Dynamic characterisation and seismic assessment of medieval masonry towers

Ferraioli, Massimiliano; Miccoli, Lorenzo; Abruzzese, Donato; Mandara, Alberto

doi:10.1007/s11069-016-2519-2

Cited by 39 publications

(13 citation statements)

References 45 publications

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“…10 presents the parameters used for FE model updation of heritage structures which are available in literature. [Jaishi, Ren, Zong et al (2003); Pradhan, Singhal, Mondal et al (2012);Ferraioli, Miccoli, Abruzzese et al (2017)].…”

Section: Finite Element Model Updationmentioning

confidence: 99%

System Identification of Heritage Structures through AVT and OMA: A Review

Shimpi¹,

Sivasubramanian²,

Singh³

2019

Structural Durability &Amp; Health Monitoring

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In this review article, the past investigations carried out on heritage structures using Ambient Vibration Test (AVT) and Operational Modal Analysis (OMA) for system identification (determination of dynamic properties like frequency, mode shape and damping ratios) and associated applications are summarized. A total of 68 major research studies on heritage structures around the world that are available in literature are surveyed for this purpose. At first, field investigations carried out on heritage structures prior to conducting AVT are explained in detail. Next, specifications of accelerometers, location of accelerometers and optimization of accelerometer networks have been elaborated with respect to the geometry of the heritage structures. In addition to this, ambient vibration loads and data acquisition procedures are also discussed. Further, the state of art of performing OMA techniques for heritage structures is explained briefly. Furthermore, various applications of system identification for heritage structures are documented. Finally, conclusions are made towards errorless system identification of heritage structures through AVT and OMA.

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Section: Finite Element Model Updationmentioning

confidence: 99%

System Identification of Heritage Structures through AVT and OMA: A Review

Shimpi¹,

Sivasubramanian²,

Singh³

2019

Structural Durability &Amp; Health Monitoring

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“…The modal characteristics, such as modal shapes and frequencies, can be experimentally identified to characterize the current conditions of a structure [24][25][26][27], which is the base for the design of the strengthening and retrofitting interventions. Dynamic tests in Operational Conditions are reliable tools for non-destructively characterizing the linear dynamic of historical structures [28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Operational Modal Analysis, Model Update and Fragility Curves Estimation, through Truncated Incremental Dynamic Analysis, of a Masonry Belfry

et al. 2021

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Masonry towers, located in seismic zones, are vulnerable and prone to damages up to compromise their stability. The scatter of data on the mechanical properties of masonry, geometry and boundary conditions determine a lack of building knowledge on their expected behaviour. Therefore the assessment of the seismic capacity represents a critical task. This paper contributes to the issue of seismic analysis of masonry towers, focusing a meaningful case study: the St.Silvestro belfry in L’Aquila, Italy. The tower, severely damaged by the 2009 earthquake sequence, underwent extensive restoration works, endeavoured to mitigate its vulnerability. The observed seismic damage, the performed no-destructive testing campaign and the accomplished rehabilitation measures are described in the paper. The authors appraised the actual seismic performances of the St.Silvestro belfry, reinforced by the last restoration works. At first, the Operational Modal Analysis (OMA) is carried out to enhance building knowledge. In a second step, a refined finite element model is calibrated on the results from OMA to seize the actual dynamic response. Ultimately, by using the updated finite element model, the authors estimate the fragility curves in terms of peak ground acceleration using truncated incremental dynamic analyses.

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“…Some improved and combined identification models, such as a finite element-perfectly matched layers model, [10] are generated to estimate the dynamic properties of soil-foundation systems. [11] Moreover, some novel methods and methodologies are developed and used in the modal identification, such as two-stage system identification methodology, [12] random decrement technique, [13] modal extraction techniques in the frequency domain, [14] spectral analysis and waveform approaches, [15] an indirect boundary element method, [16] refined frequency domain decomposition algorithm, [17] and sophisticated parameter prediction error method. [18] In the health monitoring control community, experiments and measurements are effective ways and useful tools to identify the modal parameters and understand the structural behavior, such as prototype dynamic centrifuge experiments [19] and controlled vibration test.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics and viscous dampers design for pile‐soil‐structure system

Yang

Jing

2020

Structural Design Tall Build

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Summary A series of large‐scale shaking table tests are conducted on tall buildings with and without energy dissipation devices on soft soils in pile group foundations, representing pile‐soil‐structure interaction (PSSI) system and the corresponding fixed‐base situations. The superstructure is a 12‐story reinforced concrete (RC) frame. The dynamic characteristics of the test models show that the frequencies decrease and the damping ratio increase in PSSI system by comparison with the fixed‐base structures. The mode shapes of PSSI system are different from that under fixed‐base condition, and the mode shapes of structure without dampers change greater than that with energy dissipation devices under various white noises. An improved method for structural dynamic characteristics, considering the impedance function of piles, is developed to address the issue of modal parameters with PSSI effect. In addition, the structural dynamic parameters of the large‐scale shaking table tests are identified using the modification method and other regulation methods, demonstrating that the improved approach is highly accurate and effective. Subsequently, a design procedure for viscous dampers of structures with PSSI effect is presented based on the dynamic characteristics of the system. Finally, the dynamic responses of the structure with viscous dampers in the practical engineering are decreased effectively, indicating the good performance of designed viscous dampers. The numerical results also show that the damping efficiency of interstory drift is larger than the acceleration and interstory shear force. Therefore, the improved modal parameters method, validated through a series large‐scale shaking table tests, is applicable for identifying dynamic characteristics of pile‐soil‐structure with energy dissipation devices system. The design procedure of viscous dampers, proved by a reinforced concrete frame structure located on a practical Shanghai soft site, can be employed to design the viscous dampers considering seismic PSSI effect.

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Dynamic characterisation and seismic assessment of medieval masonry towers

Cited by 39 publications

References 45 publications

System Identification of Heritage Structures through AVT and OMA: A Review

System Identification of Heritage Structures through AVT and OMA: A Review

Operational Modal Analysis, Model Update and Fragility Curves Estimation, through Truncated Incremental Dynamic Analysis, of a Masonry Belfry

Dynamic characteristics and viscous dampers design for pile‐soil‐structure system

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