摘要
在现有离心钢管混凝土本构关系分析的基础上,将离心钢管混凝土简化为同一尺度的横观各向同性体,利用在弹性状态下应变能相等原理和弹塑性状态时应力—应变呈二次抛物线变化的假定,提出了离心钢管混凝土这种组合结构新的等效本构关系。实例分析表明,模型与试验结果吻合较好,且该本构关系能客观地反映了离心钢管混凝土构件的物理力学关系,为离心钢管混凝土结构进行数值分析奠定了基础。
Based on the available theories, centrifuge concrete-filled steel tubular (CCFST) is studied by simplifying it as a kind of composite material. An analytical model for constitutive relationship of CCFST is proposed by using strain energy principle in elastic state and assuming quadratic parabolic stress and strain relationship in the elastoplastic stage. Good agreement is observed between the predictions using the proposed model and the experimental results. The present work has laid down a good foundation for further study of mechanical properties of CCFST and improvement of design methodology.
出处
《工程力学》
EI
CSCD
北大核心
2005年第2期110-115,共6页
Engineering Mechanics
关键词
组合结构
离心钢管混凝土
本构关系
应变能
结构设计
Centrifugation
Composite structures
Concretes
Elastoplasticity
Mechanical properties
Structural design
