| 竖向阶跃荷载下初始缺陷及初始静位移对单层球壳动力稳定性的影响 |
| |
| 引用本文： | 叶继红,沈世钊. 竖向阶跃荷载下初始缺陷及初始静位移对单层球壳动力稳定性的影响[J]. 建筑结构, 2004, 0(11) |
| |
| 作者姓名： | 叶继红 沈世钊 |
| |
| 作者单位： | 东南大学RC&PC结构教育部重点实验室 南京210018(叶继红)，哈尔滨工业大学 150090(沈世钊) |
| |
| 基金项目： | 国家自然科学基金重大项目资助 ( 5 9895 410 ) |
| |
| 摘 要： | 根据大量算例的计算结果 ,分析了在竖向阶跃荷载作用下 ,跨度为 40～ 70m、矢跨比为 1 / 8～ 1 / 5的单层球面网壳的初始缺陷和初始静位移对其动力稳定性的影响。研究表明 ,考虑初始静位移与否将对结构的动力失稳临界荷载产生影响 ,而初始静位移的大小对网壳结构的动力失稳临界荷载影响甚小。另外 ,初始缺陷对网壳动力失稳临界荷载的影响与其静力稳定有很大差别。
|
| 关 键 词： | 初始缺陷 初始静位移 单层球面网壳 动力稳定性 |
Effects of Initial Imperfection and Initial Static Displacement on Dynamic Stabi lity of Single Layer Reticulated Domes Subjected to Vertical Step Load |
| |
| Ye Jihong Shen Shizhao. Effects of Initial Imperfection and Initial Static Displacement on Dynamic Stabi lity of Single Layer Reticulated Domes Subjected to Vertical Step Load[J]. Building Structure, 2004, 0(11) |
| |
| Authors: | Ye Jihong Shen Shizhao |
| |
| Affiliation: | Ye Jihong Shen Shizhao |
| |
| Abstract: | Based on the comprehensive numerical analysis of single layer reticulated domes subjected to vertical step load,the effects of initial imperfection and initial static displacement on dynamic stability behavior are presented.Finally,some imp ortant conclusions are obtained,such as considering initial static displacement or not have an effect on dynamic stability critical load of reticulated domes wh ose span is 40m,50m,60m,70m,respectively,with rise-span ratio 1/5,1/6,1/7,1/8,b ut the value of initial static displacement has not much effect on that,and the influence of initial imperfection on dynamic stability of reticulated domes is m uch different from that on static stability of structures. |
| |
| Keywords: | initial imperfection initial static displacement sin gle layer reticulated domes dynamic stability |
| 本文献已被 CNKI 等数据库收录！ |
|
