CN112198193A - Concrete structure crack monitoring device and monitoring method thereof - Google Patents
Concrete structure crack monitoring device and monitoring method thereof Download PDFInfo
- Publication number
- CN112198193A CN112198193A CN202011197110.3A CN202011197110A CN112198193A CN 112198193 A CN112198193 A CN 112198193A CN 202011197110 A CN202011197110 A CN 202011197110A CN 112198193 A CN112198193 A CN 112198193A
- Authority
- CN
- China
- Prior art keywords
- water
- irrigation pipe
- pipe
- concrete
- temperature measuring
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 65
- 239000004567 concrete Substances 0.000 title claims abstract description 61
- 238000012806 monitoring device Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 230000002262 irrigation Effects 0.000 claims abstract description 77
- 238000003973 irrigation Methods 0.000 claims abstract description 77
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000005336 cracking Methods 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 230000035772 mutation Effects 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000001069 Raman spectroscopy Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
本发明公开了一种混凝土结构裂缝监测装置及其监测方法，裂缝监测装置包括水循环系统和测温系统，水循环系统包括至少一根使用时布置于混凝土内的灌水管和用于给灌水管供水、并能采集灌水管内水压的供水部；每根灌水管外套装有至少一段采用脆性材料制成、且内径大于所述灌水管外径的第一套管；第一套管两端安装有封堵第一套管与灌水管间间隙的密封块，位于所述第一套管内的灌水管上开设有若干过水孔；测温系统包括解调仪和至少一根布置于混凝土内与解调仪连接的测温线路，所述测温线路临近所述第一套管。
The invention discloses a concrete structure crack monitoring device and a monitoring method. The crack monitoring device includes a water circulation system and a temperature measurement system. The water circulation system includes at least one irrigation pipe arranged in concrete when in use, and a water supply pipe for supplying water to the irrigation pipe. The water supply part that can collect the water pressure in the irrigation pipe; the outer casing of each irrigation pipe is equipped with at least a first sleeve made of brittle material and whose inner diameter is larger than the outer diameter of the irrigation pipe; both ends of the first sleeve are installed with seals. A sealing block for blocking the gap between the first casing and the irrigation pipe, and the irrigation pipe located in the first casing is provided with a number of water passage holes; the temperature measurement system includes a demodulator and at least one arranged in the concrete and the demodulator The temperature measurement line connected to the instrument is adjacent to the first casing.
Description
Technical Field
The invention relates to a concrete crack monitoring technology, in particular to a concrete structure crack monitoring device and a monitoring method thereof.
Background
The concrete is the most widely applied engineering material, and the cracks serving as mechanical discontinuities can obviously change the stress field in the member, destroy the integrity of the engineering structure, seriously reduce the bearing capacity of the structure and accelerate the aging of the structure; for reinforced concrete structures, cracks can also lead to corrosion of the steel reinforcement and aggravate the development of cracks. Cracks are the primary concern in concrete engineering construction, and crack prevention is the basic requirement of concrete engineering. The method can accurately and timely monitor the occurrence and development process of the cracks, and has important significance for guaranteeing engineering safety and preventing accidents.
In the prior art, CN201911006960.8 discloses a temperature tracing system and a monitoring method for monitoring a crack of a concrete structure, the structure of which is shown in fig. 1, the system is composed of a heating and temperature measuring integrated system, a monitoring tube 1 and a second sleeve 2, the heating and temperature measuring integrated system is composed of a heating and temperature measuring integrated circuit 3, a demodulator 4 and a voltage-stabilized power supply 5; the inner diameter of the monitoring pipe 1 is slightly larger than that of the heating and temperature measuring integrated circuit 3, and the second sleeve 2 is made of porous water-absorbing materials.
The crack monitoring by adopting the monitoring system is to firstly obtain a reference value of a structure in a non-cracking state, before monitoring in an engineering operation period, a method is needed to ensure that a detected part is fully soaked by water, so that the water content of the second sleeve 2 is changed, the density, specific heat and heat conduction coefficient of the second sleeve 2 are all related to the water content, and the larger the water content is, the larger the three thermodynamic parameters are, the higher the cooling speed of a heat source in the monitoring pipe 1 can be caused, therefore, a cooling speed index can be determined according to a cooling time curve after the temperature of a measuring point in the monitoring pipe 1 is increased, and the cracked part is identified.
When the monitoring system realizes crack monitoring, the crack monitoring is passive monitoring, namely the monitored part is required to be fully soaked, if concrete is not soaked, a temperature reduction speed index is difficult to obtain, and the crack monitoring is inaccurate; in addition, when monitoring, infiltration operation and sufficient infiltration monitoring are needed, so that the operation of monitoring cracks is complicated.
Disclosure of Invention
Aiming at the defects in the prior art, the concrete structure crack monitoring device and the monitoring method thereof provided by the invention can realize the crack monitoring without fully soaking the concrete.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
in a first aspect, a concrete structure crack monitoring device is provided, which comprises a water circulation system and a temperature measuring system,
the water circulation system comprises at least one irrigation pipe which is arranged in concrete when in use and a water supply part which is used for supplying water to the irrigation pipe and can collect the water pressure in the irrigation pipe;
each irrigation pipe is externally sleeved with at least one section of first sleeve which is made of brittle materials and has the inner diameter larger than the outer diameter of the irrigation pipe;
sealing blocks for plugging a gap between the first sleeve and the irrigation pipe are arranged at two ends of the first sleeve, and a plurality of water through holes are formed in the irrigation pipe in the first sleeve;
the temperature measurement system comprises a demodulator and at least one temperature measurement line arranged in the concrete and connected with the demodulator, and the temperature measurement line is close to the first sleeve.
In a second aspect, there is provided a monitoring method for a concrete structure crack monitoring device, which comprises:
s1, supplying water into the irrigation pipe by using the water supply part until the pressure in the irrigation pipe reaches a preset pressure;
s2, judging whether the pressure in the irrigation pipe is reduced, if so, entering the step S3, otherwise, continuing to execute the step S2;
s3, starting the water supply part to heat the water inside the water supply part, and pumping the hot water into the irrigation pipe to circulate by adopting a water pump arranged in the water supply part;
and S4, starting a temperature measuring system, and monitoring the temperature space-time distribution of each temperature measuring line in real time through the temperature measuring system, wherein the position corresponding to the temperature mutation point on the temperature space-time distribution is the concrete cracking position.
The principle that the monitoring device of this scheme carries out crack monitoring does: after the irrigation pipe is arranged in the concrete, the interior of the irrigation pipe is filled with water, and the pressure is constant; when concrete cracks, the first sleeve made of the brittle material is damaged, so that water in the irrigation pipe flows out of the broken first sleeve through the water holes, and the pressure in the irrigation pipe is changed; the water supply part can collect pressure change in the water filling pipe, heated water is pumped into the water filling pipe and flows out along the broken first sleeve, the temperature spatial and temporal distribution in the concrete can be collected by the started temperature measuring circuit, and a temperature mutation point is found, so that the position of the concrete with cracks is found.
The invention has the beneficial effects that: whether the concrete cracks or not can be accurately determined through the pressure change of the irrigation pipe, and then the position of the concrete cracks is quickly found through the hot water combination temperature measurement circuit at the leakage position, so that the rapid and accurate positioning of the cracks is achieved.
The monitoring device provided by the scheme can realize active monitoring of cracks without passively infiltrating concrete, can reduce operation steps of crack monitoring, and can also ensure accuracy of crack monitoring.
Drawings
Fig. 1 is a schematic structural view of a temperature tracing system for crack monitoring of a concrete structure in the prior art.
Fig. 2 is a schematic structural view of the concrete structure crack monitoring device in the scheme.
FIG. 3 is a cross-sectional view of the monitoring tube, irrigation tube and sleeve after placement in the concrete, taken along the width of the concrete.
FIG. 4 is a cross-sectional view of the monitoring tube, irrigation tube and sleeve arranged after the concrete along the length of the concrete width.
FIG. 5 is a graph of the temperature profile over the range covered by the sleeve in the example.
Wherein, 1, monitoring the tube; 2. a second sleeve; 3. heating and measuring the temperature of the integrated circuit; 4. a demodulator; 5. a regulated power supply; 6. a water circulation system; 61. an irrigation pipe; 611. water passing holes; 62. a water supply part; 63. a first sleeve; 64. a water separator; 65. a water collector; 66. a sealing block; 7. a temperature measuring system; 71. a temperature measuring circuit; 8. and (3) concrete.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
The concrete structure crack monitoring device comprises a water circulation system 6 and a temperature measurement system 7.
2-4, the water circulation system 6 comprises at least one irrigation pipe 61 arranged in the concrete 8 when in use and a water supply part 62 for supplying water to the irrigation pipe 61 and collecting water pressure in the irrigation pipe 61; after the irrigation pipe 61 is disposed on the concrete 8, the irrigation pipe 61 is filled with water through the water supply part 62 so that a constant pressure is provided in the irrigation pipe 61.
At least one section of first sleeve 63 which is made of brittle materials and has the inner diameter larger than the outer diameter of the irrigation pipe 61 is sleeved outside each irrigation pipe 61; the first bushing 63 may be a ceramic tube or a glass tube.
In practice, in this embodiment, when there are multiple irrigation pipes 61, the water circulation system 6 further comprises a water separator 64 and a water collector 65, the water output from the water supply part 62 enters the multiple irrigation pipes 61 through the water separator 64, and the return water from the multiple irrigation pipes 61 is sent to the water supply part 62 through the water collector 65.
The water distributor 64 can ensure that water in the water supply part 62 uniformly enters each irrigation pipe 61, and ensure that the pressure in each irrigation pipe 61 is the same when no crack occurs in the concrete 8 in each irrigation pipe 61.
The inner diameter of the first sleeve 63 is larger than the outer diameter of the irrigation pipe 61, a certain gap is ensured between the first sleeve and the irrigation pipe, and the external shape and the size of the first sleeve are determined according to engineering requirements on the principle that the mechanical property of a measured structure is not influenced.
The unique arrangement of the material of the first sleeve 63 can break when the concrete 8 cracks, so that the cracks of the concrete 8 can be actively and quickly detected through the leakage of water in the irrigation pipe 61.
The two ends of the first sleeve 63 are provided with sealing blocks 66 for sealing the gap between the first sleeve 63 and the irrigation pipe 61, and the irrigation pipe 61 in the first sleeve 63 is provided with a plurality of water through holes 611; the sealing block 66 may be a waterproof glue layer formed using waterproof glue.
The sealing block 66 can prevent the water in the irrigation pipe 61 from leaking from the end gap when the concrete 8 is not cracked, so that the water pressure in the irrigation pipe 61 is influenced, and the false judgment of cracks is prevented.
The temperature measuring system 7 comprises a demodulator 4 and at least one temperature measuring line 71 which is arranged in the concrete 8 and connected with the demodulator 4, wherein the temperature measuring line 71 is close to the first sleeve 63. The temperature measuring circuit 71 is a distributed optical fiber temperature sensing system based on raman scattering or a fiber bragg grating quasi-distributed sensing system with multiple points connected in series.
In the implementation, the temperature measuring line 71 preferably positioned in the concrete 8 is sleeved in the monitoring pipe 1, and the inner diameter of the monitoring pipe 1 is larger than the outer diameter of the temperature measuring line 71; when the temperature measuring device is used, insulating liquid is filled in a gap between the monitoring tube 1 and the temperature measuring circuit 71.
The monitoring pipe 1 needs to have higher strength and flexibility, can protect the temperature measuring circuit 71, and has an inner diameter larger than the outer diameter of the temperature measuring circuit 71 so as to ensure that the temperature measuring circuit 71 can smoothly penetrate into the monitoring pipe 1, and if the temperature measuring circuit 71 is damaged, the temperature measuring circuit 71 can be conveniently replaced.
After the monitoring pipe 1 is arranged in the concrete 8, the monitoring pipe 1 should be filled with an insulating liquid, such as: the pure water is used for improving the heat transfer performance between the temperature measuring circuit 71 and the surrounding medium, and the monitoring tube 1 can be a heat-resistant polyethylene (PE-RT) tube or a Polytetrafluoroethylene (PTFE) tube.
The water supply part 62 of the scheme is a boiler or a pressurizing pump; when the boiler is adopted, the pressure gauge of the boiler can detect the pressure in the irrigation pipe 61, the boiler can automatically heat water, and hot water is pumped into the irrigation pipe 61 through the pump of the boiler.
The pressurizing pump is also provided with a pressure gauge, so that the pressure can be detected, but when hot water is poured, the hot water can be manually pressed into the pouring pipe 61 by the pressurizing pump.
The monitoring pipe 1, the irrigation pipe 61 and the first sleeve 63 of the scheme need to be pre-embedded in the structure of the concrete 8 to be detected, and are preferably embedded in a tension area; in the reinforced concrete 8 structure, the embedded positions of the monitoring pipe 1, the irrigation pipe 61 and the sleeve need to avoid steel bars (stirrups, longitudinal stress steel bars and the like).
The detection device of the scheme has the following advantages besides the above mentioned effects:
(1) the monitoring technology is distributed or mobile distributed monitoring, the coverage is wide, and a monitoring blind area in the temperature measuring circuit 71 cannot occur due to too wide local cracks or too many cracks;
(2) the temperature measuring circuit 71 is protected by the monitoring tube 1, so that the survival rate of the sensor is improved;
(3) the temperature measuring line 71 can be taken out from the monitoring pipe 1 for repair or replacement, so that the failure of the whole temperature measuring line 71 caused by local breakpoints is avoided, and the long-term monitoring requirement is met;
(4) the crack positioning and identifying method is simple, efficient and convenient to implement.
To this end, a detailed description of the concrete 8 structural crack monitoring device according to the present embodiment is completed, and a monitoring method of the monitoring device will be described next.
The monitoring method of the concrete 8 structure crack monitoring device comprises the following steps:
s1, supplying water into the irrigation pipe 61 by the water supply part 62 until the pressure in the irrigation pipe 61 reaches the preset pressure;
s2, judging whether the pressure in the irrigation pipe 61 is reduced, if yes, entering the step S3, otherwise, continuing to execute the step S2;
when a crack is generated in the area covered by the pipeline system consisting of the irrigation pipe 61 and the first sleeve 63 and the crack depth extends to the first sleeve 63, the first sleeve 63 is cracked, water in the irrigation pipe 61 flows out of the water through hole 611 and leaks outwards along the crack surface, the reading of a built-in pressure gauge of the boiler is reduced, and the crack generation is indicated; therefore, whether cracks are generated in the concrete 8 can be judged through the pressure in the irrigation pipe 61 during monitoring.
S3, starting the water supply part 62 to heat the water inside, and pumping the hot water into the irrigation pipe 61 by adopting a water pump arranged in the water supply part 62 to circulate; when the boiler cannot be started due to too small water pressure, water can be supplemented and pressurized through a water supplementing valve on the boiler;
s4, starting the temperature measuring system 7, wherein hot water in the irrigation pipe 61 flows out from the water through holes 611 and leaks outwards along the crack surface, so that the monitoring pipe 1 at the crack is heated, the temperature spatial-temporal distribution of each temperature measuring line 71 is monitored in real time through the temperature measuring system 7, and the position corresponding to the temperature mutation point on the temperature spatial-temporal distribution is the cracking position of the concrete 8.
The effectiveness of the monitoring device and the monitoring method provided by the scheme is described below with reference to specific examples:
in order to verify the effectiveness of the crack monitoring device provided by the scheme, 1 reinforced concrete 8 test piece is manufactured, and the size of the test piece is 1000mm x 400mm x 280 mm. The test piece is pre-embedded with one monitoring pipe 1, one irrigation pipe 61 and one first sleeve 63, and the distance between the monitoring pipe 1 and the irrigation pipe 61 is 100 mm.
The monitoring pipe 1 is a PTFE pipe with the outer diameter of 10mm and the inner diameter of 6 mm; the irrigation pipe 61 is a PE-RT pipe with the outer diameter of 16mm and the inner diameter of 12 mm; the first sleeve 63 is a ceramic tube with an outer diameter of 25mm, an inner diameter of 19mm and a length of 500 mm.
Three-point bending test is carried out after 28d of shaping maintenance is pour to the test piece, makes mid-span fracture, then adopts the monitoring devices of this scheme to test, wherein: the temperature measurement system 7 adopts a Fiber Bragg Grating (FBG) temperature sensing system, and the FBG temperature sensor is packaged by a copper pipe with the outer diameter of 4mm and the length of 40 mm.
The temperature profile in the monitoring tube 1 over the first sleeve 63 is shown in fig. 5, from which fig. 5 it can be seen that: the temperature of a measuring point corresponding to the midspan cracking part is obviously higher than that of other parts, and the crack can be identified according to the abnormal phenomenon.
Claims (9)
1. The concrete structure crack monitoring device is characterized by comprising a water circulation system and a temperature measuring system,
the water circulation system comprises at least one irrigation pipe which is arranged in concrete when in use and a water supply part which is used for supplying water to the irrigation pipe and can collect the water pressure in the irrigation pipe;
each irrigation pipe is externally sleeved with at least one section of first sleeve which is made of brittle materials and has the inner diameter larger than the outer diameter of the irrigation pipe;
sealing blocks for plugging a gap between the first sleeve and the irrigation pipe are arranged at two ends of the first sleeve, and a plurality of water through holes are formed in the irrigation pipe in the first sleeve;
the temperature measurement system comprises a demodulator and at least one temperature measurement line arranged in the concrete and connected with the demodulator, and the temperature measurement line is close to the first sleeve.
2. The concrete structure crack monitoring device of claim 1, wherein the temperature measuring line in the concrete is sleeved in a monitoring pipe, and the inner diameter of the monitoring pipe is larger than the outer diameter of the temperature measuring line; when the temperature measuring device is used, insulating liquid is filled in a gap between the monitoring tube and the temperature measuring circuit.
3. The concrete structure crack monitoring device of claim 2, wherein the temperature measuring circuit is a distributed fiber temperature sensing system based on Raman scattering or a multi-point series fiber Bragg grating quasi-distributed sensing system.
4. The concrete structure crack monitoring device of claim 1, further comprising a water separator and a water collector when a plurality of irrigation pipes are present, wherein water output from the water supply part passes through the water separator and enters the plurality of irrigation pipes, and return water from the plurality of irrigation pipes is sent to the water supply part through the water collector.
5. The concrete structure crack monitoring device of claim 4, wherein the water supply part is a boiler or a pressurizing pump.
6. The concrete structure crack monitoring device of claim 1, wherein the first sleeve is a ceramic tube or a glass tube.
7. The concrete structure crack monitoring device of claim 1, wherein the irrigation pipe is a heat-resistant polyethylene pipe, and the monitoring pipe is a heat-resistant polyethylene pipe or a polytetrafluoroethylene pipe.
8. The crack monitoring device for a concrete structure according to any one of claims 1 to 7, wherein the sealing block is a waterproof glue layer.
9. The method for monitoring a crack monitoring device for a concrete structure according to any one of claims 1 to 8, comprising:
s1, supplying water into the irrigation pipe by using the water supply part until the pressure in the irrigation pipe reaches a preset pressure;
s2, judging whether the pressure in the irrigation pipe is reduced, if so, entering the step S3, otherwise, continuing to execute the step S2;
s3, starting the water supply part to heat the water inside the water supply part, and pumping the hot water into the irrigation pipe to circulate by adopting a water pump arranged in the water supply part;
and S4, starting a temperature measuring system, and monitoring the temperature space-time distribution of each temperature measuring line in real time through the temperature measuring system, wherein the position corresponding to the temperature mutation point on the temperature space-time distribution is the concrete cracking position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197110.3A CN112198193B (en) | 2020-10-30 | 2020-10-30 | Concrete structure crack monitoring device and monitoring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197110.3A CN112198193B (en) | 2020-10-30 | 2020-10-30 | Concrete structure crack monitoring device and monitoring method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112198193A true CN112198193A (en) | 2021-01-08 |
| CN112198193B CN112198193B (en) | 2024-08-02 |
Family
ID=74012314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011197110.3A Active CN112198193B (en) | 2020-10-30 | 2020-10-30 | Concrete structure crack monitoring device and monitoring method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112198193B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781964A (en) * | 2023-12-14 | 2024-03-29 | 水利部交通运输部国家能源局南京水利科学研究院 | Visual detection method of concrete crack depth indicator tracer radar |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894592A (en) * | 1994-09-27 | 1996-04-12 | Asahi Glass Co Ltd | Method and device for inspecting brittle material |
| US8215164B1 (en) * | 2012-01-02 | 2012-07-10 | HydroConfidence Inc. | Systems and methods for monitoring groundwater, rock, and casing for production flow and leakage of hydrocarbon fluids |
| JP2016006398A (en) * | 2014-06-20 | 2016-01-14 | 西日本高速道路エンジニアリング四国株式会社 | Predictive diagnosis method of spall of concrete structure |
| JP2017032516A (en) * | 2015-08-05 | 2017-02-09 | 太平洋セメント株式会社 | Capacitance-based corrosion sensor and corrosion detection method |
| CN207775888U (en) * | 2017-12-18 | 2018-08-28 | 中国能源建设集团广西水电工程局有限公司 | A kind of cooling water pipe connection structure for RCC dam expansion joint |
| CN109374682A (en) * | 2018-11-26 | 2019-02-22 | 中国工程物理研究院化工材料研究所 | A kind of monitoring device of fragile material crack initiation time |
| CN109856032A (en) * | 2019-02-21 | 2019-06-07 | 四川大学 | Heat point source moving distributing seepage monitoring system and its monitoring method |
| CN213121704U (en) * | 2020-10-30 | 2021-05-04 | 四川大学 | Concrete structure crack monitoring devices |
| CN115248014A (en) * | 2022-07-13 | 2022-10-28 | 中国电建集团昆明勘测设计研究院有限公司 | Monitoring pipe-sleeve assembly for detecting cracks of underwater concrete structure |
-
2020
- 2020-10-30 CN CN202011197110.3A patent/CN112198193B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894592A (en) * | 1994-09-27 | 1996-04-12 | Asahi Glass Co Ltd | Method and device for inspecting brittle material |
| US8215164B1 (en) * | 2012-01-02 | 2012-07-10 | HydroConfidence Inc. | Systems and methods for monitoring groundwater, rock, and casing for production flow and leakage of hydrocarbon fluids |
| JP2016006398A (en) * | 2014-06-20 | 2016-01-14 | 西日本高速道路エンジニアリング四国株式会社 | Predictive diagnosis method of spall of concrete structure |
| JP2017032516A (en) * | 2015-08-05 | 2017-02-09 | 太平洋セメント株式会社 | Capacitance-based corrosion sensor and corrosion detection method |
| CN207775888U (en) * | 2017-12-18 | 2018-08-28 | 中国能源建设集团广西水电工程局有限公司 | A kind of cooling water pipe connection structure for RCC dam expansion joint |
| CN109374682A (en) * | 2018-11-26 | 2019-02-22 | 中国工程物理研究院化工材料研究所 | A kind of monitoring device of fragile material crack initiation time |
| CN109856032A (en) * | 2019-02-21 | 2019-06-07 | 四川大学 | Heat point source moving distributing seepage monitoring system and its monitoring method |
| CN213121704U (en) * | 2020-10-30 | 2021-05-04 | 四川大学 | Concrete structure crack monitoring devices |
| CN115248014A (en) * | 2022-07-13 | 2022-10-28 | 中国电建集团昆明勘测设计研究院有限公司 | Monitoring pipe-sleeve assembly for detecting cracks of underwater concrete structure |
Non-Patent Citations (3)
| Title |
|---|
| JIANG CHEN 等: "Crack detection for wading-concrete structures using water irrigation and electric heating", 《FRONT.STRUCT.CIV.ENG.》, vol. 17, no. 3, 31 December 2023 (2023-12-31), pages 368 - 377 * |
| 陈江 等: "光纤光栅-水暖循环集成系统监测渗流的试验研究", 《四川大学学报（工程科学版）》, vol. 48, no. 6, 30 November 2016 (2016-11-30), pages 51 - 57 * |
| 陈江 等: "基于热效应的涉水混凝土工程裂缝监测方法", 《工程科学与技术》, vol. 55, no. 1, 31 January 2023 (2023-01-31), pages 296 - 303 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781964A (en) * | 2023-12-14 | 2024-03-29 | 水利部交通运输部国家能源局南京水利科学研究院 | Visual detection method of concrete crack depth indicator tracer radar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112198193B (en) | 2024-08-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8162535B2 (en) | Method for monitoring the state of a tube for a coating in a system of pipes or ducts | |
| Chen et al. | A crack detection method for underwater concrete structures using sensing-heating system with porous casing | |
| Li et al. | Pressure test of a prestressed concrete cylinder pipe using distributed fiber optic sensors: Instrumentation and results | |
| CN107727271B (en) | Leak detection device for underground diaphragm wall based on distributed optical fiber temperature measurement | |
| CN109681788B (en) | Optical cable and pipeline leakage monitoring system | |
| CA2521543A1 (en) | Fluid flow measurement using optical fibres | |
| CN109856032B (en) | Point heat source mobile distributed seepage monitoring system and monitoring method | |
| CN213121704U (en) | Concrete structure crack monitoring devices | |
| CN101334322A (en) | Measurement method of temperature, stress-strain and vibration of high-temperature double-layer pipeline | |
| CN101514896A (en) | Convertor lining thickness online testing method and device thereof | |
| CN112198193A (en) | Concrete structure crack monitoring device and monitoring method thereof | |
| CN110672657B (en) | A temperature tracking system and monitoring method for monitoring cracks in concrete structures | |
| CN106680001A (en) | Pipeline three-way area on-line fatigue life monitoring device and method | |
| CN111022833B (en) | Direct-buried heat-insulating steam pipe with pipeline leakage monitoring function | |
| JP2019158834A (en) | Optical fiber sensor installation method detecting concrete deterioration due to frost damage and method for detecting concrete structure deterioration | |
| CN103219053B (en) | The adjustable test section apparatus of pipe leakage is simulated in nuclear power station pipeline leakage rate test | |
| JP4264301B2 (en) | Diagnostic method for temperature sensor, refractory and refractory lining | |
| CN204679657U (en) | A kind of face dam leak detection apparatus | |
| CN108009329B (en) | A Method for Determining the Minimum Pipe Length for 9%Cr Thermal Strength Steel Pipe Welding Process Evaluation | |
| KR101898862B1 (en) | A System on Prediction of Wear Condition of Double Insulating Tube Insulator Using Fiber Optical Cable | |
| CN209960227U (en) | Optical cable and pipeline leakage monitoring system | |
| CN105021649B (en) | A kind of microspur seepage monitoring sensor | |
| Liu et al. | Corrosion detection of bridge reinforced concrete with induction heating and infrared thermography | |
| CN115248014A (en) | Monitoring pipe-sleeve assembly for detecting cracks of underwater concrete structure | |
| Yu et al. | Composite Repair of Large-Size Diameter Pipe With Severe Metal Loss Defects |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |