论文部分内容阅读
在全跨荷载作用下,对弦撑式索拱结构进行线性稳定分析,得到前三阶失稳模态。在此基础上对其进行弹塑性稳定分析,对比弦撑式索拱结构与纯拱结构的弹塑性屈曲路径、变形过程、失稳模式、失稳时的应力与变形、初始缺陷敏感性。研究表明弦撑式索拱结构各项性能均明显优于纯拱结构。
Under the condition of full span load, the linear stability analysis of the string-supported cable arch structure is obtained, and the first three modes of instability are obtained. On this basis, the elastic-plastic stability analysis is carried out to compare the elastic-plastic buckling path, deformation process, instability mode, stress and deformation in the instability and the initial defect sensitivity of the cable-stayed arch structure and the pure arch structure. The results show that the performance of the string-supported cable arch structure is obviously superior to the pure arch structure.