• 한국공간구조학회논문집
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• 제11권4호
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• pp.109-119
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• 2011

현재까지 스마트 면진시스템은 일본이냐 미국 같은 강진지역에서 개발되고 적용되어 왔다. 이렇게 강진지역에 있는 건축물을 지진하중으로부터 보호하기 위하여 개발된 스마트 면진시스템은 우리니라와 같은 중약진 지역에 있는 건축물에 그대로 적용되기에는 많은 한계점이 있다. 따라서 본 연구에서는 강진지역에 건설되는 건축물을 위한 스마트 면진시스템을 중약진 지역에 건설되는 건축물에 작용하였을 때 발생하는 문제점음 검토해보았다. 이를 위하여 예제구조물로 대공간 아치구조물을 선택하였고 스마트 면전시스템은 MR 감쇠기와 저감쇠 탄성베어링을 사용하여 구성하였다. 강진지역과 중약진 지역에서 발생하는 지진하중으로는 기존에 발생한 역사지진을 바탕으로 인공지진을 생성하였다. 수치해석결과 강진지역에 건설되는 대공간구조물을 위하여 개발된 스마트 면진시스템을 그대로 중약진 지역에 적용하면 면진효과가 상당히 줄어들므로 스마트 제어장지의 용량이 중약진 지역에 맞추어 주의 깊게 설계되어야 함을 알 수 있었다.

• 한국지진공학회논문집
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• 제2권3호
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• pp.99-109
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• 1998

Korea is located in either low of moderate seismicity continental region. It is realized that the design codes and underlying design concept of high seismicity region may not be a, pp.opriate to low and moderate seismicity regions. The aim of this paper is to search seismic design concept that is deemed to be a, pp.opriate to low and moderate seismicity regions. To this end, the seismicity of Korea will be introduce first and important aspects of seismic design in moderate seismicity region will be discussed. The two-level code system that is going to be adopted in the future seismic regulations of Korea will be introduced.

• 한국지진공학회논문집
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• 제11권4호
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• pp.53-63
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• 2007

Seismic design codes are developed mainly based on the observation of the behavior of structures in the high seismicity regions where structures may experience significant amount of inelastic deformations and major earthquakes may result in structural damages in a vast area. Therefore, seismic loads are reduced in current design codes for building structures using response modification factors which depend on the ductility capacity and overstrength of a structural system. However, structures in low seismicity regions, subjected to a minor earthquake, will behave almost elastically because of the larger overstrength of structures in low seismicity regions such as Korea. Structures in low seismicity regions may have longer periods since they are designed to smaller seismic loads and main target of design will be minor or moderate earthquakes occurring nearby. Ground accelerations recorded at stations near the epicenter may have somewhat different response spectra from those of distant station records. Therefore, it is necessary to verify if the seismic design methods based on high seismicity would he applicable to low seismicity regions. In this study, the adequacy of design spectra, period estimation and response modification factors are discussed for the seismic design in low seismicity regions. The response modification factors are verified based on the ductility and overstrength of building structures estimated from the farce-displacement relationship. For the same response modification factor, the ductility demand in low seismicity regions may be smaller than that of high seismicity regions because the overstrength of structures may be larger in low seismicity regions. The ductility demands in example structures designed to UBC97 for high, moderate and low seismicity regions were compared. Demands of plastic rotation in connections were much lower in low seismicity regions compared to those of high seismicity regions when the structures are designed with the same response modification factor. Therefore, in low seismicity regions, it would be not required to use connection details with large ductility capacity even for structures designed with a large response modification factor.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 1998년도 추계 학술발표회 논문집 Proceedings of EESK Conference-Spring 1998
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• pp.75-84
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• 1998

Korea is located in either low or moderate seismicity continental region. It is realized that design codes and underlying design concepts of high seismicity region may not be appropriate to low or moderate seismicity region. In this paper, test results on the seismic response of structures without seismic detailing are reexamined and compared with numerical analysis results. The seismic design concept based on limited ductility is proposed as an alternative seismic design approach in moderate seismicity regions.

• 한국공간구조학회논문집
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• 제12권4호
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• pp.71-80
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• 2012

Because a smart isolation system cannot be used as a base isolation system for tall buildings, top-story or mid-story isolation systems are required. In this study, adaptability of a smart top-story isolation system for reduction of seismic responses of tall buildings in regions of low-to-moderate seismicity has been investigated. To this end, 20-story example building structure was selected and an MR damper and low damping elastomeric bearings were used to compose a smart base isolation system. Artificial earthquakes generated based on design spectrum of low-to-moderate seismicity regions are used for structural analyses. Based on numerical simulation results, it has been shown that a smart top-story isolation system can effectively reduce both structural responses and isolation story drifts of the building structure in low-to-moderate seismicity regions in comparison with a passive top-story isolation system.

• 한국강구조학회 논문집
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• 제24권3호
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• pp.325-336
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• 2012

강진지역에 있는 건축물을 지진하중으로부터 보호하기 위하여 개발된 스마트 면진시스템은 우리나라와 같은 중약진지역에 있는 건축물에 그대로 적용되기에는 많은 한계점이 있다. 따라서 본 연구에서는 강진지역에 있는 건축물을 위한 스마트 면진시스템을 중약진지역에 건설되는 건축물에 적용하였을 때 발생하는 문제점을 검토해보았다. 또한 이를 토대로 중약진지역에 건설되는 건축물을 위한 스마트 면진시스템의 개발시 고려해야할 사항에 대해 알아보았다. 수치해석을 위한 예제구조물로 5층 건물을 선택하였고 스마트 면진시스템은 MR 감쇠기와 저감쇠 탄성베어링을 사용하여 구성하였다. 강진지역과 중약진지역에서 발생하는 지진하중으로는 기존에 발생한 역사지진을 바탕으로 인공지진을 생성하였다. 수치해석결과 스마트 면진시스템이 우수한 성능을 발휘하는 MR 감쇠기의 용량이 강진지역과 중약진지역에 대하여 크게 다른 것을 알 수 있었다. 또한, 강진지역에 건설되는 구조물을 위하여 개발된 스마트 면진시스템을 그대로 중약진지역에 적용하면 면진효과가 상당히 줄어들므로 스마트 제어장치의 특성을 중약진지역에 맞추어 주의 깊게 설계되어야 함을 알 수 있었다.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2002년도 추계 학술발표회 논문집
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• pp.292-299
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• 2002

It has been realized that the design codes and underlying design concept of high seismicity region may not be appropriate to low and moderate seismicity regions. The aim of this paper is to search seismic design strategies that are appropriate to moderate seismicity regions. The characteristics of seismic hazard in moderate seismicity regions are reviewed. The seismic responses of multi-span continuous bridges subjected to the ground shaking of moderate intensity are examined. The present code on seismic design of bridges is briefly reviewed. Based on these observations, design principles and strategies appropriate to the moderate seismicity regions are proposed for the multi-span continuous bridge

• 도로교통
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• 통권76호
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• pp.2-7
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• 1999

Seismic design in low to moderate seismic regions has to be based on the characteristics of seismic risk, ground motion and structural response in that region. The characteristics of seismic hazard in low to moderate seismic regions are reviewed briefly. The recent findings on the dynamic behavior subjected to the moderate intensity level of ground motion are summarized. The seismic design considerations in Eastern America, China, Australia, Thailand and Hong Kong will be introduced. The effort to adopt the limited ductility design in low to moderate seismicity regions will be reported. Finally research works that are required for the implementation of the limited design concept will be proposed.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 1999년도 춘계 학술발표회 논문집 Proceedings of EESK Conference-Spring
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• pp.217-222
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• 1999

Seismic design in low to moderate seismic regions has to be based on the characteristics of seismic risk ground motion and structural response in that region. The characteristics of seismic hazard in low to moderate seismic regions are reviewed briefly. The recent findings on the dynamic behavior subjected to the moderate intensity level of ground motion are summarized. The seismic design considerations in Easterm America China Australia Thailand and Hong Kong will be introduced, . The effort to adopt the limited ductility design in low to moderate seismicity regions will be reported. Finally research works that are required for the implementation of the limited design concept will be proposed.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 1999년도 추계 학술발표회 논문집 Proceedings of EESK Conference-Fall
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• pp.359-366
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• 1999

This paper is a study on the seismic design and test of viscoelastic dampers in regions of moderate seismicity. First moderate seismic waves are generated with measured strong seismic data based on the theory of effective peak acceleration. Then their response spectrums are compared each other to estimate the required damping to attenuate the vibration. As relatively smaller damping is required in the regions of moderate seismicity than in the regions of strong seismicity proper viscoelastic dampers can be designed according to the estimated damping. Finally a test building model is designed and the viscoelastic dampers are installed for the experimental study under moderate and strong earthquakes, It is found that viscoelastic dampers with low damping capacity developed in this study are enough to reduce the building response in regions of moderate seismicity.