【摘要】 以某钢管混凝土拱桥为基本分析对象,建立了三维仿真数值模型,分析了钢管混凝土拱桥在多种因素耦合作用下的极限承载力,详细探讨了初始几何缺陷、活载比例、荷载分布形式、含钢率等对钢管混凝土拱桥极限承载力的影响效应。得出了一些有益的结论。更多还原

【Abstract】 Taking a concrete-filled steel tubular arch bridge as the basic analysis object,this paper establishes a three-dimensional simulation numerical model for and analyzes the ultimate bearing capacity of concrete-filled steel tubular arch bridges under coupling action of various factors,and the paper also discusses in details the effect of the initial geometric imperfection,live load proportion,load distribution forms and steel content ratio on the ultimate bearing capacity of the arch bridges and eventually generalizes some helpful conclusions.更多还原