Instrument for detecting dense state of existing roadbed

Abstract

The invention discloses an instrument for detecting a dense state of an existing roadbed. The instrument comprises a probe rod, a data acquisition device and an electronic testing device, wherein an angle adjusting device is arranged at the bottom of the data acquisition device, and a guide frame is arranged on a side part of the data acquisition device; the probe rod is inserted into the guide frame; a conical probe is arranged at the lower end of the probe rod, and an energy measuring device is arranged at the upper end of the probe rod; a stay cord type displacement sensor and an angle sensor are arranged in the data acquisition device, and a stay cord of the stay cord type displacement sensor is connected with a side handle of the energy measuring device; and the energy measuring device, the stay cord type displacement sensor and the angle sensor are connected with the electronic testing device through the data acquisition device. The instrument can be used for detecting the dense state of the existing railway roadbed under the condition that the operation of trains is not influenced, and has important meaning for perfecting a railway roadbed compaction quality detection technology and a roadbed public works engineering maintenance technology. The detection instrument is portable, convenient to use, high in detection speed and reliable in data, does not cause damage, cannot interfere with train working, can be used for detecting a roadbed soil body from a roadbed surface and a roadbed slope surface, and is suitable for detecting and evaluating the dense state of a ballast rail roadbed and ballast-less rail roadbed of the existing railway.

Description

technical field [0001] The invention relates to a detection device, in particular to an existing roadbed compact state detector. Background technique [0002] The subgrade is a geotechnical structure made of earth-rock bulk materials. Due to the influence of train load and natural environment, subgrade diseases are inevitable. The premise of disease remediation lies in the detection and evaluation of the existing foundation bed, foundation and other parts, their fillings, and soil conditions. However, due to the constraints of heavy train transportation and complex track structure, it is difficult to conduct a large number of tests on the subgrade. [0003] At present, the static force, dynamic sounding, wave velocity method, nuclear ray method and ground radar detection and other detection methods used for the existing railway subgrade have shortcomings, and it is difficult to apply to the detection and evaluation of the dense state of the existing railway subgrade. Conte...

AI Technical Summary

Problems solved by technology

The premise of disease remediation lies in the detection and evaluation of the existing foundation bed, foundation and other parts, their fillings, and the state of the soil. However, due to the constraints of heavy train transportation and complex track structure, it is difficult to conduct a large number of tests on the subgrade.

[0003] At present, the detection methods such as static force, dynamic sounding, wave velocity method, nuclear ray method and ground radar detection used for the existing railway subgrade have shortcomings, and it is difficult to apply to the detection and evaluation of the dense state of the existing railway subgrade

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