For road construction, impact compactors are also well-known. What is an impact compactor? Impact compactor is a type of rolling equipment with a triangular or pentagonal shape. The impact compaction technology used by the impact compactor is a technique that uses non-circular, high-power, continuous rolling impact compaction to compact road surfaces and roadbeds.
The construction method of impact compactor compaction refers to the use of an impact compactor to compact the compaction surface. Its main function is to improve the compactness and fragmentation of the compacted object. The application of impact compactor compaction technology for pre filling compaction, filling compaction, excavation compaction, and reinforcement of roadbeds has the advantages of fast construction speed, high construction efficiency, and low construction costs. It can effectively reduce settlement, improve roadbed compaction and overall strength, and reduce early damage to highways.
There are many construction methods for impact compactors, and today we will focus on introducing the "paper clip loop running" route construction method.
The "paper clip loop running" route, as the name suggests, resembles the walking route of a paper clip in the back and forth loop rolling of an impact compactor. The "paper clip loop running" route is suitable for large-scale construction, and generally speaking, the width of the site needs to exceed 24 meters.
The impact compactors currently used in China are all trailer impact rollers, with 3-5 sided impact rolling machinery wheels working under the traction of dedicated tractors. This requires a large turning radius for the overall equipment of the impact roller, with a turning radius of 6 meters and a diameter of 12 meters.
In the article on the definition of the number of passes of an impact compactor, we know that the calculated rolling width for one pass of the impact compactor is 2m. After one round of rolling with the wrong width, the rolling width is calculated as 4m. According to this standard, if the entire site is rolled once, it will be counted as one pass.
In this way, the impact compactor completed 6 large circles and just walked out of the impact compactor with a turning diameter of 12 meters.
A larger site is suitable for implementing the "paper clip loop" route, and combining the principles of staggered rotation and staggered rolling can achieve good impact compaction construction results.
The impact compactor compaction method, as a low-energy shallow reinforcement method, is the latest development in geotechnical engineering compaction technology. There is currently no mature experience in using impact compactors to compact large areas of weak foundations in China. After soft foundation treatment, the high fill roadbed is reinforced by impact compactors. In addition to conventional control measures such as rolling times, compaction degree, and deflection, deformation monitoring of the roadbed during the construction period is also carried out to ensure that the engineering quality and progress requirements are met on the basis of engineering safety.
The discussion on the construction method and quality control measures of impact compaction machine shows that the plum blossom roller has significant advantages in construction, not only improving the compaction quality, but also accelerating the construction progress. Of course, this method also has some shortcomings. Only by accurately grasping the construction process of the impact compactor can we save time and ensure construction quality, achieving twice the result with half the effort.
