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Bearing capacity of an eccentric tubular concrete-filled steel bridge pier

  • Sui, Weining (School of civil engineering, Shenyang Jianzhu University) ;
  • Cheng, Haobo (Traffic Engineering College, Shenyang Jianzhu University) ;
  • Wang, Zhanfei (Traffic Engineering College, Shenyang Jianzhu University)
  • Received : 2017.07.06
  • Accepted : 2018.03.04
  • Published : 2018.05.10

Abstract

In this paper, the bearing capacity of a non-eccentric and eccentric tubular, concrete-filled, steel bridge pier was studied through the finite element method. Firstly, to verify the validity of the numerical analysis, the finite element analysis of four steel tube columns with concrete in-fill was carried out under eccentric loading and horizontal cyclic loading. The analytical results were compared with experimental data. Secondly, the effects of the eccentricity of the vertical loading on the seismic performance of these eccentrically loaded steel tubular bridge piers were considered. According to the simulated results, with increasing eccentricity ratio, the bearing capacity on the eccentric side of a steel tubular bridge pier (with concrete in-fill) is greatly reduced, while the capacity on the opposite side is improved. Moreover, an empirical formula was proposed to describe the bearing capacity of such bridge piers under non-eccentric and eccentric load. This will provide theoretical evidence for the seismic design of the eccentrically loaded steel tubular bridge piers with concrete in-fill.

Acknowledgement

Supported by : Education Department of Liaoning Province, Shenyang Jianzhu University

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