大跨度悬索桥非线性静风稳定性全过程分析

Full Range Nonlinear Aerostatic Stability Analysis for Long-span Suspension Bridge

大跨度悬索桥具有大跨度、纤细、轻柔的特点,其静风稳定性问题较为突出。基于增量内外迭代混合法求解非线性空气静力问题的原理,使用ANSYS/APDL语言编制了大跨度桥梁非线性空气静力分析程序,并运用该程序实现了大跨度悬索桥的非线性静风稳定性全过程分析,探讨了大跨度悬索桥的静风失稳过程和机理。

With the characteristics of being long-span,slender and flexible,the nonlinear aerostatic stability program of long-span suspension bridge is remarkable.Based on increment and inner-outer iteration method of analyzing nonlinear aerostatic problem,a program for analyzing nonlinear aerostatic problem of long-span bridges is developed using ANSYS/APDL programming language.Using this program,the full range nonlinear aerostatic stability of long-span suspension bridge is accomplished;also,the process and mechanism of long-span suspension bridge＇s aerostatic stability are discussed.