铁道科学与工程学报2017，Vol.14Issue(7)：1512-1518,7.
基于能量原理的空间结构无应力状态平衡方程推导
Derivation of equilibrium equation of space beam element based on principle of potential energy
摘要
Abstract
In order to explore the influencing factors of the final state of the space beam element based on the shape structure, this study was aimed to derive the equilibrium equation of space beam structure of unstressed state control method based on the principle of minimum potential energy. The influencing factors of the final state of the structure, and the correctness and reliability of the equilibrium equation were analyzed and then verified by an example. The analysis results show that the equilibrium equation of unstressed state control method on space beam element is correct and reliable, which can be directly applied to the calculation of the state of any stage in the shape space beam structure. The final state of the structure formed in stage is only related to the structural system, external load, boundary condition, the unstressed lebgth and the unstressed curvature of the spatial beam element, but not with the specific forming process.关键词
斜拉桥/空间梁单元/几何非线性/分阶段成形/平衡方程/无应力状态量Key words
cable stayed bridge/space beam element/geometric nonlinearity/formation in stages/equilibrium equation/ustressed state amount分类
交通工程引用本文复制引用
孙志伟,杜仕朝,康春霞,刘仲洋,邬晓光..基于能量原理的空间结构无应力状态平衡方程推导[J].铁道科学与工程学报,2017,14(7):1512-1518,7.基金项目
国家自然科学基金资助项目(51308056) （51308056）
国家西部交通建设科技资助项目(2009319812050) （2009319812050）
陕西省交通运输厅科技资助项目(13-25k) （13-25k）
