CN106121236A - Floor bar protective layer and structural elevation integrated control method - Google Patents
Floor bar protective layer and structural elevation integrated control method Download PDFInfo
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- CN106121236A CN106121236A CN201610787628.XA CN201610787628A CN106121236A CN 106121236 A CN106121236 A CN 106121236A CN 201610787628 A CN201610787628 A CN 201610787628A CN 106121236 A CN106121236 A CN 106121236A
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- floor
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- protective layer
- split heads
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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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- 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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention belongs to structural engineering technical field of construction; in order to solve the problem that floor absolute altitude and thickness of protection tier in cast-in-place structural floorslab concrete work progress are comprehensively precisely controlled difficulty; the invention provides a kind of floor bar protective layer and structural elevation integrated control method; the core technology of the present invention is multi-functional bar split heads, and core process is to utilize each functional part of steel bar horse-shaped bench accurately to adjust cover to reinforcement, control floorslab concrete absolute altitude.Utilize described multi-functional bar split heads to control technique and can substitute construction method and the construction materials such as concrete pad, common split heads, bracing wire elevation control completely, it is possible to directly replace one distributing reinforcement, save material, there is higher Social benefit and economic benefit.
Description
Technical field
The invention belongs to structural engineering technical field of construction, be specifically related to a kind of cast-in-place structural floor absolute altitude, protection
The floor bar protective layer and the structural elevation integrated control method that accurately control application of layer thickness.
Background technology
50 control lines, concreting is marked on commonly used post muscle during building cast-in-situ structure floor concrete construction at present
Time control floor elevation according to 50 control line absolute altitude bracing wire ropes；Lower floor's steel bar stress protective layer thickness is mainly by concrete pad
Ensure, upper strata steel bar stress supports mainly by steel bar horse-shaped bench and controls.
During practice of construction, when using the construction method that mark 50 line bracing wire rope controls floor elevation and thickness of slab, deposit
Loaded down with trivial details in operation and degree of accuracy is poor, and cotton rope is not easy to construction, is easily destroyed in construction, affect construction speed and execute
Working medium amount；Absolute altitude is measured according to beam reinforced steel bar, it is difficult to ensure cover to reinforcement according to scene；Lower floor's steel bar stress uses coagulation
After soil cushion block, easily by disturbance in casting process；After upper strata steel bar stress uses split heads, easily become by external force in casting process
Shape, all can not preferably ensure plate tendon protective layer thickness qualification rate.
Summary of the invention
The present invention is to solve that in cast-in-place structural floorslab concrete work progress, floor absolute altitude and thickness of protection tier are combined
Close the problem being precisely controlled difficulty, have developed a kind of novel floor bar protective layer and structural elevation integrated control method and construction
Method, it is ensured that reach the every technical parameter of Precise control, is greatly improved surface level and flatness, guarantees to protect thickness simultaneously
Degree reaches code requirement and the purpose of design requirement, it is achieved become more meticulous construction requirement, and construction quality and work efficiency are greatly improved.
The present invention adopts the following technical scheme that
A kind of floor bar protective layer and structural elevation integrated control method, utilize each function part of multi-functional bar split heads device
The whole cover to reinforcement of floor, control floorslab concrete absolute altitude are accurately adjusted in position, and concrete control process is as follows:
(1) basic level requirement: structure floor is after top template installation, and detection adjustment makes top template surface level and flatness
Meet design and code requirement；
(2) floor bar upper and lower protective layer location: the underfloor protective layer distributing reinforcement arranging steel bar stress mesh sheet at the bottom of floor is laid
After, according to slab thickness and the uniform placement of negative muscle deployment scenarios some multi-functional bars split heads device；Then by underfloor
Protective layer distributing reinforcement is placed on reinforcing bar crotch fixing, requires to lay floor up-protective layer distributing reinforcement according to design, floor is protected
Whole colligation is carried out, it is ensured that firmly at sheath distributing reinforcement and multi-functional bar split heads device cross-car point；
(3) Pass line adjustment, control: after underfloor protective layer distributing reinforcement and the equal colligation of floor up-protective layer distributing reinforcement complete, by tower
Chi stands on the screw of composite control apparatus, utilizes level gauge to observe, and upper and lower rotary screw is adjusted, and makes screw elevation of top
Reach floor plate top designed elevation；After floor plate top mark height determines, adjusting nut is rotated to being close on fixing nut, prevent from adjusting
Joint nut is up and down, it is ensured that will not produce error in casting process because of external force factor to floor plate top mark height；By floor
Screw (31) on plate face two ends control instrument has regulated post-tensioning and has led to line, remaining spiral shell in the middle of regulation multi-functional bar split heads device
Silk elevation of top, the like, complete the measurement levelling work of whole floor board face structure absolute altitude；
(4) floorslab concrete face is the most levelling: according to the top jam plate between composite control apparatus during floorslab concrete receipts face
Top mark height control point uses darby to carry out accurate levelling construction.
The cross bar of multi-functional bar split heads device and underfloor protective layer distributing reinforcement, floor up-protective layer in described step 2
Distributing reinforcement is parallel, and cross bar is equal with the height of floor up-protective layer distributing reinforcement.
When described cross bar replaces part floor up-protective layer distributing reinforcement to arrange, multi-functional bar split heads device is in one line,
Adjacent crossbars overlap joint, lap-joint's colligation at least twice, it is ensured that firmly.
The lap of splice of described adjacent crossbars is not less than 100mm.
Described reinforcing bar crotch is placed on the position, cross point of underfloor protective layer distributing reinforcement, to strengthen row's stress steel at the bottom of floor
The overall control of muscle mesh sheet influence area, beneficially lower protective layer.
Described darby a length of 2-3 rice, the size of darby can according to the concrete row of multi-functional bar split heads device to
It is adjusted away from setting, is designed as 2.5 meters more.
Described multi-functional bar split heads device, including cross bar, being provided with connection in the middle of supporting leg, cross bar below cross bar two ends has comprehensive
Close and control device；Described composite control apparatus includes upright supports connected vertically with cross bar, and upright supports top is by fixing
The vertical connecting screw of nut, screw is equipped adjusting nut, is provided with reinforcing bar crotch upward bottom upright supports.Two comprehensively control
The spacing of device processed is traditionally arranged to be 1 meter, when the cross bar of multi-functional bar split heads device does not replace floor up-protective layer distributing reinforcement
Time, can suitably strengthen the distance between adjacent split heads.
The a length of 1-1.5 rice of described cross bar.
Described reinforcing bar crotch is equal with the absolute altitude of underfloor protective layer distributing reinforcement with upright supports distance from bottom.
Utilize described multi-functional bar split heads device can substitute concrete pad, common split heads, bracing wire elevation control completely
Etc. construction method and construction material, it is possible to directly replace one distributing reinforcement, save material, have the advantages that
1, social benefit
Using this construction method to construct, can be precisely controlled cast-in-situ floor absolute altitude, thickness of protection tier, plate face is smooth
Degree, absolute altitude, thickness of protection tier actual measurement actual quantities qualification rate can be obviously improved.At Guanlan three, the Five continents, Yuncheng phase 15#, 16#, 17#
Building cast-in-place structural floor uses this to control after way, and construction quality achieves noticeable achievement, and concrete structure floor elevation, flatness qualification rate can
To reach more than 96%, floor bar protective layer qualification rate can reach more than 97%.
Local quality supervision department, construction unit, supervisor are to the structure floor thickness of protection tier of this engineering, floor mark
High and physical dimension control effect is the most satisfied, gives floor bar protective layer and structural elevation Comprehensive Control construction method
High evaluation accreditation.
2, economic benefit
Use this way can replace concrete pad and common split heads completely, can replace with Party A, the negotiation of design side together with floor
Distributing reinforcement, it is also possible to this part generation expense is individually negotiated visa, remarkable in economical benefits.
Use this to control way, initial estimate when phase 15#, 16#, 17# building, Guanlan three, the Five continents, Yuncheng structure floor is constructed
Steel bar horse-shaped bench, distributing reinforcement alternative aspect can surplus reinforcing bar about 8.5t(15#, 16#, 17# building construction areas about 120000).
Accompanying drawing explanation
Fig. 1 is the structural representation of multi-functional bar split heads device；
Fig. 2 is the structural representation of composite control apparatus；
Fig. 3 is that the upper and lower protective layer of floor bar positions schematic diagram；
Fig. 4 is Pass line adjustment, controls schematic diagram；
Fig. 5 is the accurate levelling schematic diagram in floorslab concrete face；
In figure: 1-cross bar (cross bar can partly substitute floor up-protective layer distributing reinforcement), 2-supporting leg, 3-composite control apparatus, 4-plate
At the bottom of negative muscle, 5-plate, row's principal rod, 6-level gauge, 7-take and protect on chi, 8-darby, 9-underfloor protective layer distributing reinforcement, 10-floor
Layer distributing reinforcement；
31-screw, 32-adjusting nut, 33-fix nut, 34-upright supports, 35-reinforcing bar crotch.
Detailed description of the invention
In conjunction with accompanying drawing, the detailed description of the invention of the present invention is described further:
The invention aims to solve floor absolute altitude and cover to reinforcement in cast-in-place structural floorslab concrete work progress thick
Degree is comprehensively precisely controlled the problem of difficulty, researches and develops a kind of novel floor bar protective layer and structural elevation Comprehensive Control construction party
Method, it is ensured that reach the every technical parameter of Precise control, is greatly improved surface level and flatness, guarantees protective layer thickness simultaneously
Reach code requirement and the purpose of design requirement, it is achieved become more meticulous construction requirement, and construction quality and work efficiency are greatly improved.
The core technology of the present invention is the invention application of multi-functional bar split heads device, and core process is to utilize steel bar horse-shaped bench
Each functional part of device accurately adjusts cover to reinforcement, controls floorslab concrete absolute altitude.Floor bar protective layer and structure mark
The development of the multi-functional bar split heads device used in high Comprehensive Control construction method is that this technique is the most crucial, instrument master
To be formed by reinforcing bar, screw, nut-welding.The structure of described multi-functional bar split heads device is as it is shown in figure 1, include cross bar 1, horizontal
It is provided with below bar 1 two ends in the middle of supporting leg 2, cross bar 1 to connect and has the structure of composite control apparatus 3 described in composite control apparatus 3. such as figure
Shown in 2, including upright supports 34 connected vertically with cross bar 1, upright supports 34 top vertically connects spiral shell by fixing nut 33
Silk 31, screw 31 is equipped adjusting nut 32, is provided with reinforcing bar crotch 35 upward bottom upright supports 34.Utilize fixing nut
33 and adjusting nut 32 screw is fixed, accurately regulate the accuracy of controlroof absolute altitude.
Reinforcing bar crotch in Comprehensive Control instrument is used for fixing underfloor protective layer distributing reinforcement 9, it is ensured that end row's steel bar stress
Protective layer thickness, supporting leg, cross bar can guarantee protection thickness thereon by large-area support floor up-protective layer distributing reinforcement 10
Degree meets requirement, pours adjacent control Tool Room during concrete and can carry out the accurate control of whole floor elevation and flatness with darby
System.Multi-functional bar split heads controls technique can substitute the construction parties such as concrete pad, common split heads, bracing wire elevation control completely
Method and construction material, it is possible to directly replace one distributing reinforcement, save material.
The concrete production method of described multi-functional bar split heads device is as follows:
First the elongated split heads of welding production reinforcing bar (cross bar and supporting leg), split heads height deducts plate according to slab thickness and bears muscle diameter meter
Depending on calculation.
Comprehensive Control tool making method: according to split heads height well cutting steel bar end diameter 10mm → nut is welded to steel
The first end of muscle → Φ 6 reinforcement fabrication elbow is welded to steel bar end other end 15mm position, and (inside crotch, epithelium is away from Steel-bar Pile end
Head 15mm) → screw is screwed in nut.
Control tool point is welded on steel bar horse-shaped bench.
The concrete control process utilizing multi-functional bar split heads device is as follows:
(1) basic level requirement
Structure floor after top template installation, detection adjustment make top template surface level (i.e. floor level in Fig. 3) and
Flatness to meet design and code requirement.
(2) floor bar upper and lower protective layer location
After arranging underfloor protective layer distributing reinforcement 9 laying of steel bar stress mesh sheet at the bottom of floor, according to slab thickness and negative muscle cloth
Situation of putting places multi-functional bar split heads device；When the cross bar of multi-functional bar split heads device replaces a point floor up-protective layer distribution
During muscle, multi-functional bar split heads is in one line, overlaps 100mm, lap-joint's colligation twice, it is ensured that firmly；Work as multi-functional bar
When split heads does not replaces distributing reinforcement, can suitably strengthen the distance (concrete distance is depending on practical situation) between adjacent split heads.
The end, arranges steel bar stress mesh sheet orlop reinforcing bar (underfloor protective layer distributing reinforcement) be placed on Φ 6 reinforcing bar crotch
It is fixing that (reinforcing bar crotch is preferably placed on position, reinforcing bar cross point to strengthen bottom mesh sheet influence area, and beneficially lower protective layer is whole
Body controls).
Require to lay floor up-protective layer distributing reinforcement, steel bar stress (floor up-protective layer distributing reinforcement) and many merits according to design
Whole colligation can be carried out at steel bar horse-shaped bench cross-car point, it is ensured that firmly, reduce principal rod and broken in subsequent handling is constructed
Bad skew.
(3) Pass line adjustment, control
After floor bar (underfloor protective layer distributing reinforcement and floor up-protective layer distributing reinforcement) colligation completes, use before concrete construction
Level gauge detection nut absolute altitude is also adjusted so that it is consistent with floor elevation.Sopwith staff is stood on Comprehensive Control instrument Φ 5 screw
On, utilize level gauge to observe, upper and lower rotary screw is adjusted making screw elevation of top to be plate face designed elevation (i.e. institute in Fig. 3
The plate top mark that shows is high), after floor plate top mark height determines, adjusting nut is rotated to being close on fixing nut and prevent it up and down
(nut plays regulatory role；One nut plays fixed screw effect), it is ensured that elevation of top will not be because of outward in casting process
Power factor and produce error.
Screw top cap on plate face two ends control instrument is regulated post-tensioning and has led to line, regulated multi-functional bar split heads device
Remaining screw elevation of top middle, the like, complete the measurement levelling work of whole floor board face structure absolute altitude, the most permissible
Reduce elevation of top and measure workload, accelerating construction progress.The most first determine the absolute altitude of floor boundary, then determine middle part
Absolute altitude.
(4) floorslab concrete face is the most levelling
Plate surface concrete has watered, first with instruments such as spades by the most levelling for plate surface concrete, then with 2.5m long darby root
Carry out the most levelling according to nut absolute altitude, finally carry out receipts face, press polish process with plasterer's trowel.According to comprehensively during floorslab concrete receipts face
Screw top (being the control point of structure floor concrete absolute altitude) between control instrument uses 2.5m darby to carry out the most levelling executing
Work.Darby size can be adjusted to spacing setting according to the concrete row of multi-functional bar split heads.Concrete placings construction before need into
Row is confided a technological secret, and notes Comprehensive Control instrument top nut is carried out finished product protection during construction, stops artificially to trample, pump line touches
Hit, vibrating spear directly contacts, it is ensured that top nut is always design structure floor elevation, thus just ensures the absolute altitude after concrete molding
Really property and physical dimension quality.
Claims (9)
1. a floor bar protective layer and structural elevation integrated control method, it is characterised in that utilize multi-functional bar split heads to fill
The each functional part put accurately adjusts the whole cover to reinforcement of floor, control floorslab concrete absolute altitude, and concrete control process is as follows:
(1) basic level requirement: structure floor is after top template installation, and detection adjustment makes top template surface level and flatness
Meet design and code requirement；
(2) floor bar upper and lower protective layer location: arrange underfloor protective layer distributing reinforcement (9) paving of steel bar stress mesh sheet at the bottom of floor
After if, according to slab thickness and the uniform placement of negative muscle deployment scenarios some multi-functional bars split heads device；Then by floor
It is upper fixing that lower protective layer distributing reinforcement (9) is placed on reinforcing bar crotch (35), requires to lay floor up-protective layer distributing reinforcement according to design
(10), floor up-protective layer distributing reinforcement (10) and multi-functional bar split heads device cross bar (1) intersection carry out whole colligation, really
Protect firmly；
(3) Pass line adjustment, control: underfloor protective layer distributing reinforcement (9) and floor up-protective layer distributing reinforcement (10) all colligations complete
After, Sopwith staff (7) is stood on the screw (31) of composite control apparatus (3), utilizes level gauge (6) to observe, upper and lower rotary screw
(31) it is adjusted, makes screw (31) elevation of top reach floor plate top designed elevation；After floor plate top mark height determines, will regulation
Nut (32) rotates to being close on fixing nut (363), prevents adjusting nut (32) up and down, it is ensured that high to floor plate top mark
Error will not be produced because of external force factor in casting process；Screw (31) on floor plate face two ends control instrument has been regulated
Become post-tensioning to lead to line, regulate remaining screw (31) elevation of top in the middle of multi-functional bar split heads device, the like, complete whole building
The measurement levelling work of plate board face structure absolute altitude；
(4) floorslab concrete face is the most levelling: according to the top spiral shell between composite control apparatus (3) during floorslab concrete receipts face
Silk (31) plate top mark height control point uses darby (8) to carry out accurate levelling construction.
Floor bar protective layer the most according to claim 1 and structural elevation integrated control method, it is characterised in that: described
The cross bar (1) of multi-functional bar split heads device and underfloor protective layer distributing reinforcement (9), floor up-protective layer distributing reinforcement in step 2
(10) parallel, and cross bar (1) is equal with the height of floor up-protective layer distributing reinforcement (10).
Floor bar protective layer the most according to claim 2 and structural elevation integrated control method, it is characterised in that: described
When cross bar (1) replaces part floor up-protective layer distributing reinforcement (10) to arrange, multi-functional bar split heads device is in one line, adjacent horizontal stroke
Bar (1) overlap joint, lap-joint's colligation at least twice, it is ensured that firmly.
Floor bar protective layer the most according to claim 3 and structural elevation integrated control method, it is characterised in that: described
The lap of splice of adjacent crossbars (1) is not less than 100mm.
Floor bar protective layer the most according to claim 4 and structural elevation integrated control method, it is characterised in that: described
Reinforcing bar crotch (35) is placed on the position, cross point of underfloor protective layer distributing reinforcement (9).
Floor bar protective layer the most according to claim 5 and structural elevation integrated control method, it is characterised in that: described
Darby (8) a length of 2-3 rice.
7. complete the multi-functional bar horse of floor bar protective layer and structural elevation Comprehensive Control described in any of the above-described claim
Stool device, it is characterised in that: including cross bar (1), being provided with connection in the middle of supporting leg (2), cross bar (1) below cross bar (1) two ends has comprehensive
Close and control device (3)；Described composite control apparatus (3) includes and cross bar (1) upright supports connected vertically (34), upright supports
(34) top is by the vertical connecting screw (31) of fixing nut (33), and screw (31) is equipped adjusting nut (32), and column props up
Support (34) bottom is provided with reinforcing bar crotch (35) upward.
Multi-functional bar split heads device the most according to claim 7, it is characterised in that: described cross bar (1) a length of
1-1.5 rice.
Multi-functional bar split heads device the most according to claim 8, it is characterised in that: described reinforcing bar crotch (35) and column
Support (34) distance from bottom equal with the absolute altitude of underfloor protective layer distributing reinforcement (9).
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Cited By (6)
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| CN107288343A (en) * | 2017-07-02 | 2017-10-24 | 上海二十冶建设有限公司 | A kind of Vierendeel girder cushion block of concrete bar protective layer supplementary device |
| CN108518070A (en) * | 2018-05-31 | 2018-09-11 | 中铁十六局集团城市建设发展有限公司 | One kind having enough to meet the need general accurate adjustment control for cast-in-situ slabs tendon protective layer |
| CN108590042A (en) * | 2018-05-30 | 2018-09-28 | 五冶集团上海有限公司 | A kind of multi-functional stirrup for controlling cover to reinforcement and slab thickness |
| CN110056188A (en) * | 2019-03-22 | 2019-07-26 | 中铁二局集团有限公司 | A kind of construction method improving concrete slab surface evenness |
| CN110130587A (en) * | 2019-06-10 | 2019-08-16 | 浙江大华建设集团有限公司 | Double helix adjustable multifunctional split heads and floor dimensional control methods based on split heads |
| CN113047131A (en) * | 2021-03-18 | 2021-06-29 | 山西四建集团有限公司 | Embossed pavement construction method and embossing device |
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| CN110056188A (en) * | 2019-03-22 | 2019-07-26 | 中铁二局集团有限公司 | A kind of construction method improving concrete slab surface evenness |
| CN110130587A (en) * | 2019-06-10 | 2019-08-16 | 浙江大华建设集团有限公司 | Double helix adjustable multifunctional split heads and floor dimensional control methods based on split heads |
| CN110130587B (en) * | 2019-06-10 | 2024-07-30 | 浙江大华建设集团有限公司 | Double-screw adjustable multifunctional split heads and floor size control method based on split heads |
| CN113047131A (en) * | 2021-03-18 | 2021-06-29 | 山西四建集团有限公司 | Embossed pavement construction method and embossing device |
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| CN106121236B (en) | 2018-08-31 |
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