索穹顶比值逆迭代法形态分析OACSTPCD
Form-Finding Analysis of Cable Dome by Ratio Inverse Iteration Method
索穹顶结构的几何形状与预应力分布密切相关,在结构几何形状不变的情况下,各拉索、撑杆之间的预应力比例关系是唯一的.基于此,提出了一种新的形态分析方法——比值逆迭代法,它可以同时得到结构初始态下索杆内力分布以及平衡初始态几何,并能在迭代过程中改变结构几何使得索杆内力分布更加均匀.首先,对Gieger型索穹顶进行了形态分析,以验证比值逆迭代法的正确性,结果表明:比值逆迭代法求解效率高,得到的索杆内力分布合理,平衡初始态几何与设计初始态几何的位形偏差小.…查看全部>>
The geometric shape of cable dome structure is closely related to the distribution of prestress,and the prestress proportional relationship between cable and strut is unique under the same geometric shape of the structure.Based on this,a new form analysis method,ratio inverse iterative method,is proposed in this paper,which can simultaneously obtain the axial force distribution of cable-strut in the pre-stress state of the structure and geometric coordinates…查看全部>>
何契;张莉
上海大学力学与工程科学学院,上海 200444上海大学力学与工程科学学院,上海 200444
索穹顶比值逆迭代法形态分析初始态
cable domeratio inverse iteration methodform-finding analysispre-stress state
《结构工程师》 2024 (4)
30-38,9
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