PROPOSALS FOR CHANGING THE LOAD ON BRIDGES
Introduction. Bridge DBN V.1.2-15:2009 «Loadings and impacts» is the document that raised the level of calculated traffic loadings on bridges and bring their values closer to the values of LM1 model of Eurocodes. But the characteristic loadings were remained at the old level, which violated the prin...
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| Format: | Article |
| Language: | English |
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M.P. Shulgin State Road Research Institute
2023-04-01
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| Series: | Дороги і мости |
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| Online Access: | http://dorogimosti.org.ua/files/upload/189-198_Korniev.pdf |
| Summary: | Introduction. Bridge DBN V.1.2-15:2009 «Loadings and impacts» is the document that raised the level of calculated traffic loadings on bridges and bring their values closer to the values of LM1 model of Eurocodes. But the characteristic loadings were remained at the old level, which violated the principles of reliability calculations, according to which the characteristic loadings should deviate from the average values by 5 standards at least.
Problem statement. Estimated vehicle loadings of the AK model in DBN B.1.2-15:2009 in compare with LM1 model of Eurocode EN 1991-2 and the track model according to US AASHTO LRFD standards shows that there is a certain balance between them. The calculated loading according to the standards of Ukraine occupies an intermediate position between the standards of Europe and the United States. However, the level of characteristic loadings is almost twice lower in compare with in Eurocode. This is a significant drawback of DBN, because it reduces the level of reliability of calculations based on the second group of limit states. |
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| ISSN: | 2524-0994 2786-488X |