摘要
钢管混凝土能够充分发挥钢材和混凝土的特点,在实际工程中的应用越来越广泛。本文采用有限元软件ABAQUS对多层钢管混凝土框架进行三维有限元数值模拟,考虑材料及几何非线性,分析了钢管混凝土框架在单调加载下的荷载-位移全过程,探讨了采用该方法时的建模、核心混凝土及钢材本构模型的选取、钢管与混凝土之间的界面处理等关键问题,数值模拟结果和试验结果总体上吻合良好。
The steels and concrete can express their characteristics adequately in apply of concrete-filled steel tube（CFST） structures which have been used to the pract ical engineering widely.Basing on the elastic-plasticity theory,the software A BAQUS was used to do a three-dimension finite element numerical simulation to a multi-story CFST frame structure.The material and geometric nonlinear were co nsidered,and the load versus displacements（P-Δ） relation of the CFST fra me was analyzed under monotonic loading.Some critical issues,such as the const itutive model of core concrete and steel,interface model of steel tube and conc rete,were discussed.Numerical simulation and experimental results show good ag reement.
出处
《土木工程与管理学报》
2011年第3期124-127,共4页
Journal of Civil Engineering and Management
基金
甘肃省高等学校基本科研业务费专项资金(0904ZTB147)
兰州理工大学科研发展基金(201002)
关键词
三维单元
钢管混凝土
框架
非线性
数值模拟
three-dimension finite element method
conc rete-filled steel tube（CFST）
composite frame
nonlinearity
numerical simulation
