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187 results on '"Rots, Jan G."'

1. Exploring Bacteria-Based Self-healing Potential in Cement-Lime Mortar Masonry

Author

Gaggero, Maria B., Korswagen, Paul A., Esposito, Rita, Rots, Jan G., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Milani, Gabriele, editor, and Ghiassi, Bahman, editor

Published
2025
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2. Experimental Comparison of Cracking in Four Masonry Walls with Different Boundaries and Material

Author

Korswagen, Paul, Gaggero, M. Belen, Rots, Jan G., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Milani, Gabriele, editor, and Ghiassi, Bahman, editor

Published
2025
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3. Comparative Analysis of Coupled and Uncoupled 3D Finite Elements Models for Masonry Structures Subjected to Settlements

Author

Prosperi, Alfonso, Longo, Michele, Korswagen, Paul A., Korff, Mandy, Rots, Jan G., di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Milani, Gabriele, editor, and Ghiassi, Bahman, editor

Published
2025
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8. Influences of Element Types on Nonlinear Finite Element Analysis of a Concrete Column Under Near-Field Blast Loading

Author

Xu, Jie, Hendriks, Max A. N., Rots, Jan G., Tsouvalas, Apostolos, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Haddar, Mohamed, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Yadav, Sanjay, editor, Kumar, Harish, editor, Wan, Meher, editor, Arora, Pawan Kumar, editor, and Yusof, Yusri, editor

Published
2023
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16. Experimentally‐based in‐plane drift limits for the upper threshold of masonry light damage.

Author

Korswagen, Paul A., Rots, Jan G., and Terwel, Karel C.

Subjects
DIGITAL image correlation, GOAL (Psychology), WIND pressure, CRACK propagation, MACHINE learning
Abstract

Drift limits are useful thresholds; during design or retrofitting analyses, engineers can compare the expected behaviour of a structure to drift limits that predict when the structure will reach a certain condition. This helps ensure that structures satisfy specified performance goals when exposed to certain hazards. Masonry walls are susceptible to damage from lateral in‐plane actions such as wind or earthquake loading; ensuring that in‐plane drift remains sufficiently small will help limit this damage. Drift limits based on crack‐based damage are scarce, however, with DS1 limits being extrapolated from higher damage grades based on structural strength capacity or ductility. In this work, crack‐based damage is evaluated on a multitude of full‐scale experimental walls surveyed with digital image correlation. This method observes the initiation and propagation of cracking. Cyclically incremental in‐plane tests provide a range of drift‐damage relationships. These are explored with machine learning to determine influential predictors and ultimately establish drift limits for light damage. Two types of brick masonry are explored: fired‐clay and calcium‐silicate. For the latter, light damage begins at an in‐plane drift of 0.5 mm/m and can extend to 4.8 mm/m (or 0.48%) for the former before the masonry surpasses light damage and reaches structural damage grades. In comparison to drift limits set by other authors and (international) guidelines to characterise light damage, significant damage, or the ultimate capacity of masonry walls, the resulting drift limits for light damage from this work are set directly on the basis of experiments and are in good agreement with other authors. Most importantly, all the consulted values for ultimate capacity are much larger than the upper threshold for light damage determined herein, with limits for significant damage in the same order of magnitude. This result verifies the accuracy of the experimental crack‐based characterisation used to establish the drift thresholds. [ABSTRACT FROM AUTHOR]

Published
2025
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23. Computational Modelling of Concrete and Concrete Structures

Author

Meschke, Günther, Pichler, Bernhard, and Rots, Jan G.

Subjects
Structural engineering
Abstract

Computational Modelling of Concrete and Concrete Structures contains the contributions to the EURO-C 2022 conference (Vienna, Austria, 23-26 May 2022). The papers review and discuss research advancements and assess the applicability and robustness of methods and models for the analysis and design of concrete, fibre-reinforced and prestressed concrete structures, as well as masonry structures. Recent developments include methods of machine learning, novel discretisation methods, probabilistic models, and consideration of a growing number of micro-structural aspects in multi-scale and multi-physics settings. In addition, trends towards the material scale with new fibres and 3D printable concretes, and life-cycle oriented models for ageing and durability of existing and new concrete infrastructure are clearly visible. Overall computational robustness of numerical predictions and mathematical rigour have further increased, accompanied by careful model validation based on respective experimental programmes. The book will serve as an important reference for both academics and professionals, stimulating new research directions in the field of computational modelling of concrete and its application to the analysis of concrete structures. EURO-C 2022 is the eighth edition of the EURO-C conference series after Innsbruck 1994, Bad Gastein 1998, St. Johann im Pongau 2003, Mayrhofen 2006, Schladming 2010, St. Anton am Arlberg 2014, and Bad Hofgastein 2018. The overarching focus of the conferences is on computational methods and numerical models for the analysis of concrete and concrete structures.

Published
2022
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48. Modelling stability of reinforced concrete walls applying convex optimization

Author

Meschke, Günther, Pichler, Bernhard, Rots, Jan G., Vestergaard, D., Poulsen, P.N., Hoang, L.C., Larsen, K.P., Feddersen, B., Meschke, Günther, Pichler, Bernhard, Rots, Jan G., Vestergaard, D., Poulsen, P.N., Hoang, L.C., Larsen, K.P., and Feddersen, B.

Abstract

Due to time constraints on structural design processes, modelling and computational complexityis often a key concern in limit state analysis of reinforced concrete (RC) structures, causing practitioners tochoose efficient but inaccurate methods of analysis over more advanced ones. Recently, a framework usingconvex optimization for elasto-plastic, geometrically linear analysis of RC walls was proposed, enabling analysisof models with more than 10,000 finite elements within minutes on a standard PC. In order to improve theapplicability and relevance of the framework as a design tool, this paper proposes an extension that enablesthe determination of the critical buckling load. Based on the nonlinear solution obtained from the elasto-plasticoptimization problem, the cracked tangent stiffness of the RC sections is determined, and a linearized bucklingproblem is posed and solved as a linear eigenvalue problem. This allows the actual critical buckling load tobe determined by solving a sequence of optimization and eigenvalue problems. The accuracy of the proposedmethod is assessed, and its applicability to practical design scenarios is demonstrated by an analysis of an RCwall with a door hole, showing an average solution time of approximately 30 seconds per load step.

Published
2022

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