基于振动分析的同步人群激励下体育看台的无损检测

Non-Destructive Testing of a Sport Tribune under Synchronized Crowd-Induced Excitation Using Vibration Analysis.

作者信息

Grębowski Karol, Rucka Magdalena, Wilde Krzysztof

机构信息

Department of Technical Fundamentals of Architectural Design, Faculty of Architecture, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.

Department of Mechanics of Materials and Structures, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.

出版信息

Materials (Basel). 2019 Jul 4;12(13):2148. doi: 10.3390/ma12132148.

DOI:10.3390/ma12132148

PMID:31277377

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6651184/

Abstract

This paper presents the concept of repairing the stand of a motorbike speedway stadium. The synchronized dancing of fans cheering during a meeting brought the stand into excessive resonance. The main goal of this research was to propose a method for the structural tuning of stadium stands. Non-destructive testing by vibration methods was conducted on a selected stand segment, the structure of which recurred on the remaining stadium segments. Through experiments, we determined the vibration forms throughout the stand, taking into account the dynamic impact of fans. Numerical analyses were performed on the 3-D finite element method (FEM) stadium model to identify the dynamic jump load function. The results obtained on the basis of sensitivity tests using the finite element method allowed the tuning of the stadium structure to successfully meet the requirements of the serviceability limit state.

摘要

本文提出了修复摩托车赛道体育场看台的概念。在一次赛事期间，球迷们同步欢呼跳舞使看台产生了过度共振。本研究的主要目标是提出一种体育场看台结构调整的方法。通过振动方法对选定的看台部分进行了无损检测，该部分的结构在体育场其余部分重复出现。通过实验，我们考虑了球迷的动态影响，确定了整个看台的振动形式。对三维有限元法（FEM）体育场模型进行了数值分析，以确定动态跳跃荷载函数。基于有限元法的灵敏度测试所获得的结果，使得体育场结构的调整能够成功满足正常使用极限状态的要求。