摘要
以福鼎山前大桥空间有限元模型为基础,分析了影响钢管混凝土组拼管拱面外屈曲的主要参数,包括横撑布置形式、横撑刚度、拱脚约束情况、截面含钢率和混凝土弹性模量。有限元分析结果表明,横撑布置形式、横撑刚度和截面含钢率对钢管混凝土组拼管拱面外屈曲影响很大,但混凝土强度等级和拱脚约束对其影响很小。
Based on the finite element spatial model of Shanqian Bridge in Fuding, Ningde, Fujian, parameters influencing out-of-plane buckling of concrete filled steel tubular （CFST） build-up arch, including arrangement and rigidity of lateral brace, fixing condition of arch spring, sectional steel ratio and Young＇s modulus of filled concrete were analyzed. FEM analysis result shows that sectional steel ratio, arrangement and rigidity of lateral brace greatly influence out-of-plane buckling of CFST build-up arch, that the influence of fixing condition of arch spring and Young＇s modulus of filled concrete on buckling can be neglected.
出处
《福建工程学院学报》
CAS
2008年第1期13-16,共4页
Journal of Fujian University of Technology
基金
福建省教育厅B类科技基金资助项目(JB04123)
福建农林大学青年教师科研基金资助项目(05A10)
关键词
钢管混凝土
组拼拱
面外屈曲
参数分析
CFST
build-up arch
out-of-plane buckling
parametric analysis
