Rapid detection device for detecting compaction degree of backfill soil through sand filling method

Abstract

The invention discloses a rapid detection device for detecting the compaction degree of backfill soil by a sand filling method, which comprises a framework and sampling cylinder assemblies, the framework is a long-strip profile, a vertically through sliding groove is arranged in the framework along the length direction, and a plurality of uniformly distributed sampling cylinder assemblies are slidably connected in the sliding groove in a matched manner. The sampling cylinder assemblies and a sliding block assembly are arranged on the lower portion and the upper portion of the framework respectively and penetrate through the sliding groove to be connected together, a plurality of hydraulic rods are distributed below the front side and the rear side of the framework in the length direction of the framework, cylinder bodies of the hydraulic rods are fixedly connected with the framework, and when piston rods of the hydraulic rods face downwards and extend longest, the lowermost ends of the hydraulic rods are longer than the lowermost ends of the sampling cylinder assemblies. Compared with the prior art, soil at multiple positions can be detected at the same time, it can be guaranteed that the sampling distance is uniform, the testing efficiency is high, errors are small, and the accuracy is high.

Description

technical field [0001] The invention relates to the technical field of civil engineering detection devices, in particular to a rapid detection device for detecting the compactness of backfill soil by sand filling method. Background technique [0002] In the process of subgrade lime soil construction, the detection of compaction degree is the most important quality control. If the compaction degree detection value is unqualified, it will greatly affect the overall construction quality of the road surface, and will result in a short period of time. Structural damage to the road surface, network cracks, potholes and other diseases appear on the road surface. [0003] In the process of roadbed lime-soil construction, the degree of compaction is usually tested using the sand filling method given in the "On-site Test Regulations for Highway Subgrade Pavement" (JTGE60-2008). The so-called sand filling method to detect the degree of compaction is to replace the compacted soil sampl...

AI Technical Summary

Problems solved by technology

If it is designed as a two-way four-lane, then one point should be selected as the test point in each design lane on a cross-section of the roadbed to be inspected. Therefore, a large number of test points need to be selected for each test to ensure accuracy and make the test work Longer construction period

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