无缝铁路道岔温度力与位移计算的方法研究

Sdudy of Temperatue Force Calcualtion Method and Displacement of Seamless Svitch

由于道岔结构的复杂性,以往对道岔温度力及由此引起的位移的计算采用简化后的“无限长粱”模型进行,该模型从结构上及有关假设条件上来看在许多地方与实际情况不符,文章所提出的新的计算方法采用了与实际结构形状较为符合的计算模型—三维有限元计算模型,通过算例表明,这种方法具有与实际结构相近、人为因素减少、计算精度高等几个特点。

For the complexly of sviteh struture, the model 'infinite long beam' is commonly used to calculate temperature force and displacement. In fact, the model is not suitable in actual condition. A new method is proposed in this paper. And a more suitable model-three dimentoin finite element, is used in this method. Showing the advantage such as approaching real structure, reducing anthropogenic factor and higher accuracy.