方钢管地聚物砖骨料再生混凝土长柱的机理分析  

Mechanism Analysis of Geopolymeric Brick Recycled Aggregate Concrete-filled Square Steel Tubular Slender Columns

作　　者：刘宪成 周华 蓝明强 颜桂云[1] 李宏伟 黄周锋 Liu Xiancheng;Zhou Hua;Lan Mingqiang;Yan Guiyun;Li Hongwei;Huang Zhoufeng(Fujian University of Engineering,Fuzhou,China;Haotian Construction Engineering Group Co.,Ltd.,Changsha,China;Longteng Construction Group Co.,Ltd.,Zhangzhou,China;Yusheng(Xiamen)Construction Co.,Ltd.,Xiamen,China;Fujian Tongde Construction Group Co.,Ltd.,Xiamen,China)

机构地区：[1]福建工程学院,福建福州 [2]浩天建工集团有限公司,湖南长沙 [3]龙腾建设集团有限公司,福建漳州 [4]与晟(厦门)建设有限公司,福建厦门 [5]福建同得建工集团有限公司,福建厦门

出　　处：《科学技术创新》2023年第15期179-182,共4页Scientific and Technological Innovation

基　　金：福建省建设厅科技研究开发计划项目(项目编号:2022-K-195)。

摘　　要：结合方钢管地聚物砖骨料再生混凝土长柱(GBARC-FSSTS)的轴压试验,文章建立了GBARCFSSTS的有限元分析模型,并通过模拟结果与试验结果的对比验证模型的可靠性,以探究不同长细比下构件的全过程受力机理分析。结果表明所建有限元模拟结果与试验结果吻合较好,可较好预测构件轴压荷载下的力学行为和破坏模态。修正后的混凝土本构模型可更好反映出再生砖骨料对钢管混凝土长柱下降段的性能退化特点。长细比对试件挠曲具有明显的影响,较大的长细比导致长柱更容易发生侧向挠曲。Based on the axial compressive tests of geopolymeric brick aggregate recycled concrete-filled steel tubular slender column(GBARC-FSSTS),a finite element analysismodel for the GBARC-FSSTS was established.The numerical results were compared with test results to validate the reliability and then the full-range mechanism analysis under different slenderness was conducted..The outcome demonstrated that the results obtained from the established FEA model agreed well with test results,and the FEA model could be used to predict the mechanical behavior and failure modes under axial compression.The modified concrete constitutive model could better reflect the degradation characteristics of GBARC-FSSTS.The slenderness ratio imposed an obvious influence on the lateral deflection,and the specimens were more prone to laterally deformed undera larger slenderness ratio.

关 键 词：地聚物砖骨料再生混凝土 方钢管混凝土长柱 长细比 有限元分析 全过程受力机理分析 

分 类 号：TU352.1[建筑科学—结构工程]