风荷载作用下塔式起重机结构的随机振动分析  

Analysis of random vibration of tower crane structure under wind load

作　　者：王永岩[1] 蔡亚东 乔有涛 张文华 WANG Yongyan;CAI Yadong;QIAO Youtao;ZHANG Wenhua(College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,Shandong,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《中国工程机械学报》2024年第3期375-378,403,共5页Chinese Journal of Construction Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2006A A04Z408-2)。

摘　　要：对塔式起重机的研究一般是将风荷载进行应力等效或者是流体分析,而本文将结合脉动风的随机特性与Ansys的随机振动模块进行分析。首先计算塔机在非工作状况下的预应力模态,确定其固有频率及振型;其次基于Davenport风速谱计算出随机振动模块所需的PSD数据;最后从后处理模块中得到所需的数值。The study of tower crane is generally to conduct stress equivalence or fluid analysis of wind load,and this paper will analyze the random characteristics of fluctuating wind with the random vibration module of Ansys.Firstly,calculate the prestressed mode of the tower crane under non-working conditions,determine its natural frequency and vibration type.Secondly,calculate the PSD data required by the random vibration module based on the Davenport wind speed spectrum,and finally obtain the required value from the post-processing module.

关 键 词：塔式起重机 有限元 起重臂 高层建筑机械 

分 类 号：TU61[建筑科学—建筑技术科学]