基于连续弹性地基梁的轨枕静力响应研究

Research on the Static Response of Tie on Continuous Elastic Grade Beam

研究目的:针对轨枕结构形式与刚度的差异,采用轨枕静力响应的分析方法,分析轨枕弹性模量对轨道响应的影响。研究方法:基于Winkler假定,采用连续弹性基础梁法,建立轨枕静态响应的计算方法,以轨枕刚度为影响变量,考察轨枕刚度变化时,对轨枕静态响应量,如位移,转角、弯矩和剪力等的影响。研究结果:建立了轨枕结构静态响应分析的方法,得出了轨枕响应量的分布曲线及不同轨枕刚度对轨枕响应的影响。研究结论:建立的轨枕静态相应分析方法能够有效地分析弹性基础上的轨枕静力响应。在弹性基础上,随着轨枕弹性模量的增加,轨枕的静态响应变化有所增强。

Research purposes： Aiming at the difference between tie structural form and rigidity, the analysis is made for the influence on track response by tie elastic modulus by analysing tie static response. Research methods：Based on Winkler Assumption and adopting continuous elastic grade beam method, the calculation method of tie static response is worked out with regarding the tie rigidity as influence variable and consideration of the influence on the tie response volume by the change of tie rigidity, such as displacement, striking angle, flexural torque and shear force. Research results：The analysis method of tie structural static response is worked out, the distribution curves of tie response volume are given and the influence on tie response by tie rigidity is presented. Research conclusions：The perfect analyses can be made for the static response of the tie on elastic foundation by adopting tie static analysis method. It shows the change of static response of the tie on elastic foundation becomes large with the increase of elastic modulus of tie.