CN109457872B - Cast-in-situ frame column reinforcement cage prefabricated construction device and construction method - Google Patents
Cast-in-situ frame column reinforcement cage prefabricated construction device and construction method Download PDFInfo
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- CN109457872B CN109457872B CN201811453536.3A CN201811453536A CN109457872B CN 109457872 B CN109457872 B CN 109457872B CN 201811453536 A CN201811453536 A CN 201811453536A CN 109457872 B CN109457872 B CN 109457872B
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 126
- 238000010276 construction Methods 0.000 title claims abstract description 50
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 98
- 239000010959 steel Substances 0.000 claims abstract description 98
- 238000003466 welding Methods 0.000 claims description 17
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000012545 processing Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 24
- 239000010410 layer Substances 0.000 description 20
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 210000003205 muscle Anatomy 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009417 prefabrication Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
-
- 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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a prefabricated construction device and a construction method for a cast-in-situ frame column reinforcement cage, wherein the construction device comprises an upper fixing frame, a middle fixing frame, a lower fixing frame and a plurality of stirrup distance brackets, the upper fixing frame, the middle fixing frame and the lower fixing frame all comprise rectangular frames, a plurality of detachable fixtures which are respectively in one-to-one correspondence with column longitudinal ribs are fixedly connected to the inner sides of the rectangular frames, a plurality of upright rods which extend downwards are uniformly and fixedly connected to the outer sides of the rectangular frames of the lower fixing frame, a bottom bracket capable of moving up and down is detachably arranged at the bottom of each upright rod, each stirrup distance bracket comprises a vertical rod, a plurality of comb teeth which are respectively in one-to-one correspondence with the stirrups are uniformly distributed on the vertical rods along the up and down direction, and a fixing plate is fixedly connected to the tops of the vertical rods and detachably connected with the upper fixing frame. The invention has the beneficial effects that: the steel bar cage is formed by combining profile steel and steel bars, can be prefabricated in advance in a processing field, is integrally assembled and hoisted, and is rapidly bound and formed on site.
Description
Technical Field
The invention relates to the technical field of cast-in-situ frame column reinforcement cage prefabricated assembly construction, in particular to a cast-in-situ frame column reinforcement cage prefabricated assembly construction device and a construction method.
Background
In the conventional cast-in-situ frame and frame-shear wall structure system, the manufacturing and installation of the reinforcement engineering occupy a very large proportion in the construction, and no matter the material cost, the labor cost or the consumed labor cost is critical to the economic benefit of the whole building. Meanwhile, procedures such as reinforcing steel bar engineering, template installation, hydropower embedding, structural concrete pouring and the like are mutually inserted and restrained, and the traditional construction process is biased to on-site operation, so that the labor intensity of workers is high, the technical level is uneven, and whether each construction link is coordinated and compact or not directly influences the safety, quality, working efficiency and construction cost of the structural engineering.
Along with the increasingly popularization of the assembly type building, the concrete and steel bar component prefabrication technology gradually forms an emerging industry which is reformed and upgraded in the building industry, the component prefabrication technology transfers a large amount of field work to the operation of a processing plant, and mass production is carried out by adopting an industrialized and standardized manufacturing mode, so that a large amount of manpower resources can be saved, the construction period is effectively shortened, and the safety, quality and efficiency of the whole construction process are improved.
The mature mode of the assembled building industry chain is still not sound due to the imbalance of the economic structure and the industry system in China, the traditional cast-in-situ frame and frame-shear wall structure is still widely applied, but the advantages of the prefabrication technology of the reinforcing steel bar components are difficult to be effectively exerted in the whole cast-in-situ structure, especially the reinforcing steel bar installation of cast-in-situ frame columns is difficult to realize due to the precision requirement of the mechanical connection of the reinforcing steel bars, the prebinding installation of the reinforcing steel bar cage is difficult to realize, and besides the foundation layer, the column reinforcing steel bars above +/-0 are still installed manually root by root at present, and the site operation is greatly depended. In the traditional process, column reinforcement cage construction is generally carried out by sleeving column hoop reinforcements on column longitudinal reinforcements extending from the lower layer, then lengthening the longitudinal reinforcements one by one, drawing stirrup interval lines on the longitudinal reinforcements, then gradually translating the sleeved stirrups upwards, and binding the sleeved stirrups one by one from top to bottom. The construction method has a plurality of defects, and is specifically expressed as follows:
1. after the steel bar semi-finished product manufactured in the background is vertically transported to a floor, manual secondary transportation is needed, a large number of auxiliary workers are needed on site, and huge labor cost is consumed.
2. When the longitudinal ribs are lengthened, the longitudinal ribs are required to be erected manually and connected one by one, the labor intensity is high, the upper parts of the longitudinal ribs generally lack sufficient supporting measures, and the longitudinal ribs are easy to bend and deform.
3. The stirrup sleeved on the lower part of the longitudinal bar in advance is time-consuming and labor-consuming, and needs to be matched by multiple persons, and is transferred up and down for multiple times, so that the working efficiency is low, the construction speed is low, and the manual investment is increased.
4. When the stirrup moves upwards, the stirrup is difficult to pass through the straight threaded connecting sleeve of the longitudinal stirrup, especially when the section of the column and the diameter of the longitudinal stirrup are large, the composite stirrups are crisscrossed vertically and horizontally, the number is various, the outer diameter of the connecting sleeve exceeds the inner distance of the stirrup, the stirrup is difficult to lift up smoothly, and only the inner distance of the stirrup can be expanded or a hard bending pry can be forced to pass through, so that the stirrup is deformed.
5. According to construction standard requirement, the intersection point of stirrup corner and longitudinal bar should adopt to twine and detain the ligature, guarantee stirrup and longitudinal bar perpendicular and close to paste, and on-the-spot workman is for laborsaving quick, adopts simple and easy in order to detain the ligature in succession, and the stirrup is difficult to the complete reconversion if take place to warp, and the corner can not be closely and hook longitudinal bar, leads to the main bar protective layer to not satisfy the design requirement, and has changed the stress state of reinforcing bar in the structure, reduces the bearing capacity and the shock resistance of component.
6. The existing mature technology of the reinforcing steel bar prefabrication technology applied to the cast-in-situ structure is lacking, the traditional method is used all the time, the technology is updated slowly, the operation level and responsibility of the technology workers are uneven, the quality management is bottleneck, and the defect of the traditional construction method of the reinforcing steel bar engineering in the cast-in-situ structure exists for a long time.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides a cast-in-situ frame column reinforcement cage prefabricated assembly type construction device and a construction method, which can replace the traditional complex process of manually carrying secondarily, erecting longitudinal reinforcements one by one and gradually upwards moving and distributing stirrups, and solve the defects of complex operation procedure, low construction speed, high labor cost, low working efficiency, reinforcement deformation and the like commonly existing in the current frame column reinforcement construction, thereby fundamentally ensuring the installation quality of the frame column reinforcement. The column reinforcement cage can be prefabricated in advance in a processing field, integrally assembled and hoisted, and is formed by rapid binding on site. The utility model has the advantages of can have enough to meet the need the use many times, simplify the construction process, improve work efficiency, practice thrift manpower resources, realize reduce cost, accelerate the construction progress.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
the utility model provides a prefabricated assembled construction equipment of cast-in-place frame post steel reinforcement cage, includes upper portion mount, middle part mount, lower part mount and a plurality of stirrup distance support, upper portion mount middle part mount with the lower part mount all includes rectangular frame, rectangular frame inboard fixedly connected with a plurality of respectively with post longitudinal reinforcement one-to-one and detachable fixer, the rectangular frame outside fixedly connected with of lower part mount many downwardly extending's of equipartition pole setting, the bottom detachably of pole setting is provided with the collet that can reciprocate, stirrup distance support includes the montant, along upper and lower direction equipartition on the montant have a plurality of respectively with stirrup one-to-one's broach, the top fixedly connected with fixed plate of montant, the fixed plate with upper portion mount detachable connection.
Further, the rectangular frame comprises four groups of steel bars which are distributed in a rectangular mode, two adjacent groups of steel bars are detachably connected through angle steel, and each group of steel bars comprises at least two steel bars.
Further, the fastener includes a hook bolt.
Further, the fixer also comprises two distance steel bars, and the distance between the two distance steel bars corresponds to the outer diameter of the column longitudinal steel bars.
Further, a plurality of detachable tee fixing fasteners are uniformly distributed on the vertical rods along the up-down direction, and the tee fixing fasteners are connected with a plurality of fixing cross bars.
Further, the collet is fixedly connected with an adjustable screw rod, and the adjustable screw rod is detachably connected with the vertical rod.
Further, the comb teeth are obliquely upwards arranged, and an included angle of 45 degrees is formed between the vertical rods and the comb teeth.
Further, a plurality of hanging rings are fixedly connected to the outer side of the rectangular frame of the upper fixing frame.
The invention also discloses a construction method, which comprises the following steps:
s1, enabling column longitudinal ribs sleeved with stirrups outside to sequentially pass through an upper fixing frame, a middle fixing frame and a lower fixing frame, and fixing the column longitudinal ribs firmly through a fixer;
s2, installing a stirrup distance bracket on the upper fixing frame, temporarily binding the stirrup distance bracket with the middle fixing frame and the lower fixing frame respectively, uniformly distributing stirrups by using the stirrup distance bracket, and completing the assembly of the assembled column reinforcement cage;
s3, integrally hoisting the assembled column reinforcement cage by using a tower crane, installing a bottom bracket after the assembled column reinforcement cage is hoisted in place so as to adjust the height of the assembled column reinforcement cage, temporarily fixing the lower fixing frame and the column reinforcement cage extending out of the lower layer, and disassembling a fixer so as to enable the assembled column reinforcement cage to be in butt joint with the column reinforcement cage extending out of the lower layer;
s4, binding the column longitudinal ribs and the stirrups;
and S4, after binding is completed, the upper fixing frame, the middle fixing frame, the lower fixing frame and the stirrup spacing bracket are disassembled.
Further, in S3, the lower fixing frame temporarily fixes the column reinforcement cage extending from the lower layer through a tee fixing fastener and a fixing cross bar.
The invention has the beneficial effects that: the steel bar and the steel bar are combined to form the steel bar cage, the steel bar cage can be prefabricated in advance in a processing field, the whole assembly type hoisting and the on-site rapid binding and forming can replace the traditional complex process of manually carrying secondarily, erecting longitudinal bars one by one and gradually upwards moving and distributing stirrups, the defects of complex operation procedure, low construction speed, high labor cost, low working efficiency, steel bar deformation and the like existing in the current construction of the frame column steel bar are overcome, the method has the advantages that the common quality problems of deformation of the column reinforcement cage and uneven gaps between stirrups are effectively prevented, the quality and the overall performance of the assembly of the frame column reinforcement cage are improved, the turnover is realized for multiple times, the construction process is simplified, the work efficiency is improved, a large amount of manpower resources are saved, the cost is reduced, the construction progress is accelerated, and the experience is accumulated for the wide popularization and application of the assembled building.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an upper mount according to an embodiment of the present invention;
FIG. 2 is a schematic view of a mid-section mount according to an embodiment of the present invention;
FIG. 3 is a schematic view of a lower mount according to an embodiment of the present invention;
fig. 4 is a schematic view of a lower fixing frame connected with a bottom bracket of a reinforcement cage according to an embodiment of the present invention;
FIG. 5 is a schematic view of a stirrup distance holder according to an embodiment of the invention;
fig. 6 is a schematic view of a column reinforcement cage in an assembly forming process according to an embodiment of the present invention;
fig. 7 is a schematic view of a reinforcement cage bottom bracket according to an embodiment of the present invention.
In the figure:
1. an upper fixing frame; 2. a middle fixing frame; 3. a lower fixing frame; 4. a stirrup spacing bracket; 5. a fixing plate; 6. a vertical rod; 7. a bottom support; 8. angle steel; 9. a hook bolt; 10. spacing reinforcing steel bars; 11. a tee fixing fastener; 12. fixing the cross bar; 13. an adjustable lead screw; 14. and (5) hanging rings.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
As shown in fig. 1-7, the prefabricated assembly construction device for the cast-in-situ frame column reinforcement cage according to the embodiment of the invention comprises an upper fixing frame 1, a middle fixing frame 2, a lower fixing frame 3 and a plurality of stirrup distance brackets 4, wherein the upper fixing frame 1, the middle fixing frame 2 and the lower fixing frame 3 all comprise rectangular frames, a plurality of fixing devices which are respectively corresponding to column longitudinal reinforcements one by one and are detachable are fixedly connected to the inner sides of the rectangular frames, a plurality of downward extending vertical rods 6 which are uniformly distributed are fixedly connected to the outer sides of the rectangular frames of the lower fixing frame 3, a bottom bracket 7 capable of moving up and down is detachably arranged at the bottoms of the vertical rods 6, the stirrup distance brackets 4 comprise vertical rods, a plurality of comb teeth which are respectively corresponding to the stirrups one by one are uniformly distributed on the vertical rods along the up and down directions, a fixing plate 5 is fixedly connected to the tops of the vertical rods, and the fixing plate 5 is detachably connected with the upper fixing frame 1.
In a specific embodiment of the present invention, the rectangular frame includes four groups of steel bars distributed in a rectangular shape, two adjacent groups of steel bars are detachably connected through angle steel 8, and each group of steel bars includes at least two steel bars.
In one embodiment of the invention, the anchor comprises a hooking screw 9.
In one embodiment of the invention, the holder further comprises two distance bars 10, the distance between the two distance bars 10 corresponding to the outer diameter of the column longitudinal bars.
In a specific embodiment of the present invention, a plurality of detachable three-way fixing fasteners 11 are uniformly distributed on the upright rod 6 along the up-down direction, and the three-way fixing fasteners 11 are connected with a plurality of fixing cross bars 12.
In a specific embodiment of the present invention, the shoe 7 is fixedly connected with an adjustable screw rod 13, and the adjustable screw rod 13 is detachably connected with the upright rod 6.
In a specific embodiment of the invention, the comb teeth are arranged obliquely upwards, and an included angle of 45 degrees is formed between the vertical rods and the comb teeth.
In a specific embodiment of the present invention, a plurality of hanging rings 14 are fixedly connected to the outer side of the rectangular frame of the upper fixing frame 1.
The invention also discloses a construction method, which comprises the following steps:
s1, enabling column longitudinal ribs sleeved with stirrups outside to sequentially pass through an upper fixing frame 1, a middle fixing frame 2 and a lower fixing frame 3, and fixing the column longitudinal ribs firmly through a fixer;
s2, installing a stirrup distance bracket 4 on the upper fixing frame 1, respectively binding the stirrup distance bracket 4 with the middle fixing frame 2 and the lower fixing frame 3 temporarily, uniformly distributing stirrups by utilizing the stirrup distance bracket 4, and completing the assembly of the assembled column reinforcement cage;
s3, integrally hoisting the assembled column reinforcement cage by using a tower crane, installing a bottom bracket 7 after the assembled column reinforcement cage is hoisted in place so as to adjust the height of the assembled column reinforcement cage, temporarily fixing the lower fixing frame 3 and the lower-layer extending column reinforcement cage, and disassembling a fixer so as to enable the assembled column reinforcement cage to be in butt joint with the lower-layer extending column reinforcement cage;
s4, binding the column longitudinal ribs and the stirrups;
and S4, after binding is completed, the upper fixing frame 1, the middle fixing frame 2, the lower fixing frame 3 and the stirrup distance bracket 4 are disassembled.
In one embodiment of the present invention, in S3, the lower fixing frame 3 temporarily fixes the lower protruding column reinforcement cage through the tee fixing buckle 11 and the fixing cross bar 12.
In order to facilitate understanding of the above technical solutions of the present invention, the following describes the above technical solutions of the present invention in detail by a specific usage manner.
The invention relates to a prefabricated construction device for a cast-in-situ frame column reinforcement cage, which is formed by combining a column longitudinal reinforcement fixing frame, a stirrup spacing bracket 4 and a reinforcement cage bottom bracket. The column longitudinal bar fixing frame comprises an upper fixing frame 1, a middle fixing frame 2 and a lower fixing frame 3. Wherein, angle steel 8 and M12 bolt combinations of phi 25 steel bars, 50 x 5mm and 50 x 75 x 5mm are used as column longitudinal bar fixing frames, lifting rings 14 made of phi 20mm steel bars are welded on an upper fixing frame 1, and upright bars 6 made of phi 45 x 3.5mm steel pipes are welded on a lower fixing frame 3; welding stirrup distance brackets by using steel bars with the diameter of phi 12mm, steel bars with the diameter of phi 8mm and steel plates with the thickness of 3 mm; the steel bar cage bottom bracket is combined by phi 48 x 3.5mm steel pipes and three-way fixing fasteners 11, and the column steel bar cage extending out of the lower layer is locked.
When the column template is actually used in the field, the position line of the column template is popped up, the slurry at the top of the column is cleaned until stones are fully exposed, column longitudinal ribs of a column reinforcement cage which extends out of the lower layer are corrected, then hoops required on the extending column longitudinal ribs are sleeved, and binding is completed according to the designed interval; the layer of column reinforcement cage is assembled and formed in a reinforcement processing field in advance, the lower fixing frame 3 is firstly fixed vertically by a steel pipe diagonal bracing temporarily, 6 phi 12 short reinforcements which extend horizontally are locked by a hook bolt 9, the lower part is sleeved by a transverse steel pipe support pad, and the other end of the stirrup is provided with a fixing frame 1 at the upper part of the vertical column. The column longitudinal ribs are penetrated and locked on the upper fixing frame 1 and the lower fixing frame 3 according to the designed interval by using the hook bolt 9 of M12. Drawing lines on the column longitudinal bars according to the stirrup intervals, extracting short steel bars with the diameter of 12mm, distributing the stirrups according to the designed intervals, then installing a middle fixing frame 2, respectively clamping the stirrup distance brackets 4 on four sides of the column longitudinal bar fixing frame, connecting two ends of the stirrup distance brackets 4 on the column longitudinal bar fixing frame and clamping the stirrups, wherein the stirrups are not bound with the longitudinal bars temporarily; the column reinforcement cage is integrally hoisted by using a tower crane, the vertical rod 6 welded on the lower fixing frame 3 is inserted into the adjustable screw rod 13 with a bottom support, elevation is adjusted to enable the connection positions of the longitudinal ribs to be approximately matched, the three-way fixing fastener 11 is used for connecting and fixing the cross rod 12 and locking the column reinforcement cage with the lower layer extending out, the stability of the whole reinforcement cage is kept, and the tower crane can unhook and hoist the next group of column reinforcement cage.
The hook bolts 9 on the column longitudinal bar fixing frame are loosened one by one, the column longitudinal bar joints are mechanically connected and then the hooping bars are bound, the column longitudinal bar fixing frame, the hooping bar spacing support 4 and the reinforcement cage bottom support are disassembled, and the column reinforcement cage integral molding is completed.
The process comprises the following operation steps: measuring elastic wires, cleaning column top floating paste, binding column reinforcement cages extending from the lower layer, manufacturing column longitudinal reinforcement fixing frames, hooping distance brackets 4 and reinforcement cage bottom brackets, assembling and forming the column reinforcement cages of the layer, integrally hoisting, adjusting elevation, fixing the reinforcement cage bottom brackets, connecting longitudinal reinforcements, binding column hoops, disassembling the column longitudinal reinforcement fixing frames, the hooping distance brackets 4 and the reinforcement cage bottom brackets, and checking and accepting quality.
The material requirements are as follows: (1) a steel material: the Q235-B is adopted, the material of the steel meets the relevant regulations of GB/T1591-2008 of low alloy high strength structural steel and GB/T700-2006 of carbon structural steel, and the exposed iron parts are coated with the cloud iron alkyd antirust paint for two degrees.
(2) Reinforcing steel bar: and the strength standard value of the reinforcing steel bar is not less than 95% by adopting the HRB400 reinforcing steel bar.
(3) Welding rod: manual arc welding is adopted in the welding process, and an E4303 type welding rod is adopted as a welding rod.
(4) The bolts are all made of B-grade and Q235-B steel, and accord with the relevant regulations of GB/T5782-2000.
The manufacturing steps of the cast-in-situ frame column reinforcement cage prefabricated construction device (hereinafter referred to as a special tool) are as follows: the special tool is formed by combining a column longitudinal bar fixing frame, a column hoop bar spacing bracket 4 and a reinforcement cage bottom bracket.
(1) The method comprises the steps of manufacturing a column longitudinal bar fixing frame, wherein the column longitudinal bar fixing frame is divided into an upper fixing frame 1, a middle fixing frame 2 and a lower fixing frame 3, and is formed by combining phi 25 steel bars, angle steel 8 and M12 bolts.
2, manufacturing a middle fixing frame 2, and cutting out 2 phi 25 steel bars, wherein the blanking length is the width of a column section plus 15mm; 2 angle steels 8 with the length of 50 x 5mm are cut, the blanking length is 150mm, phi 14 bolt holes are drilled in the side faces respectively, and the center of the holes is 45mm away from the edge of the angle steel. The steel bars are arranged in the middle of the angle steel 8, the clear distance of the steel bars is kept to be 14mm, the steel bars are welded on two side surfaces of the angle steel 8 in parallel respectively, and double-sided continuous welding is adopted as a first component. And 4 first parts are manufactured by the same method and combined into a rectangular frame, and 8M 12 bolts penetrate into bolt holes on the angle steel 8 to be locked. And welding the head of the phi 12 steel bar on the phi 25 steel bar according to the design position of the column longitudinal bars to form a distance steel bar 10, extending 20mm, and additionally, preparing the hook bolts 9 of M12 according to the number of the column longitudinal bars for standby.
(2) The upper fixing frame 1 is manufactured, the manufacturing method of the upper fixing frame 1 is the same as that of the middle fixing frame 2, in addition, the outer sides of angle steel at four corners of the rectangular frame are welded into hanging rings 14 by phi 20 steel bars, double-sided connection welding is adopted, the welding seam length is 150mm, and the welding seam height is 5mm.
(3) 2 phi 25 steel bars are cut off by manufacturing a lower fixing frame 3, and the blanking length is the width of a column section plus 35mm; 2 angle steels 8 with the length of 50 x 75 x 5mm are cut, the blanking length is 150mm, phi 14 bolt holes are drilled in the side faces respectively, and the center of the holes is 45mm away from the edge of the angle steel 8. The steel bars are arranged in the middle of the angle steel 8, the clear distance of the steel bars is kept to be 14mm, and the steel bars are welded on two side surfaces of the angle steel 8 in parallel respectively to be used as a second component. The method comprises the steps of manufacturing 4 parts II by the same method, combining the parts II into a rectangular frame, penetrating 8M 12 bolts into bolt holes on angle steels 8 for locking, welding upright rods 6 made of steel pipes with phi 45 x 3.5mm at the outer sides of the angle steels 8 at four corners of the rectangular frame, wherein the upright rods 6 are 1350mm long, and welding by double-sided connection, wherein the welding length is 150mm, and the welding height is 5mm. In addition, the hook bolts 9 of M12 are arranged for standby according to the number of the column longitudinal ribs.
(2) 4, manufacturing a stirrup distance bracket 4, cutting out 4 phi 12 steel bars as vertical bars, wherein the blanking length is +100mm of the stirrup range of the layer of column steel reinforcement cage, welding phi 8 steel bars into comb teeth according to the spacing of 100mm, and forming an included angle of 45 degrees with the vertical bars, wherein the extension length is 50 mm. And 1 steel plate with the thickness of 3mm and the thickness of 50 x 100mm is vertically welded on the top surface of the vertical rod to serve as a fixing plate 5, and phi 14 bolt holes are drilled on the upper portion of the fixing plate 5 and are 25mm away from the top of the vertical rod.
The specific use is as follows: (1) And measuring the elastic line, measuring and placing the position line of the column template according to the positioning axis of the building, ejecting the ink line, and marking four corners of the column with red paint.
(2) Cleaning the top slurry, manually roughening until the stones are exposed out of the surface, and washing.
(3) Binding column reinforcement cages extending from the lower layer, trimming column longitudinal reinforcement of the column reinforcement cages extending from the lower layer, removing stains such as mortar, scribing on the column longitudinal reinforcement according to the design intervals of stirrups, calculating the number of the stirrups required on the extending column longitudinal reinforcement, sleeving the stirrups on the column longitudinal reinforcement extending from the lower layer, and binding by adopting winding buckles from top to bottom. The stirrup is perpendicular with the post longitudinal bar, and the post is indulged the stirrup interior angle of hugging closely, and the knot is towards post center, and the stirrup corner is all colligation with indulging the muscle intersection point, stirrup crotch coincide department along post four corners staggered arrangement.
(4) The method comprises the steps of (1) assembling and forming column reinforcement cages, namely assembling and forming the column reinforcement cages in a reinforcement processing field in advance, firstly temporarily fixing a lower fixing frame 3 vertically by using a steel pipe diagonal bracing, penetrating M12 hook bolts 9 into the middle of 2 phi 25 reinforcements around the lower fixing frame 3, temporarily locking 6 short phi 12 reinforcements which extend horizontally on the lower fixing frame 3, sleeving all calculated stirrups into the short reinforcements, closely arranging and standing, and using a transverse steel pipe support pad at the lower part; the other end is vertically provided with an upper fixing frame 1, and the distance between the upper fixing frame and the lower fixing frame 3 is +120mm within the range of the stirrup of the layer of column reinforcement cage; then penetrating the column longitudinal ribs, and locking the column longitudinal ribs on the upper fixing frame 1 and the lower fixing frame 3 by using M12 hook bolts 9 according to the designed positions and the intervals; scribing the column longitudinal bars according to the stirrup intervals, extracting phi 12 short bars, distributing the stirrups according to the scribed intervals, and then installing a middle fixing frame 2 in the stirrup clear distance to be locked with the column longitudinal bars by a hook bolt 9; the 4 stirrup distance brackets 4 penetrate from four sides of the column rib frame respectively, stirrups are clamped into comb teeth, the upper parts of vertical rods are fixed on the hook head bolts 9 of the upper fixing frame 1 through bolt holes on the fixing plate 5, the middle parts and the lower parts of the vertical rods are temporarily bound on the column rib fixing frame through binding wires, an assembled reinforcement cage is assembled, and the stirrups and the column ribs are temporarily not bound.
(5) The steel reinforcement cage is integrally lifted, the tower crane integrally lifts the assembled column steel reinforcement cage, 4-point binding lifting is adopted by using 2 steel wire ropes, lifting points are positioned on lifting rings 14 welded at four corners of an upper fixing frame 1, the steel wire ropes are locked by a clamping ring to integrally lift the steel reinforcement cage, 4 hemp ropes are simultaneously pulled on a lower fixing frame 3, and no distortion of the steel reinforcement cage during lifting is ensured through special personnel command operation on floors, so that the steel reinforcement cage is stable and safe. After the steel reinforcement cage is hoisted in place, 4 upright rods 6 welded on the lower fixing frame 3 are penetrated into a three-way fixing fastener 11 in advance, an adjustable screw rod 13 with a collet is inserted into the bottom of the steel reinforcement cage, and the elevation is adjusted to enable the connection positions of the column longitudinal ribs to be approximately consistent and slightly higher than the top surfaces of the column longitudinal ribs of the column steel reinforcement cage extending out of the lower layer.
(6) After the reinforcement cage bottom support is reinforced and the assembled column reinforcement cage is in place, the three-way fixing fasteners 11 on the vertical rods 6 are utilized to penetrate into the fixing cross rods 12, the column reinforcement cage which extends out of the bound lower layer is clamped, the three-way fixing fasteners 11 are mutually locked to form the reinforcement cage bottom support, the whole reinforcement cage is kept stable, and the tower crane can unhook and hoist the next group of column reinforcement.
(7) The column longitudinal ribs are connected, the hook bolts 9 on the column longitudinal rib fixing frame are loosened one by one, the alignment axes of the upper column longitudinal rib and the lower column longitudinal rib at the joint are screwed into the connecting sleeve, the connecting sleeve is screwed by a torque wrench until the torque wrench sounds, the screwing value of the joint is adopted according to the torque value specified in the table 1, the screwing is not required to be exceeded, and the screwed joint is marked.
Table 1 tightening torque values for reinforcing bar joints
Diameter of steel bar (mm) | 16 | 18 | 20 | 22 | 25~28 | 32 | 36~40 |
Tightening torque (N.m) | 118 | 145 | 177 | 216 | 275 | 314 | 343 |
(8) The stirrups of the binding columns are distributed with the gaps of the stirrups before the assembly type column reinforcement cage is hoisted and are temporarily fixed by the stirrups fixed by the distance brackets 4, and the binding can be directly carried out. The stirrup is perpendicular with the post and indulges the muscle, adopts twining knot method ligature, and the stirrup corner is all tied firmly with the post is indulged the muscle intersection point of muscle and stirrup non-corner portion and is become plum blossom or crisscross ligature, and the joint crotch coincide department of stirrup is along the vertical staggered arrangement of post to be located the stirrup and the post angle post is indulged the intersection point of muscle, and the top of the column stirrup interval is encrypted according to construction specification requirement. When the lacing wires are arranged as required by design, the lacing wires should hook the column longitudinal bars and the stirrups at the same time. After the hooping is bound, installing protective layer cushion blocks, and arranging the protective layer cushion blocks in a staggered way at a spacing of l000mm to ensure the thickness accuracy of the column longitudinal reinforcement protective layer.
(9) And after the column reinforcement cage is integrally formed, the column reinforcement fixing frame, the stirrup spacing support 4 and the reinforcement cage bottom support are disassembled. Firstly, unscrewing bolts on a fixing plate 5 at the upper part of the stirrup distance bracket 4, and taking out the stirrup distance bracket 4 integrally after 50mm of falling; then, connecting bolts on the upper fixing frame 1 and the middle fixing frame 2 are disassembled, and the connecting bolts are disassembled; finally, the fixing frame 3 and the steel reinforcement cage bottom support are disassembled, the disassembled parts are collected and cleaned in a concentrated mode, the disassembled parts are transported back to a processing field to be used in a circulating mode, and the mounted column steel reinforcement cage enters the next procedure after being inspected to be qualified.
In summary, by means of the technical scheme, the method can be applied to installation and construction of rectangular frame column reinforcement cages with various section sizes, is formed by combining profile steel and reinforcement, can be prefabricated into a reinforcement cage in advance in a processing field, is integrally assembled and hoisted, and is formed by rapid binding on site. The traditional manual secondary carrying is replaced, the column longitudinal bars are erected one by one, the complex process of distributing the stirrups is gradually moved upwards, the column reinforcement cage is effectively prevented from deforming, the stirrups are not uniform in spacing and are common in quality, the operation tool can be used in a circulating mode for many times, labor intensity of workers is relieved, a large amount of manpower resources are saved, cost is reduced, and construction progress is accelerated.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. The utility model provides a prefabricated assembly type construction device of cast-in-place frame post steel reinforcement cage, its characterized in that includes upper portion mount (1), middle part mount (2), lower part mount (3) and a plurality of stirrup distance support (4), upper portion mount (1), middle part mount (2) and lower part mount (3) all include rectangular frame, rectangular frame inboard fixedly connected with a plurality of respectively with post longitudinal reinforcement one-to-one and detachable fixer, rectangular frame outside fixedly connected with equipartition of lower part mount (3) many downwardly extending pole setting (6), the bottom detachably of pole setting (6) is provided with collet (7) that can reciprocate, stirrup distance support (4) include the montant, along upper and lower direction equipartition have a plurality of broachs with stirrup one-to-one respectively on the montant, fixed plate (5) are connected with to the top of montant is fixed, fixed plate (5) with upper portion mount (1) can dismantle and be connected; a plurality of detachable three-way fixing fasteners (11) are uniformly distributed on the vertical rod (6) along the up-down direction, and the three-way fixing fasteners (11) are connected with a plurality of fixing cross rods (12); welding the stirrup distance bracket (4) by using a steel bar with the diameter of phi 12mm, a steel bar with the diameter of phi 8mm and a steel plate with the thickness of 3 mm; the steel bar cage bottom bracket is formed by combining phi 48 x 3.5mm steel pipes and the three-way fixing fasteners (11), and the steel bar cage bottom bracket locks a column steel bar cage extending from the lower layer.
2. The cast-in-situ frame column reinforcement cage prefabricated assembly type construction device according to claim 1, wherein the rectangular frame comprises four groups of reinforcement bars distributed in a rectangular shape, two adjacent groups of reinforcement bars are detachably connected through angle steel (8), and each group of reinforcement bars comprises at least two reinforcement bars.
3. The cast-in-situ frame column reinforcement cage prefabricated construction device according to claim 1, characterized in that the anchor comprises a hooking bolt (9).
4. A cast-in-situ frame column reinforcement cage prefabricated construction device according to claim 3, characterized in that the holder further comprises two distance bars (10), the distance between the two distance bars (10) corresponding to the outer diameter of the column longitudinal bars.
5. The cast-in-situ frame column reinforcement cage prefabricated assembly type construction device according to claim 1, wherein the base (7) is fixedly connected with an adjustable screw rod (13), and the adjustable screw rod (13) is detachably connected with the vertical rod (6).
6. The prefabricated construction device for the reinforcement cage of the cast-in-situ frame column according to claim 1, wherein the comb teeth are obliquely upwards arranged, and an included angle of 45 degrees is formed between the vertical rods and the comb teeth.
7. The cast-in-situ frame column reinforcement cage prefabricated construction device according to claim 1, wherein a plurality of hanging rings (14) are fixedly connected to the outer side of the rectangular frame of the upper fixing frame (1).
8. A construction method using the cast-in-situ frame column reinforcement cage prefabricated assembly type construction device of claim 1, comprising the steps of:
s1, enabling column longitudinal ribs sleeved with stirrups outside to sequentially pass through an upper fixing frame (1), a middle fixing frame (2) and a lower fixing frame (3), and fixing firmly through a fixer;
s2, installing a stirrup distance bracket (4) on the upper fixing frame (1), binding the stirrup distance bracket (4) with the middle fixing frame (2) and the lower fixing frame (3) temporarily respectively, uniformly distributing stirrups by using the stirrup distance bracket (4), and completing the assembly of the assembled column reinforcement cage;
s3, integrally hoisting the assembled column reinforcement cage by using a tower crane, installing a bottom bracket (7) after the assembled column reinforcement cage is hoisted in place so as to adjust the height of the assembled column reinforcement cage, temporarily fixing the lower fixing frame (3) and the column reinforcement cage extending out of the lower layer, and disassembling a fixer so as to enable the assembled column reinforcement cage to be in butt joint with the column reinforcement cage extending out of the lower layer;
s4, binding the column longitudinal ribs and the stirrups;
and after S4 binding is completed, the upper fixing frame (1), the middle fixing frame (2), the lower fixing frame (3) and the stirrup distance bracket (4) are disassembled.
9. The construction method according to claim 8, wherein in S3, the lower fixing frame (3) temporarily fixes the lower protruding column reinforcement cage through a tee fixing fastener (11) and a fixing cross bar (12).
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CN111847217A (en) * | 2020-08-25 | 2020-10-30 | 广东博智林机器人有限公司 | Steel reinforcement cage hoisting device and steel reinforcement cage hoisting method |
CN114411557A (en) * | 2022-01-06 | 2022-04-29 | 中国五冶集团有限公司 | Cast-in-place box girder beam multi-layer steel bar installation support system device and construction method thereof |
CN114941400A (en) * | 2022-04-22 | 2022-08-26 | 上海市城市建设设计研究总院(集团)有限公司 | Comb tooth type upright post stirrup structure and shear resistance calculation method provided by comb teeth |
CN115506538B (en) * | 2022-09-21 | 2024-06-21 | 黄均贤 | Concrete skeleton structure made of composite connection assembly and construction method |
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