This paper carries out on-site continuous compaction detection of subgrade conducted at Beichen Station of Beijing-Binhai Intercity Railway,to explore the acceleration characteristics of the vibrating wheel and the filler surface,and investigates the applicability of the Compaction Energy Value(CEV).The research findings indicate that the acceleration time history data recorded from the vibrating wheel during the rolling process is relatively stable,and the fundamental wave frequency of the ground acceleration data is consistent with the soft vibration mode frequency of the roller.Through correlation analysis,the correlation coefficients between CEV and conventional testing indicators are all≥0.7,suggesting that CEV is better than CMV in overall stability,anti-interference ability and accuracy,thereby making it a more suitable tool for compaction testing of group A,group B coarse-grained fill.
high-speed railway subgradecontinuous compaction detectionbase wave frequencycompaction energy valuecorrelation
万方数据
维普
