Numerical simulation of the interaction of a fiberglass anchor with concrete
https://doi.org/10.52170/1815-9265_2022_60_117
Abstract
Reinforced concrete is the main structural material in modern construction. It is distinguished by a number of properties and features that must be taken into account for the reliable and high-quality design of various structures and structures. Currently, in the construction market, in addition to traditional steel reinforcement, nonmetallic (composite) reinforcement has become widespread. Low modulus of elasticity, high tensile strength, no corrosion (unlike steel reinforcement), low thermal conductivity, which excludes cold bridges in stone structures, determine the effectiveness of the use of non-metallic reinforcement in stone and concrete structures. It should be noted that non-metallic reinforcement is becoming an alternative to steel due to a significant increase in metal prices. Therefore, the design of fiberglass reinforcement in the form of short rods with reinforcement at the ends as flexible links installed between the layers of prefabricated wall panels is relevant.
The article presents data from experimental studies of the compliance of a lumped anchor made of fiberglass reinforcement when it is pulled out of small-sized samples made of heavy and lightweight concrete. On the basis of experimental data, a numerical calculation of the crack resistance of a fiberglass anchor working for pulling out is given. To do this, a computational area in the form of a cylinder is selected from the concrete medium at the contact of the concentrated anchor. On the inner surface, which copies the profile of a concentrated fiberglass anchor, the conditions necessary to take into account the joint operation of the anchor and the concrete tile are set. The calculation performed by the finite element method makes it possible to simulate the development of cracks starting at the anchor protrusions and to determine the stress-strain state of the tile concrete under cracking conditions.
The results of the study are supposed to be used in the design of three-layer wall panels with flexible fiberglass ties.
About the Authors
Yи. V. Astakhov
Siberian Transport University
Russian Federation
Russian Federation
Yury V. Astakhov – Candidate of Engineering, Associate Professor of the Buildings, Building Structures and Materials Department
Novosibirsk
N. S. Pichkurova
Siberian Transport University
Russian Federation
Russian Federation
Natalia S. Pichkurova – Candidate of Engineering, Associate Professor of the Buildings, Building Structures and Materials Department
Novosibirsk
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Review
For citations:
Astakhov Y.V., Pichkurova N.S. Numerical simulation of the interaction of a fiberglass anchor with concrete. Bulletin of Siberian State University of Transport. 2022;(1):117-123. (In Russ.) https://doi.org/10.52170/1815-9265_2022_60_117
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