本文根据桥梁的振动原理，引入简支桥梁的边界条件，推导简支桥梁的振动方程，求解出桥梁刚度、振型的实际运用公式。
According to principle of bridge vibration, this paper lead through boundary condition of free beam and deduce vibrational equation of free beam to solve rigidity and model of vibration.
目前对此虽然已经有较多研究成果发表，但多数以简支桥梁为研究对象，采用效率不高的数值方法或者解析方法求解随机响应，分析过程中普遍采用模态叠加法。
Some research papers have been published. However, most of these papers used relatively simple bridge models and adopted analytical solution or inefficient numerical method to get stochastic response.
因此，桥梁上部采用先简支后连续梁结构越来越多。
Therefore, the upper bridge with simply supported continuous beam structure more and more.
最后以一简支钢筋混凝土桥梁为例，证明了该方法的有效性、实用性和稳定性。
The validity, the practicability and the stability of the method were demonstrated by a simply supported reinforced concrete bridge as an example.
为了验证微挠度桥梁实现的可能性，作者设计微挠度简支梁模型并实现了上述的控制思路。
To illustrate the idea of such a smart prestressing system, a model with the self-adapted function is designed and tested, in which the simply supported girder bridge is applied.
分析桥梁横向连接方式，通过荷载横向分布系数的计算，确定简支梁板桥改造加宽形式。
This paper analyzes lateral connection method of bridge, confirms widening and reforming method for simple supported beam (slab) bridge via calculating lateral load distribution coefficient.
为提高某简支梁桥的抗震能力，采取适当的减震控制措施能够有效地减小桥梁的地震反应。
To enhance the aseismatic ability of simply supported beam bridge is an important content of earthquake prevention and disaster reduction.
同时，简支板梁桥又是小跨径桥梁最常用的桥型之一，因此，移动车辆荷载引起的简支板梁桥动力效应越来越被工程技术界所关注。
So the dynamic response of the plate girder bridge under moving loads are the problem which is concerned about all along, and also a project to be studied deeply.
“先简支后连续”体系梁在公路及市政桥梁建设中得到广泛应用。
The "First Simply Supported Then Continuously Supported" system girder is widely applied in road and urban bridge construction.
我国公路中小型桥梁多采用简支梁和橡胶支座，为提高行车的舒适度将多跨简支梁在桥面通过桥面铺装层进行连续。
In China, medium and minor highway bridge applying simple-supported beam with continuous deck-pavement has been usually constructed in order to promote comfortability of driving car.
给出了弹性支承桥梁和车体的振动方程并通过对具有弹性支座简支梁主振动的分析，得出了梁主振型的解析公式。
The principal vibration of a simple beam with elastic supports was analyzed and the analytical formulation of normal vibration mode was derived.
结合鹤大公路桥梁施工的实践，简述了空心板简支梁转换为连续梁的施工方法。
According to the practice of bridge construction at Heda Road, the paper introduces the construction method of changing voided slab simple-supported beam into continual beam.
先简支后连续桥梁是现在桥梁施工采用的形式。
The continuous bridge after simply supported is the building type adopted in current bridge construction.
针对现有梁轨相互作用研究主要集中于小跨度简支梁桥，而对于连续梁桥梁轨相互作用研究较少。
At present, the existing researches on interaction have mainly focused on the small span simply-supported Bridges, while there is not so much works on continuous Bridges.
通过算例，揭示了简支型桥梁在随机车流作用下挠度响应的方差与车速、车距之间的关系。
The relation of deflection variance, vehicle speed and distance between two cars is revealed in example. This paper provides theoretical basi…
通过算例，揭示了简支型桥梁在随机车流作用下挠度响应的方差与车速、车距之间的关系。
The relation of deflection variance, vehicle speed and distance between two cars is revealed in example. This paper provides theoretical basi…
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