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    Experimental and numerical investigations on the seismic behavior of bridge piers with vertical unbonded prestressing strands

    236436_236436.pdf (2.149Mb)
    Access Status
    Open access
    Authors
    Sun, Z.
    Wang, D.
    Bi, Kaiming
    Si, B.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Sun, Z. and Wang, D. and Bi, K. and Si, B. 2015. Experimental and numerical investigations on the seismic behavior of bridge piers with vertical unbonded prestressing strands. Bulletin of Earthquake Engineering. 14 (2): pp. 501-527.
    Source Title
    Bulletin of Earthquake Engineering
    DOI
    10.1007/s10518-015-9840-0
    ISSN
    1570-761X
    School
    Department of Civil Engineering
    Remarks

    The final publication is available at Springer via http://doi.org/10.1007/s10518-015-9840-0

    URI
    http://hdl.handle.net/20.500.11937/25895
    Collection
    • Curtin Research Publications
    Abstract

    In the performance-based seismic bridge design, piers are expected to undergo large inelastic deformations during severe earthquakes, which in turn can result in large residual drift and concrete crack in the bridge piers. In this paper, longitudinal unbonded prestressing strands are used to minimize residual drift and residual concrete crack width in reinforced concrete (RC) bridge piers. Seven pier specimens were designed and tested quasi-statically and the numerical simulations were carried out. The effectiveness of using vertical unbonded prestressing strands to mitigate the residual drift and concrete crack width of RC bridge piers are examined and discussed in detail. It is found that the residual drift and residual concrete crack width of the piers can be reduced significantly by using the prestressing strands. Moreover, the strands can increase the lateral strength of the piers while have little influence on the ductility capacity of the piers. The hysteretic curves, residual drifts and strand stress of the piers predicted by the numerical model agree well with the testing data and can be used to assess the cyclic behavior of the piers.

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