Ballastless track slab downward filling layer strength detection device

Abstract

The invention discloses a ballastless track slab downward filling layer strength detection device which comprises a sensor shell fixed on a sensor base, wherein a pressure sensor is arranged in the sensor shell; a through hole is formed in the middle of the sensor base; a pressure head is arranged at the front end of the pressure sensor and is arranged in the through hole; a pressurization device is arranged at the rear end of the pressure sensor; the pressure sensor is connected with a displacement sensor; the pressure sensor and the displacement sensor are electrically connected with a tester host; the sensor base is used for being fixed on the side surface of a ballastless track slab downward filling template; and the pressure head is contacted with the ballastless track slab downward filling layer. The device is light in instrument, convenient to use, easy to operate, high in detection speed, and accurate and objective in data, the detection result can be automatically printed and stored, and the construction quality of the ballastless track slab downward filling layer is improved.

Description

technical field [0001] The invention relates to a filling layer strength detection device, in particular to a filling layer strength detection device under a ballastless track slab. Background technique [0002] The structural layer poured between the positioned track slab (turnout slab) and the concrete base or support layer is the sub-slab filling layer; the filling material is cement emulsified asphalt mortar (CA mortar), or self-compacting concrete, or other new materials . After the filling material is poured and its compressive strength meets the requirements of the relevant standards, the supporting bolts can be removed, or the track slab can be loaded. For example, after the cement emulsified asphalt mortar filling material is poured under the CRTS1 type slab ballastless track slab, the support bolts can only be removed when the compressive strength of the mortar reaches 0.1MPa or more, and the track slab can bear load when the compressive strength reaches 0.7MPa or...

AI Technical Summary

Problems solved by technology

[0004] Due to the differences in the maintenance conditions of the indoor test pieces and the field, it is difficult to accurately reflect the strength of the filling layer under the ballastless track slab by making test pieces for each shift; Deviations occur due to differences in finger pressure and experience. This method is a qualitative test of the strength of the filling layer based on experience. It is difficult to accurately and objectively test the strength of the filling layer under the ballastless track slab.

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