弦撑式索拱结构平面内稳定性研究  

In-plane stability study of chord-supporting cable-arch structure

作　　者：郝志鹏[1] 卢郁霖 毛明超 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《佳木斯大学学报（自然科学版）》2017年第1期1-5,共5页Journal of Jiamusi University：Natural Science Edition

摘　　要：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 influence of uniformly distributed load, by doing the linear stability analysis, we found the first three buckling mode. On the basis of the former analysis, through the elastic - plastic stability analysis, we contrast the buckling path, deformation process, buckling mode, stress and deformation and the initial defect sensitivity between the chord -supporting cable -arch structure and pure arch structure, which indicates that chord- supporting cable- arch structure surpass the pure arch structure.

关 键 词：弦撑式索拱 线性稳定分析 屈曲路径 失稳模式 初始缺陷 

分 类 号：TU393.3[建筑科学—结构工程]