2015/10/3 Taremeedpeg wind WingEngineeringreeare Transient wind Mean wind and transient wind on tall buildings H 度风速 度风高度么 （）面 3.3.1 Influences on tall buildings 3.3.1 Wind load influences on tall Characteristics of mean wind speed buildings 。ary with height Wind speed (mean speed,transient speed) ld roughness 10min an Building shape; Height from ground to wind load's location Characteristics of transient wind oConcentration degree of buildings: v 10s an Influences by dlosely located tall buildings value s near zr ary little as height change. 本课件版权归作者所有，仅供个人学习使用，请勿转载。 6 2015/10/3 5 Transient wind speed and Mean wind speed Wing Engineering researches Field Monitory Tunnel Test Numerical Simulation Mean wind and transient wind on tall buildings Transient wind Mean wind  Characteristics of mean wind speed  vary with height;  relevant to field roughness ;  no significant change between 10min and 1h;  return years : 10years, 50years, and 100years. 3.3.1 Influences on tall buildings  Characteristics of transient wind  fluctuating wind，with period approximately 10s and larger than building’s fundamental period,  average value is near zero,  vary little as height changes. 3.3.1 Wind load influences on tall buildings  Wind speed (mean speed, transient speed);  Building shape;  Height from ground to wind load’s location；  Concentration degree of buildings；  Influences by closely located tall buildings. 本课件版权归作者所有，仅供个人学习使用，请勿转载