CN107780655B - Climbing type flue formwork system and construction method thereof - Google Patents
Climbing type flue formwork system and construction method thereof Download PDFInfo
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- CN107780655B CN107780655B CN201711180765.8A CN201711180765A CN107780655B CN 107780655 B CN107780655 B CN 107780655B CN 201711180765 A CN201711180765 A CN 201711180765A CN 107780655 B CN107780655 B CN 107780655B
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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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
Abstract
A climbing-type flue formwork system and a construction method thereof are provided, wherein the climbing-type flue formwork system comprises a vertical lifting device, an inner formwork structure, a fixing device and an outer formwork structure; the vertical lifting device is fixed on a floor above the flue to be cast; the bottom end of the inner formwork supporting device is supported on a floor slab of a construction floor, and the top end of the inner formwork supporting device penetrates through a reserved flue well on the floor slab at the top of the construction floor and extends into a floor layer above the construction floor; the inner formwork device comprises a vertical support, a linkage assembly and a sleeve; the linkage assembly comprises a first linkage assembly and a second linkage assembly, the first linkage assembly is rotated to drive the vertical support to rotate around the vertical shaft, and then the second linkage assembly is driven to rotate around the horizontal shaft; the inner side surface of the inner template structure is adjustably connected with the second linkage assembly through a threaded rod. The invention solves the technical problems of more finished product quality problems, complex construction process, difficult quality guarantee, large material consumption and higher economic cost of the traditional prefabricated flue.
Description
Technical Field
The invention relates to a climbing type flue formwork system and a construction method thereof.
Background
The flue is used for exhausting flue gas generated in kitchen cooking activities or pipeline products of foul air in toilets. Also called exhaust duct, ventilation duct, house exhaust duct; the residential flue is a main component of a common exhaust pipeline system for residential kitchens and toilets.
At present, a ventilation flue popularized and used in the building industry adopts inorganic fireproof flue plates, and is a combined variable-pressure fireproof exhaust flue produced by mechanical combination and assembly and a traditional cement prefabricated flue which is used in a large amount. However, the fishes and the dragons in the flue market manufacturers in the building industry are mixed and have different quality, the collision in the flue transportation and installation process and the flue in the construction site mostly exist: distortion, rib leakage, cracks, pitted surfaces, holes, uneven surfaces, uneven corner fillets, end surface burrs, too thin or too thick wall thickness, large verticality deviation and the like; in addition, the flue installation needs to have enough to meet need many times to be installed from the processing factory to the scene and is difficult to guarantee that prefabricated flue quality is not impaired, and the flue that size specification is big meets secondary and builds when the room is narrow by laying bricks or stones, installation operation construction difficulty, must many people cooperate and speed is slow, and the flue will not install smoothly when major structure reservation flue well size has great deviation.
Disclosure of Invention
The invention provides a climbing type flue formwork system and a construction method thereof, and aims to solve the technical problems that the quality of a traditional prefabricated flue finished product is high, the quality is difficult to guarantee due to the complex construction process, the material consumption is high, and the economic cost is high.
In order to solve the technical problems, the invention adopts the following technical scheme.
A climbing-type flue formwork system is arranged on a floor slab of a main body structure and close to a position of a reentrant corner; the device comprises a vertical lifting device, an inner supporting die device, an inner template structure, a fixing device and an outer template structure;
the vertical lifting device is fixed at the bottom of the floor above the flue to be cast and is used for lifting the internal formwork supporting device;
the bottom end of the inner formwork supporting device is supported on a floor slab of a construction floor, and the top end of the inner formwork supporting device penetrates through a reserved flue well on the floor slab at the top of the construction floor and extends into a floor on the upper floor of the construction floor; the inner formwork supporting device comprises a vertical support, a linkage assembly connected with the vertical support and a sleeve sleeved on the outer side of the vertical support; the linkage assembly comprises a first linkage assembly and a second linkage assembly, the first linkage assembly is rotated to drive the vertical support to rotate around a vertical axis, and then the second linkage assembly is driven to rotate around a horizontal axis;
the bottom end of the inner formwork structure is supported on a floor slab of a construction floor, and the top of the inner formwork structure is flush with the bottom surface of the floor slab at the top of the construction floor; the inner side surface of the inner template structure is horizontally and adjustably connected with the second linkage assembly through a threaded rod; the second linkage assembly rotates around the horizontal axis to drive the inner template structure to move horizontally inwards or outwards;
the fixing device is arranged in the upper floor of the construction floor and is connected between the inner formwork device and the wall body of the main body structure;
the outer template structure is arranged on the outer side of the inner template structure and forms a closed cylindrical structure with the wall bodies on two sides of the internal corner, and the distance between the outer template structure and the inner template structure is 10-20 mm.
Preferably, the vertical lifting device is an electric hoist or a chain block connected to a floor above the flue to be cast.
Preferably, the vertical support is connected with the sleeve through a bearing arranged at the upper end of the vertical support.
Preferably, the first linkage assembly comprises a worm wheel and a worm; the turbine hitching is connected on the vertical support and between the vertical support and the turbine hitching; the worm is horizontally arranged in the sleeve in a penetrating manner and is connected with the turbine; holes are formed in the positions, corresponding to the positions where the worms penetrate, of the sleeves.
Preferably, the second linkage assembly comprises a horizontal conical gear, a vertical conical gear and a sleeve; the horizontal conical gear is sleeved on the vertical support, and the horizontal conical gear is fixedly connected with the vertical support; the vertical conical gear is fixed at the end part of one end of the sleeve and is connected with the vertical conical gear; the sleeve is horizontally arranged in the sleeve in a penetrating mode, and an internal thread is arranged on the inner wall of the sleeve; the end part of the other end of the sleeve penetrates through the side wall of the sleeve, extends out of the sleeve and is connected with the inner template structure through a threaded rod; the threaded rod is connected to the inner side face of the inner template structure and corresponds to the position of the sleeve, and the threaded rod is in threaded connection with the corresponding sleeve.
Preferably, the external template structure comprises two steel template units which are arranged vertically, and the external template structure and the wall bodies on the two sides of the internal corner form a closed cylindrical structure in a surrounding manner; and an inclined strut is arranged between the outer side of the outer template structure and the floor slab.
Preferably, the fixing device comprises two vertical angle steels arranged in parallel at intervals, a horizontal angle steel connected between the two vertical angle steels and a horizontal pipe hoop connected to the horizontal angle steel; the vertical angle steel is detachably connected to a wall body of the main body structure; the horizontal pipe hoop is positioned at the position where the internal formwork device passes through and hoops the internal formwork device.
Preferably, the inner template structure comprises a corner plate and standard plates connected to two sides of the corner plate; and horizontal threaded rods are connected to the inner side surfaces of the two standard plates and the positions corresponding to the sleeves.
A construction method of a climbing-type flue formwork system comprises the following steps.
Step one, constructing a vertical lifting device; and according to the number of floors and the type selection, a vertical lifting device is arranged on the floor above the flue to be cast, and the vertical lifting device lifts the subsequent inner formwork structure through the reserved flue well.
Step two, constructing a fixing device; hoisting the fixing device to the upper floor of the construction floor, and measuring and positioning along the height of the flue; the fixing device is temporarily fixed by adjusting the verticality of the fixing device and reserving the position of the inner template structure.
Constructing the inner formwork supporting device and the inner formwork structure; the inner formwork supporting device penetrates through a horizontal pipe hoop of the fixing device, the worm is rotated to adjust the relative elongation between the threaded rod and the corresponding sleeve to unfold the inner formwork structure, the position of the inner formwork structure is adjusted, the deviation between the flue size and an actual flue well is calibrated, and the two side edges of the inner formwork structure are connected with the wall contact surfaces on the two sides of the internal corner by adopting an adhesive to prevent slurry leakage in the concrete pouring process; the fixture is then finally fixed.
Step four, constructing an external formwork structure; after the concealed inspection acceptance is qualified, an outer template structure is arranged on the outer side of the inner template structure, a gap between the outer template structure and the inner template structure is determined according to the wall thickness of a flue, and then two side edges of the outer template structure are connected with wall contact surfaces on two sides of an internal corner.
Fifthly, pouring flue concrete; the flue concrete adopts self-compaction concrete, and self-compaction concrete placement adopts slip casting machine connecting pipe, takes out the pipe along with pouring height improvement from the template root.
Step six, construction of the inclined strut; and (3) arranging an inclined strut between the outer template structure and the floor slab, checking the verticality and the internal and external angle squareness of the outer template structure, and determining that the quality of the formed tobacco meets the standard requirement.
Dismantling the inner template structure and the outer template structure; after the self-compacting concrete is poured for 12 hours, the outer formwork structure is removed; then, the relative shrinkage between the threaded rod and the corresponding sleeve is adjusted by reversely rotating the worm, the shrinkage of the threaded rod drives the inner template structure to move inwards, so that the inner template structure is separated from the flue concrete, and the inner template structure is lifted and transported to the next section of flue position to be poured by utilizing the vertical lifting device.
And step eight, repeating the step two to the step seven until the construction of the flue to be poured is finished.
Preferably, in the fifth step, when the flue concrete is poured, holes are formed in the outer formwork structure at intervals of 700-900 mm along the vertical direction, and the corresponding holes are sequentially plugged after concrete grout is leaked out.
Compared with the prior art, the invention has the following characteristics and beneficial effects.
1. The internal formwork supporting device in the climbing type flue formwork supporting system is detachably connected with a wall body through the fixing device, so that the whole formwork supporting system has multiple turnover times, the whole hoisting and dismantling construction is convenient and simple to operate, the distance between the outer formwork structure and the inner formwork structure can be adjusted through adjusting the displacement of the threaded rod in the sleeve, and flues with various sizes can be manufactured, so that the flue on-site pouring quality effect is good, the comprehensive cost budget is low, and the application range is wide.
2. The climbing-type flue formwork system can adjust the flue pouring installation by adjusting the internal formwork device according to the size of the flue well reserved on site, can improve the surface impression quality of a ventilation flue member, effectively controls construction errors, has good applicability and reduces one-time investment cost.
3. The construction of the climbing-type flue formwork system can reduce the surface plastering treatment on the subsequent construction, and only the surface after the formwork removal is simply napped, so that construction conditions are provided for later decoration; two trained ordinary workers can meet the whole process from formwork erecting to concrete pouring construction of the whole flue; the construction operation is simple and convenient, and the overall installation progress is improved; the one-time investment is low, the practicability is strong, the recovery residual value is high, and the overall economic benefit is good.
4. The construction of the climbing-type flue formwork system can solve the problems of quality damage during the transportation of finished flue products, manual consumption during secondary transportation and small area of a field material stacking area, and the quality problems of uneven surface, uneven corner fillets, flash of end surfaces, over-thin or over-thick wall thickness, large verticality deviation and the like of the prefabricated finished products.
5. Compared with the traditional flue installation process and method, the climbing type flue formwork system and the construction method thereof have the following advantages:
according to the above table, by adopting the climbing-type flue formwork supporting system, the construction process is reduced, the rough mounting and repairing construction period is shortened, the plastering engineering amount is reduced, and the cost is saved.
6. The climbing type flue formwork system can meet the requirement of 10-20 mm of the wall thickness of a through flue by concrete cast-in-place construction, the thickness of the flue is controlled, meanwhile, the built-in steel wire mesh sheet further enhances the overall strength, and the overall strength requirement is met through experiments.
Drawings
Fig. 1 is a schematic front structural view of a climbing-up flue formwork system according to the present invention.
Fig. 2 is a schematic top view of the climbing flue formwork system of the present invention.
Fig. 3 is a schematic front structural view of the connection of the internal formwork device and the internal formwork structure.
Fig. 4 is a schematic top view of the connection between the inner supporting device and the inner formwork structure.
Fig. 5 is a schematic diagram of the connection structure of the inner formwork device, the inner formwork structure and the outer formwork structure.
Figure 6 is a schematic view of an inner formwork structure.
Fig. 7 is a schematic view of the structure of the fixing device.
Fig. 8 is a schematic view of the structure of the fixing device connected with the wall.
Fig. 9 is a schematic view of a horizontal pipe clamp of the present invention.
Reference numerals: the device comprises a 1-floor slab, a 2-vertical lifting device, a 3-fixing device, a 3.1-vertical angle steel, a 3.2-horizontal angle steel, a 3.3-horizontal pipe hoop, a 4-inner supporting die device, a 4.1-vertical support, a 4.2-sleeve, a 4.3-turbine, a 4.4-worm, a 4.5-horizontal bevel gear, a 4.6-vertical bevel gear, a 4.7-sleeve, a 5-outer template structure, a 6-inner template structure, a 6.1-corner plate, a 6.2-standard plate, a 7-wall body, an 8-bearing, a 9-threaded rod and a 10-inclined support.
Concrete construction mode
The climbing formwork system converts the traditional prefabricated finished flue installation construction into the construction site direct pouring construction, thereby controlling the construction quality and solving the cost benefit; in order to meet the requirements of flue construction quality and engineering cost reduction, the invention creates a climbing type ventilation flue formwork system for the on-site manufacturing construction process of the ventilation flue according to the characteristics of the current construction level, construction method, construction experience and combined engineering example.
As shown in fig. 1-9, the climbing-up type flue formwork system is arranged on a floor slab 1 of a main structure and at a position close to an internal corner; the climbing-up type flue formwork system comprises a vertical lifting device 2, an inner formwork device 4, an inner formwork structure 6, a fixing device 3 and an outer formwork structure 5;
the vertical lifting device 2 is fixed at the bottom of the floor slab 1 above the flue to be poured and is used for lifting the inner formwork device 4;
the bottom end of the inner formwork supporting device 4 is supported on a floor slab 1 of a construction floor, and the top end of the inner formwork supporting device 4 penetrates through a reserved flue well on the floor slab 1 at the top of the construction floor and extends into a floor on the upper floor of the construction floor; the inner formwork device 4 comprises a vertical support 4.1, a linkage assembly connected with the vertical support 4.1 and a sleeve 4.2 sleeved outside the vertical support 4.1; the linkage assembly comprises a first linkage assembly and a second linkage assembly, and the first linkage assembly is rotated to drive the vertical support 4.1 to rotate around a vertical axis and then drive the second linkage assembly to rotate around a horizontal axis;
the bottom end of the inner template structure 6 is supported on the floor slab 1 of the construction floor, and the top of the inner template structure 6 is flush with the bottom surface of the floor slab 1 at the top of the construction floor; the inner side surface of the inner template structure 6 is horizontally and adjustably connected with the second linkage assembly through a threaded rod 9; the second linkage assembly rotates around a horizontal axis to drive the inner template structure 6 to move horizontally inwards or outwards;
the fixing device 3 is arranged in the upper floor of the construction floor and is connected between the inner formwork device 4 and the wall 7 of the main structure; the outer formwork structure 5 is arranged on the outer side of the inner formwork structure 6 and forms a closed cylindrical structure with the wall bodies 7 on two sides of the internal corner, and the distance between the outer formwork structure 5 and the inner formwork structure 6 is 10-20 mm.
In this embodiment, a steel mesh is arranged between the outer formwork structure 5 and the inner formwork structure 6, and the steel mesh is then cast in the flue concrete.
In this embodiment, the vertical lifting device 2 is an electric hoist or a chain block connected to the floor slab 1 above the flue to be cast.
In this embodiment, the vertical support 4.1 is connected to the sleeve 4.2 through a bearing 8 disposed at an upper end of the vertical support 4.1.
In the embodiment, the first linkage assembly comprises a turbine 4.3 and a worm 4.4; the turbine 4.3 is sleeved on the vertical support 4.1 and connected with the vertical support 4.1; the worm 4.4 horizontally penetrates through the sleeve 4.2 and is connected with the turbine 4.3; holes are formed in the sleeve 4.2 at positions corresponding to the positions through which the worm 4.4 penetrates.
In the embodiment, the second linkage assembly comprises a horizontal conical gear 4.5, a vertical conical gear 4.6 and a sleeve 4.7; the horizontal conical gear 4.5 is sleeved on the vertical support 4.1, and the horizontal conical gear 4.5 is fixedly connected with the vertical support 4.1; the vertical conical gear 4.6 is fixed at the end part of one end of the sleeve 4.7 and is connected with the vertical conical gear 4.6; the sleeve 4.7 horizontally penetrates through the sleeve 4.2, and an internal thread is arranged on the inner wall of the sleeve 4.7; the end part of the other end of the sleeve 4.7 penetrates through the side wall of the sleeve 4.2, extends out of the sleeve 4.2 and is connected with the inner template structure 6 through a threaded rod 9; the threaded rod 9 is connected to the inner side face of the inner template structure 6 and corresponds to the position of the sleeve 4.7, and the threaded rod 9 is in threaded connection with the corresponding sleeve 4.7.
In this embodiment, the external template structure 5 includes two steel template units arranged perpendicular to each other, and the external template structure 5 and the wall bodies 7 on both sides of the internal corner form a closed cylindrical structure; and a release agent is coated on the surface of the outer formwork structure 5, and an inclined strut 10 is arranged between the outer side of the outer formwork structure 5 and the floor slab 1.
In this embodiment, the fixing device 3 includes two vertical angle steels 3.1 arranged in parallel at intervals, a horizontal angle steel 3.2 connected between the two vertical angle steels 3.1, and a horizontal pipe hoop 3.3 connected to the horizontal angle steel 3.2; the vertical angle steel 3.1 is detachably connected to a wall 7 of the main body structure; the horizontal pipe hoop 3.3 is located at the position where the internal formwork means 4 passes and hoops the internal formwork means 4 therein.
In this embodiment, the inner formwork structure 6 comprises a corner plate 6.1 and standard plates 6.2 connected to two sides of the corner plate 6.1; horizontal threaded rods 9 are connected to the inner side surfaces of the two standard plates 6.2 at positions corresponding to the sleeves 4.7.
The construction method of the climbing-type flue formwork system comprises the following steps.
Step one, constructing a vertical lifting device 2; according to the number and the type of floors, a vertical lifting device 2 (an electric hoist or a hand hoist) is installed on the floor slab 1 above the flue to be cast, and the vertical lifting device 2 hoists a subsequent inner template structure 6 through a reserved flue well; therefore, the vertical lifting device must be firmly fixed on the floor slab 1, personnel can be careful in the operation process to avoid accidents such as falling from a high place, falling from the high place and the like, the lifted flue cover plate is protected after lifting, and the electric hoist control box is locked to avoid other personnel from touching; the lifting load value of the electric hoist must be higher than the total load of the formwork system, and the quality of the steel wire rope and the steel chain must meet the standard requirements; the vertical lifting device 2 is arranged vertically in the center of the flue shaft, and a formwork supporting system is not contacted with and hung on the floor slab 1 in the lifting process.
Step two, constructing the fixing device 3; treat that vertical lift device 2 installation safety inspection is qualified, with fixing device 3 handling to the last floor of construction floor, use the power actuated setting device to measure positioning control along flue altitude interval 500mm, the steel nail is used as the stiff end of later stage steel wire net piece installation, through adjusting the straightness that hangs down, reserves the position of interior template structure 6, fixes fixing device 3 temporarily with expansion bolts, bolt drilling depth must satisfy and bear whole formwork load requirement.
Constructing the inner formwork supporting device 4 and the inner formwork structure 6; the inner formwork supporting device 4 penetrates through a horizontal pipe hoop 3.3 of the fixing device 3, the worm 4.4 is rotated to adjust the relative elongation between the threaded rod 9 and the corresponding sleeve 4.7, the inner formwork structure 6 is unfolded, the position of the inner formwork structure 6 is adjusted, the deviation of the flue size and the actual flue well is calibrated, the two side edges of the inner formwork structure 6 are connected with the contact surfaces of the wall bodies 7 on the two sides of the internal corner by adopting an adhesive, and the slurry leakage in the concrete pouring process is prevented; after the release agent is applied to the surface of the inner formwork structure 6, the fixing device 3 is finally fixed.
And step four, adopting phi 6 steel bars @700 to be bound and fixed with the structural injection nails, binding the steel wire mesh with the phi 6 steel bars, controlling the thickness of a steel wire mesh protective layer in the thick self-compacting concrete flue to be poured, avoiding the problem of leakage of the steel wire mesh after the form removal and causing the problem of smoke leakage of the later-stage steel wire mesh rusty flue.
Constructing an outer template structure 5; after the concealment acceptance is qualified, the outer formwork structure 5 is arranged on the outer side of the inner formwork structure 6, a gap between the outer formwork structure 5 and the inner formwork structure 6 is determined according to the wall thickness of the flue, and then two side edges of the outer formwork structure 5 are connected with contact surfaces of wall bodies 7 on two sides of the internal corner.
Sixthly, pouring flue concrete; the flue concrete adopts self-compaction concrete, and self-compaction concrete placement adopts slip casting machine connecting pipe, takes out the pipe along with pouring the high improvement from the template root, and flue internal corner department accords with flue standard design standard after self-compaction concrete placement.
Step seven, constructing the inclined strut 10; and (3) arranging an inclined strut 10 between the outer template structure 5 and the floor slab 1, checking the verticality and the internal and external angle squareness of the outer template structure 5, and determining that the quality of the formed tobacco meets the standard requirement.
Step eight, after the concealment acceptance is qualified, constructing the outer template structure 5 and the inclined strut 10, coating a release agent on the surface of the outer template structure 5, and sticking a double faced adhesive tape on the contact surface of the template and the wall 7 to prevent slurry leakage; after the inclined strut 10 is installed, the verticality and the internal and external corner squareness of the external template structure 5 are checked, and the quality of the formed flue is determined to meet the standard requirement of the industry standard.
Step nine, dismantling the inner template structure 6 and the outer template structure 5; after the self-compacting concrete is poured for 12 hours, the outer formwork structure 5 is removed; then, the relative shrinkage between the threaded rod 9 and the corresponding sleeve 4.7 is adjusted by reversely rotating the worm 4.4, the shrinkage of the threaded rod 9 drives the inner template structure 6 to move inwards, so that the inner template structure 6 is separated from the flue concrete, and meanwhile, the type of the vertical conical gear 4.6 is controlled to be smaller than that of the horizontal conical gear 4.5 (the horizontal conical gear 4.5 rotates at the same speed for one circle, the vertical conical gear 4.6 is smaller, the rotating speed is higher, and the effect of firstly retracting the angle template and then retracting the template is achieved); and then the inner formwork structure 6 is lifted and transported to the position of the next section of flue to be poured by utilizing the vertical lifting device 2.
And step ten, repeating the step two to the step seven until the construction of the flue to be poured is finished.
In this embodiment, in the fifth step, when the flue concrete is poured, holes are opened on the outer formwork structure 5 along the vertical direction every 700 mm-900 mm, and the corresponding holes are sequentially plugged after concrete grout is leaked out.
In the embodiment, the fixing device 3 is lifted to the upper floor of the construction floor by the vertical lifting device 2 for fixing, and is in charge of bearing the self load of the inner supporting template device 4 and the horizontal construction load during formwork supporting in an expansion bolt fixing mode; the inner supporting template device 4 is connected to the fixing device 3, and the supporting and the dismantling of the inner template structure are controlled through a first linkage assembly, a second linkage assembly and a threaded rod 9; the inner template structure 6 consists of a standard plate and a corner plate, and a steel wire mesh is hung between the outer template structure 5 and the inner template structure 6.
In this example, vertical lift device 2 can adopt manual lifting hoist or electronic lifting hoist, and what kind of mode of adoption promotes according to floor quantity decision, can be on every construction level the fixed manual electric hoist that adopts of third floor, also can be in every several layers of high sum and be not more than 10 meters department setting up electric hoist and promote.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but encompasses equivalent technical means as would be appreciated by those skilled in the art based on the inventive concept.
Claims (8)
1. A climbing-type flue formwork system is arranged on a floor (1) of a main structure and close to a position of a reentrant corner; the method is characterized in that: comprises a vertical lifting device (2), an inner formwork support device (4), an inner formwork structure (6), a fixing device (3) and an outer formwork structure (5); the vertical lifting device (2) is fixed at the bottom of the floor slab (1) above the flue to be cast and used for lifting the internal formwork device (4); the bottom end of the inner formwork supporting device (4) is supported on a floor slab (1) of a construction floor, and the top end of the inner formwork supporting device (4) penetrates through a reserved flue well on the floor slab (1) at the top of the construction floor and extends into a floor of the upper floor of the construction floor; the inner formwork supporting device (4) comprises a vertical support (4.1), a linkage assembly connected with the vertical support (4.1) and a sleeve (4.2) sleeved on the outer side of the vertical support (4.1); the linkage assembly comprises a first linkage assembly and a second linkage assembly, the first linkage assembly is rotated to drive the vertical support (4.1) to rotate around a vertical axis, and then the second linkage assembly is driven to rotate around a horizontal axis; the bottom end of the inner template structure (6) is supported on the floor (1) of the construction floor, and the top of the inner template structure (6) is flush with the bottom surface of the floor (1) at the top of the construction floor; the inner side surface of the inner template structure (6) is horizontally and adjustably connected with the second linkage assembly through a threaded rod (9); the second linkage assembly rotates around a horizontal axis to drive the inner template structure (6) to move horizontally inwards or outwards; the fixing device (3) is arranged in the upper floor of the construction floor and is connected between the inner formwork device (4) and the wall body (7) of the main structure; the outer formwork structure (5) is arranged on the outer side of the inner formwork structure (6) and forms a closed cylindrical structure with the wall bodies (7) on two sides of the internal corner, and the distance between the outer formwork structure (5) and the inner formwork structure (6) is 10 mm-20 mm; arranging a steel mesh between the outer formwork structure (5) and the inner formwork structure (6), and then pouring the steel mesh in flue concrete; the vertical lifting device (2) is an electric hoist or a chain block connected to the floor (1) above the flue to be poured; the vertical support (4.1) is connected with the sleeve (4.2) through a bearing (8) arranged at the upper end of the vertical support (4.1).
2. The climbing flue formwork system according to claim 1, wherein: the first linkage assembly comprises a turbine (4.3) and a worm (4.4); the turbine (4.3) is sleeved on the vertical support (4.1) and connected with the vertical support (4.1); the worm (4.4) horizontally penetrates through the sleeve (4.2) and is connected with the turbine (4.3); holes are formed in the positions, corresponding to the positions where the worms (4.4) penetrate, of the sleeves (4.2).
3. The climbing flue formwork system according to claim 2, wherein: the second linkage assembly comprises a horizontal conical gear (4.5), a vertical conical gear (4.6) and a sleeve (4.7); the horizontal conical gear (4.5) is sleeved on the vertical support (4.1), and the horizontal conical gear (4.5) is fixedly connected with the vertical support (4.1); the vertical conical gear (4.6) is fixed at the end part of one end of the sleeve (4.7) and is connected with the vertical conical gear (4.6); the sleeve (4.7) horizontally penetrates through the sleeve (4.2), and an internal thread is arranged on the inner wall of the sleeve (4.7); the end part of the other end of the sleeve (4.7) penetrates through the side wall of the sleeve (4.2), extends out of the sleeve (4.2), and is connected with the inner template structure (6) through a threaded rod (9); the threaded rod (9) is connected to the inner side face of the inner die plate structure (6) and corresponds to the position of the sleeve (4.7), and the threaded rod (9) is in threaded connection with the corresponding sleeve (4.7).
4. The climbing flue formwork system according to claim 3, wherein: the outer template structure (5) comprises two steel template units which are perpendicular to each other, and the outer template structure (5) and the wall bodies (7) on the two sides of the internal corner form a closed cylindrical structure in an enclosing mode; an inclined strut (10) is arranged between the outer side of the outer template structure (5) and the floor slab (1).
5. The climbing flue formwork system according to claim 4, wherein: the fixing device (3) comprises two vertical angle steels (3.1) which are arranged in parallel at intervals, horizontal angle steels (3.2) connected between the two vertical angle steels (3.1) and horizontal pipe hoops (3.3) connected to the horizontal angle steels (3.2); the vertical angle steel (3.1) is detachably connected to a wall body (7) of the main body structure; the horizontal pipe hoop (3.3) is positioned at the position where the internal support device (4) passes through and the internal support device (4) is hooped in the horizontal pipe hoop.
6. The climbing flue formwork system according to claim 5, wherein: the inner template structure (6) comprises a corner plate (6.1) and standard plates (6.2) connected to two sides of the corner plate (6.1); the inner side surfaces of the two standard plates (6.2) are connected with horizontal threaded rods (9) at positions corresponding to the sleeves (4.7).
7. A construction method of the climbing flue formwork system as recited in claim 6, comprising the steps of:
step one, constructing a vertical lifting device (2); according to the number and the type of floors, a vertical lifting device (2) is installed on a floor slab (1) above a flue to be cast, and the vertical lifting device (2) is used for hoisting a subsequent inner template structure (6) through a reserved flue well;
step two, constructing the fixing device (3); hoisting the fixing device (3) to the upper floor of the construction floor, and measuring and positioning along the height of the flue; temporarily fixing the fixing device (3) by adjusting the verticality of the fixing device (3) and reserving the position of the inner template structure (6);
constructing the inner supporting formwork device (4) and the inner formwork structure (6); the inner formwork device (4) is penetrated in a horizontal pipe hoop (3.3) of the fixing device (3), the worm (4.4) is rotated to adjust the relative elongation between the threaded rod (9) and the corresponding sleeve (4.7) to unfold the inner formwork structure (6), the position of the inner formwork structure (6) is adjusted, the deviation of the flue size and the actual flue well is calibrated, and the two side edges of the inner formwork structure (6) are connected with the contact surfaces of the wall bodies (7) at the two sides of the internal corner by using adhesive to prevent slurry leakage in the concrete pouring process; then the fixing device (3) is finally fixed;
fourthly, constructing an outer template structure (5); after the concealment acceptance is qualified, arranging an outer template structure (5) on the outer side of the inner template structure (6), determining a gap between the outer template structure (5) and the inner template structure (6) according to the wall thickness of a flue, and then connecting two side edges of the outer template structure (5) with contact surfaces of wall bodies (7) on two sides of an internal corner;
fifthly, pouring flue concrete; the flue concrete adopts self-compacting concrete, the self-compacting concrete is poured and connected with the guide pipe by adopting a grouting machine, and the guide pipe is drawn out from the root of the template along with the increase of the pouring height;
step six, constructing the inclined strut (10); arranging an inclined strut (10) between the outer template structure (5) and the floor slab (1), checking the verticality and the internal and external corner squareness of the outer template structure (5), and determining that the quality of the formed smoke meets the standard requirement of the specification;
seventhly, dismantling the inner template structure (6) and the outer template structure (5); after the self-compacting concrete is poured for 12 hours, the outer formwork structure (5) is dismantled; then, the relative shrinkage between the threaded rod (9) and the corresponding sleeve (4.7) is adjusted by reversely rotating the worm (4.4), the shrinkage of the threaded rod (9) drives the inner template structure (6) to move inwards, so that the inner template structure (6) is separated from the flue concrete, and the inner template structure (6) is lifted and transported to the position of the next section of flue to be poured by using the vertical lifting device (2);
and step eight, repeating the step two to the step seven until the construction of the flue to be poured is finished.
8. The construction method of the climbing type flue formwork system according to claim 7, characterized in that: fifthly, when the flue concrete is poured, holes are formed in the outer template structure (5) every 700mm to 900mm in the vertical direction, and the corresponding holes are sequentially plugged after concrete grout is leaked out.
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| CN111335630A (en) * | 2020-03-24 | 2020-06-26 | 中国五冶集团有限公司 | Cast-in-place flue mould of house |
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| CN205894670U (en) * | 2016-04-22 | 2017-01-18 | 中国建筑第二工程局有限公司 | Concrete connects template structure of stubble construction between floor |
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| CN201635388U (en) * | 2010-05-06 | 2010-11-17 | 中国建筑第二工程局有限公司 | Unilateral supporting formwork system for cast-in-place concrete arc outer wall |
| US9016025B2 (en) * | 2012-06-11 | 2015-04-28 | Zhejiang Construction Engineering Group Co., Ltd | Constructing method for concrete cylinder of construction steel bar of high-rise steel structure |
| CN103669900B (en) * | 2013-12-03 | 2015-11-04 | 东北电业管理局烟塔工程公司 | Integral reinforcement construction method for outer barrel wall of chimney |
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| CN107091007B (en) * | 2017-05-07 | 2021-03-05 | 云南建投第十三建设有限公司 | Construction method for building reinforced concrete chimney with internal and external lifting templates |
| CN207647169U (en) * | 2017-11-23 | 2018-07-24 | 中国建筑第二工程局有限公司 | A kind of climbing type flue formwork system |
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