This study is to establish a structural analysis method that can apply a unit modular system to a remodeling extension. Structural design has to be performed after considering the behaviors between the existing structures and the modular system because the modular system is added after the transformation of existing structures has been processed. The structural analysis process, which can reflect the behaviors between the existing building and the modular system, is introduced in a five-staged structural analysis.

Modular Housing has benefits to reduce the production time on-site and cost down. It is possible to expand the space by connecting the unit. For this reason, recently, modular remodeling market is growing. this study is suggests plans for modular housing remodeling process.

Based on the study of chloride migration coefficient and hydration heat evolution, it was found that the use of ternary blended cement was effective to achieve desired service life and minimum crack index. On the other hand, a high level of compressive strength is required for marine concrete mix design.

In this study, we have proposed a modular construction method can lower the reinforcement cost of the building, to shorten the construction period. We have developed a Mock-up, it is intended to use as basic data to the activation of the vertical extension of future reform.

This paper is a aim to develop a connection modular-to-foundation that can be adapted using steel-frame middle & high-rise of the modular units. Analysis results, embedded column length is somewhat greater stiffness and strength were highly appreciated. Reduced embedded length even if the length of the base is not a problem for ensuring highly fixed.

The SPC wall girder is connected to the vertical walls to enhance performance of wall-wall girder connection. The purpose of this study is to investigate the structural characteristics such as strength, Load-displacement relation of wall-wall girder connection under the cyclic load tests. The fracture pattern of the specimens was steel plate separation from concrete in SPC Wall induction of tensile crack failure of SPC Wall concrete.

The SPC wall girder is connected to the vertical SPC walls to enhance performance of wall-wall girder connection. The fracture pattern of the SPC wall-wall girder connection was steel plate separation from concrete in SPC Wall. The purpose of this study is to theoretical analysis on fracture behavior of the SPC wall-wall girder connection under the monotonic load test inducing positive moment at connection. The Plastic hinge theory on steel plate of SPC wall girder is proposed to explain steel plate separation fracture pattern.

In case of Enlargement method using Post-installed Anchors, mechanical expansion anchors were resisting tensile and shear force of Modular extension structure in exist building. The purpose of this study is to investigate strength of Post-installed Anchor on 16 MPa low strength Concrete under less than standard effective depth(hef). The fracture pattern of the specimens in Pull-out tests was pull-out failure and the strength showed 19% less than that of the design strength on test anchor manufacturer. In cyclic load shear tests the fracture pattern was steel failure of anchor and the strength showed 10% less value than that.

In this paper, the dry solution for restraining the buckling failure of steel brace with the semicircle springs is presented. Finite element analysis shows that the effects of restraining the bucking of brace can be achieved if the structure of semicircle springs is designed appropriately.

In this Study, lateral load resistance system is proposed to apply 12 story modular buildings to which X and inverted-V bracing is applied. The purposed system is analytically evaluated to determine the feasibility. As results, the inverted-V bracing is best suited for core system of 12 story modular building.

To strengthen the competitiveness of the domestic precast concrete industry, any legal or institutional measures for a guarantee of quality and safety standards are required. So, the overseas cases for precast concrete certification program were investigated and analyzed to present the new certification program in Korea.

The purpose of this study is to develop structral technologies on the lightweight composite slab systems with sound reduction layers in the modular house. In this study, two kinds of slabs with minimum thickness was suggested reducing the floor impact sound. In order to evaluate the structural performance, the flexural strenth tests were carried out on the one-way full scale specimens. From the results of test, we know that the proposed slabs had ductile behavior and would be safe sufficiently.

본 논문의 목적은 경량기포모르터를 충전한 스틸스터드와 복합스터드 내력벽체의 내화성능을 KS규준에 따라 평가하는데 있다. 주거용과 상업용 건물의 최소 내화 요구시간은 2시간이다. 시험 결과로부터 스틸 스터드와 복합스터드에 경량기포 모르터를 충전한 두 시험체 모두 2시간 내화 성능을 만족하는 것으로 나타났다. 또한 복합스터드 패널 시험체의 경우 내화 성능면에서 스틸 스터드 패널 시험체 보다 우수하다는 것을 정량적 평가하였다.