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《Chinese Quarterly of Mechanics》 2008-03
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Preliminary Study of Material Damping Ratio Range for Foundation Soil of High Rise Building under Wind Induced Vibration

LI An-yong~(1,2) CHEN Rong~1 XUE Song-tao~(1,3) TANG He-sheng~1 L(?) Peng~1 1.Research Institution of Structural Engineering and Disaster Reduction.Tongji University,Shanghai 200092,China 2.Departament of Civil Engineering,USTS,Suzhou 215011,China 3.Department of Architecture,School of Science and Engineering,Kinki University,Osaka 577-8502,Japan  
After considering soil-structure interaction(SSI)effects to the along-wind vibration response of high-rise building,the range of material damping ratio of foundation Soils is the key factor whether the effect of SSI is favorable or not for the response of the structure under wind induced vibration.After ana- lyzing the response of frame-shear wall structures without piles under the along-wind induced vibration considering soil-structure interaction,it is found that the dynamic shear strain of the soil is in elastic range.According to the relationship between the damping ratio and shear strain the material damping rati- o of foundation Soils is less than 0.03,and the corresponding maximum story displacement and the accel- eration response is greater than that when the soil foundation is considered as rigid.For the safety of high-rise structures,the effect of SSI should be considered to analyze the response of frame-shear wall structures without piles under wind induced vibration.The suggested value of material damping ratio for the soil of this kind structure was given.The analytic approach provides useful reference for more higher structures with piles.
【CateGory Index】: TU311.3
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