CN109441098B - Early-dismantling formwork system and construction method thereof - Google Patents
Early-dismantling formwork system and construction method thereof Download PDFInfo
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- CN109441098B CN109441098B CN201811455855.8A CN201811455855A CN109441098B CN 109441098 B CN109441098 B CN 109441098B CN 201811455855 A CN201811455855 A CN 201811455855A CN 109441098 B CN109441098 B CN 109441098B
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- 238000009415 formwork Methods 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 55
- 239000010959 steel Substances 0.000 claims description 55
- 239000002023 wood Substances 0.000 claims description 24
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000465 moulding Methods 0.000 abstract description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000007306 turnover Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/02—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for rooms as a whole by which walls and floors are cast simultaneously, whole storeys, or whole buildings
-
- 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
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
-
- 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
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
- E04G11/085—End form panels for walls
-
- 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
-
- 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
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/486—Dropheads supporting the concrete after removal of the shuttering; Connecting means on beams specially adapted for dropheads
-
- 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
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses an early-dismantling formwork system and a construction method thereof, wherein the early-dismantling formwork system comprises an inner wallboard system, an outer wallboard system, a corner formwork and a floor carrier plate system; the floor support plate system comprises a floor plate template and an early dismounting device, wherein the early dismounting device comprises a vertical independent support rod, an early dismounting support head and an early dismounting beam, the early dismounting support head is clamped at the top of the vertical independent support rod, and the top of the early dismounting support head is attached to the lower surface of the early dismounting beam; the early-dismantling beams are attached to the lower surface of the floor slab template at intervals in parallel; the inner wallboard system comprises two first wall column templates, a first back ridge, a top plate connecting template, a connecting lock catch and a split bolt, wherein the first back ridge and the top plate connecting template are arranged on the outer side face of the first wall column templates, the lower end of the first wall column templates is arranged on a lower floor slab, and the upper end of the first wall column templates is connected with the lower end of the top plate connecting template through the connecting lock catch. The invention has good molding effect, is not easy to deform, has reliable template system and meets the requirements of high-strength grade concrete and winter application.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an early-dismantling formwork system and a construction method thereof.
Background
In the existing one-step forming early-dismantling formwork construction technology, an early-dismantling formwork system with mature technology is mainly an aluminum alloy formwork system. Because the aluminum alloy template plates are connected by pin sheets, the difficulty in construction is high.
At present, the main problems of using aluminum template systems are: firstly, when the structure changes, such as wall thickness, layer height and the like, only the mould can be redesigned and matched, and the mould which is not suitable for the structure change can be supplemented and replaced, so that the mould utilization rate is low; secondly, the aluminum template has high heat conductivity coefficient, which is not beneficial to high-strength grade concrete and winter construction; thirdly, in the first use process of the aluminum alloy template, a specially prepared release agent is required due to the chemical activity of aluminum per se so as to ensure the appearance quality of the concrete surface.
Disclosure of Invention
The invention aims to provide an early-dismantling formwork system and a construction method thereof, which are used for solving the technical problems that the wall column beam slab structure is not easy to form at one time at the present stage, the on-site formwork distribution is inconvenient, the concrete forming effect is unstable, and the high-strength grade concrete and the winter construction requirements cannot be met.
In order to achieve the above purpose, the invention adopts the following technical scheme: the invention provides an early-dismantling formwork system, which comprises an inner wallboard system, an outer wallboard system, a corner formwork and a floor support plate system;
the building carrier plate system comprises a floor plate template and an early dismounting device, wherein the early dismounting device comprises a vertical independent supporting rod, an early dismounting supporting head and an early dismounting beam, the early dismounting supporting head is clamped and arranged at the top of the vertical independent supporting rod, and the top of the early dismounting supporting head is attached to the lower surface of the early dismounting beam;
the early-dismantling beams are attached to the lower surface of the floor slab template at intervals in parallel;
the inner wallboard system comprises two first wall column templates, a first back ridge, a top plate connecting template, a connecting lock catch and a split bolt, wherein the first back ridge is arranged on the outer side face of the first wall column templates;
the upper end of the top plate connecting template is propped against the lower surface of the floor slab template; the first wall column templates at the two sides of the inner wall are connected through split bolts;
the external wall panel system comprises a first wall column template arranged indoors, a first back edge arranged on the outer side surface of the first wall column template, a second wall column template arranged outdoors, a second back edge arranged on the outer side surface of the second wall column template, a split bolt, a vertical reinforcing steel pipe, an outer wall bearing plate and a positioning hanging seat, wherein the lower end of the first wall column template is arranged on a lower floor slab, the upper end of the first wall column template is connected with the lower end of a top plate connecting template through a connecting lock catch, and the upper end of the top plate connecting template is propped against the lower surface of the floor slab template;
the positioning hanging seat is arranged on the outer wall of the lower-layer building through an embedded part, an outer wall bearing plate is arranged at the top of the positioning hanging seat, the lower end of the second wall column template is arranged on the outer wall bearing plate, and the first wall column template and the second wall column template are connected through split bolts; the outer side face of the second wall column template is also provided with a vertical reinforced steel pipe.
Further, the corner templates include an external corner template and an internal corner template.
Further, the external corner template comprises an equilateral L-shaped template and two vertical ribs which are respectively and symmetrically attached to the inner side surface of the opening of the equilateral L-shaped template; the internal corner template comprises a steel template, steel ribs arranged on the periphery of the steel template and stiffening rib plates.
Further, a round hole is formed in the second back edge, and the vertical reinforcing steel pipe is fixedly connected with the second back edge on the outer side face of the second wall column template through a plurality of reinforcing hooks.
Further, the reinforcing hook is a self-locking drag hook, and the tail part of the reinforcing hook is in a hook shape.
Further, the inner wallboard system also comprises a wall end beam bottom lock catch; the wall end beam bottom lock catch comprises a screw, a first stop block, a nut, a second stop block and a butterfly buckle, wherein the first stop block is arranged on one side of the screw and is fixed through the nut arranged on the outer side face of the first stop block; the second stop block is arranged on the other side of the screw rod and is fixed through a butterfly buckle arranged on the outer side face of the second stop block.
Further, an adjustable lock catch is arranged between the top plate connecting template and the wall column template; the adjustable lock catch comprises a screw rod, hooks and butterfly nuts, wherein each hook comprises a sleeve section and lock hooks arranged on the sleeve section, and the hooks are symmetrically sleeved on two sides of the screw rod through the sleeve sections. When the novel back edge structure is used, the space between two symmetrically arranged hooks is reduced by rotating the butterfly nut, so that the back edge of the floor slab template or the wall column template is clamped and fixed with the back edge of the common template.
Further, the first wall column template comprises a wood-plastic panel, a steel frame arranged at the peripheral edge position of the wood-plastic panel and stiffening ribs welded on the steel frame.
Further, the top plate connecting template comprises a wood-plastic panel, a steel frame arranged at the peripheral edge position of the wood-plastic panel and stiffening ribs welded on the steel frame.
Further, the second wall column template comprises a wood-plastic panel, a steel frame arranged at the peripheral edge position of the wood-plastic panel and stiffening ribs welded on the steel frame.
Further, the thickness of the wood-plastic panel is 13-20mm; the wood plastic panel is a wood plastic panel template, and the surface of the wood plastic panel template is covered with a hard plastic surface with the thickness of 2mm.
Further, the frame is 64mm in height and 25mm in width.
The invention also provides a construction method of the early-dismantling formwork system, which comprises the following specific steps:
step one, carrying out template matching deepening design according to a structural design drawing; preparing materials;
step two, processing a first wall column template, a second wall column template, a top plate connecting template and a floor slab template; numbering after finishing the template processing, and transporting to the site;
thirdly, leveling, paying off and positioning corners, binding the wall steel bars, and entering the next procedure after acceptance inspection;
step four, installing a vertical template; placing a wall column template positioning line, performing elevation measurement, and installing a standard wall column template; when the nonstandard layer is constructed, checking verticality and flatness after installing a nonstandard wood template;
s1, constructing an inner wall system, wherein the bottom of a first wall column template is arranged on a lower floor slab, the upper end of the first wall column template is connected with the lower end of a top plate connecting template through a connecting lock catch, adjacent wall column templates are connected through connecting lock catches, and the first wall column templates on two sides of a wall are connected through split bolts; synchronously erecting an external corner template and an internal corner template;
the outer side of the first wall column template is provided with a first back edge which is fixed through a split bolt;
s2, constructing an outer wall system, and pre-burying positioning steel bars in advance when constructing the next floor; exposing the embedded positioning steel bars after the pouring of the lower concrete is completed and the outer wall template is removed;
when the outer wall template is installed, a positioning hanging seat is installed firstly and is connected with the embedded positioning steel bars through bolts, the top of the positioning hanging seat is provided with an outer wall bearing plate, and the positioning hanging seat is fixed with a second wall column template through the outer wall bearing plate; the first wall column templates and the second wall column templates on two sides of the building outer wall are connected through split bolts; setting a second back edge, wherein the second back edge is fixed through a split bolt; installing a vertical reinforcing steel pipe on the outer side surface of the second wall column template; synchronously erecting an external corner template and an internal corner template;
step five, installing an early-dismantling beam, installing a floor slab template, and checking the flatness of the floor slab template and the verticality and flatness of the composite wall column;
the floor slab template is hard spliced by taking the early-dismantling beam as a support, and no gap is reserved; the early-dismantling beam takes the early-dismantling supporting head as a support, and is tightly attached to the floor slab template when the early-dismantling supporting head is in an installation state; the templates around the floor are arranged at the upper end of the top plate connecting template and are connected through connecting lock catches; the interval between every two adjacent vertical independent support rods is 1.2m;
step six, after the installation and acceptance of the floor slab template are passed, beam slab reinforcement binding and electromechanical reservation pre-embedding construction are carried out;
pouring concrete, wherein the structural concrete construction adopts one-time pouring construction of a horizontal structure and a vertical structure;
step eight, removing the template; the demolding time is determined according to the specific conditions of engineering projects, and the demolding time is generally removed after 24 hours under normal weather conditions;
the template should be started from the wall head, and before the wall template is removed, all the cross braces, the back ribs, the lock catches and the like are guaranteed to be removed;
step nine, dismantling the floor slab template and the early dismantling beam, and carrying out early dismantling of the floor slab template after the floor slab concrete strength reaches 50% of the concrete design strength; the beam bottom die can be removed when the concrete strength reaches 75% of the design strength; the vertical independent support rods are kept motionless, the early-dismantling support sliding pin plates are knocked one by one, the floor slab templates and the early-dismantling beams fall by about 200mm, and then the floor slab templates and the early-dismantling beams are taken down one by one;
and step ten, dismantling the vertical independent support rods and the early dismantling support heads, and dismantling the vertical independent support rods after the concrete strength reaches the form dismantling strength allowed by the corresponding span specification according to the span of the beam plate.
Further, the first back edge and the second back edge are both horizontal steel pipes.
The beneficial effects of the invention are as follows:
the early-dismantling formwork system and the construction method thereof provided by the invention have the advantages that the structure is simple, the design is reasonable, and the mutual influence among all components is avoided on the premise of ensuring effective fastening.
2, connecting the steel frame wood-plastic template with the common wood template by adopting an adjustable lock catch. When the structure is changed, the wood template can be locally adopted, and a steel frame wood-plastic template is not required to be configured. The special locks are used, so that the construction is more convenient, the use is firm, and the construction efficiency is high.
The early-dismantling formwork system and the construction method thereof provided by the invention fully utilize the characteristics of the steel frame and the wood-plastic formwork, have good forming effect, are not easy to deform, are reliable, meet the requirements of high-strength grade concrete and winter construction, and are more important: the turnover and reuse can be realized, the connection of the template system is reliable, the concrete structure is formed at one time, and the early disassembly technology is integrated, so that the early disassembly of the template is realized. The rigidity of the steel frame wood plastic mould plate surface is high, the concrete flatness is good, the air bubbles are few, and the effect of bare concrete can be achieved.
4, compared with an aluminum alloy early-dismantling template system, the steel frame wood plastic template system has obvious advantages in terms of cost, concrete forming effect, template universality and the like, the turnover number of the steel frame wood plastic template is 30-50, the damaged panel can be replaced, and the steel frame and the template can be recycled.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The main objects and other advantages of the invention may be realized and attained by means of the instrumentalities and particularly pointed out in the specification and claims.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of the front structure of the present invention.
FIG. 2 is a schematic illustration of a male corner form and female corner form connection.
Fig. 3 is an exploded view of the front structure of the early-dismantling beam and the early-dismantling support head.
Fig. 4 is an exploded schematic view of the side structure of the early-dismantling beam and the early-dismantling support head.
FIG. 5 is a schematic view of the state of use of the end beam bottom lock catch.
Fig. 6 is a schematic view of the construction of the end beam bottom lock.
Fig. 7 is a schematic structural view of an adjustable lock catch.
Reference numerals: the building construction method comprises the following steps of 1-early dismantling of beams, 2-early dismantling of supporting heads, 3-vertical independent supporting rods, 4-floor slabs, 5-roof connecting templates, 6-split bolts, 7-first wall column templates, 8-connecting catches, 9-reinforcing hooks, 10-vertical reinforcing steel pipes, 11-outer wall bearing plates, 12-positioning hanging seats, 13-external corner templates, 14-internal corner templates, 15-second wall column templates, 16-wall end beam bottom catches, 17-adjustable catches and 18-lower floor slabs.
Detailed Description
The following examples are given by way of illustration only and are not to be construed as limiting the scope of the invention.
As shown in fig. 1 and 3, the invention provides an early-dismantling formwork system with simple structure and reasonable design, which comprises an inner wallboard system, an outer wallboard system, a corner formwork and a floor support plate system; the floor support plate system comprises a floor plate template 4 and an early dismounting device, wherein the early dismounting device comprises a vertical independent support rod 3, an early dismounting support head 2 and an early dismounting beam 1, which are clamped and arranged at the top of the vertical independent support rod 3, and the top of the early dismounting support head 2 is attached to the lower surface of the early dismounting beam 1; the early-dismantling beams 1 are attached to the lower surface of the floor slab template 4 at intervals in parallel. The beam die matching uniformity can be met, and meanwhile, the die matching problem caused by inconsistent beam heights can be adjusted.
Referring to fig. 4, the early-dismantling support head 2 is used as a support of the early-dismantling support head 1, when the early-dismantling support head 2 is in an installation state, the early-dismantling support head 1 is closely attached to the floor slab formwork 4, and when the early-dismantling support head 2 is in a falling state, the mould dismantling operation can be completed on the premise of keeping the early-dismantling support head 2 and the independent support rods 3.
The inner wallboard system comprises two first wall column templates 7, a first back ridge, a top plate connecting template 5, a connecting lock catch 8 and a split bolt 6, wherein the first back ridge and the top plate connecting template 5 are arranged on the outer side face of the first wall column templates 7, the lower end of each first wall column template 7 is arranged on a lower floor 18, and the upper end of each first wall column template 7 is connected with the lower end of the corresponding top plate connecting template 5 through the corresponding connecting lock catch 8. The upper end of the top plate connecting template 5 is propped against the lower surface of the floor template 4; the first wall column templates 7 on the two sides of the inner wall are connected through split bolts 6.
The external wall board system comprises a first wall column template 7 arranged indoors, a first back edge arranged on the outer side surface of the first wall column template 7, a second wall column template 15 arranged outdoors, a second back edge arranged on the outer side surface of the second wall column template 15, a split bolt 6, a vertical reinforcing steel pipe 10, an outer wall bearing plate 11 and a positioning hanging seat 12, wherein the lower end of the first wall column template 7 is arranged on a lower floor 18, the upper end of the first wall column template 7 is connected with the lower end of a top plate connecting template 5 through a connecting lock catch 8, and the upper end of the top plate connecting template 5 is propped against the lower surface of the floor template 4. Further, the first back edge and the second back edge are both horizontal steel pipes. The second back edge is provided with a round hole, and the vertical reinforcing steel pipe 10 is fixedly connected with the second back edge on the outer side surface of the second wall column template 15 through a plurality of reinforcing hooks 9. The reinforcing hook 9 is a self-locking drag hook, and the tail part of the reinforcing hook 9 is in a hook shape.
The positioning hanging seat 12 is arranged on the outer wall of the lower-layer building through an embedded part, an outer wall bearing plate 11 is arranged at the top of the positioning hanging seat 12, the lower end of the second wall column template 15 is arranged on the outer wall bearing plate 11, and the first wall column template 7 and the second wall column template 15 are connected through a split bolt 6; the outer side surface of the second wall column template 15 is also provided with a vertical reinforced steel pipe 10.
As shown in fig. 2, the corner template comprises an external corner template 13 and an internal corner template 14, wherein the external corner template 13 comprises an equilateral L-shaped template and two vertical ribs which are respectively and symmetrically attached to the inner side surface of an opening of the equilateral L-shaped template; the internal corner template 14 comprises a steel template, steel ribs arranged around the steel template and stiffening rib plates. The external corner templates 13 and the internal corner templates 14 with different length combinations can be designed to realize the matched mould with wall thickness variation.
As shown in fig. 6, the wall end beam bottom lock catch 16 comprises a screw, a first stop block, a nut, a second stop block and a butterfly buckle, wherein the first stop block is arranged on one side of the screw and is fixed by the nut arranged on the outer side surface of the first stop block; the second stop block is arranged on the other side of the screw rod and is fixed through a butterfly buckle arranged on the outer side face of the second stop block.
As shown in fig. 7, an adjustable lock catch 17 is also arranged between the top plate connecting template 5 and the wall column template; the adjustable lock catch 17 comprises a screw, hooks and wing nuts, wherein the hooks comprise sleeve sections and lock hooks arranged on the sleeve sections, and the hooks are symmetrically sleeved on two sides of the screw through the sleeve sections. When the novel floor slab formwork is used, the space between two symmetrically arranged hooks is shortened by rotating the butterfly nut, so that the back edge of the floor slab formwork 4 or the wall column formwork is clamped and fixed with the back edge of the common formwork. The steel frame wood plastic template and the common wood template are connected together by adopting an adjustable lock catch 17. When the structure is changed, the wood template can be locally adopted, and a steel frame wood-plastic template is not required to be configured.
As shown in fig. 5, the end-of-wall beam bottom lock 16 may also be used when the outside of the beam bottom form and the end-of-wall form need to be secured in a counter-pulling manner. The special lock catch for each component is used, so that the construction is more convenient, the use is firm, and the construction efficiency is high. On the premise of ensuring effective fastening, the mutual influence among all components is avoided.
The first wall column template 7, the top plate connecting template 5 and the second wall column template 15 comprise wood plastic panels, steel frames arranged at the peripheral edge positions of the wood plastic panels and stiffening ribs welded on the steel frames. The thickness of the wood-plastic panel is 13-20mm; the wood plastic panel is a wood plastic panel template, and the surface of the wood plastic panel template is covered with a hard plastic surface with the thickness of 2mm. The height of the frame is 64mm, and the width is 25mm; the thickness of the steel plate is 2mm. Specifically, the periphery of the wood-plastic panel is embedded into a steel frame, and the panel is tightly fixed with the steel frame and the primary and secondary ribs by countersunk screws; the frame is a steel frame with the width of 25mm and the height of 64mm formed by rolling a steel plate with the thickness of 2mm, semicircular grooves are rolled on the frame at the interval of 600mm, and a wall penetrating screw rod can be installed; the primary and secondary ribs are back ribs formed by rolling a steel plate with the thickness of 2mm. The widths of the first wall column template 7, the top plate connecting template 5 and the second wall column template 15 can be 200mm-600mm, and the heights are not more than 2400mm; the width of the floor slab template 4 is 300-600mm, and the length is not more than 1200mm.
The characteristics of the steel frame and the wood-plastic template are fully utilized in the design, the molding effect is good, the deformation is difficult, the template system is reliable, the requirements of high-strength grade concrete and winter application are met, and more important is: the turnover and reuse can be realized, the connection of the template system is reliable, the concrete structure is formed at one time, and the early disassembly technology is integrated, so that the early disassembly of the template is realized. The rigidity of the steel frame wood plastic mould plate surface is high, the concrete flatness is good, the air bubbles are few, and the effect of bare concrete can be achieved.
The invention also provides a construction method of the early-dismantling formwork system, which comprises the following specific steps:
step one, carrying out template matching deepening design according to a structural design drawing; preparing materials;
step two, processing a first wall column template 7, a second wall column template 15, a top plate connecting template 5 and a floor slab template 4; numbering after finishing the template processing, and transporting to the site;
thirdly, leveling, paying off and positioning corners, binding the wall steel bars, and entering the next procedure after acceptance inspection;
step four, installing a vertical template; placing a wall column template positioning line, performing elevation measurement, and installing a standard wall column template; when the nonstandard layer is constructed, checking verticality and flatness after installing a nonstandard wood template;
s1, constructing an inner wall system, wherein the bottom of a first wall column template 7 is arranged on a lower floor 18, the upper end of the first wall column template 7 is connected with the lower end of a top plate connecting template 5 through a connecting lock catch 8, adjacent wall column templates are connected through the connecting lock catch 8, and the first wall column templates 7 on two sides of a wall are connected through a split bolt 6; synchronously erecting an external angle template 13 and an internal angle template 14;
the outer side of the wall column template is provided with a first back edge which is fixed by a split bolt 6;
s2, constructing an outer wall system, and pre-burying positioning steel bars in advance when constructing the next floor; exposing the embedded positioning steel bars after the pouring of the lower concrete is completed and the outer wall template is removed;
when the outer wall template is installed, the positioning hanging seat 12 is firstly installed and connected with the embedded positioning steel bars through bolts, the top of the positioning hanging seat 12 is provided with the outer wall bearing plate 11, and the positioning hanging seat is fixed with the second wall column template 15 through the outer wall bearing plate 11; the first wall column templates 7 and the second wall column templates 15 on the two sides of the building outer wall are connected through split bolts 6;
the outer side of the wall column template is provided with a second back edge which is fixed by a split bolt 6; the outer side surface of the second wall column template 15 is provided with a vertical reinforced steel pipe 10; synchronously erecting an external angle template 13 and an internal angle template 14;
step five, installing an early-dismantling beam 1, installing a floor slab template 4, and checking the flatness of the floor slab template 4 and the verticality and flatness of the composite wall column;
the floor slab template 4 is hard spliced by taking the early-dismantling beam 1 as a support, and no gap is reserved; the early-dismantling beam 1 takes an early-dismantling supporting head 2 as a support, and when the early-dismantling supporting head 2 is in an installation state, the early-dismantling beam 1 is tightly attached to a floor slab template 4; the templates around the floor are arranged at the upper end of the top plate connecting template 5 and are connected through a connecting lock catch 8; the interval between every two adjacent vertical independent support rods 3 is 1.2m;
step six, after the installation and acceptance of the floor slab template 4 are passed, beam slab reinforcement binding and electromechanical reservation pre-embedding construction are carried out;
pouring concrete, wherein the structural concrete construction adopts one-time pouring construction of a horizontal structure and a vertical structure;
step eight, removing the template; the demolding time is determined according to the specific conditions of engineering projects, and the wall mold is generally removed after 24 hours under normal weather conditions;
the template should be started from the wall head, and before the wall template is removed, all the cross braces, the back ribs, the lock catches and the like are guaranteed to be removed;
step nine, dismantling the floor slab templates 4 and the early dismantling beams 1, and carrying out early dismantling of the floor slab templates 4 after the floor slab concrete strength reaches 50% of the concrete design strength; the beam bottom die can be removed when the concrete strength reaches 75% of the design strength; the vertical independent support rods 3 are kept still, the early-dismantling support sliding pin plates are knocked one by one, the floor slab templates 4 and the early-dismantling beams 1 fall by about 200mm, and then the floor slab templates 4 and the early-dismantling beams 1 are taken down one by one;
and step ten, dismantling the vertical independent support rods 3 and the early dismantling support heads 2, and dismantling the vertical independent support rods 3 after the concrete strength reaches the form dismantling strength allowed by the corresponding span standard according to the span of the beam plate.
The early-dismantling formwork system and the construction method thereof provided by the invention have reasonable structural design and can be used for the concrete construction of constructional engineering structures such as wall column beam plates of high-rise, super high-rise, multi-storey houses and public buildings. Interactions between the individual components can be avoided. The formed concrete has good flatness and less bubbles, and can achieve the effect of bare concrete. Compared with an aluminum alloy early-dismantling formwork system, the steel frame wood-plastic formwork system has obvious advantages in terms of cost, concrete forming effect, formwork universality and the like, the steel frame wood-plastic formwork system has the turnover frequency of 30-50 times, a damaged panel can be replaced, and a steel frame and the formwork can be recycled.
The foregoing is merely illustrative of preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any changes or substitutions that would occur to those skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. The early-dismantling formwork system is characterized by comprising an inner wallboard system, an outer wallboard system, a corner formwork and a floor support plate system;
the floor support plate system comprises a floor plate template (4) and an early dismounting device, wherein the early dismounting device comprises a vertical independent support rod (3), an early dismounting support head (2) and an early dismounting beam (1), the early dismounting support head is clamped and arranged at the top of the vertical independent support rod (3), and the top of the early dismounting support head (2) is attached and arranged on the lower surface of the early dismounting beam (1); the early-dismantling beams (1) are attached to the lower surface of the floor slab template (4) at intervals in parallel;
the inner wallboard system comprises two first wall column templates (7), a first back ridge, a top plate connecting template (5), a connecting lock catch (8) and a split bolt (6), wherein the first back ridge and the top plate connecting template are arranged on the outer side face of the first wall column templates (7), the lower end of the first wall column templates (7) are arranged on a lower floor slab (18), and the upper ends of the first wall column templates (7) are connected with the lower end of the top plate connecting template (5) through the connecting lock catch (8);
the upper end of the top plate connecting template (5) is propped against the lower surface of the floor template (4); the first wall column templates (7) at the two sides of the inner wall are connected through split bolts (6);
the external wall panel system comprises a first wall column template (7) arranged indoors, a first back edge arranged on the outer side surface of the first wall column template (7), a second wall column template (15) arranged outdoors, a second back edge arranged on the outer side surface of the second wall column template (15), a split bolt (6), a vertical reinforcing steel pipe (10), an external wall bearing plate (11) and a positioning hanging seat (12), wherein the lower end of the first wall column template (7) is arranged on a lower floor slab (18), the upper end of the first wall column template (7) is connected with the lower end of a top plate connecting template (5) through a connecting lock catch (8), and the upper end of the top plate connecting template (5) is propped against the lower surface of the floor slab template (4);
the positioning hanging seat (12) is arranged on the outer wall of the lower-layer building through an embedded part, an outer wall bearing plate (11) is arranged at the top of the positioning hanging seat (12), the lower end of the second wall column template (15) is arranged on the outer wall bearing plate (11), and the first wall column template (7) and the second wall column template (15) are connected through a split bolt (6); the outer side surface of the second wall column template (15) is also provided with a vertical reinforced steel pipe (10);
the corner templates comprise an external corner template (13) and an internal corner template (14);
round holes are formed in the second back edges, and the vertical reinforcing steel pipes (10) are fixedly connected with the second back edges on the outer side surfaces of the second wall column templates (15) through a plurality of reinforcing hooks (9).
2. The early-dismantling formwork system as claimed in claim 1, wherein the reinforcing hooks (9) are self-locking hooks, and the tail parts of the reinforcing hooks (9) are hooked.
3. The early-dismantling formwork system of claim 1, wherein the inner wall panel system further comprises a wall end beam bottom lock (16); the wall end beam bottom lock catch (16) comprises a screw, a first stop block, a nut, a second stop block and a butterfly buckle, wherein the first stop block is arranged on one side of the screw and is fixed through the nut arranged on the outer side face of the first stop block; the second stop block is arranged on the other side of the screw rod and is fixed through a butterfly buckle arranged on the outer side face of the second stop block.
4. The early-dismantling formwork system as claimed in claim 1, wherein an adjustable lock catch (17) is further arranged between the top plate connecting formwork (5) and the wall column formwork; the adjustable lock catch (17) comprises a screw, a hook and a butterfly nut, wherein the hook comprises a sleeve section and a lock hook arranged on the sleeve section; the number of the hooks is two, and the hooks are symmetrically sleeved on the two sides of the screw rod through the sleeve sections.
5. An early-dismantling formwork system as claimed in claim 1, wherein the first wall stud formwork (7) comprises a wood-plastic panel, a steel frame provided at the peripheral edge of the wood-plastic panel, and stiffening ribs welded to the steel frame.
6. The early-dismantling formwork system as claimed in claim 5, wherein the wood plastic panel has a thickness of 13-20mm; the wood plastic panel is a wood plastic panel template, and the surface of the wood plastic panel template is covered with a hard plastic surface with the thickness of 2mm.
7. The early disconnect formwork system as claimed in claim 5 wherein the frame is 64mm high and 25mm wide.
8. The construction method of the early-dismantling formwork system as claimed in any one of claims 1 to 7, wherein the specific steps are as follows:
step one, carrying out template matching deepening design according to a structural design drawing; preparing materials;
step two, processing a first wall column template (7), a second wall column template (15), a top plate connecting template (5) and a floor slab template (4); numbering after finishing processing, and transporting to the site;
thirdly, leveling, paying off and positioning corners, binding the wall steel bars, and entering the next procedure after acceptance inspection;
step four, installing a vertical template; placing a wall column template positioning line, performing elevation measurement, and installing a standard wall column template; when the nonstandard layer is constructed, checking verticality and flatness after installing a nonstandard wood template;
s1, constructing an inner wall system, wherein the bottom of a first wall column template (7) is arranged on a lower floor slab (18), the upper end of the first wall column template (7) is connected with the lower end of a top plate connecting template (5) through a connecting lock catch (8), adjacent wall column templates are connected through the connecting lock catch (8), and the first wall column templates (7) on two sides of the wall are connected through opposite-pull bolts (6); synchronously erecting an external angle template (13) and an internal angle template (14);
the outer side of the first wall column template (7) is provided with a first back edge which is fixed through a split bolt (6);
s2, constructing an outer wall system, and pre-burying positioning steel bars in advance when constructing the next floor; exposing the embedded positioning steel bars after the pouring of the lower concrete is completed and the outer wall template is removed;
when the outer wall template is installed, the positioning hanging seat (12) is firstly installed and connected with the embedded positioning steel bars through bolts, the outer wall bearing plate (11) is arranged at the top of the positioning hanging seat (12), and the positioning hanging seat is fixed with the second wall column template (15) through the outer wall bearing plate (11); the first wall column templates (7) and the second wall column templates (15) on the two sides of the building outer wall are connected through split bolts (6);
the second back edge is arranged and fixed through a split bolt (6); the outer side surface of the second wall column template (15) is provided with a vertical reinforced steel pipe (10); synchronously erecting an external angle template (13) and an internal angle template (14);
step five, installing an early-dismantling beam (1), installing a floor slab template (4), and checking the flatness of the floor slab template (4) and the verticality and flatness of the composite wall column;
the floor slab template (4) is subjected to hard splicing by taking the early-dismantling beam (1) as a support, and no gap is reserved; the early-dismantling beam (1) takes an early-dismantling supporting head (2) as a support, and when the early-dismantling supporting head (2) is in an installation state, the early-dismantling beam (1) is tightly attached to the floor slab template (4); the templates around the floor are arranged at the upper end of the top plate connecting template (5) and are connected through a connecting lock catch (8); the interval between every two adjacent vertical independent support rods (3) is 1.2m;
step six, after the installation and acceptance of the floor slab template (4) are passed, binding beam slab reinforcing steel bars and electromechanically reserving and embedding construction is carried out;
pouring concrete, wherein the structural concrete construction adopts one-time pouring construction of a horizontal structure and a vertical structure;
step eight, removing the template; the demolding time is determined according to the specific conditions of engineering projects, and the demolding time is generally removed after 24 hours under normal weather conditions;
step nine, dismantling the floor slab template (4) and the early dismantling beam (1), and after the floor slab concrete strength reaches 50% of the concrete design strength, carrying out early dismantling of the floor slab template (4); the beam bottom die can be removed when the concrete strength reaches 75% of the design strength; the vertical independent support rods (3) are kept motionless, the early-dismantling support sliding pin plates are knocked one by one, the floor slab templates (4) and the early-dismantling beams (1) fall by about 200mm, and then the floor slab templates (4) and the early-dismantling beams (1) are removed one by one;
and step ten, dismantling the vertical independent support rods (3) and the early dismantling support heads (2), and dismantling the vertical independent support rods (3) after the concrete strength reaches the formwork dismantling strength allowed by the corresponding span standard according to the span of the beam plates.
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| CN112482585B (en) * | 2020-12-14 | 2021-09-10 | 哈尔滨哈飞建筑安装工程有限责任公司 | Steel structure support frame for prefabricated house |
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| CN113107196B (en) * | 2021-04-16 | 2024-06-21 | 广州市快易模板工程有限公司 | Beam, wall and plate surface combined quick-mounting and quick-dismounting structure |
| CN114319900A (en) * | 2022-01-11 | 2022-04-12 | 四川中旺易模科技有限公司 | Quick-release clear water formwork system and construction method |
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