Structural Identification of a Masonry Tower Based on Operational Modal Analysis

Gentile, Carmelo; Saisi, A.; Cabboi, Alessandro

doi:10.1080/15583058.2014.951792

Cited by 112 publications

(69 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, while the use of Operational Modal Analysis (OMA) techniques is well-established for performing dynamic structural investigations and/or implementing continuous monitoring of relatively new slender structures [8,9], their application in the context of heritage monumental buildings is far less common. A few documented applications of vibration-based monitoring to monumental buildings are however available, whereby some literature studies have proposed the use of OMA techniques for the dynamic identification of masonry civil and bell towers [10,11,12]. On the contrary, applications to different kinds of historic structures are quite rare and only a few studies have proposed to use OMA techniques in the context of continuous dynamic monitoring systems [13,14].…”

Section: Introductionmentioning

confidence: 99%

First Results of the Vibration-Based Structural Health Monitoring of a Masonry Dome

Cavalagli¹,

Comanducci²,

Gioffré³

et al. 2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

View full text Add to dashboard Cite

Abstract. This paper newly proposes the use of ambient vibration testing, vibration-based continuous dynamic monitoring and automated modal identification for structural assessment of monumental masonry domes. The final purpose of this research is the development of a general methodology for online structural health monitoring of large domes, enabling early detection of damages caused by low return period earthquakes, in a general framework of preventive conservation and heritage resilience. The case study considered here is the dome of the Basilica of Santa Maria degli Angeli in Assisi, recently added to the World Heritage List of Unesco. The basilica is located in the center of Italy and it was built between 1569 and 1679 on the design of the architect Galeazzo Alessi. It consists of a latin cross plan, with 126 m and 65 m dimensions, with a nave, two aisles and a semicircular apse. At the intersection between the transept and nave the building hosts the Porziuncola, a little ancient chapel, symbol of Franciscan spirituality and pilgrims destination since the construction of the basilica.In order to preliminary assess the structural behavior of the dome, several dynamic experimental investigations have been carried out and ended with the installation of a simple vibration-based monitoring system, based on the use of a few high sensitivity accelerometers, placed at the top and the base of the drum, as well as temperature and humidity sensors. This paper presents and discusses the first results of the vibration-based monitoring of the drumdome system, demonstrating the potential for using similar approaches for the preservation of this special kind of historic structures. 5359

show abstract

Section: Introductionmentioning

confidence: 99%

First Results of the Vibration-Based Structural Health Monitoring of a Masonry Dome

Cavalagli¹,

Comanducci²,

Gioffré³

et al. 2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

View full text Add to dashboard Cite

show abstract

“…Then, the updated models can be used to predict future structural behavior or diagnose potential damage, when dynamics alterations are detected on buildings [14]. One example of these kinds of study is reported by Gentile et al [15]. They performed an extensive structural assessment program on a historic bell tower.…”

Section: Introductionmentioning

confidence: 99%

Damage Identification of Unreinforced Masonry Panels Using Vibration-Based Techniques

Oyarzo-Vera

Chouw

2017

Shock and Vibration

View full text Add to dashboard Cite

Several damage indicators based on changes in modal properties validated for homogeneous materials were applied to detect damage in an unreinforced masonry cantilever panel. Damage was created by a "clean diagonal cut" at the center of the specimen which length was progressively extended towards the specimen's corners. Numerical simulations were employed to determine the modal response at several damage states and this data was used to calculate the damage indicators. Those indicators presenting a good performance were then applied to identify damage on a physical specimen tested in the laboratory. The outcomes of this study demonstrated that vibration-based damage detection in unreinforced masonry structures can be satisfactorily performed. However, the identification of the damage spatial distribution using vibration-based methods in unreinforced masonry structures is still difficult. To improve the prediction of damage distribution, a large number of measurement points need to be considered to obtain an acceptable level of resolution.

show abstract

“…Most of the previous studies investigated to determine the modal parameters of historical masonry structures [5][6][7][8][9]. Because only few studies [10][11] were conducted about the determining the modal parameters of historical masonry minarets, in this study, it is intended to perform experimentally and numerically analyses to investigate the modal parameters of a masonry type historical minaret.…”

Section: Introductionmentioning

confidence: 99%

Determination of Modal Parameters of Historical Masonry Minarets by using Operational Modal Analysis

Hacıefendioğlu¹,

Demir²,

Alpaslan³

2016

World Congress on Civil, Structural, and Environmental Engineering

View full text Add to dashboard Cite

-This study conducted to investigation of modal parameters (such as mode shapes, modal frequencies ) of a masonry type historical minaret by performing numerical and experimental analys es. Operational Modal Analysis (OMA) Technique is used for experimental study to obtain modal parameters of historical masonry minarets. For this purpose, Büyük Mosque located in Samsun, Turkey, was chosen for the experimental analysis. The Frequency Domain Decomposition (FDD) method is utilized to identify the natural frequencies and mode shapes experimentally. ANSYS software is used to carry out 3D finite element modelling of the historical masonry minaret and determine the natural frequencies and mode shapes of the minaret analytically. Furthermore, the finite element model of the minaret is calibrated according to the experimental results by using t he Response Surface based finite element (FE) model calibration technique to obtain more accurate results of the modal parameters of the structure. The results of experimental, initial and calibrated finite element model were compared to each other. It can be noticed significant differences when comparing the results of the experimental and analytical with the initial conditions. Model calibration techniques are necessary to obtain more reasonable finite element model.

show abstract

Structural Identification of a Masonry Tower Based on Operational Modal Analysis

Cited by 112 publications

References 16 publications

First Results of the Vibration-Based Structural Health Monitoring of a Masonry Dome

First Results of the Vibration-Based Structural Health Monitoring of a Masonry Dome

Damage Identification of Unreinforced Masonry Panels Using Vibration-Based Techniques

Determination of Modal Parameters of Historical Masonry Minarets by using Operational Modal Analysis

Contact Info

Product

Resources

About