CN108240038A - Super plane concrete structure and construction method based on multi-level network form post-cast strip - Google Patents
Super plane concrete structure and construction method based on multi-level network form post-cast strip Download PDFInfo
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- CN108240038A CN108240038A CN201810213996.2A CN201810213996A CN108240038A CN 108240038 A CN108240038 A CN 108240038A CN 201810213996 A CN201810213996 A CN 201810213996A CN 108240038 A CN108240038 A CN 108240038A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to big flat concrete technical field of structures, disclose a kind of super plane concrete structure and construction method based on multi-level network form post-cast strip.The present invention includes reinforced concrete structure and Construction Later Casting Zone, crisscross Construction Later Casting Zone is in net distribution, every Construction Later Casting Zone is set along the length or width direction of concrete structure, uniform intervals, further include structure post-cast strip, the crisscross structure post-cast strip is in net distribution, every structure post-cast strip is set along the length or width direction of concrete structure, uniform intervals, and the distance between adjacent structure post-cast strip is 130 160m.The present invention deforms the contraction or expansion of concrete structure adequately to be discharged, effectively avoid the deformation crack of super plane concrete structure.
Description
Technical field
The present invention relates to big flat concrete technical field of structures, and multi-level network form post-cast strip is based on more particularly to one kind
Super plane concrete structure and construction method.
Background technology
The type of distress in concrete mainly has：Settlement crack, deformation crack, comprehensive crack, expansion fissure and motional inertia
Crack.Wherein incidence of the concrete deformation crack in engineering reaches more than 80%, is the main original that concrete generates crack
Cause.And the producing cause of deformation crack is mainly that the deformation of concrete autogenous shrinkage, variation of ambient temperature and concrete itself are swollen
Bulging deformation mainly controls the curing temperature of concrete for the settling mode that crack is generated because of temperature change；And for coagulation
Crack caused by native self-deformation, settling mode mainly take Crack Resistance from material, change form of construction work, increase reinforcing bar
Dosage or setting post-cast strip.
According to existing concrete design specification, concrete structure needs to set permanent expansion joint to avoid contraction fissure
And Construction Later Casting Zone, Construction Later Casting Zone are a kind of temporary construction seams, are the improving technologies at permanent expansion joint, are to prevent overlength from building
Build the effective measures for being deformed crack.Reinforcing bar at existing conventional rear pouring tape construction method post-cast strip is all continuous, and is mixed
The contraction distortion of Xtah Crude Clay structure cannot freely be discharged, when the length or width of concrete structure are more than certain size,
Deformation crack is inevitable, and therefore, the size of concrete structure nevertheless suffers from larger limitation.
Invention content
The present invention, which provides, a kind of can deform the contraction or expansion of concrete structure adequately to be discharged, effectively avoided
The super plane concrete structure and construction method based on multi-level network form post-cast strip of the deformation crack of concrete structure.
The technical issues of solution is：Existing routine post empiricism is only capable of improving to a certain extent because concrete itself becomes
Distress in concrete caused by shape, since the reinforcing bar at post-cast strip is continual, the contraction distortion of concrete structure cannot obtain
It freely discharges, significantly limits the size of concrete structure.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
The present invention is based on the super plane concrete structure of multi-level network form post-cast strip, after reinforced concrete structure and construction
Band is poured, Construction Later Casting Zone is crisscross in net distribution, length or width of the every Construction Later Casting Zone along reinforced concrete structure
Direction, uniform intervals setting, it is characterised in that：Structure post-cast strip is further included, the crisscross structure post-cast strip is in netted point
Cloth, every structure post-cast strip are set along the length or width direction of reinforced concrete structure, uniform intervals, adjacent structure post-cast strip
The distance between be 130-160m.
The present invention is based on the super plane concrete structures of multi-level network form post-cast strip, further, the adjacent construction
The distance between post-cast strip is 30-50m, and the width of Construction Later Casting Zone is 0.8-1m.
The present invention is based on the super plane concrete structures of multi-level network form post-cast strip, further, are poured after the structure
The width of band is 4-6m.
The present invention is based on the super plane concrete structures of multi-level network form post-cast strip, further, are poured after the construction
Reinforcing bar inside reinforced concrete structure with side passes perpendicularly through the reinforced concrete structure that Construction Later Casting Zone stretches into opposite side
Inside, it is continuous uninterrupted.
The present invention is based on the super plane concrete structures of multi-level network form post-cast strip, further, are poured after the construction
With being provided with steel plate water stopper and/or external labeling type waterstop between two side elevations and adjacent reinforced concrete structure.
The present invention is based on the super plane concrete structures of multi-level network form post-cast strip, further, are poured after the structure
Band inner portion layer is provided with connection reinforcing bar, and connection reinforcing bar both ends are reserved respectively with corresponding in the reinforced concrete structure of both sides
Connector connects.
The present invention is based on the super plane concrete structures of multi-level network form post-cast strip, and further, every layer of reinforcing bar is opposite
The reserved connector answered is respectively bar dowel connector and long splice, and the length of bar dowel connector is not less than 500mm.
The present invention is based on the super plane concrete structures of multi-level network form post-cast strip, further, are mixed per side reinforcing bar
Bar dowel connector and long splice on Xtah Crude Clay structure is staggered in the vertical direction, every connection reinforcing bar both ends respectively with
Bar dowel connector is connected with long splice.
The present invention is based on the super plane concrete structures of multi-level network form post-cast strip, further, are poured after the structure
Be provided between two side elevations and adjacent reinforced concrete structure of band steel plate water stopper, external labeling type waterstop and/or in put
Waterstop.
The present invention is based on the construction method of the super plane concrete structure of multi-level network form post-cast strip, including following step
Suddenly：
Step 1: assembling reinforcement, and reserved Construction Later Casting Zone and the construction location of structure post-cast strip；
Step 2（a）, install formwork for placing, and pour the respective sides supporting module of band and structure post-cast strip after construction；
Step 3: pouring reinforcement concrete structure, and conserve；
Step 4: after reinforced concrete structure pours and finishes no less than 45 days, using more higher leveled than former casting concrete micro-
Expansive concrete pouring construction post-cast strip, sequence of construction according to from bottom to top, by center to surrounding sequence carry out, then water storage
Maintenance；
Step 5: after reinforced concrete structure pours and finishes no less than 90 days, the reinforcing bar in connection structure post-cast strip；
Step 6: using slightly expanded concrete pouring structure post-cast strip more higher leveled than former casting concrete, sequence of construction according to
From bottom to top, it is carried out by the sequence at center to surrounding, then water storing conservation.
The present invention is based on the super plane concrete structures and its construction method and the prior art of multi-level network form post-cast strip
It compares, has the advantages that：
Super plane concrete structure the present invention is based on multi-level network form post-cast strip is outside the conventional Construction Later Casting Zone of setting, also
There is provided the structure post-cast strip in net distribution, without setting deformation joint, by the post empiricism of super plane concrete structure
It is divided into 2 steps to carry out, the first order is conventional Construction Later Casting Zone, and the second level is structure post-cast strip, in reinforced concrete structure
The closing that construction no less than carries out after 90 days, the spacing of adjacent structure post-cast strip is 130-180m, can fully discharge reinforcing bar and mix
The contraction distortion of Xtah Crude Clay structure effectively reduces the contraction fissure of concrete, and super plane building structure is prevented to be deformed crack.
Framework of steel reinforcement in structure post-cast strip of the present invention is to disconnect, by connecting reinforcing bar and both sides reinforced concrete structure
In reserved connector connect the framework of steel reinforcement to be formed in structure post-cast strip, this causes the concrete construction in structure post-cast strip
The contraction distortion of section can freely discharge, after controlling post-cast strip closing, the generation of distress in concrete.
The present invention is based on multi-level network form post-cast strip super plane concrete structure construction method sequence of construction more
Flexibly, the time interval of 7-10 days needed without the adjacent concrete region construction as jumping storehouse method, by post-cast strip separation
Into reinforced concrete structure construction area, the cycle request at sequence of construction and adjacent construction area interval is without stringent
Requirement, construction method of the present invention can more quickly finish the integral construction of reinforced concrete structure, be the flowing water of structure
Construction provides work surface, improves construction efficiency.
Construction method of the present invention pour after construction band on the basis of, be arranged at intervals structure post-cast strip, suitable for large scale,
The construction of the flat concrete structure of oversize, the scope of application are more extensive.
Super plane concrete structure based on multi-level network form post-cast strip to the present invention and construction below in conjunction with the accompanying drawings
Method is described further.
Description of the drawings
Fig. 1 is the structure diagram of the super plane concrete structure the present invention is based on multi-level network form post-cast strip；
Fig. 2 is the schematic cross-section of the Construction Later Casting Zone of bottom plate；
Fig. 3 is the schematic cross-section of the structure post-cast strip of bottom plate.
Reference numeral：
1- reinforced concrete structures；2- Construction Later Casting Zones；3- structures post-cast strip；41- steel plate water stoppers；42- external labeling type waterstops；
43- additional waterproof coiled materials；5- bar dowel connectors；6- long splices；7- connection reinforcing bars；Waterstop is put in 8-.
Specific embodiment
As shown in Figure 1 to Figure 3, the present invention is based on the super plane concrete structures of multi-level network form post-cast strip to include reinforcing bar
Concrete structure 1, Construction Later Casting Zone 2 and structure post-cast strip 3；Suitable for floor structure, external wall structure, floor structure beam and base
The construction of the multiple types building structure such as ground coupling beam is illustrated by taking bottom plate as an example in the present embodiment.
Construction Later Casting Zone 2 is crisscross in net distribution, length of the every Construction Later Casting Zone 2 along reinforced concrete structure 1
Or the distance between width direction, uniform intervals setting, adjacent Construction Later Casting Zone 2 is 30-50m, the width of Construction Later Casting Zone 2 is
0.8-1m；Reinforcing bar inside the reinforced concrete structure 1 of 2 side of Construction Later Casting Zone pass perpendicularly through Construction Later Casting Zone 2 stretch into it is another
It is continuous uninterrupted inside the reinforced concrete structure 1 of side；2 liang of side elevations of Construction Later Casting Zone and adjacent reinforced concrete structure 1
Between be provided with steel plate water stopper 41 and/or external labeling type waterstop 42, the width of steel plate water stopper 41 is not less than 30mm, with reinforcing bar
The distance between 1 bottom surface of concrete structure is not less than the 1/2 of 1 thickness of reinforced concrete structure；External labeling type waterstop 42 is arranged on
At the bottom surface of reinforced concrete structure 1,42 lower section of external labeling type waterstop can also additionally be laid with one section of additional waterproof coiled material 43, attached
The width of waterproof roll 43 is added to be not less than 1.5 times of 2 width of Construction Later Casting Zone.
Structure post-cast strip 3 is crisscross in net distribution, length of the every structure post-cast strip 3 along reinforced concrete structure 1
Or the distance between width direction, uniform intervals setting, adjacent structure post-cast strip 3 is 130-180m, the width of structure post-cast strip 3
For 4-6m；7 storied placement of connection reinforcing bar in structure post-cast strip 3, both ends respectively with it is pre- in the reinforced concrete structure of both sides 1
Connector is stayed to connect, the opposite reserved connector of every layer of reinforcing bar is respectively bar dowel connector 5 and long splice 6, is mixed per side reinforcing bar
Bar dowel connector 5 and long splice 6 on Xtah Crude Clay structure 1 is staggered in the vertical direction, connection reinforcing bar 7 both ends respectively with
Bar dowel connector 5 and long splice 6 connect, and the connector for connecting reinforcing bar 7 opens connection, specific connection mode or logical according to 50%
Cross sleeve straight screw connection or welding or overlap joint setting, selection and bar diameter and the bar dowel connector of specific connection mode
5 is related with the length of long splice 6, and the length of bar dowel connector 5 is not less than 500mm；3 liang of structure post-cast strip side elevation and phase
Be provided between adjacent reinforced concrete structure 1 steel plate water stopper 41, external labeling type waterstop 42 and/or in put waterstop 8.
The present invention is based on the construction method of the super plane concrete structure of multi-level network form post-cast strip, including following step
Suddenly：
Step 1: according to detail design demand, reinforcing bar binding, and the construction of reserved Construction Later Casting Zone 2 and structure post-cast strip 3 are carried out
Position；
Step 2（a）, install formwork for placing, and pour the respective sides supporting module of band 2 and structure post-cast strip 3 after construction；
Step 2（b）, in the lower section of reserved Construction Later Casting Zone 2 with the junction of adjacent reinforced concrete structure 1 and reserved
The junction of structure post-cast strip 3 and adjacent reinforced concrete structure 1 be respectively arranged below waterproof construction；
Waterproof construction is steel plate water stopper 41 and/external labeling type waterstop 42, is fixedly connected with reinforcing bar；
Step 3: according to from bottom to top, by the sequence at center to surrounding, pouring reinforcement concrete structure 1, according to《Concrete knot
Structure engineering construction specification》（GB50666-2011）It is required that carry out concrete curing；
Step 4: after reinforced concrete structure 1 is poured and finished not less than 45 days, using more higher leveled than former casting concrete micro-
Expansive concrete pouring construction post-cast strip 2, sequence of construction according to from bottom to top, by center to surrounding sequence carry out, then store
Water curing；
The concrete construction method of Construction Later Casting Zone 2, includes the following steps：
A, it clears up：The construction area of Construction Later Casting Zone 2 is cleared up, and to the edge-on of both sides adjacent reinforced concrete structure 1
Face carries out picking chisel；
B, supporting module：Install the construction formwork of Construction Later Casting Zone 2；
C, reinforcing bar adjusts：It is derusted to the reinforcing bar of Construction Later Casting Zone 2, straightening and banding fixed；
D, preparation is poured：The sundries in 2 template of Construction Later Casting Zone is cleared up, and fully wetting of spraying water；
E, casting concrete：Casting concrete once pours and smashes completion；
F, it conserves：According to《Concrete structure engineering job specfication》（GB50666-2011）It is required that concrete curing is carried out, maintenance
Time is no less than 14 days, and water-tight concrete curing time is no less than 28 days；
Step 5: after reinforced concrete structure 1 is poured and finished not less than 90 days, the connection reinforcing bar in setting structure post-cast strip 3
7, it is fixedly connected with the reserved connector in both sides reinforced concrete structure 1；
Step 6: using slightly expanded concrete pouring structure post-cast strip 3 more higher leveled than former casting concrete, sequence of construction according to
From bottom to top, it is carried out by the sequence at center to surrounding, then water storing conservation；
The concrete construction method of structure post-cast strip 3, includes the following steps：
A, it clears up：The construction area of structure post-cast strip 3 is cleared up, and to the edge-on of both sides adjacent reinforced concrete structure 1
Face carries out picking chisel；
B, supporting module：Install the construction formwork of structure post-cast strip 3；
C, reinforcing bar adjusts：It is derusted to the reserved connector of the reinforcing bar of structure post-cast strip 3, straightening, and connection reinforcing bar 7 is set, tied up
It pricks and fixes；
D, preparation is poured：The sundries in 3 template of structure post-cast strip is cleared up, and fully wetting of spraying water；
E, casting concrete：Casting concrete once pours and smashes completion；
F, it conserves：According to《Concrete structure engineering job specfication》（GB50666-2011）It is required that concrete curing is carried out, maintenance
Time is no less than 14 days, and water-tight concrete curing time is no less than 28 days.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art are to the technical side of the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain that claims of the present invention determines.
Claims (10)
1. based on the super plane concrete structure of multi-level network form post-cast strip, including reinforced concrete structure（1）After construction
Pour band（2）, Construction Later Casting Zone（2）It is crisscross in net distribution, every Construction Later Casting Zone（2）Along reinforced concrete structure（1）
Length or width direction, uniform intervals setting, it is characterised in that：Further include structure post-cast strip（3）, the structure post-cast strip
（3）It is crisscross in net distribution, every structure post-cast strip（3）Along reinforced concrete structure（1）Length or width direction,
Even interval setting, adjacent structure post-cast strip（3）The distance between be 130-160m.
2. the super plane concrete structure according to claim 1 based on multi-level network form post-cast strip, it is characterised in that：
The adjacent Construction Later Casting Zone（2）The distance between for 30-50m, Construction Later Casting Zone（2）Width be 0.8-1m.
3. the super plane concrete structure according to claim 1 based on multi-level network form post-cast strip, it is characterised in that：
The structure post-cast strip（3）Width be 4-6m.
4. the super plane concrete structure according to claim 1 based on multi-level network form post-cast strip, it is characterised in that：
The Construction Later Casting Zone（2）The reinforced concrete structure of side（1）Internal reinforcing bar passes perpendicularly through Construction Later Casting Zone（2）It stretches into another
The reinforced concrete structure of side（1）Inside, it is continuous uninterrupted.
5. the super plane concrete structure according to claim 1 based on multi-level network form post-cast strip, it is characterised in that：
The Construction Later Casting Zone（2）Two side elevations and adjacent reinforced concrete structure（1）Between be provided with steel plate water stopper（41）With/
Or external labeling type waterstop（42）.
6. the super plane concrete structure according to claim 1 based on multi-level network form post-cast strip, it is characterised in that：
The structure post-cast strip（3）Interior laminate layer is provided with connection reinforcing bar（7）, connect reinforcing bar（7）It is mixed respectively with the reinforcing bar of both sides at both ends
Xtah Crude Clay structure（1）In corresponding reserved connector connection.
7. the super plane concrete structure according to claim 6 based on multi-level network form post-cast strip, it is characterised in that：
The corresponding reserved connector of every layer of reinforcing bar is respectively bar dowel connector（5）With long splice（6）, bar dowel connector（5）Length
Degree is not less than 500mm.
8. the super plane concrete structure according to claim 7 based on multi-level network form post-cast strip, it is characterised in that：
Per side reinforced concrete structure（1）On bar dowel connector（5）With long splice（6）It is staggered in the vertical direction,
Every connection reinforcing bar（7）Both ends respectively with bar dowel connector（5）With long splice（6）Connection.
9. the super plane concrete structure according to claim 1 based on multi-level network form post-cast strip, it is characterised in that：
The structure post-cast strip（3）Two side elevations and adjacent reinforced concrete structure（1）Between be provided with steel plate water stopper（41）、
External labeling type waterstop（42）Waterstop is put in and/or（8）.
10. the super plane concrete structure described in any one of claim 1-9 based on multi-level network form post-cast strip is applied
Work method, it is characterised in that：Include the following steps：
Step 1: assembling reinforcement, and reserved Construction Later Casting Zone（2）With structure post-cast strip（3）Construction location；
Step 2（a）, install formwork for placing, and pour band after construction（2）With structure post-cast strip（3）Respective sides install mould
Plate；
Step 3: pouring reinforcement concrete structure（1）, and conserve；
Step 4: treat reinforced concrete structure（1）It pours after finishing no less than 45 days, using more higher leveled than former casting concrete
Slightly expanded concrete pouring construction post-cast strip（2）, sequence of construction according to from bottom to top, by center to surrounding sequence carry out, so
Water storing conservation afterwards；
Step 5: treat reinforced concrete structure（1）It pours after finishing no less than 90 days, connection structure post-cast strip（3）Interior reinforcing bar；
Step 6: use slightly expanded concrete pouring structure post-cast strip more higher leveled than former casting concrete（3）, sequence of construction presses
According to from bottom to top, carried out by the sequence at center to surrounding, then water storing conservation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810213996.2A CN108240038B (en) | 2018-03-15 | 2018-03-15 | Ultra-large plane concrete structure based on multistage grid type post-cast strip and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810213996.2A CN108240038B (en) | 2018-03-15 | 2018-03-15 | Ultra-large plane concrete structure based on multistage grid type post-cast strip and construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN108240038A true CN108240038A (en) | 2018-07-03 |
| CN108240038B CN108240038B (en) | 2023-09-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109208907A (en) * | 2018-10-19 | 2019-01-15 | 中国十七冶集团有限公司 | High temperature and the temperature difference it is big under conditions of overlength reinforced concrete wall panel compartment construction method |
| CN111206746A (en) * | 2020-01-09 | 2020-05-29 | 海达建设集团有限公司 | Construction method of large-area terrace |
| CN111648411A (en) * | 2020-05-06 | 2020-09-11 | 上海建工二建集团有限公司 | Downward-turning type post-cast strip support replacing structure, construction method and post-cast strip construction method |
| CN112031035A (en) * | 2020-08-27 | 2020-12-04 | 北京市第三建筑工程有限公司 | Entrance and exit indwelling structure of foundation slab post-cast strip with thickness greater than one meter and construction method |
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