结构阻尼比对超高层建筑顺风向风振响应的影响

Influence of Structural Damping Ratio on Windward Vibration Response of Super Tall Buildings

以某超高层建筑结构为工程研究背景,主要研究了阻尼比对风振响应(基底剪力、楼层位移、加速度)的影响,结果表明:阻尼比较大时,其对结构顺风向的风振响应影响较小;随着阻尼比的增加,风振响应(基底剪力、楼层位移)最大值减小幅度较大,而均方根值和平均值减小幅度较小,几乎无太大变化;随着阻尼比的增加,顶层加速度最大值、最小值和均方根值变化量比较大,而平均值几乎无变化。

Taking a super high rise building structure as the engineering research background,the influence of damping ratio on wind induced vibration response(base shear force,floor displacement,acceleration)was mainly studied.The results are as follows.When the damping ratio is large,its impact on the wind induced vibration response of the structure in the downwind direction is relatively small.As the damping ratio increases,the maximum value of wind induced response(base shear force,floor displacement)decreases significantly,while the root mean square value and average value decrease slightly,with almost no significant change.As the damping ratio increases,the maximum,minimum,and root mean square values of the top level acceleration change significantly,while the average value remains almost unchanged.