Continuous railroad bed compaction quality monitoring and controlling system and working method

Abstract

The invention relates to a continuous railroad bed compaction quality monitoring and controlling system and a working method. At present, the railroad filling engineering compaction quality is detected and controlled by using a regular dot-mode sampling detection method which is carried out after rolling compaction, namely, detection after working, so as not to realize the real-time control on the overall rolling compaction process. The continuous railroad bed compaction quality monitoring and controlling system comprises a singlechip (1), wherein the singlechip (1) is respectively connected with a ferroelectric memory (2), an A / D (analog-to-digital) converter (3), a color liquid crystal display circuit (4), a global positioning system (GPS) module (5), a general packet radio service (GPRS) module (6), a clock chip (7), an electrically-erasable programmable read-only memory (8), a secure digital (SD) card (9), a universal serial bus (USB) interface circuit (10), a keyboard circuit (11) and a square wave switching circuit (12); the A / D converter is connected with a voltage conversion circuit (13) and a signal processing circuit (14); and the square wave conversion circuit is connected with the signal processing circuit. The continuous railroad bed compaction quality monitoring and controlling system is used for continuous railroad bed compaction quality monitoring and controlling.

Description

Technical field: [0001] The invention relates to a continuous compaction quality monitoring and control system and working method of railway subgrade. Background technique: [0002] The subgrade is the foundation of the railway, which is related to the safe and efficient operation of the railway. The subgrade is the foundation of the track structure. With the increase of train speed, the subgrade structure is required to provide a smoother and more stable support for the superstructure. The compaction quality of the subgrade filling project is the foundation of determining its structural performance. The compaction quality of the subgrade includes three aspects: the degree of compaction, the uniformity of compaction and the stability of compaction. At present, for the detection and control of the compaction quality of subgrade filling projects, the conventional "point-type" sampling detection method is adopted, that is, after the completion of rolling of each layer, randoml...

AI Technical Summary

Problems solved by technology

In fact, due to the variation of the filler itself, the variation of the subgrade structure performance, the uneven compaction force caused by the random fluctuation of the exciting force of the vibratory roller, and the variation of the subgrade performance caused by the uneven stiffness of the underlying layer within the measurement depth range, etc. The reason is that it is difficult to ensure that the subgrade performance parameters obey the normal distribution law, so the detection results of the conventional "point" sampling method may not be representative

[0004] (2) The detection results of the "point" sampling detection method only reflect the local quality characteristics near the detection point of the subgrade surface, and cannot reflect the overall quality characteristics of the subgrade surface outside the vicinity of the detection point, while the overall quality characteristics of the subgrade along the longitudinal direction of the road ( Such as stiffness uniformity) has a great influence on the smoothness of the track during operation

[0005] (3) The "point" sampling detection method is carried out after the rolling is completed, which is a post-work detection, and it is impossible to realize real-time control during the rolling process

At the same time, the point-by-point detection is time-consuming and laborious, which brings obvious interference to the construction process, makes efficient construction equipment unable to play an effective role, seriously affects the construction progress, and is difficult to adapt to the requirements of mechanized construction

[0006] (4) "Point-type" sampling detection method, if the detection results of individual detection points do not meet the specification requirements in the rolling section, it is difficult to define the scope of re-rolling

How to inspect and control the compaction of packing exceeding 7.5cm is not specified;

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