CN116696055B - Construction decoration method for cantilever structure of flat roof framework layer - Google Patents

Construction decoration method for cantilever structure of flat roof framework layer

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Publication number
CN116696055B
CN116696055B CN202310714397.XA CN202310714397A CN116696055B CN 116696055 B CN116696055 B CN 116696055B CN 202310714397 A CN202310714397 A CN 202310714397A CN 116696055 B CN116696055 B CN 116696055B
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CN
China
Prior art keywords
steel
reinforced concrete
steel pipe
cantilevered
flat roof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202310714397.XA
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Chinese (zh)
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CN116696055A (en
Inventor
宗徐剑
刘旭强
曾少军
陈新豪
张海波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PowerChina Huadong Engineering Corp Ltd
Zhejiang Huadong Engineering Construction Management Co Ltd
Original Assignee
PowerChina Huadong Engineering Corp Ltd
Zhejiang Huadong Engineering Construction Management Co Ltd
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Application filed by PowerChina Huadong Engineering Corp Ltd, Zhejiang Huadong Engineering Construction Management Co Ltd filed Critical PowerChina Huadong Engineering Corp Ltd
Priority to CN202310714397.XA priority Critical patent/CN116696055B/en
Publication of CN116696055A publication Critical patent/CN116696055A/en
Application granted granted Critical
Publication of CN116696055B publication Critical patent/CN116696055B/en
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Classifications

    • 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
    • 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
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
    • 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
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • 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
    • E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings
    • 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
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

本发明公开了一种平屋面架构层悬挑结构施工装饰方法。本发明采用分阶段的进行施工装饰，施工阶段搭设各工字钢及钢管支架，施工阶段结束后拆除工字钢作为主要构件的支撑装置，搭设小型操作平台进行装饰阶段，有效解决了工字钢租赁费用高，占用时间长等问题，同时降低作业人员在施工区域作业时磕绊摔伤的风险；本发明无需使用大量的大型号工字钢，运输、吊运、安装、拆卸较为简单方便，能缩短一定的施工工期；通过采用较小型号工字钢，加强受力较强区域支撑的方法也能达到同样的受力要求，提高整体的施工效率。

This invention discloses a method for constructing and decorating a cantilevered structure on a flat roof. The invention employs a phased construction and decoration approach. During the construction phase, H-beams and steel pipe supports are erected. After the construction phase, the supporting devices for the main components, the H-beams, are dismantled, and a small operating platform is erected for the decoration phase. This effectively solves the problems of high H-beam rental costs and long downtime, while also reducing the risk of workers tripping and falling during construction. This invention eliminates the need for large quantities of large H-beams, making transportation, hoisting, installation, and dismantling simpler and more convenient, thus shortening the construction period. Furthermore, by using smaller H-beams and reinforcing the support in areas with higher stress, the same stress requirements can be achieved, improving overall construction efficiency.

Description

Construction decoration method for cantilever structure of flat roof framework layer
Technical Field
The invention relates to the technical field of construction decoration of a flat roof overhanging structure in house building engineering, in particular to a construction decoration method of a flat roof framework layer overhanging structure.
Background
The construction decoration of the overhanging structure of the flat roof framework layer adopts an I-steel supporting method, namely a plurality of I-steels are placed on a roof, part of the overhanging structure is overhanging, a protective railing is firstly erected at the overhanging end, then an overhanging operation platform is erected at the overhanging part, a steel pipe support is erected above the overhanging operation platform by taking the I-steels as a bottom support according to the reinforced concrete structure position of the roof framework layer, a template is installed, steel bars are bound, a concrete structure of the roof framework layer is poured, the steel pipe support and the template are removed when the concrete reaches the design strength, and then an operation platform is erected below the concrete structure of the framework layer by using a double-row scaffold, so that the platform and the overhanging platform are used together to finish the decoration work of the roof framework layer. In addition, before the method is adopted, a plurality of long diagonal rods, a plurality of transverse horizontal rods, a plurality of longitudinal horizontal rods, a plurality of dense mesh nets, a plurality of safety nets and ropes are selected from the outer side of the scaffold at the lower layer of the roof layer to form a net curtain for protection, and the area of a protection area exceeds the area of the area covered by the outer side of the I-steel.
The I-steel support method has the following defects:
(1) The steel pipe support and the bottom support of the overhanging platform are constructed by taking the steel pipe support as a framework layer concrete structure, so that the I-steel type adopted on site is large in size, heavy in weight and long in length, and the corresponding transportation, lifting and installation difficulties are increased;
(2) I-steel is buried when the roof framework layer is constructed, the I-steel can be removed until the aluminum veneer decoration on the framework layer is completed, the occupied time is long, the renting cost is high, and a lot of cost is increased;
(3) The requirement of overhanging support is met, the laying interval of I-steel is compact, a large-area roof field is occupied, the development of other procedures is not facilitated, and the risk of stumbling and falling injury of operators exists.
Disclosure of Invention
In order to solve the problems, the invention provides a construction and decoration method for the overhanging structure of the flat roof framework layer, which is suitable for being used in building projects with overhanging structures on the flat roof framework layer and solves the problems of high construction and decoration cost and great difficulty in material transportation, lifting and installation of the roof framework layer.
The invention provides a construction and decoration method of a cantilever structure of a flat roof framework layer, which comprises the following steps:
Lifting double-row scaffolds on the outer side of a house structure, enabling the outer row of the double-row scaffolds on the outer side of the house structure to be higher than a reinforced concrete bottom plate of a flat roof framework layer, providing protection for construction of the reinforced concrete bottom plate, positioning a reinforced pull ring and a wall connecting piece steel tube on a pre-buried plate on the periphery of the plate surface, pre-burying the reinforced pull ring in a column at the bottom of a reinforced concrete column of a male angle steel bar, and welding steel plate pre-buried pieces required by a cantilever framework of a steel structure for decoration on all reinforced concrete columns of the flat roof framework layer;
Secondly, pouring a reinforced concrete bottom plate of a flat roof framework layer, and then building a protection device on a double-row scaffold outside the building structure, wherein the protection device comprises an overhanging scaffold, a wall connecting piece steel pipe pre-buried in the first step, a plurality of first longitudinal horizontal rods, a plurality of horizontal pull rods, a plurality of diagonal rods, a plurality of catches, a plurality of safety nets and a plurality of dense meshes, and the overhanging scaffold consists of a plurality of transverse horizontal rods, a plurality of second longitudinal horizontal rods, a plurality of vertical rods, a plurality of diagonal rods, a plurality of short diagonal rods, a plurality of catches, a plurality of foot blocking plates and a plurality of steel mesh sheets;
The horizontal pull rod is positioned below the overhanging scaffold, one end of the horizontal pull rod is connected with the double-row scaffold outside the house structure through a lock catch, the other end of the horizontal pull rod is outwards overhanging and connected with the first longitudinal horizontal rod outside the house structure through a lock catch, one end of the diagonal pull rod is connected with the first longitudinal horizontal rod outside the house structure through a lock catch, the other end of the diagonal pull rod is fixedly connected with the double-row scaffold outside the house structure below the horizontal pull rod through a lock catch, steel pipe grids are formed by sequentially and alternately erecting, and the dense mesh net and the safety net are sequentially bound on the adjacent diagonal pull rods through a tether, wherein the dense mesh net is arranged inside, and the safety net is arranged outside;
Splicing an overhanging operation platform above the protection device, connecting an outer row of double-row scaffolds on the outer side of the building structure with an inner row of scaffolds on the overhanging scaffold through a transverse horizontal rod, a second longitudinal horizontal rod and a lock catch to form the overhanging operation platform, protecting the overhanging operation platform by the outer row of scaffolds on the overhanging scaffold, and correspondingly placing various I-steels according to the pre-embedded position of a steel bar pull ring in the step, wherein the various I-steels comprise a plurality of I-steels in columns, a plurality of I-steels in standard sections, a plurality of I-steels in reinforced sections and a plurality of connecting Liang Gongzi steels;
the male angle steel reinforced concrete column is square, I-steel in the column is inserted along the diagonal direction of the male angle steel reinforced concrete column, one end of the I-steel is fixed with a pre-embedded steel bar pull ring in the column, the other end of the I-steel is overhanging, a first diagonal bracing is arranged below the overhanging section, one end of the first diagonal bracing is fixed with the bottom of the overhanging section, and the other end of the first diagonal bracing is welded and fixed with a first embedded part in the lower Fang Yang angle steel reinforced concrete column;
Arranging a reinforcing section I-steel at a certain angle with the side line of the reinforced concrete bottom plate at the position of the reinforced concrete bottom plate close to the male angle steel reinforced concrete column, wherein one end of the reinforcing section I-steel is fixed with an on-board steel bar pull ring pre-buried on the reinforced concrete bottom plate, the other end of the reinforcing section I-steel is overhanging, a second diagonal bracing is arranged below the overhanging section, one end of the second diagonal bracing is fixed with the reinforcing section I-steel, and the other end of the second diagonal bracing is welded and fixed with a second embedded part on the lower reinforced concrete bottom plate;
The connecting Liang Gongzi steel is welded on the upper parts of overhanging sections of the I-steel in the column and the I-steel in the reinforcing section;
The standard section I-steel is perpendicular to the side line of the reinforced concrete bottom plate, one end of the standard section I-steel is fixed with an on-board steel bar pull ring pre-buried on the reinforced concrete bottom plate, the other end of the standard section I-steel is overhanging, the standard section I-steel is spread along the edge of the reinforced concrete bottom plate in a straight shape, and the connection Liang Gongzi steel is spread in an orthogonal manner with the standard section I-steel;
Step four, constructing a steel pipe support above each I-steel, wherein the steel pipe support comprises a plurality of steel pipe vertical rods, a plurality of steel pipe transverse horizontal rods, a plurality of steel pipe longitudinal horizontal rods, a plurality of locks and a plurality of scissor supports, the tops of the I-steel are provided with steel bar bulges, the bottoms of the steel pipe vertical rods are erected on the I-steel through the steel bar bulges, the steel pipe transverse horizontal rods and the steel pipe longitudinal horizontal rods are connected with the steel pipe vertical rods through the locks, the upper parts of the steel pipe support are provided with U-shaped jacking, the upper parts of the U-shaped jacking are supported with templates, the scissor supports are arranged on the vertical surfaces of the steel pipe support, the scissor supports are arranged at intervals of four rows and no more than 5000mm along the longitudinal direction of the steel pipe support, and each I-steel and the steel pipe support jointly form a concrete wall, a column and a cantilever structure pouring support platform of a flat roof framework layer in a construction stage;
Step five, a template of the flat roof framework layer is installed by utilizing a steel pipe support, and a concrete member of the flat roof framework layer is poured;
Step six, dismantling each I-steel, a steel pipe support above the I-steel and a concrete structure template when the concrete of the framework layer of the roof to be flattened reaches the design strength, and erecting an operation platform used in the decoration stage by utilizing a double-row scaffold on the outer side of the house structure, wherein the operation platform is formed by connecting a plurality of transverse horizontal rods, a plurality of longitudinal horizontal rods, a plurality of vertical rods and a plurality of fasteners;
Welding aluminum veneer decorative steel structure frameworks on the steel plate embedded parts in the reinforced concrete columns in the step one, and installing aluminum veneers on an operation platform after the steel structure frameworks are welded, so as to finish the decoration work of the overhanging structure of the roof framework layer.
Further, be equipped with vertical main muscle and horizontal stirrup in the angle steel reinforced concrete column, vertical main muscle runs through the cylinder, and horizontal stirrup is located reinforced concrete bottom plate top, and the I-steel is fixed through 3 in the post reinforcing bar pull rings, and the reinforcing bar pull rings adopts several style of calligraphy reinforcing bar pull rings in the post, is makeed by phi 16 round steel, buries into angle steel reinforced concrete column in length not less than 500mm, and the vertical welded length of reinforcing bar pull rings and vertical main muscle in 3 posts is not less than 160mm.
Further, the I-steel in the column adopts 16a I-steel, the length of the overhanging section is 2133mm, and the anchoring length in the column is 697mm.
Further, the first diagonal bracing is made of 16a I-steel, the horizontal distance between the first diagonal bracing and the upper and lower fixing points of the first embedded part is 1000mm, and the vertical distance is greater than 1000mm.
Further, the reinforcing section I-steel and the standard section I-steel are fixed on the reinforced concrete bottom plate by adopting 2 steel bar pull rings on the plate, the steel bar pull rings on the plate are in a shape of a Chinese character 'ji', the height is 320mm, the steel bar pull rings on the plate are embedded to the steel bar position of the reinforced concrete bottom plate, the two ends of the bottom extend into the anchoring length of the bottom plate to be 300mm, the steel bar pull rings on the outermost plate are firmly welded with the steel bar of the reinforced concrete bottom plate, the steel bar pull rings on the innermost plate are arranged at the position 100mm away from the outer wall surface, and the steel bar pull rings on the innermost plate are arranged at the position close to the inner overhanging end of 200 mm.
Further, spaces formed by the upper wing plate surfaces of the standard section I-steel and the reinforcing section I-steel and the steel bar pull rings on the plates are filled by square lumber.
Further, the standard section I-steel adopts 16a I-steel, the anchoring length on the reinforced concrete bottom plate is 2300mm, the external anchoring length of the reinforced concrete bottom plate is 1600mm, and the reinforced concrete bottom plate is distributed at 1500mm intervals.
Further, the I-steel of the reinforcing section adopts 16a I-steel, the anchoring length in the building is 2300mm, the anchoring length outside the building is 1600mm, the second diagonal bracing adopts 16a I-steel, and the second embedded part fixed with the second diagonal bracing adopts a steel pipe.
The U-shaped jacking comprises a screw, an adjustable nut and a U-shaped jacking disc, wherein the diameter of the screw is smaller than the inner diameter of a vertical rod of a steel pipe and can be inserted into the steel pipe, the inner diameter of the adjustable nut is matched with the outer diameter of the screw and can be sleeved into the screw, the screw can be inserted into the steel pipe by rotating the nut, the lower part of the U-shaped jacking disc is welded with the upper end part of the screw, a welded junction is full, the U-shaped opening is upwards contacted with a concrete structure template, and a space formed by the U-shaped opening and the concrete structure template is filled with square timber.
The beneficial effects of the invention are as follows:
1. By constructing and decorating in stages, the I-steel and the steel pipe support are erected in the construction stage, the I-steel is dismantled after the construction stage is finished to serve as a supporting device of a main component, and then a small-sized operation platform is erected to carry out the decoration stage, so that the turnover rate of materials is improved, the lease cost of the I-steel is effectively reduced, and the problems that the occupied time of the I-steel is long, the occupied area of the site is large and other procedures are influenced are solved.
2. The overhanging operation platform and the overhanging screen at the lower part thereof strengthen the safety protection, in the conventional I-steel supporting method, the lower part of the I-steel is only protected by one layer of screen, and potential safety hazards exist at the gap between the I-steels.
3. The construction requirement of the cantilever structure of the flat roof framework layer can be realized by adopting small-size short I-steel and strengthening the support of local I-steel stress concentration areas such as the external corners of the roof, the operation is more convenient, the construction efficiency can be effectively improved, and the input of resources is reduced.
4. The I-steel is small in model, short in length and small in occupied area of the site, and can be removed in time after the construction stage, so that the risk of stumbling and falling injury of operators in the operation of a roof construction area can be reduced, and the safety of the operators is further guaranteed.
The invention adopts staged construction decoration, can remove the I-steel as the supporting device of the main component after the construction stage is finished, effectively solves the problems of high I-steel leasing cost, long occupied time and the like, reduces the risk of stumbling and falling injury of operators in construction area operation, does not need to use a large amount of large-scale I-steel, has simple and convenient transportation, lifting, installation and disassembly, can shorten a certain construction period, and can carry out construction decoration of a framework overhanging structure on a flat roof of a house building.
Drawings
FIG. 1 is a cross-sectional view of the present invention showing the embedment of I-steel in a column of male angle steel reinforced concrete.
Fig. 2 is a cross-sectional view of a figure-shaped reinforcing bar pull ring of the invention pre-buried in a male angle steel bar concrete column.
Fig. 3 is a top view of the present invention with the i-steel pre-embedded in the male angle steel reinforced concrete column.
Fig. 4 is a front view showing the fixing of the several-shaped reinforcing steel bar pull ring to the reinforced concrete floor.
Fig. 5 is a top view of each of the i-beam constructions of the present invention.
FIG. 6 is a schematic cross-sectional view of the I-beam overhanging operation platform in the column of the invention.
Fig. 7 is a schematic cross-sectional view of the standard section i-steel overhanging operation platform of the invention.
Fig. 8 is a schematic cross-sectional view of the cantilever operation platform of the i-steel reinforcement section of the present invention.
Fig. 9 is a schematic overall cross-sectional view of a double-row scaffold outside the building structure of the present invention.
Fig. 10 is a schematic cross-sectional view showing the connection between the double-row scaffold and the overhanging scaffold on the outer side of the house structure.
FIG. 11 is a schematic overall cross-sectional view of the construction stage of the present invention.
FIG. 12 is a schematic overall cross-sectional view of the present invention at a decoration stage.
In the figure, a double-row scaffold 1 at the outer side of a house structure, a transverse horizontal rod 101, a longitudinal horizontal rod 102, a vertical rod 103 and a lock catch 104;
The reinforced concrete bottom plate 2 of the flat roof framework layer is provided with a reinforced pull ring 201 and a wall connecting steel pipe 202;
The external angle steel reinforced concrete column 3 comprises a column internal steel reinforced pull ring 301, a vertical main reinforcement 302 and a horizontal stirrup 303;
The cantilever scaffold 401, a transverse horizontal rod 4011, a second longitudinal horizontal rod 4012, a vertical rod 4013, an inclined strut 4014, a short inclined rod 4015, a lock catch 4016, a foot baffle 4017 and a steel net sheet 4018;
A first longitudinal horizontal rod 402, a horizontal pull rod 403, a diagonal pull rod 404, a lock catch 405, a safety net 406 and a dense mesh net 407;
An overhanging operation platform 5;
the column I-steel 601, the standard section I-steel 602, the reinforced section I-steel 603, the connecting Liang Gongzi steel 604, the first diagonal bracing 605, the first embedded part 606, the second diagonal bracing 607 and the second embedded part 608;
A steel pipe bracket 7, a steel pipe vertical rod 701, a transverse horizontal rod 702, a longitudinal horizontal rod 703, a scissor stay 705, a U-shaped jacking 706, a template 707 and square lumber 609/708;
the operation platform 8, a transverse horizontal rod 801, a longitudinal horizontal rod 802, a vertical rod 803 and a fastener 804.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings, but the scope of the claimed invention is not limited to the above.
As shown in fig. 1-12, a construction and decoration method for a cantilever structure of a flat roof framework layer comprises the following steps:
Step one, lifting a double-row scaffold 1 on the outer side of a house structure, enabling the outer row of the double-row scaffold 1 to be higher than a reinforced concrete bottom plate 2 of a flat roof framework layer, providing protection for construction of the reinforced concrete bottom plate 2, positioning a reinforced pull ring 201 and a wall connecting piece steel tube 202 on a pre-buried plate on the periphery of a plate surface, pre-burying a reinforced pull ring 301 in a column at the bottom of a reinforced concrete column 3 of a male angle steel column, and welding steel plate pre-buried pieces required by a cantilever framework of a decorative steel structure on all reinforced concrete columns of the flat roof framework layer;
Secondly, pouring a reinforced concrete bottom plate 2 of a flat roof framework layer, and then building a protection device on a double-row scaffold 1 outside a house structure, wherein the protection device comprises an overhanging scaffold 401, a wall connecting piece steel pipe 202 pre-buried in the first step, a plurality of first longitudinal horizontal rods 402, a plurality of horizontal pull rods 403, a plurality of diagonal rods 404, a plurality of catches 405, a plurality of safety nets 406 and a plurality of dense meshes 407, the overhanging scaffold 401 is composed of a plurality of transverse horizontal rods 4011, a plurality of second longitudinal horizontal rods 4012, a plurality of vertical rods 4013, a plurality of diagonal rods 4014, a plurality of short diagonal rods 4015, a plurality of catches 4016, a plurality of foot blocking plates 4017 and a plurality of steel meshes 4018, one end of the transverse horizontal rods 4011 close to the flat roof framework layer concrete bottom plate 2 is fixedly connected with the wall connecting piece steel pipe 202 through the catches 4016, the other end of the cantilever rods 403 extends along the vertical rods and is fixedly connected with the vertical rods through the catches, the other end of the diagonal rods as a foundation of the overhanging scaffold, one end of the diagonal rods 4014 is connected with the second longitudinal horizontal rods 4012 arranged on the transverse horizontal rods through the catches 4012, the other end of the diagonal rods 4012 is connected with the horizontal rods 4012 through the horizontal rods 4015, and the outer side of the horizontal rods 4013 is further arranged on the flat roof framework layer, and the outer side of the horizontal rods 4013 is further connected with the horizontal rods 4013 through the horizontal rods 4016, and the horizontal rods 4017 are further arranged on the horizontal rods 4013 and the lower side of the horizontal rods 4013 are arranged on the horizontal rods are connected with the horizontal rods 3 and the horizontal rods 4013;
The horizontal pull rod 403 is positioned below the overhanging scaffold 401, one end of the horizontal pull rod is connected with the double-row scaffold outside the house structure through a lock catch 405, the other end of the horizontal pull rod is outwards overhanging and connected with the first longitudinal horizontal rod 402 outside through the lock catch 405, one end of the diagonal pull rod 404 is connected with the first longitudinal horizontal rod 402 outside through the lock catch 405, the other end of the diagonal pull rod is fixedly connected with the double-row scaffold outside the house structure below the horizontal pull rod 403 through the lock catch, steel tube grids are formed by sequentially erecting at intervals, the dense mesh 407 and the safety mesh 406 are sequentially bound on the adjacent diagonal pull rods 404 through ropes, the dense mesh 407 is arranged inside, and the safety mesh 406 is arranged outside;
Step three, splicing an overhanging operation platform 5 above a protection device, connecting the outer row of double-row scaffolds 1 outside a house structure with the inner row scaffolds of the overhanging scaffolds 401 through a transverse horizontal rod 4011, a second longitudinal horizontal rod 4012 and a lock catch 4016 to form the overhanging operation platform 5, protecting the overhanging operation platform 5 by the outer row scaffolds of the overhanging scaffolds 401, and correspondingly placing various I-steels according to the embedded position of a step one steel bar pull ring, wherein the various I-steels comprise I-steels 601 in columns, standard section I-steels 602, reinforcing section I-steels 603 and connecting Liang Gongzi steels 604;
The male angle steel reinforced concrete column 3 is square, the I-steel 601 in the column is inserted along the opposite angle of the male angle steel reinforced concrete column 3, one end of the I-steel 601 is fixed with the pre-embedded steel reinforced pull ring 301 in the column, the other end of the I-steel is overhanging, a first diagonal bracing 605 is arranged below the overhanging section, one end of the first diagonal bracing 605 is fixed with the bottom of the overhanging section, and the other end of the first diagonal bracing 605 is welded and fixed with a first embedded part 606 in the lower Fang Yang angle steel reinforced concrete column 3;
A reinforcing section I-steel 603 is arranged at a position of the reinforced concrete bottom plate 2, which is close to the male angle steel reinforced concrete column 3, and forms a certain angle with the side line of the reinforced concrete bottom plate 2, one end of the reinforcing section I-steel 603 is fixed with an on-board steel bar pull ring 201 pre-buried on the reinforced concrete bottom plate 2, the other end of the reinforcing section I-steel 603 is overhanging, a second diagonal bracing 607 is arranged below the overhanging section, one end of the second diagonal bracing 607 is fixed with the reinforcing section I-steel 603, and the other end of the second diagonal bracing 607 is welded and fixed with a second embedded part 608 on the lower reinforced concrete bottom plate;
The connecting beam I-steel 604 is welded at the upper parts of overhanging sections of the I-steel 601 in the column and the I-steel 603 in the reinforcing section;
The standard section I-steel 602 is perpendicular to the side line of the reinforced concrete bottom plate 2, one end of the standard section I-steel 602 is fixed with an on-board reinforced steel pull ring 201 pre-buried on the reinforced concrete bottom plate 2, the other end of the standard section I-steel 602 is overhanging, the standard section I-steel 602 is spread along the edge of the reinforced concrete bottom plate 2 in a straight shape, and the connection Liang Gongzi steel 604 is spread in an orthogonal manner with the standard section I-steel 602;
Step four, constructing a steel pipe support 7 above each I-shaped steel, wherein the steel pipe support 7 comprises a plurality of steel pipe vertical rods 701, a plurality of steel pipe transverse horizontal rods 702, a plurality of steel pipe longitudinal horizontal rods 703, a plurality of lock catches 704 and a plurality of scissor supports 705, the tops of the I-shaped steel are provided with steel bar bulges, the bottoms of the steel pipe vertical rods 701 are erected on the I-shaped steel through the steel bar bulges, the steel pipe transverse horizontal rods 702 and the steel pipe longitudinal horizontal rods 703 are connected with the steel pipe vertical rods 701 through the lock catches 704, a U-shaped jacking 706 is arranged at the upper part of the steel pipe support 7, templates 707 are supported at the upper part of the U-shaped jacking 706, the scissor supports 705 are arranged on the vertical surface of the steel pipe support 7, the scissor supports 705 are arranged at intervals of four rows along the longitudinal direction of the steel pipe support, and are not more than 5000mm, and each I-shaped steel and the steel pipe support jointly form a concrete wall, a column and a cantilever structure pouring support platform of a flat roof framework layer in a construction stage;
Step five, a template of a flat roof framework layer is installed by utilizing a steel pipe support 7, and a reinforced concrete bottom plate concrete member is poured;
Step six, dismantling each I-steel, a steel pipe support and a template above the I-steel when the concrete of the framework layer of the roof to be flattened reaches the design strength, and erecting an operation platform 8 for decoration construction by utilizing the double-row scaffold 1 on the outer side of the house structure, wherein the operation platform 8 is formed by connecting a plurality of transverse horizontal rods 801, a plurality of longitudinal horizontal rods 802, a plurality of vertical rods 803 and a plurality of fasteners 804;
Welding aluminum veneer decorative steel structure frameworks on the steel plate embedded parts in the reinforced concrete columns in the step one, and installing aluminum veneers on an operation platform after the steel structure frameworks are welded, so as to finish the decoration work of the overhanging structure of the roof framework layer.
As an alternative embodiment, the vertical main reinforcement 302 and the transverse stirrup 303 are arranged in the male angle steel reinforced concrete column 3, the vertical main reinforcement 302 penetrates through the column, the transverse stirrup 303 is positioned above the reinforced concrete bottom plate 2 of the flat roof framework layer, the I-shaped steel 601 in the column is fixed through 3 steel bar pull rings in the column, the steel bar pull rings 301 in the column are made of phi 16 round steel, the length in the embedded male angle steel reinforced concrete column 3 is not less than 500mm, and the vertical welding length between the steel bar pull rings 301 in the 3 columns and the vertical main reinforcement 302 is not less than 160mm. When the steel bar is inconvenient to weld with the vertical main bar 302, the anchoring length of the steel bar pull ring 301 in the column below the male steel bar reinforced concrete column 3 is increased, so that the anchoring length is not less than 1500mm, or 2 phi 16 horizontal steel bars are respectively welded at the left and right sides of the bent hook of the steel bar pull ring 301 in the column with the original length, and the anchoring cohesive force and the pulling resistance of the square round steel are increased. When the pouring of the reinforced concrete bottom plate 2 of the flat roof framework layer is completed and the design strength is reached, the in-column reinforced bar pull ring 301 is completely fixed.
As an alternative embodiment, the in-column I-steel 601 is 16a I-steel, the length of the overhanging section is 2133mm, and the anchoring length in the column is 697mm.
As an alternative embodiment, the first diagonal bracing 605 adopts 16a I-steel, the horizontal distance between the first diagonal bracing 605 and the upper and lower fixing points of the I-steel 601 and the first embedded part 606 in the column is 1000mm, and the vertical distance is more than 1000mm.
As an alternative embodiment, the standard section I-steel 602 and the reinforcing section I-steel 603 are both fixed on the reinforced concrete bottom plate 2 by adopting 2 steel bar pull rings 201 on the plate, the steel bar pull rings 201 on the plate are in a shape like a Chinese character 'ji', the height is 320mm, the steel bar pull rings 201 on the plate are pre-buried to the steel bar position of the reinforced concrete bottom plate 2, the anchoring lengths of the two ends of the bottom of the plate extend into the bottom of the plate are 300mm, the steel bars of the steel bar reinforced concrete bottom plate 2 are firmly welded, the steel bar pull ring on the outermost plate is arranged at a position 100mm away from the outer wall surface, and the steel bar pull ring on the innermost plate is arranged at a position near the inner overhanging end by 200 mm.
As an alternative embodiment, the spaces formed by the upper wing plate surfaces of the standard section i-steel 602 and the reinforcing section i-steel 603 and the steel bar pull ring 201 on the plate are filled by square timber 609, and the square timber 609 plays a role in fastening the i-steel.
As an alternative embodiment, the standard section I-steel 602 adopts 16a I-steel, the anchoring length on the reinforced concrete bottom plate 2 is 2300mm, the outer anchoring length of the reinforced concrete bottom plate 2 of the flat roof framework layer is 1600mm, the reinforced concrete bottom plate is distributed at intervals of 1500mm, the lower part is not provided with a support, the upper part is provided with a steel pipe support, and the template is supported in the construction stage to assist in completing the construction of the overhanging structure of the roof framework layer.
As an alternative embodiment, the reinforcing section I-steel 603 adopts 16a I-steel, the anchoring length in the building is 2300mm, the anchoring length outside the building is 1600mm, the reinforcing section I-steel is arranged according to practical conditions, the second diagonal bracing 607 also adopts 16a I-steel, and the second embedded part 608 fixed with the second diagonal bracing 607 can adopt steel pipes.
As an alternative embodiment, the U-shaped jacking 706 comprises a screw, an adjustable nut and a U-shaped jacking disc, wherein the diameter of the screw is smaller than the inner diameter of a steel pipe vertical rod and can be inserted into the steel pipe, the inner diameter of the adjustable nut is matched with the outer diameter of the screw and can be sleeved into the screw, the screw can be inserted into the steel pipe by rotating the nut, the lower part of the U-shaped jacking disc is welded with the upper end part of the screw, a welded joint is full, the U-shaped joint is upwards contacted with a concrete structure template, and a space formed by the U-shaped joint and the concrete structure template is filled with square timber 708.
As an alternative embodiment, the reinforcing section i-steel 603 is arranged at an angle a with the reinforced concrete floor 2 of the flat roof framework layer, wherein 0< a <90 °, and the specific angle is set according to actual needs.
As an alternative embodiment, the double-row scaffold 1 is built on the outside of the building structure and comprises a plurality of transverse horizontal bars 101, a plurality of longitudinal horizontal bars 102, a plurality of vertical bars 103 and a plurality of catches 104.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims (9)

1.一种平屋面架构层悬挑结构施工装饰方法，其特征在于：包括以下步骤：1. A method for constructing and decorating a cantilevered structure on a flat roof, characterized by comprising the following steps: 步骤一、提升房屋结构外侧双排脚手架，使房屋结构外侧双排脚手架外排高于平屋面架构层钢筋混凝土底板，为钢筋混凝土底板施工提供防护，在板面周边定位预埋板上钢筋拉环、连墙件钢管，在阳角钢筋混凝土柱底部预埋柱内钢筋拉环，在平屋面架构层所有钢筋混凝土柱上焊接装饰用钢结构悬挑骨架所需钢板预埋件；Step 1: Raise the double-row scaffolding on the outside of the building structure so that the outer row of the double-row scaffolding is higher than the reinforced concrete base slab of the flat roof frame layer, so as to provide protection for the construction of the reinforced concrete base slab. Position and embed steel reinforcement rings and wall tie steel pipes around the perimeter of the slab. Embed steel reinforcement rings inside the columns at the bottom of the reinforced concrete columns at the external corners. Weld the steel plate embedded parts required for the decorative steel structure cantilever frame on all reinforced concrete columns of the flat roof frame layer. 步骤二、浇筑平屋面架构层钢筋混凝土底板，之后在房屋结构外侧双排脚手架上搭建防护装置，防护装置包括悬挑脚手架、步骤一中预埋的连墙件钢管、多个第一纵向水平杆、多个水平拉杆、多个斜拉杆、多个锁扣、多张安全网和多张密目网，悬挑脚手架由多个横向水平杆、多个第二纵向水平杆、多个立杆、多个斜撑杆、多个短斜杆、多个锁扣、多个挡脚板、多个钢网片组成，靠近平屋面架构层混凝土底板的横向水平杆一端通过锁扣与连墙件钢管连接固定，另一端悬挑延伸，与沿线立杆通过锁扣连接固定，另一端作为悬挑脚手架的基础，斜撑杆一端与搭设在所述横向水平杆上的第二纵向水平杆末端通过锁扣连接，另一端与平屋面架构层下方的房屋结构外侧双排脚手架纵向水平杆通过锁扣连接，提高悬挑脚手架的稳定性；平屋面架构层外上方横向水平杆、第二纵向水平杆与立杆通过锁扣相互搭接固定，形成悬挑脚手架架体；悬挑脚手架内外排脚手架通过短斜杆及锁扣进一步强化结构稳定性；悬挑脚手架平底面铺设有钢网片，内立面下部铺设有挡脚板，外立面绑扎密目网；Step 2: Pour the reinforced concrete base slab of the flat roof structure layer. Then, erect a protective device on the double-row scaffolding outside the building structure. The protective device includes cantilevered scaffolding, wall ties pre-embedded in Step 1, multiple first longitudinal horizontal bars, multiple horizontal tie rods, multiple diagonal tie rods, multiple locks, multiple safety nets, and multiple dense mesh nets. The cantilevered scaffolding consists of multiple transverse horizontal bars, multiple second longitudinal horizontal bars, multiple uprights, multiple diagonal braces, multiple short diagonal braces, multiple locks, multiple toe boards, and multiple steel mesh panels. One end of the transverse horizontal bar closest to the concrete base slab of the flat roof structure layer is connected and fixed to the wall tie steel pipe via a lock, while the other end extends cantilevered, connecting with the uprights along the line. The cantilever scaffold is fixed by locking links, with one end serving as the foundation. One end of the diagonal brace is connected to the end of the second longitudinal horizontal bar erected on the horizontal bar via locking links, and the other end is connected to the longitudinal horizontal bar of the double-row scaffold on the outside of the building structure below the flat roof structure via locking links, thereby improving the stability of the cantilever scaffold. The horizontal horizontal bar, the second longitudinal horizontal bar, and the uprights above the flat roof structure are interlocked and fixed with locking links to form the cantilever scaffold frame. The inner and outer rows of the cantilever scaffold are further reinforced with short diagonal braces and locking links to enhance structural stability. The flat bottom surface of the cantilever scaffold is covered with steel mesh, the lower part of the inner facade is covered with toe boards, and the outer facade is tied with dense mesh netting. 水平拉杆位于悬挑脚手架下方，一端与房屋结构外侧双排脚手架通过锁扣连接，另一端向外悬挑与最外侧第一纵向水平杆通过锁扣连接，斜拉杆一端与最外侧第一纵向水平杆通过锁扣连接，另一端与水平拉杆下方房屋结构外侧双排脚手架外排脚手架通过锁扣连接固定，依次间隔搭设形成钢管网格，通过系绳依次将密目网、安全网绑扎在相邻的斜拉杆上，密目网在内，安全网在外；The horizontal tie rod is located below the cantilevered scaffolding. One end is connected to the double-row scaffolding on the outside of the building structure through a lock, and the other end cantilevered outward and connected to the outermost first longitudinal horizontal bar through a lock. One end of the diagonal tie rod is connected to the outermost first longitudinal horizontal bar through a lock, and the other end is connected and fixed to the outer row of the double-row scaffolding on the outside of the building structure below the horizontal tie rod through a lock. The tie rods are erected in sequence at intervals to form a steel pipe grid. The dense mesh netting and safety netting are tied to the adjacent diagonal tie rods in sequence with ropes, with the dense mesh netting on the inside and the safety netting on the outside. 步骤三、在防护装置上方拼接悬挑操作平台，通过横向水平杆、第二纵向水平杆及锁扣将房屋结构外侧双排脚手架外排与悬挑脚手架内排脚手架连接，形成悬挑操作平台，悬挑脚手架外排脚手架对悬挑操作平台形成防护，将各类工字钢按步骤一钢筋拉环预埋位置相应放置，其中，各类工字钢包括多根柱内工字钢、多根标准段工字钢、多根加强段工字钢和多根连接梁工字钢；Step 3: Assemble the cantilevered operating platform above the protective device. Connect the outer row of the double-row scaffolding on the outside of the building structure with the inner row of the cantilevered scaffolding through horizontal bars, a second longitudinal horizontal bar, and locking buckles to form the cantilevered operating platform. The outer row of the cantilevered scaffolding provides protection for the cantilevered operating platform. Place various types of I-beams according to the pre-embedded positions of the steel bar tie rings in Step 1. Among them, various types of I-beams include multiple column-inserted I-beams, multiple standard section I-beams, multiple reinforced section I-beams, and multiple connecting beam I-beams. 阳角钢筋混凝土柱为方形，柱内工字钢沿阳角钢筋混凝土柱对角插入，一端与柱内预埋的柱内钢筋拉环固定，另一端悬挑，悬挑段下方设置第一斜撑，第一斜撑一端与悬挑段底部固定，另一端与下方阳角钢筋混凝土柱内的第一预埋件焊接固定；The reinforced concrete column at the external corner is square. I-beams are inserted diagonally along the external corner reinforced concrete column. One end is fixed to the pre-embedded steel bar tie ring in the column, and the other end is cantilevered. A first diagonal brace is set below the cantilevered section. One end of the first diagonal brace is fixed to the bottom of the cantilevered section, and the other end is welded to the first pre-embedded part in the external corner reinforced concrete column below. 在钢筋混凝土底板靠近阳角钢筋混凝土柱的位置，与钢筋混凝土底板边线呈一定角度布置加强段工字钢，加强段工字钢一端与钢筋混凝土底板上预埋的板上钢筋拉环固定，另一端悬挑，悬挑段下方设置第二斜撑，第二斜撑一端与加强段工字钢固定，另一端与下层钢筋混凝土底板上的第二预埋件焊接固定；At the location of the reinforced concrete column near the external corner of the reinforced concrete base slab, a reinforcing section I-beam is arranged at a certain angle to the edge of the reinforced concrete base slab. One end of the reinforcing section I-beam is fixed to the pre-embedded reinforcing bar tie ring on the reinforced concrete base slab, and the other end is cantilevered. A second diagonal brace is set below the cantilevered section. One end of the second diagonal brace is fixed to the reinforcing section I-beam, and the other end is welded and fixed to the second pre-embedded part on the lower layer of reinforced concrete base slab. 连接梁工字钢焊接在柱内工字钢和加强段工字钢的悬挑段上部；The connecting beam I-beam is welded to the upper part of the cantilevered section of the internal I-beam and the reinforcing I-beam; 标准段工字钢与钢筋混凝土底板边线垂直，其一端与钢筋混凝土底板上预埋的板上钢筋拉环固定，另一端悬挑，标准段工字钢沿钢筋混凝土底板边缘一字铺开，连接梁工字钢与标准段工字钢正交铺设；The standard section of the I-beam is perpendicular to the edge of the reinforced concrete base slab. One end of the I-beam is fixed to the pre-embedded reinforcing bar ring on the reinforced concrete base slab, and the other end is cantilevered. The standard section of the I-beam is laid out in a straight line along the edge of the reinforced concrete base slab, and the connecting beam I-beam is laid orthogonally to the standard section of the I-beam. 步骤四、在各工字钢上方搭建钢管支架，钢管支架包括多个钢管立杆、多个钢管横向水平杆、多个钢管纵向水平杆、多个锁扣和多个剪刀撑，各工字钢顶部设有钢筋凸起，钢管立杆底部通过钢筋凸起直立在各工字钢上，通过锁扣将钢管横向水平杆、钢管纵向水平杆与钢管立杆连接，钢管支架上部设有U型顶托，U型顶托上部托有模板，剪刀撑设在钢管支架的立面，剪刀撑沿钢管支架纵向每隔四排且不大于5000mm设置，各工字钢、钢管支架共同构成施工阶段平屋面架构层混凝土墙、柱及悬挑结构浇筑支撑平台；Step 4: Construct steel pipe supports above each I-beam. The steel pipe supports include multiple steel pipe uprights, multiple horizontal steel pipe bars, multiple vertical steel pipe bars, multiple locking buckles, and multiple scissor braces. Each I-beam has a reinforcing bar protrusion at the top. The bottom of the steel pipe uprights is supported by the reinforcing bar protrusions on each I-beam. The horizontal and vertical steel pipe bars are connected to the steel pipe uprights by locking buckles. The upper part of the steel pipe supports is equipped with a U-shaped top support, and the template is supported on the top of the U-shaped top support. The scissor braces are set on the vertical surface of the steel pipe supports. The scissor braces are set every four rows along the longitudinal direction of the steel pipe supports and no more than 5000mm. The I-beams and steel pipe supports together constitute the support platform for the pouring of concrete walls, columns, and cantilever structures of the flat roof structure layer during the construction stage. 步骤五、利用钢管支架安装平屋面架构层的模板，浇筑平屋面架构层混凝土构件；Step 5: Install the formwork for the flat roof structure layer using steel pipe supports, and pour the concrete components for the flat roof structure layer. 步骤六、待平屋面架构层混凝土达到设计强度，拆除各工字钢、工字钢上方的钢管支架及混凝土结构模板，再利用房屋结构外侧双排脚手架搭设装饰阶段使用的操作平台，操作平台由多个横向水平杆、多个纵向水平杆、多个立杆、多个扣件连接构成；Step 6: Once the concrete of the roof structure layer reaches the design strength, remove each I-beam, the steel pipe support above the I-beam, and the concrete structure formwork. Then, use the double-row scaffolding on the outside of the building structure to erect the operating platform for the decoration stage. The operating platform consists of multiple horizontal bars, multiple vertical bars, multiple uprights, and multiple fasteners. 步骤七、在步骤一所有钢筋混凝土柱中的钢板预埋件上焊接铝单板装饰钢结构骨架，待钢结构骨架焊接完成，在操作平台上安装铝单板，完成屋面架构层悬挑结构装饰工作。Step 7: Weld aluminum single-panel decorative steel structure frame onto the steel plate embedded parts in all the reinforced concrete columns in Step 1. After the steel structure frame welding is completed, install the aluminum single panels on the operating platform to complete the decoration work of the cantilever structure of the roof frame layer. 2.根据权利要求1所述的一种平屋面架构层悬挑结构施工装饰方法，其特征在于：阳角钢筋混凝土柱中设有竖向主筋和横向箍筋，竖向主筋贯穿柱体，横向箍筋位于钢筋混凝土底板上方，柱内工字钢通过3根柱内钢筋拉环固定，柱内钢筋拉环采用几字型钢筋拉环，由Φ16圆钢制作，埋入阳角钢筋混凝土柱内长度不少于500mm，3根柱内钢筋拉环与竖向主筋竖向焊接长度不小于160mm。2. The construction and decoration method for a cantilever structure of a flat roof according to claim 1, characterized in that: the reinforced concrete column at the external corner is provided with vertical main bars and horizontal stirrups, the vertical main bars penetrate the column body, the horizontal stirrups are located above the reinforced concrete base plate, the I-beams inside the column are fixed by 3 internal column steel bar tie rings, the internal column steel bar tie rings are shaped like a "Z" and made of Φ16 round steel, the length embedded in the reinforced concrete column at the external corner is not less than 500mm, and the vertical welding length between the 3 internal column steel bar tie rings and the vertical main bars is not less than 160mm. 3.根据权利要求1所述的一种平屋面架构层悬挑结构施工装饰方法，其特征在于：柱内工字钢采用16a工字钢，悬挑段长度为2133mm，柱内锚固长度为697mm。3. The construction and decoration method for a cantilever structure of a flat roof frame layer according to claim 1, characterized in that: the I-beams inside the columns are 16a I-beams, the cantilever section length is 2133mm, and the anchorage length inside the columns is 697mm. 4.根据权利要求1所述的一种平屋面架构层悬挑结构施工装饰方法，其特征在于：第一斜撑采用16a工字钢，第一斜撑与第一预埋件上下固定点的水平距离为1000mm，垂直距离大于1000mm。4. The construction and decoration method of a cantilever structure of a flat roof frame layer according to claim 1, characterized in that: the first diagonal brace is made of 16a I-beam, the horizontal distance between the first diagonal brace and the upper and lower fixing points of the first embedded part is 1000mm, and the vertical distance is greater than 1000mm. 5.根据权利要求1所述的一种平屋面架构层悬挑结构施工装饰方法，其特征在于：加强段工字钢和标准段工字钢均采用2根板上钢筋拉环固定在钢筋混凝土底板上，板上钢筋拉环采用几字型钢筋拉环，高度为320mm，板上钢筋拉环预埋至钢筋混凝土底板钢筋位置，底部两端伸入板底锚固长度均为300mm，并与钢筋混凝土底板钢筋焊接牢固，最外侧一道板上钢筋拉环设置在离外墙面100mm处，最内侧一道板上钢筋拉环设置在靠近内侧悬挑端200mm处。5. A construction and decoration method for a cantilevered structure of a flat roof frame as described in claim 1, characterized in that: both the reinforcing section I-beam and the standard section I-beam are fixed to the reinforced concrete base slab with two steel bar tie rings on the slab. The steel bar tie rings on the slab are U-shaped steel bar tie rings with a height of 320mm. The steel bar tie rings on the slab are pre-embedded to the position of the steel bar in the reinforced concrete base slab. The bottom ends of the tie rings extend into the bottom of the slab for an anchorage length of 300mm and are firmly welded to the steel bar in the reinforced concrete base slab. The outermost steel bar tie ring is set 100mm away from the outer wall surface, and the innermost steel bar tie ring is set 200mm away from the inner cantilever end. 6.根据权利要求1所述的一种平屋面架构层悬挑结构施工装饰方法，其特征在于：标准段工字钢和加强段工字钢上翼板板面与板上钢筋拉环形成空间通过方木填充。6. A construction and decoration method for a cantilevered structure of a flat roof according to claim 1, characterized in that: the space formed between the upper flange of the standard section I-beam and the reinforcing section I-beam and the reinforcing bar tie ring on the flange is filled with square timber. 7.根据权利要求1所述的一种平屋面架构层悬挑结构施工装饰方法，其特征在于：标准段工字钢采用16a工字钢，钢筋混凝土底板上锚固长度为2300mm，钢筋混凝土底板外锚固长度为1600mm，按1500mm间距布设。7. The construction and decoration method for a cantilever structure of a flat roof frame layer according to claim 1, characterized in that: the standard section of the I-beam adopts 16a I-beam, the anchorage length on the reinforced concrete base plate is 2300mm, the external anchorage length on the reinforced concrete base plate is 1600mm, and they are arranged at 1500mm intervals. 8.根据权利要求1所述的一种平屋面架构层悬挑结构施工装饰方法，其特征在于：加强段工字钢采用16a工字钢，在建筑物内锚固长度为2300mm，建筑物外锚固长度为1600mm，第二斜撑采用16a工字钢，与第二斜撑固定的第二预埋件采用钢管。8. The construction and decoration method of a cantilever structure of a flat roof frame layer according to claim 1, characterized in that: the reinforcing section I-beam is a 16a I-beam, the anchorage length inside the building is 2300mm, the anchorage length outside the building is 1600mm, the second diagonal brace is a 16a I-beam, and the second embedded part fixed to the second diagonal brace is a steel pipe. 9.根据权利要求1所述的一种平屋面架构层悬挑结构施工装饰方法，其特征在于：U型顶托包括螺杆、可调螺母、U型顶盘，螺杆直径小于钢管立杆内径而能插入钢管，可调螺母内径与螺杆外径匹配而能套入螺杆，通过转动螺母可调节螺杆插入钢管内长度；U型顶盘下部与螺杆上端部焊接，焊口饱满，U型口朝上接触混凝土结构模板，U型口与混凝土结构模板形成空间用方木填充。9. A construction and decoration method for a cantilevered structure of a flat roof according to claim 1, characterized in that: the U-shaped top support includes a screw rod, an adjustable nut, and a U-shaped top plate; the diameter of the screw rod is smaller than the inner diameter of the steel pipe upright so that it can be inserted into the steel pipe; the inner diameter of the adjustable nut matches the outer diameter of the screw rod so that it can be fitted onto the screw rod; the length of the screw rod inserted into the steel pipe can be adjusted by rotating the nut; the lower part of the U-shaped top plate is welded to the upper end of the screw rod, the weld joint is full, the U-shaped opening faces upward and contacts the concrete structure template, and the space formed by the U-shaped opening and the concrete structure template is filled with square timber.
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