https://asps-journals.com/index.php/jgg/issue/feed 2024-01-30T05:35:12+00:00 Prof. Ali Bouafia geotechlinks@gmail.com Open Journal Systems <p>The Journal of Geomechanics and Geoengineering (ISSN 2716-7992) is concerned by communicating recent and projected advances in the application of the principle of mechanics to earth-materials and covers many engineering disciplines such as foundation engineering, slope engineering, tunneling, rock engineering, engineering geology, geotechnical earthquake engineering and geo-environmental engineering.</p> https://asps-journals.com/index.php/jgg/article/view/444 2022-06-15T15:36:21+00:00 Hicham Charrak hichem.charrak@univ-tlemcen.dz Nadia Smail n_rouissat@yahoo.fr Bouchrit Rouissat b_rouissat@yahoo.fr Hamza Basri hamza.basri@univ-tlemcen.dz Almoutaz Bellah Alsamawi mezo.smawi@gmail.com

<p>Many factors, including soil permeability and mechanical properties, upstream side slope, drawdown ratio, and drawdown rate, influence the stability of an earth dam during sudden drawdown. This paper investigates the influence of rapid drawdown on earth dam upstream slope stability and its role in the change of pore water pressure at different locations and factor of safety of the upstream slope. To achieve the aim of this study, the Sidi Abdelli dam was taken as a case study by using the Geo-SLOPE/W program based on the limit equilibrium method. The results show that the pore water pressures are very low at the toe of the dam and then increase as the initiation of pore water dissipation from the dam and then decrease as the elevation, as well, the velocity vectors start to exit from the upstream side, the possible seepage face is on the upstream side. As well as, the factor of safety of the upstream slip surface decrease with the initiation of rapid drawdown, the upstream slope is no in a safe stability condition. But, after 13 days the factor of safety increases above value 1.00, that is means the upstream slope will be in a safe condition.</p>

2024-01-30T00:00:00+00:00 Copyright (c) 2024 Hicham Charrak, Nadia Smail, Bouchrit Rouissat, Hamza Basri, Almoutaz Bellah Alsamawi https://asps-journals.com/index.php/jgg/article/view/783 2024-01-10T09:29:27+00:00 Yacine Bakhtaoui yac_bak@yahoo.fr

<p>In the context of soil-structure interaction, often underestimated in design codes, accurate anticipation of dynamic amplification and foundation displacements has become increasingly crucial. Recent earthquakes like Mexico City (1985), Loma Prieta (1989), Port-au-Prince (2010), and Kumamoto (2016) highlighted the need for robust methods to analyze these complex nonlinearities. While both nonlinear and equivalent linear approaches offer valuable insights, limitations in computational efficiency and implementation can hinder their practical application. This paper addresses these challenges by presenting the formal development of a novel quasi-nonlinear method for real-time seismic response analysis, building upon the principles introduced by the author. This innovative approach, unlike traditional equivalent linear methods, dynamically calculates mean shear moduli and local secant stiffnesses, integrating them into a Newmark-based solution process. The paper further validates the method against the Santa Cruz earthquake (Loma Prieta 1989) on a sandy soil profile, demonstrating remarkable agreement with reference solutions obtained using established methods like Shake91 and Quad4m. This comprehensive formulation paves the way for accurate and efficient real-time reconstruction of seismic responses within a practical quasi-nonlinear framework.</p>

2024-02-26T00:00:00+00:00 Copyright (c) 2024 Yacine Bakhtaoui