Evaluation of the effectiveness of the use of composite materials in span structures of bridges
| Jazyk: | ruština |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.18720/spbpu/3/2023/vr/vr23-50 |
| Popis: | Тема вÑпÑÑкной квалиÑикаÑионной ÑабоÑÑ: «ÐÑенка ÑÑÑекÑивноÑÑи пÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑнÑÑ Ð¼Ð°ÑеÑиалов в пÑолеÑнÑÑ ÑÑÑоениÑÑ Ð¼Ð¾ÑÑов». РабоÑа поÑвÑÑена обоÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ñ ÑелеÑообÑазноÑÑи пÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸Ñной аÑмаÑÑÑÑ Ð² пÑолеÑнÑÑ ÑÑÑоениÑÑ Ð² ÑÑавнении Ñ Ð¼ÐµÑаллиÑеÑкой аÑмаÑÑÑой.Ð¦ÐµÐ»Ñ Ð¸ÑÑледованиÑ. ÐÑенка ÑÑÑекÑивноÑÑи пÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑнÑÑ Ð¼Ð°ÑеÑиалов в ÑоÑÑаве железобеÑоннÑÑ ÐºÐ¾Ð½ÑÑÑÑкÑий пÑолеÑнÑÑ ÑÑÑоений.ÐадаÑи иÑÑледованиÑ:1. ÐÐ±Ð·Ð¾Ñ Ð¸ анализ ÑезÑлÑÑаÑов иÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑнÑÑ Ð¼Ð°ÑеÑиалов и конÑÑÑÑкÑий моÑÑов оÑеÑеÑÑвеннÑÑ Ð¸ заÑÑбежнÑÑ Ð°Ð²ÑоÑов;2. ÐÑполниÑÑ ÑкÑпеÑименÑалÑное иÑÑледование обÑазÑов на изгиб Ð¾Ñ ÑавномеÑно ÑаÑпÑеделÑнной нагÑÑзки по плоÑади аÑмиÑованнÑÑ ÑазлиÑной аÑмаÑÑÑой.3. ÐÑоизвеÑÑи анализ напÑÑженно-деÑоÑмиÑованного ÑоÑÑоÑÐ½Ð¸Ñ Ð¿ÑолеÑного ÑÑÑÐ¾ÐµÐ½Ð¸Ñ Ð² ÐÐ ÐиÑа-СÐÐÐ Ð´Ð»Ñ Ð¿Ð¾Ð´Ð±Ð¾Ñа аÑмиÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ оÑенки ÑÑÑекÑивноÑÑи иÑполÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸Ñной аÑмаÑÑÑÑ;РпÑоÑеÑÑе подгоÑовки к ÑкÑпеÑименÑÑ Ð½Ð°Ð¼Ð¸ бÑли пÑоанализиÑованнÑе оÑновнÑе Ñизико-Ð¼ÐµÑ Ð°Ð½Ð¸ÑеÑкие ÑвойÑÑва ÑÑеклоплаÑÑиковой аÑмаÑÑÑÑ, ее положение на ÑÑÑоиÑелÑном ÑÑнке, вÑе пÑеимÑÑеÑÑва и недоÑÑаÑки. ÐÑоизвели ÑÑавнение Ñо ÑÑалÑной аÑмаÑÑÑой и пÑиÑли к некоÑоÑÑм вÑводам, коÑоÑÑе поÑом подÑвеÑдили Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÑаÑÑеÑов и ÑкÑпеÑименÑа.ÐÑоизведен анализ напÑÑженно-деÑоÑмиÑованного ÑоÑÑоÑÐ½Ð¸Ñ Ð½ÐµÑÑÑÐ¸Ñ ÐºÐ¾Ð½ÑÑÑÑкÑий ÑÑагменÑа пÑолеÑного ÑÑÑÐ¾ÐµÐ½Ð¸Ñ Ð² ÐÐ ÐиÑа-СÐÐÐ . С помоÑÑÑ ÐРвÑбÑали нÑжнÑÑ Ð°ÑмаÑÑÑÑ, подÑÑиÑали Ð½ÐµÐ¾Ð±Ñ Ð¾Ð´Ð¸Ð¼Ð¾Ðµ колиÑеÑÑво и ÑÑавнили ÑÑоимоÑÑÑ Ð¸ Ð²ÐµÑ Ð¿Ñи иÑполÑзовании ÑÑалÑной и ÑÑеклоплаÑÑиковой.ÐкÑпеÑименÑалÑÐ½Ð°Ñ ÑаÑÑÑ Ð±Ñла пÑоведена в лабоÑаÑоÑии, где Ð¼Ñ Ð¸ÑпÑÑали опÑÑнÑе обÑазÑÑ Ð½Ð° изгиб Ð¾Ñ ÑавномеÑно ÑаÑпÑеделенной нагÑÑзки. ÐбÑазÑÑ Ð¿ÑедÑÑавлÑли Ñобой ÑаÑÑÑ Ð¿ÑолеÑного ÑÑÑÐ¾ÐµÐ½Ð¸Ñ Ñо ÑÑалÑной, ÑÑеклоплаÑÑиковой и базалÑÑоплаÑÑиковой аÑмаÑÑÑой.Ð ÑезÑлÑÑаÑе ÑабоÑÑ Ð¼Ð¾Ð¶Ð½Ð¾ ÑделаÑÑ Ð²Ñвод, ÑÑо пÑименение композиÑной аÑмаÑÑÑÑ Ð²Ð¾ вÑоÑоÑÑепеннÑÑ ÑлеменÑÐ°Ñ , а именно в ÑлеменÑÐ°Ñ Ð¿Ð¾ÐºÑÑÑÐ¸Ñ Ñ Ð½ÐµÐ±Ð¾Ð»ÑÑим пÑолеÑом возможно и Ð¼Ð¾Ð¶ÐµÑ ÑокÑаÑиÑÑ Ð·Ð°ÑÑаÑÑ Ð½Ð° Ð¸Ñ Ð°ÑмиÑование. The theme of the final qualification work: "Evaluation of the effectiveness of the use of composite materials in span structures of bridges." The work is devoted to substantiating the expediency of using composite reinforcement in span structures in comparison with metal reinforcement.Purpose of the study. Evaluation of the effectiveness of the use of composite materials in the composition of reinforced concrete span structures.Research objectives:1. Review and analysis of the results of the study of composite materials and bridge structures by domestic and foreign authors.2. Perform an experimental study of samples for bending from a uniformly distributed load over the area reinforced with various reinforcement.3. To analyze the stress-strain state of the span structure in the Lira-SAPR software to select reinforcement and evaluate the effectiveness of the use of composite reinforcement.In the process of preparing for the experiment, we analyzed the main physical and mechanical properties of fiberglass reinforcement, its position in the construction market, all the advantages and disadvantages. They made a comparison with steel reinforcement and came to some conclusions, which were then confirmed with the help of calculations and experiment.An analysis of the stress-strain state of the load-bearing structures of a span structure fragment was carried out in the Lira-SAPR software. With the help of the software, we chose the necessary reinforcement, calculated the required quantity and compared the cost and weight when using steel and fiberglass.The experimental part was carried out in the laboratory, where we tested prototypes for bending under a uniformly distributed load. The samples were part of a span structure with steel, fiberglass and basalt-plastic reinforcement.As a result of the work, it can be concluded that the use of composite reinforcement in secondary elements, namely in pavement elements with a small span, is possible and can reduce the cost of their reinforcement. |
| Databáze: | OpenAIRE |
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