An Ultrasonic Measurement Method of Relative Displacement Variation of Large Structure
A relative displacement and large-scale structure technology, applied in the direction of using ultrasonic/sonic/infrasonic waves, measuring devices, instruments, etc., can solve the problems of limited accuracy, high cost of GPS measurement, and affecting measurement accuracy, achieving high accuracy and convenient implementation , the effect of simple implementation method
Inactive Publication Date: 2017-11-17
CHONGQING JIAOTONG UNIVERSITY
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Methods such as levels and total stations are manual measurements, which cannot be used for long-term continuous measurement of the structure, and the accuracy is greatly affected by the work experience of the surveyors; the cost of GPS measurement is high, and the accuracy is limited; the installation process of the connecting pipe method is more It is cumbersome, and the liquid in the connecting pipe needs to be replenished regularly to ensure the normal completion of the measurement; the inclinometer method is greatly affected by the use environment and road conditions; the laser image measurement method is sensitive to the light intensity of the surrounding environment, and a strong light environment will affect the measurement precision
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0018] The invention provides an ultrasonic measurement method for the relative displacement variation of a large structure, the method comprising the following steps:
[0019] Step 1) Connect the ultrasonic transmitter S 1 and Ultrasonic Transmitter S 2 Reliably fixed on the point to be tested; the ultrasonic receiver R 1 and ultrasonic receiver R 2 Reliably fixed on fixed points relative to the point to be measured, such as bridge piers, abutments, etc.;
[0020] Step 2) Measure the ultrasonic transmitter S by ultrasonic waves 1 with ultrasonic receiver R 1 the distance L between 1 , ultrasonic transmitter S 1 with ultrasonic receiver R 2 the distance L between 2 , ultrasonic transmitter S 2 with ultrasonic receiver R 1 the distance L between 3 , ultrasonic transmitter S 2 with ultrasonic receiver R 2 the distance L between ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an ultrasonic measuring method for the variation of relative displacement of a large structure, and belongs to the technical field of displacement detection. According to the invention, ultrasonic senders S1 and S2 and ultrasonic receivers R1 and R2 are fixed to corresponding positions, and the distance L1 between the ultrasonic sender S1 and the ultrasonic receiver R1, the distance L2 between the ultrasonic sender S1 and the ultrasonic receiver R2, the distance L3 between the ultrasonic sender S2 and the ultrasonic receiver R1 and the distance L4 between the ultrasonic sender S2 and the ultrasonic receiver R2 are measured in an ultrasonic manner; and then, the vertical distance x between the ultrasonic sender S2 and the ultrasonic receiver R1 is worked out, and the variation of relative displacement of a structure is measured. The ultrasonic measuring method for the variation of relative displacement of a large structure provided by the invention has the characteristics of simple implementation, high precision, easy implementation, and the like.
Description
technical field [0001] The invention belongs to the technical field of displacement detection and relates to an ultrasonic measurement method for the relative displacement variation of a large structure. Background technique [0002] The relative displacement change of a large structure is an important reference quantity for structural safety, and how to quickly and accurately measure the displacement of a large structure is a current research hotspot. [0003] At present, the commonly used methods for large-scale structural displacement monitoring include GPS measurement method, level measurement method, total station measurement method, connecting pipe measurement method, inclinometer method, laser image measurement method, etc. [0004] Levels, total stations and other methods are manual measurements, which cannot be used for long-term continuous measurement of the structure, and the accuracy is greatly affected by the work experience of the surveyors; the cost of GPS mea...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01B17/00
CPCG01B17/00
Inventor 张奔牛
Owner CHONGQING JIAOTONG UNIVERSITY