论文部分内容阅读
以某无推力提篮式人行拱桥为工程实例,分析无推力提篮式拱桥的主要设计特点。并建立该提篮拱桥的空间有限元计算模型,分析了边横梁的应力、结构自振特性及结构整体稳定性。分析结果表明:无推力提篮式拱桥整体刚度大,整体稳定性好,基础工程造价低,边横梁受应力影响截面尺寸应适当加大,有限元建模时结构自重系数应适当放大。
Take a thrust-free basket-type pedestrian arch bridge as an example, the main design features of the thrust-type basket-type arch bridge are analyzed. The space finite element calculation model of the arch bridge is established, and the stress, the natural vibration characteristics and the overall structural stability of the side beam are analyzed. The results show that the overall stiffness of the basket-typed arch bridge without thrust is large, the overall stability is good, the cost of the foundation engineering is low, and the cross-sectional dimension of the side beam under the influence of stress should be appropriately increased. The self-weight coefficient of the structure should be enlarged appropriately when the finite element method is used.