CN109505258A - A kind of continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method - Google Patents
A kind of continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method Download PDFInfo
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- CN109505258A CN109505258A CN201811584513.6A CN201811584513A CN109505258A CN 109505258 A CN109505258 A CN 109505258A CN 201811584513 A CN201811584513 A CN 201811584513A CN 109505258 A CN109505258 A CN 109505258A
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- air feed
- main pipeline
- construction method
- concrete
- feed main
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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
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention belongs to the technical fields that large-span continuous beam or Long Span Continuous Rigid-Frame Structure beam 0# block are constructed, in order to solve large span, it is big that web and base plate thickness are greater than 1m hydration heat of concrete, damage concrete inner structure, influence concrete service performance, the problems such as causing the diseases such as beam cracks, provide a kind of continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method, this whose invention is to arrange air feed connecting tube and preformed hole in the binding of 0# block reinforcing bar and template installation process, later period uses central air-conditioning, cold wind is collected and air feed supercharger is realized and provides high pressure cold wind, reduce the heat that concrete hydrating generates, avoid concrete internal temperature is excessively high from causing the various diseases of concrete, it is big that the construction method overcomes the conventional construction method mass concrete heat of hydration, the problems such as internal temperature sharply increases, it ensure that large span The quality of continuous beam 0# block work progress ensure that construction safety, improve construction efficiency.
Description
Technical field
The invention belongs to the technical fields that large-span continuous beam or Long Span Continuous Rigid-Frame Structure beam 0# block are constructed, and in particular to one
Kind continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method.
Background technique
With the rapid development of the capital construction facilities such as high-speed railway, highway, city intersection road, large span cross-line, across
The structure types bridge such as river continuously emerges, and span constantly increases, and 0# block height and thickness constantly increase, coagulation when thickness is greater than 1m
Soil pours maintenance and just should be conserved and be controlled by mass concrete, but for this part, maturation controls existing construction technology not yet
Method, disease caused by hydration heat of concrete continue to bring out, cause the diseases such as beam body surface crack, seriously affect bridge quality,
To guarantee large-span continuous beam body construction quality, therefore propose a kind of continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction party
Method reduces mass concrete aquation and generates heat, guarantees Construction of continuous beam quality.
Summary of the invention
The present invention is big greater than 1m hydration heat of concrete in order to solve large span, web and base plate thickness, damages in concrete
The problems such as portion's structure influences concrete service performance, causes the diseases such as beam cracks, and then provide a kind of continuous beam 0# block bottom
Web Temperature Controlling of Mass Concrete construction method generates heat to reduce mass concrete aquation, guarantees beam body construction quality.
The present invention adopts the following technical scheme:
A kind of continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method, which is characterized in that be using perpendicular in web
Cold wind air feed system is arranged in transverse prestress duct into prestressed pore passage and partition wall, is that web is real using cold wind air feed system
Shi Dingliang provides cooling-down cold air blast.
The cold wind air feed system include vertical air feed main pipeline, lateral air feed main pipeline, central air-conditioning, wind-drive device and
Supercharger, several vertical air feed main pipelines are correspondingly arranged in the vertical prestressing force opening of web, several transverse direction air feed main pipelines pair
It should be set in partition wall transverse prestress duct；Each vertical air feed main pipeline and lateral air feed main pipeline connect with air feed main pipeline respectively
It connects, air feed main pipeline is connect with central air-conditioning air outlet, and air feed main pipeline is set in the preformed hole of web bottom plate, and wind-drive device is set
It is arranged at central air-conditioning air outlet, supercharger is connect with wind-drive device.
It is respectively equipped with control valve on vertical air feed main pipeline and lateral air feed main pipeline, then can control and vertically answer in advance respectively
The air feed of hydraulic piping and transverse prestress pipeline is realized independent air feed, is not interfere with each other.
The air feed main pipeline is equipped with temperature monitoring table, so as to examinations and adjusts ventilation temperature.
It is equipped with humidifier in the wind-drive device, guarantees the humidity requirement of air feed while cooling.
The present invention is that laying is corresponded to using the intrinsic vertical prestressing force opening of web and transverse prestress duct accordingly
Vertical air feed main pipeline (i.e. several vertical branch pipes) and lateral air feed main pipeline (i.e. several athwartship legs), utilize vertical air feed
Main pipeline and lateral air feed main pipeline cool down to be evenly distributed with to supply cold wind inside web, vertical air feed main pipeline and lateral air feed supervisor
Cold wind in road be through central air-conditioning, air feed main pipeline, after concrete initial set using central air-conditioning, cold wind is collected and air feed
Supercharger, which is realized, provides high pressure cold wind, reduces the heat that concrete hydrating generates, avoids concrete internal temperature is excessively high from causing to mix
The solidifying various diseases of soil, the construction method overcome that the conventional construction method mass concrete heat of hydration is big, and internal temperature sharply rises
The problems such as high, ensure that the quality of large-span continuous beam 0# block work progress, ensure that construction safety, improve construction efficiency；And
Vertical air feed main pipeline and lateral air feed main pipeline can be controlled separately air feed, not interfere with each other.
Detailed description of the invention
Fig. 1 is vertical prestressing air feed system layout drawing；
Fig. 2 is transverse prestress layout drawing；
Fig. 3 is transverse prestress duct air feed system layout drawing；
Fig. 4 is that air feed main pipeline is schemed with for air port setting；
In figure: the pre-buried cold wind of the vertical air feed main pipeline of 1-, 2- vertical prestressing force opening, 3- vertical prestressing injects connecting tube, 4-
Web reserve steam line hole, 6- transverse direction air feed main pipeline, 7- transverse prestress gas supply connector, 8- transverse prestress duct,
9- supplies preformed hole, 10- air feed main pipeline, 11- and supplies connector.
Specific embodiment
According to 0# sections of overall construction process: mounting bracket → temporary consolidation pier → vertical end template → precompressed → installation is forever
Long support → binding bottom web reinforcement (installation of vertical prestressing bar air feed connecting branch) → vertical side form, the vertical bellows of installation
And fining twisted steel and longitudinal corrugated pipe → Zhi Linei backform and outer wing mould → binding roof steel bar, the horizontal and vertical wave of installation
Line pipe (installation of web air feed preformed hole) → casting concrete → concrete curing (open, strict control concrete by air feed system
Internal temperature) → tensioning mud jacking → form removal and support system.
Therefore, the present invention lays construction cold wind air feed system while pouring construction web, and cold wind air feed system includes
Central air-conditioning, cold wind collection device and humidification apparatus, air feed supercharger, vertical prestressing air supply line, transverse prestress pipeline
Air supply line；Several vertical air feed main pipelines are correspondingly arranged in the vertical prestressing force opening of web, several transverse direction air feed main pipelines
It is correspondingly arranged in partition wall transverse prestress duct；Each vertical air feed main pipeline and lateral air feed main pipeline respectively with air feed main pipeline
Connection, air feed main pipeline are connect with central air-conditioning air outlet, and air feed main pipeline is set in the preformed hole of web bottom plate, wind-drive device
Setting is set at central air-conditioning air outlet, and supercharger is connect with wind-drive device.The system is additionally provided with temperature monitoring table simultaneously, in real time
It monitors into pipeline temperature, duct effluent air temp, adjusts cold wind temperature in real time, it is ensured that concrete internal temperature control effect.
Specific construction process is as follows:
1) pier shaft all uses placement layer by layer of large scale steel mould board bottom web, large-span continuous beam or Long Span Continuous Rigid-Frame Structure beam,
Web design has a vertical prestressing force opening, and partition wall design has a transverse prestress duct, this system by vertical prestressing force opening and
Cold wind air supply line system is arranged in partition wall transverse prestress duct, and central air-conditioning is arranged using 0# intersegmental part space, provides drop
Warm cold wind, air-conditioner air outlet are arranged wind-drive device, humidifier are arranged in device, guarantee to provide the humidity of cold wind；Wind-drive device
Supercharger is arranged in rear side, guarantees air supply line wind pressure and volume of air supply, meets each duct needs.
2) vertical prestressing connecting pipe of pipeline, when prestress pipe and reinforcing bar are bound, location and installation, concreting is complete
Cheng Hou arranges air feed main pipeline, and vertical prestressing connecting pipe of pipeline is connect with main pipeline to be connected using rubber hose, air feed supervisor
Road is processed using 5cm steel pipe, and vertical prestressing cools down pipeline spacing as 60cm, and main pipeline is installed 60cm setting branch pipe in advance and connected
Mouthful；
3) vertical prestressing pipeline (i.e. vertical gas manifold road) sets expansion bolt using web wall and fixes, and guarantees that pipeline is steady
It is fixed；
4) when 0# block reinforcing bar and template are installed, steam line hole is reserved in a coxostermum bottom plate, after the completion of pouring, 7cm master is installed
Pipeline, vertical branch pipe(tube) use 5cm steel pipe, and vertical branch pipe(tube) is arranged for air port, according to partition transverse prestress pipeline enclosure away from setting
It sets.
5) vertical prestressing pipeline and transverse prestress pipeline air feed system, take independent air feed system, do not interfere with each other.
Wherein, wind-drive device, supercharging device, humidifier and central air-conditioning etc. are the prior art, and the present invention can basis
Construction requirement type selecting uses.
Claims (5)
1. a kind of continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method, which is characterized in that be using in web
Cold wind air feed system is arranged in transverse prestress duct in vertical prestressing force opening and partition wall, is web using cold wind air feed system
Real-time quantitative provides cooling-down cold air blast.
2. continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method according to claim 1, which is characterized in that
The cold wind air feed system includes vertical air feed main pipeline, lateral air feed main pipeline, central air-conditioning, wind-drive device and supercharger,
Several vertical air feed main pipelines are correspondingly arranged in the vertical prestressing force opening of web, it is several transverse direction air feed main pipelines be correspondingly arranged at every
In wall transverse prestress duct；Each vertical air feed main pipeline and lateral air feed main pipeline are connect with air feed main pipeline respectively, air feed
Main pipeline is connect with central air-conditioning air outlet, and air feed main pipeline is set in the preformed hole of web bottom plate, and wind-drive device is set to
At central air-conditioning air outlet, supercharger is connect with wind-drive device.
3. continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method according to claim 2, which is characterized in that
Control valve is respectively equipped on vertical air feed main pipeline and lateral air feed main pipeline.
4. continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method according to claim 3, the air feed master
Pipeline is equipped with temperature monitoring table.
5. continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method according to claim 4, the collection wind dress
Humidifier is equipped in setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811584513.6A CN109505258A (en) | 2018-12-24 | 2018-12-24 | A kind of continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811584513.6A CN109505258A (en) | 2018-12-24 | 2018-12-24 | A kind of continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method |
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| Publication Number | Publication Date |
|---|---|
| CN109505258A true CN109505258A (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811584513.6A Pending CN109505258A (en) | 2018-12-24 | 2018-12-24 | A kind of continuous beam 0# block bottom web Temperature Controlling of Mass Concrete construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120082559A (en) * | 2011-01-14 | 2012-07-24 | 현대건설주식회사 | Exchange type reduction device of concrete temperature gap by means of pipe cooling, exchange type reduction method using the device and structure using the method |
| CN204475343U (en) * | 2015-01-17 | 2015-07-15 | 新八建设集团有限公司 | The internally air-cooled heat sink of concrete in mass maintenance |
| CN105890251A (en) * | 2016-06-04 | 2016-08-24 | 中铁十九局集团第五工程有限公司 | Large-scale precast concrete box girder cooling device and cooling method thereof |
| CN106498857A (en) * | 2016-12-09 | 2017-03-15 | 中交路桥华南工程有限公司 | Temperature Controlling of Mass Concrete system |
| CN206486448U (en) * | 2017-02-27 | 2017-09-12 | 中交一公局厦门检测技术有限公司 | A kind of air-cooled temperature regulating device of mass concrete |
| CN108360381A (en) * | 2018-02-10 | 2018-08-03 | 北京工业大学 | No. 0 block web mass concrete heat sink of Continuous Concrete Box Girders |
-
2018
- 2018-12-24 CN CN201811584513.6A patent/CN109505258A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120082559A (en) * | 2011-01-14 | 2012-07-24 | 현대건설주식회사 | Exchange type reduction device of concrete temperature gap by means of pipe cooling, exchange type reduction method using the device and structure using the method |
| CN204475343U (en) * | 2015-01-17 | 2015-07-15 | 新八建设集团有限公司 | The internally air-cooled heat sink of concrete in mass maintenance |
| CN105890251A (en) * | 2016-06-04 | 2016-08-24 | 中铁十九局集团第五工程有限公司 | Large-scale precast concrete box girder cooling device and cooling method thereof |
| CN106498857A (en) * | 2016-12-09 | 2017-03-15 | 中交路桥华南工程有限公司 | Temperature Controlling of Mass Concrete system |
| CN206486448U (en) * | 2017-02-27 | 2017-09-12 | 中交一公局厦门检测技术有限公司 | A kind of air-cooled temperature regulating device of mass concrete |
| CN108360381A (en) * | 2018-02-10 | 2018-08-03 | 北京工业大学 | No. 0 block web mass concrete heat sink of Continuous Concrete Box Girders |
Non-Patent Citations (1)
| Title |
|---|
| 杨福坤: "长湖申线特大桥大体积混凝土温控防裂措施", 铁道建筑科技, no. 1, pages 182 - 185 * |
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