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• W3080202224 abstract "Temporary bridges are necessary to ensure movement during the construction or repair (reconstruction) of capital bridge structures, operational communication of interrupted tracks in various emergency situations, for one-time or seasonal transport communications. For this purpose, reusable mobile prefabricated structures are advisable. Inventory sets of collapsible bridges were designed and manufactured primarily in the interests of the military department, but are currently widely in demand and are used in the civilian sector of bridge building because of their economy, mobility, and accessibility in transportation. Among others, including modern collapsible bridge designs, the middle automobile collapsible bridge (CAPM), developed in 1968 and modernized in 1982 for the needs of the USSR Ministry of Defense, occupies a special place. In the process of withdrawing the CAPM sets stored in storage to the civilian construction sector, a significant demand for these structures was found to be due to their following advantages: complete staffing with all elements of the bridge, including supports; the possibility of overlapping spans of 18.6, 25.6, 32.6 m with the dimensions of the driving bed 4.2 m for single-track and 7.2 m for double-track passage Passport carrying capacity is designated as 40 tons for single-track passage and 60 tons for double-track passage. Since, according to a number of geometric and technical parameters, CAPM designs do not fully comply with the requirements of modern standards for capital bridges, their application is mainly oriented as temporary. It should be noted that with minor refinement – the installation of modern fences and a double-track transverse arrangement of sections for single-lane traffic, it is possible to achieve compliance with the required geometric parameters of the driving bed and the total lifting capacity for bridges on public roads of IV and V of technical category. The article considers the design feature of the pin mounting joints of sections of a collapsible span as a factor determining the carrying capacity, the nature of general deformations and, as a result, affecting the transport and operational characteristics of the bridge structure. The purpose of this study is to analyze the operation of the pin mounting joints of the sections of the spans of the CAPM with the assessment of the stress state of the elements of the connection node. We consider the novelty in the consideration of the issue to be an assessment of the strength of the elements of the pin joints and its effect on the general deformations – the deflections of the main beams." @default.
• W3080202224 created "2020-09-01" @default.
• W3080202224 creator A5064767261 @default.
• W3080202224 date "2020-06-01" @default.
• W3080202224 modified "2023-09-25" @default.
• W3080202224 title "Influence of mounting joints of sections of a collapsible bridge on his stress-strain state" @default.
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• W3080202224 doi "https://doi.org/10.15862/25sats220" @default.
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