CN117905260A - Method for synchronous construction of large-span floor base layer and suspended ceiling and application structure - Google Patents
Method for synchronous construction of large-span floor base layer and suspended ceiling and application structure Download PDFInfo
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- CN117905260A CN117905260A CN202410249320.4A CN202410249320A CN117905260A CN 117905260 A CN117905260 A CN 117905260A CN 202410249320 A CN202410249320 A CN 202410249320A CN 117905260 A CN117905260 A CN 117905260A
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000001360 synchronised effect Effects 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 155
- 239000010959 steel Substances 0.000 claims abstract description 155
- 238000009432 framing Methods 0.000 claims abstract description 53
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 19
- 238000000227 grinding Methods 0.000 claims description 12
- 238000005336 cracking Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 7
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 238000005269 aluminizing Methods 0.000 claims description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 229920006267 polyester film Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims 1
- 238000005034 decoration Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
-
- 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
- E04G21/14—Conveying or assembling building elements
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a method for synchronously constructing a large-span floor base layer and a suspended ceiling, which comprises the following steps: creating a steel platform full framing scaffold combined system structure model, and leading out a detailed operation drawing through the model; step two, placing a steel frame support positioning line on site: positioning fixed points of the steel frame support on the structural beam or the structural column according to the model and the drawing, and carrying out actual measurement by on-site axis positioning to ensure the accuracy of the fixed points; step three, installing a steel frame support: installing chemical anchor bolts at the fixed points, and then sequentially installing upright posts and connecting rods; etc. The application structure comprises a steel frame support, a steel frame and a full framing scaffold. The structure is suitable for construction conditions that the horizontal and longitudinal spacing of the structural beams and the structural columns in the first floor ground structure is far greater than the maximum spacing of the upright poles of the full framing scaffold, and after erection, the large-span floor base layer and the suspended ceiling are constructed synchronously, so that the construction period is effectively shortened.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a method for synchronously constructing a large-span floor base layer and a suspended ceiling and an application structure.
Background
The full-framing scaffold system used in the construction of the large space at present is divided into a fastener type steel pipe scaffold, a socket type disc buckle type steel pipe scaffold and a plug type self-locking steel pipe support, the maximum spacing of the vertical rods of the full-framing scaffold is generally between 1.8m and 2.5m, the full-framing scaffold is suitable for the project that the construction period is long, and the construction can be carried out according to the construction procedure.
The utility model patent with the application number of CN202223100233.8 provides a transportation channel in a disc buckle type full framing, which comprises a structural bottom plate, wherein a plurality of groups of bottom brackets are arranged on the upper surface of the structural bottom plate, vertical rods are arranged at the upper ends of the bottom brackets, a cross rod and an inclined rod are arranged between two adjacent groups of vertical rods, a bracket body is formed among the plurality of groups of vertical rods, the cross rod and the inclined rod, a channel is arranged in the bracket body, transverse I-steel is arranged above the channel, and longitudinal I-steel is arranged at the upper ends of the transverse I-steel. Through horizontal I-steel and vertical I-steel setting, reserve transportation passageway in the full framing of dish knot formula, simultaneously according to transportation passageway width, upper portion load etc. requirement, adjustment I-steel and dish knot support's size, interval have satisfied the safety requirement of full framing, have solved the restriction of full framing, satisfy the current demand of material, personnel, transportation passageway simple structure in the full framing of dish knot formula, construction safety risk is less, and it is high-efficient convenient to install. Therefore, in the patent, the disc buckle type full framing is arranged on the structural bottom plate, but when the distance between the structural beam and the structural column supported below the structural bottom plate is far larger than the maximum distance between the vertical rods of the full framing scaffold and the construction period is shorter, most of the vertical columns can directly transmit force to the first floor structure floor slab, so that the problem that the weight of the full framing scaffold body cannot be met in the area of the floor slab can occur, and the whole construction safety is affected.
Disclosure of Invention
The invention aims to provide a method for synchronously constructing a large-span floor base layer and a suspended ceiling and an application structure thereof, wherein the application structure solves the problem that the weight of a full-framing scaffold cannot be met in the area of a floor when the transverse and longitudinal distances of a structural beam and a structural column in a first floor ground structure are far larger than the maximum distance of a full-framing scaffold vertical rod, so that the large-span floor base layer and the suspended ceiling can be synchronously constructed when the structure is applied.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a method for synchronously constructing a large-span floor base layer and a suspended ceiling,
Step one, a model drawing: creating a steel platform full framing scaffold combined system structure model, and leading out a detailed operation drawing through the model;
Step two, placing a steel frame support positioning line on site: positioning fixed points of the steel frame support on the structural beam or the structural column according to the model and the drawing, and carrying out actual measurement by on-site axis positioning to ensure the accuracy of the fixed points;
Step three, installing a steel frame support: installing chemical anchor bolts at the fixed points, and then sequentially installing upright posts and connecting rods;
a plurality of steel frames are transversely and longitudinally staggered and arranged at the top of the structural beam through steel frame supports;
Fifthly, setting up a full red scaffold on the basis of a steel frame;
step six, performing ground construction on the floor base layer, and synchronously performing suspended ceiling construction on the full framing scaffold;
step seven, dismantling the full framing scaffold and the steel frame in sequence after construction is completed;
And step eight, burying the steel frame support in a floor.
Preferably, the mounting of the upright post comprises the following steps: a1, cleaning the surface of concrete, and leveling; a2, drilling holes with corresponding quantity and size according to the sizes of the anchor bolts and the bottom plate; a3, the bottom plate is arranged at the position of the drawn line, and the bottom plate is flatly and closely attached to the ground during installation; a4, measuring when the web plate is installed, and ensuring the horizontal position and elevation; a5, welding a top plate on the top of the web plate.
Preferably, the installation of the steel frame comprises the following steps: s1, welding a temporary baffle plate on the outer side of the top plate; s2, transporting the longitudinal steel beam to the outer side of the upright post by adopting a forklift, and placing the longitudinal steel beam on a top plate; s3, manually fine-tuning the position of the longitudinal steel beam by using a crowbar; s4, spot welding and fixing are carried out after the transverse steel beam is positioned; s5, repeating the steps S1-S4, and installing another longitudinal steel beam; s6, removing the temporary baffle, and performing fillet welding on the longitudinal steel beam and the top plate by three sides of the fillet weld; s7, adopting a welding mode, connecting the web plate with the longitudinal steel beam through the diagonal brace, and connecting the diagonal brace with the web plate and the diagonal brace with the longitudinal steel beam through welding.
Preferably, the ground construction sequentially comprises: the method comprises the steps of paving an LC7.5 lightweight aggregate concrete filling layer, paving a DS cement mortar layer, paving a polyurethane waterproof layer with the thickness of 1.5mm, paving an extruded sheet heat preservation layer, paving a vacuum aluminizing polyester film insulation layer, paving a ground heating radiating pipe, paving a steel wire net piece anti-cracking layer, paving a C20 fine stone concrete layer, paving the DS cement mortar layer, paving a cement paste bonding layer, paving an anti-cracking base coat, paving an isolation PE film, paving a 50mm thick high-speed leveling layer, repairing an expansion joint, scraping and coating an anti-cracking inhibition film, paving a glass fiber layer, pasting an aluminum magnesium alloy strip, paving epoxy grinding stone, coarse grinding, middle grinding and fine grinding.
The steel platform full-framing scaffold combined system structure is erected on a floor base layer of a structural main body and comprises steel frame supports, steel frames and full-framing scaffolds, wherein the steel frames are connected to oppositely arranged structural beams in a crossing mode through the steel frame supports, a plurality of steel frames form steel platforms which are arranged in a transverse and longitudinal staggered mode, and the full-framing scaffolds are arranged above the steel platforms; the steel frame comprises two longitudinal steel beams and a plurality of transverse steel beams, and the two ends and the middle part of the two longitudinal steel beams are connected through the plurality of transverse steel beams; the steel frame support comprises two upright posts and a connecting rod.
Preferably, the steel frame spans at least two structural beams, and the end head of the steel frame is connected to the structural beams through a steel frame support; when at least two structural beams are three, a steel frame support is also arranged in the middle of the steel frame and connected with the structural beams; the steel frame is connected with the steel frame support through a plurality of diagonal braces.
Preferably, the joint of the ends of the two steel frames which are vertically arranged forms a closed rectangular frame.
Preferably, the upright posts are composed of a bottom plate, a top plate and web plates, a plurality of web plates are connected and supported between the bottom plate and the top plate, the bottom plate is fixed on the structural beam or the structural column, and a plurality of connecting rods are connected between the web plates of the two upright posts to connect the two upright posts.
According to the invention, through the stress characteristics analysis of the structural floor slab, the structural beam and the structural column, namely, the horizontal and longitudinal distances between the structural beam and the structural column are far larger than the maximum distance between the vertical rods of the full-framing scaffold, and the steel frame is arranged at the axial center of the structural beam and the structural column to bear the weight of the full-framing scaffold, so that the bearing capacity requirement is met, and the construction safety is improved.
According to the analysis result, the integral load is small, the full framing scaffold system meeting the requirement of building a large span is simultaneously considered comprehensively, the integral load of the self-locking steel pipe support system through accounting and splicing is small, the span of more than 7m can be built, and the operation requirement is met.
The steel frame is fixedly arranged on the structural beam and the structural column through the steel frame support, so that the combined system does not interfere with the construction of a first floor ground structure, such as floor heating, a panel and the like when being used for construction of a conversion layer and a decorative keel, and can be used for simultaneously constructing the bottom and the top, thereby effectively shortening the construction period.
Drawings
FIG. 1 is a top view of the overall structure of the present invention;
FIG. 2 is a front view of the overall structure of the present invention;
FIG. 3 is a schematic view of a portion of the structure of the present invention;
FIG. 4 is a schematic view of another part of the structure of the present invention.
1. A structural beam; 2. a structural column; 3. a steel frame support; 4. a steel frame; 5. full red scaffold; 6. a diagonal brace; 7. a temporary baffle; 30. a column; 31. a connecting rod; 40. longitudinal steel beams; 41. transverse steel beams; 50. a channel; 51. a cross bar; 52. a vertical rod; 53. a diagonal draw bar; 300. a bottom plate; 301. a top plate; 302. a web.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
The construction method of the large-span fixed steel platform full framing scaffold combination system shown in fig. 1-4 comprises the following steps:
Step one, a model drawing: and creating a steel platform full framing scaffold combined system structure model by using Tekla software, and deriving a detailed operation drawing through the model.
Step two, placing a steel frame support 3 positioning line on site: and positioning the fixed point positions of the steel frame supports 3 on the structural beam 1 or the structural column 2 according to the model and the drawing, and carrying out actual measurement by on-site axis positioning to ensure the accuracy of the fixed point positions.
Step three, mounting a steel frame support 3: the chemical anchor bolts are installed at the fixed points, and then the upright post 30 and the connecting rod 31 are installed in sequence.
The installation of the chemical anchor bolt comprises the following steps: measuring anchor bolt positioning on site, selecting a proper drill bit according to the size of a chemical anchor bolt, and drilling a hole to a required depth; during drilling, care needs to be taken to keep the drilling vertical and the hole wall smooth so as to ensure that the chemical anchor bolts have good adhesive force; after the hole is drilled, impurities in the hole are cleaned by using an air cylinder, and the hole is cleaned by using a cleaning brush, and the cleaning is usually repeated three times, so that the chemical anchor bolts are better attached to the hole; injecting the mixed chemical anchor bolts into the holes, and paying attention to the injection direction; knocking the anchor bolt into the hole with the coagulant, and drilling the bolt into the hole by using an electric tool, wherein the rotating speed is not more than 750 rpm; strictly forbidden to shake the anchor bolt before the solidification of the chemical coagulant, and waiting for enough time to harden according to the environmental temperature of the construction site; during the curing of the chemical anchor bolts, the treatment area is kept dry, so that the curing effect is ensured; after the strength requirement is met, the test is performed.
The mounting of the post 30 comprises the steps of: a1, cleaning the surface of concrete, and leveling; a2, drilling holes with corresponding quantity and size according to the sizes of the anchor bolts and the bottom plate 300; a3, the bottom plate 300 is arranged at the line drawing position, and the bottom plate 300 is flatly and closely attached to the ground during installation; the web 302 should be measured during installation to ensure horizontal position and elevation; a5, welding a top plate 301 on top of the web 302.
Step four, a plurality of steel frames 4 are transversely and longitudinally staggered and are installed at the top of the structural beam 1 through steel frame supports 3, and the installation of the steel frames 4 comprises the following steps: s1, welding a temporary baffle 7 on the outer side of a top plate 301; s2, transporting the longitudinal steel beams 40 to the outer sides of the upright posts 30 by adopting a forklift, and placing the longitudinal steel beams on the top plate 301; s3, manually fine-tuning the position of the longitudinal steel beam 40 by using a crowbar; s4, performing spot welding fixation after positioning the transverse steel beam 41; s5, repeating the steps S1-S4 to install another longitudinal steel beam 40; s6, removing the temporary baffle 7, and performing fillet welding on the longitudinal steel beam 40 and the top plate 301 by three sides of the fillet weld; s7, adopting a welding mode, connecting the web 302 and the longitudinal steel beam 40 through the diagonal brace 6, and connecting the diagonal brace 6 and the web 302 and the diagonal brace 6 and the longitudinal steel beam 40 through welding.
Fifthly, setting up a full framing scaffold 5 based on a steel frame 4: quality inspection and physical detection are carried out according to inspection standard requirements, and after the inspection is qualified, the transverse rod 51 and the upright rod 52 are erected, the diagonal draw rod 53 is erected, and the channel 50 is constructed.
The erection of the cross bar 51 and the upright 52 comprises the following steps: b1, welding a steel pipe with phi 48.3 multiplied by 2.75mm material Q355 and a C-shaped card formed by punching to form a cross rod 51 and a vertical rod 52; b2, arranging a horizontal cross bar for sweeping floor in the transverse and longitudinal directions; b3, when the full-house scaffold 5 is used for constructing a conversion layer steel frame and a decoration keel, the maximum height of the operation layer cross bar 51 is 8.25m; when the full-framing scaffold 5 is used for finishing decoration of a veneer, the maximum height of the full-framing scaffold 5 is 6.25m; b5, the maximum step distance of the cross rod 51 is 2.0m, the wedge-shaped fasteners capable of automatically rotating are arranged in the C-shaped cards at the two ends of the cross rod 51, and the wedge-shaped fasteners are firmly connected with the U-shaped fasteners on the upright rods 52.
The setting up of the diagonal draw bar 53 includes the steps of: c1, a diagonal draw bar 53 is arranged to divide a rectangular unstable structure formed by a cross bar 51 and a vertical rod 52 into stable triangular structures, and the connecting nodes are kept stable in the vertical face; c2, the diagonal draw bars 53 are vertically spaced apart by a standard step distance and are transversely spaced apart by a standard span distance; and C3, arranging diagonal rods of the cantilever scaffold part into tension rods in the overhanging direction, and arranging diagonal rods of double-row falling parts on two sides in an encrypted/continuous manner.
And step six, floor construction is carried out on the floor base layer, and suspended ceiling construction is synchronously carried out on the full framing scaffold 5.
The ground construction sequentially comprises the following steps: the method comprises the steps of paving an LC7.5 lightweight aggregate concrete filling layer, paving a DS cement mortar layer, paving a polyurethane waterproof layer with the thickness of 1.5mm, paving an extruded sheet heat preservation layer, paving a vacuum aluminizing polyester film insulation layer, paving a ground heating radiating pipe, paving a steel wire net piece anti-cracking layer, paving a C20 fine stone concrete layer, paving the DS cement mortar layer, paving a cement paste bonding layer, paving an anti-cracking base coat, paving an isolation PE film, paving a 50mm thick high-speed leveling layer, repairing an expansion joint, scraping and coating an anti-cracking inhibition film, paving a glass fiber layer, pasting an aluminum magnesium alloy strip, paving epoxy grinding stone, coarse grinding, middle grinding and fine grinding.
And seventhly, sequentially removing the full framing scaffold 5 and the steel frame 4 after construction is completed.
And step eight, burying the steel frame support 3 in a floor.
The steel platform full-framing scaffold combined system is erected on a structural main body floor base layer and comprises steel frame supports 3, steel frames 4 and full-framing scaffolds 5, wherein the steel frames 4 are transversely connected to oppositely arranged structural beams through the steel frame supports 3, a plurality of steel frames 4 form steel platforms which are transversely and longitudinally staggered, and the full-framing scaffolds 5 are arranged above the steel platforms; the steel frame 4 comprises two longitudinal steel beams 40 and a plurality of transverse steel beams 41, and the two ends and the middle part of the two longitudinal steel beams 40 are connected through the plurality of transverse steel beams 41; the steel frame support 3 comprises two upright posts 30 and connecting rods 31, wherein the upright posts 30 consist of a bottom plate 300, a top plate 301 and web plates 302, a plurality of web plates 302 are connected and supported between the bottom plate 300 and the top plate 301, the bottom plate 300 is fixed on the structural beam 1 or the structural column 2, and the plurality of connecting rods 31 are connected between the web plates 302 of the two upright posts 30 to connect the two upright posts 30. Both the diagonal braces 6 and the transverse steel beams 41 are made of angle steel.
The steel frame 4 spans at least two structural beams, and the end head of the steel frame 4 is connected to the structural beams through a steel frame support 3; when at least two structural beams are three, the middle part of the steel frame 4 is also provided with a steel frame support 3 which is connected with the structural beams; the steel frame 4 is also connected with the steel frame support 3 through a plurality of diagonal braces 6. The joint of the ends of the two steel frames 4 which are vertically arranged forms a closed rectangular frame.
The full framing scaffold 5 is a rod system structure with a plurality of channels 50 formed by erecting a plurality of transverse rods 51, a plurality of vertical rods 52 and a plurality of diagonal rods 53, the diagonal rods 53 are arranged between the vertical rods 52 on two sides of the channels 50 in an encrypted mode, the diagonal rods 53 are arranged to the top in a zigzag mode, the diagonal rods 53 at the suspension position of the channels 50 are arranged in a V-shaped mode, anti-collision isolation is further arranged on two sides of the channels 50, the width of the channels 50 is 3m, the net height is 2.7m, the form of the suspension scaffold is adopted, the vertical rods 52 on two sides of the channels 50 adopt ∅ 48.3.3 x 2.75-specification ADG vertical rods, and the distance between the vertical rods 52 is 1.0m. When the full-framing scaffold is used for construction of a conversion layer and a decoration keel, the vertical distance between the vertical rod and a public area wall and the vertical distance between the vertical rod and a column structure are controlled to be 700mm, and the front-back floating distance is controlled to be within a range of 100 mm. When the distance between the vertical rods and the wall is larger than 1m, the distance between the working surface and the vertical wall is adjusted by using the triangular bracket. When the full-framing scaffold is used for decoration construction of decorative panels, the distance between the vertical rods and the finishing surface of the public area wall and the column decoration is controlled to be 700mm, and the front-back floating distance is within the range of 100 mm. The transverse distance between the vertical rods falling on the steel structure platform at two sides of the horizontal construction channel is not more than 1.0m. The vertical rods of the suspended span structure are symmetrically arranged at intervals of 1.5m, 2.5m and 1.5m respectively. The distance between vertical rods of the full framing scaffold for wall elevation decoration is not more than 1.0m transversely and not more than 2.5m longitudinally. The distance between vertical rods of the full framing scaffold for top decoration is not more than 2m in the transverse and longitudinal directions.
In this project, through the analysis to first floor ground structure floor, the structure roof beam, structure post position and cross-section size, it is 180mm to know the floor thickness, roof beam cross-section size is 400 x 700mm, post cross-section size is 700 x 700mm, structure roof beam and the horizontal longitudinal distance of structure post are 9m, and the maximum interval of pole setting 52 of full framing scaffold 5 is 2.5mm, be less than the horizontal longitudinal distance of roof beam and post far away, when adopting traditional full framing scaffold to set up on the structure directly through the atress inspection, the problem that can't satisfy the weight of scaffold body in the floor area within range can appear, influence whole construction safety. The construction method is characterized by tight construction period, heavy task, more professional division, more construction procedures, centralized transportation and passing areas, and particularly in the first hall area.
The above embodiments are only a few descriptions of the inventive concept and implementation, and are not limited thereto, and the technical solutions without substantial transformation remain within the scope of protection under the inventive concept.
Claims (8)
1. A method for synchronously constructing a large-span floor base layer and a suspended ceiling is characterized by comprising the following steps:
Step one, a model drawing: creating a steel platform full framing scaffold combined system structure model, and leading out a detailed operation drawing through the model;
Secondly, placing a positioning line of the steel frame support (3) on site: positioning fixed point positions of the steel frame supports (3) on the structural beams (1) or the structural columns (2) according to the model and the drawing, and carrying out actual measurement by on-site axis positioning to ensure the accuracy of the fixed point positions;
Step three, installing a steel frame support (3): installing chemical anchor bolts at the fixed points, and then sequentially installing upright posts (30) and connecting rods (31);
A plurality of steel frames (4) are transversely and longitudinally staggered and are arranged at the top of the structural beam (1) through steel frame supports (3);
Fifthly, setting up a full-framing scaffold (5) on the basis of the steel frame (4);
step six, floor construction is carried out on the floor base layer, and suspended ceiling construction is synchronously carried out on the full-framing scaffold (5);
Step seven, sequentially dismantling the full framing scaffold (5) and the steel frame (4) after construction is completed;
And eighth, burying the steel frame support (3) in the floor.
2. The method according to claim 1, characterized in that: the mounting of the upright (30) comprises the following steps: a1, cleaning the surface of concrete, and leveling; a2, drilling holes with corresponding number and size according to the sizes of the anchor bolts and the bottom plate (300); a3, the bottom plate (300) is arranged at the line drawing position, and the bottom plate (300) is flatly and closely attached to the ground during installation; a4, measuring the web (302) during installation to ensure the horizontal position and elevation; a5, welding a top plate (301) on the top of the web plate (302).
3. The method according to claim 1, characterized in that: the installation of the steel frame (4) comprises the following steps: s1, welding a temporary baffle (7) on the outer side of the top plate (301); s2, transporting the longitudinal steel beam (40) to the outer side of the upright post (30) by adopting a forklift, and placing the longitudinal steel beam on the top plate (301); s3, manually fine-tuning the position of the longitudinal steel beam (40) by using a crowbar; s4, positioning the transverse steel beam (41) and then performing spot welding fixation; s5, repeating the steps S1 to S4, and installing another longitudinal steel beam (40); s6, removing the temporary baffle (7), wherein the longitudinal steel beam (40) and the top plate (301) are welded by adopting fillet weld three-edge girth welding; s7, adopting a welding mode, connecting the web plate (302) and the longitudinal steel beam (40) through the diagonal brace (6), and connecting the diagonal brace (6) and the web plate (302) and the diagonal brace (6) and the longitudinal steel beam (40) through welding.
4. The method of claim 1, wherein the ground construction comprises, in order: the method comprises the steps of paving an LC7.5 lightweight aggregate concrete filling layer, paving a DS cement mortar layer, paving a polyurethane waterproof layer with the thickness of 1.5mm, paving an extruded sheet heat preservation layer, paving a vacuum aluminizing polyester film insulation layer, paving a ground heating radiating pipe, paving a steel wire net piece anti-cracking layer, paving a C20 fine stone concrete layer, paving the DS cement mortar layer, paving a cement paste bonding layer, paving an anti-cracking base coat, paving an isolation PE film, paving a 50mm thick high-speed leveling layer, repairing an expansion joint, scraping and coating an anti-cracking inhibition film, paving a glass fiber layer, pasting an aluminum magnesium alloy strip, paving epoxy grinding stone, coarse grinding, middle grinding and fine grinding.
5. A steel platform full framing scaffold assembly architecture for use in the method of any one of claims 1-4, erected on a structural body floor substrate, characterized by: the full-framing scaffold comprises a steel frame support (3), steel frames (4) and full-framing scaffolds (5), wherein the steel frames (4) are transversely connected to oppositely arranged structural beams through the steel frame support (3), a plurality of steel frames (4) form steel platforms which are transversely and longitudinally staggered, and the full-framing scaffolds (5) are arranged above the steel platforms; the steel frame (4) comprises two longitudinal steel beams (40) and a plurality of transverse steel beams (41), and the two ends and the middle part of the two longitudinal steel beams (40) are connected through the plurality of transverse steel beams (41); the steel frame support (3) comprises two upright posts (30) and a connecting rod (31).
6. The steel platform full framing scaffold assembly architecture of claim 5, wherein: the steel frame (4) spans at least two structural beams, and the end head of the steel frame (4) is connected to the structural beams through a steel frame support (3); when at least two structural beams are three, a steel frame support (3) is also arranged in the middle of the steel frame (4) and is connected with the structural beams; the steel frame (4) is connected with the steel frame support (3) through a plurality of diagonal braces (6).
7. The steel platform full framing scaffold assembly architecture of claim 5, wherein: the joint of the ends of the two steel frames (4) which are vertically arranged forms a closed rectangular frame.
8. The steel platform full framing scaffold assembly architecture of claim 5, wherein: the upright post (30) consists of a bottom plate (300), a top plate (301) and web plates (302), wherein a plurality of web plates (302) are connected and supported between the bottom plate (300) and the top plate (301), the bottom plate (300) is fixed on a structural beam (1) or a structural post (2), and a plurality of connecting rods (31) are connected between the web plates (302) of the two upright posts (30) to connect the two upright posts (30).
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| CN211947993U (en) * | 2020-03-23 | 2020-11-17 | 中国十九冶集团有限公司 | Support for large-span cast-in-situ bridge construction |
| CN114313146A (en) * | 2021-12-13 | 2022-04-12 | 中石化第四建设有限公司 | Assembling method of steel structure beams |
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| JP2002188207A (en) * | 2000-12-18 | 2002-07-05 | Takenaka Komuten Co Ltd | Buildings whose components can be reused |
| CN204401997U (en) * | 2014-11-26 | 2015-06-17 | 华鼎建筑装饰工程有限公司 | A kind of suspension type ceiling construction scaffold |
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| CN110512719A (en) * | 2019-08-15 | 2019-11-29 | 南京建工集团有限公司 | A kind of high residential building large span compartment vestibule high-altitude formwork steel platform construction |
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