A rapid detection method for the void degree of the seam

Abstract

The invention provides a rapid detection method for disengagement degree of a gap and a liquid injection device, belonging to the field of steel rail detection equipment. The rapid detection method for the disengagement degree of the gap is used for detecting the disengagement degree of a gap between track structural layers and comprises the following steps: measuring the width b of the gap; alongthe length direction of the gap, embedding a liquid injection pipe into the interior of the gap, and sealing the gap along the length direction of the gap, wherein an observation hole is also arranged above the gap; filling the interior of the gap, after liquid flows out the observation hole, stopping filling, and metering volume V of the liquid injected into the gap; calculating the area S1 of the gap according to a formula that S1=V / b; and calculating the disengagement degree N of the gap by virtue of the area S of a track board according to a formula that N=S1 / S*100%. By adopting the rapiddetection method for the disengagement degree of the gap and the liquid injection device, detection accuracy can be improved, and the cost of manpower and material resources can be reduced.

Description

technical field [0001] The invention relates to the field of rail detection equipment, in particular to a method for quickly detecting the degree of gap-free space. Background technique [0002] At present, the existing detection methods for the degree of separation between layers of CRTS III ballastless track structure are very limited. The existence of dense steel bars inside the track slab, the presence of impurities such as internal moisture, stripped concrete residue, and mud make it almost impossible for the above test methods to effectively measure the degree of voiding from the joint. (2) Destructive testing: core sampling is required on site. Since the width distribution of the separation gap cannot be uniform, this method not only has a large workload, but also cannot accurately give effective evaluation measurements. [0003] Using the method of injecting liquid to fill the gap between the layers of the track structure can measure the void degree relatively simpl...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing detection methods for the degree of separation between layers of CRTS III ballastless track structure are very limited. The existence of dense steel bars inside the track slab, the presence of impurities such as internal moisture, stripped concrete residue, and mud make it almost impossible for the above test methods to effectively measure the degree of voiding from the joint

(2) Destructive testing: core sampling is required on site. Since the width distribution of the separation gap cannot be uniform, this method not only has a large workload, but also cannot accurately give effective evaluation measurements.

[0003] Using the method of injecting liquid to fill the gap between the layers of the track structure can measure the void degree relatively simply, but it is easy to make mistakes during the measurement, resulting in re-measurement, which is time-consuming and labor-intensive

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