1. STRUCTURAL BEHAVIOR OF PRESTRESSED CONCRETE BRIDGE GIRDER WITH EPOXY JOINT.
- Author
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Jalairov, Assylkhan, Kumar, Dauren, Kassymkanova, Khaini-Kamal, Sarsembekova, Zeynep, Nuruldaeva, Gulzhan, and Jangulova, Gulnar
- Subjects
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PRESTRESSED concrete bridges , *CONCRETE beams , *PRESTRESSED concrete beams , *PRESTRESSED concrete , *COMPOSITE construction , *EPOXY resins , *MOTOR vehicles , *GIRDERS - Abstract
The study object is a prototype of a composite bridge prestressed concrete beam with a length of 42.0 m for road bridge desks for perception of impact from motor vehicles in the form of A14, NK-120 and NK-180 loads. The experimental deflection of the beam in the midspan had a value equal to f exp = 62.4 mm at a load of 2Pк = 436 kN, which was 75.2% of the control deflection value. Based on the test results, the girder block joints with "tooth" and "notch" device are found to be imperfect. The experimental load of 2PMAX = 822.7 kN was achieved during the tests, which exceeded the control load equal to 2Pк = 744 kN when checking the strength of the composite beam and the control load equal to 2Pк = 790 kN when checking the strength of No. 1 and No. 2 joints. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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