摘要
本文用弹塑性大变形分析理论,以大跨度拱桥为研究对象,通过钢管混凝土结构和钢管结构之间的稳定性、内力和刚度等方面比较,对钢管混凝土的有效性进行了研究分析。结果表明,尽管钢管混凝土的结构刚度明显大于钢管结构,但钢管拱桥具有自重轻、轴力低等优点,其失稳安全系数和内力特性并不比钢管混凝土拱桥差,因此进一步比较钢管混凝土拱桥和钢拱桥的稳定特性,对工程设计很有参考价值。
Using elasto-platic large deflection theory,an arch bridge was analyzed in comparison the stability,internal force and stiffness between CFST structure and steel pipe structure.The results show that compared to CFST structure,Steel pipe structure has less stiffness, but same ultimate load coefficient and internal force property;further investigation in comparing the mechanical property of CFST arch bridge and steel arch bridge has been tan＇led out, and it has shown considerable consulting value for practical engineering design.
出处
《现代交通技术》
2006年第2期40-43,共4页
Modern Transportation Technology
关键词
铜管混凝土
拱桥
钢管
稳定
CFST structure
arch bridge
steel pipe
stability
