级配碎石振动压实过程的连续动态监控分析

通过对压实机具与级配碎石相互作用的动力学分析,得到可以用级配碎石对压实机具的抗力的变化来表征压实状态的变化。采用系统识别原理和动态测试技术,通过对二者相互作用的连续测试,得到了能反映材料压实过程中压实状态变化的抗力信息,根据级配碎石结构抗力的变化,判断压实的质量,并得到了结构抗力与压实密度之间的关系,突破了评价材料压实状态必须用密度指标的体系,为现场级配碎石基层结构压实质量的连续实时监控奠定了基础。

Analysis of continuous dynamic monitoring on vibrating compaction process of graded broken stone

The resistance of graded broken stone to vibratile compacter was used to study the change of compaction state by analyzing the interaction between vibrating compacter and graded broken stone with dynamics. Utilizing state identification theory and automatic testing technology, the resistance reflecting the change of compaction state during compacting process was obtained by continuous testing the interaction, the quality of compaction could be judged and the relation between resistance and density of material could be obtained by the change of resistance of graded broken stone. Through the tradition that density must be used to appraise the compaction state of material was abandoned, and the basis for continuous monitoring the compaction quality of graded broken stone subgrade in-site was established.