钢结构人行桥自振频率影响因素及其分析

Influencing Factor and Analysis of Natural Vibration Frequency of Steel Structural Footbridge

城市钢结构人行天桥竖向自振频率为设计控制要素之一。提出了影响桥梁自振频率的因素,并通过有限元分析软件梁单元模型进行分析计算,研究了结构型式、梁高及桥面铺装对桥梁自振频率的影响。得到的相关结论可对同类工程起到借鉴参考意义。

The vertical natural vibration frequency of urban steel structure footbridge is one of the design control elements.The factors influencing the natural vibration frequency of bridge are put forward,and are analyzed and calculated by the beam element model of the finite element analysis software.The influences of structure form,beam height and deck pavement on the natural vibration frequency of bridge are studied.The obtained conclusion can be referred for the similar projects.