Alan showkati

Alan showkati. Geology, Engineering. 5. Save. The modified cam clay model is employed as the constitutive relationship of the soil in the numerical simulation. Hossein does research in Structural Engineering. The dynamic governing equation is expressed as finite difference format and programmed by using MATLAB language. islamic azad university. He is the founder of virascience. The design of rock anchors is based on four principal failure modes, which are breakage of the steel tendon, tendon-grout interface failure, grout-rock interface failure and rock mass failure around the anchor. Journal of Mining Engineering , 18, 59, 2023, 75-85. 2016; A new analytical approach for the analysis of stress around a post-tensioned anchor in rock with Aug 21, 2023 · In this paper, Hoek–Brown (HB) failure criterion in combination with kinematic approach of limit analysis is employed to develop an upper bound solution to the factor of safety (FoS) of an anchor-reinforced rock slope. A thorough review has been carried out by Aug 21, 2023 · In this paper, Hoek–Brown (HB) failure criterion in combination with kinematic approach of limit analysis is employed to develop an upper bound solution to the factor of safety (FoS) of an anchor-reinforced rock slope. ijrmms. ir صفحه نخست تحصیلات عناوین دروس فعالیت‌های پژوهشی علایق پژوهشی انجمن‌های علمی گالری تصاویر Jun 5, 2021 · Alan Showkati, Mansour Sharafisafa Infinite Rock Slope Analysis with Hoek–Brown Failure Criterion Rock Mechanics and Rock Engineering (IF 6. Arkin (1906–1980) (co-writer of the hit Three Dog Night song "Black and White"), and his wife, Beatrice (née Wortis) (1909–1991), a teacher. Jimenez. org/10. Failure of rock anchors could threaten the stability and lead to severe economic and social consequences. See the complete profile on LinkedIn and discover Alan’s connections and jobs at similar companies. 037 Corpus ID: 109542131; Compressive and adhesive strengths of shotcrete deteriorated by hazardous components in the groundwater @article{Kim2006CompressiveAA, title={Compressive and adhesive strengths of shotcrete deteriorated by hazardous components in the groundwater}, author={Dong-Gyou Kim and Gyu-Phil Lee and Gyu Jin Bae}, journal={Tunnelling and Underground Experienced Professor with a demonstrated history of working in the higher education industry. The nonlinear Hoek–Brown…. · Experience: Urmia University · Location: Iran Alan Showkati ( a. A. As such abrupt changes are not reasonable and do not reflect reality in the field, an alternative approach based on the limit equilibrium Apr 8, 2022 · To evaluate the stability of a prestressed railway embankment (PRE), approximate solutions for the additional normal and shear stresses on an arbitrary potential sliding surface of a PRE are first derived using the elastic theory, by which the propagation effect of additional stresses due to the prestressing loads is appropriately considered. The following assumptions are made: (1) homogeneous alan showkati; One distinctive feature of tunnels is the direct interaction between the primary support and the surrounding rocks. doi: 10. Meanwhile, the nonlinear Mohr–Coulomb (M–C) strength criterion has been Rock anchors are used to stabilise large scale infrastructures. Mar 2023 - Present 1 year 3 months. Journal of Central South University. 2 ) Pub Date: 2023-06-27 , DOI: 10. The portion of the study described in this paper focuses on concentric anchorage zones. Coupled hydro-mechanical response of saturated asphalt pavement under moving traffic load. 1971797. 22034/ijme. Oct 1, 2021 · Prestressed lining with unbonded annular anchors is a new type of lining used in hydraulic pressure tunnels. It is found that under seismic loading, the dynamic response of anchorage system Mar 7, 2024 · پست الکترونیکی: a. Sep 29, 2021 · Alan Jackson has gone public with an illness he says has been affecting him for years. For this reason, loads applied to tunnels may vary significantly Jun 1, 2009 · Alan Showkati P. Sep 1, 2014 · Semantic Scholar extracted view of "Debonding along the fixed anchor length of a ground anchorage" by A. O. sharafisafa@sydney. compgeo. Article 103670 View PDF. Vol. 1007/s00603-023-03431-y Oct 1, 2005 · The conventional methods of slices are commonly used for the analysis of slope stability. Results from the numerical Apr 12, 2015 · Alan Showkati; Parviz Maarefvand; Hossein Hassani; OriginalPaper 12 April 2015 Pages: 1463 - 1476 Lateral displacement of silty clay under cement-fly ash-gravel pile Alan Showkati *, Bahman Ahmadi, Kiarash Nasri Journal of Mining Engineering, Volume:18 Issue: 59, 2023, PP 75 -85 Abstract View Paper Research/Original Article Original: Persian Dec 1, 2008 · Alan Showkati P. According to the practical working conditions, a 3D non-linear finite element procedure is used to simulate a deep excavation supported by the composite soil nailed wall with bored piles in soft soil. Haas}, journal={International Journal of Rock Mechanics and Mining Sciences \& Geomechanics Abstracts}, year={1976}, volume={13}, pages={17-24}, url The authors of this paper present the results of a combination experimental and analytical study that explored the use of the strut-and-tie model for analyzing post-tensioned anchorage zones. 441 Corpus ID: 140562650; Theoretical determination of stress around a tensioned grouted anchor in rock @article{Showkati2015TheoreticalDO, title={Theoretical determination of stress around a tensioned grouted anchor in rock}, author={Alan Showkati and Parviz Maarefvand and Hossein Hassani}, journal={Geomechanics and Engineering}, year={2015}, volume={8}, pages={441 Alan Showkati’s Post Alan Showkati 2d Report this post Highly recommended book for practitioners👌 . After discussing existing work done on different aspects of long-term tunnel behaviour, the aim of this paper is to “understand” the influence of rock mass and lining degradations on the long-term stability conditions of the tunnel by means of the convergence–confinement The slope stability has already become one of the most important factors directly related to the safety production and development of a mine, which is principally controlled by the properties of geological discontinuities of slope, such as bedding planes, faults, cleavage and joints. In this study, a new approach for the evaluation of slope stability in large open-pit mines was presented based Jul 28, 2015 · Request PDF | On Jul 28, 2015, Alan Morris published A Practical Introduction to In-Depth Interviewing | Find, read and cite all the research you need on ResearchGate Social Media Marketing. Urmia university structural lab is consist of Dr. This paper presents a set of stability charts for the stability assessment of rock slopes that satisfy the Hoek–Brown (HB) criterion under various seismic loading conditions. 104217 Corpus ID: 212881583; Stability assessment of slopes in rock governed by the Hoek-Brown strength criterion @article{Michalowski2020StabilityAO, title={Stability assessment of slopes in rock governed by the Hoek-Brown strength criterion}, author={Radoslaw L. In this study, a new stability analysis model for wet-dry (W-D) sensitive rocks surrounding underground excavations is presented. I designed the branding for my collectibles company Decobot. The collapse of the tunnel face could occur if the support pressure is lower than a limit value called the “critical” or “collapse” pressure. First, the key points of numerical modeling are analyzed based on the stress characteristics of the lining. Article preview. Antonio Bobet Rock Mechanics and Tunneling Oct 27, 2020 · On the one hand, some locations through or near an aquifer will be in a drenching environment for months or years during the life cycle of a roadway (Showkati et al. Hassani. Hossein Showkati as head of lab and his students as members of lab, who are investigating the stability issues especially buckling Oct 23, 2010 · Showkati, Alan, and Hossein Salari-Rad. Alan Showkati P. Expand. DOI: 10. Engineering, Geology. 2023. The bearing plate effects are also considered in the analyses. Game Design Alan Showkati; Mansour Sharafisafa; In this paper, Hoek–Brown (HB) failure criterion in combination with kinematic approach of limit analysis is employed to develop an upper bound solution to Dec 10, 2012 · An approach based on the category of upper bound theorem of limit analysis is proposed in this article to consider the reinforcing effect of one row of anchors on slope stabilization. Mohammad Yekrangnia Associate Professor, Shahid Rajaee Teacher Training University. Semantic Scholar extracted view of "Analysis Of Long-Term Environmental Effects On The Durable Design Of Reinforced Concrete Lining Of Tunnels" by Alan Showkati et al. 2020. 8. :(0123456789)1 3 Environmental Earth Sciences (2023) 82:416 https://doi. [citation needed] The family lived in Crown Heights. 1016/0148-9062(76)90223-0 Corpus ID: 111119749; Installation induced stresses for grouted roof bolts @article{Nitzsche1976InstallationIS, title={Installation induced stresses for grouted roof bolts}, author={Ray N. , P. [PDF] 3 Excerpts. As a result of occurring molecular diffusion, the diffusion coefficient of sulfate ion has Alan Showkati ، Parviz Maarefvand ، Hossein Hassani چکیده A new analytical study on stresses around a post-tensioned anchor in rocks with two perpendicular joint sets is presented. The effect of anchor reinforcement is assumed to be an external axial force applied on the slope, and in the alan showkati; One distinctive feature of tunnels is the direct interaction between the primary support and the surrounding rocks. 103222 Corpus ID: 203043028; An analytical model for estimating the force and displacement of fully grouted rock bolts @article{Zhang2020AnAM, title={An analytical model for estimating the force and displacement of fully grouted rock bolts}, author={Weili Zhang and Lei Huang and Charng Hsein Juang}, journal={Computers and Geotechnics}, year={2020}, volume={117 SummaryThe effect of long term rock deformation on lining pressure is considered using different concepts of rock behaviour. Theoretical determination of stress around a tensioned grouted anchor in rock Alan Showkati, Parviz Maarefvand, Hossein Hassani (2015) Jan 1, 2021 · The assessment of long-term stability of rocks surrounding a tunnel considering rock weathering is a challenging topic in tunnel engineering. Ritchson had a starring role in the Spike TV sitcom Blue Mountain State (2010–2012), a role Sep 25, 2016 · Alan Showkati P. Senent G. Oct 21, 2020 · View Alan Showkati’s profile on LinkedIn, the world’s largest professional community. World Applied Sciences Journal, 15(11): 1494-1502, 2011. For this reason, loads applied to tunnels may vary significantly Mohebkhah, H. One of the most important functions of the final lining is its Based on some assumptions, the dynamic analysis model of anchorage system is established. Abstract—Sulfate attack is one of the most damaging degradation mechanisms that can be accelerated by the increase of the internal stress due to filling the void within concrete with chemical products of gypsum and ettringite and subsequent expansion causes spalling and exfoliation of the concrete. 1016/J. Mar 1, 2020 · Alan Showkati P. " Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, New Delhi, India, October 2010. 2017. The shear strength reduction method is adopted to define FoS using an approach based on the parametric form of the HB shear envelope. 2016; A new analytical approach for the analysis of stress around a post-tensioned anchor in rock with Nov 4, 1993 · An analytical solution for stresses induced by a post-tensioned anchor in rocks containing two perpendicular joint sets. Decobot products include Destined Legends™ and Sugar & Spice™. Follow. showkati [at] uok. 1007/s12665-023-11125-5 ORIGINAL ARTICLE Stabilization of rock slopes by anchor Mar 1, 2020 · DOI: 10. 2016; A new analytical approach for the analysis of stress around a post-tensioned anchor in rock with These are some of the different in-game and promotional assets I created, including the main packaging for the game. In an interview with Jenna Bush Hager of “Today,” the country star shared that he has suffered for years Alan Wolf Arkin was born in Brooklyn, a borough of New York City, on March 26, 1934, the son of teacher, painter, writer and lyricist David I. Based on assumptions of stresses on a slip surface, this work proposes a new limit equilibrium (LE) method to analyse the stability of slopes reinforced with anchor cables. Akisanya et al. , A. The solution has been derived for Alan Showkati; Parviz Maarefvand; Hossein Hassani; A new analytical approach for the analysis of stress around a post-tensioned anchor in rock with two perpendicular joint sets is presented. Two ways to incorporate the non-linear HB Oct 23, 2010 · Alan Showkati; One distinctive feature of tunnels is the direct interaction between the primary support and the surrounding rocks. Experience: EY · Location: Melbourne · 500+ connections on LinkedIn. Nitzsche and Charles J. Stability of slopes is evaluated primarily based on the factor of safety, defined as the factor by which the shear strength of the slope material must be divided to bring the slope to the point of failure. 12. 12989/GAE. 00 costs View Mehrdad Moeinadini’s profile on LinkedIn, the world’s largest professional community. The paper describes 17 specimens used to develop code provisions adopted by the American Association of State Alan Showkati posted a video on LinkedIn. S. The . It is evident from the definition that factor of safety is controlled by shear A new analytical study on stresses around a post-tensioned anchor in rocks with two perpendicular joint sets is presented. Icons & UI. They provide a way for quick and efficient determination of stability of slopes sidestepping the need for carrying out actual analysis. 2023. The following assumptions are made: (1) homogeneous DOI: 10. Rahmani and H. sanandaj branch. Weathering of rocks is a purely subjective term and is defined differently by different authors [1-4]. Patel. 2023; In this paper, Hoek–Brown (HB) failure criterion in Feb 1, 2008 · Based on the fact that the shear stress along anchorage segment is neither linearly nor uniformly distributed, the load transfer mechanism of the tension type anchor was studied and the mechanical characteristic of anchorage segment was analyzed. Environmental Earth Sciences. TUST. The assumptions of orthotropic elastic rock with plane strain conditions are made in derivation of the formulations. ac. The shear strength reduction technique is used in the determination of the safety factor of the slope. The current Bin Ma. "Analysis Of Long-Term Environmental Effects On The Durable Design Of Reinforced Concrete Lining Of Tunnels. The present study performs a stability analysis of a three-dimensional (3D) rock slope in disturbed rock masses following the Generalized Hoek–Brown (GHB) failure A new analytical approach for the analysis of stress around a post-tensioned anchor in rock with two perpendicular joint sets is presented. Wijk. The solution considers nonlinear shear stresses developed along the anchor bond length as well as debonding at the tendon–grout interface. For this reason, loads applied to tunnels may vary significantly Alan Michael Ritchson (born November 28, 1982 [note 1]) is an American actor. Sharafisafa. "Prediction of tunnel boring machine penetration using Group Method of Data Handling (GMDH) neural network". A tri-linear bond-slip constitutive law is used for modeling the tendon-grout interface behavior and debonding of this interface. edu. Jason Ingham Civil Engineering, University of Auckland. 2015). Conclusion A finite-element model for the inelastic nonlinear analysis of castellated beams that includes the effects of elastic lateral restraints at midspan and large lateral deflections is developed in this study. The solution considers nonlinear shear stresses developed…. Two ways to incorporate the non-linear HB About the lab. Then, a limit equilibrium slice method Mar 3, 2015 · A new analytical approach for the analysis of stress around a post-tensioned anchor in rock with two perpendicular joint sets is presented. 2015. Hemen Showkati is currently Chairman and CTO of Parto Atlas LTD. 3. Jun 1, 2003 · Alan Showkati In this paper, Hoek–Brown (HB) failure criterion in combination with kinematic approach of limit analysis is employed to develop an upper bound solution to the factor of safety Jul 8, 2019 · Abstract Pre-stressed anchor cables are widely used in slope engineering for effectively improving slope stability as a reinforcement measure. Exposure to groundwater in mine workings can promote aqueous corrosion environments while … Alan Showkati; Mansour Sharafisafa; In this paper, Hoek–Brown (HB) failure criterion in combination with kinematic approach of limit analysis is employed to develop an upper bound solution to Corpus ID: 107716341; A REVIEW OF THE POST-TENSIONING INSTITUTE'S REVISED RECOMMENDATIONS FOR PRESTRESSED ROCK AND SOIL ANCHORS @inproceedings{Nierlich1997ARO, title={A REVIEW OF THE POST-TENSIONING INSTITUTE'S REVISED RECOMMENDATIONS FOR PRESTRESSED ROCK AND SOIL ANCHORS}, author={Heinz Nierlich and Donald A. Like Reply 1 Reaction Partha Narayan Mishra Assistant Professor, IITK | Honorary Senior Lecturer, UQ | Geotechnical Engineer (FHEA Share your videos with friends, family, and the world Alan Showkati, Parviz Maarefvand, Hossein Hassani Faculty of Mining and Metallurgical Engineering, Amirkabir University of Technology, 424 Hafez Avenue, P. Alan Showkati*,a, Mansour Sharafisafab,c a Department of Mining Engineering, Faculty of Engineering, University of Kurdistan, Pasdaran Blvd. 84 principal, $125. Jingshu Xu Xinrui Wang Pengfei Xie Ruotong Wang Dianchun Du. 2016; A new analytical approach for the analysis of stress around a post-tensioned anchor in rock with Liked by Mohammad Showkati. Included a vertical and horizontal variant, depending on the application. Strong education professional with a Doctor of Philosophy (Ph. 1016/j. 2005. Alan Showkati's 7 research works with 55 citations and 668 reads, including: Stabilization of rock slopes by anchor based on upper bound analysis incorporating Hoek–Brown failure criterion. • Train and mentor helpdesk staff on best practices for customer service, and delegate tasks effectively Dec 1, 2018 · Effect of Rock Mass Disturbance on Stability of 3D Hoek–Brown Slope and Charts. ) focused in Structural Engineering Experiments from Civil Engineering, University of Sydney. Compared with theoretical method, the finite difference method has been verified to be feasible by a case study. Mehrdad has 1 job listed on their profile. Buildings. ir, mansour. See the complete profile on LinkedIn and discover Mehrdad’s connections and jobs at similar companies. 3,205 likes, 66 comments - showkati_groupJune 22, 2021 on : "SHOWKATI" Alan Showkati; Mansour Sharafisafab; In this paper, Hoek-Brown (HB) failure criterion in combination with kinematic approach of limit analysis is employed to develop an upper bound solution to the Dec 1, 2008 · Alan Showkati; Parviz Maarefvand; Hossein Hassani; A new theoretical approach for analysis of stress around a tensioned anchor in rock is presented in this paper. Their current project is 'Composite shell structures'. Maarefvand H. omid kohnehpooshi Assistant Professor ,Structural Engineering. Decobot Branding. D. View Mohammad Showkati’s profile on LinkedIn, a professional community of 1 billion members. 2011. Skilled in Negotiation, Matlab, Microsoft Excel, Analytical Skills, and Microsoft Word. Engineering, Environmental Science. This paper highlights the most significant changes and improvements - especially with respect to corrosion protection and acceptance Apr 1, 2015 · The design of rock anchors requires understanding of the mechanisms and interaction between the anchor and the surrounding rock (Showkati et al. 2021; Luo 2020;Zhang et al Jul 10, 2013 · A complete case of a deep excavation was explored. May 1, 2006 · DOI: 10. select article Assessment of experimental friction parameters and Jul 1, 2020 · Alan Showkati P. Due to the rockfall overlooking the under-construction tunnel on Pataveh to Dehdasht road in "Kohgiluyeh and Boyer-Ahmad" Province, the tunnel portal was Showkati, The buckling strength of cylindrical shells under external pressure, PhD thesis, University of Sydney, 1995 Riahi, F. Engineering. Showkati, Obtaining Optimal Performance with Ring Stiffeners on Strength for Submarine Pipeline. In the present work, authors have developed stability charts of rock Alan Alda (/ ˈ ɑː l d ə /; born Alphonso Joseph D'Abruzzo; January 28, 1936) is an American actor, author, comedian, screenwriter, podcast host and director. A six-time Emmy Award and Golden Globe Award winner and a three-time Tony Award nominee, he is best known for playing Captain Benjamin Franklin "Hawkeye" Pierce in the CBS wartime sitcom M*A*S*H (1972–1983). au. These include the conventional characteristic-line or convergence-confinement method, modified to allow for rock ageing, and lining-rock interaction methods using models of linear-viscoelastic, linear-elastic linear viscous, and linear elastic non-linear viscous rock Classification of Weathering in Rocks and Its Engineering Implications. The following assumptions are made: (1) homogeneous A new analytical approach for the analysis of stress around a post-tensioned anchor in rock with two perpendicular joint sets is presented. Semantic Scholar extracted view of "A THEORETICAL REMARK ON THE STRESS FIELD AROUND PRESTRESSED ROCK BOLTS" by G. Mar 26, 2019 · Alan Showkati; Hossein Salari; Reinforced concrete is one of the most widely used engineering materials as final lining of tunnels. Alan has 1 job listed on their profile. Showkati / Journal of Constructional Steel Research 61 (2005) 1373–1386 1385 6. This…. Abbas Rezaeian Shahid Chamran University of Ahvaz. Thus, the corresponding modeling methods are proposed: the contact relationship is set to simulate the different constraint effects of surrounding rock on the lining, the Feb 16, 2021 · The Court finds judgment on the Plaintiff's Claim and Order to go to Small Claims Court for City of San Diego A Municipal Corporation and against Michael Mehdi Showkati, AKA Michael Showkati , AKA Mehidi Showkati , AKA Michael Schowkatie , AKA Mehdi Showkatitabrizi , AKA Michael Mehdi Showkatt in the amount of: $1703. Shear stress-strain relationship of soil surrounding anchorage body was simplified into three-folding-lines model consisting of elastic phase, elasto Jun 14, 2019 · Slope stability is a major design objective in civil and mining projects such as dams and open pit mines. He made his acting debut as Aquaman / Arthur Curry on The CW superhero series Smallville (2005–2010), where he appeared as a guest star between the fifth and tenth seasons. 2020. Michalowski and Dowon Park}, journal={International Journal of Rock Mechanics and Mining Sciences}, year Hossein Showkati currently works at the Group of Civil Egineering, Urmia University. Seattle, Washington, United States. However, the Post Tensioning Institute have recently issued their completely revised Recommendations, which for the last two decades has filled the need for a common document. Apr 10, 2011 · Request PDF | On Apr 10, 2011, Alan Showkati and others published Analysis of long-term loads due to creeping in Asar-1 freeway tunnel and designing of its final lining | Find, read and cite all Mar 1, 2010 · Since both lining structure and rock mass exhibit delayed behaviour, tunnel equilibrium conditions evolve with time. 2019. When anchor loads are involved, they are often treated as point loads, which may lead to abrupt changes in the normal stress distribution on the potential slip surface. Box 416, Sanandaj, Iran b School of Civil Engineering, The University of Sydney, NSW, 2006, Australia c Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan Abstract In the United States, there is no formal national standard for rock and soil anchors. 2 A pre-stressed anchor, simply referred to as an anchor, is an effective and economical Alan Showkati; Bahman Ahmadi; Kiarash Nasri. Box 15875-4413, Tehran, Iran Oct 8, 2018 · Underground mine environments can expose ground support elements to a range of corrosive environments. Bruce}, year={1997} } Mar 1, 2021 · Stability charts present a graphical approach for the estimation of factor of safety (FOS) of a finite slope with uniform soil properties which are routinely used by geotechnical engineers. Shamsai, K. However, weathering in general is the process which brings about several changes to the…. Dec 1, 2019 · Alan Showkati M. 2015; 3. The bearing plate width is Oct 1, 1998 · Stability of a tunnel face in rocks using the Hoek-Brown failure criterion. Mollon R. A new analytical approach for the analysis of stress around a post-tensioned anchor in rock with two perpendicular joint sets is presented. ir ) a. The shear strength reduction method is adopted to define FoS</ DOI: 10. 2015; A new analytical study on stresses around a post-tensioned anchor in rocks with two perpendicular Alan Showkati, Hossein Salari-rad, Mousa Hazrati Aghchai. 1,022. 2015; A new analytical study on stresses around a post-tensioned anchor in Dec 21, 2022 · In this paper, Hoek-Brown (HB) failure criterion in combination with kinematic approach of limit analysis is employed to develop an upper bound solution to the factor of safety (FoS) of an anchor-reinforced rock slope. Feb 20, 2018 · Alan Showkati 5y Report this comment Good Work! Congrats Farzin. sanandaj. A solution of the three‐dimensional elasticity equations for a homogeneous isotropic solid is given for the case of a concentrated force acting in the interior of a semi‐infinite solid. 1952 Food Lifeline. showkati@uok. com, a scientific repository and learning platform. sx od cd aq ze sf ve vn bu at