摘要
体外预应力简支梁体系可以视为内部一次超静定的组合体系,其结构计算要考虑到梁体的刚度变化,结构受力表现为几何非线性,所以,体外预应力混凝土结构的强度计算应该是结构的极限承载力的计算,而非截面的极限抗弯强度计算。引入几何非线性与材料非线性耦合分析方法,对体外预应力试验梁进行非线性分析。
External prestressed simple supported beam system is regarded as an inner hyperstatic composlte,in which stiffness variation of beam body is considered in the structural calculation.Structural load represents as geometrical non-linearity.It is therefore that the strength calculation of outside pre-stressed concrete structure should be ultimate bearing capacity calculation,but not the non-sectional ultimate bend resistance calculation.This article introduces the coupling analysis method of geometric non-linearity and material non-linearity in order to do the non-linearity analysis for outside pre-stressed testing beam.
出处
《贵州工业大学学报（自然科学版）》
CAS
2004年第4期80-83,90,共5页
Journal of Guizhou University of Technology(Natural Science Edition)
关键词
体外预应力
模型试验
力学分析
极限承载力
external prestressing
model test
mechanical analysis
ultimate bearing capacity
