轨道结构空间动力响应分析

Space Dynamic Response Analyses on Track Structure

建立了包含钢轨、轨枕、弹性垫层、道床和路基为一体的轨道结构空间分析模型．该模型将轨道的各个构件离散为不同的单元，然后组合各类单元进行整体分析，据此，开发了计算机程序ＴＤＡ．运用ＴＤＡ计算了各种算例，计算结果表明了本文计算模型及计算方法的可行性和实用性．

In this paper,a space model for analyzing track structure is established,in which rails,sleepers,elastic pads,ballast and underground foundation are considered as a whole body. The different components of track structure are discretized as different elements in the model. The global analyses are performed by assembling all elements. A computer program TDA is developed based on the theory. Finally some numerical examples with TDA dencotrate rhe reliability awel effectweness of ne model