CN110206314A - Concrete heat dissipation PVC pipe laying structure and concrete pouring construction method - Google Patents
Concrete heat dissipation PVC pipe laying structure and concrete pouring construction method Download PDFInfo
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- CN110206314A CN110206314A CN201910435748.7A CN201910435748A CN110206314A CN 110206314 A CN110206314 A CN 110206314A CN 201910435748 A CN201910435748 A CN 201910435748A CN 110206314 A CN110206314 A CN 110206314A
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- 238000010276 construction Methods 0.000 title claims abstract description 32
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 16
- 239000000498 cooling water Substances 0.000 claims abstract description 70
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 67
- 238000000034 method Methods 0.000 claims description 15
- 230000002787 reinforcement Effects 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 13
- 238000005259 measurement Methods 0.000 description 8
- 239000004568 cement Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000035882 stress Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000009429 distress Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- 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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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a concrete heat dissipation PVC pipe laying structure and a concrete pouring construction method. The cooling water channel comprises more than one layer of cooling water channel fixed on a steel bar framework, the cooling water channel comprises more than one PVC pipe (1) which are arranged in parallel, the PVC pipes (1) are sequentially connected end to end through a communicating pipe (2), and the PVC pipes (1) of two adjacent layers of cooling water channels are arranged in a transverse and longitudinal staggered manner; the distance T between adjacent PVC pipes (1) in the cooling water channel of the odd number layerMagic card= 1.75-1.77 m, and the distance T between adjacent PVC pipes (1) in the cooling water channel of the even number layerDoll= 1.44-1.46 m, and the distance T between two adjacent layers of cooling water channelsVerticalAnd = 1.0-1.2 m. The invention has the characteristics of convenient transportation, low cost and easy installation.
Description
Technical field
The present invention relates to concrete construction field, especially a kind of concrete heat dissipation pvc pipe laying structure and concrete are poured
Build construction method.
Background technique
With concrete structure gradually to it is towering, greatly develop across, enlarged direction, the construction environment item of mass concrete
Part, such as temperature, sunshine, rainwater, strong wind, to be mass concrete construction and quality control more stringent requirements are proposed；
The internal temperature control of mass concrete (such as bridge bearing platform) and the prevention in structural body crack are always engineering circles extremes
Pay attention to, but still makes us feeling very intractable problem so far.At present in casting of concrete in mass construction, it is often used steel pipe work
For cooling water pipe, the heat generated when being passed through cooling medium (generally water) later for concreting is taken away.But this method
There are following disadvantages: steel pipe price is higher, and transport is inconvenient, installation is more difficult, is unfavorable for the saving and construction efficiency of cost
It improves.
Summary of the invention
The object of the present invention is to provide a kind of concrete heat dissipation pvc pipe laying structure and concrete pouring construction methods.
The present invention has convenient transportation, low cost, installs easy feature.
Technical solution of the present invention: a kind of concrete radiates pvc pipe laying structure, including be fixed on framework of steel reinforcement one
Layer or more cooling-water duct, cooling-water duct includes one or more pvc pipe arranged in parallel, through communicating pipe between pvc pipe
It is sequentially connected end to end, the pvc pipe transverse and longitudinal of adjacent two layers cooling-water duct is staggered；In cooling-water duct in odd-level
Spacing T between adjacent pvc pipeIt is odd=1.75~1.77m, the spacing T between adjacent pvc pipe in the cooling-water duct in even levelIt is even
=1.44~1.46m, the spacing T between adjacent two layers cooling-water ductIt is perpendicular=1.0~1.2m.
In concrete above-mentioned heat dissipation pvc pipe laying structure, cooling-water duct described in every layer include two groups of water inlets and
Water outlet, the water inlet is in the medium position at framework of steel reinforcement edge, and water outlet is in the corner location of framework of steel reinforcement；Every group
By one or more be parallel to each other and head and the tail successively by the pvc pipe connection of communicating pipe connection between inlet and outlet.
In concrete heat dissipation pvc pipe laying structure above-mentioned, pvc pipe and connection between every group of inlet and outlet
The overall length of pipe is no more than 200m.
In concrete heat dissipation pvc pipe laying structure above-mentioned, pvc pipe and concrete side walls and/or table in outermost
The distance in face is 0.6~1.4m.
In concrete above-mentioned heat dissipation pvc pipe laying structure, the pvc pipe, be outer diameter be 40mm, thickness of pipe wall 2mm
Pvc pipe.
The method for carrying out concrete pouring construction using concrete above-mentioned heat dissipation pvc pipe laying structure, in the steps below
It carries out:
A. cooling-water duct is successively fixed on framework of steel reinforcement, and water test is carried out to every layer of cooling-water duct；
B. after the completion of water test, concreting is carried out；
C. after the completion of concreting, it is passed through cooling water to cooling-water duct by carrying out water inlet, and shape is exported by water outlet
It is recycled at water, is recycled by water and take away the heat that concreting generates.
In aforementioned step c, when each layer concrete temperature rise arrival Wen Fenghou, the temperature uniform decrease in temperature of inside concrete be not anti-
Bullet, concrete internal-external temperature difference less than 25 DEG C when, water flowing can be stopped and enter cooling water.
In aforementioned step c, when concrete temperature rise reaches Wen Fengqian, the temperature difference≤5 DEG C of inlet and outlet；Reach temperature
Behind peak, the temperature difference≤10 DEG C of inlet and outlet；In the step c, when concrete temperature rise reaches Wen Fengqian, cooling water is logical
Flow in road is 3~5m3/h, and when concrete temperature rise reaches Wen Fenghou, flow is 1~3m3/h.
In aforementioned step c, the cooling water temperature is 10~30 DEG C.
In aforementioned step b, when concreting, environment temperature≤23 DEG C.
The utility model has the advantages that compared with prior art, the present invention uses pvc pipe to substitute traditional steel pipe as cooling-water duct；
Because pvc pipe transport is more convenient, price is low (for opposite steel pipe, every meter probably cheap 20~30 yuan), it is easier to which installation is applied
Work, so it can be effectively reduced construction cost and construction efficiency.
The present invention is emulated by abqus technical modelling, analyzes heat transfer and temperature of the pvc pipe inside mass concrete
, at the same by engineering investigate, using laboratory test, development in laboratory development, field engineering apply with site technology instruct etc.
Technological means, selective analysis simultaneously solve internal using the mass concrete (i.e. bridge bearing platform) after pvc pipe substitution conventional steel
Thermal conductivity law and performance influence, and finally obtain to draw a conclusion:
1. the volume of cooling water pipe is far smaller than concrete, is replaced with PVC pipe since cushion cap primary concreting accumulation heat is higher
Can almost it ignore for steel pipe as the influence after cooling water pipe to concrete central temperature；
2. biggish cooling water flow can be effectively reduced the maximum temperature of concrete before concrete reaches maximum temperature, but
It is that biggish cooling water flow is smaller on the cooling effect influence after maximum temperature.Comprehensive study is considered, pvc pipe of the invention
Cooling water flow optimum range are as follows: Wen Fengqian 3~5m3/h, Wen Fenghou, 1~3m3/h；
3. reducing the warm peak value that cooling water temperature advantageously reduces concrete, suitable coolant water temperature is 10~30 DEG C, optimal to be
15℃。
4. the layout density for suitably increasing cooling water pipe is conducive to control the central temperature of concrete, and improves cooling water pipe
Caliber then to cooling effect act on less, be based on this, obtain the arragement construction of pvc pipe are as follows: by adjacent two layers cooling-water duct
Pvc pipe transverse and longitudinal be staggered；Spacing T between adjacent pvc pipe in cooling-water duct in odd-level simultaneouslyIt is odd=1.75~
1.77m, the spacing T between adjacent pvc pipe in the cooling-water duct in even levelIt is even=1.44~1.46m, adjacent two layers are cooling
Spacing T between aquaporinIt is perpendicular=1.0~1.2m；In addition to this, further define pvc pipe outer diameter be 40mm, thickness of pipe wall 2mm；By this
Arragement construction can enable cooling water uniformly flow in inside concrete, so that the heat of inside concrete is more evenly distributed,
The temperature gradient for reducing inside concrete, to reduce temperature stress.
5. influence of the mould material for the central temperature of concrete is little, when using steel form, heat preservation should be enhanced and arranged
It applies, such as increase insulation layer thickness or extends soaking time, to reduce concrete internal temperature gradient to reduce temperature stress.
6. temperature of concrete during construction influences mass concrete center maximum temperature significantly, to control placing temperature to drop
Low concrete center maximum temperature, placing temperature preferably≤23 DEG C.
Cooling-water duct described in every layer is included also two groups of inlet and outlet by the present invention, and the water inlet is in steel
The medium position at tendons skeleton edge, water outlet is in the corner location of framework of steel reinforcement；The structure makes cooling water enter concrete
When internal, entered first by concrete center, is gradually spread later to concrete periphery；With this configuration, so that cooling water energy
Enough amount of heat for more effectively taking away the aggregation of concrete center, quickly reduce concrete central temperature；The structure is relatively conventional
Steel pipe, it is more convenient to construct, and constructions cost is lower；In addition to this, which also can be such that the temperature of cooling water is risen, in this way when
When cooling water gradually flows to the periphery, it is unlikely to quickly reduce the temperature of periphery；In this way, just effectively reducing coagulation
The temperature difference of native central temperature and peripheral temperature has to reduce concrete internal temperature gradient to reduce temperature stress
Effect prevents concrete cracking.In addition, the present invention can further decrease temperature stress by the temperature difference of control entery and delivery port,
Effectively prevent concrete cracking.
In conclusion the present invention has convenient transportation, low cost, easy feature is installed.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is top view of the invention；
Fig. 3 is the schematic diagram in the direction A of Fig. 2；
Fig. 4 is construction embodiment of the present invention.
The label in accompanying drawing is: 1-PVC is managed, and 2- communicating pipe, 3- water inlet, 4- water outlet.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment 1.A kind of concrete radiates pvc pipe laying structure, constitutes as shown in Figure 1-3, include being fixed on reinforcing bar
One layer or more of cooling-water duct on skeleton, cooling-water duct include one or more pvc pipe 1 arranged in parallel, pvc pipe
It is sequentially connected end to end between 1 through communicating pipe 2,1 transverse and longitudinal of pvc pipe of adjacent two layers cooling-water duct is staggered；In odd-level
The spacing T between adjacent pvc pipe 1 in cooling-water ductIt is odd=1.75~1.77m (optimal to take 1.76m), the cooling in even level
The spacing T between adjacent pvc pipe 1 in aquaporinIt is even=1.44~1.46 m (optimal to take 1.45m), adjacent two layers cooling-water duct
Between spacing TIt is perpendicular=1.0~1.2 m (optimal to take 1.1m).The number of plies is arranged in pvc pipe, according to depending on practice of construction demand.
Specifically, cooling-water duct described in every layer includes two groups of water inlets 3 and water outlet 4, and the water inlet 3 is in steel
The medium position at tendons skeleton edge, water outlet 4 are in the corner location of framework of steel reinforcement；Pass through between every group of water inlet 3 and water outlet 4
One or more pvc pipe 1 that is being parallel to each other and successively being connected from beginning to end by communicating pipe 2 is connected to.
Specifically, the pvc pipe 1 between every group of water inlet 3 and water outlet 4 and the overall length of communicating pipe 2 are no more than 200m.
Specifically, the pvc pipe 1 in outermost is 0.6~1.4m at a distance from concrete side walls and/or surface.At this point,
Concrete does not pour, and concrete side walls/surface and template inner wall are equivalent when measurement.
Specifically, pvc pipe 1 above-mentioned is the pvc pipe 1 that outer diameter is 40mm, thickness of pipe wall is 2mm.
The method for carrying out concrete pouring construction using concrete above-mentioned heat dissipation pvc pipe laying structure, in the steps below
It carries out:
A. cooling-water duct is successively fixed on framework of steel reinforcement, and water test is carried out to every layer of cooling-water duct；It is fixed
Afterwards, construction personnel is forbidden to trample pvc pipe
B. it after the completion of water test, carries out concreting, vibrate；During concrete pouring construction, it is straight that concrete should be avoided
It connects and falls on cooling water pipe；
C. after the completion of concreting, it is passed through cooling water to cooling-water duct by carrying out water inlet 3, and exported by water outlet 4
Water circulation is formed, is recycled by water and takes away the heat that concreting generates, temperature difference between inside and outside concrete is regulated and controled with this.
Specifically, in aforementioned step c, when each layer concrete temperature rise arrival Wen Fenghou, the temperature of inside concrete are uniform
When cooling does not rebound, the internal-external temperature difference of concrete is less than 25 DEG C, water flowing can be stopped and enter cooling water.Herein, to inside concrete
The monitoring of temperature can be monitored by temperature control inductor pre-buried before concreting.It is required during temperature monitoring as follows:
1. pour temperature field measurement: in pour concreting process, every 2h measures a temperature；Pour block concrete
To the heat of hydration temperature rise period after pouring, every 2h measurement is primary；Heat of hydration temperature-fall period first week, every 4h measurement was primary,
The selection temperature typical change period measures daily after a week, measures 2~4 times daily.
2. atmospheric temperature measurement: with concrete temperature simultaneous observation.
It is carried out 3. the measurement of water flowing cooling procedure temperature is synchronous with pour temperature field measurement process.
4. in special circumstances, as during heavy rainfall or high temperature, appropriate intensive measurement number.
After 5. concrete members all pour, according to temperature field and the results of prediction and calculation of stress field, in conjunction with prison
The comparative analysis of result is surveyed, determines and terminates time of measuring.
6. filling in temperature monitoring record sheet in time after the completion of observation every time.
After the completion of concreting, also need to conserve concrete.Maintenance is Mass Concrete
Critical task, the purpose of maintenance are to maintain suitable temperature and humidity, control temperature difference between inside and outside concrete and cooling rate, promote
The normal development of concrete strength and the generation for preventing harmful cracks.To guarantee maintenance quality, tide can be carried out to concrete surface
Wet curing.Temperature control measure should be also taken according to weather conditions, and measures concrete surface and internal temperature after pouring as needed,
By temperature control within a certain range.The temperature difference should be controlled in the range of 25 DEG C and be kept the temperature by the present invention, be to keep mixed
Solidifying soil surface temperature is unlikely too fast lost, reduces the temperature gradient of concrete surface, prevents surface crack, also can sufficiently send out
Wave the potentiality of concrete and the slackness of material.Tensile stress caused by the average total temperature difference of concrete is set to be less than the anti-of concrete
Tensile strength prevents through crack.The effect of heat preservation is to make still in concrete strength developing stage, and moist condition can prevent
The phenomenon that concrete surface is dehydrated and generates desciccation crack, can also be such that the aquation of cement goes on smoothly, improve the limit of concrete
Tensile strength.To mass concrete face, layer of plastic film also generally is covered in concrete surface, moisturizing is carried out to concrete
Maintenance, to prevent the too fast generation drying shrinkage seam of water point evaporation.The piece of sack can also be covered on a plastic film according to temperature conditions, carried out
Insulated curing.The temperature difference is too small, or when cooling is unfavorable, can be used with water saturates insulating layer, increase the method for thermal coefficient, control temperature
Difference and cooling rate.Curing time is generally no less than 14 days for prevention of mass concrete.
Specifically, lower-layer concrete temperature recovery after the concreting of upper layer can also adopt prevention of mass concrete in order to prevent
Take secondary water flowing cooling (i.e. water flowing cooling uses second of water flowing in the case where not being able to satisfy temperature difference requirement), the water flowing time
Depending on temperature-measuring results, the secondary water flowing rate that cools is not greater than 1.5 DEG C/d.After the completion of cooling-water duct use,
It should be blocked using with grade cement slurry or mortar.
Specifically, in aforementioned step c, when concrete temperature rise reaches Wen Fengqian, the temperature difference≤5 of water inlet 3 and water outlet 4
℃；Reach Wen Fenghou, the temperature difference≤10 DEG C of water inlet 3 and water outlet 4, this measure is in order to ensure mass concrete inside is uniform
Cooling；In the step c, when concrete temperature rise reaches Wen Fengqian, the flow in cooling-water duct is 3~5m3/h, works as coagulation
Soil temperature liter reaches Wen Fenghou, and flow is 1~3m3/h.
Specifically, in aforementioned step c, the cooling water temperature is 10~30 DEG C, most preferably 15 DEG C；Pass through the temperature
Parameter can advantageously reduce the warm peak value of concrete；In addition to this, cooling water temperature control is lower than concrete central temperature
15~25 DEG C；When internal-external temperature difference is higher, water flowing flow can be increased, reduce inflow temperature (such as on the rocks) to reinforce internal drop
Temperature.
Specifically, in aforementioned step b, when concreting, environment temperature≤23 DEG C.Temperature of concrete during construction (environment
Temperature) mass concrete center maximum temperature is influenced significantly, placing temperature should to be controlled to reduce the concrete center highest temperature
Degree, herein, placing temperature preferably≤23 DEG C.The placing temperature of concrete is controlled to control distress in concrete for mass concrete
It is extremely important.Placing temperature is mainly influenced by raw material temperature, temperature etc..Before concreting, can by measurement cement,
The temperature of flyash, miberal powder, sand, stone, water considers environment temperature to estimate placing temperature.Because the temperature of sand, stone, water is bullied
Temperature influences, and in the case where glue material temperature is certain, temperature of concrete during construction depends primarily on environment temperature, therefore selects suitably
It is important that time carries out concreting.Such as, the cushion cap concreting time is expected to be July, adopts for control placing temperature
Take following measure:
1. cement temperatures control≤50 DEG C；Cement should be placed to after being fully cooled and be used, and the new cement just to have dispatched from the factory is forbidden to use, can
Using the cooling glue material of the modes such as library；
2. raw material cool down.Sand material should be placed in shady place, be exposed to the sun to avoid sand material.When temperature is higher than placing temperature,
It should accelerate to transport and enter mould speed, reduce temperature recovery of the concrete in transport and casting process, concrete delivery pipe external application
Straw bag sunshade, and often sprinkle water.
3. when placing temperature is more than 23 DEG C, the measure on the rocks of Ying Caiyong mixing water.
4. if it cannot be guaranteed that placing temperature be less than or equal to 23 DEG C, should stop daytime construction be changed to carry on construction work at night.
Using method of the invention, have successfully completed to the left width cushion cap concreting of No. 5 piers of peak forest grand bridge, it should
In construction embodiment, it is provided with 6 layers of pvc pipe 1 altogether.As shown in figure 4, wherein concrete parts are to be poured using method of the invention
It builds.
Claims (10)
- The pvc pipe laying structure 1. a kind of concrete radiates, it is characterised in that: including be fixed on framework of steel reinforcement one layer or more Cooling-water duct, cooling-water duct include one or more pvc pipe arranged in parallel (1), through communicating pipe (2) between pvc pipe (1) It is sequentially connected end to end, pvc pipe (1) transverse and longitudinal of adjacent two layers cooling-water duct is staggered；Cooling-water duct in odd-level In adjacent pvc pipe (1) between spacing TIt is odd=1.75~1.77m, the adjacent pvc pipe (1) in the cooling-water duct in even level Between spacing TIt is even=1.44~1.46m, the spacing T between adjacent two layers cooling-water ductIt is perpendicular=1.0~1.2m.
- The pvc pipe laying structure 2. concrete according to claim 1 radiates, it is characterised in that: cooling water described in every layer Channel includes two groups of water inlets (3) and water outlet (4), and the water inlet (3) is in the medium position at framework of steel reinforcement edge, is discharged Mouth (4) is in the corner location of framework of steel reinforcement；Between every group of water inlet (3) and water outlet (4) by one or more it is being parallel to each other, And head and the tail are successively connected to by the pvc pipe (1) of communicating pipe (2) connection.
- The pvc pipe laying structure 3. concrete according to claim 2 radiates, it is characterised in that: be in every group of water inlet (3) Pvc pipe (1) and the overall length of communicating pipe (2) between water outlet (4) are no more than 200m.
- The pvc pipe laying structure 4. concrete according to claim 1 or 2 radiates, it is characterised in that: in outermost Pvc pipe (1) is 0.6~1.4m at a distance from concrete side walls and/or surface.
- The pvc pipe laying structure 5. concrete according to claim 1 or 2 radiates, it is characterised in that: the pvc pipe (1), it is outer diameter is 40mm, thickness of pipe wall is 2mm pvc pipe (1).
- 6. a kind of carry out concreting using concrete as described in any one in claim 1-5 heat dissipation pvc pipe laying structure The method of construction, which is characterized in that carry out in the steps below:A. cooling-water duct is successively fixed on framework of steel reinforcement, and water test is carried out to every layer of cooling-water duct；B. after the completion of water test, concreting is carried out；C. after the completion of concreting, it is passed through cooling water to cooling-water duct by carrying out water inlet (3), and by water outlet (4) Output forms water circulation, is recycled by water and takes away the heat that concreting generates.
- 7. the method that concrete heat dissipation pvc pipe laying structure according to claim 6 carries out concrete pouring construction, special Sign is, in the step c, when each layer concrete temperature rise arrival Wen Fenghou, the temperature uniform decrease in temperature of inside concrete be not anti- Bullet, concrete internal-external temperature difference less than 25 DEG C when, water flowing can be stopped and enter cooling water.
- 8. the method that concrete heat dissipation pvc pipe laying structure according to claim 6 carries out concrete pouring construction, special Sign is, in the step c, when concrete temperature rise reaches Wen Fengqian, the temperature difference≤5 DEG C of water inlet (3) and water outlet (4)； Reach Wen Fenghou, the temperature difference≤10 DEG C of water inlet (3) and water outlet (4)；In the step c, when concrete temperature rise reaches temperature Before peak, the flow in cooling-water duct is 3~5m3/h, and when concrete temperature rise reaches Wen Fenghou, flow is 1~3m3/h.
- 9. the method that concrete heat dissipation pvc pipe laying structure according to claim 6 carries out concrete pouring construction, special Sign is, in the step c, the cooling water temperature is 10~30 DEG C.
- 10. the method that concrete heat dissipation pvc pipe laying structure according to claim 6 carries out concrete pouring construction, It is characterized in that, in the step b, when concreting, environment temperature≤23 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021478A (en) * | 2019-12-13 | 2020-04-17 | 诚通凯胜生态建设有限公司 | Construction method of concrete structure |
| CN112065631A (en) * | 2020-08-17 | 2020-12-11 | 安徽金寨抽水蓄能有限公司 | Volute layer construction process |
| CN112095472A (en) * | 2020-09-10 | 2020-12-18 | 黑龙江八一农垦大学 | Large-volume concrete pier cooling system based on tie bar hole is recycled |
| CN112174693A (en) * | 2020-10-15 | 2021-01-05 | 长江三峡集团福建能源投资有限公司 | Temperature control cooling equipment and method for offshore wind power large-volume concrete |
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| CN112174693A (en) * | 2020-10-15 | 2021-01-05 | 长江三峡集团福建能源投资有限公司 | Temperature control cooling equipment and method for offshore wind power large-volume concrete |
| CN112174693B (en) * | 2020-10-15 | 2024-01-26 | 长江三峡集团福建能源投资有限公司 | Temperature control cooling equipment and method for offshore wind power mass concrete |
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