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Redundant structures fixed with concrete fasteners

Title: Redundant structures fixed with concrete fasteners
Author(s): M. R÷▀le, R. Eligehausen
Paper category : conference
Book title: International Symposium on Connections between Steel and Concrete
Editor(s): R. Eligehausen
Print-ISBN: 2-912143-25-X
e-ISBN: 2351580346
Publisher: RILEM Publications SARL
Publication year: 2001
Pages: 877 - 888
Total Pages: 12
Nb references: 9
Language: English

Abstract: Concrete fasteners providing redundant fixture for structures will be covered in the future by ETAG, Part 6. The requirements for anchors for these applications should be less strict than for anchors used to fasten statically determinant attachments. The logic behind this is that failure of a single anchorage in a redundantly supported structure will normally not cause complete structural failure, as long as load transfer to neighboring anchors is possible. The probability of failure of redundant structures fixed with fasteners according to ETAG, Part 6 should be in the same range as statically determinant structures fixed with fasteners according to ETAG, Part 1. The failure of anchors is significantly influenced by the presence of cracks in concrete and in particular their widths. Anchors designed according to ETAG, Part 6 may fail if they are located in a wide crack. Therefore, to ensure that a structural system behaves in a redundant way, the degree of utilization of the admissible bending stress and deflection of the attachment must be relatively small in the intact state (i.e. the state where no anchor failure has occured). Finally, requirements for the behavior of anchors in redundant use are shown in Chapter 4.

Online publication: 2009-12-31
Publication type : full_text
Public price (Euros): 0.00

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