摘要
为研究四等分棱柱面网壳的抗震性能,采用有限元法分析空腹、实腹两种棱柱面网壳在地震作用下的位移和内力响应,分别统计并标注敏感构件位置;分析跨度、矢跨比、屋面荷载等参数对结构内力系数的影响并提出不同构件的内力系数设计值。分析结果表明,这类结构以竖向振动为主,不同地震作用下,两种网壳变形和内力系数分布规律相似,敏感构件多分布于地震波先输入的一侧,空腹网壳的结构形式更有利于抗震;参数取值过大均对抗震不利,两种网壳的内力系数设计值可作为实际工程设计的参考。
In order to study the seismic performance of the quartering prism case,the finite element method is used to analyze the displacement and internal force response of hollow and solid prismatic shell,analyze the influence of span,span ratio and roof load on the structure,and finally propose the design value of internal force coefficient of different components.The analysis results show that this kind of structure is dominated by vertical vibration,and the net shell deformation and internal force coefficient distribution law of the two types of shells is similar in that sensitive components are distributed in the input end of the seismic wave,but the hollow shell structure form is more advantageous for earthquake resistance.The internal force coefficient of the two shells can be used as reference for practical engineering design.
作者
蒋沅峻
张华刚
孙仁中
JIANG Yuanjun;ZHANG Huagang;SUN Renzhong(Research Center of Space Structures,Guizhou University,Guiyang 550025,China;Key Laboratory of Structural Engineering of Guizhou Province,Guiyang 550025,China)
出处
《山东理工大学学报（自然科学版）》
CAS
2023年第5期22-29,47,共9页
Journal of Shandong University of Technology:Natural Science Edition
关键词
四等分棱柱面网壳
空腹密肋梁
地震响应
地震内力系数
参数分析
抗震设计
quartering prismatic mesh shell
hollow dense rib beam
seismic response
seismic internal force coefficient
parameter analysis
seismic design
