地铁车辆段上盖建筑道砟垫减振机理与效果

曹志刚,王思崎,许逸飞,白晓东,袁宗浩,马夏飞

Vibration mitigation mechanism and effect of ballast mats for over-track buildings on metro depot

Zhi-gang CAO,Si-qi WANG,Yi-fei XU,Xiao-dong BAI,Zong-hao YUAN,Xia-fei MA

表 2 钢轨和轨枕的振动响应

Tab.2 Vibration response of rails and sleepers

轨道结构类型 测点 v/(km·h−1) w/mm VLmax /dB 水平 竖直 有道砟垫 （咽喉区） A1 5 0.859 84.35 89.61 A1 10 0.638 86.13 91.27 A1 15 0.470 87.85 94.39 B1 5 0.298 83.02 87.26 B1 10 0.187 84.36 88.15 B1 15 0.153 85.12 88.47 无道砟垫 （咽喉区） A2 5 0.120 91.61 97.57 A2 10 0.103 92.01 98.53 A2 15 0.076 93.46 100.64 B2 5 0.047 82.59 87.22 B2 10 0.381 83.56 88.17 B2 15 0.024 84.20 88.39 有道砟垫 （试车线） A3 20 0.413 81.88 87.45 A3 30 0.231 82.01 90.26 A3 40 0.180 82.07 91.39