A Damage Control Model for Reinforced Concrete Pier Columns Based on Pre-Damage Tests under Cyclic Reverse Loading  

作　　者：Zhao-Jun Zhang Jing-Shui Zhen Bo-Cheng Li De-Cheng Cai Yang-Yang Du Wen-Wei Wang 

机构地区：[1]Offshore Oil Engineering Co.,Ltd.,Tianjin,300461,China [2]Department of Bridge Engineering,School of Transportation,Southeast University,Nanjing,21189,China

出　　处：《Structural Durability & Health Monitoring》2025年第2期327-346,共20页结构耐久性与健康监测(英文)

基　　金：supported by National Natural Science Foundation of China(Project No.51878156);EPC Innovation Consulting Project for Longkou Nanshan LNG Phase I Receiving Terminal(Z2000LGENT0399).

摘　　要：To mitigate the challenges in managing the damage level of reinforced concrete(RC)pier columns subjected to cyclic reverse loading,this study conducted a series of cyclic reverse tests on RC pier columns.By analyzing the outcomes of destructive testing on various specimens and fine-tuning the results with the aid of the IMK(Ibarra Medina Krawinkler)recovery model,the energy dissipation capacity coefficient of the pier columns were able to be determined.Furthermore,utilizing the calibrated damage model parameters,the damage index for each specimen were calculated.Based on the obtained damage levels,three distinct pre-damage conditions were designed for the pier columns:minor damage,moderate damage,and severe damage.The study then predicted the variations in hysteresis curves and damage indices under cyclic loading conditions.The experimental findings reveal that the displacement at the top of the pier columns can serve as a reliable indicator for controlling the damage level of pier columns post-loading.Moreover,the calibrated damage index model exhibits proficiency in accurately predicting the damage level of RC pier columns under cyclic loading.

关 键 词：Reinforced concrete pier cyclic reverse load pre-damage damage index displacement control 

分 类 号：TU528[建筑科学—建筑技术科学]