Apparatus and method for measuring burial depth of guard rail steel pipe post by employing elastic wave

Abstract

Disclosed are an apparatus and a method for detecting the burying depth of guard steel bar columns with shock elasticity wave. A sensor is provided on the side wall of the guard steel bar, when the elastic wave emitted from shock hammer is transferred to the other end of the column along with the axis of the column and is reflected back by this end, the elastic wave signal detected by the sensor is amplified by charge amplifier, and is transmitted into digital signal for calculating and displaying on computer terminal after going through channel base and analog / digital converting card. The inventive method comprises: employing the reflection of shock elastic wave between the two ends of the buried steel tube, identifying steel tube's burying depth by analyzing the characteristics of the reflecting wave.

Description

technical field [0001] The invention belongs to the field of road traffic safety facilities, and in particular relates to a detection device and a detection method for measuring the buried depth of guardrail steel pipe columns by using shock elastic waves. Background technique [0002] Judging from the completed expressway projects, the quality of most projects has met the standard requirements, but due to limited technical means, some projects have hidden dangers in hidden projects, and safety issues are worrying. For example, the serious consequences caused by the serious lack of buried depth of highway guardrail columns have aroused people's great attention. [0003] The outer guardrail of the expressway is called "the driver's last safety belt", which effectively reduces the impact of the vehicle, slows down the speed of the vehicle, and prevents the vehicle from rushing out of the roadbed. Therefore, the guardrails, columns and even the screws and bolts used are strictl...

AI Technical Summary

Problems solved by technology

The entire road section has the phenomenon that the column length of the buried part is not enough to varying degrees

[0004] In the past, because there was no corresponding testing technology and equipment, it was impossible to test hidden projects such as guardrails buried in the ground, so that the projects that did not meet the construction quality requirements passed the acceptance, which brought serious traffic safety hazards in the future. From the above example It can be simply inferred that other expressways have the same problem in the acceptance check. By the end of 2004, the mileage of expressways in my country had reached 35,200 kilometers. According to the national expressway network construction plan, in the next 30 years, my country will usher in a climax of expressway construction, forming The 85,000-kilometer national expressway network, every expressway is inseparable from the embedment and detection of guardrail columns, so research and development of how to use the easiest method to check and test the embedment depth of the guardrail column steel pipes that have been set up, and at the same time Without destroying the structure of the guardrail, it becomes an urgent problem to be solved in engineering acceptance and safety inspection

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