수직비정형과 비틀림비정형을 동시에 가지는 저층 RC 건물의 내진성능에 관한 연구 (Study on the Seismic Performance for Low-rised RC Building with Vertical and Torsional Irregularities)

서지정보

· 발행기관 : 대한건축학회
· 수록지 정보 : 대한건축학회논문집 구조계 / 35권 / 12호 / 137 ~ 148페이지
· 저자명 : 최인혁, 백은림, 이상호

초록

국내 저층 필로티형 건물은 수직비정형과 비틀림비정형을 동시에 가지는 경우가 많다. 이에 건축구조기준은 내진 설계 범주 C 또는 D에 해당하고 6층 또는 20m 미만의 건물에 대해 특별지진하중과 비틀림증폭계수를 적용하도록 하고 있다. 그러나 각 설계변수가 수직과 비틀림비정형을 동시에 가지는 건물의 내진성능에 얼마나 큰 영향을 미치는지는 연구된 바가 적다. 본 연구에서는 각 설계변수를 적용하여 재설계한 모델들의 동적해석결과를 분석하여 특별지진하중과 비틀림증폭계수가 저층 RC 필로티형 건물의 내진성능에 미치는 영향을 파악해보았다.

영어초록

Korean piloti-type buildings are comprised of pilotis in the first story and shear walls in the upper stories. This vertical irregularity causesexcessive lateral plastic deformation on the first story while the upper stories stay elastic. Meanwhile, asymmetric position of structuralcomponents such as core walls and columns of RC piloti-type buildings tends to produce torsional irregularities of the structures. KoreanBuilding Code(KBC2016) requires the special seismic load and torsional amplification factor to apply to the piloti-type buildings lower thansix-story or 20m if it has vertical and torsional irregularities when the building corresponds to seismic design category C or D. Many Koreanlow-rised RC buildings fall into the class. Therefore, the special earthquake load and torsional amplification factor are often applied to abuilding simultaneously. However, it has not been studied enough how much influence each parameter has on buildings with vertical andtorsional irregularities at the same time. The purpose of this study is to evaluate the effect of factor special seismic load and torsionalamplification on seismic performance of irregular buildings. In this study, a damaged 4th story piloti-type building by the Pohang earthquakewas selected and the earthquake response analysis was carried out with various seismic design methods by the KBC 2016. The effect of thedesign parameters on seismic performance was analyzed by the dynamic analysis of models with special seismic load and torsionalamplification factor based on the selected building. It was concluded that the application of the torsional amplification factor to the referencemodel to which special seismic design was applied, does not significantly affect the seismic performance.

참고자료

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