PSI - Issue 81

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ScienceDirect

Procedia Structural Integrity 81 (2026) 396–400

© 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Abstract One of the effective structural designs for civil defense buildings is a combination of structural elements assembled from prefabricated elements in the form of double-hinged arches made of high-strength concrete. The use of high-strength concrete significantly reduces the volume of concrete, and therefore the weight of structures, and reduces the consumption of reinforcing steel in reinforced concrete structures. This type of heavy concrete significantly reduces construction time and increases the strength and reliability of structures and buildings as a whole. At the same time, there is a need to study the development and nature of deflections of reinforced concrete arches made of high-strength concrete under the action of static one-time loads. This will allow for a more accurate assessment of the stress-strain state of reinforced concrete structural elements made of such concrete, increase the reliability of design, and achieve significant economic benefits in the construction of buildings and structures, which is a pressing issue today. 1. Introduction Due to their architectural appeal, high load-bearing capacity and suitability for normal operation, as well as relatively easy installation, reinforced concrete arch structures are widely used in industrial and civil construction, as well as in the construction of special buildings and structures (Karavan (2021a)). In conditions of martial law, there is also a need to construct defensive (fortification) structures as quickly as possible, which can be achieved by introducing high-strength fast-setting concretes into the technological process, which make it possible to significantly increase the pace of construction and, accordingly, reduce the time required to erect buildings and structures (Babych et al. (2021), Karavan (2021b)). The use of high-strength concretes allows for a significant reduction in the volume of concrete, and therefore in the weight of structures, and a reduction in the consumption of reinforcing steel in reinforced concrete structures. VIII International Conference “In - service Damage of Materials: Diagnostics and Prediction“ (DMDP 2025) Study of Deflections in Reinforced Concrete Double-Hinged Arches Made of High-Strength Concrete Under Static Loads Bohdan Karavan*, Serhii Filipchuk, Viktor Karavan National University of Water and Environmental Engineering, Soborna 11, 33000 Rivne, Ukraine Peer-review under responsibility of DMDP 2025 organizers Keywords: reinforced concrete; arches; load; tightening;destruction

* Corresponding author. Tel.: +380-96-401-5296. E-mail address: b.v.karavan@nuwm.edu.ua

2452-3216 © 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2025 organizers 10.1016/j.prostr.2026.03.068