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Indexed by:期刊论文

Date of Publication:2017-01-01

Journal:ENGINEERING STRUCTURES

Included Journals:SCIE、EI

Volume:130

Page Number:52-66

ISSN No.:0141-0296

Key Words:Reinforced concrete; Flexure-shear critical column; Hysteretic behavior; Equivalent damping ratio; Seismic design

Abstract:To describe the hysteretic behavior of flexure-shear critical reinforced concrete (RC) columns realistically, a hysteretic loop expression of flexure-shear critical RC columns under complete cyclic loading is proposed by investigating the characteristics of column specimens in PEER- Column Database. For the proposed expression, important characteristics of flexure-shear critical RC columns under cyclic loading, including pinching and stiffness degradation, are covered. And then, an equivalent damping ratio model suitable for flexure-shear critical RC columns is proposed by using the proposed hysteretic loop expression based on the Jacobsen's approach. The relationship between the equivalent damping ratio formula of two-column pier supported bridge and that of its columns is developed based on the energy dissipation capacity. A design example is provided to illustrate the application of the proposed model. (C) 2016 Elsevier Ltd. All rights reserved.