This study proposed immediate estimation method for structural integrity using acceleration responses after earthquake. Generally, structural damage detection searching for changes in the natural frequencies by acceleration data. However structure’s natural frequency is changed without damage because of various environmental factors. So that reason, we suggested structural safety estimation procedure using various indicators from analyzing acceleration data. This method is not exactly evaluated structural damage, but using this method is simple to make a decision.

In this study, after performing a full-scale dynamic testing of unreinforced masonry buildings, the experimental results and developed seismic performance evaluation program of existing unreinforced masonry buildings were verified by comparing the results of the program.

One of the most important processes to accurately predict structural responses is to evaluate accurate structural dynamic properties using finite element (FE) models. The analyzed structural dynamic properties usually show considerable discrepancies with the measured ones because structural details are commonly simplified in the FE models. To identify such discrepancies, FE models of them have been calibrated using the measured dynamic properties in previous researches. In this study, dynamic properties were measured for a historic cathedral and the FE model of it was calibrated using the measured results as a reference. Finally, a procedure of the FE model construction for masonry cathedral were tentatively proposed.

Woods are used as a main material for the domestic Traditional Buildings and most Traditional Wood Structures should be conserved as Traditional Assets. To be conserved, structural performance should be evaluated. So traits of the materials are to be studied. Therefore characteristics of structural deterioration of Traditional Wood Structures are to be analysed on this study.

The study was conducted for the purpose of determining the size of the floor area of super-tall building by use. So, considering the urban capacity in the region around the super-tall buildings, it has been developed for the prediction methodology of the size. Through the information of the buildings and the cadastral, the correlation and regression analysis were performed by 18 super-tall buildings located in Korea As a result, the residential floor capacity was under the influence of land use of residential and green space, and the business floor capacity was under the influence of land use of green space. Hotel and commercial area, where as the land use and has shown significant results that do not. of a building the size of the surrounding areas for residential and green space and commercial floor area size of the impact of land use for was larger. Hotel and commercial floor capacity, where as the land use and has shown significant results that do not. After this study, it is need to the consideration of the urban capacity around region and supertall buildings to enhance the role of public of supertall buildings. And it will be need to improve the accuracy of prediction with applications to the information of buildings around the region of supertall buildings.

본 논문은 1990년대~2011년 시공 중이었던 건축물의 커튼월의 단열성을 평가하기 위하여 내외 표면 온도를 측정하여 부위별 온도 차이를 분석하였다. 유리면이나 단열층이 있는 표면보다 커튼월의 프레임 (멀리온 및 트랜섬)의 온도는 동절기 외부 평면의 경우 6℃~10℃ 정도 높게 나타났다. 또한, 같은 프레임에서도 앵커유닛이 있는 부위가 다른 프레임보다 2℃~3℃ 더 높게 나타나 보다 큰 열 손실이 일어나고 있는 것으로 나타났다.

This study aims to investigate basic requirements for adopting the Building Information Modeling(BIM) technology to CO2 monitoring system of building maintenance. This study is progressed to emphasis to utilize BIM building information to estimate amass of CO2 on the maintenance stage. The main purpose of this monitoring technology suggest the effective use of information which enable to efficient evaluation technology.

This study proposed simplified design procedure of friction damper for enhancing structural seismic performance. Friction damper has a nonlinear characteristic as performing stick and slip motion. So that reason, design of friction damper is difficult. For easy design of damper, first, equivalent damping ratio of the friction damper is derived. Second, design procedure is proposed by the equivalent damping ratio. Finally, seismic performance of structure installed with the friction damper is verified by five earthquake data.

To evaluate the post-earthquake damage status of URM buildings in Korea, damage state level from the Earthquake Disaster Response System is classified and static test results of 20 URM walls, dynamic test results of 1 URM building are analyzed. From the analysis results, damage state, maximum story drift ratio and residual story drift ratio regarding to the each damage state level are suggested.

Vibration measurements were conducted before and after the experiment of static loading test for soil-wall in wooden structures. As a result, natural period was changed depending on the damage of soil-wall. Accordingly, the damage assessment was carried out using each specimen strength degradation and the dynamic characteristics.

This study is on the correlation between the capacity of the city, and floor area of super-tall buildings. Land use affects on a floor area by use of super-tall buildings, and amenities and public facilities affects too. As a result, the appropriate size of the super-tall buildings on the capacity of the city will help in the development of the district region.

In this study, the case of the seismic evaluation and retrofit for domestic masonry building, which are applied to the house for the aged in Busan city, was introduced. Seismic evaluation can be decided by comparing the seismic capacity index(Is) with the seismic protection index(Iso). According to the seismic evaluation, the seismic retrofit using metal lath and steel plate retrofit method was applied to the case of the lack of the seismic capacity. As a result of the retrofit, the seismic capacity was improved.

본 논문에서는 건축물의 실시간 피드백 진동제어를 위한 기초연구로써, 자체 기술력을 바탕으로 개발된 무선 가속도센서 시스템 및 프로토타입 (Prototype) AMD 시스템을 결합하여 피드백 진동제어 시스템을 구성하고, 모형 건축물을 대상으로 구성된 제어시스템의 기초성능을 평가하고자 하였다. 이를 위하여 본 논문에서는 우선 MEMS 센서 소자 및 블루투스 통신 모듈 기반의 무선 가속도 센서 유닛, 실시간 가속도 응답획득 및 제어법칙에 근거한 제어출력을 구현하도록 구성한 운영프로그램 등을 개발하였다. 또한 AC 서보모터를 이용해 기동되도록 설계한 프로토타입 AMD 및 모터 드라이버 시스템을 구성하였다. 마지막으로 이를 이용해 실시간 피드백 진동제어 시스템을 구성하였고, 2층 모형 건축물을 대상으로 실험실 규모의 진동제어 실험을 수행하여 목적된 구조물의 진동저감 효과를 정량적으로 분석하였다. 실험의 결과, 모형 구조물의 1차 및 2차 공진주파수 그리고 랜덤주파수 등의 실험조건에서 명확한 진동저감의 효과를 확인할 수 있었으며, 종국적으로 본 논문에서 개발한 무선 가속도센서 시스템 및 AMD 시스템이 향후 여타 구조물의 진동제어를 위한 효과적인 수단으로 응용될 수 있는 가능성을 확인하였다.

This paper analyzed the CO2 emission of existing buildings with reconstruction and reusing in the declined residential area of Jeonju old town. The average CO2 emission to square meter of residential buildings in Jeonju is 1.7tCO2/m2.

This paper analyzed the CO2 emission of existing buildings with reconstruction and reusing in declined commercial area of Jeonju old town. The average CO2 emission to square meter of commercial buildings in Junju is 1.4tCO2/m2.

This study presents the seismic evaluation and prediction of post-retrofitted piloti-type reinforced concrete building with buckling-restrained braces (BRBs) under the successive earthquakes. For seismic assessment before and after retrofit of the BRBs, the fragility analysis is considered. The fragility relationships for the damaged building between ground shaking intensity and damage probability were derived under the successive earthquakes.

The aim of this study is to evaluate performance of snow-resistant for the existing building. For this purpose, it was to propose a way to evaluate whether facilities reach goal performance as performance level separated by immediate occupancy level and collapse prevention level. Preliminary evaluation was developed to conduct by using assessment index of five items of vulnerability and two items of impact for selecting the reinforcement priority of target facilities.

This paper analyzed the CO2 emission of existing buildings on the operation phase in the declined residential area of Jeonju old town. The average CO2 emission to square meter of residential buildings in jeonju was calculated.

This study was performed to evaluate the asbestos exposure levels and to calculate excess lifetime cacer risks(ELCRs) in asbestos-containing buildings for maintenance and management. The range of airborne asbestos concentration of 33 buildings was 0.0018 ~ 0.0126 f/cc and one site exceeded indoor air-quality recommended limit 0.01 f/cc. And ELCRs based on US EPA IRIS(Integrated risk information system) model are 1.5E-06 ~ 3.9E-05 levels, and there was no site showed 1.0E-04 (one person per million) level or more, and 11 sites showed 1.0E-05 (one person per 100,000 people) level or more. To prevent the release of asbestos fibers, it needs operation and maintenance of asbestos-containing building materials, and there are some methods such as removal, repairment, enclosure and encapsulation. In conclusion, a risk-based air action level for asbestos in air is an appropriate metric for asbestos-containing building management.

최근 해상을 비롯한 수상공간에 다양한 플로팅 건축물이 계획되거나 설치되고 있다. 그러나 관련 법제도의 미비로 인하여 플로팅 건축물의 설계 및 건설 혹은 관리운영에서 많은 문제점이 발생되고 있으며 이는 플로팅 건축물의 활성화를 저해하는 중요한 요인이 되고 있다. 따라서 본 연구에서는 플로팅 건축물에 대한 국내 법제도 적용 사례 및 해외 관련 법제도 사례 조사를 실시하여 우리나라에서 플로팅 건축물의 법제도 개선을 위한 기초자료와 개선방향을 제시하였다. 연구결과 플로팅 건축물은 선박이 아닌 건물로서 법적 지위를 확보하며 플로팅 건축물 설치 특별구역을 설정하여 건물의 대지를 조성하고 별도 기술기준을 적용하며 건축인허가 및 등기 절차를 활용할 수 있도록 법제도 개선이 필요하다.