Seismic verification method for thin-walled circular steel bridge piers under bi-directional cyclic loading

Abstract eng:
In this paper, strain based seismic verification method is proposed for hollow circular steel bridge piers subjected to the bi-directional earthquake motions. The elastoplastic analyses are conducted on finite element models with applying bi-directional circular cyclic loading. To catch the nonlinear cyclic behavior of the steel material, the in-house developed two-surface modified material constitutive law is employed. The strain results obtained from parametric study are used to derive failure strain formulas and seismic verification method. Finally, a case study is appended to compare failure strain from previous and present study.

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