DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

INFLUENCE OF CORROSION ON ENERGY DISSIPATION UNDER DEFORMATION

Vestnik MGSU 9/2016
  • Larionov Evgeniy Alekseevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Department of Advanced Mathematics, 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 26-34

Corrosive actions generate degradation of the bearing capacity of reinforced concrete elements of buildings and structures during their operation. Chemical corrosion occupies significant place among this actions. As a result of chemical reactions we evidence the change of mechanical characteristics of concrete and steel. In this paper the investigation of the problem is based on rheological equation of concrete state. In case of one-side contact of concrete with the environment layerwise chemical corrosive damages were educes. The author estimated the influence rate of chemical corrosive damages of concrete on its resistance. The dissipation of energy in compressed zone of corrosive-damaged beam is estimated. This estimation is related to the logarithmic decrement of damping under corrosional damages. The author considers. In the process of resistance of a structural element with a degrading module of total deformations equilibrium is only possible in case of increasing deformations and flexures. Account for this fact is important in the estimation of bearing capacity with the help of deformation criteria.

DOI: 10.22227/1997-0935.2016.9.26-34

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COAST PROTECTION STRUCTURES WITH A WAVEDISSIPATION CHAMBERS

Vestnik MGSU 4/2013
  • Baadzhi Vladimir Georgievich - Odessa State Academy of Civil Engineering and Architecture (OGASA) postgraduate student, Department of Construction of Energy Engineering and Water Engineering Structures, Odessa State Academy of Civil Engineering and Architecture (OGASA), 4 Didrikhsona st., Odessa, 65029, Ukraine; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Rogachko Stanislav Ivanovich - Odessa State Academy of Civil Engineering and Architecture (OGASA) Doctor of Technical Sciences, Professor, Department of Construction of Energy Engineering and Water Engineering Structures, Odessa State Academy of Civil Engineering and Architecture (OGASA), 4 Didrikhsona st., Odessa, 65029, Ukraine; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shun’ko Natal’ya Vladimirovna - Moscow State University of Civil Engineering (MGSU) Director, Laboratory of Research Laboratory of Marine Oilfield Structures, 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 137-142

Presently, many coast protection structures built in the 20th century along the coastline of the Black and Azov seas are in the emergency state. The pre-set term of their service life has expired, as they were designed to withhold substantial storm loads occurring every 25 years. These structures were repeatedly exposed to design storm loads. Besides, during severe winters, they were exposed to ice loads. Passive coast protection structures designated for protection of areas accommodating industrial and civil buildings close to the shoreline need urgent restructuring.New design of a passive coast protection structure is presented in this paper in detail. The proposed structure can efficiently resist both the load of sea waves and ice in rare severe winters. Thus, this structural solution can reliably protect areas accommodating industrial and civil buildings close to the shoreline.Currently, artificial islands are used to extract hydrocarbons from sea deposits in the shallow waters of the continental shelf. New passive coast protection structures can be used to protect slopes of artificial islands and earth dams from waves and ice.

DOI: 10.22227/1997-0935.2013.4.137-142

References
  1. Mangor Karsten. Shoreline Management Guidelines. DHI Water and Environment, 2004, 294 p.
  2. Rogachko S.I., Baadzhi V.G. Patent na izobretenie UA ¹ 98645 UA MPK (2012) E02V 3/04 «Beregozashchitnoe sooruzhenie» [Patent for an Invention UA ¹98645 UA MPK (2012) E02V 3/04 Coast Protection Structure].
  3. Rogachko S.I. Beregozashchitnoe sooruzhenie. Avtorskoe svidetel’stvo ¹ 776109 ot 07.07.1980. Byulleten’ ¹ 40. Otkrytiya, izobreteniya i tovarnye znaki. [Coast Protection Structure. Authorship Certificate no. 776109 of 07.07.1980. Bulletin no. 40. Discoveries, Inventions and Trademarks]. Moscow, 1980.

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