Main topics in this study is a new structural detail for connection between H-Steel or SRC column and flat plate slab. We carried out to evaluate the punching shear performance of H-steel or SRC column + RC slab system for vertical load and lateral load. From the test results structural characteristics - yield moment, yield rotation, maximum moment, deformation capabilities ect. - are obtained and evaluated. In this paper as a shear reinforcement for supporting region of plate closed stirrup type and shear band are used, and their test results are compared.

An experimental study was carried out to evaluate the punching shear performance of H-steel column + RC slab system for vertical load. Three specimens were constructed for interior column-slab system. All specimens were the same configuration and material properties except for columns such as RC column+flat plate slab and H-Steel column+flat plate slab. From the test results structural characteristics (maximum proof stress, maximum displacement, deformation capabilities and so on) are obtained and evaluated.

The flat plate slab system have many good features, which are design flexibilities, saving of story-height and economy of construction etc. But the study of flat plate slab system for H-steel column have been rare both at home and abroad. Recently high-rise residential and commercial buildings have been constructed in urban areas in Korea. The suggested dowel connection system is more likely to adoptable because it remarkably contribute to save inter story height and also to have many advantages compared with conventional steel works such as H-Steel frame + Deck plate slab system. This study aims at developing design method and program for connection between H-Steel column and flat plate slab system, which contribute to save significantly inter-story height.

This study presents an experimental study of the structural behavior for steel plate-concrete column-to-steel girder connections. Experiments were carried out to investigate the moment-rotation characteristics, failure behavior and ultimate moment capacity of these connections. The results of this experimental study involving three welded moment-resisting connections subjected to cyclic loading are presented. The specimens were fabricated at full scale to evaluate their hysteretic behavior. A description of the test specimens, the details of the joint, the test system and the testing methods are described. The test results showed that the structural behavior of these composite connections was influenced by the connection details.

최근 도심지에 건설되는 건축물의 초고층화는 기둥에 작용하는 하중을 증가시켜 기둥단면 증가와 사용면적 확보의 어려움을 발생 시키고 있다. 이에 최근에는 CFT와 같은 합성기둥의 사용이 증가하고 있는 추세이다. 그러나 CFT 기둥의 경우 폐단면으로 이루어져 있어 보- 기둥 접합부 개발의 어려움과 성능저하의 문제가 발생하게 된다. 특히, 원형CFT 기둥과 외다이아프램을 이용한 접합상세 개발의 연구가 미비 한 실정이다. 이에 본 연구에서는 Y형 플레이트를 적용한 원형 CFT 기둥-H형강 보 접합부 접합상세를 개발하여 Y형 플레이트를 적용한 접합 부 구조성능에 영향을 미치는 Y형 플레이트 폭 및 두께를 주요변수로 설정하여 실험을 통해 구조성능을 평가하였다. 또한 실험체에 사용된 Y 형 플레이트는 설계기준에 제시된 장기허용인장력이 Y형 플레이트에 접합된 인장 측 플랜지의 축방향력 이하가 되도록 설계하여 파괴형태를 통해 Y형 플레이트의 구조적 안전성과 성능을 확인하고자 한다.

The result of structural performance evaluation about circular CFT column-H shape steel beam which was performed as in previous study, even though we designed the Y type plate tension as below the axial force which was under design criteria, the flexure of steel beam was happened. For these reasons, in this study, to figure out the time of connections failure and the minimum value of parameters in order to evaluate the performance of advanced Y type plate in detail.

구조물의 우발적인 붕괴가 발생할 경우, 기둥 또는 기둥군(群)에 낙하물에 의한 충격이 가해지게 된다. 낙하물의 충격하중은 기둥부재의 하중변형관계에 따라 소성변형에너지로 흡수가 가능하다. 진행성 붕괴를 방지하기 위해서는 기둥부재의 에너지 흡수 능력이 상시 지지하는 연직하중과 낙하물의 충격하중을 합한 연직하중보다 커야 한다. 이를 위해 구조물이 최종 붕괴 상태에 도달되는 전 과정에 대한 기둥부재의 하중변형관계를 명확히 파악할 필요가 있다. 본 논문에서는 H형강 강재기둥의 비선형유한요소해석을 실시하여 기둥부재의 우발적 손실에 대한 에너지 흡수 능력을 평가하였다.