Search

KR-20260067017-A - Gangform lifting system and building exterior wall construction method using the gangform lifting system thereof

KR20260067017AKR 20260067017 AKR20260067017 AKR 20260067017AKR-20260067017-A

Abstract

The present invention comprises: a gang form that is positioned on the outer wall of a building to provide a concrete pouring surface; a work platform installed on the outer side of the gang form to provide a workspace and on which a platform for a worker to pass is installed; and a mounting bracket that is installed protruding from the outer side of the work platform and positioned at a location away from the workspace; and a plurality of guide rails installed spaced apart from each other in a horizontal direction along the outer wall of a building to guide the direction of movement so that the gang form cage can be raised and lowered. The present invention relates to a gang form lifting system and a method for constructing the exterior wall of a building using said gang form lifting system, wherein the hydraulic system comprises a hydraulic cylinder installed on the exterior wall of a building and raising the gang form cage upward along the guide rail, a hydraulic pump installed within the mounting bracket at a location away from the workspace of the work platform, and a hydraulic hose connecting the hydraulic pump and the hydraulic cylinder to each other to transmit hydraulic pressure from the hydraulic pump to the hydraulic cylinder, wherein the hydraulic pump positioned away from the workspace supplies hydraulic pressure to the hydraulic cylinder without interfering with the work of a worker.

Inventors

  • 진원종
  • 김영진
  • 윤혜진
  • 이재흔
  • 구정모
  • 우준서

Assignees

  • 한국건설기술연구원
  • 주식회사 선진알씨에스

Dates

Publication Date
20260512
Application Date
20241105

Claims (11)

  1. A gang form cage (20) comprising a gang form (21) positioned on the outer wall of a building to provide a concrete pouring surface, a work platform (22) installed on the outside of the gang form (21) to provide a workspace and on which a step (221) is installed for a worker to pass, and a support (23) protruding from the outside of the work platform (22) and positioned at a location away from the workspace of the work platform (22); A plurality of guide rails (30) installed horizontally spaced apart from each other along the outer wall of the building and guiding the direction of movement so that the gang form cage (20) can be raised and lowered; and It includes a hydraulic system (40) that causes the gang form cage (20) to rise upward along the guide rail (30); The hydraulic system (40) comprises a hydraulic cylinder (41) installed on the outer wall of a building and raising the gang form cage (20) in an upward direction, a hydraulic pump (42) installed in a mounting bracket (23) at a location away from the workspace of a work platform (22), and a hydraulic hose (43) connecting the hydraulic pump (42) and the hydraulic cylinder (41) to each other to transmit the hydraulic pressure of the hydraulic pump (42) to the hydraulic cylinder (41); A gang form lifting system characterized by a hydraulic pump (42) positioned away from the workspace, which supplies hydraulic pressure to a hydraulic cylinder (41) without interfering with the worker's work.
  2. In paragraph 1, The above gang form cage (20) is divided into a plurality of unit modules in the horizontal direction, and each unit module can rise and fall independently, and a plurality of guide rails (30) are installed on the gang form cage (20) so that each unit module can rise and fall. The mounting bracket (23) is placed in one of the multiple unit modules of the gang form cage (20), and A gang form lifting system characterized by the fact that when lifting unit modules of a gang form cage (20) sequentially using hydraulic cylinders (41), hydraulic pressure from a hydraulic pump (42) is sequentially supplied to each hydraulic cylinder (41) used for each lifting.
  3. In paragraph 2, The hydraulic hose (43) has a length-adjustable structure, and A gang form lifting system characterized by being able to adjust the length of the hydraulic hose (43) according to the distance between the unit module of the gang form cage (20) in which the mounting bracket (23) and the hydraulic cylinder (41) are installed, and connect the hydraulic hose (43) to the hydraulic cylinder (41) installed in the unit module of the gang form cage (20) that requires lifting.
  4. In paragraph 3, A gang form lifting system characterized by, after completing the lifting operation of one unit module of a gang form cage (20), placing a hydraulic cylinder (41) in another unit module of a gang form cage (20) adjacent to the unit module, and connecting a hydraulic hose (43) to the hydraulic cylinder (41) to supply hydraulic pressure from a hydraulic pump (42) to proceed with the lifting operation of the unit module.
  5. In paragraph 4, A formwork lifting system characterized in that a hydraulic cylinder (41) for one unit module of a formwork cage (20) is separated after the lifting of the corresponding unit module is completed and installed on the side of another unit module that requires lifting.
  6. In paragraph 1, A gang form lifting system characterized in that the mounting bracket (23) is positioned in the middle of the multiple unit modules of the gang form cage (20), and the hydraulic pump (41) is fixedly installed on the mounting bracket (23).
  7. In paragraph 6, A formwork lifting system characterized by the mounting bracket (23) being fixedly installed on the guide rail (30) by means of an upper support member (24) and a lower support member (25).
  8. In Paragraph 7, A gang form lifting system characterized by the upper support member (42) being formed by an upper support member (241) that is installed protruding toward the front of the gang form cage (20) and positioned above the mounting bracket (23), and an inclined support member (242) that connects the upper end of the upper support member (241) and the upper end of the mounting bracket (23) at an angle to each other.
  9. In Paragraph 7, A gang form lifting system characterized by the lower support member (25) being composed of a lower support member (251) that connects the lower end of the mounting bracket (23) and the guide rail (30), and is installed to be inclined downward as it approaches the guide rail (30).
  10. As a method for constructing the exterior wall of a building using a gang form lifting system, The above-mentioned gang form lifting system is a gang form lifting system according to claim 1, and (a) A step of installing a hydraulic pump (42) in a mounting bracket (23) which is provided in one of the multiple unit modules of a gang form cage that can be independently raised and lowered and is positioned away from the workspace of a work table (22); (b) a step of supplying hydraulic pressure from a hydraulic pump (42) to a hydraulic cylinder (41) for operating a unit module to raise a unit module of a gang form that requires raising; (c) A step of separating the hydraulic cylinder (41) from the building outer wall where the unit module of the gang form cage (20) that has been raised is located, and then installing the hydraulic cylinder (41) on the building outer wall where another adjacent unit module that has not been raised is located; (d) a step of extending the length of the hydraulic hose by connecting an additional hydraulic hose to the hydraulic hose (43) connected to the hydraulic pump (42) so as to access another unit module; and (e) a step of connecting a hydraulic hose to a hydraulic cylinder (41) placed in a unit module that has not been raised to raise another unit module; a method for constructing an exterior wall of a building using a gang form lifting system, characterized by including the step of raising another unit module.
  11. In Paragraph 10, A method for constructing the exterior wall of a building using a gang form lifting system, characterized in that one of the unit modules of the gang form cage (20) equipped with a hydraulic pump (42) is a unit module positioned in the center among a plurality of unit modules forming the gang form.

Description

Gangform lifting system and building exterior wall construction method using the gangform lifting system thereof The present invention relates to a gang form lifting system and a method for constructing a building exterior wall using the same. More specifically, the invention relates to a gang form lifting system configured to sequentially lift gang forms for pouring concrete forming a building exterior wall, wherein a hydraulic pump generating hydraulic pressure for lifting the gang forms is installed on a mounting bracket outside the work platform, away from the workspace, so as not to interfere with the movement or work of the worker; the hydraulic hose supplying the hydraulic pressure can be adjusted in length to suit the position of the gang forms to be lifted, thereby enabling the lifting of multiple gang forms with a small number of hydraulic pumps; and a hydraulic cylinder is positioned in a unit module located in the center of multiple unit modules to minimize movement paths, thereby reducing construction time, improving constructability, and reducing construction costs. The invention also relates to a method for constructing a building exterior wall using the same. In constructing buildings such as high-rise apartments where the floor plan of the upper and lower levels is identical, a "Gangform Climbing System" is used. This system utilizes a cage integrally connected to the formwork, equipped with scaffolding for the installation and dismantling of exterior wall formwork and for plastering and finishing (rendering) work. As the building is constructed sequentially upward, the cage is lifted and raised together with the formwork. Prior art related to gangform climbing systems is described in Korean Registered Patents No. 10-1436062 and No. 10-2387167. For convenience, the cage equipped with such a gangform is referred to as a "gangform cage" in this specification. In a gang form lifting system, a guide rail is installed that is raised vertically along a reinforced concrete structure by a hydraulic cylinder. A gang form cage is coupled to the guide rail. In this gang form lifting system, the guide rail is raised by the hydraulic cylinder while the guide shoe installed on the outer wall of the building is engaged with the guide rail, and consequently, the gang form cage coupled to the guide rail also rises upward. Specifically, when a reinforced concrete building is constructed to a certain height, a guide shoe is installed on the outer wall of the building, and a guide rail is movably installed on the guide shoe. Then, the guide rail is raised using a hydraulic cylinder. Since the gang form cage is coupled to the guide rail, the gang form cage rises together with the guide rail when the guide rail rises. As the gang form cage is equipped with a work platform to form a workspace, a worker installs formwork (gang form) for concrete pouring and pours concrete within the workspace of the gang form cage, thereby constructing the building through this process. This gang form lifting system has the advantage of improving work efficiency because it allows building construction to proceed by raising guide rails via hydraulic cylinders without using cranes. In concrete buildings such as apartments, multiple gang forms are installed as unit modules on a flat surface, and the work of lifting each unit module individually by hydraulic cylinders is performed. Conventionally, methods were used in which hydraulic pumps were installed at each unit module to supply hydraulic pressure, or in which a small number of portable hydraulic pumps were moved to supply pressure. If hydraulic pumps are installed at each unit module, a large number of hydraulic pumps are required during the building construction process, resulting in increased construction costs. When using portable hydraulic pumps, they are sometimes placed within narrow work platforms used by workers. Since the pump is positioned on the work platform, it acts as an obstacle to workers performing various tasks or moving around. As a result, this leads to reduced work efficiency and prolonged construction periods. In addition, there are cases where portable hydraulic pumps are placed inside the building (on the upper surface of the slab of an already constructed building). Unlike installation on a work platform, this does not restrict the workspace; however, because the building's interior has a complex structure and is littered with various obstacles, moving the pumps inside requires a significant amount of time, which acts as a factor in extending the construction period. FIG. 1 is a schematic plan of an exemplary building with gang forms installed on the exterior walls. FIG. 2 is a schematic diagram showing one of the gang form cages of a unit module rising independently in a gang form lifting system according to the present invention. Figure 3 is a schematic enlarged view of the circle A portion shown in Figure 2. Figure 4 is a schematic diagram showing the