The model of 60kJ Rapid Impact Compaction is hc60, and the effective depth can reach 2-4 meters. The construction process of hc60 Rapid Impact Compaction is basically the same as that of other models of Rapid Impact Compactions. In actual construction, it is still necessary to determine more accurate construction sequence and construction process according to requirements. Tampon has an experienced R & D technical team, and has some research on road construction, If you need to discuss the construction process or method, you can also contact us.

Construction technology of Rapid Impact Compaction

According to domestic construction technology, the traditional process of subgrade high filling construction aims at impact crushing and strength. These two kinds of equipment are inconvenient, low-cost and inconvenient to manage. Without effective compaction, the accumulation of natural settlement will be inevitable, resulting in subgrade settlement. The hydraulic hammer is quickly released to a certain height through the hydraulic cylinder, and the hammer taps the floor during the accelerated descent time. The Rapid Impact Compaction is installed on the arm of the ordinary loader and can be used for a single or continuous stable working surface. The high-frequency and high-strength consolidation operation will affect the depth of about 3 meters to fully ensure the compaction effect.

Generally, the chassis of the excavator or cutting machine installed with the Rapid Impact Compaction rotates in an arc in the tamping place. During the first tamping, the center spacing of tamping points is 2m, and the middle overlapping position of the first tamping point can be selected for the upper and lower tamping points. After the construction of Rapid Impact Compaction, the road roller can be used for further leveling. Although the high-speed hydraulic tamping machine is relatively small compared with the word tamping equipment, the high-speed tamping frequency of the high-speed hydraulic tamping machine has completely made up for this. 

The tamping kinetic energy per unit area is higher, and the foundation improvement effect is better. The research confirms that the dynamic compaction technology selected by the Rapid Impact Compaction makes up for the gap between the traditional surface compaction technologies, such as rolling, vibration compaction and traditional dynamic compaction technology. The normal compaction depth of the Rapid Impact Compaction can reach 4m, and the maximum impact depth can reach 10m. The compaction depth is more than ten times that of the traditional rolling technology, and three to four times that of the impact rolling technology. It is especially suitable for 3-10 rapid compaction to solve the foundation with a depth of M.

Construction method of Rapid Impact Compaction

1. Test preparation: the test subgrade section must be carried out according to the compaction specification required by the design, and the impact compaction points can be arranged only after the test meets the standard. For the subgrade section of test compaction, impact compaction shall be carried out on the flatness of the site before compaction according to the preparatory works before construction. Compaction, etc. The surface of the filler should be watered as much as possible to avoid dust on the surface, which will affect the transmission of energy to the deep layer.

2. Compaction layout: mark and number with lime on the Subgrade after the construction is completed and tested according to the compaction specification required by the design, and then measure the original elevation of each point according to the number. The Rapid Impact Compaction shall be in place according to the measurement and setting out position, so that the compaction hammer can be aligned.

3. The Rapid Impact Compaction is divided into three working gears: strong, medium and weak according to its compaction energy. Adjust the Rapid Impact Compaction to their respective gears, record the compaction according to different hammer numbers, measure and record the settlement of the compaction point. During construction, the construction gear should be reasonably selected according to the site conditions, such as whether there are tunnels, pipelines below, and whether there are impact restrictions on adjacent structures.

4. Take every three hammers as a group, accumulate and record the settlement of every three hammers.

5. Repeat 3-4 items until the 6th hammer 9 hammer 12 hammers impact compaction, accumulate and record every 3 hammers and record. Determine the number of working hammers according to the test, and finally determine which gear and the corresponding number of compaction hammers have good compaction effect by referring to the test data of the past construction site. It should be noted that the high vibration frequency of the weak gear of the Rapid Impact Compaction can also achieve the desired effect, rather than the compaction effect of the strong gear.

6. After the single tamping point meets the tamping regulations, the mobile machine will carry out the next point of compaction, which generally adopts the linear operation step. The construction position of Rapid Impact Compaction is mainly the rear section of bridge and culvert abutment. In order to promote the movement of the compactor, it is applicable to the straight-line operation steps, that is, each click operation and back and forth operation.

7. The construction of Rapid Impact Compaction is applicable to the layout of clearance working surface: the edge spacing of each compaction point is a certain spacing, which is an equilateral triangle layout, that is, the spacing of each hammer edge is 50cm. The edge spacing of the hammer on the working face of the Rapid Impact Compaction shall be determined according to the field test. According to the test parameters, it is suggested that the center spacing structure of the compaction hammer at the construction point should be set at 80cm, and the edge spacing of the compaction hammer should be 300cm, so as to ensure the structural safety.

Construction quality control of Rapid Impact Compaction

1. The rammer can be lifted only when it is aligned with the tamping point, and the center displacement of the rammer shall not be greater than 5cm;

2. After tamping 15 hammers and 18 hammers, measure and compare them respectively. If the relative tamping settlement difference is greater than 10mm, the tamping times must be added in the unit of 3 hammers until the relative tamping settlement difference between the last 3 hammers and the first three hammers is not greater than 10mm;

3. It shall be reinforced and tamped every 1.5m according to the above method with the filling height;

4. The minimum distance between the outer edge of the ram of the Rapid Impact Compaction and the bridge and culvert structures should be determined according to the field test. It is suggested that the dynamic compaction should be carried out in real time. 5 The minimum distance between the outer edge of the rammer and the bridge and culvert structures shall not be less than 30cm; The compaction operation can be carried out only when the filling thickness at the top of the structure is not less than 2.0m. When the surface of the filler is dry, appropriate amount of water should be sprayed to prevent the surface from dusting and affecting the compaction;

6. After the compaction of the whole working face is completed, the impact virtual soil with a thickness of about 20cm on the subgrade surface must be scraped with machinery, and the smooth wheel roller must cooperate with the small flat plate compactor to compact and flatten;

7. The compaction and reinforcement points on the wall back of the Rapid Impact Compaction are evenly distributed along the distance of 1.5m from the hammer center. The longitudinal coverage is the length along the retaining wall, and the transverse coverage is the filling range behind the wall. The points are arranged in one row, and the edge of the rammer is as close to the wall back as possible;

8. During dynamic compaction, the falling height of the rammer shall be ensured to ensure that the compaction energy can reach 36kj;

9. After tamping with hydraulic tamping machine, there shall be no churning and soft elasticity. Once found, it shall be reworked or replaced immediately;

10. The construction control method summarized in the approved hydraulic ram test section shall be strictly implemented during construction, and the construction shall be carried out with reference to the obtained summary data.

60kJ hydraulic tamping machine, like other hydraulic tamping machines, has the advantages of significant effect, high tamping frequency, good compaction effect, convenient transfer, safety and environmental protection. It is no different from other types of hydraulic tamping machines in terms of construction technology and methods. However, when selecting the model, it is still necessary to determine the appropriate hydraulic tamping machine according to the actual needs. The influence depth of each model of hydraulic tamping machine, matching excavator The model of loader is different. If you don't know how to choose, you can contact us directly, and we will recommend a suitable Rapid Impact Compaction according to your needs.