• Proceedings of the Korean Society for Emotion and Sensibility Conference
• /
• 한국감성과학회 2007년도 춘계학술대회 및 국제감성 심포지엄
• /
• pp.128-131
• /
• 2007

난간의 각 구성요소는 설치장소 및 용도에 따라 여러 설치 관련규정에 의해서 규제되어 있는데 이 규정은 난간의 높이에 대한 규정으로, 이러한 규제된 난간의 요소 중 하나인 난간 높이와 실지 소비자들이 느끼는 심리적 안정성이 일치하는가에 대한 여부는 여전히 의문으로 남아있다. 건물의 옥상에 설치된 난간에 대해서 난간의 높이가 아닌 다른 어떠한 구성요소가 실지로 소비자들에게 조형적 안정감을 주는지에 대한 부분은 연구가 상당히 미흡하다고 생각한다. 본 연구는 부산에 위치한 초등학교를 대상으로 4층 이상의 고층구조물에 설치되어 있는 난간을 범주로 하여 설문조사를 실시하고, 난간이 설치되어 있는 현장에서는 EKG(심전도 테스트)를 시행, 사용자들이 기존에 인지하고 있는 난간에 대한 느낌과 현장에서 실제로 느끼는 조형적 측면의 심리적 안정감 및 다른 요소를 분석하여 사용자가 안정감을 가질 수 있는 난간디자인에 필요한 구성요소를 발견하는 것이 본 연구의 목적이다. 또한 기존에 사용하고 있는 난간 설치의 규정의 정당성 여부를 고찰 및 재조명하여 사용자의 심리적 안정성을 충족시키는 가에 대한 자료 제시를 목적으로 한다.

• Journal of Korean Association for Spatial Structures
• /
• 제6권3호
• /
• pp.103-110
• /
• 2006

This study presents a technique to control quantitatively lateral drift of RC tall frameworks subject to lateral loads. To this end, lateral drift constraints are established by introducing approximation concept that preserves the generality of the mathematical programming and can efficiently solve large scale problems. Also the relationships of sectional properties are established to reduce the number of design variables and resizing technique of member is developed under the 'constant-shape' assumption. Specifically, the methodology of dynamic displacement sensitivity analysis is developed to formulate the approximated lateral displacement constraints. Three types of 10 and 50 story RC framework models are considered to illustrate the features of dynamic stiffness-based optimal design technique proposed in this study.

• Journal of the Korean Geotechnical Society
• /
• 제19권6호
• /
• pp.85-97
• /
• 2003

In this paper, earthquake response analyses were performed using equivalent linear method at the soil sites classified as soil types III and IV in "Standard Design Loads for Buildings" Soil Factors were back-calculated by using spectral accelerations obtained from the analyses and those values are compared with soil factors described in other domestic seismic guidelines. For buildings which have the natural period higher than 0.9 sec, it was possible to use soil factors of soil types II and III instead of those of soil types III and IV, respectively. Therefore, it can be concluded that seismic base shear force can be overestimated in the current seismic guidelines and the improvement is required. required.

• Journal of Korean Association for Spatial Structures
• /
• 제8권1호
• /
• pp.69-76
• /
• 2008

The wind monitoring systems are installed in high-rise buildings to record wind response data. The measured buildings are located in Busan and Sokcho. The measured wind data are analysed in this paper to obtain the mean wind speed and direction, turbulence intensity and gust factor. By using the correlation between gust factor and turbulence intensity, the expression for gust factor based on wind data measured from the building is suggested. The field measurement data obtained here are useful for the validation of wind tunnel tests and the future design of tall building.

• Proceedings of the Computational Structural Engineering Institute Conference
• /
• 한국전산구조공학회 2011년도 정기 학술대회
• /
• pp.656-659
• /
• 2011

최근 우리나라뿐만 아니라 전 세계적으로 고층건물의 규모가 점점 커짐에 따라 고층 건물은 초기단계에서부터 막대한 자원과 비용이 발생하고 도중에 설계변경이 어렵거나 불가능한 경우가 많아졌다. 때문에 초기구조설계과정과 실시설계, 시공과정에서의 차이를 최대한 줄이는 것이 사업의 경제성을 좌우할 만큼 중요한 비중을 차지한다. 이러한 정보를 제대로 관리할 초고층 BIM 정보환경이 구축된다면 발주자 설계자 시공자가 얻게 될 이익은 결코 적지 않을 것이다. S-BIM 프로세스 상에서 철골조를 형성하기 위해서는 세 단계의 프로세스를 거치는데 구조 해석 및 설계 단계, 구조 해석 및 설계 결과 데이터베이스 구축, 철골구조설계 및 형상화 모듈에 의한 부재 생성이다. 본 연구에서는 구조해석 및 설계(Analysis and Design, A&D) 데이터베이스를 C#코딩을 통해 형상, 길이 및 위치 정보를 결정하는 데 필요한 정보를 모듈 상에 불러오고, 이를 이용한 부재의 치수, 길이, 좌표 값을 산정하였다. 모듈 결과 생성된 정보를 BIM 플랫폼 상에 모델링함으로써 사용자 입력 값을 최소로 하여 기존 BIM 플랫폼의 모델링 방법 대비, 생산성이 향상된 철골구조설계의 자동화를 구현해 보고자 하였다.

• Journal of the Computational Structural Engineering Institute of Korea
• /
• 제30권2호
• /
• pp.159-167
• /
• 2017

The purpose of this study is to accurately estimate the wind-induced responses of a tall building structure for using the estimated responses in the process of calculating the optimal force of an active control device. Kalman filter was used for the estimation process and a 3-storied model structure on a shaking table was tested for the verification of the estimation accuracy. The system matrices of the model were constructed based on the mode parameters obtained by the system identification. The estimated displacement matched up well with the measured one. Finally, the wind-induced responses of a real 39-storied building structure excited by the typhoon MUIFA were estimated.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 한국건축시공학회 2020년도 봄 학술논문 발표대회
• /
• pp.159-160
• /
• 2020

Flat plate structures are designed in the form of long span due to the development of construction materials and the improvement of construction technology. However, a high-rise structure of a flat plate of 50 less floors is constructed without detailed review of the inequality shortening, long-term deflection of the slab, and cracks. Therefore, it is possible to examine the case of defects in the structure due to deformation and damage of non-structures such as crack and leak, deflection of the door frame, and deformation of equipment ducts. In this study, it is a high-rise structure, and the inequality shortening and long-term deflection of the slab of the flat plate structure were evaluated through finite element analysis, and it was confirmed that prior precision analysis and correction during construction is necessary.

• Journal of the Earthquake Engineering Society of Korea
• /
• 제10권2호
• /
• pp.21-29
• /
• 2006

It is impractical to install sensors on every floor of a tall building to measure the full state vector because of the large number of degrees of freedom. This makes it necessary to introduce reduced order control. A kind of system reduction scheme (dynamic condensation method) is proposed in this paper. This method is iterative and Guyan condensation is looked upon as an initial approximation of the iteration. Since the reduced order system is updated repeatedly until a desired one is obtained, the accuracy of the reduced order system resulting from the proposed method is much higher than that obtained from the Guyan condensation method. An eigenvalue shilling technique is applied to accelerate the convergence of Iteration. Two schemes to establish the reduced order system by using the proposed method are also presented and discussed in this paper. The results for a tail building with active tuned mass damper show that the proposed method is efficient for the reduced order modelling and the accuracy is very close to exact only after two iterations.

• Journal of the Earthquake Engineering Society of Korea
• /
• 제3권1호
• /
• pp.1-8
• /
• 1999

Dynamic elastoplastic LPM (lumped parameter mass) analyses are carried out in order to investigate the seismic resistant performance of a typical high-rise shear wall apartment subjected to several earthquakes. Three-dimensional nonlinear pushover analysis is adopted to estimate initial elastic stiffness, yielding strength and post-yielding stiffness of each story for the time history analysis of LPM shear model. For the hysteresis of each story, Clough and bilinear models are used with the input of four recorded earthquake ground motions of EI Centro 1940 NS, Taft 1952 EW, Hachinohe 1968 NS and Kobe 1995 NS, of which the amplitudes are scaled down to have the same maximum ground velocity of 12 kine. The result shows that yieldings take place in most storys of the building, i.e. the earthquake resistant capacity of this high-rise shear wall apartment is not sufficient at the event of earthquake M=5~6.

• Journal of the Computational Structural Engineering Institute of Korea
• /
• 제17권2호
• /
• pp.215-222
• /
• 2004

Drift design methods using resizing techniques have been presented as a practical drift control methods of high-rise buildings. Most drift design methods using the resizing techniques have adopted the cross-sectional area as the design variables for all structural members in a structure. However, the cross-sectional area is not always governing sectional property for the structural members, but the governing sectional property of each member is dependent on the characteristics of member forces. In this paper, a drift design method using the sectional property related to the governing displacement participation factor as the design variable of each member is presented and applied to the drift design of 20-story steel frame-shear wall system. It can be noted from example test that drift design method considering member characteristics shows similar or somewhat better results in the view point of structural weights and the accuracy of displacement estimation.