Fracture Mechanics of a Three-Layer Wall Panel Based on Two-Stage Concrete

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Abstract

Stress distribution in a three-layer wall panel based on two-stage concrete with rigid contact between the layers is modelled. The calculation is performed in ANSYS Workbench finite-element software. Values of failure criteria (principal stress and equivalent stress) are calculated near stress concentrators, i.e. edges separating the loaded and fixed faces of the panel. It is obtained that fracture begins at the boundary between the loaded and non-loaded layers of the structure. It is shown that the thermal insulation layer made of porous concrete in the center of the panel can carry part of the load acting on the bearing layer. So, structures made using the two-stage technology may withstand loads that are higher compared to that of panels with flexible ties. Moreover, it is shown that thermal resistance of the three-layer two-stage concrete panel is twice as high as for a single-layer panel of the same width. Therefore, the use of two-stage concrete panels is an effective measure for heat conservation in buildings.

About the authors

Alexey O. Syromyasov

National Research Mordovian State University named after N.P. Ogarev

Author for correspondence.
Email: syal1@yandex.ru
ORCID iD: 0000-0001-6520-0204
SPIN-code: 7617-8578

Candidate of Physical and Mathematical Sciences, Associate Professor at the Department of Applied Mathematics

68/1 Bolshevistskaya St, Saransk, 430005, Russian Federation

Yuri A. Makarov

National Research Mordovian State University named after N.P. Ogarev

Email: makarov.yira75@mail.ru
ORCID iD: 0000-0002-6242-4138
SPIN-code: 4679-9363

Candidate of Technical Sciences, Associate Professor at the Department of Applied Mathematics

68/1 Bolshevistskaya St, Saransk, 430005, Russian Federation

Tatiana F. Elchishcheva

Tambov State Technical University

Email: elschevat@mail.ru
ORCID iD: 0000-0002-0241-3808
SPIN-code: 9764-3898

Candidate of Technical Sciences, Head of the Department of Architecture and Urban Planning

106/5 Sovetskaya St, Tambov, 392000, Russian Federation

Vladimir T. Erofeev

National Research Moscow State University of Civil Engineering

Email: erofeevvt@bk.ru
ORCID iD: 0000-0001-8407-8144
SPIN-code: 4425-5045

Doctor of Technical Sciences, Professor at the Department of Construction Materials Science

26 Yaroslavskoye shosse, Moscow, 129337, Russian Federation

Dmitry A. Kozhanov

Nizhny Novgorod State University of Architecture and Civil Engineering

Email: pbk996@mail.ru
ORCID iD: 0000-0002-8443-1291
SPIN-code: 8722-2173

Candidate of Physical and Mathematical Sciences, Associate Professor at the Department of Structural Theory and Technical Mechanics

65 Ilyinskaya St, Nizhny Novgorod, 603000, Russian Federation

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