• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 춘계 학술논문 발표대회
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• pp.72-73
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• 2014

Recently the concurrent construction method of framework and windows work has been applied for early beginning of exterior finishing works in tall building construction. However, the conventional method makes difficulties in auto-climbing of gang-form and climbing work of lift car since the removal of ACS(auto climbing system) should be preceded for operation of lift car up to the top floor. This study propose a concept model of integrated ACS and lift car system to resolve these problems and begin windows works early in tall building construction.

• 대한건축학회논문집:구조계
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• 제35권7호
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• pp.171-178
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• 2019

Auto Climbing Formwork System (ACS) for construction of high-rise building is a construction method for automatically lifting the formwork system supported by the anchor on the pre-constructed concrete wall. It has excellent construction speed and quality, but it has the possibility of structural failure depending on the quality of concrete and also has low economical efficiency due to the use of foreign technology. In order to overcome these problems, this study conducted an optimum design for the development of a new concept of Corner Supported Auto Climbing System (CS-ACS) in conjunction with the development of corner steel-reinforced concrete core wall system. For the design the formwork system, the basic module and structural member compositions were planned, and the structural analysis program was used to analyze the optimum member's cross section and spacing. As a result, the horizontal displacement and the stress of the horizontal members were influenced by the spacing more than the cross-section of the member. On the other hand, vertical members did not affect the displacement and stress of the formwork system. The form tie was very effective in controlling the displacement when adjusting the spacing of the horizontal members, but when the spacing of the form tie is more than 1,500mm, it is analyzed that form tie is yielding in basic module. When the span of the formwork system is more than 30m, it is analyzed that the basic module needs to be changed because of the increase of overall displacement.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 추계 학술논문 발표대회
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• pp.114-115
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• 2019

Gangform is used as exterior wall forms in the most of apartments. Existing system forms developed for high-rise building, RCS and ACS, are too heavy and over-designed to be applied to general apartments, leading to higher costs. A more simplified rail Gangform(R/GF) is also used, but it depends entirely on T/C for the lift like Gangform. The T/C's legal inactivity time for moving Gangform and materials has increased, and the higher allowances have to be paid for overtime work, thus causing to the cost increase and time delay. Therefore, this study aims to develop an automated Gangform climbing system that can be used universally and economically in apartment houses. The use of the development system is expected to improve the safety of Gangform operations and reduce the workload on T/C.

• 한국건설관리학회논문집
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• 제13권1호
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• pp.53-66
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• 2012

갱폼은 기존 목재 및 철재 거푸집과 비교하여 매 사용 시 작은 부재의 조립/해체를 반복하지 않고 대형화, 단순화를 통해 한 번에 설치하고 해체할 수 있는 시스템화 된 거푸집이다. 그러나 ACS(Auto Climbing System)와 같은 첨단 거푸집에 비해 경제성을 제외한 다른 측면(생산성, 안전성, 품질 등)에 있어서는 1) 타워크레인 양중부하 증가, 2) 갱폼 인양 중 안전사고 증가, 3) 갱폼 박리 작업 생산성 저하, 4) 기후 영향으로 인한 작업 중지, 5) 생산성, 노무비, 품질 저하 등의 문제점을 지니고 있는 것으로 조사되었다. 따라서 본 연구에서는 타워크레인의 부하를 감소시킴과 동시에 인양 속도를 향상시킴으로써, 작업 생산성 향상 및 노무자 안전성 확보, 콘크리트 구조체의 품질 등을 향상시켜 공동주택 건설 현장에서 범용적으로 사용가능한 공동주택 전용 갱폼 인양 자동화 장비의 개념 모델을 제시하고자 한다. 이를 위해 본 연구에서는 기존 문헌 분석 및 건설 현장관리자와의 설문조사를 수행하여 공동주택 전용 갱폼 인양 자동화 기술 개발 시 요구되는 고려요소 도출 및 효용성 분석 등을 통해 '공동주택 전용 갱폼 인양 자동화 장비의 개념 모델'을 제시하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 춘계 학술논문 발표대회
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• pp.9-10
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• 2012

According to the recent trends in the construction business have been actively booming both overseas plant orders and high-rise buildings orders. In addition high-rise building projects have being promoted or is actually under construction in Korea. Frame structure review which is the most consuming period on high-rise building is essential on that project. In this study looks for the currently form system and compares to those large system used in high-rise buildings.

• Architectural research
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• 제14권3호
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• pp.109-116
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• 2012

In order to shorten construction duration in high-rise project, construction company tried to make various system method toward simplifying construction method and shortening construction duration. Though high-rise tower-type residential project are growing, there are few case study. Then, the data for preliminary schedule planning in high-rise tower-type residential project are rare. This purpose of research shows construction method in structural work in high-rise tower-type residential project, suggests schedule planning in structural work through case studies. The structural work in high-rise tower-type residential project was divided 1) completion of form in lower part and 2) the typical floor under penthouse. The statistical analysis were done in two parts, the data from analysis were used in simulation. Finally, researcher confirmed the difference between real construction duration and the figure from simulation. The results shows that the more construction duration is long, the less ACS's cost is low. It means the effectiveness is increasing in ACS, if the floor number is high.