文摘
To improve the efficiency of compaction and the compaction quality of pavement, a novel design principle of a roller based on double-frequency composed vibration (DFV) was put forward and adopted. According to the design function, the eccentric shaft parts of the steel wheel were designed and manufactured to match the vibration system and driving system, and a prototype of the DFV roller was obtained by assembling these modules. The frequency domain of the roller was simulated and tested. The consistent results showed that in a working state, the DFV roller could simultaneously excite two frequency components, thus providing an additional resonance frequency component in the compaction process compared with the case for the traditional vibratory roller with a single resonance frequency component. Moreover, the compaction experiment showed that the roller with two resonance frequency components provided better compaction strength and compaction depth than the traditional vibratory roller. In road construction, the DFV roller would be able to improve the efficiency of compaction and the compaction quality of the pavement, ultimately increasing pavement life.