Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Hamid Afra"'
Autor:
Mounia Menoun Hadj Brahim, Hamid Afra
Publikováno v:
International Journal of Geotechnical Earthquake Engineering. 13:1-26
The aim of this study is to develop a method based on a theoretical background that can evaluate directly the response spectrum of a soil profile at the surface from a specified bedrock response spectrum. One-dimensional ground response analysis is m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2c1ccb39eb29f9f1d7ba96e8f5859e9
https://doi.org/10.4018/ijgee.310051
https://doi.org/10.4018/ijgee.310051
This research aims to study the effect of neglecting modal decoupling due to Rayleigh's lightly non-classical damping hypothesis when investigating the frequency response functions of the non-classically damped systems. Also, the present work examine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1be658029272190ac6dd71beb18c04a7
https://doi.org/10.21203/rs.3.rs-2199001/v1
https://doi.org/10.21203/rs.3.rs-2199001/v1
Autor:
Hamid Afra, Mounia Menoun Hadj Brahim
Publikováno v:
Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe5bb1c0d555a00529dd31f4abb52203
https://doi.org/10.7712/120121.8841.18527
https://doi.org/10.7712/120121.8841.18527
Publikováno v:
International Journal of Geotechnical Earthquake Engineering. 7:33-56
This paper is dedicated to the identification of parameters of soil stratums and earthen dams from accelerometer records by inverse analysis using three kinds of optimization algorithms. The first one is the Levenberg-Marquart (L-M) gradient-based me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a94271e47050f68fad205b3aeb6b62b5
https://doi.org/10.4018/ijgee.2016010103
https://doi.org/10.4018/ijgee.2016010103
Autor:
Farida Achour-Olivier, Hamid Afra
Publikováno v:
Periodica Polytechnica Civil Engineering. :413-420
Several different seismic active control algorithms have been proposed in the last decades, most of these studies are based on the applications of the traditional linear quadratic regulator control (LQR). This paper develops a new control algorithm f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23f5d4e0275f8d85b9447075efd2897a
https://doi.org/10.3311/ppci.8198
https://doi.org/10.3311/ppci.8198
Publikováno v:
International Journal of Geotechnical Earthquake Engineering. 4:34-52
On May 21st, 2003, the north Algeria was stricken by a 6.8 magnitude earthquake which was felt over a distance of 250 km from the epicenter, which is localized in Mediterranean Sea at 10 km from the coast. During this event, several ground accelerati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::040f0a6999b1ef4ac84f7be205e3569c
https://doi.org/10.4018/ijgee.2013070103
https://doi.org/10.4018/ijgee.2013070103
Publikováno v:
International Journal of Geotechnical Earthquake Engineering. 3:1-17
In this paper, a new approach for soil profile characterization is validated. The soil characteristics are calculated by fitting the theoretical amplification functions to those obtained experimentally. The identified characteristics have been observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::888737068c67c6edade500bf79237aea
https://doi.org/10.4018/jgee.2012010101
https://doi.org/10.4018/jgee.2012010101
An identification procedure of soil profile characteristics from two free field acclerometer records
Publikováno v:
Soil Dynamics and Earthquake Engineering. 25:431-438
In this paper, an analytical, numerical and experimental approach for identifying soil profile characteristics by using system identification and free field records, is presented. First, a theoretical soil amplification function for two sites is defi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4666b8e6d1a402d097b37cbed18ee661
https://doi.org/10.1016/j.soildyn.2005.04.001
https://doi.org/10.1016/j.soildyn.2005.04.001
Autor:
Hamid Afra, Safia Bedaoui
Publikováno v:
Revue Française de Génie Civil. 8:953-973
In this paper, the structural identification theory is used to derive and calibrate discrete and continuous models of a multi story steel building (Alta Bates hospital at Berkeley) and a concrete beams bridge (Boumerzoug, Constantine, Algeria). A dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::769ad904077ae865efa20dbe7b653bf3
https://doi.org/10.1080/12795119.2004.9692636
https://doi.org/10.1080/12795119.2004.9692636
Publikováno v:
Soil Dynamics and Earthquake Engineering. 23:331-348
This paper deals with the numerical simulation of heterogeneous soil profile and its behavior under uniform seismic environment. Soil properties of interest are shear modulus, fraction of critical damping and Poisson ratio, modeled as spatially rando
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fdf0fd8be0c45398e7ef3129ac737b7
https://doi.org/10.1016/s0267-7261(03)00036-8
https://doi.org/10.1016/s0267-7261(03)00036-8