基于多岛遗传算法的橡胶浮置板弹性的优化  

Optimization of Supporting Elasticity of Rubber Floating Slab Tracks by MIGA

作　　者：金浩[1] 刘维宁[2] 周顺华[2] 李克飞[3] 彭智勇[2] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]北京交通大学土木建筑工程学院,北京100044 [3]北京市轨道交通建设管理有限公司,北京100037

出　　处：《噪声与振动控制》2015年第4期16-19,共4页Noise and Vibration Control

基　　金：国家自然科学基金项目(51278043)

摘　　要：为研究橡胶弹性对橡胶浮置板轨道减振效果的影响,通过多岛遗传算法耦合Abaqus的自编程序,以《浮置板轨道技术规范(CJJ\T191-2012)》为依据,优化分析橡胶浮置板轨道的减振效果(优化变量为橡胶弹性),得出(1)橡胶浮置板轨道的橡胶弹性和减振效果指标不存在线性关系(即减小橡胶弹性,并不一定能得到最好的减振效果)。对于实际工程问题,建议通过优化方法,进行全局优化分析。(2)对于给出的橡胶弹性变化范围,当橡胶弹性模量取6.44×108N/m2时,橡胶浮置板轨道能够得到最好的减振效果。和现有某种橡胶浮置板轨道减振效果相比,优化后的橡胶浮置板轨道减振效果提升2.7 d B。The multi-island genetic algorithm （MIGA） combined with ABAQUS was employed to analyze the effect of supporting elasticity on vibration reduction ability of the rubber floating slab tracks. According to Technical code for floating slab tracks （CJJ／T191-2012）, vibration reduction ability of the rubber floating slab tracks was optimized with the rubber elasticity as the variable. Results show that （1） There is no linear relation between the supporting elasticity and the optimization target, i.e. reduction of rubber elasticity does not mean to always get the best vibration reduction ability of the rubber floating slab track. For engineering problems, it is suggested to use the optimization method to research the parameters of the rubber floating slab track. （2） When the value of the supporting elasticity of the rubber support is 6.44 × 10^8N/m^2, the best vibration reduction ability of the rubber floating slab track can be reached. The optimized rubber floating slab track has better vibration reduction ability （2.7 dB） than some other type of rubber floating slab tracks.

关 键 词：振动与波 浮置板轨道 多岛遗传算法 橡胶弹性 优化 

分 类 号：U231[交通运输工程—道路与铁道工程]