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DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

Plastic deformation and fracture of masonry under biaxial stresses

Vestnik MGSU 2/2016
  • Kabantsev Oleg Vasil’evich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Professor, Department of Reinforced Concrete and Masonry Structures, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 34-48

Masonry is a complex multicomponent composite composed of dissimilar materials (brick / stone and mortar). The process of masonry deformation under load depends on the mechanical characteristics of the basic composite materials, as well as of the parameters belonging to the elements, which define the link between brick and mortar being the structural elements. The paper provides an analysis of the experimental study results of masonry behaviour in two-dimensional stress state at primary stresses of opposite signs; identifies the mechanisms of masonry failure that are in compliance with the conditions of stress state. The work shows the key role that structural elements play in the formation of masonry failure processes. On the basis of failure mechanisms educed from the experiments, there was developed a discrete model of masonry. The processes and the corresponding strength criteria, which play a key role in the implementation of plastic deformation phase, have been detected. It has been shown that the plastic deformation of masonry under biaxial stresses occurs in case of the physical linear behavior of the basic materials (brick and mortar). It has been also substantiated that the plastic properties of masonry under biaxial stresses are determined by the processes occurring at the contact interaction nodes between brick and mortar in bed and cross joints. The values of the plasticity coefficients for masonry depending on the mechanical properties of a brick, a mortar and adhesive strength in their interaction have been obtained basing on the results of the performed numerical investigations.

DOI: 10.22227/1997-0935.2016.2.34-48

References
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MAIN PRINCIPLES OF RESEARCH OF THE OCCUPATIONAL STRUCTURE OF BUILDERS IN PRE-MONGOLIAN RUS

Vestnik MGSU 6/2012
  • Gatsunaev Konstantin Nikolaevich - Moscow State University of Civil Engineering (MSUCE) Candidate of Philosophical Sciences, Associated Professor, Department of History and Culturology, +7 (499) 183-21-29, 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 150 - 154

The subject matter of the article is the construction industry in the years of pre-Mongolian Rus. The complexity and diversity of the construction process reflect some peculiarities of the social life in ancient Rus. Therefore, the study of the construction industry reveals particular technological advancements as well as the professional and social organization of crafts in ancient Rus. In the article, the organization of the building process is considered as an integrated process.
A considerable amount of information can be obtained from ancient sources, such as monuments, although they do not constitute any accurate evidence of the construction process. We may identify the number of the so-called "artels" (construction gangs), as well as trace their routes from one construction centre to another. By the commencement of the Mongolian invasion, construction gangs had already established close connections with the prince in power, and their routes were always determined by dynastic relationships of princes. Their work was strongly influenced by Byzantine and West European countries. Therefore, the analysis of the whole construction industry is a vital constituent of the study of the history and culture of ancient Russians.

DOI: 10.22227/1997-0935.2012.6.150 - 154

References
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  2. Rappoport P.A. Drevnerusskaya arkhitektura [Ancient Russian Architecture]. St.Petersburg, Stroyizdat Publ., 1993, 286 p.
  3. Viktorov A. Kamenolomni Drevney Rusi [Stone Quarries of Ancient Rus]. Arkhitektura i stroitel’stvo Moskvy [Architecture and Construction of Moscow], 1987, no. 8, pp. 25—28.
  4. Komech A.I. Drevnerusskoe zodchestvo kontsa X — nach. XII v.: Vizantiyskoe nasledie i stanovlenie samostoyatel’noy traditsii [Ancient Russian Architecture of the Late 10th – Early 12th Centuries. Byzantine Heritage and Conception of Independent Traditions]. Moscow, Nauka Publ., 1987, 319 p.
  5. Kievo-Pecherskiy paterik. Pamyatniki literatury Drevney Rusi: XII vek [Kiyevo-Pechrky Paterikon. Literary Monuments of Ancient Rus; 12th Century]. Moscow, Nauka Publ., 1980, 424 p.
  6. Komech A.I. Arkhitektura Vladimira 1150—1180-kh gg. Khudozhestvennaya priroda i genezis «russkoy romaniki» [The Architecture of Vladimir of 1150—1180. Artistic Nature and Genesis of the Russian Romanticism]. Drevnerusskoe iskusstvo. Rus’ i strany vizantiyskogo mira. XII vek [Ancient Russian Art. Rus and Byzantine Countries. 12th Century]. St.Petersburg, 2002, pp. 231—254.

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