Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11658
Title: Incremental dynamic analysis of highway bridges with novel shape memory alloy isolators
Authors: Zhu, S 
Qiu, CX
Keywords: Displacement-based design
Highway bridge
Incremental dynamic analysis
Self-centering base isolator
Shape memory alloy
Issue Date: 2014
Publisher: Multi-Science
Source: Advances in structural engineering, 2014, v. 17, no. 3, p. 429-438 How to cite?
Journal: Advances in structural engineering 
Abstract: Base isolators are commonly used to protect highway bridges from severe seismic damage. A novel self-centering isolator based on superelastic shape memory alloy (SMA) has been proposed to be installed between the piers and decks of highway bridges. This paper systematically evaluates the seismic performance of SMA isolators via the incremental dynamic analysis (IDA) of a prototype highway bridge with SMA isolators. The multi-span reinforced concrete highway bridge and the corresponding SMA isolators are designed according to an ad hoc displacement-based design (DBD) approach. The seismic analyses are conducted under different seismic intensity levels using the computation program DRAIN2DX. IDA results indicate that the SMA isolators can effectively protect the superstructure of the highway bridge and minimize the post-earthquake residual deformation. The properly designed highway bridges with SMA isolators are subjected to limited damage under frequent and design basis earthquakes.
URI: http://hdl.handle.net/10397/11658
ISSN: 1369-4332
EISSN: 2048-4011
DOI: 10.1260/1369-4332.17.3.429
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