INTERACTION BETWEEN FINITE STIFNESS STRUCTURES WITH THE DOUBLE-LAYERED SOIL BEDDING IN THE COURSE OF SEISMIC LOADS

Vestnik MGSU 4/2012
  • Ter-Martirosyan Zaven Grigor'evich - Moscow State University of Civil Engineering (MSUCE) , Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Jaro Mokhammed Nazeem - Moscow State University of Civil Engineering (MSUCE) postgraduate student, Department of Soil Mechanics, Beddings and Foundations, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 121 - 125

In the paper, the authors present their research of the stress-strain behavior of the doublelayered soil bedding interacting with structures in the course of seismic excitation by taking account of elastic and plastic properties of the soil. Seismic excitation of soil causes irreversible residual stresses and settlements, local failure zones, cracks in the soil surface and structures that interact with it. The analysis of residual stresses and settlements caused by the seismic excitation is one of relevant problems of soil dynamics.
The factors that boost stresses and settlements in the course of seismic excitation include the intensity of the earthquake, the amplitude and frequency of vibrations of structures. In some cases, seismic excitation leads to resonance that may cause failure of the structure. The use of the elastic and plastic model makes it possible to identify the local zone of structural failure and residual deformations. The important factor of projecting the stress-strain state of soil during seismic excitation is the boundary condition of the model used for the analysis purposes. It is clear that the model used for seismic analysis purposes must be bigger than the one used for static analysis purposes. The results have proven that heterogeneous stresses and deformations originate in the soil bedding, and the heavier the structure, the longer the period of decay of vibrations.

DOI: 10.22227/1997-0935.2012.4.121 - 125

References
  1. Ishikhara K. Povedenie gruntov pri zemletryaseniyakh [Soil Behaviour in the course of Earthquakes]. St.Petersburg, NPO «Georekonstruktsiya-Fundament-Proekt» [Research and Production Association “Geological Structures — Foundations - Designs]. 2006, 384 p.
  2. SNiP II-7—81* Stroitel'stvo v seysmichnykh rayonakh. Normy proektirovaniya [Construction Norms and Rules II-7—81*. Construction in Seismic Areas. Norms of Design]. Moscow, Stroyizdat Publ., 1982.
  3. Stavnitser L.R. Seysmostoykost' osnovaniy i fundamentov [Seismic Resistance of Beddings and Foundations]. Moscow, ASV Publ., 2010, 446 p.
  4. Ter-Martirosyan Z. G. Mekhanika gruntov [Soil Mechanics]. Moscow, ASV Publ., 2009, 552 p.
  5. Chopra A.K. and Gutierrez J.A. Earthquake Response Analysis of Multistory Buildings including Foundation Interaction. Journal of Earthquake Engineering and Structural Dynamics, 1974, vol. 3, pp. 65-77.
  6. Lysmer J., Kuhlmeyer R.L. Finite Dynamic Model for Infinite Media. ASCE. J. of the Eng. Mech. Div., 1969, pp. 859-877.
  7. Naylor D.J. and Pande G.N. Finite Elements in Geomechanics. Pineridge Press Limited, 1981.

Download

LINGUISTIC TRAINING OF A BACHELOR

Vestnik MGSU 4/2012
  • Shvetsova Ol'ga Aleksandrovna - Moscow State University of Civil Engineering (MSUCE) Professor, Candidate of Pedagogical Sciences, Department of Foreign Languages, + 7 (499) 183-26-47, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 235 - 239

The article is a brief generalization of methodical research in the field of higher education and the presentation in this aspect of special components of foreign language teaching in non-linguistic training of a civil engineer. It also considers communicative skills which bachelors should possess at the present stage of contemporary education. Among them are: analyzing synthesizing, argumentation, speculation and some other which can be useful in professional communication in foreign language .Some helpful advice is offered on how to develop professional communicative competence.
Currently, higher professional education is in the course of transition to the new federal state standards of education. According to the new standards, foreign language proficiency is identified as one of basic cultural competences of a graduate of higher education institutions, irrespective of his or her speciality or specialization. A foreign language course is retained among other obligatory basic courses in arts, social sciences, and economics. Moreover, the strategic concept of European cooperation in education through 2020 identifies the objectives of foreign language proficiency with regard to the need to strengthen and to develop the systemic interrelation between education and innovative research.
The term "competence building approach" is used in the Russian system of education. This term is widely used in official documents.
The competence building approach means transition from the assessment of knowledge as the dominant practice to the assessment of competences, or the capability to process the ever-growing amount of information (in the event of a foreign language course, the information is processed in a foreign language).
Currently, general and professional competencies are being identified.

DOI: 10.22227/1997-0935.2012.4.235 - 239

References
  1. Development of New Federal State Educational Standards of Higher Professional Education. Two-level Education at a Modern University. Proceedings of the Bologna process. Research Centre for Quality Training of Specialists. Moscow, 2003.
  2. Baydenko V.I. Osnovnye tendentsii razvitiya vysshego obrazovaniya: global'nye i Bolonskie izmereniya [Basic Trends of Higher Education Development: Global and Bologna Assessments]. Moscow, 2006.
  3. Baydenko V.I. Vyyavlenie sostava kompetentsiy vypusknikov VUZov kak neobkhodimyy etap proektirovaniya GOS VPO novogo pokoleniya [Identification of the Structure of Competences of Graduates of Higher Education Institutions as the Indispensable Stage of Development of the New Generation of State Standards of Higher Professional Education]. Moscow, 2006.
  4. Zimnyaya I.A. Klyuchevye kompetentnosti kak rezul'tativno-tselevaya osnova kompetentnostnogo podkhoda v obrazovanii [Key Competences as the Effective and Goal-Oriented Basis of the Competence-based Approach in Education]. Methodology Seminar “Russia in the Bologna Process. Problems, Tasks, Prospects”. Proceedings. Moscow, 2004.
  5. Tatur Yu.G. Kompetentnostnyy podkhod v opisanii rezul'tatov i proektirovanii standartov vysshego professional'nogo obrazovaniya [Competence-based Approach to Description of Results in Development of Higher Professional Education Standards]. Methodology Seminar “Russia in the Bologna Process. Problems, Tasks, Prospects”. Proceedings. Moscow, 2004.
  6. Shvetsova O.A., Ershova T.A. Programma podgotovki bakalavrov po spetsial'nosti «Prakticheskoe yazykoznanie» [Practical Linguistics Training Course Programme for Bachelor Students]. Moscow, Moscow State University of Civil Engineering, 2010.
  7. Shvetsova O.A. Programma podgotovki magistrov po spetsial'nosti «Prakticheskoe yazykoznanie» [Practical Linguistics Training Course Programme for Master Students]. Moscow, Moscow State University of Civil Engineering, 2010.
  8. Fallows S., Steveen C. Integrating Key Skills in Higher Education. London, 2000.

Download

The history and development prospects of one of the methods for solving multidimensional problems of structural mechanics

Vestnik MGSU 12/2015
  • Mkrtychev Oleg Vartanovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Head of Research Laboratory “Reliability and Earthquake Engineering”, Professor, Department of Strength of Materials, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Dorozhinskiy Vladimir Bogdanovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Assistant Lecturer, Department of Strength of Materials, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Sidorov Dmitriy Sergeevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Assistant Lecturer, Department of Strength of Materials, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 66-75

Earthquakes can be very strong and can lead to significant damages. Effect of earthquakes depend on seismic action characteristics (intensity, spectral composition, etc.), foundation soil properties in region of construction, design and construction quality. In seismically dangerous regions structural calculations the current design standards suppose the use of the coefficient K1, which takes account the non-linear work of construction material and the allowable damages of structures. Our research shows that a stiffening core fails in case of intensive earthquake if the walls are designed according to current design standards. Thus, plastic deformations do not occur and develop in the supporting elements at the beginning of the process, so the lowering coefficient K1 should be disregarded. As stiffening core is projected with account for the reduction factor K1, the existing reinforcement is not enough for standing the emerging stress and its failure happens followed by a redistribution of the stress to frame columns. The columns are also projected with account for the reduction factor K1 and are not able to take such an increase stress beyond design. There is destruction of column frame and complete collapse of the building. So seismic resistance of bearing structures is reduced several times. The approach to estimating K1 must be responsible, based on the latest scientific research, which sometimes could not be done according to the acting design standards.

DOI: 10.22227/1997-0935.2015.12.66-75

References
  1. Aptikaev F.F. Mery po snizheniyu ushcherba ot zemletryaseniy [Measures to Reduce Earthquake Damage]. Prirodnye opasnosti Rossii [Natural Hazards of Russia]. Moscow, Kruk Publ., 2000, chapter 7, pp. 165—195. (In Russian)
  2. Bednyakov V.G., Nefedov S.S. Otsenka povrezhdaemosti vysotnykh i protyazhennykh zdaniy i sooruzheniy zheleznodorozhnogo transporta pri seysmicheskikh vozdeystviyakh [Evaluation of Seismic Damage to High and Extended Buildings and Structures of Railway Transport]. Transport: nauka, tekhnika, upravlenie [Transport: Science, Technology, Management]. 2003, no. 12, pp. 24—32. (In Russian)
  3. Polyakov S.V. Posledstviya sil’nykh zemletryaseniy [Consequences of Strong Earthquakes]. Moscow, Stroyizdat Publ., 1978, 311 p. (In Russian)
  4. Pshenichkina V.A., Zolina T.V., Drozdov V.V., Kharlanov V.L. Metodika otsenki seysmicheskoy nadezhnosti zdaniy povyshennoy etazhnosti [Methods of Estimating Seismic Reliability of High-Rise Buildings]. Vestnik Volgogradskogo gosudarstvennogo arkhitekturno-stroitel’nogo universiteta. Seriya: Stroitel’stvo i arkhitektura [Bulletin of Volgograd State University of Architecture and Civil Engineering. Series: Construction and Architecture]. 2011, no. 25, pp. 50—56. (In Russian).
  5. Khachatryan S.O. Spektral’no-volnovaya teoriya seysmostoykosti [Spectral-Wave Theory of Seismic Stability]. Seysmostoykoe stroitel’stvo. Bezopasnost’ sooruzheniy [Antiseismic Construction. Structures Safety]. 2004, no. 3, pp. 58—61. (In Russian)
  6. Radin V.P., Trifonov O.V., Chirkov V.P. Model’ mnogoetazhnogo karkasnogo zdaniya dlya raschetov na intensivnye seysmicheskie vozdeystviya [A Model of Multi-Storey Frame Buildings for Calculations on Intensive Seismic Effects]. Seysmostoykoe stroitel’stvo. Bezopasnost’ sooruzheniy [Antiseismic Construction. Safety of Structures]. 2001, no. 1, pp. 23—26. (In Russian)
  7. Tyapin A.G. Raschet sooruzheniy na seysmicheskie vozdeystviya s uchetom vzaimodeystviya s gruntovym osnovaniem [Structural Analysis on Seismic Effects With Account for Interaction with Soil Foundation]. Moscow, ASV Publ., 2013, 399 p. (In Russian)
  8. Chopra Anil K. Elastic Response Spectrum: A Historical Note. Earthquake Engineering and Structural Dynamics. 2007, vol. 36, no. 1, pp. 3—12. DOI: http://dx.doi.org/10.1002/eqe.609.
  9. Khavroshkin O.B., Tsyplakov V.V. Nelineynaya seysmologiya: nekotorye fundamental’nye i prikladnye problemy razvitiya [Nonlinear Seismology: Some Fundamental and Applied Problems of Development]. Fundamental’nye nauki — narodnomu khozyaystvu : sbornik [Fundamental Sciences to National Economy : Collection]. Moscow, Nauka Publ., 1990, pp. 363—367. (In Russian)
  10. Stefanishin D.V. K voprosu otsenki i ucheta seysmicheskogo riska pri prinyatii resheniy [Assessment and Consideration of Seismic Risk in Decision-Making]. Predotvrashchenie avariy zdaniy i sooruzheniy : sbornik nauchnykh trudov [Preventing Accidents of Buildings and Structures: Collection of Scientific Works]. 10.12.2012. Available at: http://www.pamag.ru/pressa/calculation_seismic-risk. (In Russian)
  11. Simbort E.Kh.S. Metodika vybora koeffitsienta reduktsii seysmicheskikh nagruzok K1 pri zadannom urovne koeffitsienta plastichnosti m [Methodology of Selecting Seismic Loads Gear Ratio of Reduction K1 with Given Plastic Ratio m]. Inzhenerno-stroitel’nyy zhurnal [Engineering and Construction Journal]. 2012, vol. 27, no. 1, pp. 44—52. (In Russian)
  12. Mkrtychev O.V., Dzhinchvelashvili G.A. Analiz ustoychivosti zdaniya pri avariynykh vozdeystviyakh [Analysis of Building Sustainability during Emergency Actions]. Nauka i tekhnika transporta [Science and Technology on Transport]. 2002, no. 2, pp. 34—41. (In Russian)
  13. Mkrtychev O.V., Yur’ev R.V. Raschet konstruktsiy na seysmicheskie vozdeystviya s ispol’zovaniem sintezirovannykh akselerogramm [Structural Analysis on Seismic Effects Using Synthesized Accelerograms]. Promyshlennoe i grazhdanskoe stroitel’stvo [Industrial and Civil Engineering]. 2010, no. 6, pp. 52—54. (In Russian)
  14. Dzhinchvelashvili G.A., Mkrtychev O.V. Effektivnost’ primeneniya seysmoizoliruyushchikh opor pri stroitel’stve zdaniy i sooruzheniy [Effectiveness of Seismic Isolation Bearings during the Construction of Buildings and Structures]. Transportnoe stroitel’stvo [Transport Construction]. 2003, no. 9, pp. 15—19. (In Russian)
  15. Mkrtychev O.V. Bezopasnost’ zdaniy i sooruzheniy pri seysmicheskikh i avariynykh vozdeystviyakh [Safety of Buildings and Structures in Case of Seismic and Emergency Loads]. Moscow, MGSU Publ., 2010, 152 p. (In Russian)
  16. Datta T.K. Seismic Analysis of Structures. John Wiley & Sons (Asia) Pte Ltd, 2010, 464 p.
  17. Dr. Sudhir K. Jain, Dr. C.V.R. Murty. Proposed Draft Provisions and Commentary on Indian Seismic Code IS 1893 (Part 1). Kanpur, Indian Institute of Technology Kanpur, 2002, 158 p.
  18. Guo Shu-xiang, Lü Zhen-zhou. Procedure for Computing the Possibility and Fuzzy Probability of Failure of Structures. Applied Mathematics and Mechanics. 2003, vol. 24, no. 3, pp. 338—343. DOI: http://dx.doi.org/10.1007/BF02438271.
  19. Housner G.W. The Plastic Failure of Frames during Earthquakes. Proceedings of the 2nd WCEE, Tokyo&Kyoto. Japan, 1960, vol. II, pp. 997—1012
  20. Pintoa P.E., Giannini R., Franchin P. Seismic Reliability Analysis of Structures. Pavia, Italy, IUSS Press, 2004, 370 p.

Download

Research of stress-strain state and stability of a rokfill dam under seismic actions

Vestnik MGSU 11/2015
  • Orekhov Vyacheslav Valentinovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, chief research worker, Scientific and Technical Center “Examination, Design, Inspection”, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 157-166

One of the main factors determining the safety of earth sea and river hydraulic structures erected on water-saturated grounds is the process of consolidation, manifested under the action of static and seismic loads. A feature of cohesionless soils located in the structure itself or in its base, is their potential ability to liquefaction under seismic impacts. This paper describes the method of calculating the saturated soil’s environments under seismic actions based on the numerical solution of differential equations of the theory of consolidation by finite element method. The results of the static problem solving for the phased construction of the installation are used as the initial conditions. In order to describe the deformability of soil materials mathematical model formed by the theory of plastic flow with hardening is used. The parameters of this model are determined by the results of triaxial testing of soils. As an example, we study the interaction of a sea rockfill dam with a sandy base under seismic impacts, determined by the synthetic accelerograms. The results of calculations of the stress-strain state of the two sections of the dam (shallow and deep) are presented, and assessment is made of the possibility of liquefaction of sandy soil base. It is shown that the pore pressure that occurs in water-saturated cohesionless soil base and the body of the dam under seismic impacts, unloads the soil skeleton, which leads to a decrease in local shear safety factors. And, in the less dense soil base of the shallow section of the dam, the soil skeleton is unloaded to a greater extent, which negatively affects its overall safety factor.

DOI: 10.22227/1997-0935.2015.11.157-166

References
  1. Belkova I.N., Glagovskiy V.B., Gol’din A.L., Lipovetskaya T.F. Konsolidatsiya osnovaniya i osadki damby D-3 kompleksa zashchitnykh sooruzheniy ot navodneniy Sankt-Peterburga [Consolidation of the Basе and Settlements of the Dam D-3 of Flood Protection Barrier Complex of St. Petersburg]. Izvestiya VNIIG im. B.E. Vedeneeva [Proceedings of B.E. Vedeneev VNIIG]. 2003, vol. 242. Osnovaniya i gruntovye sooruzheniya [Bases and Soil Foundations]. Pp. 60—67. (In Russian)
  2. Bugrov A.K., Golli A.V., Kagan A.A., Kuraev S.N., Pirogov I.A., Shashkin A.G. Naturnye issledovaniya napryazhenno-deformirovannogo sostoyaniya i konsolidatsii osnovaniy sooruzheniy kompleksa zashchity Sankt-Peterburga ot navodneniy [Field Studies of Stress-Strain State and Consolidation of Structures Foundations of Flood Protection Complex of Saint Petersburg]. Osnovaniya, fundamenty i mekhanika gruntov [Soil Mechanics and Foundation Engineering]. 1997, no. 1, pp. 2—9. (In Russian)
  3. Li Sa, Li Jingmei, Yang Jinliang. Liquefaction Analysis of the Foundation of Erwangzhuang Reservoir Dam in Tianjin. Proc. of the 4th Int. Conf. on Dam Engineering. Nanjing. A.A. Balkema. 2004, pp. 477—483.
  4. Zaretskiy Yu.K., Orekhov V.V. Seysmostoykost’ gruntovykh plotin [Seismic Stability of Earth Dams]. Sbornik nauchnykh trudov Gidroproekta [Collection of the Scientific Papers of Hydroproject]. Moscow, 2000, no. 159, pp. 361—372. (In Russian)
  5. Seed H.B., Lee K.L., Idriss I.M., Makadisi F.I. The Slides in the San Fernando Dams during the Earthquake of February 9, 1971. ASCE. J. of the Geotechnical Engineering Division. 1975, vol. 101, no. 7, pp. 651—688.
  6. Olson S.M., Stark T.D. Yield Strength Ratio and Liquefaction Analysis of Slopes and Embankments. Journal of Geotechnical and Geoenvironmental Engineering. 2003, vol. 129, no. 8, pp. 727—737. DOI: http://dx.doi.org/10.1061/(ASCE)1090-0241(2003)129:8(727).
  7. Seid-Karbasi M., Atukorala U. Deformations of a Zoned Rockfill Dam from a Liquefiable Thin Foundation Layer Subjected to Earthquake Shaking. 21st Century Dam Design —Advances and Adaptations. 31st Annual USSD Conference San Diego. California. April 11—15, 2011, pp. 1351—1367.
  8. Ohmachi T., Kohayakawa M. Missing Water at the Aratozawa Dam due to the Iwate-Miyagi Nairiku Earthquake in 2008. Proc. of the Int. Symp. on Dams for a Changing World — 80th Annual Meet. and 24th Cong. of ICOLD. Kyoto. Japan. 2012, pp. (6) 59—64.
  9. Casagrande A. Liquefaction and Cyclic Deformation of Sands. A Critical Review. Proceedings of the Fifth Panamerican Conference on Soil Mechanics und Foundation Engineering. Buenos Aires. Harvard Soil Mechanics Series. 1976, no. 88, 27 p.
  10. Seed H.B., Idriss I.M. Simplified Procedures for Evaluation Soil Liquefaction Potential. Journal of Soil Mechanics and Foundation Engineering. ASCE. Vol. 97, no. 9, pp. 1249—1273.
  11. Maslov N.N. Osnovy inzhenernoy geologii i mekhaniki gruntov [Fundamentals of Engineering Geology and Soil Mechanics]. Moscow, Vysshaya shkola Publ., 1982, 512 p. (In Russian)
  12. Seed H.B., Lee K.L. Liquefaction of Saturated Sands during Cyclic Loading. Journal of ASCE. 1996, vol. 92, no. 6, pp. 105—134.
  13. Kenji Ishihara. Soil Behavior in Earthquake Geotechnics. Clarendon Press. Oxford, 1996, 340 p.
  14. Youd T.L., Idriss I.M., Andrus R.D., Arango I., Castro G., Christian J.T., Dobry R., Finn W.D.L., Harder L.F., Hynes M.E., Ishihara K., Koester J.P., Liao S.S.C., Marcuson W.F., Martin G.R., Mitchell J.K., Moriwaki Y., Power M.S., Robertson P.K., Seed H.B., Stokoe K.H. Liquefaction Resistance of Soils: Summary Report from the 1996 NCEER and 1998 NCEER/NSF Workshops on Evaluation of Liquefaction Resistance of Soils. Journal of Geotechnical and Geoenvironmental Engineering. 2001, 127 (10), pp. 817—833. DOI: http://dx.doi.org/10.1061/(ASCE)1090-0241(2001)127:10(817).
  15. Orekhov V.V. Ob''emnaya matematicheskaya model’ i rezul’taty raschetnykh issledovaniy napryazhenno-deformirovannogo sostoyaniya osnovnykh sooruzheniy Rogunskoy GES [Volume Mathematical Model and the Results of Numerical Studies of the Stress-strain State of the Main Structures of the Rogun HPP]. Gidrotekhnicheskoe stroitel’stvo [Hydrotechnical Construction]. 2011, no. 4, pp. 12—19. (In Russian)
  16. Orekhov V.V. Raschet vzaimodeystviya sooruzheniy i vodonasyshchennykh gruntovykh osnovaniy pri staticheskikh i seysmicheskikh vozdeystviyakh [Calculation of the Interaction of Constructions and Water-Saturated Soil Foundations under Static and Seismic Loads]. Osnovaniya, fundamenty i mekhanika gruntov [Soil Mechanics and Foundation Engineering]. 2015, no. 2, pp. 8—12. (In Russian)
  17. Biot M.A. Theory of Propagation of Elastic Waves in Fluid Saturated Porous Solid. J. Acoust. Soc. of America. 1956, vol. 28, no. 1, pp. 168—179.
  18. Zaretskiy Yu.K., Lombardo V.N. Statika i Dinamika Gruntovykh Plotin [Statics and Dynamics of Earth Dams]. Moscow, Energoatomizdat Publ., 1983, 255 p.
  19. Zaretskiy Yu.K., Korchevskiy V.F. Zheleznodorozhnyy perekhod s materika na o. Sakhalin cherez proliv Nevel’skogo — Variant s glukhoy damboy i sudokhodnym kanalom [Railroad Crossing from the Mainland to Sakhalin Island across the Strait Nevelsky — Option with Deaf Dam and Navigation Channels]. Gidrotekhnicheskoe stroitel’stvo [Hydrotechnical Construction]. 2008, no. 4, pp. 42—49. (In Russian)
  20. Orekhov V.V. Kompleks vychislitel’nykh programm «Zemlya-89» [Computing Programs Complex “Earth-89”]. Issledovaniya i razrabotki po komp’yuternomu proektirovaniyu fundamentov i osnovaniy : mezhvuzovskiy sbornik [Interuniversity Collection “Research and Development in Computer-aided Design of Foundations and Bases”]. Novocherkassk, 1990, pp. 14—20. (In Russian)

Download

Results 1 - 4 of 4