WO2015182818A1 - Appareils destinés à empêcher la flottabilité de corps à noyau creux et procédé permettant de construire une dalle bidirectionnelle à noyau creux en utilisant ces derniers - Google Patents

Appareils destinés à empêcher la flottabilité de corps à noyau creux et procédé permettant de construire une dalle bidirectionnelle à noyau creux en utilisant ces derniers Download PDF

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Publication number
WO2015182818A1
WO2015182818A1 PCT/KR2014/006321 KR2014006321W WO2015182818A1 WO 2015182818 A1 WO2015182818 A1 WO 2015182818A1 KR 2014006321 W KR2014006321 W KR 2014006321W WO 2015182818 A1 WO2015182818 A1 WO 2015182818A1
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WO
WIPO (PCT)
Prior art keywords
hollow
slab
prevention device
formwork
buoyancy prevention
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Application number
PCT/KR2014/006321
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English (en)
Korean (ko)
Inventor
최원석
이승창
Original Assignee
삼성물산(주)
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Application filed by 삼성물산(주) filed Critical 삼성물산(주)
Publication of WO2015182818A1 publication Critical patent/WO2015182818A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors

Definitions

  • the present invention relates to a device for preventing the floating of the hollow body even when concrete is poured in the construction of a two-way hollow slab provided with a hollow body, and a construction method of the two-way hollow slab using the same, in more detail Can work as a single person at the top of the formwork, the buoyancy prevention device of the hollow body, characterized in that it does not depend on the length when fastening and fastening with the upper reinforcing bar and a method of constructing a two-way hollow slab using this preferably It is about.
  • Hollow core slab has a hollow core in the center and has a relatively good sectional performance compared to its own weight as the panel weight is reduced.
  • Such hollow slabs have a long span and a flat plate. (flat slab) is of course advantageous to reduce the noise between floors.
  • One of the slab systems currently used in buildings in terms of weight reduction of the slab weight is a one-way hollow core slab. Since most of the slabs of building structures such as apartment houses exhibit two-way behavior, it is difficult to directly apply one-way hollow slabs without design changes and additional costs. In order to solve this problem, a two-way hollow slab was developed by a bubble deck company in the Netherlands and a Cobiax company in Switzerland using a spherical or ellipsoidal plastic ball as a hollow body.
  • FIG. 1 (a) and (b) show a conventional two-way hollow slab.
  • Figure 1 (b) shows a prior patent developed by the present inventors (Patent Registration No. 10-1076407, name: donut-shaped hollow forming body and a two-way hollow slab using the same and its construction method).
  • the slab spheres exhibit two-way resistance characteristics as the ball-shaped hollow bodies are arranged in a large number of rows and embedded in the slab concrete.
  • the two-way hollow slab is integrally formed by a concrete part in which a slab bottom in which slab bottom reinforcement is embedded and a slab upper in which slab upper reinforcement is embedded are filled between a ball-shaped hollow body.
  • the slab sphere is completed in two directions while being connected to.
  • Such a two-way hollow slab needs special attention to fix the position of the hollow body.
  • buoyancy prevention device for solving this problem is fixed to prevent the device from falling out of the formwork after inserting the device by drilling the formwork to have a sufficient strength against buoyancy.
  • the prior art such as the buoyancy prevention device for the installation and dismantling should be at least two times under the formwork, the height of the slab is usually 2.5m or more, so you need to use an auxiliary device such as a ladder, to support the formwork
  • There were many obstacles such as clubbing, which made the work inconvenient and dangerous.
  • the conventional technology requires a separate labor force, there is a limit that the labor cost increases and the construction period is long.
  • the conventional buoyancy prevention device is bound by a method of hooking or inserting the hollow forming body in the reinforcing bar to prevent the injuries of the hollow forming body when placing slab concrete, the length adjustment is not easy, there was an inconvenience during construction.
  • the present invention is proposed to solve the conventional problems as described above.
  • the purpose is as follows.
  • the present invention in the construction of a two-way hollow slab by using a buoyancy prevention device of the hollow forming body provided in the two-way hollow slab, even if the concrete is poured, by restraining the rise of the hollow forming body to stably fix the position
  • the purpose of the present invention is to provide a buoyancy preventing device for hollow forming bodies and a method of constructing a two-way hollow slab using the same to ensure accurate coating thickness and rebar position.
  • the present invention provides a buoyancy prevention device of the hollow forming body buoyancy prevention device can be installed in a single person from the top of the slab formwork can be installed easily and safely and economically, and a two-way hollow using the same To provide a construction method of the slab.
  • the present invention is designed to be easily removed together with the formwork demoulding after concrete curing because the cut portion of the buoyancy prevention device of the hollow forming body is narrower than the width of other parts, the hollow forming does not require separate removal work in the lower slab formwork
  • An apparatus for preventing buoyancy of a sieve and a method of constructing a two-way hollow slab using the same are provided.
  • the present invention is to prevent the buoyancy of the hollow body to easily adjust the length of the buoyancy prevention device of the hollow body to the upper reinforcing and fastening to the upper reinforcement using the connection line, such as a half life or wire in the fastening groove formed on the upper surface.
  • An apparatus and a method of constructing a two-way hollow slab using the same are provided.
  • the present invention is to provide a device for preventing the injuries and a method of constructing a two-way hollow slab provided with a hollow forming body that can build a two-way hollow slab structurally stable while ensuring maximum hollow ratio. .
  • the present invention is inserted into the formwork hole formed in the formwork in order to prevent the rise of the hollow body to be installed in the hollow slab, in the form of a long rod, a fastening groove of a predetermined size on the upper surface Body portion provided; A rod-shaped member extending and coupled to a lower end of the body portion, the cut portion configured to have a shape narrower than the width of the body portion; And a member extending in the horizontal direction and coupled to a lower end of the cut portion, the catch portion being coupled to the cut portion in an inverted T-shape to be caught by the lower portion of the die, wherein the catch portion passes through the die hole.
  • the body portion is rotated by 90 ° to be caught in the lower portion of the formwork, the cutting portion is located on the same line as the formwork hole, and is separated from the body portion when the mold is demolded, the fastening groove and the hollow forming body of the body portion
  • the upper reinforcing bar is bound by a wire-shaped connecting line to provide a buoyancy prevention device of the hollow body, characterized in that to prevent the rise of the hollow body during the slab concrete pouring.
  • the present invention in the construction method of the two-way hollow slab using the buoyancy prevention device, (a) assembling and installing the formwork for the slab; (b) placing a lower reinforcing bar above the formwork; (c) arranging the hollow bodies in parallel in the longitudinal and transverse directions onto the lower reinforcing bars; (d) placing an upper reinforcing bar on the hollow forming body; (e) forming a die hole in the die and inserting and fixing a buoyancy prevention device in the die hole; (f) rotating the body portion of the buoyancy prevention device by 90 ° so that the locking portion is caught by the lower portion of the formwork, and the fastening groove and the upper reinforcing bar of the body portion are bound by a string-shaped connecting line; It provides a method of constructing a two-way hollow slab using a buoyancy prevention device of the hollow forming body, characterized in that it comprises a;
  • Figure 2 (a) is a perspective view of the buoyancy prevention device according to the invention
  • Figure 2 (b) is a cross-sectional view of the buoyancy prevention device according to the present invention.
  • Figure 3 (a) is one embodiment showing that the buoyancy prevention device of the present invention is fixed to the formwork
  • Figure 3 (b) shows one embodiment of Figure 3 (a) in a cross-sectional view.
  • Figure 4 shows the process of constructing a two-way hollow slab using the buoyancy prevention device of the present invention.
  • FIG. 5 is an exploded perspective view showing an embodiment in which the buoyancy prevention apparatus of the present invention is applied to a two-way hollow slab.
  • Figure 6 shows a cross-sectional view of the buoyancy prevention device according to the embodiment of Figure 5 applied to a two-way hollow slab.
  • Figure 7 shows a perspective view of the buoyancy prevention device according to the embodiment of Figure 5 applied to a two-way hollow slab.
  • hollow body 220 hollow part
  • spacer 280 binding body
  • Figure 2 (a) is a perspective view of the buoyancy prevention device 100 according to the present invention
  • Figure 2 (b) is a cross-sectional view of the buoyancy prevention device 100 according to the present invention.
  • the present invention is inserted into the formwork hole (FH) formed in the formwork (F) in order to prevent the rise of the hollow forming body 200 is installed in the two-way hollow slab, in the form of a long rod, a predetermined size on the upper surface
  • Body portion 120 having a fastening groove 122 of the;
  • a bar-shaped member extending and coupled to a lower end of the body part 120, and a cutting part 140 configured to be narrower than the width of the body part 120;
  • a member extending in the horizontal direction at the lower end of the cutting part 140 and coupled to the cutting part 140 and coupled to the cutting part 140 in an inverted T-shape to be caught by the lower portion of the formwork F.
  • the locking portion 160 is penetrated by the form hole (FH) and then rotated by the body portion 120 by 90 ° to be caught under the form (F), the cut portion 140 is the formwork Located on the same line as the hole (FH), the mold (F) is separated from the body portion 120 when demolding, is installed on the fastening groove 122 and the hollow forming body 200 of the body portion 120
  • the upper reinforcing bar (R2) is bound by the connecting line 300 in the form of a string, it characterized in that to prevent the injury of the hollow body 200 when the slab concrete (C) is poured.
  • the buoyancy prevention device 100 of the present invention is composed of a body portion 120, a cutting portion 140, the engaging portion 160.
  • Body portion 120 is configured in the form of a long rod protrudes to the upper formwork (F), the upper surface is formed with a fastening groove 122 through a predetermined area.
  • the body portion 120 is configured in the shape of a rectangular rod, but is not necessarily limited thereto.
  • the buoyancy prevention device 100 of the present invention is bound to the upper reinforcing bar (R2) holding the hollow forming body 200 from the top to prevent the rise of the hollow forming body 200 when slab concrete (C) is placed.
  • one end of the connecting line 300 such as half-life or wire, is fastened to the fastening groove 122 formed in the body part 120, and the other end of the connecting line 300 is fastened to the upper reinforcing bar (R2) to prevent buoyancy.
  • the device 100 and the upper reinforcing bar R2 are engaged. That is, the buoyancy prevention device 100 and the upper reinforcing bar (R2) is bound regardless of the length of the body portion 120, which improves the point that it was difficult to adjust the length of the buoyancy prevention device 100 in the conventional problem site. It is.
  • Cutting portion 140 is coupled to the lower portion of the body portion 120 is extended.
  • Cutting portion 140 is formed in a bar shape and the width is narrower than the body portion 120 is configured.
  • the cutting portion 140 is preferably composed of a width of 6 ⁇ 10mm, the length is the same as the thickness of the form (F). This is because the cutting part 140 is configured to be narrower than the width of the body part 120, so that the cutting part 140 can be rotated in the die hole FH and the end portion of the buoyancy prevention device 100 can be easily removed when the die F is demolded.
  • the engaging portion 160 is extended in the horizontal direction from the lower portion of the cutting portion 140, the combined form of the cutting portion 140 and the locking portion 160 is formed in an inverted T-shape as a whole.
  • a locking portion 160 has a length smaller than or equal to the die hole FH provided in the die F, and is positioned below the die F. Then, when the body portion 120 located above the formwork F is rotated by 90 °, the locking part 160 is also rotated so as not to fall into the formhole FH by being caught by the lower portion of the formwork F.
  • the buoyancy prevention device 100 is caught in a form in which the locking portion 160 is orthogonal to the formwork hole FH at the lower portion of the formwork F, and the fastening groove 122 of the body portion 120.
  • the connection line 300 is tightly connected to the upper reinforcing bar (R2) to prevent buoyancy of the hollow body 200.
  • Figure 3 (a) is an embodiment showing that the buoyancy prevention device 100 of the present invention is fixed to the form (F)
  • Figure 3 (b) is a cross-sectional view showing an embodiment of Figure 3 (a). .
  • the buoyancy prevention device 100 of the present invention can be applied not only to the conventional formwork (F), but also to the system formwork (F), such as standardized aluminum (F) and table-form.
  • the buoyancy prevention device 100 of the present invention when the buoyancy prevention device 100 of the present invention is applied to the conventional formwork (F), the double-tension line is installed in the longitudinal direction under the formwork (F) ( J) is further coupled, and the length of the cut portion 140 is equal to the sum of the thickness for the slab formwork F and the double long line (J), the locking portion 160 is the double long line (J) Can be caught at the bottom of the Double long line (J) means a member coupled to the lower portion of the form (F) in the form of a small beam.
  • a yoke under the form of a double joist (J) supporting the formwork (F) may be additionally installed, in which case the yoke may be directly connected to the supporter (aka support, support). .
  • buoyancy prevention device 100 of the present invention when the buoyancy prevention device 100 of the present invention is applied to the system formwork (F), it is easy to make a straight form hole (FH) between the modular formwork (F), buoyancy by securing sufficient formwork (F) rigidity Effective in prevention, there is an advantage that the gap between the buoyancy prevention device 100 can be secured uniformly.
  • Figure 4 shows the process of constructing a two-way hollow slab using the buoyancy prevention device 100 of the present invention.
  • the present invention is a method of constructing a two-way hollow slab using the buoyancy prevention device 100, (a) assembling and installing the formwork for slab (F); (b) placing a lower reinforcing bar R1 onto the formwork F; (c) arranging the hollow body 200 in the longitudinal and transverse directions in parallel to the lower reinforcing bars R1; (d) placing an upper reinforcing bar (R2) on the hollow forming body 200; (e) forming a die hole (FH) in the die (F) and inserting and fixing a buoyancy prevention device (100) in the die hole (FH); (f) the body portion 120 of the buoyancy prevention device 100 is rotated 90 ° so that the locking portion 160 is caught by the lower portion of the form F, and the fastening groove 122 of the body portion 120 is formed.
  • the present invention in the construction method of the two-way hollow slab using the buoyancy prevention device 100, (a ') assembling and installing the formwork for slab (F); (b ') reinforcing the lower reinforcing bar R1 in the main direction over the formwork F; (c ′) disposing a plurality of hollow bodies 200 in which lower reinforcing bars R1 and upper reinforcing bars R2 are coupled to the lower reinforcing bars R1 in the main bar direction; (d ') reinforcing the upper reinforcing bar (R2) in the main direction on the hollow forming body 200; (e ⁇ ) forming a die hole FH in the die F and inserting and fixing a buoyancy prevention device 100 in the die hole FH; (f ⁇ ) Rotating the body portion 120 of the buoyancy prevention device 100 by 90 ° so that the locking portion 160 is caught by the lower portion of the form F, the fastening groove 122 of the body portion 120 ) And binding the upper reinforcing bar (R2)
  • the present invention may be utilized by pre-assembling the upper reinforcing bar (R2) and the lower reinforcing bar (R1) in one direction (reinforcement bar direction) to the hollow forming body 200 as shown in FIG. That is, the lower reinforcing bar (R1) in the direction of the main reinforcement in the lower portion of the form (F) is installed, the preformed hollow forming body 200 is installed on the lower reinforcing bar (R1), and then the upper reinforcing bar (R2) in the direction above After reinforcement), the buoyancy prevention device 100 can be installed and the slab concrete (C) can be poured.
  • the hollow body 200 and the upper and lower reinforcing bars (R1, R2) in the direction of the reinforcement muscle is pre-assembled, not only the construction is easy, but also the construction period can be shortened to reduce the cost including labor costs.
  • the (f ⁇ ) step of the construction method of the two-way hollow slab using the buoyancy prevention device 100 is inserted into the locking portion 160 of the buoyancy prevention device 100 to be located under the form (F) body portion ( After the 120 is rotated by 90 °, the fastening groove 122 and the upper reinforcing bar (R2) of the body portion 120 is made to be fixed by binding with a half life or wire. As described above, since it can bind with the upper reinforcement (R2) regardless of the length of the body portion 120 can improve the workability.
  • FIG 5 is an exploded perspective view showing an embodiment in which the buoyancy prevention device 100 of the present invention is applied to a two-way hollow slab
  • Figure 6 is a buoyancy prevention device 100 according to the embodiment of FIG.
  • Figure 7 shows a cross-sectional view
  • Figure 7 shows a perspective view of the buoyancy prevention device 100 according to the embodiment of Figure 5 applied to the two-way hollow slab.
  • the hollow body 200 is buried in the slab concrete (C) so that the concrete is not filled in the installation space is to be composed of a member of lightweight concrete. That is, the hollow body 200 itself serves as a hollow.
  • the hollow body 200 is formed in the center of the three-dimensional body of the hollow section 220 of the circular cross-section and the corner is curved to form an overall shell of the rectangular donut shape
  • the inside of the envelope may be composed of an empty space 240.
  • the hollow part 220 is also filled with the slab concrete (C)
  • the concrete parts may be formed at regular intervals regardless of the size of the hollow body 200, the hollow slab may be structurally stable.
  • the space 240 further adds the lightness of the hollow body 200, and may be filled with insulation, soundproofing, and dustproof material depending on circumstances.
  • the hollow body 200 is provided with a plurality of spacers 260 protrudingly coupled at predetermined intervals on four sides as shown in FIG. 7, adjacent hollow body members 200 are spaced apart from each other by a predetermined interval.
  • a plurality of binding bodies 280 into which the upper reinforcement R2 and the lower reinforcement R1 are fitted may be provided on the upper and lower surfaces facing each other.
  • the binding body 280 also serves to allow the upper reinforcing bars R2 and the lower reinforcing bars R1 to be spaced apart from the slab at a predetermined interval (about the coating thickness).
  • the hollow forming body 200 may move left and right in addition to the injuries, and the spacer 260 may maintain the hollow forming body by maintaining a predetermined distance from side to side between the adjacent hollow forming bodies 200. 200) to be stable.
  • the spacer 260 of the hollow body 200 has a cross-shaped cross section as shown in FIG. 5, and the binding body 280 has a butterfly-shaped cross section. , R2) may be fitted by the elastic force, but is not necessarily limited thereto.
  • the hollow body 200 is provided with a plurality of bent portions 250 having a predetermined depth in the upper and lower surfaces, the synthetic force with the slab concrete (C) to be poured later is preferably increased.
  • the buoyancy prevention device of the hollow formed body according to the present invention to secure the precise coating thickness and reinforcement position of the slab concrete by stably fixing the position of the hollow formed by suppressing the rise of the hollow formed even when the slab concrete is poured It has the effect of increasing structural stability.
  • buoyancy preventing device of the hollow body according to the present invention can be easily applied to system formwork such as AL-form or Table-form as well as conventional formwork.
  • the present invention can be easily performed by a single person in the buoyancy prevention device installation of the hollow forming body, so that even the unskilled construction can be carried out not only shorten the construction period but also reduce the cost.
  • the present invention is designed to be narrower than the other parts of the buoyancy prevention device after curing the concrete is removed with the formwork demoulding to improve the workability and reduce labor costs.
  • connection line such as the reinforcement or wire to the fastening groove formed on the upper surface of the buoyancy prevention device of the hollow body formed by binding with the upper reinforcing bar.
  • the present invention can construct a structurally strengthened two-way hollow slab because it uses a rectangular donut-shaped hollow formed body provided with a hollow in the center and then fixed it with a buoyancy prevention device to fill the slab concrete.

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  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
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  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

La présente invention se rapporte à des appareils insérés dans des trous de forme formés dans une forme de sorte à empêcher la flottation de corps à noyau creux installés dans une dalle à noyau creux et concerne également un procédé permettant de construire une dalle bidirectionnelle à noyau creux en utilisant des appareils destinés à empêcher la flottabilité, les appareils comprenant : une partie de corps sous la forme d'une longue tige et comportant une rainure de couplage d'une taille prédéterminée formée dans la surface supérieure de celle-ci ; une partie coupante, qui est un élément en forme de tige s'étendant depuis l'extrémité inférieure de la partie de corps et couplée à ladite extrémité inférieure et présente une largeur inférieure à celle de la partie de corps ; et une partie d'accrochage, qui est un élément s'étendant horizontalement depuis l'extrémité inférieure de la partie coupante et couplée à ladite extrémité inférieure et est couplée à la partie coupante de manière à réaliser une forme de T inversé, et saisi par la partie inférieure de la forme, après avoir traversé un trou de forme, la partie d'accrochage étant attrapée par la partie inférieure de la forme par rotation de la partie corps de 90° ; la partie coupante étant colinéaire au trou de forme et séparée de la partie de corps lorsque la forme est retirée ; et la rainure de couplage de la partie de corps et une barre de renforcement supérieure reliée à un corps à noyau creux étant reliées par une ligne de liaison sous la forme d'un fil, ce qui permet d'empêcher la flottation du corps à noyau creux au moment du coulage d'une dalle de béton.
PCT/KR2014/006321 2014-05-30 2014-07-14 Appareils destinés à empêcher la flottabilité de corps à noyau creux et procédé permettant de construire une dalle bidirectionnelle à noyau creux en utilisant ces derniers WO2015182818A1 (fr)

Applications Claiming Priority (2)

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KR1020140065992A KR101527716B1 (ko) 2014-05-30 2014-05-30 중공형성체의 부력방지장치 및 이를 이용한 2방향 중공슬래브의 시공방법
KR10-2014-0065992 2014-05-30

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CN111764639A (zh) * 2020-06-02 2020-10-13 中国华冶科工集团有限公司 空心板芯模加固、方法
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KR101707942B1 (ko) 2016-07-04 2017-02-27 삼표피앤씨 주식회사 프리캐스트 콘크리트 중공슬래브 및 이의 제조방법
KR101845841B1 (ko) * 2016-08-25 2018-04-06 주식회사 유경시스템 중공 경량체 및 이를 이용한 중공슬래브 구조물
KR101922081B1 (ko) * 2016-11-11 2018-11-27 삼성물산(주) 중공슬래브용 일체형 팰럿 타입의 슬래브 거푸집유닛, 이를 이용한 중공슬래브용 팰럿 타입 테이블폼 및 중공슬래브 시공방법
CN114607150B (zh) * 2022-03-01 2023-02-17 江苏启安建设集团有限公司 一种降本增效的便携式楼板厚度控制装置

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