Effect of corner-cut and tapering on across-wind aerodynamic damping of square high-rise buildings

被引：0

作者：

机构：

[1] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University

[2] Institute of Steel Structure, Capital Engineering and Research Incorporation Limited

来源：

Quan, Y. (quanyong@tongji.edu.cn) | 2013年 / Tsinghua University卷 / 30期

关键词：

Across-wind aerodynamic damping; Aerodynamically modified cross-section; Aeroelastic model wind tunnel test; High-rise building; Random decrement technique; Wind engineering;

D O I：

10.6052/j.issn.1000-4750.2012.07.0547

中图分类号：

学科分类号：

摘要：

In order to study the effects of chamfered, slotted, and tapered cross-sections on across-wind aerodynamic damping ratio of super-high-rise building, 10 aeroelastic model tests were conducted in the TJ-1 wind tunnel at Tongji University. The random decrement technique was used to evaluate across-wind aerodynamic damping ratios. The accuracy of the evaluated results was verified through comparison with previous research achievements. Results indicated that modifications of cross-sections are not always effective in suppressing the aerodynamic effects of tall buildings. Chamfer ratios from 5% to 20%, slot ratios from 5% to 10%, and taper ratio of 1% significantly decrease the magnitudes of absolute aerodynamic damping ratios. Slot ratio of 20%, and taper ratios from 3% to 5% increase wind-induced responses through changing the aerodynamic damping ratios. Based on the findings, empirical aerodynamic damping function parameters are fitted for aerodynamic damping ratios of high-rise buildings with aerodynamically modified square cross-sections at low reduced wind velocities.

引用

页码：87 / 93+100

共 17 条

[1]

Liang S., Zou L., Guo B., Investigation on wind-induced 3-d responses of Wuhan international stock building based on wind tunnel tests of rigid models, Engineering Mechanics, 26, 3, pp. 118-127, (2009)

[2]

Huang D., Zhu L., Ding Q., Chen W., Equivalent static wind loads on high-rise buildings base on inversion method, Engineering Mechanics, 29, 1, pp. 99-105, (2012)

[3]

Huang M., Wind-induced vibration performance-based optimal structural design of tall buildings, Engineering Mechanics, 30, 2, pp. 240-246, (2013)

[4]

Davenport A.G., The response of super tall buildings to wind, Second Century of the Skyscraper, Council on Tall buildings and Urban Habitat, pp. 705-725, (1988)

[5]

Nakayama M., Tanaka H., Tanaka K., Yamamoto K., Sasaki Y., Tamagi Y., Hirasama M., An aeroelastic study on a super-tall building with tapered section, Proceeding of the 11th National Symposium on Wind Engineering, pp. 249-254, (1992)

[6]

Fediw A.A., Nakayama M., Cooper K.R., Sasaki Y., Wind tunnel study of an oscillating tall building, Journal of Wind Engineering Industrial Aerodynamics, 57, 2, pp. 249-260, (1995)

[7]

Cooper K.R., Nakayama M., Sasaki Y., Fediw A.A., Resende-Ide S., Zan S.J., Unsteady aerodynamic force measurements on a super-tall building with a tapered cross section, Journal of Wind Engineering and Industrial Aerodynamics, 72, 1-3, pp. 199-212, (1997)

[8]

Tanagi Y., Nakayama M., Yamamoto K., Experimental study on wind-response of tapered tall buildings, Proceedings of AIJ, Part I: Force Measurement, pp. 33-34, (1999)

[9]

Kim Y.M., You K.P., Dynamic responses of a tapered tall building to wind loads, Journal of Wind Engineering Industrial Aerodynamics, 90, 14, pp. 1771-1782, (2002)

[10]

Kim Y.M., You K.P., Ko N.H., Across-wind responses of an aeroelastic tapered tall buildings, Journal of Wind Engineering Industrial Aerodynamics, 96, 8-9, pp. 1307-1319, (2008)

← 1 2 →