Comparison of Natural Frequency of Domestic and Foreign Long-spaned Structure

국내외 장스팬 구조물의 고유진동수 비교

  • 윤성원 (서울산업대학교 건축학부) ;
  • 박용 (서울산업대학교 대학원 건축학과)
  • Published : 2009.03.15

Abstract

As a recent spatial structure have become long-spaned and light, stiffness of out-plane is reduced significantly. Due to this, it is necessary to calculate natural frequency correctly to check if structure is flexible or vortex-induced vibration is occurred. However, formula of frequency in domestic and foreign spatial structure has not been performed deeply. In this study, approximated formula obtained by eigenvalue analysis of seven domestic spatial structure is compared with two suggestions based on Japanese standard and formula by measurement of 28 spatial structure in Japan. Natural frequency of roof has a tendency to be reduced as the span of structure increases. Natural frequency of domestic structure is generally less than that of analysis and measurement of spatial structure in Japan. Therefore, it is confirm that roof of domestic spatial structure is relatively rather flexible than that of Japan.