摘要
研究了索网屋盖索桁架支承体系在均布静恒载作用下的非线性固有振动。采用Galerk in原理及改进的L-P法求得索桁架非线性固有振动的近似解及层间接触力的近似解。讨论分析了温度、振幅等因素对索桁架非线性固有振动及其层间接触力的影响。
It was studied that the nonlinear natural vibration of cable-truss of steel netlike roof under constant load. Meanwhile the approximate soluiion of nonlinear natural vibration of cable-truss and the cable＇s contacting forces were given by use of the Galerkin principle and improved L -P method. Then something that affect its nonlinear vibration and the cable＇s contacting forces, such as the amount of temperature changing, as well as amplitude were discussed.
出处
《四川建筑科学研究》
北大核心
2008年第4期168-171,共4页
Sichuan Building Science
基金
湖南省自然科学基金资助项目(07jj3095)
湖南省教育厅教改重点资助项目(湘教通[2008]263号(156))
关键词
索桁架
非线性
层间接触力
固有振动
cable-truss
nonlinearity
cable＇s contacting forces
natural vibration
