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  | ARTICLES | Am. J. innov. res. appl. sci. Volume 10,  Issue 6, Pages 2115-221 (June 2020)
Research Article 2
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American Journal of innovative
Research & Applied Sciences 
ISSN  2429-5396 (Online)
OCLC Number: 920041286
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| JUNE | VOLUME 10 | N° 6 | 2020 |
| Info-AJIRAS-® Journal ISSN 2429-5396 (Online) / Reference  CIF/15/0289M |
  American Journal of Innovative Research & Applied Sciences
Authors Contact

*Correspondant author and authors Copyright © 2020:

| Daïrou Saïfoullah 1,2* | Alain Loabé Pahimi 1,2 | Arafat Gové 2 | and | Jacques Djida Housseini 2 |


Affiliation.

1. Ecole Normale Supérieur Polytechnique de Maroua (ENSPM) | B.P. 46 Maroua | Cameroun |
2. Institut de Recherche Agricole pour le Développement(IRAD) | BP 415 Garoua | Cameroun |


This article is made freely available as part of this journal's Open Access: ID | Daïrou-Ref.1-ajira280520 |
ABSTRACT

Background
: In the context of progressive collapse, robustness is broadly defined as a measure of the ability of a building system to carry most of its usual functions in the presence of local component failures. Specifically, structural robustness is a measure of the capacity of a building system to withstand loss of local load carrying capacity. Objectives: The objective of this study is to evaluating the robustness of building systems that have lost critical members By focusing on the residual capacity and associated collapse modes, particularly for seismically designed buildings. Methods: This paper presents a technique termed ‘pushdown analysis’ that can be used to investigate the robustness of building systems by computing residual capacity and establishing collapse modes of a damaged structure. The proposed method is inspired by the pushover method commonly used in earthquake engineering. Three variants of the technique, termed uniform pushdown, bay pushdown and incremental dynamic pushdown, are suggested and exercised using nonlinear analysis on 9-story steel moment frames designed for low and high levels of seismic risk. Conclusions: Simulation results show that the frame designed for high seismic risk is more robust than the corresponding one designed for moderate seismic risk. The improved performance is attributed to the influence of seismic detailing, specifically, the presence of reduced beam sections and stronger columns. It is shown that the dynamic impact factors associated with column removal are significantly lower than the commonly used value of 2.0 and are in line with lower values in the guidelines recently proposed by the US Department of Defense.
Keywords: Progressive collapse, column loss, Beam-to–column joints, Catenary action, Dynamic increased factor

Corresponding author Author: | Daïrou Saïfoullah *| & Copyright Author © 2020: | Khudr Yousef Alhaj |. All Rights Reserved. All articles published in American Journal of Innovative Research and Applied
Sciences are the property of Atlantic Center Research Sciences, and is protected by copyright laws CC-BY. See: http://creativecommons.org/licenses/by-nc/4.0/
VALORISATION DES DECHETS PLASTIQUES  DANS LA PRODUCTION DES  MATERIAUX DE CONSTRUCTION: ¶CAS DES PAVES DANS LA VILLE DE GAROUA (NORD-CAMEROUN)

VALORIZATION OF THE PLASTIC WASTES IN THE PRODUCTION OF BUILDING MATERIALS:¶ PAVING CASES IN THE GAROUA CITY (NORTH-CAMEROON)


|  Daïrou Saïfoullah 1,2* | Alain Loabé Pahimi 1,2 | Arafat Gové 2 | and | Jacques Djida Housseini 2 |.  Am. J. innov. res. appl. sci. 2020; 10(6):215-221.

    | PDF FULL TEXT |  | XML FILE |  | Received | March 19, 2020 | | Accepted | April 28, 2020 |  | Published | June 01, 2020 |