• 토지주택연구
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• 제14권1호
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• pp.115-122
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• 2023

최근 Covid-19 및 건설현장 인력 고령화 등으로 인하여 공동주택 생산성은 악화되고 있는 실정이다. 이에 탈현장(Off-Site Construction) 기반의 공장생산 방식으로의 공동주택 건설 방향 전환이 필요하다. 모듈러 공법은 공기단축이 가능하여 스마트 건축시스템으로 각광받고 있다. 이 연구에서는 모듈러 공법의 공기단축을 극대화 할 수 있는 PC코어 시스템을 개발하고, 구조성능을 해석적 연구를 통하여 검증하였다. 제안된 PC코어 시스템은 완전 PC형태로 이루어져 있으며, 접합방식은 건식 접합이다. 연구 결과, 제안된 PC코어 시스템은 모듈러 주택에 사용가능한 구조성능을 확보한 것으로 나타났다.

• 한국공간구조학회논문집
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• 제21권3호
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• pp.69-76
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• 2021

Precast concrete (PC) modules have been increased its use in modular buildings due to their better seismic performance than steel modules. The main issue of the PC module is to ensure structural performance with appropriate connection methods. This study proposed a PC modular beam system for simple construction and improved structural and splicing performance. This modular system consisted of modules with steel plates inserted, and it is easy to construct by bolted connection. The steel plates play the role of tensile rebar and stirrup, which has the advantage of structural performance. The structural performance of the proposed PC modular beam system was evaluated by flexural test on one reinforced concrete (RC) beam specimen consisting of a monolithic, and two PC specimens with the proposed PC modular beam system. The results demonstrated that the proposed PC modular beam system achieved approximately 86% of the structural performance compared to the RC monolithic specimen, with similar ductility of approximately 1.06 fold greater.

• 한국공간구조학회논문집
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• 제21권4호
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• pp.65-72
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• 2021

The Precast concrete(PC) modular structures are a method of assembling pre-fabricated unit modules in the construction site. The essential aim of modular structures is to introduce a connection method that can ensure splicing performance and effectively resist shear strength. This study proposed PC module using a connecting plate that can replace splice sleeves and shear keys used in the conventional PC modular structures. To evaluate the splicing performance and shear capacity of the proposed method, the shear test was conducted by fabricating one monolithic reinforced concrete(RC) beam and two PC modular beams with a shear span-to-depth ratio as variables. The experimental results showed that the shear capacity of the PC modular beam was about 89% compared to that of the RC beam, and showed a failure of the RC beam according to the shear span-to-depth ratio. Therefore, it was considered that the connecting plate effectively transferred the stress between each PC module through the joint and ensure integrity. In addition, the applicability of shear strength equation of ACI 318-19 and Zsutty's equation to PC modular beams were evaluated. Results demonstrated that the improved shear strength equations are needed to consider reduction of shear strength in PC modules.

• 한국강구조학회 논문집
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• 제29권6호
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• pp.435-442
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• 2017

모듈러 건축물을 중고층화하기 위해 횡력저항시스템은 반드시 필요한 구조 요소로 10~20층 규모에서 콘크리트 코어는 가장 전형적인 횡력저항시스템으로 알려져 있다. 습식 공법인 콘크리트 코어 공사는 모듈의 오염과 파손 가능성으로 모듈 적층과의 동시 작업이 곤란하다. 이에 모듈 적층과 콘크리트 코어의 동시 시공이 가능한 복합 PC 패널 공법을 개발하였다. 복합 PC 패널은 일정 간격을 두고 웨브가 마주보는 한 쌍의 C형강을 콘크리트 벽체의 상부와 하부에 결합한 구조 부재로 볼트로 접합하여 적층하는 건식 공법으로 콘크리트 코어를 구축할 수 있다. 이 연구에서는 복합 PC 패널이 콘크리트 벽체와 동등한 성능을 갖도록 해석을 통해 상세 개선 과정을 제시하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 봄 학술논문 발표대회
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• pp.14-15
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• 2020

The need for off-site construction has increased in the construction industry in Korea in recent years due to the enforcement of the 52-hour workweek, the increasing age of workers on construction sites, the deepening dependence on overseas workers, and the stagnation of productivity in the construction industry. Thus, studies on OSC started in April 2020. In addition, as a national policy study advocating the modular construction method, which is one of the OSC methods, was completed in the first half of 2019. 70 housing units in two complexes that satisfied the Housing Act requirements have been supplied to citizens. However, although modular construction methods have been recognized as a dramatic construction method that achieves shortened construction schedules and solves the issues of cost reduction and the shortage of technical workers on sites by combining the advantages of the manufacturing industry and applying the economies of scale, realistically it has issues due to the rising cost of steel and a low pre-fabrication ratio. Moreover, the construction time of core parts, such as those built by pouring concrete, has become a factor that hinders the shortening of construction times. Thus, this study aims to propose a precast concrete(PC) modular construction system, which fuses three-dimensional infill as an interior finish material and a three-surface PC module that can acts as a structure for a construction method that is economical and can shorten construction time.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.27-28
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• 2023

Currently, the Off-Site Construction (OSC) construction method, which emphasizes the minimization of field work, is being emphasized at construction sites due to the lack of construction skilled manpower, extreme weather, and the Severe Disaster Punishment Act. In this study, we developed a stacked PC modular, which is a method of stacking PC modules, and solved the lifting problem by reducing the weight of the unit module, which is emerging as the biggest disadvantage of PC modules, to around 20 tons. For the connection between modules, structural safety was secured through repeated history tests of the wall and slab connection. Walls and slabs satisfied all statutory fire resistance times through fire resistance tests, and residential performance was evaluated to be satisfactory through mock-up demonstration. The developed PC modular has been applied to the construction of commercial houses, detached houses, shopping malls, churches, etc., and has design results for many buildings such as dormitories, detached houses with 4 floors or more, and resorts, so it is expected that an atmosphere of revitalization of construction methods will be created.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.87-88
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• 2023

In accordance with changes in the domestic construction environment, interest in off-site construction methods (factory-manufactured construction methods) including modular construction methods is rapidly increasing. Among various off-site (OSC) construction methods, the front runner is the steel-based box-type modular construction method. Compared to the existing wet construction method, the steel modular construction method is increasing in terms of securing economic feasibility by shortening the construction period and increasing the prefabrication rate. However, due to the recent rise in raw materials and a sharp rise in the exchange rate, the economic feasibility of the wet method is deteriorating compared to the wet method. Therefore, a hybrid between 9-Matrix-based OSC construction methods is considered as a solution, away from the steel-box type combination, and a comparative study of the construction process between each construction method is being conducted. It was analyzed that the PC modular construction method shortened the construction period by 9% compared to the existing steel modular construction method. On the other hand, when comparing the construction period of the Gayang-dong demonstration complex calculated assuming that all modules are applied, it is estimated that there will be a 12% reduction in construction period compared to the steel modular method and a whopping 43% compared to the RC method.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.121-122
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• 2023

Existing modular research has been mainly focused on S (shelter structure) and I (infill interior finishing material), and considerable research has been conducted, and the results are being proposed. However, in the case of the rest (exterior materials and windows, etc.), existing construction methods and materials are borrowed, and supporting hardware members and insulation materials are constructed on site, which acts as a factor hindering overall shortening of the construction period. That is, since the advantages and characteristics of modularity cannot be utilized in the absence of modular cladding, manufacturing of cladding is required. Therefore, it is necessary to develop a cladding system that can drastically reduce the construction period in factories while considering the structural characteristics of PC modulars.

• 대한건축학회논문집:구조계
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• 제34권9호
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• pp.11-18
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• 2018

As the height of the modular buildings increases, their stability becomes more and more dependent on the core. All traditional construction methods in structural concrete and steel can be utilized for cores in modular buildings but a core system with dry connection is more desirable to complete a greater degree of factory finish and faster erection of modular buildings. In order to do that, the hybrid PC(precast concrete) panel, which has a pair of C-shaped steel beams combined at the top and bottom of a concrete wall, was developed, In this study the cyclic lateral loading test on the hybrid PC panel is carried out and the panel configurations are examined to enhance the structural performance in comparison with the RC wall. Experimental results show that the strength of hybrid PC panel is about 70% of thar ot RC wall and the anchorage of vertical reinforcing bar welded to C-shaped steel beam needs to be improved.

• 디자인학연구
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• 제19권2호
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• pp.333-342
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• 2006

소비자들은 과거의 성능에 집중된 선택에서부터 PC의 기능성에 주목하는 새로운 시각으로 점차 변화하고 있다. 본 연구에서는 주거 편의 시설 속에서의 사용자 요구와 유비쿼터스 환경이 맞물려 생성된 새로운 제품으로서의 맞춤형 컴퓨터로 범위를 제한하였다. 현재의 컴퓨터시장을 분석하여 가정 내 유비쿼터스 구현에 잠재된 가능성이 가장 높은 방식과 디자인 고려사항들을 제시하는 것에 본 연구의 목적이 있다. 현재의 컴퓨터시장을 분석한 결과 조립형PC의 일환인 베어본 PC가 가정 내 유비쿼터스 시스템 구현에 가장 현실적인 방법으로 확인되었다. 본 연구는 베어본 PC의 모듈화에 관한 것으로, 모듈러 시스템을 도입한 차세대 신개념 베어본 PC의 잠재된 가능성을 제시하였다. 기존의 베어본 PC는 반제품 PC의 개념이나, 본 고에서는 생활 가전의 영역을 연결하는 확장된 모듈화 베어본 PC를 제안하였다. 사용자의 이용 환경과 목적에 따라 특화된 기능을 제공하며 이제 적합한 형태로 제시할 수 있는 고객 맞춤화 PC디자인의 가능성을 상관요소분석과 우선순위 그리고 모듈화 요소분석을 통하여 검증하였다.