摘要
基于通用有限元分析软件对某组合式塔架结构的抗震性能进行分析,主要研究了铝合金塔架底部支承在不同高度钢塔架条件下结构的模态与不同地震波作用下的结构动力响应.分析结果表明:下部钢塔架与上部铝合金塔架的材料特性与截面尺寸的变化导致整体结构自振频率会减小;同时,随着钢塔架高度的增加结构顶部最大水平位移会逐渐增大,然而位移角的最大值出现在底部钢塔架高度为20m的工况.另外,最大应力会出现在组合式塔架变截面的部位,可为此类组合式塔架结构的设计提供一定参考.
Seismic performances of a combined tower structure were analyzed by using FEA model and dynamic responses of the combined steel tower were studied. The analysis results structure in different types of seismic waves and different ware. The heights of showed that the change of material characteristic and cross section size in the lower steel tower and upper alumina one lead to the natural frequency of overall structure decreases Meanwhile, as the height of lower steel tower increasing, the peak displacement of the combined tower under earth quake gradually increases. And the displacement angle reaches the peak value when the height of bottom steel tower is 20m. Additionally,the maximum stress of structure occurs the tapered section of the combined tower,providing a reference for design of such combined tower structure.
作者
赵静
赵建林
闫发林
涂佳黄
ZHAO Jing;ZHAO Jian lin;YAN Fa lin;TU Jia huang(Kuancheng Manzu Autonomous County Construction Engineering Super＇vision Co.ltd,Chengde 067600,Hebei,China;Chengde Tianyi Construction Engineering ＆ GeotechnicaL Co.ltd,Chengde 067600,Hebei,China;Shanghai United Design Group INC Shanghai 200093 China;Colleg e of Civil Engineering and Mechanics Xiangtan University,Xiangtan d 11105,Hunan,China)
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
2018年第6期474-479,共6页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
湖南省自然科学基金资助项目(2016JJ3117)
湖南省教育厅资助科研项目(15C1318)
湘潭大学自然科学研究项目(15XZX37)
关键词
组合式塔架
模态分析
弹塑性时程分析
有限元方法
combined tower
modal analysis
elastic plastic time history analysis
finite element method
