摘要
基于乌曼斯基的闭口截面薄壁杆件约束扭转理论 ,利用功能原理 ,导出闭口薄壁杆件约束扭转应变能公式 .根据最小势能原理 ,用瑞利—里兹法对闭口薄壁桥墩稳定性进行分析 ,导出了考虑自重条件下桥墩的稳定计算公式 .该法概念明确、简便易行 ,可供工程设计者参考、使用 .
Based on the restrained torsion theory of the A.A Yманскип about the thin walled piers with closed section is principle of energy, the calculation formula of the energy of strain about the thin walled piers with closed section is established.According to the principe of minimum potential and using Ray leigh Ritz method,stability analysis about the thin walled bridge piers with closed section is done and the stability calculation formulas are derived.The calculation formulas are clear in concept,simple in computation and can be easily used for designer.
出处
《西北建筑工程学院学报（自然科学版）》
2001年第1期37-41,共5页
Journal of Northwestern Institute of Architectural Engineering
关键词
闭口薄壁桥墩
能量法
弹性稳定
屈曲
thin walled piers with closed section
energy method
elastic stability
buckling
