Error
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
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  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
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  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering
  • Error loading Modules:Can't create/write to file '/var/lib/mysql/tmp/#sql_bd4_0.MYI' (Errcode: 30) SQL=SELECT id, title, module, position, content, showtitle, control, params FROM jos_modules AS m LEFT JOIN jos_modules_menu AS mm ON mm.moduleid = m.id WHERE m.published = 1 AND m.access <= 0 AND m.client_id = 0 AND ( mm.menuid = 8 OR mm.menuid = 0 ) ORDER BY position, ordering

RESEARCH OF BUILDING MATERIALS

COMPARATIVE EVALUATION OF DETERMINATION OF PHYSICAL AND MECHANICAL PROPERTIES of HIGH-HOLLOW ceramic wall products on the basis of modern software systems

Vestnik MGSU 1/2017 Volume 12
  • Bedov Anatoliy Ivanovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Professor, Department of Reinforced Concrete and Stone Structures, Moscow State University of Civil Engineering (National Research University) (MGSU), 26, Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Gaysin Askar Miniyarovich - Ufa State Petroleum Technological University (USPTU) Candidate of Technical Sciences, Associate Professor, Department of Building Structures, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.
  • Gabitov Azat Ismagilovich - Ufa State Petroleum Technological University (USPTU) Doctor of Technical Sciences, Professor, Department of Building Structures, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.
  • Kuznetsov Dmitriy Valeryevich - Ufa State Petroleum Technological University (USPTU) Candidate of Technical Sciences, Associate Professor, Department of Building Structures, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.
  • Salov Aleksandr Sergeevich - Ufa State Petroleum Technological University (USPTU) Candidate of Technical Sciences, Associate Professor, Department of Highways and Technology of Construction Operations, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.
  • Abdulatipova Elena Midkhatovna - Ufa State Petroleum Technological University (USPTU) Doctor of Technical Sciences, Associate Professor, Professor of Department of Technological Machines and Equipment, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.

Pages 17-25

Energy efficiency in construction is the main direction of energy saving in which the basic measure is to reduce heat losses through walling. In this regard, a particularly promising measure is an application of high-hollow multislot ceramic for external walls due to its predictable properties and reliability in operation. Range of high-hollow ceramic products currently manufactured in the Republic of Bashkortostan is considered in the article. Simulation and calculation of strength characteristics of high-hollow ceramic stones in the SCAD program system were performed, fracture model geometric parameters were obtained. Results of mechanical tests of high-hollow ceramic products are shown. The simulation and calculations performed in the SCAD program system with obtaining of geometric parameters of the fracture model made it possible to compare the convergence of calculation results with actual test results. Based on the results of the performed research it is concluded that the fracture model in the SCAD program system has practically coincided with the fracture pattern obtained in the process of experimental study of strength of high-hollow ceramic stones.

DOI: 10.22227/1997-0935.2017.1.17-25

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STRESS-STRAIN STATE OF AN ELASTIC HALF-PLANE AT A LINEAR SHIFT OF A PART OF ITS BOUNDARY

Vestnik MGSU 2/2017 Volume 12
  • Bogomolov Aleksandr Nikolaevich - Institute of Architecture and Civil Engineering of Volgograd State Technical University (IACE VSTU) Head of Department of Hydraulic and Earthwork Structures, Deputy Director for Science, Institute of Architecture and Civil Engineering of Volgograd State Technical University (IACE VSTU), 1 Akademicheskaya str., Volgograd, 400074, Russian Federation.
  • Ushakov Andrey Nikolaevich - 1 Akademicheskaya str., Volgograd, 400074, Russian Federation Professor, Department of Mathematics and Information Technology, 1 Akademicheskaya str., Volgograd, 400074, Russian Federation, 1 Akademicheskaya str., Volgograd, 400074, Russian Federation.

Pages 184-192

Loads cause vertical shifts of foundations of all structures, and the safe operation of buildings depends on the value thereof. The article presents a solution of the problem of stress distribution in a homogeneous and isotropic soil mass under vertical linear shift of a part of its boundary obtained by the complex potentials method. Expressions for stress components and strain components of the second basic boundary plane problem of the theory of elasticity for half-plane at the linear shift (the law of linear shift) of a part of its boundary are determined in a closed form. Patterns of isolines of stress and strain components are built; they illustrate that numerical values of all like-named components located at corresponding points on opposite sides of the symmetry axis are equal in value but opposite in sign. The formula of subsidence that occurs at the shift of the half-plane boundary part was derived. The value of subsidence is directly proportional to the boundary part shift value and inversely proportional to the lateral soil pressure coefficient value. Conclusions: expressions for stress and strain components of the second basic boundary plane problem of the theory of elasticity for half-plane are obtained in a closed form. Values of the stress and strain components are symmetric relative to the origin and opposite in sign; the formula of subsidence for half-plane boundary vertical shift is obtained on the basis of the expression for the vertical strain component.

DOI: 10.22227/1997-0935.2017.2.184-192

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