论文部分内容阅读
为研究大悬臂箱梁结构极限承载能力的影响因素,以某悬臂长7.174m的大悬臂展翅预应力混凝土宽箱梁桥为工程背景,采用Ansys软件建立空间实体模型,考虑结构几何非线性及材料非线性,通过数值分析得到4个不同工况的荷载与跨中变形曲线以及极限荷载,研究不同工况、混凝土强度、配筋率对大悬臂结构极限承载能力的影响规律。
In order to study the influence factors of the ultimate bearing capacity of the large cantilever box beam structure, a large solid cantilever beam-spanned prestressed concrete wide-box girder bridge with a cantilever length of 7.174 m is taken as an engineering background. The Ansys software is used to establish the spatial solid model, considering the geometric nonlinearity of the structure and the material Nonlinear, through the numerical analysis, four different working conditions of the load and the mid-span deformation curve and the ultimate load were obtained. The influence of different working conditions, concrete strength and reinforcement ratio on the ultimate bearing capacity of large cantilever structures was studied.