 2020-01-18 | 2020-06-05 | 深圳市穿山甲工程技术有限公司 | Construction method for constructing secant pile by lengthening protective cylinder of rotary drilling rig |
| KR102151167B1 (en) | 2020-04-10 | 2020-09-02 | 박서진 | Geotechnical formwork fixing device for construction of cast-in-place piles and construction method |
| CN112343040B (en) * | 2020-10-29 | 2021-06-11 | 江西创基管桩有限公司 | Prestressed high-strength concrete pipe pile |
| KR102358223B1 (en) * | 2021-04-22 | 2022-02-08 | 에스오씨기술지주 주식회사 | Sacrificial steel pipe saving cast in placed pile and the construction method therefor |
| KR102456454B1 (en) * | 2021-11-26 | 2022-10-19 | 에스오씨기술지주 주식회사 | Sacrificial steel pipe saving cast in placed pile and the construction method therefor |
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2019
- 2019-03-25 KR KR1020190033371A patent/KR102000104B1/en active
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- 2020-02-19 PH PH1/2020/000058A patent/PH12020000058B1/en unknown
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| KR200326293Y1 (en) * | 2003-05-01 | 2003-09-13 | 유천만 | protection wall for concrete pre cast purification tank |
| KR101024146B1 (en) * | 2010-07-13 | 2011-03-22 | 정시영 | Odor backflow prevention device and odor treatment method using same |
| KR101664368B1 (en) * | 2016-04-27 | 2016-10-24 | 박을재 | A cast-in place pile arrangement method for head of concrete pile exposed to outside using geo tube |
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| CN112431165A (en) * | 2020-11-20 | 2021-03-02 | 江苏科技大学 | Reinforcing device for ecologically reinforcing sandy coast side slope and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102000104B1 (en) | 2019-10-01 |
| PH12020000058B1 (en) | 2022-07-27 |
| PH12020000058A1 (en) | 2021-01-18 |
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