Seismic design and performance of ultra-high performance concrete bridge bents

Author(s) : M. A. Moustafa, C. D. Joe, K. L. Ryan
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. ResplendinoT.Ch.
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 655 - 664
Total Pages : 10
Language : English

Abstract: This study aims at exploring the extended use of UHPC to entirely replace conventional concrete in a typical highway bridge multi-column bent. Four different UHPC mix designs of varying mechanical properties were considered to preliminarily design a two-column bent using current analytical tools (OpenSees) and following standard design guidelines. The objective of the design was to optimize UHPC cross-sections to reproduce similar column and bent cap beam capacities as obtained from conventional concrete. Sectional analysis was used for design optimization. Nonlinear lateral pushover and time history analyses were used to perform seismic capacity checks and compare the seismic performance of UHPC multi-column bents to conventional concrete structures. While UHPC bents are expected to have a better durability and longer service life, the results of this study show that UHPC bents can have much more compact cross-sections for a structural and seismic response comparable to conventional concrete bridge bents.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00