우리나라에서는 1995년 부터 시설물의 안전관리에 관한 특별법(이하 시특법)이 시행되어 왔다. 그 이후, 우리나라에서는 크고 작은 사건사고가 있었고, 구조적 안전성 확보를 위해 수차례의 법 개정이 있었다. 한국시설안전공단에서는 건축물 정밀안전점검 및 정밀안전진단 보고서를 시특법에 근거해 평가하며 그 결과를 사례집을 통해 주기적으로 발간하고 있다. 본 연구의 목적은 안전성 검사 및 진단을 위한 기술 및 제도 개선 방안 도출에 있다. 이를 위해 2011 년부터 2015 년까지 시설안전공단에서 발행한 정밀안전점검 및 정밀안전진단 보고서의 평가 사례 데이터를 비교 분석하였다. 비교 분석 결과를 토대로 정밀안전점검 및 정밀안전진단 수행 중 발생하는 문제의 원인을 파악하기 위해 전문가를 대상으로 한 설문 조사를 실시하였다.

The first instrumental earthquake observation in Korea was started in 1905 by installing mechanical seismometers at the Incheon Observatory. Since then, the largest earthquake with a magnitude of 5.8 has occurred in Gyeongju in 2016. The seismic data on the Gyeongju earthquake are provided in the form of Mini Seed from the Korea National Earthquake Comprehensive Information System (http://necis.kma.go.kr/). In this study, it is aimed to understand the response characteristics of Gyeongju seismic waves. The response spectra of El Centro, Taft and the 2016 Kumamoto earthquake are compared and analyzed. In the response spectrum analysis, the acceleration response and the energy response were mainly considered.

In seismic design, the approximate natural period equation is defined differently for each country. Korea is currently using what is prescribed by KBC 2016. The natural period is a physical quantity related only to the stiffness and mass of the structure. If the mass is constant, the natural period is inversely proportional to the square root of the stiffness. In this study, the main objective is to evaluate the lateral force capacity inherent in the current approximate natural period equation. To grasp seismic performance, it is necessary to know the lateral resisting force of the structure. In order to know the lateral resisting capacity, the analytic model buildings were designed to have the exactly same as approximate natural period specified in the current standard, and nonlinear push-over analysis was performed. From the analysis results, the base shear coefficient and roof drift angle etc were discussed and evaluated.

Since 1995 the special act for safety management of public facilities have been enacted in Korea. Since then undergoing safety accidents great and small, legal system was revised several times for safety promotion. As part of its efforts Korea Infrastructure Safety & Technology Corporation have periodically evaluated the building safety inspection or diagnosis reports based on Special Act for Safety Control of Public Structures and published annual casebook. This study investigates and examines the cases of bad or poor reports until now. This paper aims at reasoning out the technical and institutional improvement plan for error-prone problems when safety inspection of buildings.

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.

The demand for the structural system of reduction of story height increases because buildings are getting higher. The existing structural systems are not efficiency. Thus, it is hard to reduce the story height and existing methods cannot secure economics as expected. This study aims at developing the partially concrete-filled new type composite beam, which can efficiently resist against the end negative moment and central positive moment, also reduce deflection of beams. Through case studies on loading of concentrated load and uniformly distributed load to fixed beam, we could find the most efficient ratio of moment of inertia and the ratio (end beam length to span). The gap space between middle and end beam can be used as facilities installation, consequently the suggested Omega beam system is expected to get the effect of reduction in story height as well as reduction of quantity.

The demand for the structural system of reduction in story height increases because buildings are getting higher. The existing method of construction is not efficiency. Thus, it is hard to reduce the story height and this method cannot secure economics as expected. This study aims at developing the partially concrete-filled new type composite beam, which can efficiently resist against the negative moment and positive moment, for the reduction of deflection. Through case studies on loading of concentrated load and uniformly distributed load to fixed beam, we could find the most efficient ratio of moment of inertia. Consequently the gap space between middle and end beam can be used as facilities installation, moreover the suggested Omega beam system is expected to get the effect of reduction in story height as well as reduction of quantity.

This study aims at developing a new shape damper and suggestion for seismic silo structure, which contribute to increase significantly seismic performance and constructional efficiency. The suggested N.B.B.D system is more likely to adoptable because it remarkably contribute to save inter-story drift also to have many advantages compared with conventional X or K type braced frame.

본 연구에서는 신형상 층고절감형 합성보에 대한 최적단면을 도출하기 위해 단면성능 계산 프로그램을 개발하여 단면성능에 대해 비교 분석을 하였다. 신형상 합성보는 상부 플랜지 하부에 바닥시스템이 위치하여 전통적인 공법 에 비해 층고절감의 효과와 최적단면으로 설계시 공기의 단축과 비용의 절감은 물론 물량의 감소를 기대 할 수 있 다. 그러나 단면은 기존 H형강 보와 달리 상하 비대칭으로 중립축의 위치가 중앙에 위치하지 않기 때문에 상하연 단에 대한 단면계수가 같지 않게 된다. 이에 따른 상하플랜지 판요소의 두께비에 따른 매개 변수적 분석이 요구된 다. 따라서, 본 연구에서는 단면의 상부 플랜지 두께에 대한 하부 플랜지 두께의 비에 따른 중립축위치, 단면계수의 변화추이를 분석하여 최적단면을 도출하는데 주목적을 두었다.

The conventional RC 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 or SRC column have been rare both at home and abroad. Main topics in this study is a new structural detail for connection between H-Steel or SRC column and flat plate slab. The test for lateral performance of connection between H-Steel or SRC column and flat plate slab was carried out. From the test results structural characteristics - yield moment, yield rotation, maximum moment, deformation capabilities and so on - are obtained and evaluated.

This study aims at grasping the structural performances of primary anchor assemblage through a nonlinear finite element analysis. Primary anchor unit may be used as one of the connection devices between ALC panel curtain-wall and RC slab or main frame of a building. From the analytical results structural characteristics such as yield strength, initial stiffness and maximum strength are obtained and compared with test results.

본 연구는 Primary Anchor의 비선형 유한요소해석을 통해 구조적 성능을 파악하는데 목적이 있다. Primary Anchor Unit은 ALC 패널 커튼월과 RC 슬래브 또는 주골조 사이에 연결장치로 사용할 수 있다. 항복강도, 초기강성과 최대 하중과 같은 구조적 특성을 구하고 자세히 비교분석하였다.