基础位移激励下碳纤维矩形索网的非线性振动

THE NONLINEAR VIBRATION OF RECTANGULAR CABLE NET USING CARBON FIBER CABLES UNDER FOUNDATION DISPLACEMENT EXCITATION

研究碳纤维材料矩形单层索网在基础位移激励下的非线性振动问题,是索网抗震防震设计的基础.在考虑温度变化的基础上,建立了碳纤维矩形索网在基础位移激励下的非线性振动方程,采用Galerkin原理及KBM法求得了碳纤维材料矩形单层索网非线性振动的近似解.在把碳纤维索网与钢丝索网比较的基础上,讨论分析了温度、位移激励、振幅、阻尼等因素对矩形单层索网非线性振动的影响,得到了碳纤维索网振动特性优于钢丝索网振动特性的结论.

This paper studied that the nonlinear vibration of rectangular cable net using carbon fiber cables under foundation displacement excitation, and the nonlinear vibration equation was presented on the basis of considering temperature changing . The approximate solution of nonlinear vibration of rectangular cable mesh was given using Galerkin principle and KBM method. Then some factors, which affect the nonlinear vibration, such as the amount of temperature changing, foundation displacement excitation, amplitude as well as damping, were discussed with the comparison between steel cable and carbon fiber cable. At last the conclusions can be obtained that the vibration characteristics of cable net using carbon fiber cables is superior to cable net using steel.