System for testing quality of cast in place concrete pile

A detection system and a technology for cast-in-place piles, which are applied to measurement devices, use sonic/ultrasonic/infrasonic waves to analyze solids, and use sonic/ultrasonic/infrasonic waves for material analysis, etc., and can solve problems such as low measurement efficiency, moving depth errors, and false anomalies. , to achieve the effect of improving quality inspection accuracy and measurement efficiency

Inactive Publication Date: 2005-11-16
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

For some defects, such as segregation, honeycomb pores, low-strength areas of pile heads, etc., the sound wave velocity does not change much, especially when the defect range is small, the detection accuracy is relatively low, and velocity CT sometimes misses detection
[0004] (2) This kind of detection instrument adopts single-channel receiving point-by-point moving measurement method, the measurement efficiency is low, and it is easy to generate moving depth errors and false anomalies

Method used

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  • System for testing quality of cast in place concrete pile
  • System for testing quality of cast in place concrete pile
  • System for testing quality of cast in place concrete pile

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[0019] Refer to figure 1 , figure 2 , To explain the system composition and working principle process of the embodiment of the present invention.

[0020] figure 1 Among them, the industrial microcomputer system 6 is used for data processing and display and printing of processing results. The ultrasonic transmitter 3 generates high-voltage pulses to excite the transmitter transducer 1 to generate ultrasonic waves. The ultrasonic transmitter transducer 1 is placed in the embedded pipe A of the concrete pile and radiates ultrasonic waves to the pile medium. In this embodiment, four receivers are used. The transducers are assembled in a tube shell with an interval of 10cm to form an ultrasonic transducer group 2, which is put into the embedded pipe B of another concrete pile with a rope to receive ultrasonic waves; and a depth encoder 4 controlled by a pulley is installed at the orifice, The coordinate file generated by the lifting depth coordinate of the transducer is stored in t...

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Abstract

A quality detection system of concrete pile comprises ultrasonic wave emitting device, data processing unit, ultrasonic wave receiving device, data collector and depth counting coder, The ultrasonic wave receiving device is composed of receiving transverter formed by multiple ultrasonic wave transverters; the data collector is composed of I / O interface circuit, synchronous circuit, amplification - attenuation circuit and multichannel A / D collection plate; the depth counting coder is used to control position of transverter in guide tube for ensuring measurement accuracy.

Description

Technical field [0001] The invention belongs to an ultrasonic detection instrument, and particularly relates to an ultrasonic detection system for detecting the pouring quality of concrete cast-in-place piles. Background technique [0002] At present, the cross-hole ultrasonic CT detector for concrete cast-in-place piles (or speed CT detector) adopts a single-shot and single-receive working mode, that is, ultrasonic waves are emitted from a fixed point in one hole, and point by point at a certain interval within a certain depth of another hole Receive ultrasound, measure the first arrival time of the wave, and obtain the velocity reconstruction image of the cross-hole section through the dedicated CT software (called velocity CT), so as to understand whether there are such things as mud, broken pile, neck expansion, necking, etc. Defects such as voids and segregation. The current speed CT inspection instrument used in the quality inspection of concrete cast-in-place piles mainly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04
Inventor 于师建刘春生
Owner SHANDONG UNIV OF SCI & TECH
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