BEDDINGS AND FOUNDATIONS, SUBTERRANEAN STRUCTURES. SOIL MECHANICS

EXPERIENCE OF TRANSFORMATION OF WEAK WATER-SATURATED SOILS USING PILES OF FINITE STIFFNESS

Vestnik MGSU 3/2018 Volume 13
  • Ter-Martirosyan Zaven Grigor’evich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Science, Professor of the Department of Soil Mechanics and Geotechnics, Main Researcher at the Research and Education Center “Geotechnics”, 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 .
  • Ter-Martirosyan Armen Zavenovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor of the Department of Soil Mechanics and Geotechnics, Head of Research and Education Center “Geotechnics”, 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 .
  • Sidorov Vitaliy Valentinovich - National Research Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Assistant Professor of the Department Soil Mechanics and Geotechnics, Researcher at the Research and Education Center «Geotechnics», National Research 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 271-281

Subject: an analytical solution to the problem of interaction of the pile and the raft plate with the surrounding soil taking into account the possibility of expansion of the pile’s shaft is given. Closed solutions are obtained for determination of stresses in the pile’s shaft and in the soil under the raft plate. We take into account the effect of prestress of the base after compaction on formation of stress-strain state during construction and operation of structures. These solutions are relevant for compaction piles made of crushed stone or soil-cement piles whose stiffness is comparable with the stiffness of the surrounding soil. Research objectives: determination of the average strength and deformation parameters of weak soils subjected to transformation using the piles of finite stiffness made of loose gravel material and soil-cement material; comparative analysis of the obtained results with the data of in situ tests on a construction site. Materials and methods: when solving the problem of interaction between the pile and the surrounding soil with the expansion of pile’s shaft, analytical solutions based on well-known expressions of classical soil mechanics and solid mechanics are used. Experimental studies were carried out on a certified laboratory equipment and with the help of field methods regulated by the existing design codes. Results: the presented technique of improving mechanical parameters of soils and the method of their calculation in the transformed foundation allow us to determine the average characteristics of strength and deformability of the entire foundation. These techniques are necessary for analysis of the transformed foundation by two types of limit states in the process of designing the structure by analytical and numerical methods. Conclusions: the resulting dependencies and the proposed techniques for designing reinforcement of the base with the help of pile-drains are used on real construction sites. We present the results of large-scale tests at the experimental site for construction of a large energy facility in Russia as well as at the housing construction site in the Central region of the Russian Federation.

DOI: 10.22227/1997-0935.2018.3.271-281

Download

CHANGE IN THE LABOR COSTSAT INTEGRATION OF SPECIAL DESIGN NPP

Vestnik MGSU 1/2012
  • Pergamenshchik Boris Klimentjevich - Moscow State University of Civil Engineering (MSUCE) the candidate of tecnics sciences, the associate professor of Construction of Thermal and Nuclear Power Plants +7-(499)-183-25-83, Moscow State University of Civil Engineering (MSUCE), 26, Jaroslavskoe shosse, Moscow, 129337, Russia.
  • Temishev Ruslan Ramzanovich - Moscow State University of Civil Engineering (MSUCE) the candidate of economic sciences, the associate professor of Management and Innovation +7-(964)-795-19-15, Moscow State University of Civil Engineering (MSUCE), 26, Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 138 - 143

The question of changes in labor costs for consolidation of special armometal construction accident. An example is given for assessing the reduction of terms of raising the selected part of the reactor compartment.

DOI: 10.22227/1997-0935.2012.1.138 - 143

References
  1. Berndt A. Opredelenie racional'noj blochnosti konstrukcij reaktornogo otdelenija AJeS s reaktorami VVJeR-1000 [Definition of a rational blocking structures of atomic power stations with PWR-1000 reactors]. Moscow, 1982.
  2. Tolkachev L.A., Koltun O.V., Pavlov A.S., Shishkin, V.V. Analiz metodov sooruzhenija reaktornyh otdelenij AJeS s reaktorami VVJeR-1000 [Analysis methods construction of atomic power stations with PWR-1000]. Jenergeticheskoe stroitel'stvo [Power Construction], no 2, 1989.
  3. Pergamenshchik B.K., Temishev R.R. Metod rascheta trudozatrat pri montazhe konstrukcij AJeS [The method of calculating labor costs for installation design nuclear power plants]. Jenergeticheskoe stroitel'stvo [Power Engineering Construction], no 7, 1989.
  4. Pergamenshchik B.K., Temishev R.R. Ob ocenke jeffektivnosti sooruzhenija reaktornyh otdelenij AJeS VVJeR-1000 [An assessment of the construction of atomic power stations PWR-1000] // Power Construction, ¹ 8, 1989.
  5. Pergamenschik B.K., etc. Zakonomernosti pereraspredelenija trudozatrat pri izmenenii montazhnoj blochnosti AJeS [Regularities of redistribution of labor when the mounting block structure of nuclear power plants]. Organizacionno-jekonomicheskie rezervy intensifikacii stroitel'nogo proizvodstva : mezhvuz. sb. nauch. tr. [Organizational and economic resources for the intensification of construction industry. Interuniversity collection of scientific papers], Moscow, IISS, 1989.
  6. Pergamenshchik B.K., Temishev R.R. Prognozirovanie trudozatrat pri montazhe konstrukcij biologicheskih zawit AJeS [Prediction of labor for installation of structures of biological protection NPP]. Izvestija vuzov. Serija Stroitel'stvo i arhitektura [Proceedings of the college. A series of construction and architecture], no 4, 1990.

Download

Results 1 - 2 of 2