J Shanghai Jiaotong Univ Sci ›› 2021, Vol. 26 ›› Issue (6): 794-803.doi: 10.1007/s12204-021-2282-8

• • 上一篇    下一篇

  

  • 收稿日期:2019-12-05 出版日期:2021-11-28 发布日期:2021-12-01
  • 通讯作者: YANG Shuyan1? (杨淑雁), ?E-mail: yangshuyan@nxu.edu.cn

Hysteretic Model for Corroded Rectangular Reinforced Concrete Bridge Column Under Seismic Loading

YANG Shuyan1∗ (杨淑雁), SONG Xiaobing2 (宋晓冰), JIA Hongxue3 (贾红学),CHEN Xi4 (陈溪), LIU Xila2 (刘西拉)   

  1. (1. School of Civil Engineering and Water Conservancy, Ningxia University, Yinchuan 750021, China; 2. Department ofCivil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 3. Engineering Research Institute, ChinaConstruction Eighth Engineering Division Co., Ltd., Shanghai 200122, China; 4.
  • Received:2019-12-05 Online:2021-11-28 Published:2021-12-01

Abstract: Additional hysteretic experiments for corroded rectangular reinforced concrete (RC) columns withan axial load ratio of 0.27 were implemented. A quasi-static cyclic lateral loading with constant axial force wassubjected to tests. Herein, a modified ductility factor model for corroded RC column is developed on the basisof the previous work and additional experiments. The model involves the influence of both the corrosion ratioof longitudinal rebar and the axial load ratio. A four-linear envelope curve model concerning lateral load anddisplacement is proposed in a combination of determination rules of the peak point and the failure strength point.The hysteretic model of corroded RC columns is developed by considering both degraded unloading stiffness andreloading stiffness on the history peak point. The hysteretic model can predict the residual life of corroded RCcolumns under seismic loading.

Key words: hysteretic model, reinforced concrete (RC) column, rebar, corrosion, seismic loading, ductility factor,envelope curve

中图分类号: