CN111395743A - Special-shaped clear water concrete structure steel formwork and construction method thereof - Google Patents
Special-shaped clear water concrete structure steel formwork and construction method thereof Download PDFInfo
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- CN111395743A CN111395743A CN202010216851.5A CN202010216851A CN111395743A CN 111395743 A CN111395743 A CN 111395743A CN 202010216851 A CN202010216851 A CN 202010216851A CN 111395743 A CN111395743 A CN 111395743A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 169
- 239000010959 steel Substances 0.000 title claims abstract description 169
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000009415 formwork Methods 0.000 title claims description 81
- 239000002344 surface layer Substances 0.000 claims description 55
- 239000010410 layer Substances 0.000 claims description 44
- 230000003014 reinforcing effect Effects 0.000 claims description 39
- 229910000746 Structural steel Inorganic materials 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
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- 238000005498 polishing Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 238000010422 painting Methods 0.000 claims description 2
- 206010066054 Dysmorphism Diseases 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003672 processing method Methods 0.000 abstract description 3
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
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- 229920001971 elastomer Polymers 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
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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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/06—Forming boards or similar elements the form surface being of metal
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
- E04G17/042—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by threaded elements
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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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/063—Solidifying concrete, e.g. by application of vacuum before hardening making use of vibrating or jolting tools
- E04G21/065—Solidifying concrete, e.g. by application of vacuum before hardening making use of vibrating or jolting tools acting upon the shuttering
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- Engineering & Computer Science (AREA)
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Abstract
The invention provides a special-shaped bare concrete structure steel template and a construction method thereof, wherein the construction method comprises the following steps: go up template unit, lower vest template unit, adjustable horizontal connecting rod and flat vibrator, every template unit includes steel template surface course and enhancement layer, steel template surface course and enhancement layer welded connection, and flat vibrator is attached to on the enhancement layer of steel template, through bolted connection between the adjacent template unit, go up and connect angle regulation through adjustable horizontal connecting rod between the template unit. The combined template meets the requirements of strength, rigidity and stability of the template, and meanwhile, the intelligent and industrialized processing and manufacturing method also improves the construction efficiency and the construction precision and meets the appearance requirement of the special-shaped clear water concrete. In addition, all through bolt fixed connection between template unit, adjustable horizontal connecting rod and the dull and stereotyped vibrator, the template transportation of being convenient for improves turnover efficiency, also makes things convenient for the ann of built-up templates to tear open.
Description
Technical Field
The invention relates to a special-shaped bare concrete structure steel formwork and a construction method thereof.
Background
The bare concrete refers to a cast-in-place concrete project which takes an original surface formed after concrete pouring or a concrete surface which is subjected to protective treatment by a transparent protective agent as an outer surface and shows an aesthetic effect through the color and texture of the concrete and the appearance quality of elaborate and precise construction. Common fair-faced concrete formworks are wood beam (including aluminum beam) plywood formworks, 50mm thick wood boards, all-steel decorative formworks, cast aluminum decorative formworks and wood plywood decorative formworks.
Relevant tests and engineering practices show that the wood template has the advantage of low cost, but the wood template is difficult to meet design modeling and large in template matching difficulty, and cannot meet the requirement of splicing seams and is large in material waste, low in template rigidity and large in deformation during operation; the conventional steel template easily meets the requirement of common design and modeling, the template material is not easy to waste, the rigidity of the template is relatively large, but for pouring a large-size special-shaped fair-faced concrete structure, the rigidity of the conventional steel template can not meet the construction requirement, the difficulty in molding and processing the special-shaped curved surface of the conventional steel template is large, and the influence of bubbles when pouring the fair-faced concrete is also an important factor influencing the appearance. The glass fiber reinforced plastic, rubber, engineering plastic and other templates which are raised recently according to needs can meet the design and modeling requirements, are simple to operate and can meet the splicing seam requirements, the template material is not easy to waste, but the template is slightly weak in rigidity and easy to deform during operation.
Disclosure of Invention
The invention aims to provide a special-shaped clear water concrete structure steel formwork and a construction method thereof.
In order to solve the above problems, the present invention provides a special-shaped clear water concrete structure steel form, comprising:
the upper support template unit is formed by splicing upper support semicircular steel templates, and each upper support semicircular steel template comprises an upper support steel template surface layer and an upper support reinforcing layer which are mutually welded and connected;
the lower waistcoat template unit is formed by splicing lower waistcoat semi-circular steel templates, and each lower waistcoat semi-circular steel template comprises a lower waistcoat steel template surface layer and a lower waistcoat reinforcing layer which are mutually welded and connected;
the two ends of the adjustable horizontal connecting rod are respectively connected with the two upper template units;
a flat plate vibrator attached to the upper reinforcing layer.
Further, in the above method, the upper and lower armor steel form surface layers are each a pickled steel plate having a thickness of 6 mm.
Further, in the above method, the upper connecting seam between the upper semicircular arc steel templates and the lower waistcoat connecting seam between the lower waistcoat semicircular arc steel templates are kept continuous;
the upper supporting connecting seam and the lower waistcoat connecting seam are positioned in the same plane with the axial lead of an upper supporting variable cross-section cylinder of the special-shaped clear water concrete member to be formed by the special-shaped clear water concrete structure steel template;
the surface of a section seam between the upper supporting template unit and the lower waistcoat template unit is vertical to the axial lead plane of the upper supporting variable cross-section cylinder of the special-shaped clear water concrete member.
Further, in the method, the end parts of the upper supporting steel formwork surface layers on the two sides of the upper supporting connecting seam and the end parts of the lower armor steel formwork surface layers on the two sides of the lower armor connecting seam are respectively provided with angle steel, angle steel bolt holes and positioning pin holes are respectively formed in the angle steel, and the angle steel is connected with the end parts of the upper supporting steel formwork surface layers through the matching of angle steel bolts and the angle steel bolt holes; the positioning pin is matched with the positioning pin hole to connect the two paired angle steels.
Further, in the method, flanges are respectively arranged at the end part of the upper supporting steel formwork surface layer of the upper supporting formwork unit and the end part of the lower supporting steel formwork surface layer of the lower supporting steel formwork unit on two sides of the segment gap, flange bolt holes are formed in the flanges, and the two matched flanges are connected through the matching of the flange bolts and the flange bolt holes.
Further, in the method, the vertical height of the upper supporting steel template surface layer exceeds the bottom elevation of the upper horizontal structure by 20 mm.
Further, in the method, the upper reinforcing layer is an axial channel steel keel and a radial channel steel keel with equal cross sections, wherein the axial channel steel keel and the radial channel steel keel are vertically crossed and arranged at equal intervals;
the lower waistcoat reinforcing layer is a uniform-section steel plate keel, wherein the uniform-section steel plate keel is uniformly arranged in a crossed mode according to a geometric characteristic curve.
Further, in the method, the upper steel template surface layer is also connected with a connecting plate, the connecting plate is provided with a connecting plate bolt hole, and the connecting plate is connected with the adjustable horizontal connecting rod 3 through the matching of a connecting bolt and the connecting plate bolt hole.
Further, in the above method, an additional plate is further attached to the upper reinforcing layer, and the plate vibrator is attached to the additional plate by a plate bolt.
According to another aspect of the present invention, there is also provided a construction method of the profiled fair-faced concrete structural steel form, which adopts any one of the profiled fair-faced concrete structural steel form described above, the method comprising:
performing three-dimensional modeling based on a structural design drawing of a special-shaped clear water concrete structure to be cast, introducing secondary processing data into a cutting machine tool, performing block cutting on a planar steel plate by adopting a laser technology, and allocating and dividing the number of blocks of an upper formwork unit and a lower formwork unit according to the bending degree of a curved surface;
leading the three-dimensional data of the upper supporting template unit and the lower waistcoat template unit with the determined number of the blocks into a bending machine, and bending and pressing the planar steel plates cut in the blocks by using the bending machine to respectively form an upper supporting steel template surface layer of the upper supporting template unit and a lower waistcoat steel template surface layer of the lower waistcoat template unit;
welding an upper reinforcing layer on the outer surface of the upper supporting steel template surface layer to form the upper supporting template unit;
welding a lower waistcoat reinforcing layer on the outer surface of the lower waistcoat steel template surface layer to form a lower waistcoat template unit;
polishing the inner surfaces of the welding seams of the upper steel template surface layer and the upper reinforcing layer and the inner surfaces of the welding seams of the lower armor steel template surface layer and the lower armor reinforcing layer respectively;
painting red lead anti-rust paint for the second degree on the outer surface of the waistcoat template unit of the upper template unit respectively;
binding reinforcing steel bars on site to form a reinforcing cage of the special-shaped clear water concrete structure to be cast, wherein before binding the reinforcing steel bars, a reinforcing steel bar positioning hoop is welded on a stiff steel structure of the special-shaped clear water concrete structure to be cast;
transporting the upper formwork unit and the lower armor formwork unit to the site, and assembling the upper formwork unit and the lower armor formwork unit on the outer side of the reinforcement cage in sequence according to the serial numbers of the upper formwork unit and the lower armor formwork unit to form a special-shaped clear water concrete structure steel formwork;
connecting the upper template units with adjustable horizontal connecting rods, and adjusting the final in-plane included angle between the upper template units;
calibrating the final out-of-plane inclination angle of the upper template unit through projection paying-off on the floor slab, and finally fixing;
temporarily attaching a plurality of groups of flat plate vibrators on the upper reinforcing layer;
and alternately blanking and pouring the fair-faced concrete by using a hose at the upper port of the upper supporting template unit, keeping the suspension time of the alternate blanking for about 5 minutes, starting the vibrator 4 during the suspension of the blanking for about 10 seconds, and ensuring that bubbles in the fair-faced concrete are fully removed.
Compared with the prior art, the invention comprises the following steps: go up template unit, lower vest template unit, adjustable horizontal connecting rod and flat vibrator, every template unit includes steel template surface course and enhancement layer, steel template surface course and enhancement layer welded connection, and flat vibrator is attached to on the enhancement layer of steel template, through bolted connection between the adjacent template unit, go up and connect angle regulation through adjustable horizontal connecting rod between the template unit. The combined template meets the requirements of strength, rigidity and stability of the template, and meanwhile, the intelligent and industrialized processing and manufacturing method also improves the construction efficiency and the construction precision and meets the appearance requirement of the special-shaped clear water concrete. In addition, all through bolt fixed connection between template unit, adjustable horizontal connecting rod and the dull and stereotyped vibrator, the template transportation of being convenient for improves turnover efficiency, also makes things convenient for the ann of built-up templates to tear open.
Drawings
FIG. 1 is a front elevation view of a profiled bare concrete structural steel form in accordance with an embodiment of the present invention;
FIG. 2 is a side elevation view of a profiled bare concrete structural steel form in accordance with an embodiment of the present invention;
FIG. 3 is a diagram of an adjustable horizontal connecting rod node of an embodiment of the present invention;
wherein, 1-an upper supporting template unit; 2-lower waistcoat template unit; 3-adjustable horizontal connecting rod; 4-a flat plate vibrator; 5-axial channel steel keel; 6-radial channel steel keel; 7-1-supporting a steel template surface layer; 7-2-setting a armor steel template surface layer; 8-equal section steel plate keel; 9-an additional plate; 10-connecting plate bolt holes; 11-positioning pin holes; 12-upper supporting connecting seam; 13-segmental seams; 14-angle steel; 15-a flange; 16-a connecting plate; 17-a locating pin; the horizontal structure bottom elevation 18.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 3, the present invention provides a special-shaped clear water concrete structure steel form, comprising:
the upper template unit 1 is formed by splicing upper semicircular steel templates, and each upper semicircular steel template comprises an upper steel template surface layer 7-1 and an upper reinforcing layer which are mutually welded and connected;
the lower end of the upper formwork unit 1 is respectively communicated with the lower formwork unit 2, the lower formwork unit 2 is formed by splicing lower armor semi-circular steel formworks, and each lower armor semi-circular steel formwork comprises a lower armor steel formwork surface layer 7-2 and a lower armor reinforcing layer which are mutually welded and connected;
the two ends of the adjustable horizontal connecting rod 3 are respectively connected with the two upper template units 1;
a flat plate vibrator 4, the flat plate vibrator 4 being attached to the upper reinforcing layer.
Here, each template unit includes steel template surface course and enhancement layer, steel template surface course and enhancement layer welded connection, the flat vibrator is attached to on the enhancement layer of steel template, through bolted connection between adjacent formwork unit 1 and the lower vest template unit 2. The upper supporting template units are connected through adjustable horizontal connecting rods.
The profiled fair-faced concrete structure steel template and the construction method can be used for casting a large-volume profiled fair-faced concrete structure, and have the advantages of simple and convenient application, high construction precision, high strength, high rigidity, good stability, small deformation and the like. The appearance quality of the fair-faced concrete can be ensured.
In an embodiment of the special-shaped clear water concrete structure steel template, the upper supporting steel template surface layer 7-1 and the lower supporting steel template surface layer 7-2 are acid-washed steel plates with the thickness of 6mm respectively.
In one embodiment of the special-shaped clear water concrete structure steel template, an upper support connecting seam between the upper support semi-circular steel templates and a lower waistcoat connecting seam between the lower waistcoat semi-circular steel templates are kept continuous;
the upper supporting connecting seam 12 and the lower waistcoat connecting seam are in the same plane with the axial lead of an upper supporting variable cross-section cylinder of the special-shaped clear water concrete member to be formed by the special-shaped clear water concrete structure steel template;
the surface of a section seam between the upper supporting template unit and the lower waistcoat template unit is vertical to the axial lead plane of the upper supporting variable cross-section cylinder of the special-shaped clear water concrete member.
The semicircular arc connecting joints between the upper template units and the semicircular arc connecting joints between the lower waistcoat template units are kept continuous, so that only one arc connecting joint is formed on the surface of a special-shaped clear water concrete member formed by the special-shaped clear water concrete structural steel template in the following process, and the surface of the special-shaped clear water concrete member in the following process is easy to treat;
the semicircular haar-shaped connecting seam and the axial lead of an upper variable cross-section cylinder of the special-shaped clear water concrete component to be formed by the special-shaped clear water concrete structure steel template are in the same plane, and the surface of a section seam 13 between the upper template unit and the lower waistcoat template unit is vertical to the axial lead plane of the upper variable cross-section cylinder of the special-shaped clear water concrete component, so that the upper template unit and the lower waistcoat template unit are accurately installed.
As shown in fig. 1, in an embodiment of the special-shaped bare concrete structural steel form of the invention, the vertical height of the upper supporting steel form surface layer exceeds the bottom elevation of the upper horizontal structure by about 18 mm, which is convenient for node assembly.
As shown in fig. 1 to 3, in an embodiment of the special-shaped clear water concrete structure steel formwork, the upper reinforcing layer is an axial channel steel keel 5 and a radial channel steel keel 6 with equal cross sections, wherein the axial channel steel keel 5 and the radial channel steel keel 6 are perpendicularly crossed and arranged at equal intervals;
the lower waistcoat reinforcing layer is a uniform-section steel plate keel 8, wherein the uniform-section steel plate keel is uniformly arranged in a crossed mode according to a geometric characteristic curve.
As shown in fig. 1 to 3, in an embodiment of the special-shaped bare concrete structural steel formwork, angle steels 14 are respectively arranged at the end of an upper formwork surface layer 7-1 at two sides of an upper connecting seam and the end of a lower armour formwork surface layer 7-2 at two sides of a lower armour connecting seam, angle steel bolt holes and positioning pin holes 11 are respectively arranged on the angle steels, and the angle steels are connected with the end of the upper formwork surface layer 7-1 through the matching of angle steel bolts and the angle steel bolt holes; the positioning pin 17 is matched with the positioning pin hole 11 to connect two paired angle steels so as to splice the upper semicircular arc steel templates or the lower armor semicircular arc steel templates.
Here, in the above-mentioned combined steel formwork, the steel formwork surface layer end portions of the formwork units on both sides of the semicircular arc connecting seam are provided with angle steel 14, the angle steel is provided with bolt holes and positioning pin holes 11, the bolt holes are 200mm, the distance between the positioning pin holes can be set to 1000mm, and the formwork units on both sides of the semicircular arc connecting seam are connected through positioning pins 17 on the angle steel.
As shown in fig. 1 to 3, in an embodiment of the special-shaped bare concrete structural steel formwork of the invention, flanges 15 are respectively arranged at the end of the upper formwork surface layer 7-1 of the upper formwork unit 1 and the end of the lower armour formwork surface layer 7-2 of the lower armour formwork unit 2 on both sides of the segment gap 13, flange bolt holes are formed in the flanges 15, and the two paired flanges 15 are connected through the matching of the flange bolts and the flange bolt holes.
Here, flanges 15 are respectively arranged at the ends of the steel formwork surface layers of the formwork units on the two sides of the segment seam 13, bolt holes are formed in the flanges 15, the bolt holes are 200mm, and the formwork units on the two sides of the segment seam 13 are connected through bolts on the flanges.
As shown in fig. 1 to 3, in an embodiment of the special-shaped bare concrete structural steel form of the present invention, a connecting plate 16 is further connected to the upper steel form surface layer 7-1, a connecting plate bolt hole 10 is formed in the connecting plate 16, and the connecting plate 16 is connected to the adjustable horizontal connecting rod 3 through the matching of a connecting bolt and the connecting plate bolt hole 10.
As shown in fig. 1 to 3, in an embodiment of the special-shaped bare concrete structural steel form of the present invention, an additional flat plate 9 is further connected to the upper reinforced layer, and the flat plate vibrator 4 is attached to the additional flat plate 9 through a flat plate bolt.
The invention also provides another construction method for the special-shaped bare concrete structure steel template, which comprises the following steps:
the method comprises the steps of firstly, performing three-dimensional modeling based on a structural design drawing of the special-shaped clear water concrete structure to be cast, importing secondary processing data into a cutting machine tool, performing block cutting on a planar steel plate by adopting a laser technology, and allocating and dividing the number of blocks of an upper formwork unit 1 and a lower formwork unit 2 according to the bending degree of a curved surface.
Secondly, guiding the three-dimensional data of the upper and lower vest template units 1 and 2 with the determined number of the blocks into a bending machine, and bending and pressing the cut planar steel plates by using the bending machine to respectively form an upper vest steel template surface layer 7-1 of the upper vest template unit 1 and a lower vest steel template surface layer 7-2 of the lower vest template unit 2;
thirdly, welding an upper reinforcing layer on the outer surface of the upper supporting steel template surface layer 7-1 to form an upper supporting template unit 1;
axial channel steel keels can be welded on the outer sides of the upper supporting steel formwork surface layers 7-1 along the axial direction, radial channel steel keels are welded on the outer sides of the axial channel steel keels, and the distance between the keels is determined according to the calculation of the lateral pressure of concrete;
fourthly, welding a lower waistcoat reinforcing layer on the outer surface of the lower waistcoat steel template surface layer 7-2 to form a lower waistcoat template unit 2;
steel plate keels can be welded on the outer side of the lower vest steel formwork surface layer 7-2 along a geometric characteristic curve path, crossed steel plate keels are welded uniformly, and the distance between the keels is determined according to calculation of the side pressure of concrete.
Fifthly, polishing the inner surfaces of the welding seams of the upper steel template surface layer 7-1 and the upper reinforcing layer and the inner surfaces of the welding seams of the lower armor steel template surface layer 7-2 and the lower armor reinforcing layer respectively, wherein the polishing needs to be standard and level, and the influence of the welding seams is reduced;
sixthly, symmetrically arranging additional flat plates 9 and connecting plates 16 at equal intervals on the outer side of the upper reinforcing layer 7-1 according to the concrete pouring height of the special-shaped clear water concrete structure to be poured;
seventhly, coating red lead antirust paint on the outer surface of the waistcoat template unit 2 of the upper template unit 1 for two degrees respectively, and uniformly coating the paint;
and eighthly, binding reinforcing steel bars on site to form a reinforcing cage of the special-shaped fair-faced concrete structure to be cast, wherein before binding the reinforcing steel bars, a reinforcing steel bar positioning hoop is welded on a stiff steel structure of the special-shaped fair-faced concrete structure to be cast, so that the thickness of a protective layer of the special-shaped fair-faced concrete structure is ensured not to deviate, and the phenomenon of rib leakage on the surface of the fair-faced concrete during stripping is avoided.
And ninthly, transporting the upper formwork unit 1 and the lower armor formwork unit 2 to the site, and assembling the outer sides of the reinforcement cages according to the serial numbers of the upper formwork unit 1 and the lower armor formwork unit 2 in sequence to form the special-shaped bare concrete structural steel formwork.
The lower waistcoat template unit can be installed firstly, then the upper supporting template unit is installed, the template units can be temporarily fixed through the positioning pin holes in the angle steels on the two sides of the semicircular arc connecting seam, and the template units are preliminarily fixed to form an integral template system.
And step ten, connecting the upper formwork units with the adjustable horizontal connecting rods 3 through the connecting plates, adjusting the included angle in the plane between the final upper formwork units, and ensuring that the included angle in the plane is stable when the liquid concrete is subjected to self-weight influence during pouring.
And step eleven, calibrating the final out-of-plane inclination angle of the upper template unit through projection paying-off on the floor, and finally fixing.
And step ten, temporarily attaching a plurality of groups of flat plate vibrators on an additional flat plate outside the upper reinforcing layer through bolts.
And step thirteen, silica gel is used for filling gaps on the upper branch connecting seam and the lower waistcoat connecting seam, and an adhesive tape is attached, so that the pouring influence of the abutted seams on the clear water concrete is reduced to the maximum extent.
And fourteenth, alternately blanking and pouring the clear water concrete by using a hose at the upper port of the upper supporting template unit 1, keeping the suspension time of the alternate blanking for about 5 minutes, starting the vibrator 4 during the suspension of the blanking for about 10 seconds, and ensuring that bubbles are fully removed.
In summary, the combined template provided by the invention is a deepened design, a process is updated, and intelligent manufacturing is performed on a traditional steel template, and comprises an upper template unit, a lower armored template unit, an adjustable horizontal connecting rod and a flat plate vibrator, wherein each template unit comprises a steel template surface layer and a reinforcing layer, the steel template surface layer is welded with the reinforcing layer, the flat plate vibrator is attached to the reinforcing layer of the steel template, adjacent template units are connected through a bolt, and the upper template unit is connected with the upper template unit through the adjustable horizontal connecting rod to adjust the angle. The combined template meets the requirements of strength, rigidity and stability of the template, and meanwhile, the intelligent and industrialized processing and manufacturing method also improves the construction efficiency and the construction precision and meets the appearance requirement of the special-shaped clear water concrete. In addition, all through bolt fixed connection between template unit, adjustable horizontal connecting rod and the dull and stereotyped vibrator, the template transportation of being convenient for improves turnover efficiency, also makes things convenient for the ann of built-up templates to tear open.
In addition, the special-shaped bare concrete structural steel formwork and the construction method thereof can ensure the special-shaped accuracy of the steel formwork panel by using a digital laser cutting technology, ensure the included angle accuracy of the special-shaped upper supporting steel formwork unit by using the adjustable horizontal connecting rod, ensure the appearance texture of bare concrete by using a pouring technology of alternately pouring intermittently at two sides and momentarily operating a flat vibrator to remove bare concrete bubbles, ensure the construction quality, have simple and reasonable design structure and convenient assembly and disassembly and are beneficial to construction.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a dysmorphism clear water concrete structure steel form which characterized in that includes:
the upper support template unit is formed by splicing upper support semicircular steel templates, and each upper support semicircular steel template comprises an upper support steel template surface layer and an upper support reinforcing layer which are mutually welded and connected;
the lower waistcoat template unit is formed by splicing lower waistcoat semi-circular steel templates, and each lower waistcoat semi-circular steel template comprises a lower waistcoat steel template surface layer and a lower waistcoat reinforcing layer which are mutually welded and connected;
the two ends of the adjustable horizontal connecting rod are respectively connected with the two upper template units;
a flat plate vibrator attached to the upper reinforcing layer.
2. The profiled fair-faced concrete structural steel form of claim 1, wherein the upper and lower armor steel form facings are each a 6mm thick pickled steel plate.
3. The profiled fair-faced concrete structural steel form of claim 1, wherein an upper connecting seam between the upper semicircular arc steel forms and a lower waistcoat connecting seam between the lower waistcoat semicircular arc steel forms are kept continuous;
the upper supporting connecting seam and the lower waistcoat connecting seam are positioned in the same plane with the axial lead of an upper supporting variable cross-section cylinder of the special-shaped clear water concrete member to be formed by the special-shaped clear water concrete structure steel template;
the surface of a section seam between the upper supporting template unit and the lower waistcoat template unit is vertical to the axial lead plane of the upper supporting variable cross-section cylinder of the special-shaped clear water concrete member.
4. The profiled clear water concrete structural steel formwork of claim 3, wherein the ends of the upper formwork surface layer on both sides of the upper connecting seam and the ends of the lower armour formwork surface layer on both sides of the lower armour connecting seam are respectively provided with an angle steel, the angle steel is respectively provided with an angle steel bolt hole and a positioning pin hole, and the angle steel is connected with the end of the upper formwork surface layer through the matching of an angle steel bolt and the angle steel bolt hole; the positioning pin is matched with the positioning pin hole to connect the two paired angle steels.
5. The profiled clear water concrete structural steel formwork of claim 3, wherein flanges are respectively arranged at the end part of the upper formwork unit upper formwork surface layer and the end part of the lower armour formwork unit lower armour formwork surface layer at two sides of the segment joint, flange bolt holes are arranged on the flanges, and the two paired flanges are connected through the matching of the flange bolts and the flange bolt holes.
6. The profiled fair-faced concrete structural steel form of claim 1, wherein the vertical height of the upper support steel form face layer exceeds the upper horizontal structural bottom elevation by 20 mm.
7. The profiled clear water concrete structural steel form of claim 1, wherein the upper reinforcing layer is an axial channel steel joist and a radial channel steel joist with equal cross sections, wherein the axial channel steel joist and the radial channel steel joist are perpendicularly crossed and arranged at equal intervals;
the lower waistcoat reinforcing layer is a uniform-section steel plate keel, wherein the uniform-section steel plate keel is uniformly arranged in a crossed mode according to a geometric characteristic curve.
8. The profiled fair-faced concrete structural steel form of claim 1, wherein a connecting plate is further connected to the upper supporting steel form surface layer, a connecting plate bolt hole is formed in the connecting plate, and the connecting plate is connected with the adjustable horizontal connecting rod 3 through matching of a connecting bolt and the connecting plate bolt hole.
9. The profiled fair-faced concrete structural steel form of claim 1, wherein an additional flat plate is further connected to the upper reinforcing layer, and the flat plate vibrator is attached to the additional flat plate through a flat plate bolt.
10. A construction method of a profiled fair-faced concrete structural steel form, characterized in that the profiled fair-faced concrete structural steel form of any one of claims 1 to 9 is adopted, the method comprising:
performing three-dimensional modeling based on a structural design drawing of a special-shaped clear water concrete structure to be cast, introducing secondary processing data into a cutting machine tool, performing block cutting on a planar steel plate by adopting a laser technology, and allocating and dividing the number of blocks of an upper formwork unit and a lower formwork unit according to the bending degree of a curved surface;
leading the three-dimensional data of the upper supporting template unit and the lower waistcoat template unit with the determined number of the blocks into a bending machine, and bending and pressing the planar steel plates cut in the blocks by using the bending machine to respectively form an upper supporting steel template surface layer of the upper supporting template unit and a lower waistcoat steel template surface layer of the lower waistcoat template unit;
welding an upper reinforcing layer on the outer surface of the upper supporting steel template surface layer to form the upper supporting template unit;
welding a lower waistcoat reinforcing layer on the outer surface of the lower waistcoat steel template surface layer to form a lower waistcoat template unit;
polishing the inner surfaces of the welding seams of the upper steel template surface layer and the upper reinforcing layer and the inner surfaces of the welding seams of the lower armor steel template surface layer and the lower armor reinforcing layer respectively;
painting red lead anti-rust paint for the second degree on the outer surface of the waistcoat template unit of the upper template unit respectively;
binding reinforcing steel bars on site to form a reinforcing cage of the special-shaped clear water concrete structure to be cast, wherein before binding the reinforcing steel bars, a reinforcing steel bar positioning hoop is welded on a stiff steel structure of the special-shaped clear water concrete structure to be cast;
transporting the upper formwork unit and the lower armor formwork unit to the site, and assembling the upper formwork unit and the lower armor formwork unit on the outer side of the reinforcement cage in sequence according to the serial numbers of the upper formwork unit and the lower armor formwork unit to form a special-shaped clear water concrete structure steel formwork;
connecting the upper template units with adjustable horizontal connecting rods, and adjusting the final in-plane included angle between the upper template units;
calibrating the final out-of-plane inclination angle of the upper template unit through projection paying-off on the floor slab, and finally fixing;
temporarily attaching a plurality of groups of flat plate vibrators on the upper reinforcing layer;
and alternately blanking and pouring the fair-faced concrete by using a hose at the upper port of the upper supporting template unit, keeping the suspension time of the alternate blanking for about 5 minutes, starting the vibrator 4 during the suspension of the blanking for about 10 seconds, and ensuring that bubbles in the fair-faced concrete are fully removed.
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| CN202010216851.5A CN111395743A (en) | 2020-03-25 | 2020-03-25 | Special-shaped clear water concrete structure steel formwork and construction method thereof |
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