钢管混凝土静力力学性能理论研究现状  

Theoretical Research Status of Concrete-filled Steel Tube's Static Mechanical Behavior

作　　者：黄一杰[1,2] 王长青[3] 孙黄胜[1] 孙跃东[1] 王清[1] 刘艺[1] 

机构地区：[1]山东科技大学土木工程与建筑学院,山东青岛266590 [2]山东科技大学山东省土木工程防灾减灾重点实验室,山东青岛266590 [3]同济大学材料科学与工程博士后流动站,上海200092

出　　处：《山东科技大学学报（自然科学版）》2015年第5期32-39,共8页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(51408346);山东省"泰山学者"建设工程专项资金项目(TSHW20130956)

摘　　要：从理论分析和计算方法两个方面介绍了钢管混凝土静力力学性能的国内外研究现状,总结了现阶段理论研究的成果。分析了各种研究方法的特点并指出目前研究存在的缺陷。分析结果表明,在对钢管混凝土静力分析时,外部钢材大都采用了基于经典塑性理论所建立的力学模型;而受核心混凝土较复杂的物理特性影响,其本构模型选用种类较多,主要有塑性理论模型与损伤理论模型等,且每一种模型均较实际有所差异。另外,现有针对钢管混凝土力学分析的计算方法较为简单,有待于进一步研究。基于以上分析,结合钢管混凝土的受力特点,探讨了钢管混凝土静力力学性能理论研究中的关键问题。最后展望了钢管混凝土力学研究的发展方向。This paper first introduced the research status on the static mechanical behavior of concrete-filled steel tube（CFST）at home and abroad,focusing on its theoretical analysis and calculation methods.The current theoretical research findings were summarized and the features as well as shortcomings of different research methods were analyzed.It is found that the static mechanical analysis of the outer steel tube mostly adopts the mechanical model based on the theory of plasticity while various constitutive models,including,plastic model and damage model,have been adopted to study core concrete due to its complex physical properties and these existing models could not fully reflect the actual properties of core concrete.It is also found that the current calculation methods of CFST mechanical behavior are relatively simple and need to be further studied.Then,based on the above research findings and mechanical characteristics of CFST,this paper explored the key problems in researches on static mechanical behaviors of CFST.Finally,it forecasted the development trend of static mechanical studies on CFST.

关 键 词：钢管混凝土 静力力学性能 塑性理论 损伤理论 

分 类 号：TU375.4[建筑科学—结构工程]