1. Differences in power transmission mechanism
Vibratory rollers drive the eccentric rotor to generate high-frequency vibrations through a hydraulic system, and achieve composite compaction in combination with the deadweight of the steel wheel. Its vibration waves can penetrate deep materials, significantly reducing the friction resistance between particles. Static pressure equipment relies on alternating rolling of steel wheels and pneumatic tires to complete material compaction through continuous static load.
2. Comparison of engineering adaptability
1. Material applicability: Vibration models have advantages for coarse-grained materials such as sand, gravel, and asphalt, and their excitation frequency is usually adjustable in the range of 25-50Hz; static pressure models are more suitable for final pressure operations of thin layers of asphalt, RCC and other fine materials
2. Adaptability to working conditions: Vibration models are efficient in large-thickness filling projects such as roadbeds and embankments, while static pressure models are more advantageous in fine working scenarios such as municipal roads and airport runways
3. Key points for construction quality control
Vibratory rollers need to adjust the amplitude (usually 0.3-2mm) and frequency according to the type of material to avoid over-vibration and aggregate crushing. Static pressure models should control the tire pressure in the range of 300-500kPa, and the steel wheel should be kept clean to prevent material adhesion.
4. Precautions for special working conditions
When approaching sensitive buildings, the vibration function should be turned off and the static pressure mode should be used. For special materials such as modified asphalt, static pressure models need to be equipped with an automatic sprinkler system to prevent wheel hub adhesion. When the vibration type is working on the slope, the rolling principle of “from low to high” should be followed.
5. Equipment selection decision factors
For base layer compaction, 10-18 ton vibratory rollers are preferred, and 8-12 ton static pressure equipment is recommended for surface layer final compaction. For composite structure layer construction, a combination of vibration + static pressure can be used.
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Post time: Jul-23-2025