就是有2支座的桥，基本桥底下没有桥墩， 桥梁直接将二个目标点连接起来，其构造简单完全不用考虑负弯矩和负剪力，跨度基本不大于20米。 简支桥梁结构简单，建造速度快、成本低廉，适合在承重要求不高的低等级公路和非机动车道路使用。
...中国论文网 关键词：钢筋混凝土；简支桥梁；病害；防治方法 [gap=213]Key words: reinforced concrete; simply supported bridges; disease; prevention methods ...
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钢筋砼简支梁桥 Reinforced concrete bridge beams
多跨简支T梁桥 multi-span T shape free beam bridge
简支t型梁桥 simply supported t-beam bridge
简支转连续桥梁 Jane turn a continuous bridge
装配式简支梁桥 fabricated simply-supported beam bridge
预应力混凝土简支梁桥 Prestressed concrete simply supported beam
先简支后连续桥梁 continuous bridge erected as simple-supported T-beam
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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.
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