BEDDINGS AND FOUNDATIONS, SUBTERRANEAN STRUCTURES. SOIL MECHANICS

Investigation of foundation pit excavation influence on adjacent buildings

Vestnik MGSU 6/2014
  • Zertsalov Mikhail Grigor'evich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Department of Soil Mechanics and Geotechnics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kazachenko Sergey Andreevich - Moscow State University of Civil Engineering (MGSU) Assistant Lecturer, Department of Soil Mechanics and Geotechnics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Konyukhov Dmitriy Sergeevich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Soil Mechanics and Geotechnics, Moscow State University of Civil Engineering (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 77-86

Modern urban policies, particularly in major towns, involve the active use of underground space that poses the problem of assessing the impact of excavation on the existing buildings as one of the most urgent. Surface and semi-closed construction methods are currently widespread in the process of urban civil and transport underground facilities construction. The depth of excavation can reach 30 m, but more often, in everyday practice common foundation pits have shallower depth, accommodating 2—4 underground levels (6—12 m).
In the process of solving such problems not only the forces occurring in the foundation pit fence are of great interest, but also a quantitative change in the stress-strain state of the rock mass. In modern engineering practice in order to solve them numerical methods based on the finite element method are widely applied, which can quantify soil stress-strain state.
In this study, the authors present the investigation of the influence of various factors within their variation on the additional deformations of adjacent buildings located in the influence zone, using the design of experiment method. The study is based on 3-dimensional numerical simulation with the use of finite element method. Such calculated factors were taken: the depth of excavation (X1), modulus of deformation (X2), the distance to the building (X3) and distributed load of the building (X4).
As a result, regression equations to determine the maximum additional deformation of building and horizontal displacement of the pit fence were derived from the calculations carried out. Also, the graphs describing these dependencies and illustrating the effect of each factor were presented

DOI: 10.22227/1997-0935.2014.6.77-86

References
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DETERMINATION OF PARAMETERS OF THE PROCESS OF REGENERATION OF USED ENGINE OIL USING MEMBRANES ON THE BASISOF THE EXPERIMENTAL AND STATISTICAL MODEL

Vestnik MGSU 2/2013
  • Fedosov Sergey Viktorovich - Ivanovo State University of Architecture and Civil Engineering (IGASU) Doctor of Technical Sciences, Professor, Member, Russian Academy of Architecture and Construction Sciences (RAACS), President, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8ogo Marta St., Ivanovo, 153037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Maslennikov Valeriy Aleksandrovich - Ivanovo State Polytechnic University (IVGPU) Candidate of Technical Sciences, Associate Professor, chair, Department of Vehicles and Vehicle Fleet, Ivanovo State Polytechnic University (IVGPU), 20, 8 Marta str., Ivanovo, 153037, Russian Federation.
  • Osadchiy Yuriy Pavlovich - Ivanovo State University of Architecture and Civil Engineering (IGASU) Doctor of Technical Sciences, Professor, Member, Russian Academy of Architecture and Construction Sciences (RAACS), President, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8ogo Marta St., Ivanovo, 153037, Russian Federation.
  • Markelov Aleksandr Vladimirovich - Ivanovo State University of Architecture and Civil Engineering (IGASU) Doctor of Technical Sciences, Professor, Member, Russian Academy of Architecture and Construction Sciences (RAACS), President, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8ogo Marta St., Ivanovo, 153037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 73-79

Application of mathematical methods of optimization of the process of filtration as part of recovery of used engine oils is considered in the article. The method of the full factorial experiment which contemplates generation of the mathematical model of the filtering process is applied with account for numerous factors and missing data. The mathematical model provides the information about the influence of various factors to identify the quantitative values of response functions in the pre-set mode of the process to serve as the basis for optimization.Permeability of polymeric membranes, liquid flow velocity and temperature have been chosen as filtration optimization criteria. As a result of the mathematical processing of the experimental data, factors have been calculated and verified in terms of their importance, and the process description has been provided in the form of a regression equation. Dependences obtained by the authors are recommended for use in the calculation of the process of permeability. For example, they may be used to substantiate the periodicity of maintenance of filtration units.

DOI: 10.22227/1997-0935.2013.2.73-79

References
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  2. Gritsenko V.O., Orlov N.S. Primenenie mikrofil’tratsii dlya regeneratsii otrabotannykh motornykh masel [Use of Microfiltration for Recovery of Used Motor Oils]. Membrany [Membranes]. 2002, no. 16, pp. 10—16.
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  6. Maslennikov V.A., Osadchiy Yu.P., Markelov A.V. Obosnovanie periodichnosti tekhnicheskikh obsluzhivaniy fil’tratsionnykh ustanovok pri izmenenii propusknoy sposobnosti rabochikh elementov [Substantiation of Periodicity of Maintenance of Filtration Units Caused by Alterations of the Throughput of Operating Elements]. Auezovskie chteniya — 10: «20-letniy rubezh: innovatsionnye napravleniya razvitiya nauki, obrazovaniya i kul’tury» [The Auezov Readings — 10: the 20th Boundary. Innovative Trends in Development of Research, Education and Culture]. Works of the International scientific and practical conference. South Kazakh State University, Shymkent, Kazakhstan, 2011, pp. 70—72.

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