Structural safety assessment of geometrically complex masonry vaults by non-linear analysis. The Chapel of the Würzburg Residence (Germany)

Compán, Víctor; Pachón, Pablo; Cámara, Margarita; Lourénço, Paulo B.; Sáez, Andrés

doi:10.1016/j.engstruct.2017.03.002

Cited by 40 publications

(16 citation statements)

References 18 publications

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“…The experimental study is conducted based on the limestone masonry samples of Veríssimo-Anacleto et al [40], who proposed a stone masonry compression strength of 7.5 MPa, which is adopted in the present study. The tensile material strengths f t are assumed to be 1/10 [41] of the compression strengths f c suggested by previous research. The feasible values of fracture energy G f are obtained by multiplying the tensile strengths by the ductility index G f /f t = 0.064 mm proposed by Compán et al [41] for stone masonry.…”

Section: Constitutive Materials Modelmentioning

confidence: 99%

Seismic vulnerability assessment and fragility curves for a multistorey gallery arch bridge

Shimpi¹,

Sivasubramanian²,

Singh

et al. 2021

SN Appl. Sci.

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The masonry bridges on the Kalka Shimla Mountain Railway line, which have multiple arch galleries in the form of Roman aqueducts, are spectacular. The Kalka Shimla Mountain Railway line is situated in severe seismic zones (Indian Standard 1893:2016). This research assesses the seismic vulnerability of masonry arch Bridge No. 541 situated on the Kalka Shimla Mountain Railway line. This bridge is the tallest on the route. In particular, it assesses the seismic vulnerability of the bridge using finite element (FE) analysis. For this purpose, an FE model for the bridge is developed using the ABAQUS FE-based environment. The experimental field study conducted on the bridge using an ambient vibration test (AVT) and dynamic parameters (frequency and mode shapes) is evaluated by operational modal analysis (OMA). Further, the FE model is updated by modifying the elastic mechanical property of the stone masonry to match the analytical modal frequency with the results of the AVT and OMA. The updated model is then used to perform a pushover analysis and nonlinear dynamic analysis to estimate the seismic performance of the bridge. Furthermore, fragility curves are developed for the bridge to estimate the damage state for specific seismicity. The study shows that the bridge is vulnerable to Zone IV seismicity and needs some retrofitting in specific locations such as the pier–abutment joints.

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Section: Constitutive Materials Modelmentioning

confidence: 99%

Seismic vulnerability assessment and fragility curves for a multistorey gallery arch bridge

Shimpi¹,

Sivasubramanian²,

Singh

et al. 2021

SN Appl. Sci.

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“…If the natural frequency of structure matches the frequency of earthquake, the building may continue to resonate resulting in large structural damages. Compan et al [11] addressed the structural safety of a masonry world heritage building in Germany using a FE model. Authors have also performed the modal analysis using ABAQUS software.…”

Section: Seismic Analysismentioning

confidence: 99%

Homogenous Finite Element Modelling and Seismic Analysis of A Massive Unreinforced Masonry Heritage Building and Its Proposed Rehabilitation

Shamim*,

Ahmad,

Khan

2020

IJRTE

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An Unreinforced Masonry Heritage school building situated at Aligarh Muslim University, Aligarh has been investigated for possible seismic failures using SAP2000 Finite Element Software. The school building being a massive and complex structure has been modelled using homogenous modelling approach. The material was considered to be homogenous and isotropic. The natural frequencies and mode shapes were computed using modal analysis. The building was then subjected to seismic ground motions in both X and Y directions to determine its seismic performance. The results showed that the building was safe under gravity loading but some weak zones were found under earthquake loading. In order to conquer the exceeding stresses a rehabilitation study has also been performed to see its effectiveness on the Heritage school building model which proved to be satisfactory

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“…Application of FE model updating to ancient masonry buildings is relatively recent. In [4,5,12,13,15,20,22,24,27,33,37,38,43] a vibration-based model updating is conducted, and preliminary FE models are tuned by using the dynamic characteristics determined through system identification techniques. In the papers cited above the modal analysis of the FE models are conducted via commercial codes, and the model updating procedure is implemented separately.…”

Section: Introductionmentioning

confidence: 99%

“…Although the formulas for ∇φ(x) and ∇φ R (x) are not reported explicitly in Lemma 4.7, they are directly implementable in view of Equation(15), and require almost no computational effort when the eigenvectors are obtained through the Lanczos process.…”

mentioning

confidence: 99%

Finite element model updating for structural applications

Girardi

Padovani

Pellegrini

et al. 2020

Journal of Computational and Applied Mathematics

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A novel method for performing model updating on finite element models is presented. The approach is particularly tailored to modal analyses of buildings, by which the lowest frequencies, obtained by using sensors and system identification approaches, need to be matched to the numerical ones predicted by the model. This is done by optimizing some unknown material parameters (such as mass density and Young's modulus) of the materials and/or the boundary conditions, which are often known only approximately. In particular, this is the case when considering historical buildings.The straightforward application of a general-purpose optimizer can be impractical, given the large size of the model involved. In the paper, we show that, by slightly modifying the projection scheme used to compute the eigenvalues at the lowest end of the spectrum one can obtain local parametric reduced order models that, embedded in a trust-region scheme, form the basis for a reliable and efficient specialized algorithm.We describe an optimization strategy based on this approach, and we provide numerical experiments that confirm its effectiveness and accuracy.

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Structural safety assessment of geometrically complex masonry vaults by non-linear analysis. The Chapel of the Würzburg Residence (Germany)

Cited by 40 publications

References 18 publications

Seismic vulnerability assessment and fragility curves for a multistorey gallery arch bridge

Seismic vulnerability assessment and fragility curves for a multistorey gallery arch bridge

Homogenous Finite Element Modelling and Seismic Analysis of A Massive Unreinforced Masonry Heritage Building and Its Proposed Rehabilitation

Finite element model updating for structural applications

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