CN117140704A - Precast beam curing shed and precast beam curing method - Google Patents
Precast beam curing shed and precast beam curing method Download PDFInfo
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- CN117140704A CN117140704A CN202311047283.0A CN202311047283A CN117140704A CN 117140704 A CN117140704 A CN 117140704A CN 202311047283 A CN202311047283 A CN 202311047283A CN 117140704 A CN117140704 A CN 117140704A
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- 238000001723 curing Methods 0.000 title abstract description 76
- 238000005507 spraying Methods 0.000 claims abstract description 75
- 239000004567 concrete Substances 0.000 claims abstract description 41
- 238000012423 maintenance Methods 0.000 claims abstract description 39
- 239000007921 spray Substances 0.000 claims abstract description 35
- 238000006703 hydration reaction Methods 0.000 claims abstract description 14
- 230000036571 hydration Effects 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000004568 cement Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000005485 electric heating Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 230000006872 improvement Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011178 precast concrete Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/247—Controlling the humidity during curing, setting or hardening
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The application discloses a precast beam curing shed, which comprises: the device comprises a shed body, a spraying device and a spraying driving component. The side wall of the shed body forms a curing space extending forwards and backwards. The spraying device is arranged in the maintenance space. The spray driving component is used for driving the shed body to move forwards and backwards. According to the precast beam curing shed, the temperature and humidity of the concrete precast beam are adjusted through the spraying device, and automatic curing of the concrete precast beam is achieved. The application also discloses a precast beam curing method, which calculates the heat insulation temperature rise value of the precast beam in the corresponding age according to the hydration heat, thereby controlling the precast beam curing shed to regulate and control the temperature and humidity and realizing the scientific curing of the concrete precast beam. The application can be applied to road and bridge engineering.
Description
Technical Field
The application relates to the technical field of curing of precast beams, in particular to a precast beam curing shed.
Background
The precast beam is formed by formwork supporting, stirring and pouring on site in a concrete member factory or a construction site, and is transported to an installation position for installation after the strength reaches the design specification. In the road and bridge engineering field, the manufacture and maintenance of precast beam components are very important links all the time, and the maintenance effect can directly influence the strength and quality of the concrete precast beam.
In the prior art, the maintenance of the precast beam realizes the temperature and humidity regulation of the precast beam through manual spraying, the real-time monitoring of the temperature and humidity of concrete cannot be carried out, and the problems of incomplete local maintenance, high maintenance energy consumption, unsatisfactory process and the like exist, so that the maintenance effect and quality of concrete members are affected. Meanwhile, the times and the time of manual spraying maintenance are random, and the low-carbon energy conservation of a maintenance station is not facilitated.
Disclosure of Invention
The application aims to provide a precast beam curing shed which solves one or more technical problems in the prior art and at least provides a beneficial choice or creation condition.
The technical scheme adopted for solving the technical problems is as follows:
a precast beam curing shed comprising: the greenhouse comprises a greenhouse body, a heating device, a spraying device and a spraying driving component;
the inner side wall of the greenhouse body forms a curing space extending back and forth, the heating device is used for improving the temperature of the curing space, the spraying device and the heating device are both arranged in the curing space and connected with the greenhouse body, and the spraying driving member is provided with a spraying driving end which is in transmission connection with the spraying device and enables the spraying driving member to move back and forth relative to the greenhouse body.
The precast beam curing shed provided by the application has at least the following beneficial effects: the canopy body can cover the precast concrete beam, realizes preventing wind rain effect, can separate a maintenance space simultaneously, conveniently spray or heat treatment to the precast concrete beam in it, satisfies the demand of curing process such as precast concrete Liang Jingting, intensification, constant temperature and cooling. The spraying driving component can drive the spraying device to move back and forth, and spray and maintain the concrete precast beam in the maintenance space. According to the precast beam curing shed, the movable spraying device is used for spraying, so that the arrangement of complex pipelines is avoided, and the automatic curing of the concrete precast beam is realized.
As a further improvement of the technical scheme, the precast beam curing shed further comprises a curing track and a movable driving member, wherein the curing track extends along the front-back direction, the shed body is covered on the upper side of the curing track and is connected with the curing track in a sliding manner, and the movable driving member is used for driving the shed body to move along the curing track. Through the technical scheme, the movable driving member can drive the shed body to move along the curing track, so that the concrete precast beam is convenient to replace or the curing position is convenient to transfer.
As a further improvement of the technical scheme, the greenhouse body is made of transparent materials, the curing rails are arranged in pairs left and right and are respectively connected with the lower ends of the left side and the right side of the greenhouse body in a sliding manner, and the length of the curing rails is not less than twice the length of the greenhouse body. Through the technical scheme, field personnel can see through the transparent canopy body clearly and know the inside maintenance condition of curing canopy. When curing treatment is carried out on one section of curing track on the shed body, the concrete precast beam can be moved and replaced on the other section of curing track, so that waiting is avoided.
As a further improvement of the technical scheme, the spraying device comprises a spraying unit and a movable frame body, wherein the spraying unit comprises a spray head connected with a high-pressure water source and a rotary driving member used for driving the spray head to rotate, the spraying unit is arranged on the movable frame body, and the spraying driving end is connected with the movable frame body. Through above-mentioned technical scheme, spray driving member can drive the removal support body and remove to can drive the shower nozzle through rotatory driving member and rotate, thereby realize carrying out diversified multi-angle's comprehensive spraying maintenance to the beam.
As a further improvement of the above technical solution, the movable frame is provided with a lifting driving member for driving the spray unit to move up and down relative to the movable frame. Through the technical scheme, the spray head can be lifted up and down, the spray area is increased, and spray treatment can be carried out on different height positions of the concrete precast beam.
As a further improvement of the technical scheme, a solar panel device is arranged at the top of the shed body, and the solar panel device comprises a solar photovoltaic panel electrically connected with the spraying device and the movable driving member. Through above-mentioned technical scheme, convert solar energy into the electric energy for precast beam curing shed use through solar photovoltaic board.
As a further improvement of the technical scheme, the solar panel device further comprises a light tracking driving device, wherein the solar photovoltaic panel is provided with a photosensitive element and is rotationally connected with the greenhouse body, and the light tracking driving device is used for driving the solar photovoltaic panel to rotate relative to the greenhouse body. Through the technical scheme, the solar battery pack automatic light tracking control device can achieve automatic light tracking control of the light tracking driving device, and power generation efficiency is improved.
As a further improvement of the technical scheme, the heating device is an electric heating fan and is communicated with the maintenance space and the outer side of the shed body.
As a further improvement of the technical scheme, the greenhouse body is provided with a plurality of temperature and humidity sensors, at least one temperature and humidity sensor is arranged on the outer side of the greenhouse body, and the rest of temperature and humidity sensors are uniformly distributed on the inner side of the greenhouse body. Through the technical scheme, the maintenance environment parameters can be perceived in real time, the situations of energy waste, low yield, high energy consumption and the like in the maintenance process are avoided, and the maintenance cost is reduced.
The application also provides a precast beam curing method applying the precast beam curing shed, which comprises the following steps:
first, placing a preform Liang Fang in the curing space;
then, calculating the heat insulation temperature rise value of the precast beam according to the hydration heat by using the age t of the precast beam, wherein the heat insulation temperature rise value is specifically calculated by adopting the following formula:
wherein T is 1 The insulation Wen Shengzhi for the precast beam at the curing age t; q is hydration heat of each kilogram of cement; c is specific heat of concrete, 960J/(kg. DEG C); ρ is the volume weight of the concrete, 2400kg/m is taken; e is a constant, 2.718 is taken; m is m c Taking 0.2 to 0.4 as an empirical coefficient; ea is the activation energy of cement hydration reaction; r is an ideal gas constant, 8.314J/(mol.K); t is the ambient temperature of the precast beam;
and then, controlling the spraying device to perform spraying treatment according to the calculated adiabatic temperature rise value.
According to the precast beam curing method provided by the application, the heat insulation temperature rise value in the precast beam curing process is calculated according to the hydration heat of the concrete, so that the scientific control of the spraying curing times and time of the concrete precast beam is realized.
Drawings
The application is further described below with reference to the drawings and examples;
FIG. 1 is a rear view of one embodiment of a precast beam curing shed provided by the present application;
FIG. 2 is a rear view of one embodiment of a precast beam curing shed provided by the present application;
FIG. 3 is a partial schematic view of one embodiment of a spray device provided by the present application;
FIG. 4 is a schematic view of a spray unit according to an embodiment of the present application;
fig. 5 is a rear view of an embodiment of a solar panel apparatus provided by the present application.
In the figure: 100. a shed body; 110. a top plate; 120. a side plate; 130. a rotating wheel; 200. a spraying device; 210. a spraying unit; 211. a spray head; 212. a first rotating electric machine; 213. a second rotating electric machine; 214. a flexible hose; 220. moving the frame body; 230. a lifting driving member; 300. a spray driving member; 400. a heating device; 500. maintaining the track; 600. a moving driving member; 700. a solar panel device; 710. a solar photovoltaic panel; 720. a light-tracking driving device; 721. a light tracking motor; 722. a driving rod; 723. a transmission link; 800. a visual operation platform; 900. and a central control box.
Detailed Description
Reference will now be made in detail to the present embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present application, but not to limit the scope of the present application.
In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
In the description of the present application, if there is a word description such as "a plurality" or the like, the meaning of a plurality is one or more, and the meaning of a plurality is two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 5, the precast beam curing shed of the present application makes the following embodiments:
a precast beam curing shed comprising: the greenhouse body 100, the heating device 400, the spraying device 200 and the spraying driving member 300.
The inside of the booth body 100 encloses a curing space extending in the front-rear direction.
The heating device 400 is used to raise the temperature in the curing space. The heating device 400 adopts an electric heating fan. The heating device 400 is disposed at the top of the curing space and fixedly connected with the shed body 100.
The spraying devices 200 are arranged on the left side and the right side of the maintenance space in pairs. The spraying devices 200 arranged in pairs are slidably connected with the shed body 100 along the front-rear direction. The spray driving member 300 is used to drive the spray device 200 to move back and forth.
In actual use, the concrete precast Liang Fang to be cured is placed in the curing space. The heating device 400 increases the temperature in the curing space; the spraying driving member 300 can drive the spraying device 200 to move back and forth to spray and maintain the concrete precast beams in the maintenance space; the static stop, the temperature rise, the constant temperature, the temperature reduction and other stages of concrete precast beam maintenance are realized.
In this embodiment, the canopy body 100 has an n-shape on a projection plane perpendicular to the front-rear direction. The booth 100 includes: a horizontally extending top plate 110, and vertically extending side plates 120 provided at both left and right sides of the top plate 110. In the curing process, the top plate 110 is disposed above the concrete precast beam, and the two side plates 120 are respectively disposed on the left and right sides of the concrete precast beam.
In order to facilitate the field personnel to clearly observe and understand the curing condition inside the curing shed, the shed body 100 is made of transparent material. The shed body 100 of the present embodiment is made of a double-layer transparent high-strength PVC plate. In other embodiments, the greenhouse body 100 may be made of acrylic plastic, acrylic board, PC board, etc.
In order to facilitate replacement of the cured concrete precast beam, in a further embodiment, the precast beam curing shed further comprises: a curing rail 500 and a moving driving member 600.
The curing rail 500 extends in the front-rear direction, and the shed body 100 is covered on the upper side of the curing rail 500 and is connected with the curing rail 500 in a front-rear sliding manner. The movable driving member 600 is provided with a movable driving end which is in transmission connection with the booth body 100 and moves the booth body 100 forward and backward along the maintenance track 500.
The maintenance rails 500 are arranged in pairs left and right, and the lower ends of the left side and the right side of the shed body 100 are respectively connected with the two maintenance rails 500 in a sliding manner back and forth. In this embodiment, the lower ends of the left and right sides of the canopy body 100 are provided with a rotating wheel 130 in rolling contact with the maintenance track 500, and the movement driving member 600 is in driving connection with the rotating wheel 130. The moving driving member 600 may employ a rotation driving element such as a servo motor, a stepping motor, or a pneumatic motor.
In some embodiments, the length of the shed body 100 is not less than the length of the concrete precast beam, and the shed body can completely cover and cover the concrete precast beam during curing. The spraying device 200 is driven to move back and forth by the spraying driving component 300 to realize maintenance. In other embodiments, the length of the canopy body 100 is less than the length of the concrete precast beam, and the moving driving member 600 and the spray driving member 300 are required to cooperate with each other, thereby achieving spray maintenance of the entire concrete precast beam.
The length of the maintenance track 500 is not less than twice the length of the booth body 100. In actual use, a plurality of concrete precast beams are arranged between two curing rails 500, and when the precast beam curing shed finishes curing one concrete precast beam, the shed body 100 is driven to move along the curing rails 500 by the moving driving member 600.
In a further embodiment, a base extending back and forth is provided between the two maintenance rails 500. The base is used for supporting and placing the concrete precast beam. The front and rear ends of the booth 100 are provided with electric roller doors. The front end and the rear end of the curing space can be sealed through the electric roller shutter door, so that the curing effect is improved.
The shower apparatus 200 includes: a shower unit 210 and a moving frame 220.
The movable frame 220 is slidably connected with the shed 100 along the front-rear direction, and the spray driving end is connected with the movable frame 220. The spraying unit 210 is disposed on the movable frame 220. The spray driving member 300 drives the movable frame 220 to move forward and backward, so that the spray unit 210 thereon can spray the precast concrete beams.
The shower unit 210 includes: a spray head 211 and a rotary drive member. The spray head 211 is connected to a high pressure water source through a valve control element. The rotation driving member is used for driving the spray head 211 to rotate.
In this embodiment, the spray head 211 is an atomizing nozzle. The rotation driving member includes a first rotary motor 212 and a second rotary motor 213. The first rotating motor 212 and the second rotating motor 213 have mutually perpendicular rotation axes, and the first rotating motor 212 and the second rotating motor 213 respectively drive the spray head 211 to rotate around the corresponding rotation axes, so that multi-directional adjustment of spraying is realized.
The spray driving member 300 is provided with a spray driving end which is in transmission connection with the movable frame 220 and moves forward and backward relative to the booth 100. In the spraying process, the movable frame 220 is driven to move back and forth by the spraying driving member 300, so that the spraying unit 210 can perform spraying maintenance on the concrete precast beam in a larger range.
The number of the spraying devices 200 may be set according to the length of the booth body 100. In the case that the booth 100 is shorter, the single spraying device 200 that moves forward and backward can also satisfy the full-length spraying maintenance. When the length of the shed body 100 is long, a plurality of spraying devices 200 can be arranged in a row, and the spraying maintenance of the concrete precast beams at different positions of each segment corresponds to the spraying maintenance.
The thickness of the prefabricated beam is generally limited, and in this embodiment, the number of the spraying units 210 in the single spraying apparatus 200 is one. The movable frame 220 is provided with a lifting driving member 230. The lifting driving member 230 is provided with a lifting driving end in driving connection with the spraying unit 210 and enables the spraying unit 210 to move up and down relative to the movable frame 220. In other embodiments, the movable frame 220 may be provided with a plurality of spraying units 210 in a vertically opposite direction.
The spray driving member 300 and the lifting driving member 230 can be linear driving members such as an air cylinder, an electric push rod, a hydraulic push rod or a screw nut driving assembly, a belt sliding rail assembly and the like.
The spray head 211 is connected with a high-pressure water source through a telescopic hose 214 and is controlled to be switched on and off through a valve control element. The flexible hose 214 can avoid tearing the tube when the sprayer 211 is moved. The flexible hose 214 may also be replaced by a hose provided in a protective tow chain.
The curing age of the concrete precast beam is longer, in order to save electric energy, the top of the shed body 100 is provided with a solar panel device 700. The solar panel apparatus 700 includes: a solar photovoltaic panel 710 and a light tracking drive 720. The solar photovoltaic panel 710 is electrically connected with the shower device 200 and the moving driving member 600. The solar photovoltaic panel 710 is provided with a photosensitive element and is rotatably connected with the shed body 100, and the light-tracking driving device 720 is provided with a light-tracking driving end which is in transmission connection with the solar photovoltaic panel 710 and enables the solar photovoltaic panel 710 to rotate relative to the shed body 100.
In this embodiment, the solar photovoltaic panel 710 has a light-tracing hole perpendicular to the solar panel surface, and a photoresistor is disposed at the bottom of the light-tracing hole. By monitoring the change of the photoresistor, the direct illumination condition of the solar photovoltaic panel 710 can be judged, so that the solar photovoltaic panel 710 can be rotated to a proper angle through the light-following driving device 720, and the illumination intensity is improved.
The light-tracking driving device 720 comprises a light-tracking motor 721, a driving rod 722 and a transmission connecting rod 723, wherein the light-tracking motor 721 is in driving connection with the driving rod 722, and two ends of the transmission connecting rod 723 are respectively in driving connection with the driving rod 722 and the solar photovoltaic panel 710. The photoelectric tracking machine 721 can drive the driving rod 722 to rotate, so that the solar photovoltaic panel 710 is driven to turn over by the transmission link 723. During actual use, the photoresistor senses light energy to drive the resistance value of the circuit to change, based on the change, the singlechip is combined to program to drive the motor to brake, so that the solar photovoltaic panel 710 is controlled to rotate by a proper light following angle, light energy tracking of the solar photovoltaic panel 710 is realized, and light energy utilization and power generation efficiency are greatly improved.
In this embodiment, the collecting module at least includes a plurality of temperature and humidity sensors. At least one temperature and humidity sensor is arranged on the outer side of the shed body 100 and used for monitoring the environmental temperature and humidity conditions of the precast beam maintenance site. The temperature and humidity sensors are uniformly distributed on the inner side of the greenhouse body 100, and the temperature and humidity conditions of different positions of the curing space are monitored. The maintenance is monitored through a plurality of temperature and humidity sensors, and a foundation is provided for intelligent regulation and control of the temperature and humidity and the start-stop time of each device.
In order to realize intelligent automatic control, the shed body 100 is provided with a visual operation platform 800 and a central control box 900. The central control box 900 is provided with a processing module. The visual operation platform 800 is electrically connected to the processing module. The processing module is electrically connected with the acquisition module, the transmission module and the control module. The acquisition module acquires and classifies instrument parameters of each sensor. And the transmission module analyzes and feeds back the data monitored by the acquisition module to the processing module. After the processing module receives the device data, the processing module decodes and analyzes a plurality of different types of parameter data through a plurality of channels of the multi-source information intelligent synchronous acquisition instrument, the different types of real-time data are classified and summarized in the acquisition system, and the data are transmitted to the internet cloud and visual operation platform 800 through wireless transmission. The control module comprises a PLC and an Internet of things gateway, wherein the PLC and the Internet of things gateway are arranged in the central control box 900. The control module can receive the instruction of the processing module and the instruction issued by the visual operation platform 800, and can realize the control of maintenance equipment through program equipment such as a PLC, an internet of things gateway and the like.
The central control box 900 may receive the working state information of each temperature and humidity sensor, the spraying device 200 and the heating device 400 on site. Through the PLC control module of the central control box 900, the data state of each temperature and humidity sensor is used as a programming IO port, a certain humidity range in the greenhouse is used as a logic limit and a start-stop triggering condition of the spraying equipment, and the functions of low-humidity start-stop and high-humidity stop of the spraying equipment are realized, so that intelligent control of the spraying equipment is achieved.
The Internet of things gateway of the control module comprises a network executor, a network controller and the like. When the sensor monitors that the temperature is too high, temperature data are collected through the network sensing layer and uploaded to the network controller through the network transmission layer, and the controller applies a wireless instruction to the network actuator to realize the closing of the electric heating fan of the controlled device; and similarly, when the temperature is too low, the electric heating fan is started to heat.
The application also provides a precast beam curing method applying the precast beam curing shed, which comprises the following steps: first, a preform Liang Fang is placed in the curing space. Then, the adiabatic temperature rise value of the precast beam is calculated according to the hydration heat at the age t of the precast beam. And then controlling the spraying device 200 to spray according to the calculated adiabatic temperature rise value.
Specifically, the concrete has an adiabatic temperature rise value of:
T (t) ＝m c *Q(1-e -mt )/cρ
wherein:
T (t) for precast beam at curing age tThe adiabatic temperature rise in units of (. Degree. C.);
m c the unit is (kg/m) of the actual dosage of concrete cement per cubic meter;
q is hydration heat of each kilogram of cement, and the unit is: j/kg;
e is a constant, 2.718 is taken;
m is an empirical coefficient, and 0.2 to 0.4 is taken;
c is specific heat of concrete, 960J/(kg. DEG C);
ρ is the volume weight of the concrete, 2400kg/m is taken.
The energy formula of combining hydration heat:
Q＝Q 0 *exp(-Ea/(R*T))
the calculation formula can be obtained:
wherein:
Q 0 the initial value of the hydration heat of the concrete is expressed as (J/kg);
ea is the activation energy of cement hydration reaction, and the unit is (J/mol);
r is an ideal gas constant, 8.314J/(mol.K);
t is the temperature of the precast beam, and the unit is (K).
When in actual use, the temperature data monitored by the temperature and humidity sensor on the inner side of the shed body is used as the temperature of the precast beam, and the control module is used for regulating and controlling each equipment unit of the precast beam curing shed according to the heat insulation temperature rise value calculated in different ages, so that scientific curing based on calculation and analysis of hydration heat of cement in different ages is realized.
If the calculated insulation Wen Shengzhi T (t) If the temperature is higher, the concrete precast beam is subjected to cooling treatment; in contrast, if the calculated insulation Wen Shengzhi T (t) And if the temperature is lower, controlling the heating device to heat, so as to realize intelligent maintenance.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described, various changes, modifications, substitutions and alterations can be made by those skilled in the art without departing from the principles and spirit of the application, and such changes, modifications, equivalents and substitutions are intended to be included within the scope of the application as defined by the claims and their equivalents.
Claims (10)
1. A precast beam curing shed which is characterized in that: comprising the following steps: the greenhouse comprises a greenhouse body, a heating device, a spraying device and a spraying driving component;
the inner side wall of the greenhouse body forms a curing space extending back and forth, the heating device is used for improving the temperature of the curing space, the spraying device and the heating device are both arranged in the curing space and connected with the greenhouse body, and the spraying driving member is provided with a spraying driving end which is in transmission connection with the spraying device and enables the spraying driving member to move back and forth relative to the greenhouse body.
2. The precast beam curing shed as in claim 1, wherein: the movable greenhouse also comprises a curing track and a movable driving member, wherein the curing track extends along the front-back direction, the greenhouse body is covered on the upper side of the curing track and is connected with the curing track in a sliding manner, and the movable driving member is used for driving the greenhouse body to move along the curing track.
3. The precast beam curing shed as in claim 2, wherein: the canopy body is transparent material goods, the maintenance track is control to set up in pairs and respectively with the lower extreme of canopy body left and right sides slides and is connected, the length of maintenance track is not less than the twice of canopy body length.
4. The precast beam curing shed as in claim 1, wherein: the spraying device comprises a spraying unit and a movable frame body, wherein the spraying unit comprises a spray head connected with a high-pressure water source and a rotary driving member used for driving the spray head to rotate, the spraying unit is arranged on the movable frame body, and the spraying driving end is connected with the movable frame body.
5. The precast beam curing shed as in claim 4, wherein: the movable frame body is provided with a lifting driving component for driving the spraying unit to move up and down relative to the movable frame body.
6. The precast beam curing shed as in claim 1, wherein: the top of the shed body is provided with a solar panel device, and the solar panel device comprises a solar photovoltaic panel electrically connected with the spraying device and the movable driving member.
7. The precast beam curing shed as in claim 6, wherein: the solar panel device further comprises a light tracking driving device, wherein the solar photovoltaic panel is provided with a photosensitive element and is rotationally connected with the greenhouse body, and the light tracking driving device is used for driving the solar photovoltaic panel to rotate relative to the greenhouse body.
8. The precast beam curing shed as in claim 1, wherein: the heating device is an electric heating fan and is communicated with the maintenance space and the outer side of the shed body.
9. A precast beam curing shed as in any one of claims 1 to 8, wherein: the greenhouse body is provided with a plurality of temperature and humidity sensors, at least one temperature and humidity sensor is arranged on the outer side of the greenhouse body, and the rest of temperature and humidity sensors are uniformly distributed on the inner side of the greenhouse body.
10. A method for curing a precast beam using the precast beam curing shed as claimed in claim 9, characterized in that: the method comprises the following steps:
first, placing a preform Liang Fang in the curing space;
then, calculating the heat insulation temperature rise value of the precast beam at the age t according to the hydration heat, wherein the following formula is specifically adopted:
wherein T is (t) The insulation Wen Shengzhi for the precast beam at the curing age t; m is m c The actual consumption of concrete cement per cubic meter; q (Q) 0 Hydration heat per kilogram of cement; e is a constant, 2.718 is taken; m is an empirical coefficient, and 0.2 to 0.4 is taken; ea is the activation energy of cement hydration reaction; r is an ideal gas constant, 8.314J/(mol.K); t is the ambient temperature of the precast beam; c is specific heat of concrete, and 960J/kg DEG C is taken; ρ is the volume weight of the concrete, 2400kg/m is taken;
and then, controlling the spraying device to perform spraying treatment according to the calculated adiabatic temperature rise value.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117863332A (en) * | 2024-02-29 | 2024-04-12 | 中交一公局集团有限公司 | Intelligent spray maintenance system of precast beam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117863332A (en) * | 2024-02-29 | 2024-04-12 | 中交一公局集团有限公司 | Intelligent spray maintenance system of precast beam |
| CN117863332B (en) * | 2024-02-29 | 2024-06-07 | 中交一公局集团有限公司 | Intelligent spray maintenance system of precast beam |
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