【摘要】 结构自振频率是人行天桥的一个重要指标,计算自振频率通常采用有限元结构软件求取,这样做将简单问题复杂化,设计人员甚感不便。因此,本文根据结构动力学原理,参照多质点梁自由振动基本公式,推导出常规连续梁的自振频率关系式,并制成图表,为设计、审图提供方便。更多还原

【Abstract】 The natural vibration frequency of a structure of overpass bridge is an important parameter in design.It is generally calculated using the finite element analysis method,while complicating things and taking a great deal of workload.In this paper,a set of arithmetic expression of the natural vibration frequency for conventional continuous beam is deduced on the bases of structural dynamics,as well as referred to the multimass beam vibration theory.For the advantage of design and checking,series of relevant numerical charts and diagrams are also presented.更多还原