Test and Analysis of the Vibration Reduction Effect of Steel-Spring Floating Slab Track on Curved Sections for 120 km/h Metro
In order to master the vibration reduction effect of steel-spring floating slab track on curved sections under high-speed driving conditions,on-site vibration testing was carried out on curved sections of the 120km/h metro. The vibration characteristics of ordinary track and steel-spring floating slab track were studied under different curve radius conditions,and the variation law of vibration reduction effect of steel-spring floating slab track was analyzed. The results show that compared with the 2000m large curve radius line,when metro trains pass through the 750m small curve radius line,the average maximum Z vibration level of the tunnel wall vertical vibration of the ordinary track increases by 9.1dB,and the average maximum Z vibration level of the tunnel wall vertical vibration of the steel-spring floating slab track increases by 11.71dB. Under the condition of a 750m small curve radius line,the vibration reduction effect of the steel-spring floating slab track is 5.69dB. Under the condition of a 2000m large curve radius line,the vibration reduction effect of the steel-spring floating slab track is 8.30dB. The steel-spring floating slab track has a wider vibration reduction frequency range and better vibration reduction effect under the condition of large curve radius lines.
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维普
