摘要
进行了钢管混凝土(单圆管)单肋拱空间受力全过程的试验研究。研究表明,在面内和面外荷载共同作用下,面内的受力性能对初始缺陷的敏感性要大于面外受力;面外变形是钢管混凝土单肋拱极限承载能力的主要控制因素;与面内受力相反,空间受力时,几何非线性成为钢管混凝土拱的非线性性能与极限承载力的主要影响因素,材料非线性降为次要的影响因素。对应用通用程序进行钢管混凝土拱空间受力双重非线性有限元分析进行了探讨。
Experiment study on a CFST （single tube） arch with one rib under spatial loads is carried out. The study shows that the behavior of the arch under in-plane loads is more sensitive to imperfection than that under out-of-plane loads. The lateral deformation is one of the main control factors for the ultimate load-carrying capacity of the arch. Compared to CFST arch under in-plane loads, the geometrical nonlinearity becomes the dominant factor in the nonlinearity and ultimate load-carrying capacity of the arch while the material nonlinearity turn to be a subordinate factor. The dual nonlinearity FEM of CFST arch under spatial loads analyzed with general finite element software is discussed as well.
出处
《工程力学》
EI
CSCD
北大核心
2006年第5期99-106,共8页
Engineering Mechanics
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)
