Can rapid impact compaction process collapsible loess? What are the application areas of rapid impact compactors?

Rapid impact compaction machine can be used to deal with collapsible loess, and through the collection of data, it is found that relevant experts have done tests and reached corresponding conclusions. You can search and understand the specific construction methods and test data by yourself. The conclusions are as follows. Show it to everyone, I hope it can bring some help.

Experimental conclusion of rapid impact compaction for collapsible loess

On the basis of collecting and analyzing the data of predecessors, the compaction effect of rapid impact compaction of collapsible loess was studied through the indoor collapsibility test and the field test of flat plate static load and heavy-duty cone dynamic penetration, and the following understandings were obtained:

(1) According to the results of the indoor collapsibility test, the collapsibility of the loess-like silty clay within 5m depth has been eliminated after the rapid impact compaction machine treatment of the foundation.

(2) According to the results of the plate static load test, after the rapid impact compaction equipment treatment of the foundation, the characteristic values of the foundation bearing capacity all reach the design requirement of 200kPa, and the cumulative settlement is 8.53-25.50mm.

(3) According to the results of the heavy-duty cone dynamic penetration test, after the rapid impact compactors treat the foundation, the characteristic values of the foundation bearing capacity all reach the design requirement of 200kPa.

This study analyzes the effect of rapid impact compaction technology on eliminating the collapsibility of loess, and verifies its reinforcement effect. The research results have generalization for the use of hydraulic compaction instead of lime soil and ordinary dynamic compaction in collapsible loess sites for construction. , which is helpful for the more scientific application of rapid impact compaction  technology in collapsible loess and other soft soil layers.

The above is the conclusion of rapid impact compaction equipment to deal with collapsible loess. Rapid impact compaction is also called rapid impact compactor. It is a compaction machine manufactured through electromechanical-hydraulic integration technology. feature.

Rapid impact compactors are mainly used in abutment backs, culvert sides, roadbeds, building foundations, etc. to improve work efficiency and ensure project quality. rapid impact compaction equipment is mainly composed of rammer frame, rammer, rammer plate, buffer device, hydraulic system and electronic control system. Rapid impact compactor is mainly used in ports, airports, stations, highways, railways and other fields or scenarios. It can prevent the occurrence of common quality problems such as jumping at the bridge head when used in the background of the bridge abutment.

The models of rapid impact compaction machine mainly include HC04, HC08, HC12, HC16, HC20, HC36, HC42, HC60, HC84, and HC150, of which HC36 and HC42 are used more frequently. After the rapid impact compaction is used to reinforce the back of the structure, it can effectively reduce the natural settlement in the later stage, improve the bearing capacity of the soil, and prevent concrete structures (rigid structures) such as roadbeds, pavements (flexible structures), bridges, culverts, and retaining walls (rigid structures). Differential settlement occurs at the junction, and diseases such as "jumping on the bridge platform" occur. The technology of rapid impact compaction and reinforcement of the back wall of the concrete structure platform will significantly improve and improve the stabilization effect of the backfill soil of the bridge abutment, and lay a solid foundation for avoiding the occurrence of diseases such as "abutment jumping" and "pavement subsidence" as much as possible. The basics.

At present, the research direction of rapid impact compaction is mainly in the reinforcement of roadbed, the back of bridge and culvert, and the analysis of soil compaction effect. However, there are relatively few applications and researches in soft soil layers such as collapsible loess. Bring inspiration or help, and hope that rapid impact compaction technology can play a role in various fields.