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Item type:Publication, Numerical modelling of adobe structures(Springer Nature, 2021-01-01)Numerical assessment of adobe structures allow several drawbacks of experimental testing to be overcome, either to carry out back-analyses or to predict the seismic performance of real constructions. Among a number of modelling strategies, this chapter presents the main features of the finite element method, discrete element method and equivalent frame method, discussing their implementation in the case of adobe constructions. Pros and cons of each modelling approach are identified in view of real-world applications. Recent developments are discussed and research needs are detected for future studies. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Research developments and needs on seismic performance and strengthening of adobe masonry constructions(Springer Nature, 2021-01-01)The significant amount of studies on adobe masonry constructions, which have received growing interest from researchers and practitioners, allows preliminary conclusions on the state-of-the-art to be drawn. Besides, several research needs can be delineated to create the basis for knowledge development and implementation of seismic risk mitigation programmes. Past studies moved from material characterization to structural performance assessment through numerical simulation and experimental testing, as well as seismic strengthening. Future lines of research could focus on test standardisation, non-destructive and minor-destructive testing, full-scale testing to support structural modelling and strengthening, and numerical simulation through discrete element and equivalent frame methods. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Efficient beam-based model for reinforced concrete walls considering shear-flexure interaction(Elsevier Ltd, 2024-09-15)This paper presents an efficient beam-based modelling scheme for the seismic analysis of reinforced concrete structural walls. The model combines a force-based beam element with a fibre section for flexural response and a zero-length element for shear response. The fibre-based element simulates the nonlinear flexural behaviour through uniaxial material laws that account for concrete cracking, concrete crushing, and yielding and rupture of reinforcing bars. The zero-length element represents the shear behaviour with a trilinear lateral force-displacement curve representing, in a phenomenological way, nonlinear deformations caused by diagonal cracking. The reduction of shear resistance caused by inelastic flexural deformations is accounted for in the model to reproduce failures due to shear-flexure interaction. The model has been validated using data from 52 tests on wall specimens exhibiting flexure, shear and mixed shear-flexure modes from experimental campaigns reported in the literature, showing good accuracy in predicting the effective stiffness, maximum strength and displacement capacities obtained in the tests. Model results for ultimate displacement capacity correlate better with experimental results than simplified code-oriented expressions in performance-based evaluation standards and recommendations. Considering its balanced accuracy and computational efficiency, it is concluded that the proposed modelling scheme can effectively be used for performance-based seismic design and assessment of RC wall buildings.