建筑结构学报2018，Vol.39Issue(1)：11-20,10.DOI:10.14006/j.jzjgxb.2018.01.002
考虑参数随机性的高层建筑风振舒适度的非线性黏滞阻尼器优化布设
Nonlinear viscous damper deployment for wind-induced comfortability control of high-rise buildings with random parameters
摘要
Abstract
The deployment of nonlinear viscous dampers for wind-induced comfortability control of high-rise buildings with random structural parameters is conducted by both traditional optimization scheme (frequency-domain analysis based on stochastic equivalent linearization of the viscously damped structural system) and probability density evolution method (PDEM)-based optimization scheme (time-domain analysis based on the original viscously damped structural system) with target functions relevant to the roof acceleration.It is indicated that in case of the same total damping coefficients,the optimal deployments of nonlinear viscous dampers using the standard deviation and failure probability of the roof acceleration can both mitigate the wind-induced structural acceleration under deterministic wind excitations,which are both more economic and efficient than the uniform deployment of nonlinear viscous dampers.Moreover,the traditional optimization scheme relying upon the minimization of standard deviation of roof acceleration is a deterministic method in essence,and is limited in the promotion of structural reliability;while the PDEM-based optimization scheme relying upon the minimization of failure probability defined by roof acceleration has the advantage of obtaining probability density function,and thereby can improve the comfortability of high-rise buildings under wind actions.关键词
高层建筑/非线性黏滞阻尼器/风振舒适度/失效概率/随机参数Key words
high-rise building/nonlinear viscous damper/wind-induced comfortability/failure probability/stochastic parameters分类
建筑与水利引用本文复制引用
彭勇波,曾小树,陈建兵..考虑参数随机性的高层建筑风振舒适度的非线性黏滞阻尼器优化布设[J].建筑结构学报,2018,39(1):11-20,10.基金项目
国家重点研发计划(2017YFC0803300),国家自然科学基金项目(51538010,11672209),土木工程防灾国家重点实验室探索性研究课题(SLDRCE14-B-20),中央高校基本科研业务费专项. （2017YFC0803300）
