Stability analysis of leaning historic masonry structures

D’Altri, Antonio Maria; Miranda, Stefano de; Castellazzi, Giovanni; Sarhosis, Vasilis

doi:10.1016/j.autcon.2018.04.003

Cited by 44 publications

(26 citation statements)

References 55 publications

(81 reference statements)

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“…Limit analysis has been mainly used for developing numerical tools in engineering, requiring the use of numerical strategies for discretization and mathematical programming. The numerical procedures derived using the finite element method are mature 13‐15 . To confirm whether the internal stresses are admissible in each solid element or the flow rules are satisfied, the appropriate shapes of elements and the interpolations of the stress and target yield criterion are utilized.…”

Section: Introductionmentioning

confidence: 99%

Retracted: Stability analysis of blocky structure system using discontinuity layout optimization

Cui

Huang

Wang

2020

Numerical Meth Engineering

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The collapse mechanism identification and limit load calculation of block composite structures are essential tasks in practical engineering. In this work, the discontinuity layout optimization (DLO) is utilized to simulate a stable blocky system structure under static and pseudostatic loading by considering soil–structure interaction effects. The program refers to the discretization of the system under consideration by utilizing the potential slip lines to connect nodes. Then, linear programming is applied to identify the critical layout. The DLO procedure is extended to mimic rotations in the approximate simulation of rotational and translational failures along boundaries, thus simulating the mechanism on the rotating block. The simulated failure mechanism and collapse load are consistent with the experimental observations and numerical modeling results. Furthermore, the procedure is applied to two potential practical applications: the stability analysis of a jointed rock slope and concrete masonry retaining wall. The results show that the DLO is a simple but scientific method for identifying the mechanism of the critical failure of blocky structures.

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Section: Introductionmentioning

confidence: 99%

Retracted: Stability analysis of blocky structure system using discontinuity layout optimization

Cui

Huang

Wang

2020

Numerical Meth Engineering

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“…In this study, the proposed method was tested on a cultural heritage with the aim of structural analysis. This was an initial concept for other studies in which Castellazzi et al [153], Korumaz et al [154], and D'Altri et al [155] presented a semi-automated strategy that enables the transformation of data point into finite element mesh with the aim of health assessment of historical structures. In another research, Conde-Carnero et al [156] proposed another automated approach for direct conversion of data points into a suitable finite element model with regard to structural analysis.…”

Section: Geometric Modellingmentioning

confidence: 99%

A Decade of Modern Bridge Monitoring Using Terrestrial Laser Scanning: Review and Future Directions

et al. 2020

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Over the last decade, particular interest in using state-of-the-art emerging technologies for inspection, assessment, and management of civil infrastructures has remarkably increased. Advanced technologies, such as laser scanners, have become a suitable alternative for labor intensive, expensive, and unsafe traditional inspection and maintenance methods, which encourage the increasing use of this technology in construction industry, especially in bridges. This paper aims to provide a thorough mixed scientometric and state-of-the-art review on the application of terrestrial laser scanners (TLS) in bridge engineering and explore investigations and recommendations of researchers in this area. Following the review, more than 1500 research publications were collected, investigated and analyzed through a two-fold literature search published within the last decade from 2010 to 2020. Research trends, consisting of dominated sub-fields, co-occurrence of keywords, network of researchers and their institutions, along with the interaction of research networks, were quantitatively analyzed. Moreover, based on the collected papers, application of TLS in bridge engineering and asset management was reviewed according to four categories including (1) generation of 3D model, (2) quality inspection, (3) structural assessment, and (4) bridge information modeling (BrIM). Finally, the paper identifies the current research gaps, future directions obtained from the quantitative analysis, and in-depth discussions of the collected papers in this area.

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“…In [50] the authors introduce an automatic method which is similar to the method in [47,48] but performs better. The mesh model transformed from point clouds is constructed by four-node tetrahedral elements.…”

Section: Finite Element Analysis Model With High Accuracymentioning

confidence: 99%

Finite Element Analysis based on A Parametric Model by Approximating Point Clouds

Neumann

2020

Remote Sensing

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Simplified models are widely applied in finite element computations regarding mechanical and structural problems. However, the simplified model sometimes causes many deviations in the finite element analysis (FEA) of structures, especially in the non-designed structures which have undergone unknowable deformation features. Hence, a novel FEA methodology based on the parametric model by approximating three-dimensional (3D) feature data is proposed to solve this problem in the present manuscript. Many significant and effective technologies have been developed to detect 3D feature information accurately, e.g., terrestrial laser scanning (TLS), digital photogrammetry, and radar technology. In this manuscript, the parametric FEA model combines 3D point clouds from TLS and the parametric surface approximation method to generate 3D surfaces and models accurately. TLS is a popular measurement method for reliable 3D point clouds acquisition and monitoring deformations of structures with high accuracy and precision. The B-spline method is applied to approximate the measured point clouds data automatically and generate a parametric description of the structure accurately. The final target is to reduce the effects of the model description and deviations of the FEA. Both static and dynamic computations regarding a composite structure are carried out by comparing the parametric and general simplified models. The comparison of the deformation and equivalent stress of future behaviors are reflected by different models. Results indicate that the parametric model based on the TLS data is superior in the finite element computation. Therefore, it is of great significance to apply the parametric model in the FEA to compute and predict the future behavior of the structures with unknowable deformations in engineering accurately.

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Stability analysis of leaning historic masonry structures

Cited by 44 publications

References 55 publications

Retracted: Stability analysis of blocky structure system using discontinuity layout optimization

Retracted: Stability analysis of blocky structure system using discontinuity layout optimization

A Decade of Modern Bridge Monitoring Using Terrestrial Laser Scanning: Review and Future Directions

Finite Element Analysis based on A Parametric Model by Approximating Point Clouds

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