Influence of Center-Hung Scoreboard On Seismic Response of Single-Layer Spherical Reticulated Shell Under One-Dimensional Horizontal Earthquake

IF 1.1 Q3 ENGINEERING, CIVIL

Journal of the International Association for Shell and Spatial Structures Pub Date : 2022-01-01 DOI:10.20898/j.iass.2022.004

Renjie Liu, Chao-Min Wang, Guangyong Wang, X. Li

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引用次数: 0

Abstract

The center-hung scoreboard is large-scale display device flexibly suspended in the center of the gymnasium. The influence of center-hung scoreboard on seismic response of single-layer spherical reticulated shell is not clear. In this paper, the FEA models of coupling systems composed of single-layer spherical reticulated shell and center-hung scoreboard are established. The seismic responses of coupling systems are calculated by explicit dynamic time history method. The seismic responses of the coupling systems are compared between the flexibly suspended case and the simplified case where the scoreboard is simplified as fixed mass of the support platform. The effects of the sling length and the scoreboard weight on seismic responses of the coupling systems are also discussed. Compared with the simplified case, peak values of displacements, accelerations and axial force are significantly different when the scoreboard is flexibly suspended. The treatment method of simplifying the scoreboard as fixed mass of the support platform is dangerous. The sling length and the scoreboard weight have significant effects on peak values of displacements, accelerations and axial forces of the coupling systems. The envelope values under different sling lengths and different weight should be taken as seismic response results for structural design.

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中心悬挂记分牌对单层球网壳在一维水平地震作用下地震反应的影响

中挂记分牌是灵活悬挂在体育馆中心的大型显示装置。中心悬挂记分牌对单层球网壳地震反应的影响尚不清楚。本文建立了由单层球网壳和中挂记分板组成的耦合系统的有限元模型。采用显式动力时程法计算了耦合体系的地震响应。比较了柔性悬架与将计分板简化为支撑平台固定质量的简化情况下耦合系统的地震响应。还讨论了吊索长度和计分板重量对耦合系统地震反应的影响。与简化情况相比，灵活悬挂记分牌时的位移峰值、加速度峰值和轴向力峰值存在显著差异。将计分板简化为支撑平台的固定质量的处理方法是危险的。吊索长度和记分牌重量对耦合系统的位移峰值、加速度峰值和轴向力峰值有显著影响。不同吊索长度和不同重量下的包络线值应作为结构设计的地震反应结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the International Association for Shell and Spatial Structures ENGINEERING, CIVIL-

CiteScore

1.40

自引率

0.00%

发文量

期刊介绍： The Association publishes an international journal, the Journal of the IASS, four times yearly, in print (ISSN 1028-365X) and on-line (ISSN 1996-9015). The months of publication are March, June, September and December. Occasional extra electronic-only issues are included in the on-line version. From this page you can access one or more issues -- a sample issue if you are not logged into the members-only portion of the site, or the current issue and several back issues if you are logged in as a member. For any issue that you can view, you can download articles as .pdf files.