华侨大学学报（自然科学版）2024，Vol.45Issue(2)：166-174,9.DOI:10.11830/ISSN.1000-5013.202403006
节段料石拼接构造对SCFST柱抗震性能影响有限元分析
Finite Element Analysis of Influence of Segment-Stone Splicing Structure on Seismic Performance of SCFST Columns
摘要
Abstract
To study the effect of segment stone splicing structure on the seismic performance of stone prism encased concrete filled steel tube(SCFST)columns,a numerical model of SCFST columns is established by ABAQUS software.Numerical simulation is conducted on 12 specimens under low cyclic loading under differ-ent parameters,such as axial compression ratio,steel tube thickness,stone size and segment stone structure.The results show that the internal packing stone can significantly improve the specimen's initial stiffness,bear-ing capacity and energy dissipation capacity,but reduce the specimen's ductility coefficient.The effects of con-crete strength and axial compression ratio on initial stiffness,peak bearing capacity and energy dissipation ca-pacity are not apparent,but significantly affect the ductility coefficient.With the increase of stone size,the in-itial stiffness is basically unchanged,the peak bearing capacity decreases by 17.8％at most,the ductility coef-ficient of the specimen decreases slightly,the energy dissipation capacity increases significantly.The initial stiffness and peak bearing capacity of the specimens arranged in stone segments are the same as that arranged in stone as a whole,but the ductility coefficient can be decreased 32.7％at most,the bearing capacity of the specimens increases significantlyd when the concrete is filled between the stone segments.关键词
内填料石钢管混凝土柱/节段料石拼接构造/低周反复荷载作用/延性/承载力/耗能能力Key words
stone prism encased concrete-filled steel tube column/segment-stone splicing structure/low cyclic loading/ductility/bearing capacity/energy dissipation capacity分类
建筑与水利引用本文复制引用
杜耀峰,刘杰,苏龙辉,陈业伟,刘阳,黄玉佳..节段料石拼接构造对SCFST柱抗震性能影响有限元分析[J].华侨大学学报（自然科学版）,2024,45(2):166-174,9.基金项目
国家自然科学基金资助项目(52378157) （52378157）
福建省自然科学基金杰出青年基金资助项目(2020J06020) （2020J06020）
福建省科技研究开发计划项目(2022-K-157,2022-K-261) （2022-K-157,2022-K-261）
