基于规范的高层建筑风与地震作用的简明对比
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摘要
根据国家相关规范,比较了风与地震作用对苏南地区矩形截面高层建筑产生的基底剪力与弯矩,推导出相关公式并对其中参数进行了简化处理.计算了高层建筑在两者基底剪力与弯矩相等时的临界高宽比,分析了风与地震作用各在何时起控制作用.经过对比发现:风载荷与地震作用的最主要控制条件为结构高宽比,该现象对高层钢结构而言尤其明显,这与钢结构相对钢筋混凝土结构较轻柔、对风载荷更加敏感的特性是一致的.
According to the related national codes,the base shear and bending moment of the tall buildings with rectangular section in the south of Jiangsu province caused by wind and earthquake action are compared.In addition,correlation formulas are derived and some parameters are simplified.Moreover,the critical height-width ratio in the tall buildings are calculated when the two kinds of the base shear and bending moment are equal.At last,when the wind or earthquake action acts the controlling role to the base shear and moment respectively is analyzed.It is found that the height-width ratio is the most important controlling condition of wind and earthquake action,and the phenomenon is more obvious to high-rise steel structure buildings which is consistent with the characteristics of steel structure that it is lighter and more flexible than reinforced concrete structure,and more sensitive to wind.
引文
[1]MAZZA F,VULCANO A.Control of the earthquake and wind dynamic response of steel-framed buildings byusing additional braces and/or viscoelastic dampers[J].Earthquake Eng Struct Dynam,2011,40(2):155-174.
    [2]DUTHINH D,SIMIU E.Safety of structures in strong winds and earthquakes:multihazard considerations[J].J Struct Eng,2010,136(3):330-333.
    [3]ZHAO B,TAUCERA F,ROSSETTO T.Field investigation on the performance of building structures duringthe 12May 2008Wenchuan earthquake in China[J].Eng Struct,2009,31(8):1707-1723.
    [4]WILLEMSEN E,WISSE J A.Design for wind comfort in the netherlands:procedures,criteria and openresearch issues[J].J Wind Eng Ind Aerodyn,2007,95(9/11):1541-1550.
    [5]KWOK K C S,HITCHCOCK P A,BURTON M D.Perception of vibration and occupant comfort in wind-excit-ed tall buildings[J].J Wind Eng Ind Aerodyn,2009,97(7/8):368-380.
    [6]洪小健,顾明.基于规范的上海高层建筑风和地震作用的比较[J].同济大学学报:自然科学版,2005,33(10):1291-1296.
    [7]中华人民共和国建设部.GB50009—2001建筑结构荷载规范[S].北京:中国建筑工业出版社,2002.
    [8]余江滔,陈统丹,陈建喜,等.设计中顺向风振与水平地震影响的比较[J].四川建筑科学研究,2005,31(5):94-98.
    [9]柯世堂,赵林,葛耀君,等.烟塔合一冷却塔风振与地震作用比较研究[J].武汉理工大学学报,2009,31(19):70-72.
    [10]中华人民共和国建设部.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
    [11]KAUSHIK H B,RAI D C,EERI M,et al.Code approaches to seismic design of masonry-infilled reinforcedconcrete frames:a state-of-the-art review[J].Earthquake Spectra,2006,22(4):961-983.
    [12]AMANAT K M,HOQUE E.A rationale for determining the natural period of RC building frames having infill[J].Eng Struct,2006,28(4):495-502.

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