复式钢管混凝土结构研究现状与发展趋势  

Research status and development trend of concrete-filled double steel tube structures

作　　者：赵均海[1] 樊军超 胡壹 张冬芳[1] ZHAO Jun-hai;FAN Jun-chao;HU Yi;ZHANG Dong-fang(School of Civil Engineering,Chang'an University,Xi'an 710061,Shaanxi,China;School of Civil Engineering,Central South University of Forestry and Technology,Changsha 410004,Hunan,China)

机构地区：[1]长安大学建筑工程学院,陕西西安710061 [2]中南林业科技大学土木工程学院,湖南长沙410004

出　　处：《长安大学学报（自然科学版）》2022年第1期1-15,共15页Journal of Chang’an University(Natural Science Edition)

基　　金：国家自然科学基金项目(51878056);陕西省科技计划项目(2019SF-256);中央高校基本科研业务费专项资金项目(300102289105,300102280203)。

摘　　要：随着社会的快速发展,建筑结构日益更新,工程界迫切需要具有更高承载力、刚度和延性等性能的钢管混凝土结构。在传统钢管混凝土内放置单层或多层钢管形成新型钢管混凝土结构——复式钢管混凝土结构,并经大量试验研究结果表明,该类组合结构具有较好的力学性能。为了总结复式钢管混凝土结构的研究现状,从复式钢管混凝土柱、复式钢管混凝土梁柱节点和装配式复式钢管混凝土结构体系三方面进行了分析。多种组合形式的复式钢管混凝土结构的试验研究和有限元分析结果表明:内圆外圆、内圆外方、内方外方等截面形式的复式钢管混凝土结构具有较好的力学性能;空心率、混凝土强度、钢管强度和厚度、内外钢管径长比等是影响复式钢管混凝土结构性能的主要因素。此外,采用不锈钢、波纹管、再生混凝土、橡胶混凝土等材料的复式钢管混凝土结构亦具有可靠的力学性能。应用新型复合型混凝土材料,能够满足环保要求,达到建筑可持续发展。随着相关政策条例的颁布以及社会发展对建筑结构需求的不断变化,关于复式钢管混凝土结构的研究会向着结构多样化、可持续化发展、结构抗火、以及结构装配化方向发展,旨在研发更多具有可靠力学性能,且便于在实际工程中应用的复式钢管混凝土结构。With the rapid development of society,buildings are upgraded constantly.Therefore,it is desired in engineering practice that the concrete-filled steel tube(CFST)structures with higher bearing capacity,stiffness,and ductility.A single-layer steel tube or multi-layer steel tubes were placed in the CFST column concentrically to form a novel CFST structure,which was defined as the concrete-filled double-skin steel tube(CFDST)structures.A large number of experimental results show that the CFDST structures possess better mechanical properties.The research status of the CFDST structures was summarized from three aspects of the CFDST column,the CFDST beam-column joint and the prefabricated CFDST structure system.The results of experiments and finite element analysis about different CFDST structures indicate that the CFDST structures with the cross-sections of the inner circle and outer circle,the inner circle and outer square,and the inner square and outer square own superior properties respectively.Furthermore,the hollow ratio,the strength of concrete,the strength and thickness of steel tube,and the diameter ratio between inner steel tube and outer steel tube and so on are main parameters that affect the performance of the CFDST structures.Moreover,the CFDST structures possess reliable properties of mechanics when the stainless steel tube,the corrugated steel tube,the recycled concrete,and the rubberized concrete are adopted in it.The application of novel composite concrete can satisfy the requirements of environmental protection and achieve sustainable development of buildings.With the promulgation of relevant policies and the continuous change of building demands in development of society,the research about the CFDST structures will focus on the diversification of structures,the sustainable development,the fire resistance of structures,and the fabricated structures.To obtain more and more CFDST structures with better mechanical properties and easy application in engineering practice is the ultimate goal.19 figs,64 ref

关 键 词：桥梁工程 土木工程 研究现状 文献综述 复式钢管混凝土 

分 类 号：U411[交通运输工程—道路与铁道工程]