Vibration Testing at Meazza Stadium: Reliability of Operational Modal                    Analysis to Health Monitoring Purposes

Cigada, Alfredo; Caprioli, A.; Redaelli, Matteo; Vanali, Marcello

doi:10.1061/(asce)0887-3828(2008)22:4(228)

Cited by 44 publications

(17 citation statements)

References 15 publications

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“…This section describes the measurement setup, paying particular attention to transducers placement, exploiting previous experiences made by the Politecnico di Milano, and to their selection, based on their metrological performances [4].…”

Section: Measurement Set-upmentioning

confidence: 99%

Long term operational modal analysis of a stadium grandstand to structural health monitoring purposes

Vanali

Cigada

2009

2009 IEEE Workshop on Environmental, Energy, and Structural Monitoring Systems

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In the last years an increasing interest has been devoted to all the topics related to security and safety of people. Particular attention has been paid to health monitoring of large civil structures hosting lot of people, like high-rise buildings and stadia. The vast scientific literature confirms the possibility to relate structural health to the evolution of modal parameters, often reaching the aim of localizing any eventual damage, a task otherwise impossible with different techniques. This paper shows a part of the long lasting project involving Politecnico di Milano in the setting up of a permanent health monitoring system at the G. Meazza stadium in Milan. As damage identification is related to changes of the modal parameters, the evaluation of their normal spread is fundamental to fix a threshold in order to identify possible worrying situations. This paper deals with the identification of the spread in the modal parameter estimation of one of the grandstands of the so-called 3° ring of the G. Meazza stadium in Milan, setting up an automated Operational Modal Analysis algorithm and analyzing a first set of data. Some ideas are gathered in order to identify the minimum number of identifications needed to have a robust estimation of the modal parameters.

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Section: Measurement Set-upmentioning

confidence: 99%

Long term operational modal analysis of a stadium grandstand to structural health monitoring purposes

Vanali

Cigada

2009

2009 IEEE Workshop on Environmental, Energy, and Structural Monitoring Systems

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“…This is one of the main limitations of operational modal analysis (OMA), which only provides unscaled modal models, because the loads acting on the structure are not known (e.g. [1,2,3,4,5,6]).…”

Section: Introductionmentioning

confidence: 99%

Global scaling of operational modal analysis modes with the OMAH method

Brandt

Berardengo

Manzoni

et al. 2019

Mechanical Systems and Signal Processing

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“…The UC Berkeley California Memorial Stadium, located in a seismically hazardous area, was rehabilitated by researchers [2]. Vibration control of stadiums is another aspect of studies in this field, and it mostly focuses on the serviceability of stadiums [3][4][5][6]. The influence of crowds on the structural characteristics of a stadium was also determined in previous research [7].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Seismic Response of a Multifunctional Stadium Equipped With LRB Isolators Under Near-Field Earthquakes

Vatanshenas

Bajestany

Hajihoseinloo

et al. 2018

e-GFOS

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Disasters have always coexisted with civilization, and it is impossible to prevent earthquakes from occurring; however, it is possible to reduce the effects and decrease the loss of life, as well as injuries and damage to structures and infrastructure facilities. Investigating the safety of crowded places, such as stadiums, where many people gather for special events is of utmost importance. One of the most effective methods to counter an earthquake's force is the use of seismic isolators. Therefore, the seismic performance of a multifunctional stadium with and without lead rubber bearings (LRBs) during near-field earthquakes was studied in this research. It was found that the seismic isolators dissipated the input earthquake energy, and the isolated stadium received less base shear force and drift during the earthquake. It was observed that adding seismic isolators to the stadium had a significant positive effect on its behavior, and this technique is highly recommended to ensure residents' safety in near-field regions.Sažetak: Katastrofe su oduvijek bile prisutne tijekom razvoja civilizacija pa je i nastanak potresa nemoguće spriječiti, ali je moguće smanjiti učinke potresa: smanjiti ozljeđivanje i smrtnost ljudi te oštetljivost konstrukcija i infrastrukturnih objekata. Izrazito je važno istražiti sigurnost napučenih objekata kao što su stadioni, gdje se ljudi okupljaju u vrijeme posebnih događaja. Među najučinkovitijim metodama za smanjenje sila potresa je uporaba izolatora. Stoga je u ovom istraživanju provedena seizmička analiza višenamjenskog stadiona s i bez elastomernih ležajeva pri potresnom djelovanju s plitkim žarištem. Utvrđeno je da je uporabom elastomernih ležajeva došlo do disipacije energije potresa, te da je stadion s izolatorima imao manje poprečne sile i međukatne pomake tijekom potresa. Uočeno je također da dodavanje seizmičkih izolatora ima važan pozitivan učinak na ponašanje stadiona pri djelovanju potresa. Ova se metoda preporučuje kako bi se osigurala sigurnost stanovnika u područjima s čestim potresima s plitkim žarištima.Ključne riječi: elastomerni ležajevi; potresi s plitkim žarištem; nelinearna analiza zapisom potresa u vremenu; metalne konstrukcije; izolacija od potresa; kontrola vibracija

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Vibration Testing at Meazza Stadium: Reliability of Operational Modal Analysis to Health Monitoring Purposes

Cited by 44 publications

References 15 publications

Long term operational modal analysis of a stadium grandstand to structural health monitoring purposes

Long term operational modal analysis of a stadium grandstand to structural health monitoring purposes

Global scaling of operational modal analysis modes with the OMAH method

Enhancing the Seismic Response of a Multifunctional Stadium Equipped With LRB Isolators Under Near-Field Earthquakes

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