摘要
体外预应力结构在承载能力极限状态下的性能是设计关注的重要问题 ,而现行规范中并没有提出一种有效的计算方法 .而采用非线性有限元程序对体外预应力混凝土梁进行全过程分析不失为一种较精确的方法 ,同时考虑了混凝土和钢筋的材料非线性以及结构的几何非线性 ,建立了体外预应力简支梁的三维分析模型 ,分析并模拟了在三分点荷载作用下加载直到破坏的全过程 。
The behavior of externally prestressed concrete beams at failure is essential to the design of external prestressing,however,nowadays specifications never provide a valid and effective method specially to external prestressing.Numerical simulation for externally prestressed beams based on a nonlinear finite element approach is a perfectly relatively precise way.Considering both material and geometrical nonlinearity,externally prestressed simply supported beams are modeled and analysed for the whole process of loading until failure at third-point loading,and compared with the experimental ones.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第7期803-807,共5页
Journal of Tongji University:Natural Science
关键词
体外预应力
混凝土梁
非线性
有限元
externally prestress
concrete beams
nonlinear
finite element
