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On the role of topographic ampli fi cation in seismic slope instabilities

Journal of Rock Mechanics and Geotechnical Engineering 2015年第2期7卷 163-170页

作者： Fardin Jafarzadeh mohammad mahdi shahrabi Hadi Farahi Jahromi Civil Engineering Department Sharif University of Technology

Surface wave generation due to body wave propagation near ground surface has been discussed in the *** phenomenon,typically occurring in topographic changing areas,along with its interaction with body waves(SV),decreases precision of formulas for evaluation of slope *** signi fi cant fact caused the researchers not only to investigate the combined surface and SV waves motion pattern,but also to consider its effect on structures built on the *** order to reveal the phenomenon,several fi nite element numerical studies have been performed by ABAQUS ***,two physical model slopes simulating the landslide occurrence have been constructed and tested by shaking table *** results of induced and calculated accelerations obtained by two approaches have been compared and Rayleigh wave generation has been ***,the slope displacements have been calculated by various empirical methods and the results were compared with numerical *** results proved that in order to increase the precision of empirical formulas for displacement prediction,surface wave effect should be taken into ***,a concept of'effective depth of sur fi cial ampli fi cation'is introduced and its effect on dynamic slope stability is analysed.

关键词： Slope displacement Surface wave Numerical modelling Shaking table test Topographic amplification

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Thermo-hydro-mechanical modeling of fault discontinuities using zero-thickness interface element

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Journal of Rock Mechanics and Geotechnical Engineering 2020年第1期12卷 74-88页

作者： Ali Ranjbar Hossein Hassani Kourosh Shahriar mohammad Javad Ameri shahrabi Department of Petroleum Engineering Amirkabir University of TechnologyTehranIran Department of Mining and Metallurgy Engineering Amirkabir University of TechnologyTehranIran

In this paper,a coupled thermo-hydro-mechanical(THM)simulation in a faulted deformable porous medium is *** model involves solving the mass conservation,linear momentum balance,and energy balance equations which are derived from the Biot’s consolidation *** pore pressure,solid displacement,and temperature are chosen as initial variables in these equations,and the finite element method in combination with the interface element is used for spatial discretization of continuous and discontinuities(fault)parts of the medium to solve the *** main purpose of this study is providing precise formulations,applicability,and ability of the triple-node zero-thickness interface element in THM modeling of *** should be noted that the system of equations is solved using a computer code written in Matlab *** order to verify the developed method,simulations of index problems such as Mandel’s problem,and coupled modeling of a faulted porous medium and a faulted aquifer are *** modeling results obtained from the developed method show a very good agreement with those by other modeling methods,which indicates its accuracy.

关键词： Thermo-hydro-mechanical(THM) simulation Geomechanical coupling Zero-thickness element Joint element Finite element

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维普期刊数据库

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