中文摘要：

为提高梯式轨枕轨道综合减振效果,分别将钢轨振动位移和传递到基础的总功率流作为目标函数,枕下弹性垫板动刚度、材料损耗因子、块数以及纵向轨枕横截面面积作为优化变量,使用多元连续函数蚁群算法进行优化研究。结果表明：要减少钢轨的振动位移,需要增大枕下弹性垫板动刚度、纵向轨枕的横截面面积以及枕下弹性垫板的块数,同时减小枕下弹性垫板的材料损耗因子;要减小传递到基础的总功率流,则需要减小枕下弹性垫板的动刚度和枕下弹性垫板的块数,同时增大枕下弹性垫板的材料损耗因子以及纵向轨枕的横截面面积。使用统一目标函数法将多目标函数简化为单目标函数,得到最优化结果,和目前梯式轨枕轨道使用的参数相比,钢轨振动位移优化率达50.9%,传递到基础的总功率流优化率达47.6%。

英文摘要：

For improving the vibration reduction effect of the ladder track, research was conducted with ant colony algorithm of multivariate continuous function. Vibration displacement of rail and the total power flow of foundation were made as objective functions. Dynamic stiffness, material loss factor, the number of elastic pads under sleeper and area of longitudinal sleeper were made as design variables. The result shows that： to decrease vibration displacement of rail, dynamic stiffness, the number of elastic pads under sleeper and area of longitudinal sleeper should be increased and material loss factor of elastic pads under sleeper be decreased; to decrease total power flow of foundation, dynamic stiffness, the number of elastic pads under sleeper decreases and material loss factor of elastic pads under sleeper and area of longitudinal sleeper increases. Making multi-object to a single object with a constructor, optimization results are as follows： optimization rate of vibration displacement of rail is 50.9% and optimization rate of total power flow of foundation is 47.6% comparing with former parameters.