Please wait a minute...
J4  2012, Vol. 46 Issue (5): 811-817    DOI: 10.3785/j.issn.1008-973X.2012.05.006
土木工程     
开孔结构内压传递方程的适用性分析
徐海巍,余世策,楼文娟
浙江大学 建筑工程学院,浙江 杭州 310058
Applicability analysis on transfer equation of internal
pressure for opening structures
XU Hai-wei, YU Shi-ce, LOU Wen-juan
College of Civil Engineering and Architecture, Zhejiang University,Hangzhou 310058,China
 全文: PDF  HTML
摘要:

为了研究单一开孔结构内压的传播机理,采用理论推导结合模型实验提出内压传递方程的新形式.考虑到国外学者提出的方程普遍存在低估孔口阻尼值这一不足,从N-S方程出发结合层流边界层理论,推导单一开口结构内外压传递的方程.对6种不同开孔条件下的模型进行扬声器激振试验,以获得内压时程曲线.通过拟合实测内压曲线,来考察不同方程的适用性.研究结果表明,所推导的新方程与国外学者提出的方程相比能够准确地预测开孔模型内压幅值和阻尼.

Abstract:

In order to understand internal pressure propagation mechanism of single opening structures, a new form of internal and external pressure transfer equation was proposed using theoretical analysis and model experiment investigation. In consideration of shortage that equations suggested by foreign researchers usually underestimate damping in orifice,N-S equation and boundarylayer theory of laminar flow were used to deduce a new transmittance equation between internal and external pressure for single opening structure. Internal pressure of a model in six different opening cases was tested by excitation of a loud speak which is a special self-developed device for internal pressure study. By fitting the measured internal pressure curves, the applicability of different equations can be examined. The research results show the equation suggested by author is more accurate than the one proposed by foreign researcher in predicting damping and amplitude of internal pressure in opening models.

出版日期: 2012-05-01
:  TU 311.3  
基金资助:

国家自然科学基金资助项目(50908208).

通讯作者: 楼文娟,女,教授,博导.     E-mail: louwj@zju.edu.cn
作者简介: 徐海巍(1986-),男,博士生,从事结构风工程研究.E-mail:haiwe163@163.com
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章  

引用本文:

徐海巍,余世策,楼文娟. 开孔结构内压传递方程的适用性分析[J]. J4, 2012, 46(5): 811-817.

XU Hai-wei, YU Shi-ce, LOU Wen-juan. Applicability analysis on transfer equation of internal
pressure for opening structures. J4, 2012, 46(5): 811-817.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.05.006        http://www.zjujournals.com/eng/CN/Y2012/V46/I5/811

[1] 卢旦, 楼文娟, 唐锦春. 开孔结构风致内压研究[J]. 浙江大学学报:工学版.2005,39( 09):1388-1392.
LU Dan, LOU Wenjuan, TANG Jinchun. Study on windinduced internal pressure of opening structure [J]. Journal of Zhejiang University :Engineering Science, 2005, 39(9):1388-1392.
[2] SHARMA R N, RICHARDS P J. Net pressure on the roof of a lowrise building with wall openings [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2005,93(04): 267-291.
[3] HOLMES J.D. Mean and fluctuating pressures induced by wind [C]∥ Proceedings of 5th International Conference on Wind Engineering. Fort conllins, Colorado:[s. n.],1979:435-450.
[4] LIU H, SAATHOFF P J. Building internal pressure: sudden change[J]. Journal of Engineering Mechanics, 1981,107(02): 309-321.
[5] VICKERY B J , BLOXHAM C. Internal pressure dynamics with a dominant opening[J]. Journal of Wind Engineering and Industrial Aerodynamics,1992, 41(01/03):193-204.
[6] SHARMA R N, RICHARDS P J. Computational modeling of the transient response of building internal pressure to a sudden opening [J]. Journal of Wind Engineering and Industrial Aerodynamics,1997,72(01/03):149-161.
[7] SHARMA R N, RICHARDS P J. Computational modeling in the prediction of building internal pressure gain function [J]. Journal of Wind Engineering and Industrial Aerodynamics, 1997,67&68:815-825.
[8] GUHA T K, SHARMA R N, RICHARDS P J. Analytical and CFD modeling of transient internal pressure response following a sudden opening in building/cylindrical cavities[C]∥ 11th Americas Conference on Wind Engineering. San Juan, Puerto Rico :[s. n.], 2009.
[9] OH J H , KOPP G A, INCULET D R. The UWO contribution to the NIST aerodynamic database for wind load on low buildings: Part 3.Internal pressure[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2007, 95(08):755-779.
[10] GUPTA R C. Laminar flow in the entrance of a tube[J]. Applied Scientific Research, 1977,33(01):1-10.
[11] SHARMA R N .Internal and net envelope pressures in a building having quasistatic flexibility and a dominant opening [J]. Journal of Wind Engineering and Industrial Aerodynamics,2008,96(0607):1074-1083.
[12] 余世策、楼文娟、孙炳楠,等. 背景孔隙对开孔结构风致内压响应的影响[J].土木工程学报.2006,39(06):6-11.
YU SiCe, LOU Wenjuan, SUN Bingnan, et al. Influence of background porosity on windinduced internal pressure response for structures with openings [J]. China Civil Engineering Journal, 2006,39(06):6-11.

[1] 殷平,王彤,谢旭. 考虑桥墩轴力变化影响的刚构桥近场地震反应[J]. J4, 2013, 47(11): 1896-1903.
[2] 罗尧治, 丁慧. 波纹表面月牙形悬挑屋盖风荷载特性[J]. J4, 2013, 47(6): 1063-1071.
[3] 徐海巍,余世策,楼文娟. 开孔结构内压脉动影响因子的试验研究[J]. J4, 2014, 48(3): 487-491.