CN110241842A - Jump storehouse top and bottom process construction method in a kind of cooling tower large-sized annular basis - Google Patents
Jump storehouse top and bottom process construction method in a kind of cooling tower large-sized annular basis Download PDFInfo
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- CN110241842A CN110241842A CN201910626121.XA CN201910626121A CN110241842A CN 110241842 A CN110241842 A CN 110241842A CN 201910626121 A CN201910626121 A CN 201910626121A CN 110241842 A CN110241842 A CN 110241842A
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- storehouse
- ring group
- cooling tower
- construction method
- reinforcing bar
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- General Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The present invention discloses a kind of cooling tower large-sized annular basis and jumps storehouse top and bottom process construction method, and for solving the problems, such as integral cast-in-situ method in the prior art and contiguous segmentation construction method, in the presence of not being suitable for, huge foundation is constructed, crack easily occurs in integral cast-in-situ and contiguous segmentation construction method construction speed is slow and the period is long;Including step 1: cooling tower large foundation point storehouse is divided into several ring group point storehouses according to certain sequence;Step 2: ring group reinforcing bar binding: step 3: template installation;Step 4: ring group concrete placings;Step 5: concrete placings are complete, and using plastic covering film, covering blanket bedding, simultaneously timing is sprinkled water;Cooling tower large foundation point storehouse is divided into several ring group point storehouses according to certain sequence and method selection ring group point storehouse in storehouse is jumped using segmentation and is poured, jumping the construction of storehouse method using segmentation can effectively avoid the above common quality defect and period long compared to other two kinds of techniques, have the advantages that reliable in quality, save the duration, is economical.
Description
Technical field
The present invention relates to engineering construction fields, are related to a kind of construction method, specifically a kind of cooling tower large-sized annular basis
Jump storehouse top and bottom process construction method.
Background technique
Cooling tower foundation construction at present is other than using integral cast-in-situ method, also using segmentation casting method, wherein dividing
Section casting method includes contiguous segmentation construction method and jump storehouse method construction method.One-piece casting method short construction period, but not
It constructs suitable for huge foundation, crack easily occurs in huge foundation integral cast-in-situ.Contiguous segmentation construction method construction speed is slow
Slowly, the period is long;The present invention jumps the construction of storehouse method using segmentation, and the period is short, and construction quality is good.Segmentation jumps the construction of storehouse method and compares other two
Kind technique can effectively avoid the above common quality defect and period long, have many advantages, such as reliable in quality, save the duration, is economical.
Summary of the invention
The purpose of the present invention is to provide a kind of cooling tower large-sized annular bases to jump storehouse top and bottom process construction method, and the present invention will
Cooling tower large foundation point storehouse is divided into several ring group point storehouses and jumps storehouse method using segmentation according to certain sequence chooses ring group
Point storehouse simultaneously pours, and jumping the construction of storehouse method using segmentation can be effective compared to two kinds of techniques of integral cast-in-situ method and contiguous segmentation construction method
It avoids the above common quality defect and period long, has the advantages that reliable in quality, save the duration, is economical.
The technical problems to be solved by the invention are as follows:
(1) integral cast-in-situ method and the presence of contiguous segmentation construction method are not suitable for huge foundation and apply in the prior art
The problem that crack easily occur in work, integral cast-in-situ and contiguous segmentation construction method construction speed is slow and the period is long.
The purpose of the present invention can be achieved through the following technical solutions: jump storehouse top and bottom process in a kind of cooling tower large-sized annular basis
Construction method, method includes the following steps:
Step 1: cooling tower large foundation point storehouse is divided into several ring group point storehouses according to certain sequence;
Step 2: the binding of ring group reinforcing bar: storehouse is divided to carry out blinding layer laying ring group, after the completion of laying, in blinding layer
It is upper corresponding by snap the line pop-up ring group sideline, herringbone column's buttress water outlet and pool wall reinforcement location line and pool wall reinforcement location line
The stepping mark of reinforcing bar;The support of steel pipe shelf is set up according to stepping mark;After the completion of steel pipe shelf is set up, according to pool wall reinforcing bar position
Line correspondence is set to put reinforcing bar and checked reinforcing bar model according to stepping mark;After verification is good, then start assembling reinforcement, for ring group
Reinforcing bar draws lines on steel pipe shelf, first puts top bars, then puts large and small stirrup, after top bars have been bound, then wears pendulum bottom
Portion's muscle finally binds side muscle and intermediate cracking resistance muscle;
Step 3: foundation forms template installation: is used into scaffold tubes and work on the outside of ring group radius assembling combination, foundation forms
Word steel is reinforced;Building ring group divides the template of storehouse construction joint;
Step 4: ring group concrete placings: method selection ring group point storehouse in storehouse is jumped using segmentation and is poured;Each ring group point storehouse is adopted
Concreting is carried out with slope casting method, is then vibrated concrete by vibrating spear;
Step 5: concrete placings are complete, and using plastic covering film, covering blanket bedding, simultaneously timing is sprinkled water;To the ring group poured
Storehouse is divided to carry out thermometric;The temperature difference between inside and outside concrete poured is less than setting threshold values, carries out demoulding.
Preferably, foundation forms described in step 3 is steel template or wooden template.
Preferably, the step of building ring group described in step 3 divides the template of storehouse construction joint are as follows: by two layers of grid steel wire
It is superimposed and is welded into reinforced mesh by several reinforcing bars on the outside of superimposed two layers of steel wire, construct to form ring group point storehouse
The template of seam
Preferably, segmentation described in step 4 jumps storehouse method and pours interval time 14 days to ring group sequence placing.
Preferably, the principle of thermometric is carried out described in step 5 to the ring group point storehouse poured are as follows: divide cloth on storehouse in ring group
Three groups of temperature measuring points are set, every group of temperature measuring point includes three temperature tubes.
Beneficial effects of the present invention: storehouse top and bottom process construction method is jumped on the cooling tower large-sized annular basis, by cooling tower large size
Basis point storehouse is divided into several ring group point storehouses according to certain sequence and jumps storehouse method selection ring group point storehouse using segmentation and pour,
Jumping the construction of storehouse method using segmentation can effectively avoid the above common quality defect and period long compared to other two kinds of techniques, have quality can
It leans on, save duration, economic advantage.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is cooling tower large foundation point storehouse figure of the invention;
Fig. 2 is reserved groove cross-sectional view of the invention;
Fig. 3 is slope casting method schematic diagram of the invention;
Fig. 4 is thermometer hole layout drawing of the invention;
Fig. 5 is A schematic enlarged-scale view of the invention;
Fig. 6 is reinforced mesh structural schematic diagram of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
It please refers to shown in Fig. 1-6, the present invention is that storehouse top and bottom process construction method, the party are jumped in a kind of cooling tower large-sized annular basis
Method the following steps are included:
Step 1: cooling tower large foundation point storehouse is divided into several ring group point storehouses according to certain sequence;Specific manifestation are as follows:
Such as Fig. 1, cooling tower large foundation point storehouse is divided into 14 storehouses, sequence of construction be 1 storehouse, 3 storehouses, 5 storehouses ... then 13 storehouses construct 2
Storehouse, 4 storehouses, 6 storehouses ... 14 storehouses;
Step 2: dividing storehouse to carry out blinding layer laying ring group, after the completion of laying, is popped up on blinding layer by snap the line
Ring group sideline, herringbone column's buttress water outlet 22 and pool wall reinforcement location line and pool wall reinforcement location line correspond to the stepping mark of reinforcing bar
Will;The support of steel pipe shelf is set up according to stepping mark;After the completion of steel pipe shelf is set up, put according to pool wall reinforcement location line correspondence
Reinforcing bar has simultaneously checked reinforcing bar model according to stepping mark;After verification is good, then start assembling reinforcement, for ring group reinforcing bar in steel pipe frame
It draws lines on son, first puts top bars, then put large and small stirrup, after top bars have been bound, then wear pendulum bottom muscle, finally tie up
Prick side muscle and intermediate cracking resistance muscle;The connector main reinforcement of ring group reinforcing bar is straight screw sleeve connection;Stirrup and top bars pass through hand
Work arc welding, joint location should mutually stagger when binding and the spacing that is staggered is greater than 30 times of steel bar stress diameter;
Step 3: by foundation forms along ring group radius assembling combination, foundation forms is steel template or wooden template, this hair
Bright selection steel template, steel template installation speed is fast, and concrete formation is beautiful, and formwork structure intensity is big, and steel template is easy to
It recycles;It is reinforced on the outside of foundation forms with scaffold tubes and I-steel;Such as Fig. 6, ring group divides storehouse construction joint 21 to utilize two layers of 3mm*
3mm grid steel wire 31, outside reinforce the first reinforcing bar 32 and the second reinforcing bar 33 and are welded into 800mm*800mm reinforced mesh, and first
The nominal diameter of reinforcing bar 32 is 20mm;The nominal diameter of second reinforcing bar 33 is 14mm;To form ring group point storehouse construction joint 21
Template;Steel wire and support mesh sheet are not removed when pouring;Such as Fig. 2, treatment of construction joints is by concrete among pool wall between ring group and pool wall
After reserved groove 11, it is embedded in water expandable waterstop 13 before pool wall concrete placings, reaches antiseep purpose, is put into reserved groove 11
It is made into 20mm*50mm*1000mmm batten with the lumps of wood, in time roots out concrete surface cement slurry after taking out the lumps of wood;Guarantee that it is stayed
The sectional area of groove depth and width, insertion water expandable waterstop 13 is greater than or equal to 30mm*30mm, is embedded in water-swellable sealing
When item 13, overlapping splice 100mm is leaned on 12 both ends stickfast of cement steel nail, remaining follows closely a cement steel nail 12 every 150mm,
It avoids water expandable waterstop 13 mobile and falls off;
Step 4: ring group concrete placings: method selection ring group point storehouse in storehouse is jumped using segmentation and pours and pours interval time 14
It, specific manifestation are as follows: pouring sequence is first to pour 1,3,5,7,9,11,13 storehouses, 14 days after-pourings 2,4,6,8,10,12,14
Storehouse, reinforcing bar have all disposably been bound, and template starts 7 storehouse of continuous placing, 14 days after-pourings after completing 1,3,5,7,9,11,13 storehouses
Another 7 storehouse;Such as Fig. 3, to each ring group point storehouse, using slope pouring technique, " concrete uses inclined plane delamination, ladder to promote, once arrive
The casting method on top " to form slope and be layered using trickling naturally, and concrete trickling length is formed within the scope of 4~6m
Stage layering improves pumping work efficiency to reach, the reserved regular hour interruption of layer and layer, but concrete engagement between layers
Time control is completed before concrete initial set, and every layer concrete thickness is no more than 1.25 times of vibrating spear effective length;Then by vibrating
Stick vibrates concrete;The construction procedure of vibrating spear are as follows:
S1: first is arranged in pouring out concrete point, and the hand that vibrates is responsible for vibrating for pipe concrete, is allowed to pass through face
Muscle flows into bottom;
S2: the intermediate position of concrete is arranged in second, and the hand that vibrates is responsible for the compactness of concrete;
S3: third road is arranged at slope angle and bottom layer of the reinforcing steel, and because bottom layer of the reinforcing steel spacing is closeer, the hand that vibrates is responsible for coagulation soil flow
Enter lower layer's reinforcing bar bottom, it is ensured that reinforcing bar lower-layer concrete vibration compacting;
S4: it is compacted when concrete is poured into top surface with trowel, press polish;
Step 5: concrete placings are complete, and using plastic covering film, covering blanket bedding, simultaneously timing is sprinkled water;To the ring group poured
Storehouse is divided to carry out thermometric;Such as Fig. 4-5, three groups of temperature measuring points 23 are set respectively in every storehouse of ring group, uniformly distributed, every group of temperature measuring point includes
First temperature tube 24, the second temperature tube 25 and third temperature tube 26;The length of first temperature tube 24 is 0.1m, the second temperature tube 25
Length be 0.7m, the length of third temperature tube 26 is 1.4m;Temperature is measured with pvc tube temperature degree, buries temperature tube when breaking concrete
Enter;It shuts and penetrates 12 reinforcing bar of Φ in concreting front tube, pour into mortar to prevent temperature tube and pouring in temperature tube bottom end
It is bent when concrete;Start thermometric after concreting 12 hours and establishes thermometric record;The concrete temperature rise period (in 3 days)
It surveys within every 4 hours once, surveys within temperature-fall period (3-7 days) every 6 hours once, per measurement round the clock 2 times until temperature is stable after 8 days;
The difference of surface temperature of concrete and medium temperature is less than or equal to 25 DEG C;When the temperature difference be greater than 25 DEG C, concrete surface thickening cover
Lid film and blanket;The temperature difference between inside and outside concrete poured is less than setting threshold values, carries out demoulding, demoulding is at noon compared under heating temperature
Demoulding is carried out, after demoulding when concrete temperature and circumstance of temperature difference are greater than 20 DEG C, concrete surface covers film and blanket.
The working principle of the invention: cooling tower large foundation point storehouse is divided into several ring group point storehouses according to certain sequence;
Divide storehouse to carry out blinding layer laying ring group, after the completion of laying, ring group sideline, herringbone column are popped up by snap the line on blinding layer
Buttress water outlet 22 and pool wall reinforcement location line and pool wall reinforcement location line correspond to the stepping mark of reinforcing bar;According to stepping mark
Set up the support of steel pipe shelf;After the completion of steel pipe shelf is set up, reinforcing bar is put and according to stepping according to pool wall reinforcement location line correspondence
Mark has checked reinforcing bar model;After verification is good, then start assembling reinforcement, draws lines on steel pipe shelf for ring group reinforcing bar, first put
Top bars, then large and small stirrup is put, after top bars have been bound, then pendulum bottom muscle is worn, finally binds side muscle and centre
Cracking resistance muscle;Foundation forms is reinforced on the outside of ring group radius assembling combination, foundation forms with scaffold tubes and I-steel;Using segmentation
Storehouse method is jumped to choose ring group point storehouse and pour and pour interval time 14 days;Concrete placings are complete using plastic covering film, covering cotton
Felt bedding and timing watering;Thermometric is carried out to the ring group point storehouse poured, finally carries out tearing plate open;Method construction phase in storehouse is jumped using segmentation
It can effectively avoid the above common quality defect and period long than other two kinds of techniques, with reliable in quality, save the duration, economical excellent
Point.
Above content is only to structure of the invention example and explanation, affiliated those skilled in the art couple
Described specific embodiment does various modifications or additions or is substituted in a similar manner, without departing from invention
Structure or beyond the scope defined by this claim, is within the scope of protection of the invention.
Claims (5)
1. storehouse top and bottom process construction method is jumped on a kind of cooling tower large-sized annular basis, which is characterized in that method includes the following steps:
Step 1: cooling tower large foundation point storehouse is divided into several ring group point storehouses according to certain sequence;
Step 2: the binding of ring group reinforcing bar: dividing storehouse to carry out blinding layer laying ring group, after the completion of laying, leads on blinding layer
It crosses snap the line pop-up ring group sideline, herringbone column's buttress water outlet and pool wall reinforcement location line and pool wall reinforcement location line corresponds to reinforcing bar
Stepping mark;The support of steel pipe shelf is set up according to stepping mark;After the completion of steel pipe shelf is set up, according to pool wall reinforcement location line
Correspondence puts reinforcing bar and has checked reinforcing bar model according to stepping mark;After verification is good, then start assembling reinforcement, for ring group reinforcing bar
It draws lines on steel pipe shelf, first puts top bars, then put large and small stirrup, after top bars have been bound, then wear pendulum bottom
Muscle finally binds side muscle and intermediate cracking resistance muscle;
Step 3: foundation forms template installation: is used into scaffold tubes and I-steel on the outside of ring group radius assembling combination, foundation forms
It reinforces;Building ring group divides the template of storehouse construction joint;
Step 4: ring group concrete placings: method selection ring group point storehouse in storehouse is jumped using segmentation and is poured;Divide storehouse using oblique each ring group
Slope casting method carries out concreting, is then vibrated concrete by vibrating spear;
Step 5: concrete placings are complete, and using plastic covering film, covering blanket bedding, simultaneously timing is sprinkled water;To the ring group point storehouse poured
Carry out thermometric;The temperature difference between inside and outside concrete poured is less than setting threshold values, carries out demoulding.
2. storehouse top and bottom process construction method is jumped on a kind of cooling tower large-sized annular basis according to claim 1, which is characterized in that
Foundation forms described in step 3 is steel template or wooden template.
3. storehouse top and bottom process construction method is jumped on a kind of cooling tower large-sized annular basis according to claim 1, which is characterized in that
Building ring group described in step 3 divides the step of template of storehouse construction joint are as follows: by two layers of grid steel wire superposition and superimposed
It is welded into reinforced mesh by several reinforcing bars on the outside of two layers of steel wire, to form the template of ring group point storehouse construction joint.
4. storehouse top and bottom process construction method is jumped on a kind of cooling tower large-sized annular basis according to claim 1, which is characterized in that
Segmentation described in step 4 jumps storehouse method and pours interval time 14 days to ring group sequence placing.
5. storehouse top and bottom process construction method is jumped on a kind of cooling tower large-sized annular basis according to claim 1, which is characterized in that
The principle of thermometric is carried out described in step 5 to the ring group point storehouse poured are as follows: three groups of temperature measuring points are arranged on ring group point storehouse, often
Group temperature measuring point includes three temperature tubes.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110761561A (en) * | 2019-10-18 | 2020-02-07 | 中铁八局集团第六工程有限公司 | Construction process of special concrete for compensating crack resistance |
CN111236720A (en) * | 2020-01-20 | 2020-06-05 | 中材海外工程有限公司 | Construction method for pouring silo decompression cone without construction joint |
CN111396077A (en) * | 2020-03-10 | 2020-07-10 | 北京市政建设集团有限责任公司 | Tunnel air duct secondary lining construction method |
CN114525872A (en) * | 2022-01-14 | 2022-05-24 | 福建省实盛建设工程有限公司 | Construction method of assembled type superposed beam slab |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110761561A (en) * | 2019-10-18 | 2020-02-07 | 中铁八局集团第六工程有限公司 | Construction process of special concrete for compensating crack resistance |
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CN111236720B (en) * | 2020-01-20 | 2022-06-17 | 中国中材海外科技发展有限公司 | Construction method for pouring silo decompression cone without construction joint |
CN111396077A (en) * | 2020-03-10 | 2020-07-10 | 北京市政建设集团有限责任公司 | Tunnel air duct secondary lining construction method |
CN114525872A (en) * | 2022-01-14 | 2022-05-24 | 福建省实盛建设工程有限公司 | Construction method of assembled type superposed beam slab |
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Application publication date: 20190917 |