At the same time , dynamical analysis for a given bridge has been done through the software MIDAS, and the relation of between basic frequency and sag ratio of stress- ribbon footbridges and frequency wave on the base of given sag have been educed.

• 同时，通过计算软件MIDAS对拟定桥梁进行动力分析，得出人行悬带桥的基频与垂跨比的关系以及特定垂度下的频率波形。