CN114438883A - Trestle bridge concrete intelligent maintenance system and method - Google Patents
Trestle bridge concrete intelligent maintenance system and method Download PDFInfo
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- CN114438883A CN114438883A CN202011231994.XA CN202011231994A CN114438883A CN 114438883 A CN114438883 A CN 114438883A CN 202011231994 A CN202011231994 A CN 202011231994A CN 114438883 A CN114438883 A CN 114438883A
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- 238000012423 maintenance Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000001816 cooling Methods 0.000 claims abstract description 65
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000007664 blowing Methods 0.000 claims abstract description 30
- 238000005507 spraying Methods 0.000 claims abstract description 27
- 239000007921 spray Substances 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 14
- 238000001723 curing Methods 0.000 claims 3
- 238000009529 body temperature measurement Methods 0.000 abstract description 8
- 230000033228 biological regulation Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 206010063385 Intellectualisation Diseases 0.000 abstract 1
- 230000008569 process Effects 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 8
- 239000004568 cement Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0075—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of a decrease in temperature
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0082—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of a rise in temperature, e.g. caused by an exothermic reaction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0277—Hardening promoted by using additional water, e.g. by spraying water on the green concrete element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/10—Thermometers specially adapted for specific purposes for measuring temperature within piled or stacked materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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Abstract
The invention discloses an intelligent trestle concrete maintenance system and method, wherein the system comprises a temperature measurement unit, a temperature regulation unit and a control unit; the temperature adjusting unit comprises a blast component, a spraying component, a heating component and a water cooling component; the blowing assembly is used for blowing operation on the surface of the concrete to cool the surface of the concrete; the spraying assembly is used for spraying water on the surface of the concrete; the water cooling assembly is used for performing water cooling operation on the interior of the concrete so as to cool the interior of the concrete; the temperature measuring unit is used for collecting temperature information of each measuring point in the trestle concrete and sending the temperature information to the control unit; the control unit adjusts air blowing operation of the air blowing assembly, water spraying operation of the spraying assembly, water cooling operation of the water cooling assembly or heating operation of the heating assembly according to the temperature information so as to adjust the temperature of the concrete. The invention has the advantages of full automation, intellectualization, accurate temperature measurement, rich temperature regulation modes, good regulation effect and the like.
Description
Technical Field
The invention mainly relates to the technical field of trestles, in particular to a trestle concrete intelligent maintenance system and method.
Background
Cement concrete is a common material in the building industry, buildings made of the cement concrete are visible everywhere, and members of some important parts are made of the cement concrete.
At present, with the development of detection technology and the increasing requirements of people on building safety. In the case of a cement concrete component, the occurrence of cracks in the cement concrete structural component represents a significant quality problem and even a safety risk for the component. Because of the inside and outside difference in temperature, the inside heat accumulation of concrete is difficult for giving off, and when the difference in temperature was to a certain extent, when the tensile stress on surface exceeded the ultimate tensile strength of concrete at that time, concrete surface would produce the crack. Therefore, efficient temperature detection of cement concrete in buildings is of paramount importance.
In the prior art, the temperature of large-volume cement concrete in a building is mainly detected by using a manual inspection mode, the workload of workers is large and very cumbersome, so that the real-time performance of temperature monitoring values is poor, the error of data reading is large, the problems that temperature measurement data is not timely and accurate in processing and the like often occur, the temperature monitoring technical method is low in efficiency and distortion in manual inspection, and the problem that the temperature monitoring technical method is too many to cause problems and is not accepted by engineering technicians is solved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides an automatic and intelligent trestle concrete intelligent maintenance system and an intelligent maintenance method.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
an intelligent trestle concrete maintenance system comprises a temperature measuring unit, a temperature adjusting unit and a control unit; the temperature adjusting unit comprises a blast component, a spraying component, a water cooling component and a heating component; the air blowing assembly is used for blowing air to the surface of the concrete to cool the surface of the concrete; the spraying assembly is used for spraying water on the surface of the concrete; the water cooling assembly is used for performing water cooling operation on the interior of the concrete so as to cool the interior of the concrete; the temperature measuring unit is used for collecting temperature information of each measuring point in the concrete of the trestle and sending the temperature information to the control unit; and the control unit adjusts the air blowing operation of the air blowing assembly or the water spraying operation of the spraying assembly or the water cooling operation of the water cooling assembly or the heating operation of the heating assembly according to the temperature information so as to adjust the temperature of the concrete.
As a further improvement of the above technical solution:
each temperature measuring unit comprises a plurality of temperature electronic tags, a leakage cable, a reader and a controller; the plurality of temperature electronic tags are arranged at temperature measuring points in the concrete in a layered mode and used for collecting temperature information of the temperature measuring points and sending radio frequency signals containing corresponding position information and temperature information to the leakage cable; the leakage cable is positioned in the concrete and used for sending the radio frequency signal to a reader; the reader is connected with the controller and used for receiving and demodulating the radio frequency signal to obtain data information and sending the data information to the controller.
The temperature electronic tags are distributed in the concrete in at least two layers, wherein the temperature electronic tags between the adjacent layers are arranged in the vertical direction.
The telescopic rod is formed by sleeving a plurality of sections of hollow rods; a plurality of temperature electronic tags on the same vertical direction are sequentially installed on the telescopic rod, and each temperature electronic tag corresponds to one section of hollow rod and is installed at the exposed end of the corresponding hollow rod.
The air blowing component is an air blower; the heating component is a resistance heating wire or a steam pipeline in the trestle auxiliary template.
The spraying assembly comprises a plurality of spraying heads, and each spraying head is correspondingly arranged above each temperature measuring point.
The water cooling assembly comprises a water cooling pipe, a water cooling pump and a water tank, the water cooling pipe is laid inside the concrete, one end of the water cooling pipe is connected with the output end of the water cooling pump, the other end of the water cooling pipe is connected with the water tank, and the input end of the water cooling pump is connected with the water tank.
The water cooling pipe is vertically arranged inside the concrete in an S shape.
The invention also discloses an intelligent maintenance method based on the trestle bridge concrete intelligent maintenance system, which comprises the following steps:
1) acquiring temperature information of each measuring point in the concrete through a temperature measuring unit;
2) comparing the temperature of the concrete surface with a first preset value; when the temperature of the surface of the concrete is higher than a first preset value, controlling the air blowing assembly to blow the surface of the concrete so as to reduce the temperature; otherwise, controlling the heating assembly to heat the concrete;
comparing the temperature inside the concrete with a second preset value; when the temperature inside the concrete is higher than a second preset value, controlling the water cooling assembly to carry out water cooling operation on the inside of the concrete so as to cool the inside of the concrete; otherwise, controlling the heating assembly to heat the concrete;
comparing the difference between the temperature inside the concrete and the temperature on the surface of the concrete with a preset difference, and controlling the spraying assembly to spray water on the surface of the concrete when the difference is greater than the preset difference and the change rate of the difference is less than a certain value; wherein the rate of change of the difference is the rate of change of the difference over a period of time.
As a further improvement of the above technical solution:
in the step 2), the blast quantity of the blast assembly is adjusted in real time according to the temperature of the concrete surface; the amount of cold water of the water cooling assembly is adjusted in real time according to the temperature inside the concrete; and the sprinkling quantity of the sprinkling assembly is adjusted in real time according to the difference value and the change rate of the difference value.
Compared with the prior art, the invention has the advantages that:
(1) the temperature measuring unit is used for measuring the temperature information of each measuring point in the concrete, and the temperature adjusting unit is used for adjusting the temperature of the concrete according to the temperature information of each measuring point, so that the automatic and intelligent maintenance of the concrete is realized; the temperature adjusting unit comprises a blowing assembly, a spraying assembly, a water cooling assembly and a heating assembly, the adjusting modes are various, and the temperature adjusting unit can be selected according to actual requirements, so that the applicability of the temperature adjusting unit is improved; meanwhile, the temperature regulating unit and the temperature regulating unit can be correspondingly regulated according to specific temperature values, so that accurate temperature regulation is achieved.
(2) The temperature measuring unit collects temperature information of temperature measuring points through the temperature electronic tag, and sends radio frequency signals containing corresponding position information and temperature information to the reader through the leakage cable to obtain data information, so that accurate measurement of multiple measuring points of concrete is realized, the arrangement mode can reduce wiring workload, simplify the measuring process of the internal temperature of the concrete in the construction process, and the whole structure is simple. In addition, the mode that the temperature electronic tags are arranged up and down can be realized through the telescopic rods, the temperature measurement of different position points in the vertical direction can be realized, and the operation is simple and convenient.
Drawings
Fig. 1 is a block configuration diagram of an embodiment of the present invention.
FIG. 2 is a diagram of an embodiment of the present invention in a specific application.
FIG. 3 is a diagram of an embodiment of a water cooling module according to the present invention in a specific application.
FIG. 4 is a flow chart of an embodiment of the method of the present invention.
The reference numbers in the figures denote: 1. a temperature measuring unit; 101. a temperature electronic tag; 102. leaking the cable; 103. a reader; 104. a controller; 105. a telescopic rod; 1051. a hollow shaft; 2. a temperature adjusting unit; 201. a blower assembly; 2011. a blower; 202. a spray assembly; 2021. a shower head; 203. a water-cooling assembly; 2031. a water-cooled tube; 2032. a water-cooled pump; 2033. a water tank; 204. a heating assembly; 3. a control unit.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments of the description.
As shown in fig. 1 and fig. 2, the intelligent maintenance method of the intelligent maintenance system for trestle concrete of the present embodiment includes a temperature measuring unit 1, a temperature adjusting unit 2, and a control unit 3; the temperature adjusting unit 2 comprises one or more of a blower assembly 201, a spray assembly 202 or a water cooling assembly 203; the blowing assembly 201 is used for blowing the surface of the concrete to cool; the spraying assembly 202 is used for spraying water on the surface of concrete; the water cooling assembly 203 is used for performing water cooling operation on the interior of the concrete so as to cool the interior of the concrete; the heating assembly 204 is used for heating concrete; the temperature measuring unit 1 is used for collecting temperature information of each measuring point in the trestle concrete and sending the temperature information to the control unit 3; the control unit 3 adjusts the air blowing operation of the air blowing unit 201 or the water spraying operation of the shower unit 202 or the water cooling operation of the water cooling unit 203 or the heating operation of the heating unit 204 according to the temperature information to adjust the temperature of the concrete. The measuring points can be selected according to the conditions of the area size, the depth and the like of the concrete on site, and can be one or more. According to the trestle concrete intelligent maintenance system, the temperature information of each measuring point in the concrete is measured through the temperature measuring unit 1, and the temperature adjusting unit 2 adjusts the temperature of the concrete according to the temperature information of each measuring point, so that the automatic and intelligent maintenance of the concrete is realized; the temperature adjusting unit 2 comprises a blowing component 201, a spraying component 202, a water cooling component 203 and a heating component 204, and the adjusting modes are various and can be selected according to actual requirements, so that the applicability of the temperature adjusting unit is improved; meanwhile, each component can be correspondingly adjusted according to a specific temperature value, and accurate temperature adjustment is achieved.
In a specific embodiment, as shown in fig. 2, the temperature measuring unit 1 includes a plurality of temperature electronic tags 101, a leaky cable 102, a reader 103, and a controller 104; the plurality of temperature electronic tags 101 are arranged at temperature measuring points in the concrete in a layered manner and used for acquiring temperature information of the temperature measuring points and sending radio frequency signals containing corresponding position information and temperature information to the leakage cable 102; the leaky cable 102 is located inside the concrete and used for sending the radio frequency signal to the reader 103; the reader 103 is connected to the controller 104, and is configured to receive and demodulate the radio frequency signal, obtain data information, and send the data information to the controller 104. In addition, the reader 103 also transmits electromagnetic waves to the temperature electronic tag 101 through the leak cable 102 to supply power.
In a specific embodiment, as shown in fig. 2, each temperature electronic tag 101 is horizontally distributed in the interior of the concrete in two layers, wherein the temperature measuring points of the lower layer are uniformly distributed in the interior of the concrete, the temperature measuring points corresponding to the upper layer are located right above the temperature measuring points of the lower layer, the temperature measuring points of the upper layer and the temperature measuring points of the lower layer are located on the same vertical line, and the two temperature measuring points are spaced by a certain distance, so that the temperatures of different points of the concrete along the depth direction can be realized, the temperature difference between the two temperature measuring points can be obtained, and the subsequent better temperature adjustment can be facilitated. Of course, in other embodiments, three, four, or more layers may be provided.
In one embodiment, as shown in fig. 2, the temperature electronic tags 101 on the same vertical line are all mounted on the same telescopic rod 105. Wherein the telescopic rod 105 is formed by sleeving a plurality of sections of hollow rods 1051; each temperature electronic tag 101 corresponds to a section of the hollow rod 1051 and is mounted at the exposed end of the corresponding hollow rod 1051. The length of the telescopic rod 105 can be adjusted according to the requirement, so that the distance between two temperature electronic tags 101 on the same vertical line can be adjusted, for example, the larger the concrete thickness is, the larger the distance between two adjacent temperature electronic tags 101 is, and the use amount of the temperature electronic tags can be saved; meanwhile, the temperature electronic tag 101 can be conveniently extended into a narrow part or a reinforcing steel bar dense area to detect the temperature of the concrete.
Furthermore, an insulating layer (such as an insulating adhesive, not shown in the figure) is disposed between the temperature electronic tag 101 and the telescopic rod 105, and the insulating adhesive is used to block the interference of the telescopic rod 105 (generally made of a metal material) on the concrete temperature detection, so as to improve the heat insulation effect between the temperature electronic tag 101 and the telescopic rod 105 and improve the detection accuracy of the temperature electronic tag 101.
The arrangement mode and the working process of the temperature measuring unit 1 are as follows: firstly laying a leakage cable 102, arranging leakage holes of the leakage cable 102 according to the arrangement positions of measuring points, embedding temperature electronic tags 101 at the measuring points, and arranging one temperature electronic tag 101 at each measuring point. During testing, the reader 103 transmits electromagnetic waves to the temperature electronic tags 101 through the leakage cable 102 to provide electric energy for each temperature electronic tag 101, and the reader 103 receives radio frequency signals sent by the temperature electronic tags 101 at various measuring positions through the leakage cable 102, demodulates the radio frequency signals and sends the demodulated radio frequency signals to the controller 104. The arrangement mode can reduce the wiring workload and simplify the measurement process of the internal temperature of the concrete in the construction process.
In a specific embodiment, the blower assemblies 201 are blowers 2011, the number of the blowers is multiple, the blowers are uniformly arranged on the surface of the concrete, and the concrete is cooled by blowing air. The blowing amount of the blower 2011 is adjustable, and the speed can be adjusted according to the detected temperature information, and if the temperature is too high, the blowing amount is larger; otherwise, the blowing amount is reduced.
In a specific embodiment, the heating element 204 is a heating element such as a resistance heating wire or a steam pipe in the trestle auxiliary template, which can transfer heat to the concrete, and the concrete is heated by the resistance heating wire or the steam pipe (through which high temperature steam is introduced).
In one embodiment, the showerhead assembly 202 includes a plurality of showerheads 2021, and each showerhead 2021 is mounted above each uppermost temperature sensing point. The concrete is sprayed with water through the spray head 2021 for curing, and cracks are prevented from occurring in the concrete. In addition, each spray head 2021 can be independently controlled, the sprinkling amount of each spray head 2021 can be adjusted, and the adjustment can be performed according to the data of the corresponding temperature measurement point, so that the purpose of fine maintenance is achieved.
In a specific embodiment, as shown in fig. 3, the water cooling module 203 includes a water cooling pipe 2031, a water cooling pump 2032, and a water tank 2033, the water cooling pipe 2031 is laid inside the concrete, one end of the water cooling pipe 2031 is connected to an output end of the water cooling pump 2032, the other end of the water cooling pipe 2033 is connected to the water tank 2033, and an input end of the water cooling pump 2032 is connected to the water tank 2033. Wherein the water-cooled tube 2031 is S-shaped and is vertically arranged in the concrete, so that the water-cooled tube and the concrete have enough contact area, and the cooling effect is more obvious. Of course, the water-cooled pump 2032 may also be controlled to independently adjust the amount of the cold water, that is, the cold water may be adjusted according to the corresponding temperature, that is, the higher the temperature is, the higher the frequency of the corresponding water-cooled pump 2032 is, the more the amount of the cold water is, so as to achieve the purpose of rapid cooling. Of course, the water in the water tank 2033 exchanges heat with the external environment through a corresponding heat sink (e.g., a radiator or a heat dissipation fan), so as to ensure that the temperature thereof is within a proper range.
As shown in fig. 4, the invention also discloses an intelligent maintenance method based on the trestle bridge concrete intelligent maintenance system, which comprises the following steps:
1) acquiring temperature information of each measuring point in the concrete through a temperature measuring unit 1;
2) comparing the temperature of the concrete surface with a first preset value (range value); when the temperature of the surface of the concrete is higher than a first preset value, controlling the air blowing assembly 201 to perform air blowing operation on the surface of the concrete so as to reduce the temperature; otherwise, the concrete is heated through the heating component 204;
comparing the temperature inside the concrete with a second preset value (range value); when the temperature inside the concrete is higher than a second preset value, controlling the water cooling assembly 203 to perform water cooling operation on the inside of the concrete so as to reduce the temperature; otherwise, the concrete is heated through the heating component 204;
comparing the difference between the temperature inside the concrete and the temperature on the surface of the concrete with a preset difference, and controlling the spraying assembly 202 to spray water on the surface of the concrete when the difference is greater than the preset difference and the change rate of the difference is less than a certain value; wherein the rate of change of the difference is the rate of change of the difference over a period of time.
In the embodiment, in step 2), the blowing amount of the blowing assembly 201 is adjusted in real time according to the temperature of the concrete surface; the amount of cold water of the water cooling assembly 203 is adjusted in real time according to the temperature inside the concrete; the amount of water sprayed by the spray assembly 202 is adjusted in real time based on the difference and the rate of change of the difference.
The maintenance system and method are described in detail with reference to a specific embodiment:
the temperature measurement is carried out by adopting two layers of temperature electronic tags 101 which are horizontally distributed in the concrete, wherein the temperature difference between the adjacent temperature electronic tags 101 of the upper layer and the lower layer can reflect the temperature difference between the upper layer and the lower layer of the concrete, and if the distance between the upper layer and the upper surface of the concrete is 5cm, the distance between the lower layer and the upper surface of the concrete is 25cm, and the distance is 20cm (the data can accurately reflect the change of the temperature of the concrete according to the optimal value obtained by field experience). When the temperature measurement is performed, the measurement may be performed at intervals (e.g., 10 minutes).
Specifically, every certain time, for example, 10min, the temperature electronic tags 101 measure the temperature data of the corresponding measuring points, and if the measured data of the upper-layer temperature measuring points is greater than a first preset value (preset according to the concrete process), the air blowing assembly 201 (the air blower 2011) is used for blowing air to the surface of the concrete, so as to reduce the temperature of the surface of the concrete. If the measured data of the lower temperature measurement point is greater than a second preset value (preset according to the concrete process), the inside of the concrete is cooled by the water cooling assembly 203 (the water cooling pipe 2031) so as to achieve the purpose of rapidly cooling the inside of the concrete. When the measured temperature difference between the upper layer and the lower layer is greater than the preset difference, the water cooling component 203 (the water cooling pipe 2031) cools the inside of the concrete, and the surface of the concrete can be heated (heated by the heating component 4) or insulated (a heat preservation layer is laid) to reduce the temperature difference and prevent cracking.
In addition, when the temperature of each temperature measuring point is monitored, a corresponding temperature curve is obtained according to the temperature value of each time point, and the corresponding technological process is judged according to the temperature curve. Specifically, in the above process, when the temperature difference is at the maximum and in the downward trend, it indicates that the temperature difference inside the concrete is decreasing, and at this time, the temperature of the surface of the concrete is high, and a dry state is likely to occur, and at this time, the spray assembly 202 (each spray head 2021) is controlled to spray water to the concrete for moisture retention and curing. When the sprinkling operation is carried out, the sprinkling amount of each sprinkling head 2021 can be independently controlled according to the temperature difference corresponding to each measuring point; meanwhile, the sprinkling amount of each spraying head 2021 can be adjusted according to the change of the temperature difference, if the temperature difference is larger, the sprinkling amount is larger, otherwise, the sprinkling amount is reduced, the relation between the sprinkling amount and the temperature difference (such as a corresponding curve graph) can be specifically preset, and the sprinkling amount is accurately controlled according to the curve graph, so that the accurate maintenance of the concrete is realized.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (10)
1. An intelligent trestle concrete maintenance system is characterized by comprising a temperature measuring unit (1), a temperature adjusting unit (2) and a control unit (3); the temperature adjusting unit (2) comprises a blower assembly (201), a spraying assembly (202), a water cooling assembly (203) and a heating assembly (204); wherein the air blast assembly (201) is used for performing air blast operation on the surface of the concrete to cool down; the spraying assembly (202) is used for spraying water on the surface of the concrete; the water cooling assembly (203) is used for performing water cooling operation on the interior of the concrete so as to reduce the temperature; the heating component (204) is used for heating the concrete; the temperature measuring unit (1) is used for collecting temperature information of each measuring point in the trestle concrete and sending the temperature information to the control unit (3); and the control unit (3) adjusts the air blowing operation of the air blowing assembly (201), the water spraying operation of the spraying assembly (202), the water cooling operation of the water cooling assembly (203) or the heating operation of the heating assembly (204) according to the temperature information so as to adjust the temperature of the concrete.
2. Intelligent maintenance system for trestle concrete according to claim 1, characterized in that each of said temperature measuring units (1) comprises a plurality of temperature electronic tags (101), leaky cables (102), readers (103) and controllers (104); the temperature electronic tags (101) are arranged at temperature measuring points in the concrete in a layered mode and used for collecting temperature information of the temperature measuring points and sending radio frequency signals containing corresponding position information and temperature information to the leakage cable (102); the leaky cable (102) is located inside the concrete and is used for transmitting the radio frequency signal to a reader (103); the reader (103) is connected with the controller (104) and used for receiving and demodulating the radio frequency signal to obtain data information and sending the data information to the controller (104).
3. Intelligent maintenance system of trestle concrete according to claim 2, characterized in that each temperature electronic tag (101) is distributed in at least two layers in the interior of the concrete, wherein the temperature electronic tags (101) between adjacent layers are arranged in the vertical direction.
4. The trestle bridge concrete intelligent maintenance system of claim 3, further comprising a telescopic rod (105), wherein the telescopic rod (105) is formed by sleeving a plurality of sections of hollow rods (1051); a plurality of temperature electronic tags (101) in the same vertical direction are sequentially arranged on the telescopic rod (105), and each temperature electronic tag (101) corresponds to one section of hollow rod (1051) and is arranged at the exposed end of the corresponding hollow rod (1051).
5. The trestle bridge concrete intelligent maintenance system according to any one of claims 1-4, wherein the blower assembly (201) is a blower (2011); the heating component (204) is a resistance heating wire or a steam pipeline in an auxiliary template of the trestle.
6. The trestle bridge concrete intelligent curing system according to any one of claims 1-4, wherein the spray assembly (202) comprises a plurality of spray heads (2021), and each spray head (2021) is correspondingly installed above each temperature measuring point.
7. The trestle bridge concrete intelligent maintenance system according to any one of claims 1-4, wherein the water-cooling assembly (203) comprises a water-cooling pipe (2031), a water-cooling pump (2032) and a water tank (2033), the water-cooling pipe (2031) is laid inside the concrete, one end of the water-cooling pipe is connected with the output end of the water-cooling pump (2032), the other end of the water-cooling pipe is connected with the water tank (2033), and the input end of the water-cooling pump (2032) is connected with the water tank (2033).
8. Intelligent trestle concrete curing system according to claim 7, characterized in that the water-cooled tubes (2031) are arranged vertically inside the concrete in an S-shape.
9. An intelligent maintenance method based on the trestle bridge concrete intelligent maintenance system of any one of claims 1 to 8, characterized by comprising the steps of:
1) acquiring temperature information of each measuring point in the concrete through a temperature measuring unit (1);
2) comparing the temperature of the concrete surface with a first preset value; when the temperature of the surface of the concrete is higher than a first preset value, controlling the air blowing assembly (201) to perform air blowing operation on the surface of the concrete so as to reduce the temperature; otherwise, controlling the heating component (204) to heat the concrete;
comparing the temperature inside the concrete with a second preset value; when the temperature inside the concrete is higher than a second preset value, controlling the water cooling assembly (203) to carry out water cooling operation on the inside of the concrete so as to reduce the temperature; otherwise, controlling the heating component (204) to heat the concrete;
comparing the difference between the temperature inside the concrete and the temperature on the surface of the concrete with a preset difference, and controlling the spraying assembly (202) to spray water on the surface of the concrete when the difference is greater than the preset difference and the change rate of the difference is less than a certain value; wherein the rate of change of the difference is the rate of change of the difference over a period of time.
10. The intelligent curing method according to claim 9, wherein in step 2), the blast amount of the blast assembly (201) is adjusted in real time according to the temperature of the concrete surface; the amount of cold water of the water cooling assembly (203) is adjusted in real time according to the temperature inside the concrete; and the sprinkling quantity of the sprinkling assembly (202) is adjusted in real time according to the difference value and the change rate of the difference value.
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