摘要
通过具体算例采用有限元法分析CFRP索斜拉桥的各非线性因素的影响量,并与钢索斜拉桥进行对比。鉴于CFRP的线膨胀系数远小于钢材或混凝土的线膨胀系数,计算了4种不同结构体系的CFRP索斜拉桥和钢索斜拉桥在温度荷载下的静力反应,计算结果表明CFRP索斜拉桥相对于钢索斜拉桥在静力方面具有较多优势。
Based on the given calculation examples, the finite element method is used to analyze the influence quantity of various nonlinear factors of cable-stayed bridge used with CFRP （carbon fiber reinforced plastic） cables and the analysis of the influence quantity is compared to that of the cable-stayed bridge used with steel cables. In consideration that the linear expansion coefficients of the CFRP are far less than those of the steel and concrete, the static force responses of four kinds of cable-stayed bridges of different structural systems respectively used with the CRFP and steel cables under temperature load are calculated. The results of calculation indicate that in aspect of the static force, the cable-stayed bridge used with the CFRP cables has more advantages than those of the bridge used with the steel cables.
出处
《世界桥梁》
北大核心
2007年第4期47-50,共4页
World Bridges
基金
国家自然科学基金项目(50178018)
关键词
斜拉桥
有限元法
CFRP
几何非线性
温度效应
cable-stayed bridge
finite element method
carbon fiber reinforced plastic
geometric nonlinearity
temperature effect
