MATEC Web Conf.
Volume 371, 2022International E-Conference on Mechanics, Mechatronics, Materials and Civil Engineering (3MCE’2022)
|Number of page(s)||5|
|Published online||30 November 2022|
Seismic analysis of reinforced concrete building accounting for local uplift, large rotation of the base and soil plasticity
Department of Physics, Faculty of Science and Technology, Tangier, Morocco
2 Systems, Control and Decision Laboratory, School of New Sciences and Engineering, Tangier, Morocco
* Corresponding author: firstname.lastname@example.org
This study provides an analysis of multistory reinforced concrete residential buildings to earthquakes considering local uplift of foundation, soil behaviour, site category and seismicity of area as suggested by the Moroccan seismic regulation. The superstructure was modeled as a flexible column with lumped mass placed at the top of the column under the hypothesis of large rotations or small rotations. The governing equations of the coupled system were obtained by expressing momentum conservation principle and were solved by means of adequate time integration numerical scheme. Then, the maximum seismic response of the coupled system was determined under El Centro ground motion for various configurations of the coupled mat-foundation system: elastic or elastic-perfectly plastic, as well as soil class and seismic magnitude. It was found that the nonlinear seismic demand of a reinforced concrete building, in terms of maximum values of horizontal and vertical displacements and rotation, depends considerably on the assumption regarding rotation magnitude. It is governed also by the height of the structure and the soil stiffness.
© The Authors, published by EDP Sciences, 2022
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