Abstract：The effects of seventeen roof opening configurations on the internal pressures in a typical TTU building were examined by wind tunnel tests with the volume-scaled method.The configurations examined are of different opening locations and sizes, as well as the different volumes of internal spaces.The spatial distributions of the internal and external pressures and the correlations between them were specially studied.Theoretical methods for estimating the mean and root-mean-square of internal pressures were introduced, and a dimensionless formula for peak internal pressure coefficients ratio was fitted.The results show that the internal pressures in roof opening buildings are highly correlative and coherent, so the internal pressure coefficients in roof opening building can be described by using a unified value.The correlation coefficients between external and internal pressure coefficients are positive, and larger than those in wall opening cases.The mean external pressure coefficients around the opening multiplied by 0.8 can be used to estimate the mean internal pressure coefficients.For single dominant opening buildings, the Helmholtz equation can be used to simulate the fluctuating internal pressure, and the estimation error is below 15% for the wind in vertical orientation. The empirical formulas about the ratio between fluctuating internal pressure and external pressure, and the ratio between peak internal pressure and external pressure were fitted with the non-dimension opening parameters, which are more effective than other methods，such as GINGER method and HOLMES method.
李寿科1，田玉基2，李寿英3，陈政清3，孙洪鑫1. 屋盖开孔建筑的内压风洞试验研究[J]. 振动与冲击, 2016, 35(18): 1-8.
LI Shouke1, TIAN Yuji2, LI Shouying3, CHEN Zhengqing3, SUN Hongxin1. Wind tunnel tests on internal pressures of buildings with a roof opening. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(18): 1-8.
[1] Holmes J D, Mean and fluctuating internal pressures induced by wind, Proceeding 5th International Conference on Wind Engineering[C], Fort Collins, Colorado, USA: Pergamon Press,1979: .435-450.
[2] Liu H, Saathoff P J. Building internal pressure: sudden change[J]. Journal of the Engineering Mechanics Division,1981,107(2):309-321
[3] Vickery B J, Bloxham C. Internal pressure dynamics with a dominant opening[J]. Journal of Wind Engineering and Industrial Aerodynamics,1992, 41(1-3):193-204
[4] Sharma R N, Richards P J. Computational modelling of the transient response of building internal pressure to a sudden opening[J]. Journal of wind engineering and industrial aerodynamics,1997,72:149-161
[5] 余世策.开孔结构风致内压及其与柔性屋盖的耦合作用[D].杭州:浙江大学,2006:100-121(Yu Shice.Wind-induced internal pressure of structure with openings and its coupling effect(in Chinese).Hangzhou:Zhejiang University)
[6] Holmes J D, Ginger J D. Codification of internal pressures for builfing design[C]. Wind Engineering.In:Proc of the Seventh Asia-Pacific Conference on Wind Engineering,Taipei,2009,8-12
[7] Sharma R N, Richards P J. Net pressures on the roof of a low-rise building with wall openings[J]. Journal of wind engineering and industrial aerodynamics,2005, 93(4):267-291
[8] 樊友川.典型工业厂房风荷载及其风振研究[D].上海:同济大学,2011:152-160(Fan Youchuan. Wind loads and wind-induced vibration of typical industrial buildings(in Chinese).Shanghai: Tongji University)
[9] 余先锋, 全涌, 顾明. 开孔两空间结构的风致内压响应研究[J]. 空气动力学学报, 2013, 31(2):151-155.( Yu Xianfeng，Quan Yong，etal. Study on responses of wind-induced internal pressure in a two-compartment building with a dominant opening(in Chinese). Acta aerodynamica sinica,2013, 31(2):151-155)
[10] 徐海巍, 余世策, 楼文娟. 迎风墙面多开孔结构风致内压的试验研究[J]. 振动与冲击, 2014, (15):82-87.( Xu Haiwei，Yu Shice，etal. Tests for wind-induced internal pressure of a building with multiple openings on its windward wall(in Chinese). Journal of vibration and shock, 2014, (15):82-87)
[11] 李寿科.屋盖开孔的近地空间建筑的风效应及等效静力风荷载研究 [D].长沙:湖南大学,2013:32-33(Li shouke. Study of Wind Effects and Equivalent Static Wind Loads On Closing-Ground Building With Roof-Opening(in Chinese).Changsha:Hunan university)
[12] Beste F,Cermak J E.Correlation of internal and area-averaged external wind pressures on low-rise buildings[J].Journal of wind engineering and industrial aerodynamics,1997,69:557-566
[13] Holmes J D, Ginger J D. Internal pressures–The dominant windward opening case–A review[J]. Journal of Wind Engineering and Industrial Aerodynamics,2012, 100(1):70-76
[14] Ginger J D, Holmes J D, Kim P Y. Variation of internal pressure with varying sizes of dominant openings and volumes[J]. Journal of Structural Engineering,2010, 136:1319-1326
[15] Irwin P A , Dunn G. Review of Internal Pressures on Low-Rise Buildings[R]. RWDI Report 93-270. In:Report to Canadian Sheet Steel Institute, Rowan, Williams, Davies and Irwin Inc., Guelph,Ontario,1993:451-480
