Shear capacity tests of PC crane beams in uncertain prestressing tendons anchorage conditions
2022 (English)In: Proceedings of the fib Symposium / [ed] Stokkeland S., Braarud H.C., fib. The International Federation for Structural Concrete , 2022, p. 2045-2054Conference paper, Published paper (Refereed)
Abstract [en]
Research on the shear capacity of posttensioned, precast crane beams after more than 50 years of exploitation is presented in the paper. The tests simulated an emergency situation with the loss of one or two anchorages of the prestressing tendons. Due to the possible varying location of the concentrated force on the crane beams, tests were carried out for different shear span-to-depth ratios. The paper mainly presents experimental testsâ results. Studies have shown that loss of top cable anchorage does not significantly affect the behaviour of beam, but failure of bottom cable anchorage has a significant effect on reducing its shear capacity. The important conclusion is that even under very adverse emergency conditions the elements do not collapse in a brittle manner.
Place, publisher, year, edition, pages
fib. The International Federation for Structural Concrete , 2022. p. 2045-2054
Series
Proceedings of the fib Symposium, E-ISSN 2617-4820
Keywords [en]
Anchorages (foundations), Cables, Concrete beams and girders, Cranes, Failure (mechanical), Prestressing, Shear flow, Anchorage failure, Assessment, Beam tests, Concentrated force, Condition, Emergency situation, Post tensioned, Pre-cast, Prestressing tendon, Shear capacity, Prestressed concrete
National Category
Civil Engineering
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-122825Scopus ID: 2-s2.0-85143904625ISBN: 9782940643158 (electronic)OAI: oai:DiVA.org:lnu-122825DiVA, id: diva2:1776449
Conference
6th fib International Congress on Concrete Innovation for Sustainability 2022, Oslo 12-16 June 2022
2023-06-282023-06-282023-08-17Bibliographically approved