JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A Study on Aerodynamic Damping and Aeroelastic Instability of Helical-shaped Super Tall Building
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Study on Aerodynamic Damping and Aeroelastic Instability of Helical-shaped Super Tall Building
Kim, Wonsul; Yoshida, Akihito; Tamura, Yukio; Yi, Jin-Hak;
  PDF(new window)
 Abstract
In this paper, aeroelastic instability and aerodynamic damping ratio of a helical model which shows better aerodynamic behavior in both along-wind and crosswind responses on a super tall building was investigated by an aeroelastic model test, and the aerodynamic damping ratio was evaluated from the wind-induced responses of the model by using Random Decrement Technique. Aerodynamic damping ratios evaluated in this study were verified through comparison with previous results obtained by quasi-steady theory. As a result, the aeroelastic instability of the helical model in crosswind direction were not occurred for any conditions with increasing the reduced wind velocity while the square model generally encounters aeroinstability due to the vortex shedding. The aerodynamic damping in along-wind direction for the helical and the square model increased monotonically both with reduced wind velocity, i.e., there is no relation with modifications of building shapes. On the other hand, in crosswind direction, the characteristics of aerodynamic damping ratio with reduced wind velocity for helical model were quit different from those of the square model.
 Keywords
aeroelastic instability vibration;aerodynamic damping;crosswind response;along-wind response;random decrement technique;tall building;wind tunnel test;
 Language
Korean
 Cited by
 References
1.
Architectural Institute of Korea (2009) Korean Building Code and Commentary.

2.
Architectural Institute of Japan (2000) Damping in Building.

3.
Cho, J.E., You, K.P., Kim, Y.M. (2006) The Evaluation in Wind Vibration Response of Tapered Tall Buildings, J. Archit. Inst. Korea, 22(5), pp.81-88.

4.
Cho, K.P., Lee, O.J. (2009) Wind-excited Motions of Tall Buildings with Geometrical Shapes, J. Archit. Inst. Korea, 25(6), pp.21-32.

5.
Cho, J.E., You, J.P., Kim, J.S., Kim, Y.M. (2005) The Evaluation in Displacement Response of Tapered Tall Buildings to Wind Load, J. Korean Assoc. Spat. Struct., 5(4), pp.101-108.

6.
Cole, H.A. (1968) On-the-line Analysis of Random Vibration, AIAA paper, No.68-288.

7.
Cole, H.A. (1973) On-line Failure Detection and Damping Measurements of Aerospace Structures by Random Decrement Signature, NASA CR-2205.

8.
Chung, Y.B. (2001) Reducing Effect of Wind-Induced Vibration on Rectangular Model of Super-Highrise Building with Length of Corners Cutting, J. Korean Soc. Steel Const. 13(3), pp.301-311.

9.
ESDU 83009 (2012) Damping of Structures, Part 1: Tall Buildings, ESDU International plc, 27 Corsham Street, London N1 6UA.

10.
Ha, Y.C., Kim, D.W., Jung, P.S. (2002) Wind Tunnel Test Study On The Effective Elevation and Plan Shapes of Super High-Rise Building Resisting Wind-Induced Response-Focused on the Variations of Openings for Building, J. Archit. Inst. Korea, 18(9), pp.93-100.

11.
Kawai, H. (1998) Effect of Corner Modifications on Aeroelastic Instabilities of Tall Builidng, J. Wind Eng. Ind. Aerodyn. 74-76, pp.719-729. crossref(new window)

12.
Kim, D.W., Ha, Y.C. (2004) Aerodynamic Methods for Mitigating the Wind-induced Forces on the Tall Buildings, J. Archit. Inst. Korea, 20(11), pp.3-10.

13.
Kim, W., Kim, Y.C. (2015) Dynamic Responses of Super-tall Buildings Exposed to Various Incident Flows, J. Archit. Inst. Korea, 31(8), pp.19-26.

14.
Kim, W., Yoshida, A., Tamura, Y. (2015) Correlation Analysis of Aerodynamic Forces Acting onTall Buildings with Various Side Ratios, J. Comput. Struct. Eng. Inst. Korea, 28(2), pp.153-160. crossref(new window)

15.
Kim, Y.C. (2012) Evaluation of Wind-induced Responses of Tapered and Setback Tall Buildings, J. Archit. Inst. Korea, 28(12), pp.37-44.

16.
Kim, Y.C. (2014) Aerodynamic Damping Ratio of Super-Tall Buildings, J. Archit. Inst. Korea, 30(8), pp.29-36.

17.
Kwok, K.C.S., Wilhelm, P.A., Wilkie, B.G. (1988) Effect of Edge Configuration on Wind-induced Response of Tall Buildings, Eng. Struct,. 10(2), pp.135-140. crossref(new window)

18.
Marukawa, H., Kato, N., Fujii, K., Tamura, Y. (1996) Experimental Evaluation of Aerodynamic Dampnig of Tall Building, J. Wind Eng. Ind. Aerodyn. 59, pp.177-190. crossref(new window)

19.
Quan, Y., Gu, M., Tamura, Y. (2005) Experimental Evaluation of Aerodynamic Damping of Square Super High-rise Buildings, Wind & Struct., 8(5), pp.309-324. crossref(new window)

20.
Rodrigues, J., Brincker, R. (2005) Application of the Random Decrement Technique in Operational Modal Analysis, Proceedings of the 1st International Operational Modal Analysis Conference, pp.191-200.

21.
Tamura, Y., Suganuma, S.Y. (1996) Evaluation of Amplitude-Dependent Damping and Naturanl Frequency of Buildings during Strong Winds, J. Wind Eng. Ind. Aerodyn. 59, pp.179-191.

22.
Tanaka H., Tamura, Y., Ohtake K., Nakai, M., Kim, Y.C. (2012) Experimental Investigation of Aerodynamic Forces and Wind Pressures Acting on Tall Buildings with Various Unconventional Configurations, J. Wind Eng. Ind. Aerodyn. 107-108, pp.179-191. crossref(new window)

23.
Tanaka H., Tamura, Y., Ohtake K., Nakai, M., Kim, Y.C. (2011) Wind Force Characteristics of Tall Buildings with Unconventional Configurations (part 4) Aerodynamic and Response Characteristics of Buildings with Composite Configurations, Annual Meeting of Architectural Institute of Japan, pp.41-42 (in Japanese).

24.
Vandiver, J.K., Dunwoody, A.B., Campbell, R.B., Cook, M.F. (1982) A mathematical Basis for the Random Decrement Vibration Signature Analysis Technique, J. Mech. Design, 104(2), pp.307-313. crossref(new window)

25.
Watanabe, Y., Isyumov, N., Davenport, A.G. (1997) Empirical Aerodynamic Damping Function for Tall Building, J. Wind Eng. Ind. Aerodyn., 72, pp.313-321. crossref(new window)

26.
You, K.P. (2005) Aerodynamic Across-wind Response of Tapered Tall Building according to Variation of Damping Ratios under Wind Load, J. Archit. Inst. Korea, 21(3), pp.95-101.