А study of the action of many repeated loads on the opening width of inclined cracks reinforced concrete flexural elements of constructions and buildings of military assignment
Abstract
Purpose: Study of the action of many cyclic loads on the width of inclined cracks of flexural elements, which are made of concrete on carbonate sand.
Method: the methods of theoretical - experimental.
Findings: As a result of the experiment, statistical models were obtained that allow us to evaluate the influence of each independent parameter and obtain information about the nature of the polynomials of the investigated phenomenon. To solve the problems of assessing the stress-strain state of reinforced concrete structures of buildings, it is advisable to use mathematical modeling, which gives a clear assessment of the quantitative influence of individual factors and their interaction.
Theoretical implications: Ensuring the durability and operational reliability of reinforced concrete structures on inclined sections can be achieved by studying and researching the crack resistance of the support zone of the beams depending on various factors.
Practical implications: During operation, elements of reinforced concrete structures of military purpose are subjected to many repeated loads, which were calculated for static load. Such structures include: overpasses, on which military equipment is repaired; bridges on tank tracks; road slabs on which tanks and wheeled military equipment pass; crane beams in boxes where military equipment is repaired; slabs of collectors, risers of wind generators, military buildings, etc. Calculation of transverse forces and bending moments in the design of reinforced concrete structures is one of the main ones.
Value: The article examines experimental data on the study of the operation of reinforced concrete structures under the action of many repeated loads. In cross-sections of structures, in addition to normal ones, there are also inclined cracks that lead to fatigue failure, and the need for reinforced concrete structures that include various types of concrete and reinforcement is very necessary.
Future research: Due to the fact that cyclic loads occur frequently and act on elements of reinforced concrete structures, their influence on mechanical and deformation parameters requires a thorough study.
Paper type: Theoretical – experimental.
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References
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