Parameter detection device for surface vibration compaction tester

Abstract

The invention discloses a parameter detection device for a surface vibration compaction tester. The parameter detection device comprises two parts, namely a force detection device and a data acquisition and processing device, wherein the force detection device comprises a force carrying plate, a force sensor and a base plate which are connected in sequence from top to bottom; the upper surface of the force carrying plate is in direct contact with a steel rammer of the surface vibration compaction tester; the force sensor is connected with the data acquisition and processing device; the lower part of the force carrying plate is connected with the force sensor through a ball hinge; the force sensor is used for detecting parameters such as the surface static pressure, the vibration frequency and the excitation force. The parameter detection device has the advantages of being convenient to use, simple to operate, high in detection speed, accurate and objective in data, and capable of automatically printing and storing a detection result, and the test accuracy is improved.

Description

technical field [0001] The invention relates to a detection device, in particular to a parameter detection device of a surface vibration compaction tester. Background technique [0002] The compaction coefficient is an important index to evaluate the compaction quality of the subgrade, and its value is the ratio of the dry density of the field sample to the maximum dry density. The railway engineering geotechnical test regulations and highway geotechnical test regulations stipulate that the maximum dry density of coarse-grained soil can be determined by the surface vibration compaction method. The surface vibration compaction tester mainly includes a vibration motor, a steel rammer, a test tube and a sleeve, etc. During the test, put the sample into the test cylinder, the filling amount should be equal to or slightly lower than 1 / 3 of the height of the cylinder after vibration and compaction, and smooth the surface of the sample; fix the test cylinder on the concrete base, ...

AI Technical Summary

Problems solved by technology

The results of the actual measurement of the technical parameters of the surface vibration compaction tester show that there is a large error between the calculated parameter value and the measured parameter value, which even affects the determination of the maximum dry density test result of coarse-grained soil

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