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Effect of Width of RC-Web on Seismic Performance of CFST–RC Pier: Experiments

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Iranian Journal of Science and Technology, Transactions of Civil Engineering Aims and scope Submit manuscript

Abstract

CFST–RC pier is a modified form of CFST latticed column in which the main longitudinal limbs are connected with RC-web instead of steel tube lacings. This type of pier is constructed in tall bridges in seismic prone zones. RC-web increases the stiffness of columns, hence reducing the slenderness ratio for long columns. In this paper, an attempt has been made to obtain seismic performance characteristics of CFST–RC columns with variable widths of RC-web. Three CFST–RC piers with variable widths of RC-web were tested in the laboratory. Cyclic load test was performed to know the seismic behavior of this type of column. Under cyclic loading, the seismic performance of CFST–RC piers, such as failure modes, ductility, load displacement hysteretic curves, energy absorption capacity, strength and stiffness degradation have been studied. The results showed that the lateral load-carrying capacity and energy dissipation capacity of the columns increased with the increase in the width of RC-web, while the ductility decreased. Cracks in the RC-web and the tearing of steel tube at the base of the piers were the main failure modes of the CFST–RC piers.

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Acknowledgements

This research described here was sponsored in part by the National Science Foundation under Grant Nos. 51178118 and 51508104 China. Their support is gratefully acknowledged. The opinions expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsors. The authors would also like to thank Binay Kumar Sah, Pratyush Jha, Nabin Basnet and Subhash Pantha for their assistance.

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Authors and Affiliations

  1. College of Civil Engineering, Fuzhou University, Fuzhou, 350116, Fujian, China

    Raghabendra Yadav, Baochun Chen, Huihui Yuan & Zhibin Lian

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  1. Raghabendra Yadav
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  2. Baochun Chen
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  3. Huihui Yuan
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  4. Zhibin Lian
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Correspondence to Raghabendra Yadav.

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Yadav, R., Chen, B., Yuan, H. et al. Effect of Width of RC-Web on Seismic Performance of CFST–RC Pier: Experiments. Iran J Sci Technol Trans Civ Eng 43, 685–696 (2019). https://doi.org/10.1007/s40996-018-0221-1

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  • DOI: https://doi.org/10.1007/s40996-018-0221-1

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