CN109235270A - A kind of main pier bearing platform construction technology - Google Patents
A kind of main pier bearing platform construction technology Download PDFInfo
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- CN109235270A CN109235270A CN201811154842.7A CN201811154842A CN109235270A CN 109235270 A CN109235270 A CN 109235270A CN 201811154842 A CN201811154842 A CN 201811154842A CN 109235270 A CN109235270 A CN 109235270A
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- 238000010276 construction Methods 0.000 title claims abstract description 34
- 238000005516 engineering process Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000004567 concrete Substances 0.000 claims abstract description 80
- 239000000498 cooling water Substances 0.000 claims abstract description 52
- 238000001816 cooling Methods 0.000 claims abstract description 42
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
- 238000003860 storage Methods 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000012423 maintenance Methods 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000003020 moisturizing effect Effects 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 75
- 239000002344 surface layer Substances 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 210000003205 muscle Anatomy 0.000 claims description 2
- 210000002435 tendon Anatomy 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of main pier bearing platform construction technology, the construction technology includes the following steps: that (1) main pier bearing platform is poured a, concrete base casting in three times；B, concrete middle layer is poured；C, concrete upper layer is poured；(2) temperature-control construction；It is included in above-mentioned concreting process three times after carrying out real-time monitoring and concreting to concrete internal temperature and leads to cooling water progress internal cooling in time；(3) insulated curing takes water storage and thermal insulation maintenance or covering and heat insulating moisturizing material insulated curing after concreting.The present invention can carry out real-time monitoring to concrete internal temperature in casting process, grasp concrete internal temperature field situation in time, and carry out internal cooling in time by cooling water system, reduce concrete cracking risk, improve construction quality.
Description
Technical field
The present invention relates to bearing platform construction techniques, and in particular to a kind of main pier bearing platform construction technology.
Background technique
Main Pier of Bridges is essentially a clump of piles or open caisson, for the bridge of grouped piles cap, aesthetically, mostly by cushion cap bottom
Face is placed in ordinary water level hereinafter, since working water level is lower than ordinary water level, can be with if cushion cap is all more than working water level when construction
It constructs according to a conventional method；If cushion cap some under water, the method that steel jacket box is usually taken is constructed.But it applies
Working hour entire cushion cap all in the water surface hereinafter, and cushion cap volume it is bigger, generally using steel jacket box construct；Cushion cap is typical case
Large volume concrete structural, be difficult to be controlled due to the temperature of concrete in construction, there are concrete to open when construction
Risk is split, construction efficiency is slow, of poor quality.
Summary of the invention
Concrete cracking wind when simple, reduction that the technical problem to be solved in the present invention is to provide a kind of construction technologies is constructed
Danger, the main pier bearing platform construction technology for improving construction quality.
In order to achieve the above objectives, technical scheme is as follows:
A kind of main pier bearing platform construction technology, the construction technology include the following steps:
(1) main pier bearing platform is poured in three times
A, concrete base is poured；
B, concrete middle layer is poured；
C, concrete upper layer is poured；
Lift height when above-mentioned casting is 30-50cm, and middle layer and upper layer pour before need to the concrete poured into
Row dabbing and cleaning；
(2) temperature-control construction
It is included in above-mentioned concreting process three times and real-time monitoring and concreting is carried out to concrete internal temperature
Logical cooling water carries out internal cooling in time afterwards；
(3) insulated curing
After concreting, water storage and thermal insulation maintenance or covering and heat insulating moisturizing material insulated curing are taken.
In one embodiment of the invention, in concrete each raw material proportion are as follows: cement 215kg/m3, flyash 82
kg/m3, 33 kg/m of miberal powder3, 724 kg/m of sand3, 1181 kg/m of rubble3, 165 kg/m of water3, 3.3 kg/m of water-reducing agent3。
In one embodiment of the invention, carrying out real-time monitoring to concrete internal temperature in step (2) includes temperature
Measuring point is laid, and measuring point is laid before concreting.
In one embodiment of the invention, cushion cap temperature point horizontal layout according to the cushion cap plane axis of symmetry half item
Axis is test section, and in test section, monitoring point is arranged by planar layer, 7 temperature points of every layer of horizontal direction laying, 7
Temperature point is respectively 1-7# measuring point, and wherein 1# and 7# measuring point is surface layer measuring point, and 2-3#, 5-6# measuring point are internal measuring point, and 4# is surveyed
Point is center measuring point.
In one embodiment of the invention, pouring layer internal temperature measuring point is vertically laid along cushion cap thickness direction laying table
Layer, bottom and middle layer temperature point, specific installation position are as follows:
(1) apart from the concrete upper surface position 5cm；
(2) concrete center；
(3) apart from the position concrete bottom 5cm.
In one embodiment of the invention, it is also needed in step (2) in addition to carrying out real-time monitoring to concrete internal temperature
Real-time monitoring is carried out to concrete external temperature, the specific installation position of temperature point is as follows when real-time monitoring:
(1) 2 temperature sensors are laid in air；
(2) 2 temperature sensors are laid under insulating layer；
(3) 2 temperature sensors are laid in reservoir.
In one embodiment of the invention, lead to cooling water and carry out internal cooling using water cooling system, water cooling system
It is made of water tank, water pump, hose, water segregator and several cooling water pipes；Water pump is arranged in water tank, and water pump passes through hose
It is connect with the input end of water segregator, the outlet end of water segregator is connect by cooling water pipe with water tank.
In one embodiment of the invention, concrete base pouring layer, concrete middle layer pouring layer are identical cylinder
Body, concrete surface layer pouring layer are the rotary table of variable cross-section, lay at least 2 layers of cooling water pipe inside each pouring layer, amount to and lay
At least 6 layers of cooling water pipe, cooling water pipe are vertically laid.
In one embodiment of the invention, leading to cooling water progress internal cooling, specific step is as follows:
(1) water composite cooling pipe road is arranged:
Fixed with framework of steel reinforcement or sub-truss when cooling water pipe is installed, when stringing, cooling water pipe will be with the main steel of cushion cap
Cross dystopia of muscle and tendon is opened；
(2) cooling water pipe uses preceding carry out packer permeability test:
(3) before concreting, cooling water is filled in advance in cooling water pipe；
(4) inflow temperature and the difference of concrete central temperature is made to be maintained at 15-25 DEG C by adjusting flow of inlet water, when in concrete
When heart temperature and skin temperature difference are less than 25 DEG C, suspend water cooling operations, is increased to concrete central temperature and skin temperature
When difference is greater than 25 DEG C, water cooling system is restarted；
(5) after cooling, mud jacking closure is carried out to cooling water pipe in time.
In one embodiment of the invention, water storage and thermal insulation maintenance is in the water storage of top of concrete formation 25-30cm high
Insulating layer, covering and heat insulating moisturizing material insulated curing be in concrete table the temperature difference less than 25 DEG C when carry out.
Through the above technical solutions, the beneficial effects of the present invention are:
The present invention can carry out real-time monitoring to concrete internal temperature in casting process, grasp concrete internal temperature in time
Field situation, and internal cooling is carried out by cooling water system in time, concrete cracking risk is reduced, inside concrete temperature is reduced
Peak value and internal-external temperature difference are spent, construction quality is improved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is cushion cap temperature point horizontal layout schematic diagram of the present invention；
Fig. 2 is bottom pouring layer, the vertical layout diagram of middle layer pouring layer internal temperature measuring point；
Fig. 3 is the vertical layout diagram of surface layer pouring layer internal temperature measuring point；
Fig. 4 is water cooling system structural schematic diagram of the present invention；
Fig. 5 is the vertical artwork of cooling water pipe；
Fig. 6 is 1-4 layers of cooling water pipe horizontal layout figure；
Fig. 7 is the 5th layer of cooling water pipe horizontal layout figure；
Fig. 8 is the 6th layer of cooling water pipe horizontal layout figure.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
The invention discloses a kind of main pier bearing platform construction technology, the construction technology includes the following steps:
(1) main pier bearing platform is poured in three times
A, concrete base is poured, and forms bottom pouring layer；
B, concrete middle layer is poured, and forms middle layer pouring layer；
C, concrete surface layer is poured, and forms upper layer pouring layer；
Bottom pouring layer, middle layer pouring layer are identical cylindrical body, and upper layer pouring layer is the rotary table of variable cross-section.
Lift height when above-mentioned casting is 30-50cm, and middle layer and upper layer pour before need to the coagulation poured
Soil carries out dabbing and cleaning；
The proportion of each raw material in concrete are as follows: cement 215kg/m3, 82 kg/m of flyash3, 33 kg/m of miberal powder3, 724 kg/ of sand
m3, 1181 kg/m of rubble3, 165 kg/m of water3, 3.3 kg/m of water-reducing agent3, the advantages of above-mentioned concrete is exactly to guarantee concrete
Cement consumption is reduced on the basis of design strength as far as possible, hydration heat of concrete is reduced, avoids because temperature is excessively high, excessive temperature differentials draws
Shattered crack seam.
(2) temperature-control construction
It is included in above-mentioned concreting process three times and real-time monitoring and concreting is carried out to concrete internal temperature
Logical cooling water carries out internal cooling in time afterwards；
It includes that temperature point is laid that concrete internal temperature, which carries out real-time monitoring, and measuring point is laid before concreting；
Shown in Figure 1, cushion cap temperature point horizontal layout is test section according to half axis of the cushion cap plane axis of symmetry,
In test section, monitoring point arranges that 7 temperature points of every layer of horizontal direction laying, 7 temperature points are respectively 1- by planar layer
7# measuring point (apart from concrete outer surface 5cm), wherein 1# and 7# measuring point is surface layer measuring point, and 2-3#, 5-6# measuring point are internal measuring point,
4# measuring point is center measuring point.
Pouring layer internal temperature measuring point, which is vertically laid, lays surface layer, bottom and middle layer temperature point along cushion cap thickness direction,
Specific installation position is as follows:
(1) apart from the concrete upper surface position 5cm, for measuring surface layer pouring layer temperature；
(2) concrete center, for measuring the central temperature of middle layer pouring layer；
(3) apart from the position concrete bottom 5cm, for measuring the temperature of bottom pouring layer.
Fig. 2 is bottom pouring layer, the vertical layout diagram of middle layer pouring layer internal temperature measuring point.
Fig. 3 is the vertical layout diagram of surface layer pouring layer internal temperature measuring point.
The present invention also needs to supervise concrete external temperature in real time in addition to carrying out real-time monitoring to concrete internal temperature
It surveys, the specific installation position of temperature point is as follows when real-time monitoring:
(1) 2 temperature sensors are laid in air, for measuring environment temperature；
(2) 2 temperature sensors are laid under insulating layer；
(3) 2 temperature sensors are laid in reservoir, for measuring reservoir water inlet temperature.
The real-time monitoring of the above-mentioned temperature of the present invention is carried out by temperature monitoring system, and temperature monitoring system is calculated by user
Machine, computer terminal monitoring of software, data adapter unit (power-supply system, data transmit-receive) and power transmission line, on-site data gathering device,
Data line and sensor composition, the concrete operating principle of the temperature monitoring system is not added herein and repeats, can adopt
Existed with the difference compared to existing temperature monitoring system of temperature monitoring system existing in reality, the temperature monitoring system
In the distribution mode of temperature sensor.
Shown in Figure 4, the present invention leads to cooling water and carries out internal cooling using water cooling system, and water cooling system is by water storage
Case, water pump, hose, water segregator and several cooling water pipes composition；Water pump is arranged in water tank, and water pump passes through hose and Fen Shui
The input end of device connects, and the outlet end of water segregator is connect by cooling water pipe with water tank.
Water segregator of the present invention is split into 5-7 tributary, and each self installation one of each tributary switchs and flowmeter, controls tributary
Water yield, each tributary is connected with a water inlet, and the water of water outlet is recycled into water tank, completes entire circulation；Wherein
The capacity of water tank need to be greater than 10m3, the pumpability of water pump need to be greater than 30m3/ h, the range of flowmeter are 0-10m3/h。
It is shown in Figure 5,2 layers of cooling water pipe are laid inside each pouring layer of the present invention, amounts to and lays 6 layers of cooling water pipe,
Cooling water pipe is vertically laid.
It is 1-6 layers of cooling water pipe horizontal layout figure referring to shown in Fig. 6 to Fig. 8.
Entery and delivery port of the Fig. 6 into Fig. 8 is connected steel pipe straight up by bend connector, and water inlet is by hose and Fen Shui
Device water outlet is connected, and exit cooling water is flowed into water tank by hose by water outlet.
(3) insulated curing
After concreting, water storage and thermal insulation maintenance or covering and heat insulating moisturizing material insulated curing are taken.
The present invention leads to cooling water progress internal cooling, and specific step is as follows:
(1) arrange water composite cooling pipe road according to design drawing, and it is firm to be fixed, when cooling water pipe is installed, with framework of steel reinforcement or
Sub-truss is fixed, prevents water pipe deformation or Joint's falling off during filling concrete and water blockoff or leak occurs；Stringing
When, water pipe will be staggered with cushion cap main reinforcement, can appropriate shift position when local pipeline section, which is staggered, has any problem.
(2) packer permeability test should be carried out before cooling water pipe use, prevented pipe leakage, blocked water；Every layer of circulating cooling water pipe quilt
After concrete is covered and is vibrated, can the water flowing in this layer of water pipe, circulating cooling pipe discharge water can be discharged outside cofferdam or
It drains into reservoir, after cushion cap concreting all terminates concrete surface layer initial set, the water of cooling tube water outlet can be arranged
To top of concrete, the water storage and thermal insulation layer (i.e. water storage and thermal insulation maintenance) of (25-30) cm high is formed.
(3) before concreting, cooling water should be filled in advance in cooling water pipe.
(4) by control cooling system import and export water flow size, control concrete cooling process, cooling water pipe into and out of
The temperature difference of saliva is preferably 3-6 DEG C, and inside concrete rate of temperature fall is preferably 2 DEG C/d.Flow of inlet water in each circuit, can be used flowmeter
Control.So that the difference of inflow temperature and concrete central temperature is maintained at (15-25) DEG C by adjusting flow of inlet water, prevents because of cooling
The too low generation cooling tube surrounding concrete contraction fissure of coolant-temperature gage.
(5) when concrete central temperature and skin temperature difference are less than 25 DEG C, water cooling operations can be suspended, to concrete
When central temperature is increased to skin temperature difference greater than 25 DEG C, water cooling system is restarted.
(6) after cooling, mud jacking closure should be carried out to cooling water pipe in time, press mortar uses same strength grade
Cement mortar, after mortar hardening, dismantling concrete structural outer for cooling all pipelines and accessory.
(7) concrete should keep wet in surface during water is cooling, and thermal insulation material covering should meet concrete Biao Liwen
Requirement (i.e. water storage and thermal insulation maintenance) of the difference less than 25 DEG C.
(8) if remaining same flow direction, after cooling, the concrete temperature of outlet end will be above the mixed of input end
Solidifying soil temperature degree, at the end of making cooling, concrete temperature is uniform as far as possible, in cooling procedure, should constantly change the direction of a stream of water,
It is preferably changed once a day water (flow) direction, forces down the heat of hydration temperature rise on cross sections as far as possible.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of main pier bearing platform construction technology, which is characterized in that the construction technology includes the following steps:
(1) main pier bearing platform is poured in three times
A, concrete base is poured；
B, concrete middle layer is poured；
C, concrete upper layer is poured；
Lift height when above-mentioned casting is 30-50cm, and middle layer and upper layer pour before need to the concrete poured into
Row dabbing and cleaning；
(2) temperature-control construction
It is included in above-mentioned concreting process three times and real-time monitoring and concreting is carried out to concrete internal temperature
Logical cooling water carries out internal cooling in time afterwards；
(3) insulated curing
After concreting, water storage and thermal insulation maintenance or covering and heat insulating moisturizing material insulated curing are taken.
2. a kind of main pier bearing platform construction technology according to claim 1, which is characterized in that the proportion of each raw material in concrete
Are as follows: cement 215kg/m3, 82 kg/m of flyash3, 33 kg/m of miberal powder3, 724 kg/m of sand3, 1181 kg/m of rubble3, water 165
kg/m3, 3.3 kg/m of water-reducing agent3。
3. a kind of main pier bearing platform construction technology according to claim 1, which is characterized in that in concrete in step (2)
It includes that temperature point is laid that portion's temperature, which carries out real-time monitoring, and measuring point is laid before concreting.
4. a kind of main pier bearing platform construction technology according to claim 3, which is characterized in that cushion cap temperature point horizontal layout
It is test section according to half axis of the cushion cap plane axis of symmetry, in test section, monitoring point is arranged by planar layer, level side
To 7 temperature points of every layer of laying, 7 temperature points are respectively 1-7# measuring point, and wherein 1# and 7# measuring point is surface layer measuring point, 2-
3#, 5-6# measuring point are internal measuring point, and 4# measuring point is center measuring point.
5. a kind of main pier bearing platform construction technology according to claim 3, which is characterized in that pouring layer internal temperature measuring point is perpendicular
It is as follows along cushion cap thickness direction laying surface layer, bottom and middle layer temperature point, specific installation position to laying:
(1) apart from the concrete upper surface position 5cm；
(2) concrete center；
(3) apart from the position concrete bottom 5cm.
6. a kind of main pier bearing platform construction technology according to claim 1, which is characterized in that in addition to coagulation in step (2)
Native internal temperature, which carries out real-time monitoring, also to be needed to carry out concrete external temperature real-time monitoring, and temperature point is specific when real-time monitoring
Installation position is as follows:
(1) 2 temperature sensors are laid in air；
(2) 2 temperature sensors are laid under insulating layer；
(3) 2 temperature sensors are laid in reservoir.
7. a kind of main pier bearing platform construction technology according to claim 1, which is characterized in that logical cooling water carries out internal cooling
Using water cooling system, water cooling system is made of water tank, water pump, hose, water segregator and several cooling water pipes；Water pump is set
It sets in water tank, water pump is connected by the input end of hose and water segregator, and the outlet end of water segregator passes through cooling water pipe and storage
Water tank connection.
8. a kind of main pier bearing platform construction technology according to claim 1, which is characterized in that concrete base pouring layer mixes
Solidifying soil middle layer pouring layer is identical cylindrical body, and concrete surface layer pouring layer is the rotary table of variable cross-section, cloth inside each pouring layer
If at least 2 layers of cooling water pipe, total at least 6 layers of cooling water pipe, cooling water pipe of laying vertically is laid.
9. a kind of main pier bearing platform construction technology according to claim 1, which is characterized in that logical cooling water carries out internal cooling
Specific step is as follows:
(1) water composite cooling pipe road is arranged:
Fixed with framework of steel reinforcement or sub-truss when cooling water pipe is installed, when stringing, cooling water pipe will be with the main steel of cushion cap
Cross dystopia of muscle and tendon is opened；
(2) cooling water pipe uses preceding carry out packer permeability test:
(3) before concreting, cooling water is filled in advance in cooling water pipe；
(4) inflow temperature and the difference of concrete central temperature is made to be maintained at 15-25 DEG C by adjusting flow of inlet water, when in concrete
When heart temperature and skin temperature difference are less than 25 DEG C, suspend water cooling operations, is increased to concrete central temperature and skin temperature
When difference is greater than 25 DEG C, water cooling system is restarted；
(5) after cooling, mud jacking closure is carried out to cooling water pipe in time.
10. a kind of main pier bearing platform construction technology according to claim 1, which is characterized in that water storage and thermal insulation maintenance is mixed
Solidifying soil top surface forms the water storage and thermal insulation layer of 25-30cm high, and covering and heat insulating moisturizing material insulated curing is the temperature difference in concrete table
It is carried out when less than 25 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644363A (en) * | 2019-06-24 | 2020-01-03 | 高军 | Construction method of underwater main tower of cross-river cable-stayed bridge of high-speed railway |
| CN112457051A (en) * | 2020-11-27 | 2021-03-09 | 中冶建工集团有限公司 | Mass concrete construction process for preventing mass concrete from cracking |
| CN112726421A (en) * | 2021-01-20 | 2021-04-30 | 中交三公局桥梁隧道工程有限公司 | Construction process of bridge pier bearing platform |
| CN113235451A (en) * | 2021-06-10 | 2021-08-10 | 惠州晖华混凝土有限公司 | Construction method of mass concrete |
| CN116145963A (en) * | 2023-03-07 | 2023-05-23 | 甘肃建投建设有限公司 | Unattended intelligent concrete curing system and concrete pouring method |
| CN116813378A (en) * | 2023-08-31 | 2023-09-29 | 保利长大工程有限公司 | Rapid curing method for large-volume ultra-high-performance concrete |
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| CN112726421A (en) * | 2021-01-20 | 2021-04-30 | 中交三公局桥梁隧道工程有限公司 | Construction process of bridge pier bearing platform |
| CN113235451A (en) * | 2021-06-10 | 2021-08-10 | 惠州晖华混凝土有限公司 | Construction method of mass concrete |
| CN116145963A (en) * | 2023-03-07 | 2023-05-23 | 甘肃建投建设有限公司 | Unattended intelligent concrete curing system and concrete pouring method |
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