摘要
纵向地震作用下,将输电塔简化为了广义单自由度模型。采用Newmark法的增量形式进行杆塔地震响应分析,并与实际输电塔结构的有限元模型在相同纵向地震作用下计算得到的响应进行比较。计算结果表明,简化模型通过逐步积分计算出的塔顶位移,略大于精细化模型在通用有限元软件中计算出的塔顶位移,差别较小;说明在纵向地震作用下,采用输电塔广义单自由度简化模型可以很好地替代原模型。
Under longitudinal seismic action,the transmission tower was simplified as a generalized single degree of freedom model.The seismic response of the simplified model was calculated using the incremental form of the Newmark method.And the calculation result was compared with the response calculated by the finite element model of the transmission tower under the same longitudinal seismic action.The calculation result indicates that the tower top displacement calculated by the simplified model through the stepwise integration method is slightly larger than that calculated by the refined model using general finite element software,and the difference is relatively small.This indicates that using the generalized single degree of freedom simplified model of transmission tower can effectively replace the original model under longitudinal seismic action.
作者
袁哲峰
牛方义
郭小飞
朱建金
YUAN Zhe-feng;NIU Fang-yi;GUO Xiao-fei;ZHU Jian-jin(China Academy of BuildingResearch Co,Ltd,Beijing 100013,China;CABR Testing Center Co,Ltd,Beijing 100013,China)
出处
《建材世界》
2024年第2期115-118,共4页
The World of Building Materials
基金
中国建筑科学研究院有限公司青年基金项目(20230112331030034)。
关键词
输电塔
纵向地震作用
简化模型
有限元模型
transmission tower
longitudinal seismic action
simplified model
finite element mode