| 点支式幕墙鱼腹式索桁架支承体系的自由振动 |
| |
| 引用本文： | 杨立军,吴晓,孙晋.点支式幕墙鱼腹式索桁架支承体系的自由振动[J].兰州理工大学学报,2009,35(6). |
| |
| 作者姓名： | 杨立军 吴晓 孙晋 |
| |
| 作者单位： | 湖南文理学院,土木建筑工程学院,湖南,常德,415000 |
| |
| 基金项目： | 湖南"十一五"重点建设学科，湖南省普通高校青年骨干教师项目，湖南省科技计划项目 |
| |
| 摘 要： | 预应力鱼腹式索桁架作为点支式玻璃幕墙的支承体系有着广泛的应用,非线性自振特性的研究对于索桁架结构在地震荷载作用下的响应分析具有十分重要的意义.考虑温度变化及几何非线性影响,采用连续化理论导出点支式玻璃幕墙预应力鱼腹式索桁架支承体系非线性振动方程.通过Galerkin方法将偏微分程转化为常微分方程,采用L-P法对常微分方程进行求解.结合工程实例讨论分析温度变化、振幅、预应力等因素对点支式玻璃幕墙预应力鱼腹式索桁架支承体系非线性振动的影响.算例表明,预应力鱼腹式索桁架支承体系固有频率随着温度的升高而减小,具有较强的非线性,其自振频率随着振幅发生变化,其非线性振动呈现"硬弹簧"特性,非线性自振频率高于线性振动频率.
|
| 关 键 词： | 预应力 鱼腹式索桁架 点支式玻璃幕墙 非线性 自由振动 |
Free vibration of fish-shaped cable truss support system for point-supported curtain wall |
| |
| YANG Li-jun,WU Xiao,SUN Jin.Free vibration of fish-shaped cable truss support system for point-supported curtain wall[J].Journal of Lanzhou University of Technology,2009,35(6). |
| |
| Authors: | YANG Li-jun WU Xiao SUN Jin |
| |
| Institution: | YANG Li-jun,WU Xiao,SUN Jin(College of Architecture & Civil Engineering,Hunan University of Arts and Science,Changde 415000,China) |
| |
| Abstract: | As a new kind of supporting member,a prestressed fish-shaped cable truss has been widely applied in point-supported glass curtain walls.The research on characteristics of nonlinear natural vibration is of vital importance for analysis of response of prestressed fish-shaped cable truss to seismic load.Taking the temperature effect and geometric nonlinearity into consideration,the nonlinear vibration equation of prestressed fish-shaped cable truss support system for point-supported glass curtain wall was deri... |
| |
| Keywords: | prestressing fish-shaped cable truss point-supported glass curtain wall nonlinearity free vibration |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
