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Control method and control device of multi-section tomography detection of foundation piles

A tomography, multi-section technique, used in basic structure engineering, testing of basic structures, analysis of solids using acoustic/ultrasonic/infrasonic waves, etc.

Active Publication Date: 2014-04-09
武汉中岩科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the use cost in the actual detection work is mainly caused by the damage of the launch sensor, which is related to the number of launches of the launch sensor

Method used

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  • Control method and control device of multi-section tomography detection of foundation piles
  • Control method and control device of multi-section tomography detection of foundation piles
  • Control method and control device of multi-section tomography detection of foundation piles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] Pile inspection of four acoustic tubes. The length of the pile is 50m, and the acoustic tube numbers are 1, 2, 3, 4. There are 4 acoustic wave sensor groups S(1), S(2), S(3), and S(4), and the i-th acoustic wave sensor group consists of 3 Receiving sensors S(i1), S(i2), S(i3) and a receiving and transmitting duplex sensor Sd(i) are composed, and the distance between sensors is 0.10m.

[0111] A multi-section tomography (CT) detection and control method for foundation piles based on the acoustic wave transmission method, the steps of which are:

[0112] 01. Place the 4 acoustic wave sensor groups S(i) respectively at the bottom of the 4 acoustic tubes of the foundation pile, see image 3 . The 4 acoustic wave sensor groups S(i) are respectively connected with the 4 detection modules K(i) of the acoustic wave instrument I, and the cables of the 4 acoustic wave sensor groups S(i) can drive the height position encoder FMA to roll during the synchronous lifting process. ;...

Embodiment 2

[0140] according to Figure 5 , Image 6 It can be seen that a multi-section tomography (CT) detection control device suitable for foundation pile detection with four acoustic tubes buried: it consists of an acoustic wave instrument I, a height position encoder FMA, and four acoustic wave sensor groups S (1 ), S(2), S(3), and S(4). Among them, the acoustic wave instrument I is composed of a computer system C, a control unit P, and 4 detection modules K (1), K (2), K (3), and K (4). Each detection module K (i) (i =1,...,4) are composed of 3 receiving channels Tr(ij) (j=1, 2, 3), 1 transmitting and receiving duplex channel Td(i), and the transmitting and receiving duplex channel Td(i) It consists of 1 receiving channel Tr(i), 1 acoustic wave transmitter A(i), and each acoustic wave sensor group S(i) (i=1, 2, 3, 4) consists of 3 acoustic wave receiving sensors Sr (ij ) (j=1, 2, 3), a sound wave transmitting and receiving duplex sensor Sd(i). Three acoustic wave receiving sens...

Embodiment 3

[0146] A half-duplex connection mode between a transmit-receive duplex channel Td(i) and a receive-transmit duplex sensor in the prior art. See Figure 7 . The transmitting and receiving duplex channel Td(i) has only one set of piezoelectric devices Crys1. When set to the transmitting state, the control module P controls R(i1) to be closed and R(i2) to be disconnected, and the corresponding acoustic wave transmitter A(i) is connected to the piezoelectric device Crys1 of the receiving and transmitting duplex sensor Sd(i), The corresponding receive channel Tr(i) is disconnected from the piezoelectric device Crys1 of the receive-transmit duplex sensor Sd(i). When set to the receiving state, the control module P controls R(i1) to be disconnected and R(i2) to be closed, and the corresponding acoustic wave transmitter A(i) is disconnected from the piezoelectric device Crys1 of the receiving and transmitting duplex sensor Sd(i) , the corresponding receiving channel Tr(i) is connec...

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Abstract

The invention discloses a control method and a control device of multi-section tomography detection of foundation piles. The control method comprises the following steps: A. acoustic sensor groups are respectively placed on bottom of a sounding pipe and are connected with a detecting module of an acoustic instrument, wherein cables of the acoustic sensor groups can drive a height position coder to roll in a synchronous lifting process; B. a computer system sets parameters; C. a control unit detects the height position of the current detection point according to the parameters set by the computer system; and D. the acoustic sensor groups are synchronously lift, wherein the cables of the acoustic sensor groups drive the height position coder, the control unit reads the position output by the height position coder and executes the step C when arriving at the height position of the detection point. The device is composed of the acoustic instrument, the height position coder and the acoustic sensor groups, the detection efficiency is high, and the device can control the acoustic instrument to finish the osite tomography detection work of all sections formed by M sounding pipes within a lifting detection process so as to reduce the failure rate of the detection device and improve the onsite detection efficiency.

Description

technical field [0001] The invention belongs to the technical field of detecting the integrity of foundation piles using acoustic transmission tomography (CT) in the field of geotechnical engineering detection, and more specifically relates to a multi-section tomography (CT) detection of foundation piles based on acoustic transmission The control method also relates to a foundation pile multi-section tomography (CT) detection control device based on the acoustic wave transmission method. Background technique [0002] Testing the Integrity of Foundation Pile by Acoustic Transmission Method [0003] The sound wave transmission method is used to detect the integrity of the poured foundation pile. Before pouring concrete, M (2≤M) acoustic measuring tubes parallel to each other should be placed on the reinforcement cage of the foundation pile. The length of the acoustic measuring tube is equal to the length of the pile. (The length of the reinforcement cage) is the same. After t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/06E02D33/00
Inventor 张杰杨永波胡纯军张喻邹宇
Owner 武汉中岩科技股份有限公司
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