ABDERRACHID Boulaouad
بولعواد عبدالرشيد
abderachid.boulaouad@univ-msila.dz
05 55 26 80 55
- CIVIL ENGINEERING
- Faculty of Technology
- Grade MCA
About Me
Location
Msila, Msila
Msila, ALGERIA
Code RFIDE- 1955-11-14 00:00:00
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ABDERRACHID Boulaouad birthday
- 2022
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2022
EFFECT OF SHEAR WALLS ON THE BEHAVIOR OF NON-LINEAR STRUCTURES IN SEISMIC ZONES
In some regions of the world subjected to frequent severe earthquakes, such as Algeria, attention is focused on seismic design in order to assure the public welfare. When, for many countries most of the building consists of constructions of “self-steady frames” type system. The last seismic events have shown the inefficiency of such a type of to avoid evident disaster. On the other hand, the use of shear walls as “Lateral Load Resisting System” (LLRS) seems to be a good alternative. This study tries to confirm the requirement of shear walls in seismic zones by highlighting their beneficial effect on structures subjected to strong motions. For this purpose, a comparison is made between the two types using both linear and nonlinear analysis with a focus on two parameters which are of great im-portance, the base shear and the lateral drift in particular. Applications are made on two types of Reinforced Concrete (RC) multistory structures: with shear walls (dual systems) and without (w/o) shear walls (self-steady structures). The results permit to emphasize the need of shear walls as LLRS in seismic zones and confirm the restrictions imposed by the Algerian code, amongst others, concern-ing the use of self-steady frames system for structures in such area.
Citation
Larbi BELAGRAA , Abderrachid BOULAOUAD , Ibrahim BERRA , , (2022), EFFECT OF SHEAR WALLS ON THE BEHAVIOR OF NON-LINEAR STRUCTURES IN SEISMIC ZONES, Mining Science, Vol:29, Issue:29, pages:29, 2022, 7–17, Mining Science
- 2022
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2022
Limit Analyses of the Active Earth Pressure on Rigid Retaining Walls under Strip Loading on Backfills
Recent studies of retaining walls include experimental studies, numerical analysis and analytical models. Although active earth pressure against retaining structures has received much attention, the evaluation of active earth pressure of backfill when loaded by a strip foundation, has been slightly studied. This paper studies the effect of a strip load on the active pressure force and the distribution of the horizontal stresses on a rigid wall, using a finite element limit analysis. The strip loading is located at different distances from the vertical face of the wall. The OptumG2 code is used to analyze the effect of width of strip surcharge (soil-wall), interface friction angle and soil internal friction angle. New interesting results are demonstrated and presented here: the dependency of the active earth pressure coefficient on both position and width of the strip load, in one hand, and the effect of the internal friction angle of the soil, the soil-wall interface, and the position of the strip loading on the failure mechanism, in the other hand.
Citation
Naoui TALLAH , Abderrachid BOULAOUAD , , (2022), Limit Analyses of the Active Earth Pressure on Rigid Retaining Walls under Strip Loading on Backfills, Annales de Chimie - Science des Matériaux, Vol:16, Issue:3, pages:27-35, Lavoisier
- 2020
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2020
Experimental Investigation on the Properties of a Recycled Aggregate Concrete Based on Waste of the Industrial Mineral Additions
This study investigates the possible effects of incorporating different industry wastes during manufacturing of concrete, with percentages ranging from 0% to 30%, and assesses the influence of these combinations (mineral additions and recycled aggregates) on the properties of a recycled concrete comprised of these two main constituents products. Recycled concrete samples with different combinations of mineral additions at various dosages were used to determine these properties in the fresh and hardened states. The ”Design-expert” methodology was used to analyse the results after 7, 14 and 28 days, identifying correlations and the effects of the different variables. The results obtained showed the advantageous effect of incorporating the pozzolana and slag into the concrete mixture at dosages of 15% and 30%, they also demonstrated the low optimal percentage of marble fillers of 5%. These findings suggest that replacing clinker with industrial waste could limit the dust and CO2 emissions into the atmosphere during concrete manufacture, offering environmental advantages as well as conserving the natural resources of aggregate recovery from C&D wastes. Keywords: environmental concrete, mineral additions, recycled aggregate, design expert method
Citation
Larbi BELAGRAA , Abderrachid BOULAOUAD , KESSAL Oussama, NOUI Ammar, MECHERI Med Cherif, BOUZID Abderrazak, ,(2020), Experimental Investigation on the Properties of a Recycled Aggregate Concrete Based on Waste of the Industrial Mineral Additions,RICON19 REMINE International Conference on Valorization of Mining and Industrial Wastes into Construction Materials By Alkali-activation,Covilha, UBI Portugal
- 2010
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2010
Review of the Algerian seismic design code spectrum
The specific "seismic design spectrum" proposed by the Algerian seismic design code, namely the "normalized acceleration spectrum", seems to present an anomaly in comparison with other seismic design spectra over the world and with computed spectra, especially in the first branch of the curve, corresponding to the range of short periods, where the spectrum is a decreasing line whereas it must be an increasing one. This anomaly is outlined and confirmed, in one hand, and treated by proposing an appropriate formula instead of the available one, in the other hand. Some numerical applications are made using both available and proposed formula. This work may be considered as a contribution to the revision of the Algerian seismic design code which is continually done in order to make it more realistic and more perfect. Key words: Algerian seismic design code, response spectrum, seismic force.
Citation
Abderrachid BOULAOUAD , Amar HAMITOUCHE , , (2010), Review of the Algerian seismic design code spectrum, Journal of Civil Engineering and Construction Technology, Vol:1, Issue:, pages:19-26, Academic Journals