摘要
研究高层钢筋混凝土建筑考虑建造过程的收缩徐变变形的结构分析理论及方法.采用较精确的弹性老化徐变理论的徐变公式,导出简单的超静定混凝土结构力和位移的本构方程,通过直接积分得出近似解析解,并和有限元法结合,建立了高层建筑考虑建造过程、收缩和徐变效应的计算模式.同时编制了对应的计算机程序(TBSCE),可节省大量计算机内存和机时.文中给出了30层高层钢筋混凝土结构算例.计算结果表明,建造过程和收缩徐变效应明显,应引起工程界密切注意.
The structural analysis theory and method of reinforced concrete tall buildings in view of construction procedures and creep deformation of shrinkage were investigated. Using the more accurate formula of elastic aging concrete creep theory, the equation of forces and displacements for hyperstatic concrete structure was deduced. The calculation model in view of consturction procedures and the effect of shrinkage and creep was modeled by combining solution of the fundamental equation with the finite element method. A related program named 'TBSCE' was compiled, which could greatly save computer memory and calculation time. In this paper, a numerical example of a 30-story reinforced concrete frame tube building is presented. The calculation shows that the effect of shrinkage and creep is obvious and deserves much attention.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第2期71-76,共6页
Journal of South China University of Technology(Natural Science Edition)
