拟建高大建筑对邻近建筑整体风荷载的影响
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摘要
基于一栋既有高层建筑的刚性模型测压风洞试验,讨论了邻近更高大的拟建超高层建筑及周边其他建筑对其整体风荷载的干扰效应.试验结果表明,当拟建超高层建筑处在上游时,遮挡效应一般会减小下游既有建筑的顺风向气动力平均值,但尾流旋涡脱落现象会导致下游既有建筑的横风向风荷载峰值显著增大,这可能使得下游既有建筑的原始结构设计偏于危险.
Based on a series of wind tunnel tests conducted on the rigid model of an actual high-rise building, wind dynamic interference effects on the target building of the proposed super high-rise building and other surrounding buildings were investigated. The results show that upon completion of the proposed building upstream, the shielding effect of it will generally reduce the along-wind mean aerodynamic force of the existing buildings downstream. However, the vortex shedding in its wake may lead to a significant increase in the across-wind peak wind load of the existing buildings downstream, which means that these downstream buildings under the original structural design may no longer be safe.
Based on a series of wind tunnel tests conducted on the rigid model of an actual high-rise building, wind dynamic interference effects on the target building of the proposed super high-rise building and other surrounding buildings were investigated. The results show that upon completion of the proposed building upstream, the shielding effect of it will generally reduce the along-wind mean aerodynamic force of the existing buildings downstream. However, the vortex shedding in its wake may lead to a significant increase in the across-wind peak wind load of the existing buildings downstream, which means that these downstream buildings under the original structural design may no longer be safe.
引文
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[2] TANIIKE Y.Interference mechanism for enhanced wind forces on neighbouring tall buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,1992,41(1/3):1073.
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[5] GU M.,XIE Z N,HUANG P.Along-wind Dynamic Interference Effects of Tall Buildings [J].Advances in Structural Engineering,2005,8(6):623.
[6] XIE Z N,GU M.Simplified formulas for evaluation of wind-induced interference effects among three tall buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2007,95(1):31.
[7] LAM K M,LEUNG M Y H,ZHAO J G.Interference effects on wind loading of a row of closely spaced tall buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2008,96(5):562.
[8] LAM K M,ZHAO J G,LEUNG M Y H.Wind-induced loading and dynamic responses of a row of tall buildings under strong interference [J].Journal of Wind Engineering and Industrial Aerodynamics,2011,99(5):573.
[9] KIM W,TAMURA Y,YOSHIDA A.Interference effects on local peak pressures between two buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2011,99(5):584.
[10] KIM W,TAMURA Y,YOSHIDA A.Interference effects on aerodynamic wind forces between two buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2015,147:186.
[11] HUI Y,YOSHIDA A,TAMURA Y.Interference effects between two rectangular-section high-rise buildings on local peak pressure coefficients [J].Journal of Fluids and Structures,2013,37:120.
[12] YU X F,XIE Z N,ZHU J B,et al.Interference effects on wind pressure distribution between two high-rise buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2015,142:188.
[13] YAN B,LI Q S.Wind tunnel study of interference effects between twin super-tall buildings with aerodynamic modifications [J].Journal of Wind Engineering and Industrial Aerodynamics,2016,156:129.
[14] HUI Y,TAMURA Y,YANG Q S.Analysis of interference effects on torsional moment between two high-rise buildings based on pressure and flow field measurement [J].Journal of Wind Engineering and Industrial Aerodynamics,2017,164:54.
[2] TANIIKE Y.Interference mechanism for enhanced wind forces on neighbouring tall buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,1992,41(1/3):1073.
[3] KHANDURI A C,STATHOPOULOS T,BEDARD C.Wind-induced interference effects on buildings——a review of the state-of-the-art [J].Engineering Structures,1998,20(7):617.
[4] XIE Z N,GU M.Mean interference effects among tall buildings [J].Engineering Structures,2004,26(9):1173.
[5] GU M.,XIE Z N,HUANG P.Along-wind Dynamic Interference Effects of Tall Buildings [J].Advances in Structural Engineering,2005,8(6):623.
[6] XIE Z N,GU M.Simplified formulas for evaluation of wind-induced interference effects among three tall buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2007,95(1):31.
[7] LAM K M,LEUNG M Y H,ZHAO J G.Interference effects on wind loading of a row of closely spaced tall buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2008,96(5):562.
[8] LAM K M,ZHAO J G,LEUNG M Y H.Wind-induced loading and dynamic responses of a row of tall buildings under strong interference [J].Journal of Wind Engineering and Industrial Aerodynamics,2011,99(5):573.
[9] KIM W,TAMURA Y,YOSHIDA A.Interference effects on local peak pressures between two buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2011,99(5):584.
[10] KIM W,TAMURA Y,YOSHIDA A.Interference effects on aerodynamic wind forces between two buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2015,147:186.
[11] HUI Y,YOSHIDA A,TAMURA Y.Interference effects between two rectangular-section high-rise buildings on local peak pressure coefficients [J].Journal of Fluids and Structures,2013,37:120.
[12] YU X F,XIE Z N,ZHU J B,et al.Interference effects on wind pressure distribution between two high-rise buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2015,142:188.
[13] YAN B,LI Q S.Wind tunnel study of interference effects between twin super-tall buildings with aerodynamic modifications [J].Journal of Wind Engineering and Industrial Aerodynamics,2016,156:129.
[14] HUI Y,TAMURA Y,YANG Q S.Analysis of interference effects on torsional moment between two high-rise buildings based on pressure and flow field measurement [J].Journal of Wind Engineering and Industrial Aerodynamics,2017,164:54.