HC150 rapid impact compactor - Excavator to Boom Rapid Impact Compaction

The price of rapid impact compaction machine is generally more than 100,000 yuan. In some bridge constructions of masonry and enlarged foundation types, hydraulic tamping machine can tamp the foundation and can also be applied to the treatment of culvert foundation. When backfilling bridges and culverts, when large-scale road rollers are used to roll bridges and culverts for backfilling, some corners are often not rolled in place. When some experienced manipulators are laterally rolling close to the abutment (retaining wall), for fear of crashing the abutment (retaining wall), there is often a 3-10 cm portion that is not crushed, so the rapid impact compactor can be fully utilized. Compact features. According to experience, the best effect of compacting 3~4 times is too much waste, and the compaction effect is too little.

For the backfill on both sides of the splayed wall of the cover plate culvert, since there is an included angle compared with the forward direction of the route, the road roller cannot be rolled in place at all, and this position is very important. Usually, it is compacted by hand. The effect is not very ideal. With rapid impact compactor compaction, the effect is obvious. Not only does it compact in place, but it also works well. Therefore, it is very important that the rapid impact compactor cannot roll into place.

For the northern area, due to the influence of winter snowfall in the winter snowfall project, the low-fill and shallow excavation section of the snowmelt in the second spring is prone to difficult situations for the construction unit to handle. For a large area of soft elastic, it may be a problem of engineering design or construction method. For the treatment of soft elastic in a small area, the usual method is to remove the soil in the soft part and backfill in layers, which is difficult to operate. Due to the small area, large rollers are not useful, so it is more difficult to achieve layered backfill. With a rapid impact compaction machine, the problem is easy to solve. The foundation of the elastic soft pit can not only be tamped by hydraulic tamping machine, but also can realize layered backfill and layered compaction, which greatly guarantees the quality of the elastic soft treatment of the roadbed. The practical application of the rapid impact compactor to deal with the softness of the roadbed has achieved satisfactory results.

Bridge jumping is a common quality defect of highway engineering, which brings huge hidden dangers to driving safety. In order to effectively solve the problem of bridge jumping in highway engineering, the highway management department conducted an analysis of the main reasons for the bridge jumping before construction, which is shown as follows: The following points:

(1) The bearing capacity of the bridge and culvert foundation is inconsistent with that of the subgrade base, which leads to a large difference in foundation settlement under the influence of the same load. Generally, the settlement of the bridge and culvert foundation is small and the settlement of the pavement foundation is large;

(2) The compaction degree of the subgrade fill is guaranteed, but under the influence of long-term structural loads and traffic loads, there will still be compression", causing uneven settlement of the structure;

(3) The construction quality of the bridge is poor, and the filling and rolling construction at the bridge head is not carried out under the condition of the optimum moisture content of the soil material, which fails to meet the design requirement of compaction, resulting in subsidence of the roadbed.

Among the above-mentioned main reasons for jumping at the bridge head, the first two factors can be completely solved by strengthening the design, and the third human factor should be solved by improving the quality awareness of construction personnel, strengthening the control of the construction process, and improving the construction technology. To this end, the bridge management department, together with the designer and the construction party, jointly formulated the following improvement measures: set the powder jet pile, sand pile and sand gravel cushion within the design scope of the soft foundation section at the bridge head to form a composite foundation, and play the role of composite foundation replacement and improvement. The vertical drainage of sand piles and the effect of concentrated stress control the overall settlement and improve the bearing capacity of the foundation; a certain proportion of white ash is mixed into the fill of the bridgehead subgrade to reduce the actual water content of the soil and optimize the looseness of the soil structure to improve the soil strength and bearing capacity; in addition, the construction process optimization and construction process control of backfilling of bridge and culvert backfill should also be strengthened.