论文部分内容阅读
预应力加强型钢拱是指根据大跨度钢拱承受竖向荷载时的内力及变形分布,在钢拱轴线平面内增加适当的撑杆和预应力索,以改善其受力性能、提高刚度和承载力的新型结构体系。运用有限元软件ANSYS,分析了预应力加强型钢拱在不同竖向荷载作用下以及施加不同初始预应力时应力和位移的变化规律,同时与普通大跨度钢拱进行了对比,结果显示预应力加强型钢拱具有很大的优越性,刚度和承载力都有很大的提高。
Prestressed reinforced steel arch means that according to the internal force and deformation distribution of long-span steel arch subjected to vertical load, suitable brace and prestress cable are added in the plane of steel arch axis in order to improve its stress performance, increase rigidity and load bearing Force of the new structural system. By using finite element software ANSYS, the variation regularity of stress and displacement of prestressed reinforced steel arch under different vertical loads and different initial prestress is analyzed. Compared with the common long-span steel arch, the results show that the prestressing strengthening Steel arch has great advantages, stiffness and bearing capacity have greatly improved.