Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2017-01-01

Journal: ENGINEERING STRUCTURES

Included Journals: EI、SCIE

Volume: 130

Page Number: 52-66

ISSN: 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.