Journal of the Computational Structural Engineering Institute of Korea (한국전산구조공학회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Evaluating Wind Load and Wind-induced Response of a Twin Building using Proper Orthogonal Decomposition

트윈 빌딩의 적합 직교 분해 기법을 이용한 풍하중 및 풍응답 평가

  • Kim, Bub-Ryur (Center for Structural Health Care Technology in Building, Yonsei Univ.)
  • 김법렬 (연세대학교 건축구조헬스케어연구단)
  • Received : 2018.09.12
  • Accepted : 2018.11.06
  • Published : 2018.12.31
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Abstract

The wind load and structural characteristics of a twin building are more complex than those of conventional high-rise buildings. The pressure load due to wind on a twin building was therefore measured via wind tunnel experiments to analyze such characteristics. The wind pressure pattern was then deduced from measured data using proper orthogonal decomposition. Channeling and vortex shedding were observed in the first and second modes, respectively. The along-wind loads on the two buildings featured a positive correlation and the cross-wind loads featured no correlation. Such a correlation affected the wind-induced displacement. The structural member connecting the two buildings had an insignificant effect on the positive correlation, but it notably reduced the wind-induced displacement with a negative correlation.

트윈 빌딩의 풍하중의 특성과 구조적 특성은 일반 고층건물보다 복잡하다. 이러한 특성을 조사하기 위해서 풍동실험을 통해서 트윈 빌딩의 풍압을 계측하였다. 계측된 데이터와 적합 직교 분해 기법을 이용하여 풍압의 패턴을 파악하였다. 1차 모드에서는 채널링 효과가 2차 모드에서는 와류 효과가 나타났다. 또한, 두 빌딩의 하중의 상관관계를 파악하였는데, 풍 방향 하중은 양의 상관관계를 가지며, 풍 직각 방향의 하중은 명확한 상관관계가 나타나지 않았다. 이러한 상관관계는 횡 방향 변위에도 영향을 미쳤다. 양의 상관관계를 가지면 트윈 빌딩을 연결하는 구조부재의 영향이 적게 작용한 반면에 음의 상관관계를 가지면 연결 구조부재의 영향이 횡 방향의 변위를 줄이는데 큰 영향을 미치게 되었다.

Keywords

References

  1. Bailey, P.A., Kwok, K.C. (1985) Interference Excitation of Twin Tall Buildings, J. Wind Eng. & Ind. Aerodyn., 21(3), pp.323-338. https://doi.org/10.1016/0167-6105(85)90043-1
  2. Bienkiewicz, B., Ham, H.J., Sun, Y. (1993) Proper Orthogonal Decomposition of Roof Pressure, J. Wind Eng. & Ind. Aerodyn., 50, pp.193-202. https://doi.org/10.1016/0167-6105(93)90074-X
  3. Carassale, L., Solari, G., Tubino, F. (2007) Proper Orthogonal Decomposition in Wind Engineering. Part 2: Theoretical Aspects and Some Applications, Wind & Struct., 10(2), pp.177-208. https://doi.org/10.12989/was.2007.10.2.177
  4. Hui, Y., Tamura, Y., Yoshida, A., Kikuchi, H. (2013) Pressure and Flow Field Investigation of Interference Effects on External Pressures between High-rise Buildings, J. Wind Eng. & Ind. Aerodyn., 115, pp.150-161. https://doi.org/10.1016/j.jweia.2013.01.012
  5. Khanduri, AC., Stathopoulos, T., Bedard, C. (1998) Wind-induced Interference Effects on Buildings- A Review of the State-of-the-Art, Eng. Struct., 20(7), pp.617-630. https://doi.org/10.1016/S0141-0296(97)00066-7
  6. Kikuchi, H., Tamura, T., Ueda, H., Hibi, K. (1997) Dynamic Wind Pressure Acting on a Tall Building Model-Proper Orthogonal Decomposition, J. Wind Eng. & Ind. Aerodyn., 69-70, pp.631-646.
  7. Kim, B.R., Tse, K.T. (2018) POD Analysis of Aerodynamic Correlations and Wind-induced Responses of Two Tall Linked Buildings, Eng. Struct., 176, pp.369-384. https://doi.org/10.1016/j.engstruct.2018.09.013
  8. Kim, B.R., Tse, K.T., Yoshida, A., Park, H.S. (Under review) Independent Component Analysis of Wind-induced Pressure Fields on Two Tall Buildings, Build. & Environ.
  9. Kim, W., Tamura, Y., Yoshida, A. (2011) Interference Effects on Local Peak Pressures between Two Buildings, J. Wind Eng. & Ind. Aerodyn., 99(5), pp.584-600. https://doi.org/10.1016/j.jweia.2011.02.007
  10. Lam, K.M., Leung, M.Y.H., Zhao, J.G. (2008) Interference Effects on Wind Loading of a Row of Closely Spaced Tall Buildings, J. Wind Eng. & Ind. Aerodyn., 96(5), pp.562-583. https://doi.org/10.1016/j.jweia.2008.01.010
  11. Lee, B.E., Fowler, G.R. (1975) The Mean Wind Forces Acting on a Pair of Square Prisms, Build. Sci., 10(2), pp.107-110. https://doi.org/10.1016/0007-3628(75)90026-2
  12. Lim, J., Bienkiewicz, B., Richards, E. (2011) Modeling of Structural Coupling for Assessment of Modal Properties of Twin Tall Buildings with a Skybridge, J. Wind Eng. & Ind. Aerodyn., 99(5), pp.615-623. https://doi.org/10.1016/j.jweia.2011.02.010
  13. Solari, G., Carassale, L., Tubino, F. (2007) Proper Orthogonal Decomposition in Wind Engineering. Part 1: A State-of-the-Art & Some Prospects, Wind & Struct., 10, pp.153-176. https://doi.org/10.12989/was.2007.10.2.153
  14. Song, J., Tse, K.T., Tamura, Y., Kareem, A. (2016) Aerodynamics of Closely Spaced Buildings: with Application to Linked Buildings, J. Wind Eng. & Ind. Aerodyn., 149, pp.1-16. https://doi.org/10.1016/j.jweia.2015.11.007
  15. Tamura, Y., Suganuma, S., Kikuchi, H., Hibi, K. (1999) Proper Orthogonal Decomposition of Random Wind Pressure Field, J. Fluids & Struct., 13(7-8), pp.1069-1095. https://doi.org/10.1006/jfls.1999.0242
  16. Tamura, Y., Ueda, H., Kikuchi, H., Hibi, K., Suganuma, S., Bienkiewicz, B. (1997) Proper Orthogonal Decomposition Study of Approach Wind-building Pressure Correlation, J. Wind Eng. & Ind. Aerodyn., 72, pp.421-432. https://doi.org/10.1016/S0167-6105(97)00270-5
  17. Taniike, Y., Inaoka, H. (1988) Aeroelastic Behavior of Tall Buildings in Wakes, J. Wind Eng. & Ind. Aerodyn., 28(1-3), pp.317-327. https://doi.org/10.1016/0167-6105(88)90128-6