中文摘要：

对刚性开孔结构在斜风向作用下的内压响应进行了风洞试验研究。在浙江大学 ZD-1边界层风洞中对单一开孔的刚性结构在均匀流场和湍流场中进行了动态内压的测试，探讨了风向角、湍流度、风速、孔口特征等参数对内压响应的影响，重点分析了斜风向作用下内压动态响应的特征，初步探索了涡激内压共振的机理。研究发现在斜风作用下以封闭结构孔口处平均风压来估算平均内压会偏危险；刚性开孔结构在斜风向作用下会产生涡激内压共振效应，导致内压脉动增大，斜风剪切流在孔口处产生涡脱落与 Helmholtz 共振的共同作用是产生涡激内压共振的原因。参数对比试验结果表明，湍流强度越小、风速越高，涡激内压共振发生的可能性越大，扁矩形孔口能抑制内压涡激共振的发生。

英文摘要：

Wind tunnel tests were conducted to study internal pressure response induced by oblique flow for rigid structure with opening.The dynamic internal pressures of rigid structure with single opening were tested induced by both uniform flow and turbulent flow in ZD-1 boundary wind tunnel of Zhejiang Universi-ty.Rigid structure was made of steel plates,The internal volume is 0.0064m3 ,the panel size is 500mmx500mm,an orifice with the area of 1256mm2 and the depth of 4mm was arranged in the middle of the panel, the shape of the orifice is square,circular and rectangular respectively with aspect ratio of 1∶2.For uniform flow ,the turbulence intensity is less than 0.5% and the wind speed selected as 5m/s,10m/s,15m/s and 20m/s.For turbulent flow,the wind speed is 10m/s and the turbulence intensity is 10% and 20%.The en-closed opening external pressure and internal pressure of structure were tested respectively under the 0°-90° of wind angle with sampling frequency up to 625Hz.The inference of parameters such as wind angle,turbu-lence intensity,wind velocity,orifice characteristics were investigated.The characteristics of dynamic inter-nal pressure induced by oblique flow were analyzed in emphases,and the mechanism of vortex-induced inter-nal pressure resonance was explored preliminarily.The study show that,the difference of internal and exter-nal pressure coefficient in the uniform oblique flow for 55°-75°wind angle is more than 0.2,which confirm that there is drive phenomenon under the oblique flow,and the estimation of mean external wind pressure in opening as mean internal pressure will be dangerous.Vortex-induced internal pressure resonance will appear for rigid structure with opening induced by oblique flow for near 50°wind angle,which lead to fluctuating in-ternal pressure increasing.The vortex shedding resonance effected by the growth of eddies across the orifice and the interaction with the Helmholtz resonance are the mean reasons for the existence of vortex induced in-ternal pressure resonance.Parameter co