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 PDF

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Publication number
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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China
Prior art keywords
template
layer
bar
concrete
formwork
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CN201611040902.3A
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Chinese (zh)
Inventor
张睿
王卫东
白威
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China Third Metallurgical Group Co Ltd
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China Third Metallurgical Group Co Ltd
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Priority to CN201611040902.3A priority Critical patent/CN106437142A/en
Publication of CN106437142A publication Critical patent/CN106437142A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00Roofs; Roof construction with regard to insulation
    • E04B7/02Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36Forms, 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
    • E04G11/38Forms, 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/065Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
    • E04G17/0655Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts

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

A kind of cast-in-place pitched roof double template structure and pitched roof construction method
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.
CN201611040902.3A 2016-11-10 2016-11-10 Construction method and double-layer formwork structure for cast-in-situ slope roof Pending CN106437142A (en)

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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
CN110424640A (en) * 2019-07-29 2019-11-08 北京崇建工程有限公司 A kind of construction method of Sloping roof concrete structure
CN110714582A (en) * 2019-09-27 2020-01-21 中国一冶集团有限公司 M-shaped assembled slurry blocking steel plate for inclined roof and construction method thereof
CN111058631A (en) * 2020-02-29 2020-04-24 中国二十二冶集团有限公司 Concrete construction method for large-gradient inclined roof

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN110424640A (en) * 2019-07-29 2019-11-08 北京崇建工程有限公司 A kind of construction method of Sloping roof concrete structure
CN110714582A (en) * 2019-09-27 2020-01-21 中国一冶集团有限公司 M-shaped assembled slurry blocking steel plate for inclined roof and construction method thereof
CN111058631A (en) * 2020-02-29 2020-04-24 中国二十二冶集团有限公司 Concrete construction method for large-gradient inclined roof

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