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作者:Masoud Ranjbarnia , Nima Rahimpour , Pierpaolo Oreste
来源:[J].Tunnelling and Underground Space Technology incorporating Trenchless Technology Research(IF 1.106), 2018, Vol.82, pp.39-49
摘要:Abstract(#br)In this study, a simple analytical method is presented to investigate the behavior of arch umbrella supporting system (the forepolling system) in deep tunnels. For this purpose, a qualitative distribution of the load on the arch umbrella elements (the beams) is propo...
作者:... Masoud Samaei , Masoud Ranjbarnia , Vahid Nourani
来源:[J].Measurement(IF 1.13), 2018, Vol.126, pp.46-57
摘要:Abstract(#br)Hard rock TBM performance prediction is of great interest to the tunneling community on account of its importance in time and cost risk management of underground projects. Continuous development of new empirical models in recent decades reveals the importance of...
作者:Masoud Ranjbarnia , Vahid Nourani
来源:[J].Measurement(IF 1.13), 2019
摘要:Abstract(#br)The aim of present study is to propose new superior equations and introduce novel techniques for TBM performance prediction. To this end, correlations between the Rate of Penetration (ROP) and rock mass properties are investigated using four simple regression analyse...
作者:Ahmad Fahimifar , Masoud Ranjbarnia
来源:[J].Tunnelling and Underground Space Technology incorporating Trenchless Technology Research(IF 1.106), 2008, Vol.24 (4), pp.363-375
摘要:Abstract(#br)Assuming that grouted rockbolts increase internal pressure within a broken rock mass, a new procedure for computation of ground response curves for a tunnel reinforced with active grouted rockbolts is presented, while the effect of distance of bolted section to tunne...
作者:Masoud Ranjbarnia , Ahmad Fahimifar , Pierpaolo Oreste
来源:[J].Archives of Mining Sciences, 2016, Vol.61 (4), pp.823-852
摘要:Abstract In this paper, two new analytical approaches are presented on the basis of convergence-confinement method to compute both the ultimate convergence of circular tunnel and its plastic zone having been reinforced by systematically pre-tensioned fully grouted rockbolts. The ...
作者:Masoud Ranjbarnia , Pierpaolo Oreste ...
来源:[J].International Journal for Numerical and Analytical Methods in Geomechanics(IF 1.055), 2016, Vol.40 (13), pp.1844-1862
摘要:Summary(#br)This paper presents an analytical‐numerical approach to obtain the distribution of stresses and deformations around a reinforced tunnel. The increase in the radial stress of the reinforced tunnel, based on the performance of a bolt, is modeled by a function, whic...
作者:Masoud Ranjbarnia , Ahmad Fahimifar , Pierpaolo Oreste
来源:[J].International Journal of Geomechanics, 2015
摘要:AbstractThis study develops an analytical approach to quantitatively model the efficiency of the pretensioning of grouted rockbolts in terms of reduction of tunnel convergence. In this study, the distribution of force along the pretensioned fully grouted bolt is calculated b...
作者:Masoud Ranjbarnia , Daniel Dias
来源:[J].Transportation Geotechnics, 2020, Vol.23
摘要:Abstract(#br)In this paper, three-dimensional numerical modeling is performed to study the effects of strike-slip fault movement on the performance of shotcrete and segmental linings in shallow tunnels that transversely cross the fault. For this purpose, a parametric study is con...
作者:Masoud Ranjbarnia , Ahmad Fahimifar , Pierpaolo Oreste
来源:[J].Proceedings of the Institution of Civil Engineers - Geotechnical Engineering(IF 0.569), 2015, Vol.168 (1), pp.16-30
摘要:This paper studies the influence of non-linear stress–strain of post-failure on the ground response curve of a circular tunnel excavated in rock mass. Thus, the influence of variations of both the quality of rock mass and the confining stress around the tunnel due to the adv...

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