CN114319248A - Concrete dam warehouse surface maintenance device and method - Google Patents
Concrete dam warehouse surface maintenance device and method Download PDFInfo
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- CN114319248A CN114319248A CN202210007476.2A CN202210007476A CN114319248A CN 114319248 A CN114319248 A CN 114319248A CN 202210007476 A CN202210007476 A CN 202210007476A CN 114319248 A CN114319248 A CN 114319248A
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- 239000004567 concrete Substances 0.000 title claims abstract description 263
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000012423 maintenance Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 230000008569 process Effects 0.000 claims abstract description 19
- 230000008859 change Effects 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 34
- 230000005855 radiation Effects 0.000 claims description 33
- 238000005507 spraying Methods 0.000 claims description 32
- 238000011156 evaluation Methods 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 4
- 230000008016 vaporization Effects 0.000 claims description 2
- 238000009834 vaporization Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002309 gasification Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011382 roller-compacted concrete Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The embodiment of the invention discloses a concrete dam storehouse surface maintenance device and method, which belong to the technical field of concrete dam maintenance. According to the invention, through the corresponding matching use of each structure, the temperature information measured by the sensor and the target temperature information, a corresponding temperature change process line is established, whether the calculated internal and external temperature difference stress of the concrete bin meets the standard requirement of the concrete pouring bin is judged, the device is ensured not to influence the concrete construction process and the mix proportion of concrete, no water accumulation on the bin surface can be realized, the internal and external temperature difference is further ensured within a reasonable range, the standard exceeding of the ambient temperature in the bin is prevented, the target temperature information can be selectively corrected according to the judgment result, the installation is convenient, and the maintenance of the concrete bin can be efficiently and automatically realized.
Description
Technical Field
The embodiment of the invention relates to the technical field of concrete dam maintenance, in particular to a concrete dam storehouse surface maintenance device and method.
Background
Concrete dams are dams formed by pouring or rolling concrete or assembling precast concrete blocks, and have the structural characteristics of being divided into gravity dams, large-head dams and arch dams; the concrete dam can be divided into a normal concrete dam, a roller compacted concrete dam and an assembled concrete dam according to construction characteristics, and can be divided into a non-overflow concrete dam and an overflow concrete dam according to whether overflow is carried out through the dam top, besides the overflow of the dam top, a water outlet can be arranged in the middle of the dam body in a water drainage mode of the concrete dam so that flood can be discharged quickly before the arrival of flood, or the water outlet is arranged at the bottom of the dam body and used for reducing the reservoir water level or carrying out sand washing.
The warehouse surface maintenance is one of important links of crack resistance in the construction process of mass concrete, and engineering practices show that the temperature of the concrete rises greatly from warehousing to covering by another layer of concrete, so that the pouring temperature and the highest temperature are difficult to control;
at present, according to the above engineering experience, the defects of difficult arrangement and inconvenient construction of the cabin surface temperature control mode are found in the construction process, the normal work of various engineering machines such as cable cranes, large-scale door machines and the like is interfered, and meanwhile, due to the installation environment of the concrete dam, the concrete dam is greatly influenced by wind, is difficult to fix and has poor safety.
Disclosure of Invention
Therefore, the embodiment of the invention provides a concrete dam warehouse maintenance device and a method, which aim to solve the problems that in the prior art, the arrangement is difficult, the construction is inconvenient, the normal work of various engineering machinery such as cable cranes, large-scale door cranes and the like is interfered, and meanwhile, due to the installation environment of a concrete dam, the concrete dam is greatly influenced by wind, is difficult to fix and has poor safety.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: a concrete dam storehouse surface maintenance device comprises a concrete dam main body, wherein a concrete storehouse is arranged at the top of the concrete dam main body, a first temperature sensor is arranged inside the concrete storehouse, a second temperature sensor is arranged on the surface of the concrete storehouse, an air temperature sensor is arranged on one side of the top surface of the concrete storehouse, a solar radiation instrument is arranged at the top of the concrete storehouse, and an air speed sensor is arranged on one side of the solar radiation instrument;
the concrete storehouse surface both sides all are provided with the flow guide box, the upper surface of flow guide box is provided with a plurality of stay tubes, and is a plurality of the one end of stay tube all is provided with atomizer.
Furthermore, a storage box is arranged at one end of the top of the concrete dam body, a flow guide pipe is arranged at one end of each flow guide box, and one end of each flow guide pipe is communicated with the storage box.
Furthermore, one side of the storage box is provided with a water supply device, the output end of the water supply device is communicated with the storage box through a hose, and one end of the diversion box, which is close to the storage box, is provided with a water temperature sensor.
Further, a mounting groove is formed in one side of the concrete dam body, a protective box is arranged in the mounting groove, and the protective box is mounted in the mounting groove through bolts.
Furthermore, a data acquisition unit is arranged in the protection box, an evaluation unit is arranged on one side of the data acquisition unit, and a control unit is arranged on one side of the evaluation unit.
Furthermore, the data acquisition unit is respectively connected with the first temperature sensor, the second temperature sensor, the air temperature sensor, the solar radiation instrument, the wind speed sensor and the water temperature sensor through leads.
Furthermore, the control unit is respectively connected with the water supply equipment and the data acquisition unit through leads.
A maintenance method of a concrete dam warehouse surface maintenance device specifically comprises the following steps:
step one; firstly, according to actual requirements, a worker installs a first temperature sensor, a second temperature sensor, an air temperature sensor, a solar radiation instrument and an air speed sensor at specified positions, and installs structures such as a diversion box, a support pipe and an atomizing nozzle on two sides of the surface of a concrete bin respectively according to the actual requirements;
step two; the method comprises the steps that through the mutual matching use of a first temperature sensor, a second temperature sensor, an air temperature sensor, a solar radiation instrument, an air speed sensor and a water temperature sensor, the surface temperature information of a concrete bin, the internal temperature information of the concrete bin, the air temperature information above the concrete bin, the solar radiation power information above the concrete bin, the air flow rate information above the concrete bin, the air speed grade information and the water temperature information corresponding to the concrete bin are collected;
step three; acquiring the required spray volume per minute of the concrete bin according to the acquired information and preset target temperature information corresponding to the concrete bin, introducing an external water source into the storage box through water supply equipment according to the spray volume per minute, introducing water in the storage box into the diversion box through the diversion pipe respectively, spraying out the water through the atomizing nozzles, uniformly spraying the surface of the concrete bin, and acquiring the required spray volume per minute of the concrete bin through the control unit;
in the above formula, Q is the spray volume per minute required by the concrete silo, T1Is the temperature information above the concrete bin before spraying, T2For preset target gas temperature information, T, of concrete bin surface3Is the temperature information inside the concrete silo, t2Is the surface temperature information of the concrete silo, tWater (W)As water temperature information, CAir conditionerIs the specific heat capacity of air, vWind powerIs the information of the air velocity above the concrete bin and the information of the wind velocity grade, rhoAir conditionerThe air density is represented by w, the width of a concrete bin surface is represented by L, the length of the concrete bin surface is represented by h, the distance between a spray nozzle and the concrete bin surface is represented by h, wind is the air speed grade information above the concrete bin, L is the preset average gasification latent heat of water particles, and P is the solar radiation power information above the concrete bin during spraying;
step four; establishing a temperature field model of the concrete bin according to temperature information acquired by the evaluation unit through the temperature sensor to obtain temperature values of all position points in the concrete bin, and calculating the internal and external temperature difference stress of the concrete bin according to the obtained temperature values of all position points in the concrete bin;
step five; correcting the target temperature information according to the internal and external temperature difference stress of the concrete bin, re-acquiring the spray volume per minute required by the concrete bin according to the corrected target temperature information, and uniformly spraying the surface of the concrete bin according to the acquired spray volume per minute;
in the formula, the internal and external temperature difference stress of the concrete bin is calculated, and the internal and external temperature difference stress of the concrete bin is calculated, wherein σ is the internal and external temperature difference stress, K is a stress relaxation coefficient caused by preset creep, α is a preset linear expansion coefficient, μ is a poisson ratio, E is a concrete elastic modulus, T (y) is a temperature value at a stress calculation point y in the temperature field model, a (epsilon) is a positive stress influence coefficient generated on the calculation point y when a pair of unit loads F is added at the calculation point y ═ epsilon, T (epsilon) is a temperature value at the stress calculation point epsilon in the temperature field model, and Δ y is an increment of the stress calculation point y in the temperature field model;
step six; the temperature information measured by each sensor and the target temperature information can be firstly measured, a corresponding temperature change process line is established, whether the calculated temperature difference stress inside and outside the concrete bin meets the standard requirement of a poured concrete bin is judged, the standard requirement can be a national unified standard, when the temperature difference stress inside and outside the concrete bin meets the standard requirement, the previous spraying amount per minute is continuously kept, if the temperature difference stress inside and outside the concrete bin does not meet the standard requirement, the target temperature information is corrected according to the change trend of the temperature process line corresponding to the target temperature information, the spraying amount per minute required by the concrete bin is obtained again according to the corrected target temperature information, the spraying amount per minute is carried out on the concrete bin according to the spraying amount per minute, the steps are repeated, and the maintenance of the surface of the concrete bin is realized.
The embodiment of the invention has the following advantages:
1. according to the invention, through the corresponding matching use of the first temperature sensor, the second temperature sensor, the air temperature sensor, the solar radiation instrument, the wind speed sensor and the water temperature sensor, the target air temperature information can be corrected according to the internal and external temperature difference stress of the concrete bin, whether the internal and external temperature difference stress of the concrete bin meets the preset standard requirement or not is judged, meanwhile, the target air temperature information can be selectively corrected according to the judgment result, the installation is convenient, and the maintenance of the concrete bin can be efficiently and automatically realized;
2. when the device is used, the guide box, the support pipe and the atomizing nozzle which are arranged outside the concrete bin are used for ensuring that the device does not influence the concrete construction process and the mix proportion of concrete, and meanwhile, the device is sprayed in an atomizing mode, so that no water accumulation on the bin surface can be realized, the temperature difference between the inside and the outside is ensured within a reasonable range, and the environmental temperature in the bin is prevented from exceeding the standard;
3. in the process of curing, when the temperature difference stress inside and outside the concrete bin meets the standard requirement, continuously keeping the previous spray volume per minute, if the temperature difference stress inside and outside the concrete bin does not meet the standard requirement, correcting the target temperature information according to the change trend of a temperature process line corresponding to the target temperature information, re-obtaining the spray volume per minute required by the concrete bin according to the corrected target temperature information by the method shown in the figure, spraying the concrete bin according to the spray volume per minute, and repeating the steps to realize the curing of the surface of the concrete bin;
in conclusion, through the corresponding matching use of the structures, the temperature information measured by the sensor and the target temperature information establish a corresponding temperature change process line, whether the calculated temperature difference stress inside and outside the concrete bin meets the standard requirement of the concrete pouring bin is judged, the device is ensured not to influence the concrete construction process and the mix proportion of concrete, no water accumulation on the bin surface can be realized, the temperature difference inside and outside is ensured to be within a reasonable range, the ambient temperature inside the bin is prevented from exceeding the standard, meanwhile, the target temperature information can be selectively corrected according to the judgment result, the installation is convenient, and the maintenance of the concrete bin can be efficiently and automatically realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the overall partial structure of the present invention;
FIG. 3 is a schematic view of a portion of the structure of FIG. 1;
FIG. 4 is a partial structural plan view of the baffle box, the support tube and the atomizer of the present invention;
FIG. 5 is a front view of the internal structure of the protective case of the present invention;
FIG. 6 is a front view of the baffle box, support tube and atomizer of the present invention;
FIG. 7 is a flowchart illustrating the overall operation of the present invention;
in the figure: 1. a concrete dam body; 2. a concrete silo; 3. a first temperature sensor; 4. a second temperature sensor; 5. an air temperature sensor; 6. a solar radiation meter; 7. a wind speed sensor; 8. a flow guide box; 9. supporting a tube; 10. an atomizing spray head; 11. a storage box; 12. a flow guide pipe; 13. a water supply device; 14. mounting grooves; 15. a protective box; 16. a data acquisition unit; 17. an evaluation unit; 18. a control unit; 19. a water temperature sensor.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1-7 in the specification, the concrete dam storehouse surface maintenance device comprises a concrete dam main body 1, a concrete storehouse 2 is arranged at the top of the concrete dam main body 1, a first temperature sensor 3 is arranged inside the concrete storehouse 2, a second temperature sensor 4 is arranged on the surface of the concrete storehouse 2, an air temperature sensor 5 is arranged on one side of the top surface of the concrete storehouse 2, a solar radiation instrument 6 is arranged at the top of the concrete storehouse 2, and a wind speed sensor 7 is arranged on one side of the solar radiation instrument 6.
The concrete storehouse 2 both sides of surface all are provided with flow guide box 8, and flow guide box 8's upper surface is provided with a plurality of stay tubes 9, and the one end of a plurality of stay tubes 9 all is provided with atomizer 10.
The implementation scenario is specifically as follows:
firstly, a worker firstly installs a first temperature sensor 3 at the bottom of the inner wall of a concrete bin 2, installs a second temperature sensor 4 at the surface of the concrete bin 2, installs an air temperature sensor 5 at one end of the surface of the concrete bin 2, installs a solar radiation instrument 6 and an air velocity sensor 7 at the top of the concrete bin 2, then installs two diversion boxes 8 at two sides of the surface of the concrete bin 2 respectively, and installs a proper number of support pipes 9 and atomizing nozzles 10 at the top of the two diversion boxes 8 according to actual requirements, and in the using process, the first temperature sensor 3, the second temperature sensor 4, the air temperature sensor 5, the solar radiation instrument 6, the air velocity sensor 7 and the water temperature sensor 19 are correspondingly matched for use so as to collect the surface temperature information of the concrete bin 2, the internal temperature information of the concrete bin 2 and the air temperature information above the concrete bin 2, Solar radiation power information above the concrete bin 2, air velocity information and air velocity grade information above the concrete bin 2, and water temperature information.
Referring to fig. 2, 3 and 6, a storage box 11 is arranged at one end of the top of the concrete dam body 1, a guide pipe 12 is arranged at one end of each of two guide boxes 8, one end of each guide pipe 12 is communicated with the storage box 11, the storage box 11 can store water, so that water can be conveniently circulated, the guide pipe 12 can guide the water in the storage box 11, and the water in the storage box 11 can be conveniently guided into the guide boxes 8 through the guide pipe 12, so that the concrete dam is convenient to use.
Referring to fig. 2, 3 and 6, a water supply device 13 is arranged on one side of the storage tank 11, an output end of the water supply device 13 is communicated with the storage tank 11 through a hose, a water temperature sensor 19 is arranged at one end of the diversion tank 8 close to the storage tank 11, the water supply device 13 can play a driving role, external water flow can be conveniently guided into the storage tank 11, and the water temperature sensor 19 can play a detecting role on water temperature to measure water temperature information.
Referring to the attached drawing 1, a mounting groove 14 is formed in one side of a concrete dam body 1, a protective box 15 is arranged in the mounting groove 14, the protective box 15 is mounted in the mounting groove 14 through bolts, the mounting groove 14 can play a limiting role, a worker can conveniently mount the protective box 15, and convenience in mounting the protective box 15 is improved.
Referring to fig. 5, a data acquisition unit 16 is arranged inside the protective box 15, an evaluation unit 17 is arranged on one side of the data acquisition unit 16, a control unit 18 is arranged on one side of the evaluation unit 17, the protective box 15 has the functions of storage and protection, and is convenient for workers to install the data acquisition unit 16, the evaluation unit 17 and the control unit 18, so that the data acquisition unit 16, the evaluation unit 17, the control unit 18 and other mechanisms are prevented from being damaged by external materials, and the service life of the mechanisms is prolonged.
Referring to fig. 1, 2 and 5, the data acquisition unit 16 is respectively connected to the first temperature sensor 3, the second temperature sensor 4, the air temperature sensor 5, the solar radiation meter 6, the wind speed sensor 7 and the water temperature sensor 19 through wires, so as to facilitate the inspection of the surface temperature information of the concrete bin 2, the internal temperature information of the concrete bin 2, the air temperature information above the concrete bin 2, the solar radiation power information above the concrete bin 2, the air flow rate information and the wind speed grade information above the concrete bin 2 and the water temperature information.
Referring to fig. 1, 2 and 5, the control unit 18 is connected to the water supply device 13 and the data acquisition unit 16 through wires, and the control unit 18 is configured to generate a time-varying change coordinate diagram of each corresponding piece of information through corresponding cooperation of the water supply device 13 and the data acquisition unit 16.
The implementation scenario is specifically as follows:
when the water temperature sensor is used again, the data acquisition unit 16 is respectively connected with the first temperature sensor 3, the second temperature sensor 4, the air temperature sensor 5, the solar radiation instrument 6, the wind speed sensor 7 and the water temperature sensor 19 through leads, so that the surface temperature information of the concrete bin 2, the internal temperature information of the concrete bin 2, the air temperature information above the concrete bin 2, the solar radiation power information above the concrete bin 2, the air flow rate information above the concrete bin 2, the wind speed grade information and the water temperature information can be conveniently checked, meanwhile, the control unit 18 generates a change coordinate graph of each corresponding information along with the change of time through the corresponding matching use of the water supply equipment 13 and the data acquisition unit 16, the water supply equipment 13 can play a driving role, so that the external water flow can be conveniently guided into the storage box 11, the water temperature sensor 19 can play a role in detecting the water temperature and measuring the water temperature information, can play the effect of storage to water through storage box 11, make things convenient for the water circulation, and honeycomb duct 12 then can play the effect of water conservancy diversion to the water of storage box 1l inside, and convenient use is in 11 inside water of storage box are through leading-in baffle box 8 of honeycomb duct 12.
A maintenance method of a concrete dam warehouse surface maintenance device specifically comprises the following steps:
step one; firstly, according to actual requirements, a worker installs a first temperature sensor 3, a second temperature sensor 4, an air temperature sensor 5, a solar radiation instrument 6 and an air speed sensor 7 at specified positions, and installs structures such as a diversion box 8, a support pipe 9 and an atomizing nozzle 10 on two sides of the surface of a concrete bin 2 respectively according to the actual requirements;
step two; the method comprises the steps that through the mutual matching use of a first temperature sensor 3, a second temperature sensor 4, an air temperature sensor 5, a solar radiation instrument 6, an air speed sensor 7 and a water temperature sensor 19, the surface temperature information of a concrete bin 2 corresponding to the concrete bin 2, the internal temperature information of the concrete bin 2, the air temperature information above the concrete bin 2, the solar radiation power information above the concrete bin 2, the air speed information and the air speed grade information above the concrete bin 2 and the water temperature information are collected;
step three; acquiring the required spray volume per minute of the concrete bin 2 according to the acquired information and preset target air temperature information corresponding to the concrete bin 2, introducing an external water source into a storage box 11 through a water supply device 13 according to the spray volume per minute, introducing water in the storage box 11 into a diversion box 8 through a diversion pipe 12 respectively, spraying the water through an atomizing nozzle 10, uniformly spraying the surface of the concrete bin 2, and acquiring the required spray volume per minute of the concrete bin 2 through a control unit 18;
in the above formula, Q is the amount of spray per minute, T, required by the concrete silo 21Is the temperature information above the concrete bin 2 before spraying, T2For the preset 2-surface target gas temperature information of the concrete bin, T3Is the internal temperature information of the concrete silo 2, t2Is the surface temperature information of the concrete bin 2, tWater (W)As water temperature information, CAir conditionerIs the specific heat capacity of air, vWind powerAir flow rate information and wind speed grade information above the concrete bin 2 are provided, rho air is air density, W is the width of the surface of the concrete bin 2, L is the length of the surface of the concrete bin 2, h is the distance between a spray nozzle and the surface of the concrete bin 2, wind is the wind speed grade information above the concrete bin 2, L is preset average gasification latent heat of water particles, and P is solar radiation power information above the concrete bin 2 during spraying;
step four; establishing a temperature field model of the concrete bin 2 according to the temperature information acquired by the evaluation unit 17 through the temperature sensor 5 to obtain temperature values of all position points in the concrete bin 2, and calculating the internal and external temperature difference stress of the concrete bin 2 according to the obtained temperature values of all position points in the concrete bin 2;
step five; correcting the target temperature information according to the internal and external temperature difference stress of the concrete bin 2, re-obtaining the spray volume per minute required by the concrete bin 2 according to the corrected target temperature information, and uniformly spraying the surface of the concrete bin 2 according to the obtained spray volume per minute;
in the above formula, the internal and external temperature difference stresses of the concrete bin 2 are calculated, where σ is the internal and external temperature difference stresses, K is a preset stress relaxation coefficient caused by creep, α is a preset linear expansion coefficient, μ is a poisson ratio, E is a concrete elastic modulus, T (y) is a temperature value at a stress calculation point y in the temperature field model, a (epsilon) is a positive stress influence coefficient generated on the calculation point y when a pair of unit loads F ═ 1 is added at the calculation point y ═ epsilon, T (epsilon) is a temperature value of the stress calculation point epsilon in the temperature field model, and Δ y is an increment of the stress calculation point y in the temperature field model;
step six; the temperature information measured by each sensor and the target temperature information can be firstly measured, a corresponding temperature change process line is established, whether the calculated temperature difference stress inside and outside the concrete bin 2 meets the standard requirement of the concrete pouring bin 2 or not is judged, the standard requirement can be a national unified standard, when the temperature difference stress inside and outside the concrete bin 2 meets the standard requirement, the previous spraying amount per minute is continuously kept, if the temperature difference stress inside and outside the concrete bin 2 does not meet the standard requirement, the target temperature information is corrected according to the change trend of the temperature process line corresponding to the target temperature information, the spraying amount per minute required by the concrete bin 2 is obtained again according to the corrected target temperature information, the spraying amount per minute is sprayed on the concrete bin 2, and the steps are repeated, so that the maintenance of the surface of the concrete bin 2 is realized.
The application process of the embodiment of the invention is as follows:
firstly, according to actual requirements, a worker installs a first temperature sensor 3, a second temperature sensor 4, an air temperature sensor 5, a solar radiation instrument 6 and an air speed sensor 7 at specified positions, and installs structures such as a diversion box 8, a support pipe 9, an atomizing nozzle 10 and the like at two sides of the surface of a concrete bin 2 respectively according to the actual requirements, and collects surface temperature information of the concrete bin 2 corresponding to the concrete bin 2, internal temperature information of the concrete bin 2, air temperature information above the concrete bin 2, solar radiation power information above the concrete bin 2, air speed information and air speed grade information above the concrete bin 2 and water temperature information through the mutual matching use of the first temperature sensor 3, the second temperature sensor 4, the air temperature sensor 5, the solar radiation instrument 6, the air speed sensor 7 and the water temperature sensor 19;
acquiring the required spray volume per minute of the concrete bin 2 according to the acquired information and a preset target air temperature information corresponding to the concrete bin 2, introducing an external water source into the storage box 11 through a water supply device 13 according to the spray volume per minute, introducing water in the storage box 11 into the flow guide box 8 through the flow guide pipe 12 respectively, spraying the water through the atomizing nozzle 10, uniformly spraying the surface of the concrete bin 2, and acquiring the required spray volume per minute of the concrete bin 2 through the control unit 18;
wherein Q is the spray volume per minute, T, required by the concrete bin 21Is the temperature information above the concrete bin 2 before spraying, T2For the preset 2-surface target gas temperature information of the concrete bin, T3Is the internal temperature information of the concrete silo 2, t2Is the surface temperature information of the concrete bin 2, tWater (W)As water temperature information, CAir conditionerIs the specific heat capacity of air, vWind powerIs the information of the air velocity above the concrete bin 2 and the information of the wind velocity grade, rhoAir conditionerThe air density is represented by w, the width of the surface of the concrete bin 2 is represented by L, the length of the surface of the concrete bin 2 is represented by h, the distance between a spray nozzle and the surface of the concrete bin 2 is represented by h, wind is the air speed grade information above the concrete bin 2, L is the preset average latent heat of vaporization of water particles, and P is the solar radiation power information above the concrete bin 2 during spraying;
establishing a temperature field model of the concrete bin 2 according to temperature information acquired by the evaluation unit 17 through the temperature sensor 5 to obtain temperature values of all position points in the concrete bin 2, calculating internal and external temperature difference stress of the concrete bin 2 according to the obtained temperature values of all position points in the concrete bin 2, correcting target temperature information according to the internal and external temperature difference stress of the concrete bin 2, re-obtaining the spray volume per minute required by the concrete bin 2 according to the corrected target temperature information, and uniformly spraying the surface of the concrete bin 2 according to the obtained spray volume per minute;
wherein, the internal and external temperature difference stress of the concrete bin 2 is calculated, and the internal and external temperature difference stress of the concrete bin 2 is calculated;
wherein, σ is the internal and external temperature difference stress, K is the stress relaxation coefficient caused by the preset creep, α is the preset linear expansion coefficient, μ is the poisson ratio, E is the concrete elastic modulus, T (y) is the temperature value at the stress calculation point y in the temperature field model, a (epsilon) is the positive stress influence coefficient generated at the calculation point y when a pair of unit loads F is added at the calculation point y which is epsilon and is 1, T (epsilon) is the temperature value at the stress calculation point epsilon in the temperature field model, and Δ y is the increment of the stress calculation point y in the temperature field model;
the temperature information measured by each sensor and the target temperature information can be firstly measured, a corresponding temperature change process line is established, whether the calculated temperature difference stress inside and outside the concrete bin 2 meets the standard requirement of the concrete pouring bin 2 or not is judged, the standard requirement can be a national unified standard, when the temperature difference stress inside and outside the concrete bin 2 meets the standard requirement, the previous spraying amount per minute is continuously kept, if the temperature difference stress inside and outside the concrete bin 2 does not meet the standard requirement, the target temperature information is corrected according to the change trend of the temperature process line corresponding to the target temperature information, the spraying amount per minute required by the concrete bin 2 is obtained again according to the corrected target temperature information, the spraying amount per minute is sprayed on the concrete bin 2, and the steps are repeated, so that the maintenance of the surface of the concrete bin 2 is realized.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
Claims (8)
1. The utility model provides a concrete dam storehouse face curing means, includes concrete dam main part (1), its characterized in that: a concrete bin (2) is arranged at the top of the concrete dam body (1), a first temperature sensor (3) is arranged inside the concrete bin (2), a second temperature sensor (4) is arranged on the surface of the concrete bin (2), an air temperature sensor (5) is arranged on one side of the top surface of the concrete bin (2), a solar radiation instrument (6) is arranged at the top of the concrete bin (2), and an air speed sensor (7) is arranged on one side of the solar radiation instrument (6);
the concrete storehouse is characterized in that flow guide boxes (8) are arranged on two sides of the surface of the concrete storehouse (2), a plurality of supporting pipes (9) are arranged on the upper surface of each flow guide box (8), and one ends of the supporting pipes (9) are provided with atomizing nozzles (10).
2. The concrete dam silo surface maintenance device of claim 1, wherein: the concrete dam is characterized in that a storage box (11) is arranged at one end of the top of the concrete dam body (1), a guide pipe (12) is arranged at one end of each guide box (8), and one end of each guide pipe (12) is communicated with the storage box (11).
3. The concrete dam silo surface maintenance device of claim 2, wherein: one side of the storage tank (11) is provided with a water supply device (13), the output end of the water supply device (13) is communicated with the storage tank (11) through a hose, and one end, close to the storage tank (11), of the diversion tank (8) is provided with a water temperature sensor (19).
4. The concrete dam silo surface maintenance device of claim 1, wherein: a mounting groove (14) is formed in one side of the concrete dam body (1), a protective box (15) is arranged in the mounting groove (14), and the protective box (15) is mounted in the mounting groove (14) through bolts.
5. The concrete dam silo surface maintenance device of claim 4, wherein: the protection box is characterized in that a data acquisition unit (16) is arranged in the protection box (15), an evaluation unit (17) is arranged on one side of the data acquisition unit (16), and a control unit (18) is arranged on one side of the evaluation unit (17).
6. The concrete dam silo surface maintenance device of claim 5, wherein: the data acquisition unit (16) is respectively connected with the first temperature sensor (3), the second temperature sensor (4), the air temperature sensor (5), the solar radiation instrument (6), the wind speed sensor (7) and the water temperature sensor (19) through leads.
7. The concrete dam silo surface maintenance device of claim 5, wherein: the control unit (18) is respectively connected with the water supply equipment (13) and the data acquisition unit (16) through leads.
8. The maintenance method of the concrete dam silo surface maintenance device of any one of claims 1 to 7, wherein: the method specifically comprises the following steps:
step one; firstly, according to actual requirements, a worker installs a first temperature sensor (3), a second temperature sensor (4), an air temperature sensor (5), a solar radiation instrument (6) and an air speed sensor (7) at specified positions, and installs structures such as a diversion box (8), a support pipe (9) and an atomizing nozzle (10) at two sides of the surface of a concrete bin (2) respectively according to the actual requirements;
step two; the method comprises the steps that through the mutual matching use of a first temperature sensor (3), a second temperature sensor (4), an air temperature sensor (5), a solar radiation instrument (6), an air speed sensor (7) and a water temperature sensor (19), surface temperature information of a concrete bin (2), internal temperature information of the concrete bin (2), air temperature information above the concrete bin (2), solar radiation power information above the concrete bin (2), air flow speed information and air speed grade information above the concrete bin (2) and water temperature information corresponding to the concrete bin (2) are collected;
step three; acquiring the required spray volume per minute of the concrete bin (2) according to the acquired information and preset target air temperature information corresponding to the concrete bin (2), introducing an external water source into a storage box (11) through a water supply device (13) according to the spray volume per minute, introducing water in the storage box (11) into a diversion box (8) through a diversion pipe (12), spraying out the water through an atomizing nozzle (10), uniformly spraying the surface of the concrete bin (2), and acquiring the required spray volume per minute of the concrete bin (2) through a control unit (18);
in the above formula, Q is the required spraying amount per minute of the concrete bin (2), T1Is the temperature information T above the concrete bin (2) before spraying2Is preset target gas temperature information of the concrete bin (2), T3Is the internal temperature information of the concrete bin (2), t2Is the surface temperature information of the concrete bin (2), tWater (W)As water temperature information, CAir conditionerIs the specific heat capacity of air, vWind powerIs the information of the air velocity and the air velocity grade above the concrete bin (2), rhoAir conditionerThe air density is represented by w, the surface width of the concrete bin (2), L is the surface length of the concrete bin (2), h is the distance between a spray nozzle and the surface of the concrete bin (2), wind is the wind speed grade information above the concrete bin (2), L is the preset average latent heat of vaporization of water particles, and P is the solar radiation power information above the concrete bin (2) during spraying;
step four; establishing a temperature field model of the concrete bin (2) according to temperature information acquired by the evaluation unit (17) through the temperature sensor (5) to obtain temperature values of all position points in the concrete bin (2), and calculating the internal and external temperature difference stress of the concrete bin (2) according to the obtained temperature values of all position points in the concrete bin (2);
step five; correcting the target temperature information according to the internal and external temperature difference stress of the concrete bin (2), re-obtaining the spray volume per minute required by the concrete bin (2) according to the corrected target temperature information, and uniformly spraying the surface of the concrete bin (2) according to the obtained spray volume per minute;
in the formula, the internal and external temperature difference stress of the concrete bin (2) is calculated, wherein sigma is the internal and external temperature difference stress, K is a preset stress relaxation coefficient caused by creep, alpha is a preset linear expansion coefficient, mu is a poisson ratio, E is a concrete elastic modulus, T (y) is a temperature value at a stress calculation point y in the temperature field model, a (epsilon) is a positive stress influence coefficient generated on the calculation point y when a pair of unit loads F (1) is added at the calculation point y (epsilon), T (epsilon) is a temperature value of the stress calculation point epsilon in the temperature field model, and delta y is an increment of the stress calculation point y in the temperature field model;
step six; firstly, temperature information and target temperature information measured by each sensor are used for establishing a corresponding temperature change process line, whether the calculated internal and external temperature difference stress of the concrete bin (2) meets the standard requirement of the poured concrete bin (2) or not is judged, when the internal and external temperature difference stress of the concrete bin (2) meets the standard requirement, the previous spray volume per minute is continuously kept, if the internal and external temperature difference stress does not meet the standard requirement, the target temperature information is corrected according to the change trend of the temperature process line corresponding to the target temperature information, the spray volume per minute required by the concrete bin (2) is obtained again according to the corrected target temperature information, the spray volume per minute is sprayed on the concrete bin (2), and the steps are repeated, so that the maintenance of the surface of the concrete bin (2) is realized.
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| CN114319248B (en) | 2024-01-23 |
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