CN106437142A - Construction method and double-layer formwork structure for cast-in-situ slope roof - Google Patents
Construction method and double-layer formwork structure for cast-in-situ slope roof Download PDFInfo
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- CN106437142A CN106437142A CN201611040902.3A CN201611040902A CN106437142A CN 106437142 A CN106437142 A CN 106437142A CN 201611040902 A CN201611040902 A CN 201611040902A CN 106437142 A CN106437142 A CN 106437142A
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- 238000009415 formwork Methods 0.000 title claims abstract description 63
- 238000010276 construction Methods 0.000 title claims abstract description 38
- 238000011065 in-situ storage Methods 0.000 title abstract 2
- 239000002344 surface layer Substances 0.000 claims description 68
- 239000010410 layer Substances 0.000 claims description 36
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 230000002787 reinforcement Effects 0.000 claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 230000011218 segmentation Effects 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 10
- 210000003205 muscle Anatomy 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 210000003141 lower extremity Anatomy 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 claims description 3
- 210000005056 cell body Anatomy 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000009958 sewing Methods 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 239000002023 wood Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000011120 plywood Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/38—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for plane ceilings of concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to a construction method and a double-layer formwork structure for a cast-in-situ slope roof. The double-layer formwork structure comprises a supporting rod system, a formwork keel, a bottom formwork, a surface formwork and counter-pull positioning waterproof bolts. The bottom of the formwork keel is fixedly supported by the supporting rod system; the bottom formwork is laid on the upper surface of the formwork keel, the surface formwork is parallel to the bottom formwork, and a distance between the surface formwork and the bottom formwork is equal to the thickness of a concrete pouring layer of the slope roof; the bottom formwork and the surface formwork are positioned through the counter-pull positioning waterproof bolts; the surface formwork is formed by a plurality of segmented surface formworks at intervals, and a trough formed by ends of the adjacent segmented surface formworks and the bottom formwork serves as a vibration tamping trough for segmented pouring of concrete. By adoption of the double-layer formwork structure and a segmented concrete pouring and vibration tamping method, the problem of proneness to slipping of concrete in construction of the slope roof is solved, structural compactness, high section size precision and high surface quality of concrete after pouring and tamping are achieved, and the construction method is simple and feasible.
Description
Technical field
The present invention relates to cast-in-place pitched roof technical field of construction, more particularly, to a kind of cast-in-place pitched roof double template structure and
Pitched roof construction method.
Background technology
The variation selecting with the development of building industry, people's life requirement, in recent years, presents in architectural design
Many new and original sloping roof structures.But selection of construction method is improper in construction due to pitched roof, easily causes concrete and pour
Build leakiness, easily cause seepage.
Traditional pitched roof refers to the pitched roof that the gradient is at 25 °～60 °, be usually taken in construction installation runway bottom side template or
Carry out pouring after additional layer steel wire on reinforcing bar face, make real, but when the gradient is steeper, often result in mixed in process of vibrating
The landing of solidifying soil, segregation phenomenon, make concrete can only on slope under no constraint is in landing state natural molding, therefore coagulation
Soil pours density and is difficult to be controlled, construction quality difficult to reach Expected Results, stay to concrete structure construction easily ooze,
The hidden danger of leakage and common quality defect.
Content of the invention
The invention provides a kind of cast-in-place pitched roof double template structure and pitched roof construction method are it is adaptable to the gradient exists
25 °～60 ° of pitched roof construction；Method by being carried out concreting, being vibrated using double template structure, segmentation, solves
A difficult problem for concrete easy landing in pitched roof construction, after casting and compacting of concrete molding, structure is closely knit, sectional dimension high precision, surface
Quality is good, and construction method is simple.
In order to achieve the above object, the present invention employs the following technical solutions realization：
A kind of cast-in-place pitched roof double template structure, including braced bar system, formwork keel, bottom template, surface layer template and
To drawing locating water-stopping bolt；Described formwork keel is laid along roof is high to inclination, and its gradient is consistent with the gradient of pitched roof, its
Bottom is supported by braced bar system and fixes；Bottom template is laid on formwork keel upper surface, and surface layer template is located on bottom template
And be arranged in parallel with bottom template, distance between the two is equal to the thickness of pitched roof concrete lift；Bottom template and face
By to drawing locating water-stopping bolt to position between layer template, and pass through bottom spiral shell respectively in the outside of bottom template and surface layer template
Female and top nut check is fixed；Surface layer template is made up of multiple spaced segmentation surface layer templates, adjacent sectional surface layer mould
The groove that the vibrates when cell body being formed between plate end and bottom template pours as concrete segmentation.
Described to drawing locating water-stopping bolt by drawing water-proof bolt and location-plate to form, to drawing in the middle part of the bolt of water-proof bolt
It is provided with seal plate, both sides set location-plate；Go back between the location-plate drawing locating water-stopping bolt both sides and bottom template, surface layer template
It is respectively equipped with the pad matching with bolt；The distance between 2 location-plate lateral surface are equal to pitched roof concrete lift
- 2 times of spacer thicknesses of thickness.
Based on the pitched roof construction method of described cast-in-place pitched roof double template structure, comprise the steps：
1) set up braced bar system on roof first, braced bar system is made up of cross bar, vertical rod and connection fixture；
2) after the completion of braced bar system is set up, lay formwork keel at its top, shape longitudinally and is laterally laid on formwork keel edge
Become fenestral fabric, the height of the adjustment each vertical rod of braced bar system is it is ensured that the flatness of formwork keel upper surface and gradient meet
Require；
3) lay bottom template on formwork keel, bottom template opens up through hole, be used for wearing to drawing locating water-stopping spiral shell
Bolt；
4) after the completion of bottom model sheetinstallat, lay bar-mat reinforcement at an upper portion thereof, bar-mat reinforcement is formed by reinforcing bar binding；To drawing positioning
Pad is installed outside the side location-plate of water-proof bolt, after the completion of bar-mat reinforcement laying, by be provided with pad to drawing locating water-stopping
Bolt one end passes below bottom template, is fixed with bottom nut；
5) by surface layer model sheetinstallat to the other end drawing locating water-stopping bolt, and fixed with top nut；Each segmentation face
Layer template is successively installed from bottom to top, and interval setting is to reserve the groove that vibrates；
6) concrete segmentation can be carried out after the whole installation of surface layer template to pour, pour by layer from bottom to up, every layer
The groove that vibrates all passing through its top after concreting carries out pouring vibrating；One layer concrete pours and completes rear enclosed portion thereon
Vibrate groove, then carries out pouring, vibrating of last layer concrete, until whole pitched roof all pours and completes；Treat monolithic concrete
After reaching intensity, remove double template structure.
A kind of pitched roof construction method specifically includes following steps：
1) formwork keel is made up of Two bors d's oeuveres flitch, and the flitch being 40mm × 60mm or 50mm × 50mm by 2 specifications is simultaneously
Row composition, the space batten between Two bors d's oeuveres flitch stoppers；The arrangement pitch of formwork keel determines according to surface layer template modulus level；
2) fixed using iron nail between bottom template and formwork keel；After the completion of bottom model sheetinstallat, in bottom template
Line, then by drawing locating water-stopping bolt laying spacing to draw a little, at anchor point, open up bolt hole with electric hammer；Draw locating water-stopping spiral shell
The arrangement pitch of bolt is 1000mm～1500mm；To be drawn to drawing locating water-stopping bolt to wear in bottom template by bolt hole
Add pad between the location-plate of locating water-stopping bolt and bottom template, and fixed by bottom nut；
3) bar-mat reinforcement laying two-layer, will constitute the reinforcing bar binding of bar-mat reinforcement firmly, with prevent during disturbing concrete because collision,
It is loose that vibration makes to tie up button, causes reinforcing bar displacement or dew muscle；Stop protective layer by design code during assembling reinforcement, and with pour mixed
Solidifying soil has the cement of identical match ratio, cushion block made by mortar, and reinforcing bar is paved；
In order to avoid during disturbing concrete, top surface reinforcing bar sink it is ensured that the effective depth of bar-mat reinforcement, in two-layer steel
Extension supporting supporting steel bar between muscle net, support supporting steel bar diameter >=As bar diameter >=Φ 12mm, support supporting steel bar
Spacing≤800mm × 800mm, as bar diameter ＜ Φ 12, support supporting steel bar spacing≤500mm × 500mm；Along same
Support supporting steel bar on direction is no less than 2 roads, and outermost support horse step on the set location of the muscle distance away from reinforcing bar end≤
150mm；Supporting steel bar is fixed using spot welding mode with upper and lower layer reinforcing bar contact point, simultaneously in its pad scope inner rim 2～3
The upper and lower layer reinforcing bar in road is also adopted by spot welding and fixes, with stiffener net stability in the large；Carry out hidden after the completion of bar-mat reinforcement laying
Engineering supervision is checked and accepted；
4) segmentation surface layer template is pre-formed through setting-out；When prefabricated, segmentation surface layer template two side add 200mm～
The side pressure Os Draconis of 300mm length, the specification of side pressure Os Draconis is 30mm × 40mm；Between the length modulus ratio formwork keel of surface layer template
The little 10mm of clear distance, and each remaining 5mm in two ends, lay in order to surface layer template；During installation, by the lower limb of surface layer template and template
The lower limb alignment of Os Draconis, by iron nail by the side pressure bone of surface layer template and formwork keel stickfast；
Surface layer template in advance by opening up out bolt hole to drawing locating water-stopping bolt to lay spacing, during installation, to drawing positioning
Add pad between the location-plate of water-proof bolt and surface layer template, then tighten top nut；Adhesive tape is used at surface layer template connecting sewing
Paper is obturaged；
5) in lower floor's surface layer template of the corresponding groove that vibrates, edge sets the high baffle plate of 50cm temporarily, it is to avoid when pouring, aggregate is slided
Fall；During casting concrete, with oblique eaves as starting point, carry out pouring of ground floor formwork structure within one week around roofing, poured
In journey using hand hammer tap check whether pour closely knit；After having poured one layer, correspondence is vibrated after groove is closed and carry out last layer again
The pouring of formwork structure；So circulate, casting concrete step by step, until the concrete of whole pitched roof all pours end.
For the pitched roof in large-scale house, the speed pouring according to every layer concrete before construction, calculate the time of pouring；
Add retarder if necessary, it is to avoid before concrete overlap joint, produce cold seam.
Surface layer template reaches 1.2N/mm in concrete strength2When above, row is removed again, bottom template then basis《Concrete
Structural Engineering construction quality accident specification》In have the regulation of beam-slab template form removal, with test cube in the same condition pressure testing intensity as foundation, really
Determine striking time
Compared with prior art, the invention has the beneficial effects as follows：
1) adopt double template structure in the present invention, pass through to drawing locating water-stopping bolt that double template structure is carried out simultaneously
Positioning, can effectively improve casting and compacting of concrete efficiency of construction, it is to avoid the hidden leakage defect leading to because of xoncrete structure degree of compaction deficiency,
Guarantee concrete formation quality；
2) the concrete pitched roof sectional dimension high precision after molding, surface quality are good；
3) double template structure is simple, and construction method is easily operated；
4) reducing the concrete material loss causing because of landing, saving artificial, thus saving construction cost.
Brief description
Fig. 1 is the structural representation of double template structure of the present invention.
Fig. 2 is double template structure node schematic diagram in pitched roof construction of the present invention.
Fig. 3 is the flow chart of pitched roof construction method of the present invention.
In figure：1. braced bar system 2. formwork keel 3. bottom template 4. surface layer template 5. is to drawing locating water-stopping bolt
51. bolt, 52. seal plate, 53. location-plate, 6. pad, 7. bottom nut, 8. top nut 9. concrete lift 10. shakes
Smash groove
Specific embodiment
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described further：
As shown in Figure 1 and Figure 2, a kind of cast-in-place pitched roof double template structure of the present invention, including braced bar system 1, template
Os Draconis 2, bottom template 3, surface layer template 4 and to drawing locating water-stopping bolt 5；Described formwork keel 2 is laid along roof is high to inclination,
Its gradient is consistent with the gradient of pitched roof, and its bottom supports fixation by braced bar system 1；Bottom template 3 is laid on formwork keel 2
Upper surface, surface layer template 4 is located on bottom template 3 and is be arranged in parallel with bottom template 3, and distance between the two is equal to slope room
The thickness of surface concrete LIFT 9；Pass through to drawing locating water-stopping bolt 5 to position between bottom template 3 and surface layer template 4, and
Bottom template 3 is locked by bottom nut 7 and top nut 8 respectively with the outside of surface layer template 4；Surface layer template 4 is by many
Individual spaced segmentation surface layer template composition, the cell body being formed between adjacent sectional surface layer template end and bottom template 3 is used
Make the groove 10 that vibrates when concrete segmentation pours.
Described to drawing locating water-stopping bolt 5 by drawing water-proof bolt and location-plate 53 to form, to the bolt drawing water-proof bolt
It is provided with seal plate 52, both sides set location-plate 53 in the middle part of in the of 51；To draw the location-plate 53 of locating water-stopping bolt 5 both sides and bottom template 3,
The pad 6 matching with bolt 51 is further respectively had between surface layer template 4；The distance between 2 location-plate 53 lateral surface are equal to
- 2 times of pads of the thickness of pitched roof concrete lift 96 thickness.
As shown in figure 3, the pitched roof construction method based on described cast-in-place pitched roof double template structure, walk including following
Suddenly：
1) set up braced bar system 1 on roof first, braced bar system 1 is made up of cross bar, vertical rod and connection fixture；
2) after the completion of braced bar system 1 is set up, lay formwork keel 2 at its top, formwork keel 2 is along longitudinal and horizontal laying
Form fenestral fabric, the height of the adjustment each vertical rod of braced bar system 1 is it is ensured that the flatness of formwork keel 2 upper surface and gradient
Meet the requirements；
3) lay bottom template 3 on formwork keel 2, bottom template 3 opens up through hole, be used for wearing to drawing locating water-stopping
Bolt 5；
4) after bottom template 3 installation, lay bar-mat reinforcement at an upper portion thereof, bar-mat reinforcement is formed by reinforcing bar binding；Fixed to drawing
Pad 6 is installed in side location-plate 53 outside of position water-proof bolt 5, after the completion of bar-mat reinforcement laying, will be provided with the fixed to drawing of pad 6
Position water-proof bolt 5 one end passes below bottom template 3, fixing with bottom nut 7；
5) surface layer template 4 is arranged on to the other end drawing locating water-stopping bolt 5, and fixing with top nut 8；Each segmentation
Surface layer template is successively installed from bottom to top, and interval setting is to reserve the groove 10 that vibrates；
6) concrete segmentation can be carried out after the whole installation of surface layer template 4 to pour, pour by layer from bottom to up, every layer
The groove 10 that vibrates all passing through its top after concreting carries out pouring vibrating；One layer concrete pours and completes rear enclosed portion thereon
The groove 10 that vibrates, then carry out pouring, vibrating of last layer concrete, until whole pitched roof all pours and completes；Treat overall mixed
After solidifying soil reaches intensity, remove double template structure.
A kind of pitched roof construction method specifically includes following steps：
1) formwork keel 2 is made up of Two bors d's oeuveres flitch, and the flitch being 40mm × 60mm or 50mm × 50mm by 2 specifications is simultaneously
Row composition, the space batten between Two bors d's oeuveres flitch stoppers；The arrangement pitch of formwork keel 2 determines according to surface layer template 4 modulus level；
2) fixed using iron nail between bottom template 3 and formwork keel 2；After bottom template 3 installation, in bottom template
Rule on 3, then by drawing locating water-stopping bolt 5 laying spacing to draw a little, at anchor point, open up bolt hole with electric hammer；To drawing positioning
The arrangement pitch of water-proof bolt 5 is 1000mm～1500mm；Will be to drawing locating water-stopping bolt 5 to wear bottom mould by bolt hole
On plate 3, draw and add pad 6 between the location-plate of locating water-stopping bolt 5 and bottom template 3, and fixing by bottom nut 7；
3) bar-mat reinforcement laying two-layer, will constitute the reinforcing bar binding of bar-mat reinforcement firmly, with prevent during disturbing concrete because collision,
It is loose that vibration makes to tie up button, causes reinforcing bar displacement or dew muscle；Stop protective layer by design code during assembling reinforcement, and with pour mixed
Solidifying soil has the cement of identical match ratio, cushion block made by mortar, and reinforcing bar is paved；
In order to avoid during disturbing concrete, top surface reinforcing bar sink it is ensured that the effective depth of bar-mat reinforcement, in two-layer steel
Extension supporting supporting steel bar between muscle net, supportsAs bar diameter >=Φ 12mm, support supporting steel bar
Spacing≤800mm × 800mm, as bar diameter ＜ Φ 12, support supporting steel bar spacing≤500mm × 500mm；Along same
Support supporting steel bar on direction is no less than 2 roads, and outermost support horse step on the set location of the muscle distance away from reinforcing bar end≤
150mm；Supporting steel bar is fixed using spot welding mode with upper and lower layer reinforcing bar contact point, simultaneously in its pad scope inner rim 2～3
The upper and lower layer reinforcing bar in road is also adopted by spot welding and fixes, with stiffener net stability in the large；Carry out hidden after the completion of bar-mat reinforcement laying
Engineering supervision is checked and accepted；
4) segmentation surface layer template is pre-formed through setting-out；When prefabricated, segmentation surface layer template two side add 200mm～
The side pressure Os Draconis of 300mm length, the specification of side pressure Os Draconis is 30mm × 40mm；The length modulus ratio formwork keel 2 of surface layer template 4 it
Between the little 10mm of clear distance, and each remaining 5mm in two ends, lay in order to surface layer template 4；During installation, by the lower limb of surface layer template 4 with
The lower limb alignment of formwork keel 2, by iron nail by the side pressure bone of surface layer template 4 and formwork keel 2 stickfast；
Surface layer template 4 by drawing locating water-stopping bolt 5 laying spacing to open up out bolt hole, during installation, is being determined to drawing in advance
Add pad 6 between the location-plate of position water-proof bolt 5 and surface layer template 4, then tighten top nut 8；At surface layer template 4 connecting sewing
Obturaged with adhesive tape；
5) in lower floor's surface layer template 4 of the corresponding groove 10 that vibrates, edge sets the high baffle plate of 50cm temporarily, it is to avoid aggregate when pouring
Landing；During casting concrete, with oblique eaves as starting point, carry out pouring of ground floor formwork structure within one week around roofing, pour
During using hand hammer tap check whether pour closely knit；After having poured one layer, correspondence is vibrated on carrying out again after groove 10 is closed
The pouring of one layer of formwork structure；So circulate, casting concrete step by step, until the concrete of whole pitched roof all pours knot
Bundle.
For the pitched roof in large-scale house, the speed pouring according to every layer concrete before construction, calculate the time of pouring；
Add retarder if necessary, it is to avoid before concrete overlap joint, produce cold seam.
Surface layer template 4 reaches 1.2N/mm in concrete strength2When above, row is removed again, bottom template 3 then basis《Coagulation
Soil structure engineering construction quality acceptance specification》In have the regulation of beam-slab template form removal, with test cube in the same condition pressure testing intensity as foundation,
Determine striking time
Other related description of pitched roof construction method of the present invention and the selection of material：
1) bottom template 3 is made up of beam bottom board, side form and template die；Wherein：
, all using 18mm thickness multilamellar wood plywood, beam bottom board lower synbeam length direction arranges two and (works as deck-siding for beam bottom board, side form
Arrange 3 more than or equal to during 350mm) 50 × 100mm wood stupefied, wood stupefied fixed with bed die in advance, and beam side, using double frame pipes, passes through
Fixing bolt is fixed.
Template die adopts 18mm thickness wood plywood, and template die bottom sets little wood stupefied, and spacing is 350mm, and little wood stupefied divides into big wood stupefied,
Spacing is 900mm；Big wood stupefied divides into frame pipe, and quick disconnecting joint is installed on frame pipe top, and frame tube pitch is 900mm.
2) surface layer template 4 adopts plywood, and specification is 915mm × 915mm × 18mm.
3) to drawing locating water-stopping bolt 5 to adoptSized bolt, seal plate 53 a size of 80mm × 80mm × 4mm, only
Full weld between water plate 53 and bolt 51；Bolt 51 two ends are joined butterfly and are buckled and bottom nut 7, top nut 8.
4) braced bar system 1 adopts all round victory scaffold, and column isAdjustable jack joined by steel pipe, by technical specification
Arrangement horizontal brace and stay bolt, jacking gap timber wedge is tightly filled in.
5) less for pitched roof thickness of slab, the closeer feature of reinforcing bar, preferably using pea gravel concreten it is easy to pour closely knit.
6) sand during sand preferably adopts, and meet relevant specification regulation.
7) for the pitched roof that arrangement of bar is closeer, can adoptSmall vibrating rod vibrates.
Design grade is less than to 25 ° of pitched roof, in casting concrete, because aggregate sliding force is less,
Carry out vibrating after the construction method installation monolayer bottom surface template that therefore can refer to beam slab, pour；60 ° are more than for design grade
Pitched roof then can refer to shear wall construction method install double template after carry out pouring smashing.The present invention is mainly suitable for design slope
Degree is constructed in 25 °～60 ° pitched roofs.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (6)
1. a kind of cast-in-place pitched roof double template structure is it is characterised in that include braced bar system, formwork keel, bottom template, face
Layer template and to drawing locating water-stopping bolt；Described formwork keel is laid along roof is high to inclination, the slope of its gradient and pitched roof
Degree is consistent, and its bottom is supported by braced bar system and fixes；Bottom template is laid on formwork keel upper surface, and surface layer template is located at bottom
It is arranged in parallel on template and with bottom template, distance between the two is equal to the thickness of pitched roof concrete lift；Bottom
Pass through between template and surface layer template, to drawing locating water-stopping bolt to position, and to lead to respectively in the outside of bottom template and surface layer template
Cross bottom nut and top nut check is fixed；Surface layer template is made up of multiple spaced segmentation surface layer templates, adjacent point
The groove that the vibrates when cell body being formed between section surface layer template end and bottom template pours as concrete segmentation.
2. a kind of cast-in-place pitched roof double template structure according to claim 1 it is characterised in that described to drawing positioning to stop
Timber bolt, by drawing water-proof bolt and location-plate to form, is provided with seal plate to drawing in the middle part of the bolt of water-proof bolt, both sides setting position
Plate；Match with bolt to drawing to further respectively have between the location-plate of locating water-stopping bolt both sides and bottom template, surface layer template
Pad；The distance between 2 location-plate lateral surface are equal to -2 times of spacer thicknesses of thickness of pitched roof concrete lift.
3. the pitched roof construction method based on pitched roof double template structure cast-in-place described in claim 1 is it is characterised in that include
Following steps：
1) set up braced bar system on roof first, braced bar system is made up of cross bar, vertical rod and connection fixture；
2) after the completion of braced bar system is set up, lay formwork keel at its top, formwork keel forms net along longitudinal and horizontal laying
Grating texture, the height of the adjustment each vertical rod of braced bar system is it is ensured that the flatness of formwork keel upper surface and gradient meet the requirements；
3) lay bottom template on formwork keel, bottom template opens up through hole, be used for wearing to drawing locating water-stopping bolt；
4) after the completion of bottom model sheetinstallat, lay bar-mat reinforcement at an upper portion thereof, bar-mat reinforcement is formed by reinforcing bar binding；To drawing locating water-stopping
Pad is installed outside the side location-plate of bolt, after the completion of bar-mat reinforcement laying, by be provided with pad to drawing locating water-stopping bolt
One end passes below bottom template, is fixed with bottom nut；
5) by surface layer model sheetinstallat to the other end drawing locating water-stopping bolt, and fixed with top nut；Each segmentation surface layer mould
Plate is successively installed from bottom to top, and interval setting is to reserve the groove that vibrates；
6) concrete segmentation can be carried out after the whole installation of surface layer template to pour, pour by layer from bottom to up, every layer of coagulation
Soil all passes through its top groove that vibrates after pouring carries out pouring vibrating；One layer concrete pours and completes rear enclosed the vibrating of portion thereon
Groove, then carry out pouring, vibrating of last layer concrete, until whole pitched roof all pours and completes；Treat that monolithic concrete reaches
After intensity, remove double template structure.
4. a kind of pitched roof construction method according to claim 3 is it is characterised in that specifically include following steps：
1) formwork keel is made up of Two bors d's oeuveres flitch, i.e. arranged side by side group of the flitch for 40mm × 60mm or 50mm × 50mm by 2 specifications
Become, the space batten between Two bors d's oeuveres flitch stoppers；The arrangement pitch of formwork keel determines according to surface layer template modulus level；
2) fixed using iron nail between bottom template and formwork keel；After the completion of bottom model sheetinstallat, in bottom mould lining out,
Again by drawing locating water-stopping bolt laying spacing to draw a little, at anchor point, open up bolt hole with electric hammer；Draw locating water-stopping bolt
Arrangement pitch is 1000mm～1500mm；Positioning will be drawn to drawing locating water-stopping bolt to wear in bottom template by bolt hole
Add pad between the location-plate of water-proof bolt and bottom template, and fixed by bottom nut；
3) bar-mat reinforcement laying two-layer, by the reinforcing bar binding constituting bar-mat reinforcement firmly, to prevent during disturbing concrete because of collision, vibration
Make to tie up button loose, cause reinforcing bar displacement or dew muscle；Stop protective layer by design code during assembling reinforcement, and with casting concrete
There is the cement of identical match ratio, cushion block made by mortar, reinforcing bar is paved；
In order to avoid during disturbing concrete, top surface reinforcing bar sink it is ensured that the effective depth of bar-mat reinforcement, in two-layer bar-mat reinforcement
Between extension supporting supporting steel bar,As bar diameter >=Φ 12mm, support between supporting steel bar
Away from≤800mm × 800mm, as bar diameter ＜ Φ 12, support the spacing≤500mm × 500mm of supporting steel bar；In the same direction
On support supporting steel bar be no less than 2 roads, and outermost supports horse to step on the distance≤150mm away from reinforcing bar end for the set location of muscle；
Supporting steel bar is fixed using spot welding mode with upper and lower layer reinforcing bar contact point, simultaneously its pad scope inner rim 2～3 road upper,
Lower floor's reinforcing bar is also adopted by spot welding and fixes, with stiffener net stability in the large；Carry out concealed work inspection after the completion of bar-mat reinforcement laying
Examination is received；
4) segmentation surface layer template is pre-formed through setting-out；When prefabricated, segmentation surface layer template two side adds 200mm～300mm length
Side pressure Os Draconis, the specification of side pressure Os Draconis is 30mm × 40mm；Clear distance between the length modulus ratio formwork keel of surface layer template
Little 10mm, and each remaining 5mm in two ends, lay in order to surface layer template；During installation, by the lower limb of surface layer template and formwork keel
Lower limb aligns, by iron nail by the side pressure bone of surface layer template and formwork keel stickfast；
Surface layer template in advance by opening up out bolt hole to drawing locating water-stopping bolt to lay spacing, during installation, to drawing locating water-stopping
Add pad between the location-plate of bolt and surface layer template, then tighten top nut；Sealed with adhesive tape at surface layer template connecting sewing
Sternly；
5) in lower floor's surface layer template of the corresponding groove that vibrates, edge sets the high baffle plate of 50cm temporarily, it is to avoid aggregate landing when pouring；Pour
When building concrete, with oblique eaves as starting point, carry out pouring of ground floor formwork structure within one week around roofing, adopt in casting process
With hand hammer tap check whether pour closely knit；After having poured one layer, correspondence is vibrated after groove is closed and carry out last layer template knot again
The pouring of structure；So circulate, casting concrete step by step, until the concrete of whole pitched roof all pours end.
5. a kind of pitched roof construction method according to claim 3 is it is characterised in that pitched roof for large-scale house,
The speed being poured according to every layer concrete before construction, calculates the time of pouring；Add retarder if necessary, it is to avoid concrete is taken
Cold seam is produced before connecing.
6. a kind of pitched roof construction method according to claim 3 is it is characterised in that surface layer template reaches in concrete strength
To 1.2N/mm2When above, row is removed again, bottom template then basis《Concrete structure engineering construction quality accident specification》In have beam
The regulation of plate template removing, with test cube in the same condition pressure testing intensity as foundation, determines striking time.
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| CN201611040902.3A CN106437142A (en) | 2016-11-10 | 2016-11-10 | Construction method and double-layer formwork structure for cast-in-situ slope roof |
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| CN106939616A (en) * | 2017-05-17 | 2017-07-11 | 中国航天建设集团有限公司 | Steel plate structure and assembled soil nail wall |
| CN107605107A (en) * | 2017-09-18 | 2018-01-19 | 中建八局第三建设有限公司 | A kind of method for controlling pitched roof concrete construction quality |
| CN109577538A (en) * | 2018-12-12 | 2019-04-05 | 湖南易兴建筑有限公司 | Roof construction method |
| CN110017020A (en) * | 2019-04-22 | 2019-07-16 | 上海建工一建集团有限公司 | High building concrete structure point roof template system and construction method |
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