Tell you, how many times or how many hammers the Hydraulic impact rammer can hit at a time is not the right answer once and for all. There are many external factors that affect the construction quality of the project. There may be five levels, such as "materials, machinery, methods, environment and personnel". The problems in one stage of these five levels will affect the construction quality.
As for the rapid impact compactor, although the operators and industrial equipment are easy to fix, once the construction environment changes, the construction method or construction process may change due to the influence and constraints of external factors such as the characteristics of foundation materials, water content, and pavement construction regulations.
First of all, the hydraulic compactor is also called "rapid impact compactor". High speed is also one of its key characteristics. Here, high speed refers to high operating frequency. The working frequency of rapid impact compactor depends on the design capacity and equipment conditions of the equipment itself, but it is also affected by the oil supply capacity of the oil pump of the bearing equipment of the hydraulic compactor (cutter or excavator). The working frequency of tamping God high-speed hydraulic compactor is 30-80 times per minute, which can be divided into three gears, namely low, medium and high-grade. For example, the rated tamping energy of hc36 high-speed hydraulic compactor is 36kj (6-36kj in automatic mode, 3-gear, adjustable, arbitrary in manual mode), the instantaneous grounding pressure (pressure) when using a standard tamper plate with a diameter of 1m is~2.5mpa, and the instantaneous grounding pressure when using a tamper plate with a diameter of 0.78m is greater than 4MPa, Generally, it is used in complete set with 5T loader.
Compaction frequency is directly related to the basic compaction degree of compaction, and it is the key factor affecting the particle motion state of compacted foundation material.
In actual construction, it is difficult to determine the actual variable value of hydraulic compaction frequency due to the different grade, structure and physical characteristics of soil. Therefore, the construction of rapid impact compactor cannot completely rely on the old construction technology, and the compaction test before construction is very necessary.
Of course, the construction party or the designer can also summarize and accumulate more construction experience. In the process of construction, if you encounter construction requirements close to the previous construction environment and construction regulations, you can refer to the previous construction experiment records to determine how many hammers the rapid impact compactor will hit at a time.
Generally speaking, the more effective and appropriate method in the construction of rapid impact compactor is to determine the number of hammers hit by the rapid impact compactor at a time and the accurate strike frequency according to the test section, that is, through test compaction.
