국내외 고층건물 설계를 위한 풍방향 풍하중 기준 비교 연구
Comparative Study on Standards of Along-Wind Loads for the Design of High-Rise Buildings
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초록
이 연구에서는 국내 설계기준인 KBC 2016, 미국 기준 ASCE 7-16, 국제 표준 ISO 4354:2012의 고층건물 설계를 위한 풍방향 풍하중을 비교 분석하였다. 각 기준에서 사용하는 기본풍속, 풍방향 풍하중의 가스트영향계수 산정 과정과 이를 구성하는 평균 성분, 비공진 성분, 공진 성분의 차이를 비교 분석하였다. ISO에서는 10분 평균 풍속과 3초 가스트 풍속에 의한 두 가지 하중 산정법을 사용하며, 고층건물에서는 10분 평균 풍속에 의한 산정법이 하중을 6% 더 크게 산정한다. 10분 평균 풍속을 사용하는 KBC 풍하중은 ISO 평균과 거의 일치하였으며. 3초 가스트 풍속을 사용하는 ASCE 7-16은 ISO 피크보다 6% 작게 나타났다. 이 연구에서는 이러한 차이를 줄이기 위한 개선사항들을 제시하였다.
Abstract
In this study, wind loads for high-rise buildings of KBC 2016, ASCE 7-16, and ISO 4354:2012 are compared. The basic wind speed, procedure and component of gust effect factor for each standard are compared. ISO has two procedures based on 10-min averaged wind speed and 3-sec gust wind speed. The wind load on high-rise buildings by 10-min averaged wind speed is 6% larger than that by 3-sec gust wind speed. The magnitudes of along-wind loads of KBC and ISO by 10-min averaged wind speed almost coincide, while ASCE underestimates the wind load by 6% compared with ISO by 3-sec gust wind speed. In this study, the improvements to reduce the gaps between the codes are suggested.
참고문헌 (15)
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