| 钢结构用的大直径圆钢管非线性稳定分析 |
| |
| 引用本文： | 肖文丽. 钢结构用的大直径圆钢管非线性稳定分析[J]. 科学技术与工程, 2011, 0(22): 5331-5334 |
| |
| 作者姓名： | 肖文丽 |
| |
| 作者单位： | 大庆石化工程有限公司土建室,大庆,163417 |
| |
| 基金项目： | 黑龙江省自然科学基金面上项目(E200811);黑龙江省自然科学基金重大项目(ZD200806)资助 |
| |
| 摘 要： | 为确定大直径中空夹层砼柱中内钢管的稳定性能和临界荷载,对5 m长的圆钢管开展了有限元特征值屈曲分析,获得屈曲临界荷载。在此基础上,采用弧长法对圆钢管进行了非线性失稳分析,考虑了几何和材料双重非线性的影响,得到了圆钢管结构整体稳定的全过程荷载-位移曲线以及单元的应力分布图。应用两倍弹性斜率法和双切线交点法求得临界荷载,与理论计算结果相比稍高,可以看出理论公式计算结果是偏于安全的。最后提出了圆钢管抗失稳的四点措施。
|
| 关 键 词： | 特征值屈曲 几何非线性分析 弧长法 |
Nonlinear Stability Analysis on Large-diameter Steel Tube Used in Steel Structures |
| |
| XIAO Wen-li. Nonlinear Stability Analysis on Large-diameter Steel Tube Used in Steel Structures[J]. Science Technology and Engineering, 2011, 0(22): 5331-5334 |
| |
| Authors: | XIAO Wen-li |
| |
| Affiliation: | XIAO Wen-li(Civil Architecture,Daqing petroleum Chemical Engineering CO,LTD,Daqing 163417,P.R.China,) |
| |
| Abstract: | To determine stability performance and the critical load of large-diameter steel tube used in Hollow sandwich concrete columns,this paper carried out the finite element linear buckling analysis for 5 meters long steel tube and obtained buckling critical load.Then performed the nonlinear instability analysis by the arc-length method and obtained the load-displacement curves of the overall stability of steel tube structure.The critical load can be got by twice the elastic slope method and double-tangent inter... |
| |
| Keywords: | vessels subjected to external pressure geometric nonlinear analysis arc-length method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
