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System for testing quality of cast in place concrete pile

A detection system and cast-in-place pile technology, applied in the direction of analyzing solids using sound waves/ultrasonic waves/infrasonic waves, can solve problems such as low measurement efficiency, moving depth errors, false anomalies, etc., and achieve the effect of improving quality detection accuracy and measurement efficiency

Inactive Publication Date: 2008-06-18
SHANDONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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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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Embodiment Construction

[0019] refer to figure 1 , figure 2 , illustrating 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 printing of processing results. Ultrasonic transmitter 3 generates high-voltage pulses, and excites transmitting transducer 1 to generate ultrasonic waves. Ultrasonic transmitting transducer 1 is placed in the embedded conduit 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 the tube shell at an interval of 10cm to form an ultrasonic transducer group 2, which is put into the pre-embedded conduit B of another concrete pile with a rope to receive ultrasonic waves; and a depth encoder 4 controlled by a pulley is placed at the orifice, The coordinate file generated by the lifting depth coordinates of the transducer is stored...

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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, in particular to an ultrasonic detection system for detecting the pouring quality of concrete pouring piles. Background technique [0002] At present, the cross-hole ultrasonic CT detector (or speed CT detector) of concrete pouring piles adopts the single-shot and single-receive working mode, that is, the ultrasonic waves are emitted at a fixed point in one hole, and point by point at a certain interval within a certain depth range of the other hole. Receive the ultrasonic wave, measure the first arrival time of the wave, and obtain the velocity reconstruction image of the section between the holes (called velocity CT) through the special CT software, so as to know whether there are such things as mud inclusion, broken pile, neck expansion, necking, etc. in the pile body. Hollow, segregation and other defects. At present, the speed CT detection instrument used in the quality detection of con...

Claims

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Application Information

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