复杂断面高层建筑的风致响应及其振动控制研究

发布时间：2018-01-30 13:22

本文关键词： 复杂高层建筑风致响应振动控制优化设计　出处：《厦门大学学报(自然科学版)》2017年06期 　论文类型：期刊论文

【摘要】：复杂断面高层建筑在强风作用下,往往会产生较为明显的扭转响应,从而导致高层建筑顶部角点处的加速度值大大超过规范规定的限值.以弧形、平行四边形以及等边L形等3种断面的高层建筑为研究对象,计算了复杂断面高层建筑顶部角点处的风致加速度响应,进行了多个调频质量阻尼器(MTMD)减振系统的设计和优化研究.结果表明,在不使用MTMD进行风振控制时,3种断面高层建筑顶部角点处的加速度响应均超过限值,在合理布置MTMD并进行优化设计后,角点处的加速度响应可以得到有效抑制并取得较好的减振效果.
[Abstract]:Under the action of strong wind, the complex section high-rise building often produces a more obvious torsional response, which leads to the acceleration at the top corner of the high-rise building greatly exceeds the limit specified in the code. High-rise buildings with parallel quadrilateral and L-shaped equilateral sections are studied. The wind-induced acceleration response at the top corner of high-rise building with complex cross-section is calculated. The design and optimization of multiple tuned mass dampers (MTMDs) are studied. The results show that MTMD is not used for wind-induced vibration control. The acceleration response at the top corner of the three cross-section high-rise buildings is above the limit. After the MTMD is arranged reasonably and the optimum design is carried out. The acceleration response at the corner can be effectively suppressed and a better damping effect can be obtained.
【作者单位】：厦门大学建筑与土木工程学院;
【分类号】：TU973.213
【正文快照】： 随着高度的增加,风荷载对高层建筑结构的作用愈趋显著,影响越来越大,可能引起较大的结构位移和加速度响应.而平面或立面不规则的高层建筑,风对其影响更加复杂,若利用适用于规则建筑的理论来预测、计算风对不规则建筑的影响则是不全面和偏于不安全的.同矩形断面等平面规则高层

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