СOMPUTATIONAL MODEL OF PILE FOUNDATIONS WITH ACCOUNTFOR THE EFFECT OF THEIR INTERACTION WITH THE SOIL MEDIA

Vestnik MGSU 4/2012
  • Sargsyan Akop Egishovich - Design and Development Institute, Joint Stock Company (JSC AEP) Candidate of Technical Sciences, Professor, Head of Department of Dynamics and Earthquake Resistance, Atomenergoproekt Research, Design and Development Institute, Joint Stock Company (JSC AEP), 7 Bakuninskaya st., Moscow, 105005, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Gerashchenko Vitaliy Sergeevich - Joint Stock Company (JSC AEP) engineer, Atomenergoproekt Research, Design and Development Institute, Joint Stock Company (JSC AEP), 7 Bakuninskaya st., Moscow, 105005, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shaposhnikov Nikolay Nikolaevich - Moscow State University of Roads (MSUCE) Doctor of Technical Sciences, Associate Member of the Russian Academy of Architectural and Civil Engineering Sciences, Professor, Department of Systems of Computer-Aided Design of Transportation Structures and Constructions 8 (903) 786-53-64, Moscow State University of Roads (MSUCE), Office 7720, 2 Minaevskiy pereulok, Moscow, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 69 - 72

The authors of the paper present computational models of pile foundations with account for the effect of their interaction with the soil media, as well as the design parameters of integral stiffness of the soil environment contacting the pile sole surface that has round or rectangular caps.
The authors' assumptions that serve as the basis for the identification of the integrated response of the soil media to the contact surface of the pile are as follows:
there is no full soil-to-pile contact whenever tensile stresses are formed on the walls of the side surface of a pile, as the soil does not work in tension;
in the course of the vertical travel of piles along their longitudinal axis over the perimeter of their side surface, soils are subjected to simple shear, whereas the pile sole is subjected to compression;
in the course of the travel of piles having rectangular cross sections in the horizontal direction in the soil media, soil shear is formed in the two opposite side surfaces. The front wall of the side surface is subjected to compression in the direction of the pile travel, while soil is separated from the opposite side surface of the pile shaft;
the pile travel in the horizontal direction causes simple shear of the pile sole.

DOI: 10.22227/1997-0935.2012.4.69 - 72

References
  1. Sargsyan A.E., Gerashchenko V.S. Razrabotka staticheskoy i dinamicheskoy raschetnoy modeli svaynykh fundamentov s uchetom effekta ikh vzaimodeystviya s gruntovoy sredoy [Development of Static and Dynamic Computational Model of Pile Foundations with Account for the Effect of Their Interaction with the Soil Environment]. Vestnik CNIISK V.A. Kucherenko [Journal of Central Scientific Research Institute for Building Structures named after V.A. Koucherenko], Moscow, 2010.
  2. SP 50-102—2003. Proektirovanie i ustrojstvo svajnyh fundamentov [Construction Rules 50-102-2003. Design and Construction of Pile Foundations]. Moscow, Federal State Unitary Enterprise “Center for Design Products in the Construction Industry”, 2004, 83 р.

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EXPERIENCE OF DESIGNING AND TESTING STRENGTHENED JOINTS OF SUPPORT OF CAST-IN-SITU REINFORCED CONCRETE FLAT SLABS ONTO COLUMNS

Vestnik MGSU 1/2018 Volume 13
  • Lyudkovskiy Andrey Mikhailovich - Scientific Technical Center “Rekonstruktsiya” Candidate of Technical Sciences, Director, Scientific Technical Center “Rekonstruktsiya”, 1 Avtozavodskaya str., Moscow, 115280, Russian Federation.
  • Sokolov Boris Sergeevich - AO Scientific Research Center “Stroitel’stvo” Candidate of Technical Sciences, Honorable Builder of the Russian Federation, Head of Laboratory, Research and Design Institute for Concrete and Reinforced Concrete named after A.A. Gvozdev (NIIZhB named after A.A. Gvozdev), AO Scientific Research Center “Stroitel’stvo”, 6 2nd Institutskaya str., Moscow, 109428, Russian Federation.

Pages 33-43

Subject: in this paper, the results of some tests are presented for two variants of strengthened joints of support of reinforced concrete flat slabs onto columns with the arrangement of capitals on the upper surface of the flat slab. Research objectives: the tests were conducted to confirm the rationality and reliability of the design solutions of reinforcement. Materials and methods: the tests were performed by loading selected joints of reinforced concrete building’s frameworks under construction conditions. The joints were strengthened by reinforced concrete capitals or in combination with the steel girdle. Results: the experimental data on the response of joints under study was obtained. The analysis of the stress-strain state of the joints was carried out. Practical advantages and disadvantages of such joints were described.

DOI: 10.22227/1997-0935.2018.1.33-43

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