Research of technical and economic indicators of reinforcement of reinforced concrete beams by different technologies
DOI:
https://doi.org/10.32347/2707-501x.2020.45.144-153Keywords:
reinforcement of beams, external reinforcement, preparation of the basis, reconstruction, laboriousness, carbon plate, carbon fiber.Abstract
The article presents the results of experimental investigations to determine the destructive force of beams reinforced with external reinforcement and control (without reinforcement). According to the results of such investigations, it can be stated that the strengthening of beam structures by external reinforcement made it possible to increase their bearing capacity by 383.3%. It has been established that both carbon fiber reinforcement using "clamps" and carbon fiber reinforcement are effective.
The performed analytical researches established technical and economic indicators of various methods of reinforcement of beam constructions, namely: the addition of additional supports, the addition of additional beams, the external reinforcement of stretched zones by MAPEI technology. As a result, data were obtained indicating that the reinforcement of the crossbar by bringing additional rigid support requires 110.4 man-hours (100%), the reinforcement of the crossbar by bringing additional beams - 94.4 man-hours (85.5%), the reinforcement of the crossbar by external reinforcement - 48 man-hours (43.5%). In this case, the reinforcement of the crossbar by bringing additional rigid support is performed in 9.7 days (100%), the reinforcement of the crossbar by bringing additional beams - 6 days (62%), the reinforcement of the crossbar by external reinforcement - 4 days (41.4%). It is also established that the reinforcement of the crossbar by bringing additional rigid support costs 51.8 thousand UAH (100%), strengthening the structure by bringing additional beams - 58.1 thousand UAH (112%), strengthening the structure by external reinforcement - 35.72 thousand UAH (68.9%).
The obtained research results indicate that the labor intensity, duration and cost of reinforcing the beam with external reinforcement is lower compared to other technologies.
Efficiency is achieved by a structural component - increasing the bearing capacity without changing the design solution and by technological component - reducing the labor intensity, duration and cost of work.
References
ДСТУ Б В.3.1-2:2016. Ремонт і підсилення несучих і огороджувальних будівельних конструкцій та основ будівель і споруд [Чинний від 2017-04-01]. – Київ: ДП «УкрНДНЦ», 2017. – 72 с.
Шагин А.Л. Реконструкция зданий и сооружений / А.Л. Шагин, Ю.В. Бондаренко, Д.Ф. Гончаренко. – М.: Высш. шк., 1991. – 352 с.
Савйовский В.В. Ремонт и реконструкция гражданских зданий / В.В. Савйовский, О.Н. Болотских. – Х.: Ватерпас, 1999. – 288 с.
Савйовський В.В. Реконструкція будівель і споруд / В.В. Савйовський. – К.: Видавництво Ліра-К, 2018. – 320 с.
Klebearmierung [Електронний ресурс]. – Режим доступу: http://www.diamont-ag.ch.
Mapewrap C UNI-AX. Покрытие углеволоконное высокопрочное однонаправленное. [Електронний ресурс]. – Режим доступу: http://rosmax.com.ua/stroitelnaja-chimija/strukturnoe-usilenie-s-pomoshhyu-sistemy-frp/mapewrap-c-uni-ax
Minnaugh P.L. The experimental behavior of steel fiber reinforced polymer retrofit measures: thesis master of Science / Patrick Lucien Minnaugh; University of Pittsburgh school of engineering. – Pittsburgh, 2006 – 113 p.
Григорова А. Підсилення балочних конструкцій зовнішнім армуванням за технологією “MAPEI” / А. Григорова, І. Повх // International Scientical-Practal Conferencw of young scientists “Build-Master-Class-2018” November 2018, Kyiv, Ukraine - P. 210 – 211.
Гудков П.А. Методы сравнительного анализа. Учеб. Пособие. – Пенза: Изд-во Пеннз. Гос. Ун-та, 2008 – 81 с.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2021 О. Molodid, I. Maksymiuk, A. Hryhorova
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).