Browse > Article
http://dx.doi.org/10.5659/JAIK.2022.38.10.265

The Characteristic on Vertical Profile of Fluctuating Wind Force Coefficient  

Ryu, Hye-Jin (Dept. of Architectural Engineering, Kumoh National Institution of Technology)
Shin, Dong-Hyeon (Dept. of Architectural Engineering, Kumoh National Institution of Technology)
Ha, Young-Cheol (Dept. of Architectural Engineering, Kumoh National Institution of Technology)
Publication Information
Journal of the Architectural Institute of Korea / v.38, no.10, 2022 , pp. 265-272 More about this Journal
Abstract
The HFFB(High Frequency Force Balance) technique can easily obtain the shear force, the overturning moment, and the torsion moment of building. However, there is a blind point that the vertical profile cannot be grasped. The actual wind load does not act as the same force depending on the height direction of the building. Therefore, the shear force at the base of the building calculated through the HFFB technique should be appropriately distributed vertically. The background wind loads are generated by the wind, and it is reasonable to follow the vertical profile of the fluctuating wind force coefficient. In this study, the vertical profile of the fluctuating wind force coefficient was investigated through the wind pressure test. The PIM(Pressure Integration Method) was used to convert the wind pressure data obtained through the wind pressure test into the wind force data. The study model are the rectangular building with aspect ratios of 0.2, 0.25, 0.33, 0.5, 0.66, 1, 1.5, 2, 3, 4, 5. The vertical profile of the fluctuating wind force coefficient for along-wind direction, across-wind direction, torsional direction according to the change of the aspect ratio was analyzed. As a result, it was confirmed that the vertical profile of the fluctuating wind force coefficient tends to become relatively constant as the wind direction goes from 0° to 45°(When wind direction and structural axis do not coincide).
Keywords
Background Wind Load; Pressure Integration Method; Wind Pressure Test; Fluctuating Wind Force Coefficient; Vertical Profile;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Ryu, H.J., Shin, D.H., & Ha, Y.C. (2019). The Wind Load Evaluation on Building Considering Vertical Profile of Fluctuating Wind Force, Journal of the Architectural Institute of Korea Structure & Construction, 35(7), 157-164.
2 Architectural Institute of Korea (2016). Korean building code
3 Bae, J.S., Hwang, S.K., & Ha, Y.C. (2009). Characteristics on the Dynamic Responses of the Structural Axis Directions to Tall Buildings under Wind Actions with Various Side Ratios, Journal of the Wind Engineering Institute of Korea, 13(1), 3-10
4 Kim, D.Y., & Kim, J.Y. (2005). A Development of Advanced Wind Load Design System for Tall Buildings and Large Span Structures, J ournal of the Architectural Institute of Korea Structure & Construction, 49(4), 113-119.
5 Kim, B.J., Lee, B.H., & Ha, Y.C. (2010). A Study on the Verification of Validity for Pressure Integration Method 1, Journal of the Wind Engineering Institute of Korea, 14(3), 169-177
6 Kim, B., & Ha, Y. (2012). A Study on the Validity for Pressure Integration Method to Analyze Force Based Upon Wind Direction, Journal of the Wind Engineering Institute of Korea, 16(4), 179-185
7 Lee, S.J. (2001). Evaluation of the Wind-Induced Internal Pressures in Building with Variable Porosities and Openings, Thesis, Kumoh National Institute of Technology, 179.
8 Tanaka.H, Tamura.Y, Ohtake.K, Nakai.M, & Chul Kim.Y. (2012). Experimental investigation of aerodynamic forces and wind pressures acting on tall buildings with various unconventional configurations, Journal of Wind Engineering and Industrial Aerodynamics, 107-107, 179-191
9 Ryu, H.J. (2017). Proposal of Evaluation Method of Wind Loads for High-Rise Buildings Considering Response Acceleraion, Thesis, Kumoh National Institute of Technology, 50.
10 Kim, B.J., & Ha, Y.C. (2011). A Study on the Verification of Validity for Pressure Integration Method 2, Journal of the Wind Engineering Institute of Korea, 15(4), 139-147
11 Hiroshi, T., & Yutaka, A. (1994). An experimental research for vertical distribution of fluctuating wind force on high rise building, Architectural Institute of Japan, 1994, 231-232