基于多点连续回弹模量煤矸石路基力学响应规律

Mechanical Response Law of Coal Gangue Subgrade Based on Multi-point Continuous Modulus of Resilience

路基回弹模量是评价路基施工质量的重要参数。落球式回弹模量测定仪在公路工程上的应用尚未普及,为寻求FWD法反算路基回弹模量与落球式回弹模量测定仪测定路基回弹模量的相关关系,采用现场对比试验和数值分析的方法,得到2种检测结果线性相关关系。研究结果表明:在煤矸石填筑的路基时,2种方法测定的回弹模量在均值和趋势等方面有较好的相关性,建立的回归公式可作为路基施工质量控制的参考依据。

Subgrade resilient modulus is an important parameter to evaluate subgrade construction quality.The application of falling ball resilient modulus tester in highway engineering has not been popularized.In order to find the correlation between FWD method and falling ball resilient modulus tester,the field comparative test and numerical analysis are used to obtain linear correlation between the two detection results.The results show that:on subgrade filled with coal gangue,there is a good correlation between the mean value and trend of resilient modulus measured by the two methods,and the established regression formula can be used as a reference for subgrade construction quality control.