摘要
以钢管混凝土单肋模型拱和双肋模型拱为分析对象,以通用有限元程序为分析手段,对钢管混凝土拱空间受力进行了双重非线性分析.分析结果表明,采用该计算方法计算的结果能基本反映结构的受力性能,尤其是双肋拱.在空间荷载作用下,几何非线性影响在钢管混凝土拱空间受力行为中的影响上升;分枝点屈曲临界荷载几乎不随横向力的变化而变化,稳定极限承载力随横向力的增大而明显降低.
Using general finite element software, the dual non - linearity analyses for concrete filled steel tubular （CFST） arches are carried out, taking both the CFST model arches with a single rib and with double ribs as the case studies. It can be seen from the analyses that the calculation results from FEM can reflect the basic behaviors of the CFST arches subjected to spatial loads, especially for the arch with double fibs. Under the spatial loads, the influence of geometric nonlinearity of CFST arches on its behaviors will increase up. With the increase of the lateral loads, the stability ultimate load will increase while the elastic buckling load almost has no change.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第5期732-738,共7页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省重大科技项目(2003F007)
交通部西部交通科技项目(2003-318-798-20-1)
