摘要
以准池重载铁路ZCZQ-4标段高填方黄土路基为试验段,在分析冲击压路机冲击压实原理的基础上,将冲击波简化为三角形荷载,利用改进的Scott公式,将每一次轮瓣与地面的接触看作是一次强夯,进行竖向位移的计算并在现场埋设沉降观测仪,将理论计算与实际观测值对比。研究结果表明:将冲击压路机的冲击荷载简化为三角形荷载,通过加卸荷模型计算竖向位移,该方法得到的竖向位移与实测值相符,这种方法可以运用于实际。
Taking ZCZQ- 4 section loess high filled roadbed on Zhun-Chi Heavy Haul Railway as test section,the impact roller compaction principle is analyzed,and the shock wave is simplified as the triangle load. The modified Scott formula is used,with each wheel lobe contacted with the ground as a dynamic compaction,to make the vertical displacement calculations and with settlement observation instrument buried at the site,the theoretical calculation is compared with actual observations. Research results show that when the impact roller impact load is simplified as the triangle loading,the loading and unloading model vertical displacement calculated value is consistent with the actual value,so this method can be applied in practice.
出处
《铁道建筑技术》
2014年第12期47-50,共4页
Railway Construction Technology
