CN110284717A - Super-long-and-Large-area is seamless concrete construction method - Google Patents
Super-long-and-Large-area is seamless concrete construction method Download PDFInfo
- Publication number
- CN110284717A CN110284717A CN201910334876.2A CN201910334876A CN110284717A CN 110284717 A CN110284717 A CN 110284717A CN 201910334876 A CN201910334876 A CN 201910334876A CN 110284717 A CN110284717 A CN 110284717A
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- Prior art keywords
- concrete
- reinforcing band
- expansion
- expansion reinforcing
- pour
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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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- 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
Abstract
The invention discloses a kind of seamless concrete construction methods of Super-long-and-Large-area, post-cast strip is replaced with expansion reinforcing band, after reinforcing bar is bound, it binds thin and close two-way reinforcement for two sides in expansion reinforcing band and reinforcement is done using reinforcing bar and fix, it is divided into several regions by boundary of expansion reinforcing band, it selects planar dimension smaller and is poured on one side as the axis of thrust and from being promoted in parallel while longitudinal direction to another side, first pour the outer side concrete of expansion reinforcing band, when being advanced into expansion reinforcing band, pour expansion reinforcing band inner concrete, the outer other side concrete of expansion reinforcing band is poured again, expansion reinforcing band is outer must not to be interrupted with continuous placing in expansion reinforcing band leads to occur the cold seam of construction；Lower limit expansion rate concrete is used outside expansion reinforcing band, uses higher limited expansion rate concrete in expansion reinforcing band.This method has saved artificial and construction cost, improves the anti-permeability performance of concrete, reduces harmful cracks, avoids concrete centralizedly supply.
Description
Technical field
The invention belongs to the realm of building construction, and in particular to a kind of seamless concrete construction method of Super-long-and-Large-area.
Background technique
When civil buildings, especially underground garage are constructed, there are the seamless concrete structures of Super-long-and-Large-area, with construction
The application of middle pumped concrete earth process, temperature shrinkage fracture, which occurs, in Super-long-and-Large-area concrete structure to be had the tendency that gradually increasing,
Therefore the underground anti-crack and anti-seepage position of beam, plate, wall needs to be arranged post-cast strip, and existing post empiricism is more complicated, efficiency
It is low, construction cost is high: it is long-term to occupy turnover material tool and template, it is necessary to which that steel plate water stopper or water expandable waterstop are set, it is necessary to
Complete the processes such as raked joint, dabbing, reinforcing bar derusting.And the contraction of concrete and the variation of temperature can all make large area concrete exist
Very important deformation is generated in plane, post-cast strip and construction joint position will appear crack infiltration, influence structure durability and
Globality.
Summary of the invention
The object of the present invention is to provide a kind of seamless concrete construction method of Super-long-and-Large-area, this method expansion reinforcing bands
Instead of original post-cast strip, artificial and construction cost is saved, the anti-permeability performance of concrete has been improved, reduces harmful cracks,
Avoid concrete centralizedly supply.
The technical scheme adopted by the invention is that:
A kind of seamless concrete construction method of Super-long-and-Large-area, replaces post-cast strip with expansion reinforcing band, comprising steps of
S1, pour it is preceding prepare-determine arrangement and method for construction according to the actual situation on site to instruct the construction of overall process；According to
Arrangement and method for construction determines temperature measuring point and buries temperature transducer in place；According to the concrete slump of the face that pours and determination, mix
It coagulates the amount of concrete needed after trickling naturally on the presetting period calculating coagulation for pouring thickness and concrete of soil and mixes per hour
The solidifying soil amount of pouring, according to amount of concrete and concreting amount arrangement concrete pump and the position of material distributing machine and true per hour
Determine the length of pipeline, it is ensured that concrete pump close to pour a little and casting area and it is adjacent it is solidifying soil delivery pump casting area phase
Mutually linking；Flow direction and the temporary parking position of vehicle are determined according to the position of concrete pump and material distributing machine；Reinforcing bar has been bound
Bi Hou binds thin and close two-way reinforcement and does reinforcement using reinforcing bar and fixes in expansion reinforcing band for two sides；
S2, pour-be divided into several regions by boundary of expansion reinforcing band, select planar dimension smaller on one side as pushing away
It inlet wire and is poured from longitudinal is promoted in parallel to another side on one side, first pours expansion reinforcing band side concrete outside, be advanced into expansion
When reinforcing strip, pour expansion reinforcing band inner concrete, then pour the outer other side concrete of expansion reinforcing band, expansion reinforcing band it is outer with
Continuous placing, which must not be interrupted, in expansion reinforcing band leads to cold seam of constructing occur；Use lower limit expansion rate mixed outside expansion reinforcing band
Solidifying soil, expansion reinforcing band is interior to use higher limited expansion rate concrete；
S3, pour after after maintenance-concrete smears pressure, plastic covering film is retained immediately, is covered after final set hardening wet
Gunnysack moisture-keeping maintaining.
Further, in S2, it is ensured that under the premise of concrete supply, while pouring the outer two sides coagulation of expansion reinforcing band
Soil promotes to expansion reinforcing band, finally pours expansion reinforcing band inner concrete, and cannot wait expansion reinforcing bands in expansion reinforcing band
Outer two sides pour again after pouring, and pour expansion reinforcing band inner concrete before the concrete initial set of two sides outside expansion reinforcing band.
Further, in S2, for the expansion reinforcing band at floor, wall, if amount of concrete is less, tower crane is used
Cooperation pours, and expansion reinforcing band inner concrete once stir the amount of showing up should not be excessive, in order to avoid pouring, time span is too long to be more than
Losing the job property of concrete initial set time.
Further, C30 swelling fiber concrete is used outside expansion reinforcing band, is expanded in expansion reinforcing band using C35 fine
Tie up concrete.
Further, the wide 2~3m of expansion reinforcing band, two-way reinforcement use 10%~15%.
The beneficial effects of the present invention are:
1. this method replaces original post-cast strip with expansion reinforcing band, avoids post-cast strip position and occupy turnover material tool for a long time
And template, it is not necessary to steel plate water stopper or water expandable waterstop are set, raked joint, dabbing, reinforcing bar derusting of post-cast strip etc. are eliminated
Complicated procedures of forming has saved labour cost, reduces construction cost.
2. this method increases two-way reinforcement for two sides in expansion reinforcing band, it is therefore prevented that with outer concrete due to barrier imprecision
It flows into reinforcing strip, improves the anti-permeability performance of concrete.
3. the shrinkage value in view of pump concrete is 20%-30% bigger than job mix concrete, the contraction of concrete is gentle
The variation of temperature can all influence large area concrete planar very important deformation, in expansion reinforcing band using it is higher limit it is swollen
Swollen rate concrete and expansion reinforcing band for two sides increase two-way reinforcement, reduce harmful cracks.
4. this method shortens the length of delivery pipe, pumping efficiency has been given full play to, construction cost has been reduced, can reduce mixed
The supply for coagulating soil, avoids concrete centralizedly supply.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Fig. 2 is the Construction Principle figure of expansion reinforcing band in the present invention.
Fig. 3 is that concrete pours precedence diagram in the present invention.
Fig. 4 is the construction schematic diagram of expansion reinforcing band in the present invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
A kind of seamless concrete construction method of Super-long-and-Large-area, replaces post-cast strip with expansion reinforcing band, as shown in Figure 1, step
It is rapid as follows.
S1, pour it is preceding prepare-determine arrangement and method for construction according to the actual situation on site to instruct the construction of overall process；According to
Arrangement and method for construction determine temperature measuring point and by temperature transducer it is embedded in place (due to the seamless concrete anticracking of Super-long-and-Large-area require compared with
Height, temperature control are the key points of Crack Control, general every 200m2One temperature measuring point is set, according to environment temperature in advance to being used
Material calculated)；According to the concrete slump of the face that pours and determination, concrete pour thickness and concrete just
The amount of concrete needed after trickling naturally on time calculating coagulation and per hour concreting amount are coagulated, according to amount of concrete and often
The position of hour concreting amount arrangement concrete pump and material distributing machine simultaneously determines that the length of pipeline (shortens the length of delivery pipe
Degree, gives full play to pumping efficiency, reduces construction cost), it is ensured that concrete pump close to pour a little and casting area with it is adjacent
The casting area of solidifying soil delivery pump is mutually linked；The flow direction of vehicle is determined according to the position of concrete pump and material distributing machine and is faced
When parking position；After reinforcing bar is bound, thin and close two-way reinforcement is bound for two sides in expansion reinforcing band and uses (Φ 20)
It is fixed (as shown in Figure 2 and Figure 4) that reinforcing bar does reinforcement.
S2, as shown in Figures 2 and 3, pour-it using expansion reinforcing band is that boundary is divided into several regions, selection planar dimension
It is smaller on one side be used as the axis of thrust and from it is longitudinal while promote to pour in parallel to another side and (supply of concrete can be reduced, kept away
Exempt from concrete centralizedly supply), the outer side concrete of expansion reinforcing band is first poured, when being advanced into expansion reinforcing band, expansion is poured and adds
Strong band inner concrete, then the outer other side concrete of expansion reinforcing band is poured, expansion reinforcing band is outer continuously to be poured in expansion reinforcing band
Must not build to be interrupted and leads to cold seam of constructing occur；Lower limit expansion rate concrete is used outside expansion reinforcing band, in expansion reinforcing band
Using higher limited expansion rate concrete.
S3, pour after after maintenance-concrete smears pressure, plastic covering film is retained immediately, is covered after final set hardening wet
Gunnysack moisture-keeping maintaining (moisture-keeping maintaining time 14d or more).
In S2, it is ensured that under the premise of concrete supply, the outer two sides concrete of expansion reinforcing band can also be poured simultaneously, to
Expansion reinforcing band promotes, and finally pours expansion reinforcing band inner concrete, and expansion reinforcing bands outer two cannot be waited in expansion reinforcing band
Side pours again after pouring, and pours expansion reinforcing band inner concrete before the concrete initial set of two sides outside expansion reinforcing band.
In S2, for the expansion reinforcing band at floor, wall, if amount of concrete is less, poured using tower crane cooperation,
And expansion reinforcing band inner concrete once stir the amount of showing up should not be excessive, in order to avoid pour time span it is too long be more than concrete initial set
Losing the job property of time.
In the present embodiment, C30 swelling fiber concrete is used outside expansion reinforcing band, uses C35 swollen in expansion reinforcing band
Swollen fiber concrete, the wide 2~3m of expansion reinforcing band, two-way reinforcement use 10%~15%.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (5)
1. a kind of seamless concrete construction method of Super-long-and-Large-area, it is characterised in that: post-cast strip is replaced with expansion reinforcing band, including
Step,
S1, pour it is preceding prepare-determine arrangement and method for construction according to the actual situation on site to instruct the construction of overall process；According to construction
Scheme determines temperature measuring point and buries temperature transducer in place；According to the concrete slump of the face that pours and determination, concrete
The presetting period for pouring thickness and concrete calculate trickle naturally on coagulation after the amount of concrete that needs and concrete per hour
The amount of pouring is arranged the position of concrete pump and material distributing machine and is determined and manages according to amount of concrete and per hour concreting amount
The length in road, it is ensured that concrete pump close to pour a little and casting area and it is adjacent it is solidifying soil delivery pump casting area mutually hold in the mouth
It connects；Flow direction and the temporary parking position of vehicle are determined according to the position of concrete pump and material distributing machine；After reinforcing bar is bound,
It binds thin and close two-way reinforcement for two sides in expansion reinforcing band and reinforcement is done using reinforcing bar and fix；
S2, pour-be divided into several regions by boundary of expansion reinforcing band, select planar dimension smaller on one side as the axis of thrust
And poured from longitudinal promoted in parallel to another side on one side, the outer side concrete of expansion reinforcing band is first poured, expansion is advanced into and reinforces
When band, expansion reinforcing band inner concrete is poured, then pours the outer other side concrete of expansion reinforcing band, expansion reinforcing band is outer and expands
Continuous placing, which must not be interrupted, in reinforcing strip leads to cold seam of constructing occur；Lower limit expansion rate coagulation is used outside expansion reinforcing band
Soil, expansion reinforcing band is interior to use higher limited expansion rate concrete；
S3, pour after after maintenance-concrete smears pressure, plastic covering film is retained immediately, covers wet gunnysack after final set hardening
Moisture-keeping maintaining.
2. the seamless concrete construction method of Super-long-and-Large-area as described in claim 1, it is characterised in that: in S2, it is ensured that mixed
Under the premise of solidifying soil supply, while the outer two sides concrete of expansion reinforcing band is poured, is promoted to expansion reinforcing band, finally pour expansion
Reinforcing strip inner concrete, and poured again after the outer two sides of expansion reinforcing bands cannot be waited to pour in expansion reinforcing band, add in expansion
By force with pouring expansion reinforcing band inner concrete before outer two sides concrete initial set.
3. the seamless concrete construction method of Super-long-and-Large-area as described in claim 1, it is characterised in that: in S2, for building
Expansion reinforcing band at plate, wall is poured, and expansion reinforcing band inner concrete if amount of concrete is less using tower crane cooperation
The primary stirring amount of showing up should not be excessive, in case it is more than losing the job property of concrete initial set time that it is too long, which to pour time span,.
4. the seamless concrete construction method of Super-long-and-Large-area as described in claim 1, it is characterised in that: adopted outside expansion reinforcing band
With C30 swelling fiber concrete, expansion reinforcing band is interior to use C35 swelling fiber concrete.
5. the seamless concrete construction method of Super-long-and-Large-area as described in claim 1, it is characterised in that: expansion reinforcing band is wide by 2
~3m, two-way reinforcement use 10%~15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910334876.2A CN110284717A (en) | 2019-04-24 | 2019-04-24 | Super-long-and-Large-area is seamless concrete construction method |
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| CN201910334876.2A CN110284717A (en) | 2019-04-24 | 2019-04-24 | Super-long-and-Large-area is seamless concrete construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962610A (en) * | 2021-01-22 | 2021-06-15 | 中化（舟山）兴海建设有限公司 | One-time pouring method for large-size raft plate concrete of large petrochemical storage tank bearing platform |
| CN113668928A (en) * | 2021-06-18 | 2021-11-19 | 中国化学工程第十四建设有限公司 | Method for controlling construction cracks of ultra-large-volume concrete water pool |
| CN114277840A (en) * | 2021-12-22 | 2022-04-05 | 珠海华发人居生活研究院有限公司 | Construction method for reducing post-cast strip setting and controlling harmful cracks of concrete |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083887A (en) * | 1993-09-08 | 1994-03-16 | 中国建筑材料科学研究院 | Nonseam design construction method of super-long reinforced concrete structure |
| US20050257448A1 (en) * | 2002-09-18 | 2005-11-24 | Derrek William Batty | Support device for a rib |
| CN102251674A (en) * | 2011-06-05 | 2011-11-23 | 山东宁建建设集团有限公司 | Bunker-skipping type seamless construction method of ultra-long concrete structure |
| CN107338966A (en) * | 2017-07-25 | 2017-11-10 | 中国建筑第八工程局有限公司 | Large volume ultra-long concrete teletostage jointless construction conserves structure and construction and maintenance method |
| CN109024704A (en) * | 2018-08-02 | 2018-12-18 | 中国十七冶集团有限公司 | A kind of staged expansion reinforcing band system and construction method |
-
2019
- 2019-04-24 CN CN201910334876.2A patent/CN110284717A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083887A (en) * | 1993-09-08 | 1994-03-16 | 中国建筑材料科学研究院 | Nonseam design construction method of super-long reinforced concrete structure |
| US20050257448A1 (en) * | 2002-09-18 | 2005-11-24 | Derrek William Batty | Support device for a rib |
| CN102251674A (en) * | 2011-06-05 | 2011-11-23 | 山东宁建建设集团有限公司 | Bunker-skipping type seamless construction method of ultra-long concrete structure |
| CN107338966A (en) * | 2017-07-25 | 2017-11-10 | 中国建筑第八工程局有限公司 | Large volume ultra-long concrete teletostage jointless construction conserves structure and construction and maintenance method |
| CN109024704A (en) * | 2018-08-02 | 2018-12-18 | 中国十七冶集团有限公司 | A kind of staged expansion reinforcing band system and construction method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962610A (en) * | 2021-01-22 | 2021-06-15 | 中化（舟山）兴海建设有限公司 | One-time pouring method for large-size raft plate concrete of large petrochemical storage tank bearing platform |
| CN113668928A (en) * | 2021-06-18 | 2021-11-19 | 中国化学工程第十四建设有限公司 | Method for controlling construction cracks of ultra-large-volume concrete water pool |
| CN113668928B (en) * | 2021-06-18 | 2022-12-09 | 中国化学工程第十四建设有限公司 | Method for controlling construction cracks of ultra-large-volume concrete water pool |
| CN114277840A (en) * | 2021-12-22 | 2022-04-05 | 珠海华发人居生活研究院有限公司 | Construction method for reducing post-cast strip setting and controlling harmful cracks of concrete |
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Application publication date: 20190927 |