Finite element analyses and design of post-tensioned anchorage zone in ultra-high-performance concrete beams

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This article presents analyses and the design of a post-tensioned anchorage zone made of ultra-high-performance concretes with three-dimensional finite element analyses. The structural behavior was investigated through the failure modes and cracking patterns to show the anchorage zone resistance enhancement with an increase of the strength in concrete. Since the anchorage failure is usually initiated from the local zone in the case of ultra-high-performance concrete beams that have compressive strength of more than 80 MPa, the placement of reinforcements can effectively be used to enhance the strength and ductility for the local zone. However, ultra-high-performance concrete requires a smaller amount of reinforcement than normal-strength concrete. Parametric analyses are carried out to show the effect of the spiral reinforcement on the strength of the anchorage zone, and comparison with the design guidelines in NCHRP Report 356 is made. Finally, improved guidelines are suggested to cover the design of ultra-high-performance concrete.
Publisher
SAGE PUBLICATIONS INC
Issue Date
2019-01
Language
English
Article Type
Article
Citation

ADVANCES IN STRUCTURAL ENGINEERING, v.22, no.2, pp.323 - 336

ISSN
1369-4332
DOI
10.1177/1369433218787727
URI
http://hdl.handle.net/10203/250410
Appears in Collection
CE-Journal Papers(저널논문)
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