Construction advantages of loader hydraulic rammer, introduction to construction process of hydraulic rammer manufacturers Loader hydraulic rammer is an indispensable mechanical equipment for new construction projects that has been widely used in recent years.
Effect picture of hydraulic ramming.
6.
In the tunnel section, pressure is applied to the base of the culvert back once, and for other parts, pressure is applied once every 2m of filling height.
The tamping area shall be marked with gray line signs.
Specific construction method and process of loader hydraulic compactor: 1.
3.
Each three layers of filling subgrade shall be reinforced once with hydraulic rammer structure.
5.
Standard specifications for tamping: three times of tamping is taken as one time, and the error value of the corresponding tamping settlement of the following and previous times is less than 10 mm as the basis for testing the compactness of sand filling (because there is usually 5~10 cm of loose soil impacted after tamping, which is usually determined according to practical experience).
It is qualified if there is no obvious mark after compaction and the flatness meets the requirements.
Detection and processing of impact loose soil The compactness of the bottom layer of the compacted structure reinforcement shall be tested in depth, and the loose soil caused by impact shall be cleaned manually after the compactness is qualified.
It has the following advantages: First, it has great construction energy for impact compaction projects; 2、 Impact compaction has a high impact; 3、 The construction effect of impact compaction works is obvious; 4、 The construction efficiency of impact compaction works is high.
The hydraulic rammer shall be used to tamp 50 meters deep at the edge of the structure.
4.
The distance between the edge of the rammer and the structures is more than 50 cm.
According to the tamping sequence, the hydraulic tamping shall be in place, and the rammer shall be adjusted to strong gear for further tamping.
Through the external tamping test, the strong tamping of each tamping point is 6-9 (the tamping energy is higher than 36 kJ).
The filling subgrade of bridge back and culvert back shall be symmetrical and layered according to the requirements.
At the bridgehead section, the abutment back base shall be pressurized once, the roadbed wall shall be pressurized once, and the rest shall be pressurized once every 2m of filling height.
Tamping sequence: from the inside to the outside of the tunnel, and from one side to the other.
2.
Use gray line signs to mark the back filling area.
Generally, the thickness of loose paving shall be controlled at about 0.2m, and the moisture content of filler shall be strictly controlled.
The tamping point is close to the foundation of the tamping point.
