建筑钢结构进展2025，Vol.27Issue(2)：104-114,11.DOI:10.13969/j.jzgjgjz.20230923001
圆钢管掺镍铁渣再生混凝土柱抗震性能及恢复力模型研究
Seismic Behavior and Hysteretic Model of Recycled Aggregate Concrete with Ferronickel Slag-Filled Circular Steel Tubular Columns
摘要
Abstract
To reuse construction and industrial waste,this study adopted ferronickel slag to partially replace cement and recycled coarse aggregate(RCA)to replace natural aggregate to prepare recycled aggregate concrete with ferronickel slag(RFC).Further,the RFC was filled into the circular steel tube to form the RFC-filled steel tubular(RFCFST)columns.Eleven RFCFST columns were tested under combined axial and cyclic lateral loading.The test variables included the RCA replacement ratio,the axial load ratio,the confinement level,and the shear-span ratio.The test results demonstrated that the failure mode of RFCFST columns was similar to that of CFST columns.The P-Δ effect caused a significant diminution in the lateral load resistance and deformation capacity,especially for columns with a high axial load ratio and high shear-span ratio.The RCA replacement ratio had little effect on the load-carrying capacity,deformability,and energy dissipation of the RFCFST columns.With the increase in axial load ratio,the deformability of the column decreased,but the single-cycle energy dissipation capacity increased.The lateral load-carrying capacity and ductility increased with the increase in confinement level but declined with the increase in shear-span ratio.Based on the test results and theoretical analysis,a lateral load-drift level restoring force model for RFCFST columns was proposed.关键词
再生骨料混凝土/镍铁渣/钢管混凝土/抗震性能/恢复力模型Key words
recycled aggregate concrete/ferronickel slag/concrete filled-steel tube/seismic performance/restoring force model分类
建筑与水利引用本文复制引用
罗才松,许力,陈华艳,付朝江,祁皑..圆钢管掺镍铁渣再生混凝土柱抗震性能及恢复力模型研究[J].建筑钢结构进展,2025,27(2):104-114,11.基金项目
国家自然科学基金(5227080392),福建省自然科学基金(2023J05190),福建理工大学科研启动基金(GY-Z220224) （5227080392）
