CN112012479A - Suspended formwork system for lower layer plate of double-layer roof of horizontal warehouse and construction method - Google Patents
Suspended formwork system for lower layer plate of double-layer roof of horizontal warehouse and construction method Download PDFInfo
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- CN112012479A CN112012479A CN202010695513.4A CN202010695513A CN112012479A CN 112012479 A CN112012479 A CN 112012479A CN 202010695513 A CN202010695513 A CN 202010695513A CN 112012479 A CN112012479 A CN 112012479A
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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
- E04G11/36—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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
- E04H7/26—Constructions, with or without perforated walls, depending on the use of specified materials mainly of concrete, e.g. reinforced concrete or other stone-like materials
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a suspended formwork system for a lower layer plate of a double-layer roof of a flat-room warehouse, which comprises a lifting keel, a main keel, a profiled steel sheet, an electric hoist, a suspended formwork keel, a hanging rib and a roof truss beam, wherein the main keel is welded at the upper part of the lifting keel, the profiled steel sheet is welded at the upper part of the main keel, a lifting base is arranged at the upper part of a beam body of the roof truss beam, the suspended formwork keel is fixedly connected onto the lifting base, a suspended formwork keel lug plate is welded onto the suspended formwork keel and used as a suspended formwork lug plate for the electric hoist, the main keel can be hoisted and lifted by controlling the length of a hanging chain which is lowered by the electric hoist, and the main keel and the roof truss beam are fixedly connected by using the hanging rib, a fixed angle steel and a nut. The invention aims at the construction of the cast-in-place double-layer roof structure of the horizontal warehouse, solves the current situations of high cost and low efficiency of the traditional construction of the lower layer plate of the horizontal warehouse, greatly improves the working efficiency and simultaneously improves the forming quality of the lower layer plate of the horizontal warehouse.
Description
Technical Field
The invention relates to the technical field of grain depot horizontal warehouse construction, in particular to a suspended formwork system for a lower layer plate of a double-layer roof of a horizontal warehouse and a construction method.
Background
In recent years, along with the improvement and development of the technical level of grain depot construction, in order to ensure the grain storage effect, the traditional horizontal warehouse is improved and optimized aiming at the current grain storage varieties and environmental conditions, and a brand new horizontal warehouse roof form, namely a full cast-in-place double-layer self-ventilation roof, appears. The full cast-in-place double-layer self-ventilation roof horizontal warehouse has the outstanding characteristics of good air tightness, high construction speed, good waterproof performance and the like, and is increasingly widely applied. The conventional lower deck construction method has the following problems: 1. the lower layer plate adopts a method of building a full-hall bracket, so that the bracket material input is large, and the turnover rate is low; meanwhile, the frame body has high erection standard, smaller construction space and lower work efficiency; 2. the lower plate adopts a method of a truss floor bearing plate, and a steel roof truss is used as a truss floor bearing plate supporting system to construct the lower plate; 3. the lower plate adopts a truss floor bearing plate, and the steel roof truss H-shaped steel wing plate is used as a support system metal of the truss floor bearing plate for construction. Under this kind of construction method, there is more gap to be difficult to handle between truss building carrier plate and the H shaped steel pterygoid lamina, and the gap is great to the air tightness influence in one-storey house storehouse, does not reach the air tightness requirement in one-storey house storehouse far away.
Disclosure of Invention
In order to overcome the technical defects that the lower plate of the double-layer roof of the horizontal warehouse is low in construction efficiency, high in input cost, unqualified in flatness of the lower plate surface and the like easily occur in the construction of the lower plate of the double-layer roof of the horizontal warehouse in the prior art, the invention provides the hanging mould system for the lower plate of the double-layer roof of the horizontal warehouse, the hoisting and lifting of the main keel can be realized by controlling the length of the lower guide chain of the electric hoist during use, a scaffold is not required to be erected, and meanwhile, the flatness of the surface of the lower plate can be controlled, so that the technical problem is solved.
The invention realizes the purpose through the following technical scheme, and the suspended formwork system for the lower layer plate of the double-layer roof of the flat-room warehouse comprises a lifting keel, a main keel, a profiled steel plate, an electric hoist, a suspended formwork keel, a suspension rib and a roof truss beam, wherein the main keel is welded on the upper part of the lifting keel and is vertically connected and fixed, the upper part of the main keel is welded with the profiled steel plate, a template is paved on the upper part of the profiled steel plate, a lifting keel lug plate is also welded on the upper part of the main keel, a lifting base is arranged on the upper part of a beam body of the roof truss beam, the suspended formwork keel is fixedly connected on the lifting base, and the suspended formwork keel lug plate is welded on the suspended formwork keel and is used for.
The mould fossil fragments otic placode is hung on hanging the mould fossil fragments to electric block's upper portion, and the lower part is connected through leading chain and main joist last welded promotion fossil fragments otic placode, and the hoist and mount promotion of main joist can be realized to the length of leading the chain through controlling electric block to transfer.
The lifting rib is bent into a U-shaped structure by a round steel bar, external threads are formed at two ends of the lifting rib, nuts with corresponding sizes are configured, fixed angle steel is welded on the roof truss girder, and after the main keel is lifted in place, the main keel and the roof truss girder are fixedly connected by the lifting rib, the fixed angle steel and the nuts.
The lifting keel and the lifting formwork keel are both made of rectangular steel pipes, and the cross-sectional dimension of the lifting keel and the lifting formwork keel is 400mm multiplied by 200mm multiplied by 5 mm.
The main keel is a rectangular square tube with the cross section size of 400 multiplied by 200 multiplied by 5mm, the length of a single rectangular tube is 6m, and the rectangular tube joint is formed by connecting two steel plates with the same specification through a high-strength bolt.
The above mould hanging system for the lower layer plate of the double-layer roof of the horizontal warehouse is characterized in that the specification of the profiled steel sheet is YX48-200-600, the span of the profiled steel sheet is 3m, the lap joint length of the two end parts at the main keel is 400mm, and the profiled steel sheet is fixed on the main keel through bolt connection.
The invention also provides a construction method for the lower floor plate hanging die system of the double-deck roof of the horizontal warehouse, which comprises the following construction steps:
s1: the positions of an electric hoist and a lifting keel are released on a steel structure roof truss according to an original design drawing, the lifting keel, a main keel, a profiled steel sheet and a template are installed in place through a crane before the steel structure roof truss is installed, the position of a lifting keel lifting point corresponds to the position of the electric hoist, and meanwhile, a lifting keel lug plate and a lifting die keel lug plate are accurately positioned and welded;
s2: the whole die lifting system is lifted by an electric hoist, and is synchronously lifted through a computer control box, the electric hoist, a hoist chain and the die lifting system need to be stopped periodically in the lifting process of the die lifting system, and the die lifting system is ensured to be always in a horizontal state in the lifting process until the designed elevation is reached;
s3: the hoisting die system is temporarily fixed on the main keel when being assembled on the ground, and when the hoisting die system is lifted to a design position by the electric hoist, the hoisting bar is fixed on a lower layer roof truss beam of the steel roof truss by using a fixed angle steel through a nut;
s4: after the suspended formwork system is installed, the construction load is controlled when the next process is carried out, the construction load is guaranteed to be 2KN/m2, meanwhile, reinforcing steel bars and templates are piled to avoid concentrated stacking, then concrete is poured by a ground pump, a steel pipe is adopted as a vertical pump pipe, a hose is adopted along the axis of the roof truss, and concrete in the storehouse is poured while retreating;
s5: lower floor's board concrete strength reaches 100% back, carries out demolising of template system, and electric block mentions promotion fossil fragments and the laminating of main joist, then hangs the muscle with the car of ascending a height and cuts off, for guaranteeing construction safety, hangs the muscle and cuts off the order and the installation order is opposite, then utilizes electric block to descend hanging die system and template to the bottom plate through lower floor's board reservation hole in step, demolishs hanging die system in proper order and transports out the storehouse in, accomplishes whole work progress.
Generally, compared with the prior art, the technical scheme of the invention can achieve the following beneficial effects:
1. the hoisting die system for the lower layer plate of the double-layer roof of the horizontal warehouse changes the current situations of high traditional construction cost and low efficiency of the lower layer plate of the horizontal warehouse, greatly improves the working efficiency, and simultaneously improves the forming quality of the lower layer plate of the horizontal warehouse, so that the construction of the lower layer plate of the horizontal warehouse is more efficient and convenient;
2. when the invention is used specifically, the investment of the frame material is less, the construction period is short, and in the future construction similar to the double-layer roof of the single-storey house, the hanging mould system can be customized and improved according to the actual situation on site, so that the project can be completed efficiently and safely.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:
FIG. 1 is an overall structure diagram of a lower slab suspension formwork system for a double-deck roof of a horizontal warehouse according to the present invention;
FIG. 2 is a schematic view of the connection relationship of the suspension bar, the fixed angle steel, the nut and the roof truss beam according to the present invention;
FIG. 3 is a schematic view of the connection between the roof truss beam and the lifting pedestal according to the present invention;
FIG. 4 is a schematic view of the connection between the main runner and the lifting runner ear plate of the present invention;
FIG. 5 is a schematic view of the connection between a suspended form keel and an ear plate of the suspended form keel according to the invention;
FIG. 6 is a schematic structural view of the suspension bar of the present invention;
in the figure: 1-lifting keel, 2-main keel, 3-profiled steel sheet, 4-template, 5-electric block, 6-mould lifting keel, 7-lifting rib, 8-fixed angle steel, 9-nut, 10-lifting keel lug plate, 11-roof truss beam, 12-lifting base and 13-mould lifting keel lug plate.
Detailed Description
As shown in fig. 1, the overall structure schematic diagram of the lower slab suspended formwork system of the double-layer roof of the flat-house storehouse of the invention comprises a lifting keel 1, a main keel 2, a profiled steel sheet 3, an electric hoist 5, a suspended formwork keel 6, a hanging rib 7 and a roof truss beam 11, wherein the main keel 2 is welded on the upper part of the lifting keel 1, the two are vertically connected and fixed, the profiled steel sheet 3 is welded on the upper part of the main keel 2, a formwork 4 is laid on the upper part of the profiled steel sheet 3, and a lifting keel ear plate 10 is also welded on the upper part of the main keel 2, as shown in fig. 2, the overall structure schematic diagram of the connection relationship between the main keel 2 and the lifting keel.
Roof truss roof beam 11's roof truss body upper portion is provided with promotes base 12, as shown in fig. 3, for roof truss roof beam 11 and the relation of connection sketch map that promotes base 12, fixedly connected with hangs mould fossil fragments 6 on promoting base 12, and it has hangs mould fossil fragments otic placode 13 to weld on hanging mould fossil fragments 6, hangs as in electronic calabash 5, as shown in fig. 4, for hanging mould fossil fragments 6 and hanging mould fossil fragments otic placode 13's relation of connection sketch map.
The mould fossil fragments otic placode 13 that hangs on mould fossil fragments 6 is installed on electric block 5's upper portion, and the lower part is connected through leading chain and main joist 2 go up welded promotion fossil fragments otic placode 10, and the length of leading the chain can realize main joist 2's hoist and mount promotion through controlling electric block 5 to transfer.
The hanging bar 7 is bent into a U-shaped structure by a round bar, external threads are arranged at two ends of the U-shaped structure, and a nut 9 with a corresponding size is configured, as shown in fig. 5, the hanging bar 7 is in a structural schematic view. The roof truss girder 11 is welded with a fixed angle steel 8, after the main joist 2 is lifted in place, the main joist 2 and the roof truss girder 11 are connected and fixed by using a hanging rib 7, the fixed angle steel 8 and a nut 9, as shown in fig. 6, the connection relationship between the four is a schematic diagram.
The lifting keel 1, the main keel 2 and the hanging mould keel 6 are all made of rectangular steel pipes, the cross-sectional dimension of the lifting keel is 400mm multiplied by 200mm multiplied by 5mm, the length of a single rectangular pipe is 6m, and the rectangular pipe joint is formed by connecting two steel plates with the same specification through high-strength bolts.
The profiled steel sheet 3 has the specification of YX48-200-600, the span is 3m, the overlapping length of the two end parts on the main keel 2 is 400mm, and the two end parts are fixed on the main keel 2 through bolt connection.
A construction method for a lower slab suspended formwork system of a double-layer roof of a horizontal warehouse comprises the following construction steps:
the method comprises the following steps: the positions of an electric hoist 5 and a lifting keel 1 are released on a steel structure roof truss according to an original design drawing, the lifting keel 1, a main keel 2, a profiled steel sheet 3 and a template 4 are installed in place through a crane before the steel structure roof truss is installed, the position of a lifting point of the lifting keel 1 corresponds to the position of the electric hoist 5, and meanwhile, a lifting keel ear plate 10 and a suspension mould keel ear plate 13 are accurately positioned and welded;
step two: the whole die lifting system is lifted by the electric hoist 5, and is synchronously lifted by the computer control box, the electric hoist 5, the hoist chain and the die lifting system are checked to ensure that the die lifting system is always in a horizontal state in the lifting process until the designed elevation;
step three: the hanging die system is temporarily fixed on the main keel 2 during ground assembly, and when the hanging die system is lifted to a design position on the electric hoist 5, the hanging ribs 7 are fixed on a lower-layer roof truss beam 11 of the steel roof truss through the nuts 9 and the fixing angle steels 8;
step four: after the suspended formwork system is installed, the construction load is controlled when the next process is carried out, the construction load is guaranteed to be 2KN/m2, meanwhile, reinforcing steel bars and templates are piled to avoid concentrated stacking, then concrete is poured by a ground pump, a steel pipe is adopted as a vertical pump pipe, a hose is adopted along the axis of the roof truss, and concrete in the storehouse is poured while retreating;
s5: lower floor's board concrete strength reaches 100% after, carries out demolising of template system, and electric block 5 lifts up promotion fossil fragments 1 and the laminating of main joist 2, then carries out lifting bar 7 with the ascending vehicle and cuts off, for guaranteeing construction safety, lifting bar 7 cuts off the order and the installation order is opposite, then utilizes electric block 5 to descend lifting die system and template to the bottom plate through lower floor's board reservation hole in step, demolishs the lifting die system in proper order and transports out the storehouse in, accomplishes whole work progress.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A mould hanging system for a lower layer plate of a double-layer roof of a horizontal warehouse is characterized by comprising a lifting keel (1), a main keel (2), a profiled steel sheet (3), an electric hoist (5), a mould hanging keel (6), a hanging rib (7) and a roof truss beam (11);
the upper part of the lifting keel (1) is welded with a main keel (2), the main keel and the main keel are vertically connected and fixed, the upper part of the main keel (2) is welded with a compression steel plate (3), the upper part of the compression steel plate (3) is paved with a template (4), and the upper part of the main keel (2) is also welded with a lifting keel ear plate (10);
a lifting base (12) is arranged on the upper portion of the beam body of the roof truss beam (11), a hanging die keel (6) is fixedly connected onto the lifting base (12), and a hanging die keel lug plate (13) is welded onto the hanging die keel (6) and used for hanging the electric hoist (5);
the upper part of the electric hoist (5) is arranged on a mould hanging keel lug plate (13) on the mould hanging keel (6), the lower part of the electric hoist is connected with a lifting keel lug plate (10) welded on the main keel (2) through a guide chain, and the lifting of the main keel (2) can be realized by controlling the length of the guide chain descending of the electric hoist (5);
hang muscle (7) and bend into U type structure by round steel bar, the external screw thread has been seted up at both ends to dispose corresponding size nut (9), the welding has fixed angle steel (8) on roof truss roof beam (11), promotes the back that targets in place at main joist (2), utilizes and hangs muscle (7), fixed angle steel (8) and nut (9) to be connected fixedly main joist (2) and roof truss roof beam (11).
2. The suspended formwork system for the lower plate of the double-deck roof of the horizontal warehouse as claimed in claim 1, wherein the lifting keel (1) and the suspended formwork keel (6) are made of rectangular steel pipes, and the cross-sectional dimension of the suspended formwork system is 400mm x 200mm x 5 mm.
3. The suspended formwork system for the lower plate of the double-layer roof of the horizontal warehouse as claimed in claim 1, wherein the main keel (2) is made of rectangular steel pipes with the cross-sectional dimension of 400 x 200 x 5mm, the length of a single rectangular pipe is 6m, and the joints of the rectangular pipes are made of two same-specification steel plates which are connected through high-strength bolts.
4. The formwork system for the lower plate of the double-deck roof of the horizontal warehouse as claimed in claim 1, wherein the profiled steel sheet (3) has a size of YX48-200 and 600, a span of 3m, a lap length of 400mm at two ends of the main keel (2), and is fixed on the main keel (2) by bolt connection.
5. A construction method for a lower slab suspended formwork system of a double-layer roof of a horizontal warehouse is characterized by comprising the following construction steps:
s1: the method comprises the following steps that the positions of an electric hoist (5) and a lifting keel (1) are released on a steel structure roof truss according to an original design drawing, the lifting keel (1), a main keel (2), a profiled steel sheet (3) and a template (4) are installed in place through a crane before the steel structure roof truss is installed, the position of a lifting point of the lifting keel (1) corresponds to the position of the electric hoist (5), and meanwhile, a lifting keel lug plate (10) and a lifting die keel lug plate (13) are accurately positioned and welded;
s2: the whole hoisting die system is hoisted by adopting the electric hoist (5), and is synchronously hoisted through the computer control box, the hoisting die system needs to be stopped periodically in the hoisting process, the electric hoist (5), the hoist chain and the hoisting die system are checked, and the hoisting die system is ensured to be in a horizontal state all the time in the hoisting process until the designed elevation is reached;
s3: the hoisting die system is temporarily fixed on the main keel (2) during ground assembly, and when the hoisting die system is lifted to a design position by the electric hoist (5), the hoisting rib (7) is fixed on a lower-layer roof truss beam (11) of the steel roof truss by a fixed angle steel (8) through a nut (9);
s4: after the suspended formwork system is installed, the construction load is controlled when the next process is carried out, the construction load is guaranteed to be 2KN/m2, meanwhile, reinforcing steel bars and templates are piled to avoid concentrated stacking, then concrete is poured by a ground pump, a steel pipe is adopted as a vertical pump pipe, a hose is adopted along the axis of the roof truss, and concrete in the storehouse is poured while retreating;
s5: lower floor's board concrete strength reaches 100% back, carry out demolising of template system, electronic calabash (5) are mentioned and are promoted fossil fragments (1) and main joist (2) laminating, then hang muscle (7) with the car of ascending a height and cut off, for guaranteeing construction safety, hang muscle (7) and cut off order and installation order opposite, then utilize electronic calabash (5) to descend mould system and template to the bottom plate through lower floor's board reservation hole in step, demolish in proper order in the mould system of hanging and transport out of the warehouse, accomplish whole work progress.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010695513.4A CN112012479A (en) | 2020-07-20 | 2020-07-20 | Suspended formwork system for lower layer plate of double-layer roof of horizontal warehouse and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010695513.4A CN112012479A (en) | 2020-07-20 | 2020-07-20 | Suspended formwork system for lower layer plate of double-layer roof of horizontal warehouse and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115324364A (en) * | 2022-08-25 | 2022-11-11 | 中轻(广州)钢结构有限公司 | Steel structure roof truss sliding construction method |
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Application publication date: 20201201 |