基于灰关联熵理论的CFRP-钢管混凝土构件轴压承载力影响因素分析  

Influencing factors analysis on the bearing capacity of concrete filled CFRP-steel tube under axial compression based on grey relation entropy theory

作　　者：孙国帅[1] 顾威[2] 柳春光[3] SUN Guoshuai;GU Wei;LIU Chunguang(Liaoning University of Technology,Jinzhou 121001,China;Liaoning College of Communication,Shenyang 110122,China;Dalian University of Technology,Dalian 116024,China)

机构地区：[1]辽宁工业大学,辽宁锦州121001 [2]辽宁省交通高等专科学校,辽宁沈阳110122 [3]大连理工大学,辽宁大连110624

出　　处：《混凝土》2018年第11期26-28,共3页Concrete

基　　金：国家自然科学基金项目(51678107);辽宁省教育厅基金项目(JW201615406)

摘　　要：针对CFRP-钢管混凝土结构构件轴心受压承载力评价问题,给出了灰关联熵理论的应用步骤,并基于灰关联熵理论,分析了钢管厚度、钢管屈服强度、核心混凝土截面面积以及CFRP厚度等因子对CFRP-钢管混凝土结构构件轴心受压承载力影响的主次关系和影响程度。研究结果表明:灰关联熵理论是一种简单实用的分析方法,可以有效地应用于组合结构的承载力评价;在选取的各影响因子中,核心混凝土的截面积与构件的极限承载力的灰关联熵值最大。研究结果可以为CFRP-钢管混凝土结构构件的理论研究和实践应用提供参考。To evaluate the bearing capacity of concrete filled CFRP-steel tube under axial compression,the application steps of grey relation entropy theory is put forward.Based on the grey relation entropy theory,the primary and secondary relations of various factors,including the thickness and yield strength of steel tube,sectional area of core concrete and thickness of CFRP,influencing the bearing capacity of concrete filled CFRP-steel tube under axial compression is analyzed.The results indicate that the grey relation entropy theory is simple and practical,and can be used to evaluate the bearing capacity of composite structure.And among various factors,the grey relation entropy between the sectional area of core concrete and ultimate bearing capacity of structure is most main factor.Besides,the research results can provide reference for the theoretical study and practical application of concrete filled CFRP-steel tubular structure.

关 键 词：CFRP-钢管混凝土 承载力 灰关联熵 影响因素 

分 类 号：TU528.01[建筑科学—建筑技术科学]