南京工业大学学报（自然科学版）2017，Vol.39Issue(5)：33-38,6.DOI:10.3969/j.issn.1671-7627.2017.05.006
倒角半径对矩形FRP-钢复合管混凝土轴压性能的影响规律
Effect of corner radius on mechanical properties of rectangular FRP-steel composite tubular concrete
摘要
Abstract
Ten specimens with various chamfering radius were tested to investigate the influence of the chamfer radius on the axial compression performance of the rectangular fiber reinforced polymer ( FRP )-steel composite tubular concrete columns.The results show that the local buckling of the steel tube can be effectively suppressed before the FRP fracture,and the lateral confinement of the FRP can improve the mechanical properties of the concrete-filled rectangular steel tube and delay the buckling process. Compared with the concrete-filled steel tube,the FRP may increase the loading bearing capacity.The FRP fracture occurs at the corners in the middle of the rectangular specimens due to the local stress concentration,and increasing the chamfer radius of the corner can improve the stress concentration and weaken the concentration stress of the FRP at the corner,and improve the effect of FRP confinement.With the chamfer radius increases,the rectangular concrete-filled steel or FRP-steel composite tube displays a better mechanical performance.关键词
混凝土结构/柱/纤维增强复合材料/钢管混凝土/FRP-钢复合管/轴压受压Key words
concrete structures/columns/fiber reinforced polymer/concrete-filled steel tube/FRP-steel composite tubes/axial compression分类
建筑与水利引用本文复制引用
魏洋,柴继乐,张希,端茂军,李国芬..倒角半径对矩形FRP-钢复合管混凝土轴压性能的影响规律[J].南京工业大学学报（自然科学版）,2017,39(5):33-38,6.基金项目
国家自然科学基金(51208262,51778300) （51208262,51778300）
江苏省自然科学基金(BK20151520) （BK20151520）
江苏省"333"工程(BRA2016421) （BRA2016421）
江苏省"青蓝工程" （）
江苏高校优势学科建设工程 （）
