CN107310045A - A kind of totally-enclosed ground heating heat insulation formula concrete plant - Google Patents
A kind of totally-enclosed ground heating heat insulation formula concrete plant Download PDFInfo
- Publication number
- CN107310045A CN107310045A CN201710552421.9A CN201710552421A CN107310045A CN 107310045 A CN107310045 A CN 107310045A CN 201710552421 A CN201710552421 A CN 201710552421A CN 107310045 A CN107310045 A CN 107310045A
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- CN
- China
- Prior art keywords
- feed bin
- totally
- boiler
- heat insulation
- canopy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
- B28C7/0023—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust by heating or cooling
- B28C7/003—Heating, e.g. using steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0046—Storage or weighing apparatus for supplying ingredients
- B28C7/0053—Storage containers, e.g. hoppers, silos, bins
- B28C7/0076—Parts or details thereof, e.g. opening, closing or unloading means
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Building Environments (AREA)
- Floor Finish (AREA)
Abstract
The invention discloses a kind of totally-enclosed ground heating heat insulation formula concrete plant, including totally enclosed feed bin canopy, mixing station and the heating system in feed bin canopy, mixing station includes the proportioning machine being arranged in feed bin canopy, and proportioning machine has heater；Several sandstone feed bins are provided with feed bin canopy, at least one of which sandstone feed bin orlop offers floor heating groove, heat supply pipeline is equipped with the floor heating groove, and steel deck-plate is covered with the floor heating groove；Heating system includes boiler, and boiler is connected by the first outlet pipe with the water inlet of heat supply pipeline, and boiler is connected by the second outlet pipe with the water inlet of heater.The present invention, to sand material heating and thermal insulation, had both met the construction demand under cold snap by hot-water line, it is not required that whole feed bin canopy heat supply is incubated, cost is saved, has evaded the potential safety hazard that traditional feed bin canopy is also easy to produce fire using burner；Using the feed bin canopy of full-closed structure, it is to avoid dust is boundless, the phenomenon of mud completely, is conducive to civilized construction.
Description
Technical field
The present invention relates to architectural engineering winter construction field, and in particular to a kind of totally-enclosed ground heating heat insulation formula concreter
Factory.
Background technology
When carrying out site construction, the construction material such as mortar is all to be stirred mixing at the scene, and the mix of mortar is needed
To consider the condition such as the temperature at scene and the water temperature of mixing water.
According to existing construction technology, when being constructed under conditions of subzero 30 DEG C -40 DEG C, if it cannot be guaranteed that concrete goes out
Machine, molding temperature, concrete will be unable to construction；If constructed in the north, then the feed bin canopy of conventional design can not also expire
Foot north high wind, the construction requirement of heavy snowfall.
In addition, common concrete plant is generally local covering, the air storage such as sand, building stones, or build steel structure canopy
Frame, as the facility that keeps off the rain, so easily causes that dust is boundless, the phenomenon of mud completely occurs.
The content of the invention
For defect present in prior art, it is an object of the invention to provide a kind of totally-enclosed ground heating heat insulation formula coagulation
Geotechnological factory, by disposing floor heating heating system in feed bin canopy, there is provided suitable mix temperature, it is ensured that construction is smoothed out.
To achieve the above objectives, the present invention is adopted the technical scheme that：A kind of totally-enclosed ground heating heat insulation formula concrete plant,
It includes：
Several sandstone feed bins, sand material described at least one of which are provided with the feed bin canopy of closing, the feed bin canopy
Storehouse orlop offers floor heating groove, and heat supply pipeline is equipped with the floor heating groove, and steel is covered with the floor heating groove
Cover plate；
Mixing station, it includes the proportioning machine being installed in the feed bin canopy, and the proportioning machine has heater；
Heating system, it includes boiler, and the boiler is connected by the first outlet pipe with the water inlet of the heat supply pipeline,
The boiler is connected by the second outlet pipe with the water inlet of the heater.
Preferably, the boiler is connected by the first return pipe with the delivery port of the heat supply pipeline, and the boiler passes through
Second return pipe is connected with the delivery port of the heater.
Preferably, the S-type arrangement of the heat supply pipeline.
Preferably, some supports are provided with the floor heating groove, the heat supply pipeline is carried on the support.
Preferably, insulation reflecting layer is equipped with the floor heating groove.
Preferably, it is provided with by the boiler in mix water tank, the mix water tank and is provided with heating water tanks pipe, institute
The two ends for stating heating water tanks pipe pass the mix water tank and are connected with the boiler.
Preferably, the mixing station also includes：
Stirring host, the stirring host is connected by belt feeder with the proportioning machine；
Powder tank, the powder tank is connected by screw machine with the stirring host；
The stirring host, the belt feeder and the screw machine are enclosed with glass fibre cotton color steel.
Preferably, the stirring host and the belt motor spindle are respectively connected with steel pipe column, and each steel pipe column is fixed
In underground.
Preferably, the feed bin canopy gusset is enclosed provided with rock wool color plate, and the feed bin ceiling portion is equipped with glass fibre cotton
Color steel.
Preferably, the feed bin ceiling portion is arranged at intervals with some transparent color steels.
Compared with prior art, the advantage of the invention is that：
(1) heating and thermal insulation is carried out to the sand material in sandstone feed bin by hot-water line, that is, meets the use under cold snap
Material demand, it is not required that heat supply insulation is carried out to whole feed bin canopy, cost is saved；Heating and thermal insulation is carried out with heat supply pipeline, is advised
The potential safety hazard that traditional feed bin canopy is also easy to produce fire using burner has been kept away, has also evaded the generation of CO poisonings, it is ensured that sand
The safety of building stones and the person, using the feed bin canopy of full-closed structure, it is to avoid dust is boundless, the phenomenon of mud completely, is conducive to
Civilized construction.
(2) by setting the first return pipe and the second return pipe, the water in heat supply pipeline and heater is made to return to pot respectively
In stove, a circulatory system is formed, the purpose of cycling use of water, saving water resource has been reached.
(3) stirring host and belt feeder are fixed on underground by steel pipe column, are mixed using this steel pipe pile foundation is more conventional
Solidifying earth foundation, with the advantage that inserting piling is convenient, applied widely, safe and reliable, after the completion of construction, steel-pipe pile can be pulled out back
Receive and utilize, will not damage to land, be conducive to reclaiming for soil, steel-pipe pile can use circulation material, the extra throwing without increasing
Enter.
(4) insulation material, high insulating effect, more conventional bubble are used as using rock wool color plate and glass fibre cotton color steel
Foam color steel has good flame resistance, the low advantage of safe, thermal conductivity factor.Feed bin ceiling portion is arranged at intervals transparent color steel,
Daylighting effect is good, need not use power lighting daytime, saves the energy.
Brief description of the drawings
Fig. 1 is the totally-enclosed ground heating heat insulation formula concrete plant top view of kind provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Shown in Figure 1, the embodiment of the present invention provides a kind of totally-enclosed ground heating heat insulation formula concrete plant, and it includes：
Several sandstone feed bins 10, sand described at least one of which are provided with the feed bin canopy 1 of closing, the feed bin canopy 1
The orlop of building stones storehouse 10 offers floor heating groove, when sand material is needed to use, and orlop can not had to the material of the floor heating groove
Sand material in storehouse is transferred in sandstone feed bin 10 of the orlop provided with the floor heating groove, can save construction cost, the institute
State and heat supply pipeline 11 is equipped with floor heating groove, be covered with steel deck-plate on the floor heating groove, closed, with this to sandstone
Material carries out heating and thermal insulation；
Mixing station 2, it includes the proportioning machine 20 being installed in the feed bin canopy 1, and the proportioning machine 20 has heater；By
It is generally mounted in the proportioning machine 20 near the canopy wall of the feed bin canopy 1, is easily influenceed and turned cold by extraneous low temperature, therefore set
The heater is put, the heater can use homemade hot water heat-conducting heater, make sand material in storage Sha Cang with
Expect that carrying out second to sand in metering process heats up；
Heating system 3, it includes boiler 30, in addition, heating system also includes boiler room, the boiler 30 is placed in boiler
In room, water is heated with coal, chimney is had at the top of boiler room, coal smoke is discharged outside the feed bin canopy 1 by chimney, the pot
Pressure gauge and thermometer are installed on stove 30, monitors set on hydraulic pressure and water temperature in the boiler 30, the boiler 30 at any time
Have and be provided with water supply tank by atmospheric communicating pipe, the boiler 30, moisturizing can be carried out at any time when water shortage in the boiler 30
Process, water supply tank bottom and the bottom of the boiler 30 are equipped with blow-off line and blowoff valve, and water supply tank is provided with overflow pipe, water-level gauge
And filling pipe, filling pipe connects with the boiler 30；The boiler 30 passes through the first outlet pipe 31 and the heat supply pipeline 11
Water inlet is connected, and the boiler 30 is connected by the second outlet pipe 32 with the water inlet of the heater.
Heating and thermal insulation is carried out to the sand material in the sandstone feed bin 10 by the hot water in the boiler 30, both met
Materials demand under cold snap, it is not required that heat supply insulation is carried out to the whole feed bin canopy 1, cost is saved；Pass through peace
The boiler 30 is filled, heating and thermal insulation is carried out by the heat supply pipeline 11, has evaded traditional feed bin canopy and has been also easy to produce using burner
The potential safety hazard of fire, has also evaded the generation of CO poisonings, it is ensured that the safety of sand material and the person, using full-closed structure
The feed bin canopy 1, it is to avoid dust is boundless, the phenomenon of mud completely, is conducive to civilized construction.
It is shown in Figure 1, it is preferable that the delivery port that the boiler 30 passes through the first return pipe 33 and the heat supply pipeline 11
Connection, the boiler 30 is connected by the second return pipe 34 with the delivery port of the heater, by setting first backwater
Pipe 33 and second return pipe 34, make the water in the heat supply pipeline 11 and the heater return to the boiler 30 respectively
It is interior, a circulatory system is formed, the purpose of cycling use of water, saving water resource has been reached.
It is shown in Figure 1, it is preferable that the S-type arrangement of heat supply pipeline 11, the hot water in the heat supply pipeline 11 is existed
Residence time in the floor heating groove is longer, makes full use of the heat of hot water to add sand material in the presence of heat transfer
Heat insulation, improves the utilization ratio of heat energy, saves coal resource.
Preferably, some supports are provided with the floor heating groove, the heat supply pipeline 11 is carried on the support, led to
Cross and the support is set, can both avoid the heat supply pipeline 11 because being contacted with bottom land by absorption heat, can also will be described
Heat supply pipeline 11, which is held up, to be allowed to from sand material closer to making sand material absorb more heat energy, it is to avoid the waste of heat energy, improve heat
Can utilization rate；Depending on direction of the setting direction of the support according to the heat supply pipeline 11, such as, and the heat supply pipeline 11
Bearing of trend is identical with the length direction of the floor heating groove, then the width of the bearing of trend of the support and the floor heating groove
Direction is identical.
Preferably, insulation reflecting layer is equipped with the floor heating groove, the heating tube is reduced by being incubated reflecting layer
Hot water heat in road 11 is by ground absorption, and the material in the insulation reflecting layer is all the common used material that in the market can be bought.
It is shown in Figure 1, it is preferable that to be provided with mix water tank 4, the mix water tank 4 and set by the boiler 30
Heating water tanks pipe is equipped with, the two ends of the heating water tanks pipe pass the mix water tank 4 and are connected with the boiler 30, with
This is directly heated to mixing water, it is ensured that the mix process of sand material is normally carried out during construction, even if outdoor temperature is down to
Subzero 30 DEG C, the water temperature of mixing water is up to 40 DEG C -60 DEG C, and the temperature in the feed bin canopy 1 is up to 15 DEG C.
It is shown in Figure 1, it is preferable that the mixing station 2 also includes：
Stirring host 21, the stirring host 21 is connected by belt feeder 22 with the proportioning machine 20, the belt feeder 22
Bidirectional belt conveyor can be used；
Powder tank 23, the powder tank 23 includes cementing tank and flyash silo etc., and the powder tank 23 is stirred by screw machine with described
Main frame 21 is mixed to connect；
The stirring host 21, the belt feeder 22 and the screw machine are enclosed with glass fibre cotton color steel, it is ensured that
Concrete goes out machine, molding temperature.
Preferably, stirring host 21 and the belt feeder 22 bottom is respectively connected with steel pipe column, and each steel pipe column is equal
It is fixed on underground, it is preferable that the stirring host 21 and the belt feeder 22 use φ 600mm steel pipe Driven-in Pile Foundations,
The depth that can be squeezed into according to geological conditions and load-bearing conditions difference adjustment steel pipe, using the more conventional concrete of steel pipe pile foundation
Basis, with the advantage that inserting piling is convenient, applied widely, safe and reliable, after the completion of construction, steel-pipe pile can pull out recovery profit
With, will not damage to land, be conducive to reclaiming for soil, steel-pipe pile can use circulation material, the extra input without increasing.
Preferably, the gusset of feed bin canopy 1 is enclosed provided with rock wool color plate, and the top of feed bin canopy 1 is equipped with glass fibre
Cotton color steel, rock wool color plate and glass fibre cotton color steel high insulating effect, more conventional foam color steel have anti-flammability
The low advantage of good, safe, thermal conductivity factor.
The feed bin canopy 1 is formed by multiple feed bin canopy unit spliceds, and feed bin canopy unit can be constructed as follows：
(1) two row's concretes basis is poured, it is preferable that the specification on the concrete basis is 1500mm × 1500 × 1800, Mei Gesuo
Embedded built-in fitting on the basis of concrete is stated, column is installed on the basis of each concrete, column bottom is welded with the built-in fitting, preferably
Ground, the column specification is φ 377mm.
(2) C14 type steel skeletons are welded between column described in adjacent the two of outermost, and are sealed with the rock wool color plate
Close, it is preferable that the rock wool color plate thickness is 100mm.
Respectively be welded between a 2I32a shaped steel, 2I32a shaped steel described in two at the top of column described in (3) two rows be welded with it is multiple
Arch truss, the arch truss uses 40 × 2.0mm of φ 48 × 3.0mm and φ steel-pipe welding, the two neighboring arch
Truss is at a distance of 3m.
(4) many C14 shaped steel are laid on the arch truss, spacing is 1m, and it is color in laying glass fibre cotton thereon
Steel plate is closed, it is preferable that the glass fibre cotton color steel thickness is 50mm.
The feed bin canopy 1 is with blast (0.4KN/m2), crushing by snow 0.45KN/m2) on the basis of, security performance is high.
Preferably, the head clearance of feed bin canopy 1 is provided with some transparent color steels, and daylighting effect is good, and daytime need not
Using power lighting, the energy is saved, it is preferable that distance is 9m between two pieces of transparent color steels.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as the protection of the present invention
Within the scope of.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (10)
1. a kind of totally-enclosed ground heating heat insulation formula concrete plant, it is characterised in that：A kind of totally-enclosed ground heating heat insulation formula concreter
Factory, it is characterised in that it includes：
The feed bin canopy (1) of closing, is provided with several sandstone feed bins (10) in the feed bin canopy (1), described at least one of which
Sandstone feed bin (10) orlop offers floor heating groove, is equipped with heat supply pipeline (11) in the floor heating groove, the floor heating
Steel deck-plate is covered with groove；
Mixing station (2), it includes the proportioning machine (20) being installed in the feed bin canopy (1), and the proportioning machine (20) has heating
Device；
Heating system (3), it includes boiler (30), and the boiler (30) passes through the first outlet pipe (31) and the heat supply pipeline
(11) water inlet connection, the boiler (30) is connected by the second outlet pipe (32) with the water inlet of the heater.
2. a kind of totally-enclosed ground heating heat insulation formula concrete plant as claimed in claim 1, it is characterised in that：The boiler (30)
Connected by the first return pipe (33) with the delivery port of the heat supply pipeline (11), the boiler (30) passes through the second return pipe
(34) delivery port with the heater is connected.
3. a kind of totally-enclosed ground heating heat insulation formula concrete plant as claimed in claim 1, it is characterised in that：The heat supply pipeline
(11) S-type arrangement.
4. a kind of totally-enclosed ground heating heat insulation formula concrete plant as claimed in claim 1, it is characterised in that：The floor heating groove
Some supports are inside provided with, the heat supply pipeline (11) is carried on the support.
5. a kind of totally-enclosed ground heating heat insulation formula concrete plant as claimed in claim 1, it is characterised in that：The floor heating groove
Inside it is equipped with insulation reflecting layer.
6. a kind of totally-enclosed ground heating heat insulation formula concrete plant as claimed in claim 1, it is characterised in that：The boiler (30)
Side is provided with mix water tank (4), the mix water tank (4) and is provided with heating water tanks pipe, the two of the heating water tanks pipe
End passes the mix water tank (4) and is connected with the boiler (30).
7. a kind of totally-enclosed ground heating heat insulation formula concrete plant as claimed in claim 1, it is characterised in that：The mixing station
(2) also include：
Stirring host (21), the stirring host (21) is connected by belt feeder (22) with the proportioning machine (20)；
Powder tank (23), the powder tank (23) is connected by screw machine with the stirring host (21)；
The stirring host (21), the belt feeder (22) and the screw machine are enclosed with glass fibre cotton color steel.
8. a kind of totally-enclosed ground heating heat insulation formula concrete plant as claimed in claim 7, it is characterised in that：The stirring host
(21) and the belt feeder (22) bottom is respectively connected with steel pipe column, each steel pipe column is both secured to underground.
9. a kind of totally-enclosed ground heating heat insulation formula concrete plant as claimed in claim 1, it is characterised in that：The feed bin canopy
(1) gusset is enclosed provided with rock wool color plate, and glass fibre cotton color steel is equipped with the top of the feed bin canopy (1).
10. a kind of totally-enclosed ground heating heat insulation formula concrete plant as claimed in claim 1, it is characterised in that：The feed bin canopy
(1) head clearance is provided with some transparent color steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710552421.9A CN107310045B (en) | 2017-07-07 | 2017-07-07 | Totally-enclosed ground heating heat preservation type concrete works |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710552421.9A CN107310045B (en) | 2017-07-07 | 2017-07-07 | Totally-enclosed ground heating heat preservation type concrete works |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107310045A true CN107310045A (en) | 2017-11-03 |
| CN107310045B CN107310045B (en) | 2020-05-12 |
Family
ID=60178279
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710552421.9A Active CN107310045B (en) | 2017-07-07 | 2017-07-07 | Totally-enclosed ground heating heat preservation type concrete works |
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| Country | Link |
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| CN (1) | CN107310045B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266012A (en) * | 2018-01-17 | 2018-07-10 | 中铁隆工程集团有限公司 | A kind of sandstone feed bin for winter construction |
| CN108951636A (en) * | 2018-07-13 | 2018-12-07 | 中国电建集团铁路建设有限公司 | A kind of extremely frigid zones subway station concrete construction heat preserving method |
| CN109610894A (en) * | 2018-12-10 | 2019-04-12 | 中交公局桥隧工程有限公司 | A kind of blending station thermal insulation construction technique |
| CN110370452A (en) * | 2019-07-31 | 2019-10-25 | 中交路桥北方工程有限公司 | A kind of concrete mixing station heating heat preserving method |
| CN114474338A (en) * | 2022-01-05 | 2022-05-13 | 中铁八局集团第七工程有限公司 | Prefabrication production method for railway T beam in high-cold high-altitude area |
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| JPH01214606A (en) * | 1988-02-23 | 1989-08-29 | Nikko Kk | Manufacture of asphalt composite material and ready-mix concrete, and device therefor |
| CN202053382U (en) * | 2011-05-05 | 2011-11-30 | 天津二十冶建设有限公司 | Winter construction heating system for mixing plant |
| CN103291322A (en) * | 2013-05-08 | 2013-09-11 | 中铁隧道集团有限公司 | Anti-freezing heating method for concrete construction of double-track railway tunnels in winter |
| CN203345490U (en) * | 2013-06-19 | 2013-12-18 | 方圆集团海阳建设机械有限公司 | Water heating device used for aggregate hopper in winter |
| CN203876048U (en) * | 2014-05-19 | 2014-10-15 | 三一汽车制造有限公司 | Mixing station |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01214606A (en) * | 1988-02-23 | 1989-08-29 | Nikko Kk | Manufacture of asphalt composite material and ready-mix concrete, and device therefor |
| CN202053382U (en) * | 2011-05-05 | 2011-11-30 | 天津二十冶建设有限公司 | Winter construction heating system for mixing plant |
| CN103291322A (en) * | 2013-05-08 | 2013-09-11 | 中铁隧道集团有限公司 | Anti-freezing heating method for concrete construction of double-track railway tunnels in winter |
| CN203345490U (en) * | 2013-06-19 | 2013-12-18 | 方圆集团海阳建设机械有限公司 | Water heating device used for aggregate hopper in winter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266012A (en) * | 2018-01-17 | 2018-07-10 | 中铁隆工程集团有限公司 | A kind of sandstone feed bin for winter construction |
| CN108951636A (en) * | 2018-07-13 | 2018-12-07 | 中国电建集团铁路建设有限公司 | A kind of extremely frigid zones subway station concrete construction heat preserving method |
| CN109610894A (en) * | 2018-12-10 | 2019-04-12 | 中交公局桥隧工程有限公司 | A kind of blending station thermal insulation construction technique |
| CN110370452A (en) * | 2019-07-31 | 2019-10-25 | 中交路桥北方工程有限公司 | A kind of concrete mixing station heating heat preserving method |
| CN114474338A (en) * | 2022-01-05 | 2022-05-13 | 中铁八局集团第七工程有限公司 | Prefabrication production method for railway T beam in high-cold high-altitude area |
| CN114474338B (en) * | 2022-01-05 | 2024-05-28 | 中铁八局集团第七工程有限公司 | Prefabrication production method for railway T-beam in high-cold high-altitude area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107310045B (en) | 2020-05-12 |
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