CN206146872U - Monitoring concrete surface crack 's device - Google Patents

Monitoring concrete surface crack 's device Download PDF

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Publication number
CN206146872U
CN206146872U CN201621203194.6U CN201621203194U CN206146872U CN 206146872 U CN206146872 U CN 206146872U CN 201621203194 U CN201621203194 U CN 201621203194U CN 206146872 U CN206146872 U CN 206146872U
Authority
CN
China
Prior art keywords
crack
foil gauge
wire
terminals
concrete
Prior art date
Application number
CN201621203194.6U
Other languages
Chinese (zh)
Inventor
令永强
周勇
杨校辉
张康康
朱亚薇
罗玉博
师占宾
屈超
Original Assignee
兰州理工大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 兰州理工大学 filed Critical 兰州理工大学
Priority to CN201621203194.6U priority Critical patent/CN206146872U/en
Application granted granted Critical
Publication of CN206146872U publication Critical patent/CN206146872U/en

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Abstract

The utility model provides a monitoring concrete surface crack's device, including foil gage (1), wiring end (2), wire (3), universal meter (4), install in crack (5) top foil gage (1), foil gage (1) and wire (3) is connected on wiring end (2), wire (3) are connected with foil gage (1) and universal meter (4), the resistance that crack (5) development formed foil gage (1) can read through universal meter (4), obtain crack (5) change value and rate of change.

Description

A kind of device of monitoring concrete surface crack

Technical field

This utility model is related to concrete test technology, and in particular to the technology of monitoring concrete surface crack.

Background technology

As the fast development and the continuous expansion of city size of China's modern industry, urban population are sharply increased, this makes Obtain city construction engineering also to continue to increase, and wherein most is reinforced concrete works, armored concrete is due to own material Property, occur small width≤0.4mm cracks in discontinuity, therefore monitor distress in concrete and change and analyze Reason, it appears be even more important, up to now, the monitoring to concrete surface crack mainly has distress in concrete visualizer, Its principle is to realize being observed concrete surface crack by electronic imaging technology, but existing monitoring concrete surface splits The instrument of seam, measured value are easily affected by factors such as survey crew, measurement space and measuring environments, and expensive, Therefore, a kind of to monitor simple and convenient, low price, the testing result little monitoring device that is affected by the external environment urgently occurs.

The content of the invention

The purpose of this utility model is to provide a kind of device of monitoring concrete surface crack.

This utility model is a kind of device of monitoring concrete surface crack, including foil gauge 1, terminals 2, wire 3, ten thousand With table 4, foil gauge 1 is installed on above crack 5, and foil gauge 1 and wire 3 are connected on terminals 2, wire 3 and foil gauge 1 and ten thousand Connected with table 4, the development of crack 5 is formed the resistance of foil gauge 1 and can be read by circuit tester 4, obtain 5 changing value of crack and change speed Rate.

The beneficial effects of the utility model are:Compared with existing Crack Monitoring instrument, this utility model monitor value is accurate, behaviour Make simple and convenient, cost is cheap, and be applied to various environment.

Description of the drawings

Fig. 1 is this utility model structural representation, reference and corresponding entitled:Foil gauge 1, terminals 2, wire 3, circuit tester 4, crack 5.

Specific embodiment

As shown in figure 1, this utility model is a kind of device of monitoring concrete surface crack, including foil gauge 1, terminals 2nd, wire 3, circuit tester 4, foil gauge 1 are installed on above crack 5, and foil gauge 1 and wire 3 are connected on terminals 2, wire 3 with Foil gauge 1 and circuit tester 4 connect, and the development of crack 5 is formed the resistance of foil gauge 1 and can be read by circuit tester 4, is obtained crack 5 and is become Change value and rate of change.

The device of above-described monitoring concrete surface crack, in crack, 5 upper vertical is prefabricated with summary in 5 direction of crack More than the polishing region of foil gauge 1, foil gauge 1 is installed in polishing region.

The device of above-described monitoring concrete surface crack, terminals 2 are installed on the dead ahead of foil gauge 1.

The device of above-described monitoring concrete surface crack, foil gauge 1 and wire 3 are welded to connect and are fixed on terminals On 2.

The device of above-described monitoring concrete surface crack, is coated with silica gel on terminals 2 and foil gauge 1.

The course of work of the present utility model is:Above the crack with polisher grind one piece perpendicular to fractuer direction 5cm × The region of 12cm sizes, polish 1 ~ 2mm of thickness;Alcohol washes polishing region is used, by foil gauge 1 with 502 stickers in polishing region; By terminals 2 with 502 stickers in 1 dead ahead of foil gauge;Foil gauge 1 and wire 3 are connected to into terminals 2 with electric welding pen and welding wire On, the length of wire 3 can be convenient for measuring according to on-site actual situations determines;Silica gel is applied on terminals 2 and foil gauge 1, is made Which is completely covered both.

Circuit tester 4 is transferred to into measurement resistance shelves, conductor wire end is connected to respectively with two test pencils, is spaced in required timeTRepeat Measurement, record theijGeneral-purpose meter reading corresponding to secondary foil gaugeR i R j ,ij=1,2,3 ... ...(ji), note measurement for the first time ValueR 1For foil gauge resistanceR, any changing value of measured value twice.

By formula(1):And formula(2):, obtain crack Changing value and rate of change, changing values of the dL for crack in formula;KGFor foil gauge sensitivity coefficient;LTo strain leaf length;Dv is Crack rate of change;TIt is spaced for time of measuring.

Above-described utility model is only that preferred embodiment of the present utility model is described, not to this reality It is defined with new scope, on the premise of without departing from this utility model design spirit, those skilled in the art are to this reality The various modifications made with new technical scheme and improvement, all should fall into the protection model of this utility model claims determination Enclose.

Claims (5)

1. a kind of device of monitoring concrete surface crack, including foil gauge(1), terminals(2), wire(3), circuit tester(4), It is characterized in that foil gauge(1)It is installed on crack(5)Top, foil gauge(1)And wire(3)It is connected to terminals(2)On, wire (3)With foil gauge(1)And circuit tester(4)Connection, crack(5)Development forms foil gauge(1)Resistance can pass through circuit tester(4)Read Take, obtain crack(5)Changing value and rate of change.
2. it is according to claim 1 monitoring concrete surface crack device, it is characterised in that in crack(5)Upper vertical In crack(5)Direction is prefabricated with slightly larger than foil gauge(1)Polishing region, foil gauge(1)It is installed in polishing region.
3. it is according to claim 1 monitoring concrete surface crack device, it is characterised in that terminals(2)Being installed on should Become piece(1)Dead ahead.
4. it is according to claim 1 monitoring concrete surface crack device, it is characterised in that foil gauge(1)And wire (3)It is welded to connect and is fixed on terminals(2)On.
5. it is according to claim 1 monitoring concrete surface crack device, it is characterised in that terminals(2)And foil gauge (1)On be coated with silica gel.
CN201621203194.6U 2016-11-08 2016-11-08 Monitoring concrete surface crack 's device CN206146872U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621203194.6U CN206146872U (en) 2016-11-08 2016-11-08 Monitoring concrete surface crack 's device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621203194.6U CN206146872U (en) 2016-11-08 2016-11-08 Monitoring concrete surface crack 's device

Publications (1)

Publication Number Publication Date
CN206146872U true CN206146872U (en) 2017-05-03

Family

ID=58624947

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621203194.6U CN206146872U (en) 2016-11-08 2016-11-08 Monitoring concrete surface crack 's device

Country Status (1)

Country Link
CN (1) CN206146872U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107830795A (en) * 2017-11-09 2018-03-23 广西交通科学研究院有限公司 Fracture width variable quantity test device and its foil gauge combining structure
CN108020654A (en) * 2017-11-09 2018-05-11 广西交通科学研究院有限公司 A kind of fracture width changed measurement method for testing based on foil gauge
CN108896625A (en) * 2018-07-11 2018-11-27 重庆交通大学 A kind of strain field converged alertness network structure Crack Monitoring method
CN109211179A (en) * 2018-09-11 2019-01-15 福建工程学院 Mining slip-crack surface deformation monitoring method
CN109781321A (en) * 2019-01-29 2019-05-21 西安交通大学 One kind splitting cartridge type torque sensor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107830795A (en) * 2017-11-09 2018-03-23 广西交通科学研究院有限公司 Fracture width variable quantity test device and its foil gauge combining structure
CN108020654A (en) * 2017-11-09 2018-05-11 广西交通科学研究院有限公司 A kind of fracture width changed measurement method for testing based on foil gauge
CN108020654B (en) * 2017-11-09 2019-06-14 广西交通科学研究院有限公司 A kind of fracture width changed measurement method for testing based on foil gauge
CN107830795B (en) * 2017-11-09 2019-06-14 广西交通科学研究院有限公司 Fracture width variable quantity test device and its foil gauge composite structure
CN108896625A (en) * 2018-07-11 2018-11-27 重庆交通大学 A kind of strain field converged alertness network structure Crack Monitoring method
CN109211179A (en) * 2018-09-11 2019-01-15 福建工程学院 Mining slip-crack surface deformation monitoring method
CN109781321A (en) * 2019-01-29 2019-05-21 西安交通大学 One kind splitting cartridge type torque sensor

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170503

Termination date: 20171108

CF01 Termination of patent right due to non-payment of annual fee