CN107338966A - Large volume ultra-long concrete teletostage jointless construction conserves structure and construction and maintenance method - Google Patents
Large volume ultra-long concrete teletostage jointless construction conserves structure and construction and maintenance method Download PDFInfo
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- CN107338966A CN107338966A CN201710610927.0A CN201710610927A CN107338966A CN 107338966 A CN107338966 A CN 107338966A CN 201710610927 A CN201710610927 A CN 201710610927A CN 107338966 A CN107338966 A CN 107338966A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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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
Abstract
The present invention provides a kind of large volume ultra-long concrete teletostage jointless construction maintenance structure and construction and maintenance method, including：The concrete component that section construction is formed, and be spaced apart of each section concrete component forms banding casting space；Expansion reinforcing band, pour and be formed at the banding casting space, cracking resistance reinforcing bar is provided with the expansion reinforcing band；The concrete component and the expansion reinforcing band is made to collectively form architectural construction, the pre-formed heating space in the architectural construction inside, described heat is provided with heating and heat-insulating device, heating and humidifying device is provided with outside the architectural construction in space.The present invention by by anti-crack fiber concrete, expansion reinforcing band and the comprehensive thermos method integrated application that is made up of heating and heat-insulating device, heating and humidifying device in teletostage jointless construction, the jointless construction quality of large volume Overlong Concrete Structure is set to have reached design and code requirement, ensure the construction quality under concrete structure winter construction environment, structure is integrally reached seamless remarkable result.
Description
Technical field
The present invention relates to large volume super-long structural technical field of concrete construction, relate in particular in the teletostage to concrete
Jointless construction carries out the constructing structure and method of control and the concrete strength guarantee of thermal cracking.
Background technology
China《Mass concrete construction specification》Provided in GB50496-2012：Concrete structure entity minimum geometry
Size is not less than 1m big scale of construction concrete, or is expected to temperature change and contraction caused by binder materials aquation in concrete
And cause concrete caused by harmful cracks, referred to as mass concrete.
Often it is related to mass concrete construction in modern architecture, such as high-rise building basis, large equipment base, water conservancy
Dam etc..Mass concrete is mainly characterized by that volume is big, and general entity minimum dimension is more than or equal to 1m.Large volume is mixed
It is smaller to coagulate the surface coefficient of soil, concentration is compared in hydration heat of cement release, and inside heating is than very fast；It is therefore warm inside and outside concrete
When difference is larger, concrete can be made to produce thermal cracking, influence structure safety and normal use, and then must fundamentally analyzed big
Volume concrete, to ensure the quality of construction.
Large volume concrete structural is abundant, and amount of concrete is big, and complicated engineering specifications (is typically all underground cast-in-place reinforced concrete
Soil structure), construction technical requirement is high, and hydration heat of cement is larger (it is expected that more than 25 degree), works is produced temperature deformation.Greatly
Volume concrete also has certain limitations in addition to minimum cross section and internal and external temperature have certain regulation, to planar dimension.It is because flat
Face is oversized, and TEMPERATURE FORCE caused by effect of contraction is also bigger, such as takes control temperature steps improper, and temperature stress, which exceedes, mixes
During the pulling force limiting value that solidifying soil can bear, then crack is also easy to produce.
It is worth noting that, in such as the Northeast's teletostage low temperature can reach subzero 20 degree of construction environment, it is more difficult to
Temperature is controlled to avoid distress in concrete from producing, so as to which the seamless winter construction of large volume ultra-long concrete also has a series of technology
Problem needs to solve.
The content of the invention
In view of the foregoing, the present invention provides a kind of large volume ultra-long concrete teletostage jointless construction maintenance structure and construction
Maintenance process, to ensure the construction quality under large volume over-long reinforced concrete structure winter construction environment, structure is set integrally to reach
To seamless remarkable result.
To achieve the above object, the present invention adopts the technical scheme that a kind of offer large volume ultra-long concrete teletostage is seamless
Construction and maintenance structure, including：Concrete component, section construction are formed, and be spaced apart of each section concrete component forms banding and poured
Note space；Expansion reinforcing band, pour and be formed at the banding casting space, cracking resistance reinforcing bar is provided with the expansion reinforcing band；Order
The concrete component and the expansion reinforcing band collectively form architectural construction, and pre-formed heating is empty inside the architectural construction
Between, heating and heat-insulating device is provided with the heating space, heating and humidifying device is provided with outside the architectural construction.
In the constructive embodiment of the present invention, the cast binder materials of the concrete component and the expansion reinforcing band is all wrapped
Include slightly expanded concrete and anti-crack fiber waterproofing agent；Wherein, the anti-crack fiber waterproofing agent volume of the concrete component is composition
The 8%~10% of the slightly expanded concrete weight of the concrete component；The anti-crack fiber waterproofing agent of the expansion reinforcing band is mixed
Measure to form the 10%~12% of the slightly expanded concrete weight of the expansion reinforcing band.
In the constructive embodiment of the present invention, the heating and heat-insulating device includes electric tracing, thermal insulating material and plastic sheeting；Its
In, a part is provided with the electric tracing and covers the thermal insulating material outside the architectural construction, and another part is provided with the plastics
Film simultaneously covers the thermal insulating material.
In the constructive embodiment of the present invention, the heating and humidifying device includes coke-fired furnace and is installed on above the coke-fired furnace
Water container.
In the constructive embodiment of the present invention, every segment length of the concrete component is 35 to 45m.
The present invention separately provides a kind of large volume ultra-long concrete teletostage jointless construction maintenance process, the construction and maintenance structure
Including architectural construction and located at its outside heating and heat-insulating device and the heating and humidifying device located at its inside；The building structure
Make including concrete component and expansion reinforcing band, be provided with member reinforcing steel bar inside the concrete component, in the expansion reinforcing band
Portion is provided with cracking resistance reinforcing bar；Wherein, the construction and maintenance method：
Member reinforcing steel bar described in colligation and the cracking resistance reinforcing bar；
After formwork erection, the electric tracing of heating and heat-insulating device is set；
Successively casting concrete adjacent to member reinforcing steel bar regional extent forms the concrete component, the concrete structure
Heating space is formed through preset structure inside part, and be spaced apart of adjacent concrete component forms banding casting space, it is described anti-
Reinforcing bar is split to be located in the banding casting space；
After the completion of the concrete component of adjacent construction section pours, before the latter construction section concrete component initial set, to institute
Stating banding casting space casting concrete and forming the inside has the expansion reinforcing band of cracking resistance reinforcing bar；
After concreting, the electric tracing is set to be powered to be heated, and covering includes modeling outside architectural construction
Expect the heating and heat-insulating device of film and/or thermal insulating material；
After the completion of concreting, heating and humidifying device is set in the heating space of the concrete component, with
Concrete component inside continuous heating is humidified during maintenance；
Carry out the concrete curing age no less than 14 days.
In the embodiment of the method for the present invention, the cast binder materials of the concrete component includes slightly expanded concrete and resisted
Split fiber waterproofing agent；The volume of the anti-crack fiber waterproofing agent is the 8%~10% of the weight of the slightly expanded concrete；It is described
The cast binder materials of expansion reinforcing band includes slightly expanded concrete and anti-crack fiber waterproofing agent；The anti-crack fiber waterproofing agent
Volume is the 10%~12% of the weight of the slightly expanded concrete.
In the embodiment of the method for the present invention, the method to set up of the heating and heat-insulating device includes：By plastic sheeting and insulation
Material is stacked outside architectural construction, and is preferentially set with plastic sheeting and realized effective accumulation of heat, then sets thermal insulating material further
Improve heat insulation effect；And/or thermal insulating material covering is arranged at outside electric tracing, the heat energy that electric tracing provides effectively is incubated.
In the embodiment of the method for the present invention, the heating space passes through the top board structure in architectural construction and adjacent construction section
Before concreting, hole and open section are blocked using fire prevention cotton-wadded quilt in advance, form the heating space, institute
State architectural construction and certain amount fire escape and ventilation mouth are set according to physical dimension；The heating and humidifying device includes coke-fired furnace
And water container；The heating and humidifying device is transported to finger after architectural construction forms the heating space by the fire escape
Positioning is put；Humidification water is delivered in the water container using water injection pipe connection；The concrete component is made to pass through the coke
Stove heats keeping temperature from inside, and carries out heating generation vapor to the water of the water container, keeps inside concrete component
Humidity.
In the embodiment of the method for the present invention, before concrete reaches at least 14 days curing ages, it can be covered using thick perlite
Architectural construction top board structure is placed on to be incubated.
The present invention makes it have following beneficial effect as a result of above technical scheme：
The present invention is by by anti-crack fiber concrete, expansion reinforcing band and by heating and heat-insulating device, heating and humidifying device
The comprehensive thermos method integrated application of composition reaches the jointless construction quality of large volume Overlong Concrete Structure in teletostage jointless construction
Design and code requirement are arrived.Protected in addition, winter construction strength grade of concrete and concrete curing condition are construction qualities
An important factor for barrier, and concrete curing measure is to ensure a key technology of concrete component jointless construction, by this hair
Bright middle proposition carries out continuous heating by architectural construction inside, humidifies and stored by the synthesis of external heat and effectively thermal isolation and heat storage
Hot method, with easy device, reach in winter construction temperature in the case of subzero 20 degree, there is provided a kind of simple but excellent effect
Laser heating, humidification and Insulation, so as to ensure the temperature and humidity needed for concrete curing；It is finally many in curing period
Under the curing age of 14 days, it is ensured that the large volume over-long reinforced concrete structure does not have crack, and concrete strength etc.
Level meets the technique effect of design requirement.
Brief description of the drawings
Fig. 1 is the concrete component of large volume ultra-long concrete of the present invention and structural representation after expansion reinforcing band shaping.
Fig. 2 is the assembling reinforcement point of concrete component and its member reinforcing steel bar of the present invention, expansion reinforcing band and its cracking resistance reinforcing bar
Cloth structural representation.
Fig. 3 is set-up mode schematic diagram of the heating and heat-insulating device of the present invention outside architectural construction.
Fig. 4 is the structural representation of heating and humidifying device of the present invention.
The corresponding relation of reference and part is as follows：
Concrete component 10；First concrete component 101；Second concrete component 102；Member reinforcing steel bar 11；Expansion is strengthened
Band 20；Cracking resistance reinforcing bar 21；Heating and heat-insulating device 30；Electric tracing 31；Thermal insulating material 32；Plastic sheeting 33；Heating and humidifying device 40；It is burnt
Charcoal stove 41；Feeding port 411；Water container 42；Water injection pipe 421；Architectural construction 100.
Embodiment
For the benefit of to the understanding of the present invention, illustrated below in conjunction with drawings and Examples.
Fig. 1 to Fig. 3 is referred to, the present invention provides a kind of large volume ultra-long concrete teletostage jointless construction maintenance structure and applied
Work maintenance process, its construction and maintenance structure include concrete component 10, expansion reinforcing band 20, heating and heat-insulating device 30 and heating and increased
Wet device 40.Wherein：
As shown in Figure 1 and Figure 2, the concrete component 10 is formed by section construction, and between each section concrete component 10
Separate to form banding casting space.Specifically, the concrete component 10 includes concrete and its member reinforcing steel bar 11 of inside, institute
It is that advance colligation is formed to state member reinforcing steel bar 11, through being collectively forming the concrete component 10 after concrete is poured into a mould.It is in addition, described
The length of concrete component 10 is preferably 35 to 45m.
In the embodiment of the present invention, the cast binder materials of the concrete component 10 includes slightly expanded concrete and cracking resistance
Fiber waterproofing agent；The volume of the anti-crack fiber waterproofing agent is the 8% of the weight of the slightly expanded concrete.Wherein, it is described anti-
Commercially available SY-K anti-crack fiber waterproofing agents can be used by splitting fiber waterproofing agent.
As shown in Figure 1 and Figure 2, the expansion reinforcing band 20, which pours, is formed at the banding casting space, and the expansion is strengthened
Cracking resistance reinforcing bar 21 is provided with band 20, width of the cracking resistance reinforcing bar 21 along the expansion reinforcing band 20 sets and mixed with described
Advance colligation is formed the member reinforcing steel bar 11 of solidifying native component 10 together；As shown in figure 1, the concrete component 10 of adjacent construction section is according to pouring
Note order is defined as the first concrete component 101 and the second concrete component 102, and the expansion reinforcing band 20 is being specifically the
It is mixed through pouring into a mould after the completion of one concrete component 101 and the second concrete component 102, and before the initial set of the second concrete component 102
Solidifying soil is collectively forming the expansion reinforcing band 20 after cracking resistance reinforcing bar 21.In addition, as shown in figure 1, the expansion reinforcing band 20 passes through
The length interval of the concrete component 10, preferably it is arranged at intervals with 35 to 45m distance.
In the embodiment of the present invention, the cast binder materials of the expansion reinforcing band 20 includes slightly expanded concrete and cracking resistance
Fiber waterproofing agent；The volume of the anti-crack fiber waterproofing agent is the 10% of the weight of the slightly expanded concrete.Wherein, it is described anti-
Commercially available SY-K anti-crack fiber waterproofing agents can be used by splitting fiber waterproofing agent.
As shown in Figure 1, Figure 3, the concrete component 10 and the expansion reinforcing band 20 are collectively formed after the completion of pouring and built
Build construction 100.The architectural construction 100 can be beam, plate or the wall construction of building.The present invention to architectural construction 100 by entering
Row comprehensive thermos method, persistently to carry out local heating and insulation to the heating of the inside of architectural construction 100, humidification, and to outside.
As shown in figure 3, thermal storage equipment includes heating and heat-insulating device 30 and heating and humidifying device 40, it is respectively used for setting and is building
The outside of construction 100 and inside are built, to be heated during concrete curing to architectural construction 100, is protected by controlling temperature
Card concrete reaches design strength grade, and meets the crack code requirement of concrete.
As shown in figure 3, the heating and heat-insulating device 30 is located at the outside of the architectural construction 100, the heating and thermal insulation dress
Putting 30 includes electric tracing 31, thermal insulating material 32 and plastic sheeting 33.Wherein, the electric tracing 31 is to supporting in architectural construction 100
Controlled during shield and maintain the temperature of concrete.The electric tracing 31 after the completion of the cast template of architectural construction 100 installs, with
Interval 200mm distance is wound on outside architectural construction 100.Specifically, the temperature controlling range of the electric tracing 31 compared with
Good is 20 ± 2 DEG C.The thermal insulating material 32 and the plastic sheeting 33 are to be covered in the surface of architectural construction 100, to delay
Aquation heat leakage speed caused by concrete.The plastic sheeting 33 is first covered in the surface of architectural construction 100, with special using plastics
Property is effectively accumulated the heat of hydration among architectural construction 100, and the thermal insulating material 32 is covered on plastic sheeting 33, to play into one
Step delay heat scatter and disappear enter rate, play good heat insulation effect.In the embodiment of the present invention, the thermal insulating material 32 can use
Cotton-wadded quilt, and double-deck cotton-wadded quilt is preferably set, to improve heat insulation effect.
In addition, under the conditions of place external environment condition is less than the subzero temperature of zero degree, reaches 14 days in the concrete of architectural construction 100 and support
It before the length of service as a nurse phase, can also be further covered on the top surface of architectural construction 100, realized better using 600mm thick perlite
Heat insulation effect.Removed more specifically, the thermal insulating material 32 and perlite preferably release winter construction recession in next year.
Such as Fig. 4, the inside of the architectural construction 100 is formed with heating space 200, is provided with and adds in the heating space 200
Hot humidifying device 40, the heating and humidifying device 40 include coke-fired furnace 41 and are installed on the water container of the top of coke-fired furnace 41
42；The coke-fired furnace 41 to the inside continuous heating of architectural construction 100, the water container 42 passing through located at the coke-fired furnace 41
Top, vapor is produced using the heat using coke-fired furnace 41 for the water heating in water container 42, inside regulation architectural construction 100 and
Humidity, concrete curing effect is improved, prevents internal-external temperature difference from causing crack to produce.
Specifically, as shown in figure 4, the side of the coke-fired furnace 41 is provided with feeding port 411, to filling continuous heating；It is described
The side of water container 42 is provided with the water injection pipe 421 that the external connection of self-heating space 200 enters, to add water to maintain water container 42
Water, keep the humidity in heating space 200.In addition, in the embodiment of the present invention, the coke-fired furnace 41 can be opened by iron sheet barrel
Mouth is formed after forming the feeding port 411.The specific implementation aspect of construction and maintenance structure of the present invention is explained above, please be answer below
Cooperation refers to Fig. 1 to Fig. 4, illustrates the construction and maintenance side of large volume ultra-long concrete teletostage jointless construction maintenance structure of the present invention
Method.
As it was previously stated, the construction and maintenance structure includes architectural construction 100 and located at its outside heating and heat-insulating device
30 heating and humidifying devices 40 internal with being located at it；The architectural construction 100 includes concrete component 10 and expansion reinforcing band 20,
The inside of concrete component 10 is provided with member reinforcing steel bar 11, and the inside of expansion reinforcing band 20 is provided with cracking resistance reinforcing bar 21；Wherein, institute
The step of stating method includes：
Step A：Binding structural member reinforcing bar 11 and cracking resistance reinforcing bar 21.
Step B：After formwork erection, the electric tracing 31 of heating and heat-insulating device 30 is set；Specifically, the electric tracing 31 compared with
It is good to be configured with 200mm spacing distance.
Step C：The concrete component 10, institute are formed to the adjacent successively casting concrete of the regional extent of member reinforcing steel bar 11
State and form heating space 200 through preset structure inside concrete component 10, and be spaced apart of adjacent concrete component 10 forms band
Shape casting space, the cracking resistance reinforcing bar 21 are located in the banding casting space；Specifically, the cast of the concrete component 10
Binder materials includes slightly expanded concrete and anti-crack fiber waterproofing agent；The volume of the anti-crack fiber waterproofing agent is the microdilatancy
The 8% of the weight of concrete.
In the embodiment of the present invention, the heating space 200 passes through the top board structure in architectural construction 100 and adjacent construction
Hole and open section are blocked before concreting, form the heating space by section using fire prevention cotton-wadded quilt in advance
200, the architectural construction 100 sets certain amount fire escape and ventilation mouth according to physical dimension.
Step D：After the completion of the concrete component 10 of adjacent construction section pours, at the beginning of the latter construction section concrete component 10
Before solidifying, forming the inside to the banding casting space casting concrete has the expansion reinforcing band 20 of cracking resistance reinforcing bar 21；Tool
Body, the cast binder materials of the expansion reinforcing band 20 includes slightly expanded concrete and anti-crack fiber waterproofing agent；The cracking resistance
The volume of fiber waterproofing agent is the 10% of the weight of the slightly expanded concrete.
Step E：After concreting, the electric tracing 31 is set to be powered to be heated, and outside architectural construction 100
Covering includes the heating and heat-insulating device 30 of plastic sheeting 33 and/or thermal insulating material 32.
Specifically, the electric tracing 31, plastic sheeting 33 and thermal insulating material 32 can with as shown in figure 3, by plastic sheeting 33 and
Thermal insulating material 32 is stacked outside architectural construction 100, and is preferentially set with plastic sheeting 33 and realized effective accumulation of heat, then sets guarantor
Warm material 32 further improves heat insulation effect；Or thermal insulating material 32 is arranged at outside electric tracing 31, the heat that electric tracing 31 is provided
Can effectively it be incubated, it is not easy to lose.In the embodiment of the present invention, the temperature preferably control of the electric tracing 31 is at 20 ± 2 DEG C；Institute
It is that cotton-wadded quilt can be selected to state thermal insulating material 32, and preferably bilayer, but be not limited to this.
Step E：After the completion of concreting, heating is set to increase in the heating space 200 of the concrete component 10
Wet device 40, to be humidified during maintenance to the inside continuous heating of concrete component 10；Specifically, the heating and humidifying device 40
Including coke-fired furnace 41 and water container 42, the concrete component 10 heats keeping temperature by the coke-fired furnace 41 from inside, and
Heating generation vapor is carried out to the water of the water container 42, keeps the interior humidity of concrete component 10.
Specifically, the heating and humidifying device 40 includes coke-fired furnace 41 and water container 42；The heating and humidifying device 40 exists
After architectural construction 100 forms the heating space 200, specified location is transported to by the fire escape；Humidification is with water using note
The connection of water pipe 421 is delivered in the water container 42；The concrete component 10 is made to be heated by the coke-fired furnace 41 from inside
Keeping temperature, and heating generation vapor is carried out to the water of the water container 42, keep the interior humidity of concrete component 10.
In the step E, the thickness of the anti-guncotton is preferably 4 ± 2cm, but is not limited to this, visual practice of construction
Demand is adjusted.Additionally it is preferred that being scattered and disappeared to prevent from heating the heat in space 200, can be spaced at the fire escape
1 meter of distance sets two layers of door curtain.
Step F：Carry out the concrete curing age no less than 14 days；Specifically, during maintenance, the thermal insulating material 32 in
Do not removed under the conditions of subzero temperature；In addition, before concrete reaches at least 14 days curing ages, building can be covered in using thick perlite
100 top board structures are constructed to be incubated；The perlite thickness is preferably 600mm.In the embodiment of the present invention, thermal insulating material 32 with
Thick perlite preferably releases winter construction recession in next year and removed.
Additionally it is preferred that during field conduct of the present invention, insulation material needed for each construction section, institute are preferably got out in advance
Electric tracing 31 is stated can to start to carry out heating and thermal insulation to concrete component 10, so that concrete structure is got over before concreting
Winter safeguards and completed in time.
To sum up, large volume ultra-long concrete teletostage jointless construction of the present invention maintenance structure and construction and maintenance method, by
On Overlong Concrete Structure length direction, expansion reinforcing band is set with the distance at 35 to 45 meters of interval, and in form beam,
Plate, wall construction main body concrete component 10 in use 8% anti-crack fiber waterproofing agent, it is anti-using 10% in the expansion reinforcing band 20
Fiber waterproofing agent is split, and increases cracking resistance reinforcing bar 21 on the width of expansion reinforcing band 20, with reference to comprehensive thermos method, using double
Layer cotton-wadded quilt covering and heat insulating, the heating of inside configuration coke stove and electric tracing winding concrete component heating means, realize coagulation
Temperature and humidity needed for soil maintenance, so as to after above complex art is taken, realize under the Northeast's winter construction environment substantially
Product Overlong Concrete Structure jointless construction, meet that design strength grade, thermal cracking meet design and code requirement.
The present invention is described in detail above in association with drawings and Examples, those skilled in the art can basis
Described above makes many variations example to the present invention.Thus, some details in embodiment should not form limitation of the invention,
The present invention will be used as protection scope of the present invention using the scope that appended claims define.
Claims (10)
1. a kind of large volume ultra-long concrete teletostage jointless construction conserves structure, it is characterised in that including：
Concrete component, section construction are formed, and be spaced apart of each section concrete component forms banding casting space；
Expansion reinforcing band, pour and be formed at the banding casting space, cracking resistance reinforcing bar is provided with the expansion reinforcing band；
The concrete component and the expansion reinforcing band is made to collectively form architectural construction, the architectural construction inside is pre-formed to be added
Heat space, described heat are provided with heating and heat-insulating device, heating and humidifying device are provided with outside the architectural construction in space.
2. large volume ultra-long concrete teletostage jointless construction according to claim 1 conserves structure, it is characterised in that：
The cast binder materials of the concrete component and the expansion reinforcing band all includes slightly expanded concrete and anti-crack fiber
Waterproofing agent；Wherein,
The anti-crack fiber waterproofing agent volume of the concrete component is the slightly expanded concrete weight for forming the concrete component
8%~10%；
The anti-crack fiber waterproofing agent volume of the expansion reinforcing band is the slightly expanded concrete weight for forming the expansion reinforcing band
10%~12%.
3. large volume ultra-long concrete teletostage jointless construction according to claim 1 conserves structure, it is characterised in that：
The heating and heat-insulating device includes electric tracing, thermal insulating material and plastic sheeting；Wherein, a part is set outside the architectural construction
There is the electric tracing and cover the thermal insulating material, another part is provided with the plastic sheeting and covers the thermal insulating material.
4. large volume ultra-long concrete teletostage jointless construction according to claim 1 conserves structure, it is characterised in that：
The heating and humidifying device includes coke-fired furnace and the water container being installed on above the coke-fired furnace.
5. large volume ultra-long concrete teletostage jointless construction according to any one of claim 1 to 4 conserves structure, it is special
Sign is：
Every segment length of the concrete component is 35 to 45m.
A kind of 6. large volume ultra-long concrete teletostage jointless construction maintenance process, it is characterised in that the construction and maintenance structure bag
Include architectural construction and located at its outside heating and heat-insulating device and the heating and humidifying device located at its inside；The architectural construction
Including concrete component and expansion reinforcing band, member reinforcing steel bar is provided with inside the concrete component, inside the expansion reinforcing band
Provided with cracking resistance reinforcing bar；Wherein, the construction and maintenance method：
Member reinforcing steel bar described in colligation and the cracking resistance reinforcing bar；
After formwork erection, the electric tracing of heating and heat-insulating device is set；
Successively casting concrete adjacent to member reinforcing steel bar regional extent forms the concrete component, in the concrete component
Portion forms heating space through preset structure, and be spaced apart of adjacent concrete component forms banding casting space, the cracking resistance steel
Muscle is located in the banding casting space；
After the completion of the concrete component of adjacent construction section pours, before the latter construction section concrete component initial set, to the band
Shape casting space casting concrete, which forms the inside, has the expansion reinforcing band of cracking resistance reinforcing bar；
After concreting, the electric tracing is set to be powered to be heated, and to include plastics thin for covering outside architectural construction
The heating and heat-insulating device of film and/or thermal insulating material；
After the completion of concreting, heating and humidifying device is set in the heating space of the concrete component, to conserve
Period is humidified to concrete component inside continuous heating；
Carry out the concrete curing age no less than 14 days.
7. large volume ultra-long concrete teletostage jointless construction maintenance process according to claim 6, it is characterised in that：
The cast binder materials of the concrete component includes slightly expanded concrete and anti-crack fiber waterproofing agent；The anti-crack fiber
The volume of waterproofing agent is the 8%~10% of the weight of the slightly expanded concrete；
The cast binder materials of the expansion reinforcing band includes slightly expanded concrete and anti-crack fiber waterproofing agent；The anti-crack fiber
The volume of waterproofing agent is the 10%~12% of the weight of the slightly expanded concrete.
8. large volume ultra-long concrete teletostage jointless construction maintenance process according to claim 6, it is characterised in that：
The method to set up of the heating and heat-insulating device includes：
Plastic sheeting and thermal insulating material are stacked outside architectural construction, and preferentially set realization effectively to store with plastic sheeting
Heat, then set thermal insulating material further to improve heat insulation effect；And/or thermal insulating material covering is arranged at outside electric tracing, make electric tracing
The heat energy of offer is effectively incubated.
9. large volume ultra-long concrete teletostage jointless construction maintenance process according to claim 6, it is characterised in that：
The heating space by before concreting, using in advance in the top board structure of architectural construction and adjacent construction section
Fire prevention cotton-wadded quilt is blocked hole and open section, forms the heating space, and the architectural construction is set according to physical dimension
Put certain amount fire escape and ventilation mouth；
The heating and humidifying device includes coke-fired furnace and water container；The heating and humidifying device forms the heating in architectural construction
Behind space, specified location is transported to by the fire escape；Humidification water is delivered in the water container using water injection pipe connection；
Make the concrete component heat keeping temperature from inside by the coke-fired furnace, and the water of the water container is added
Heat produces vapor, keeps concrete component interior humidity.
10. large volume ultra-long concrete teletostage jointless construction maintenance process according to claim 6, it is characterised in that：
Before concrete reaches at least 14 days curing ages, architectural construction top board structure can be covered in using thick perlite and be protected
Temperature.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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