Seismic response and damage development analyses of an RC structural wall building using macro-element

Hemsas, Miloud; Elachachi, Sidi Mohammed; Breysse, Denys

doi:10.12989/sem.2014.51.3.447

Cited by 4 publications

(1 citation statement)

References 23 publications

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“…Although Non-Linear Time History Analysis (NLTHA) has proven to be the most appropriate and reliable approach used to estimate this capacity, it tends to be too expensive computationally and too complex conceptually whenever used by practicing engineers . For practical application, a simplified procedure that is currently privileged for inelastic analysis is the nonlinear static pushover analysis (NSP), which combines the advantage of explicit treatment of yielding and inelastic deformations with the simplicity of static loading patterns (Aksoylu et al, 2020;Fajfar, 2000;FEMA-440, 2005;Hemsas et al, 2014;Tarabia et al, 2022;Çoşgun et al, 2022). Nevertheless, NSPs rely on the assumption that the response of a structure is controlled only by the fundamental mode.…”

Section: Introductionmentioning

confidence: 99%

Seismic analysis of RC building frames with vertical mass and stiffness irregularities using adaptive pushover analysis

Benaied,

Hemsas,

Benanane

et al. 2023

RDLC

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Irregular multistory buildings constitute a large part of modern urban infrastructure due to architectural aesthetics and functional requirements. In contrast, their behavior during recent major earthquakes indicated that severe structural damage was observed due to non-uniform distributions of mass, stiffness and strength either in plan or in elevation. Notably, abrupt changes in these quantities between adjacent stories are always associated with changes in the structural system along the height of the building. The present study investigates the inelastic response of RC buildings with mass and stiffness irregularities subjected to earthquake action. Thus, the displacement-based adaptive pushover method is used. This latter is motivated by the application of a lateral displacement pattern obtained by combining different mode shapes and updated incrementally at each analysis step. For this purpose, a ten-story regular frame structure is chosen and modified by incorporating vertical irregularities in various forms in order to estimate and quantify essential parameters' responses. The results obtained are discussed under the following headings: base shear forces, roof displacement, inter-story drift and story-shear distribution. With respect to the vertical mass and stiffness irregularities, it was noticed that the seismic response is more significantly influenced by stiffness irregularities compared to mass irregularities, which were found to have a slight impact on the seismic behavior of the building. It is also established that the simple procedure allows the evaluation of design forces and displacements in a more rational manner, in accordance with the current state of knowledge and modern trends in building codes. The results conclude, however, that the irregular structure cannot meet the seismic design requirements and must be constructed to minimize seismic effects.

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