CN115354798B - Variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel and construction method - Google Patents
Variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel and construction method Download PDFInfo
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- CN115354798B CN115354798B CN202210986484.6A CN202210986484A CN115354798B CN 115354798 B CN115354798 B CN 115354798B CN 202210986484 A CN202210986484 A CN 202210986484A CN 115354798 B CN115354798 B CN 115354798B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 215
- 239000010959 steel Substances 0.000 title claims abstract description 215
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 239000004567 concrete Substances 0.000 claims abstract description 24
- 239000000126 substance Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 9
- 239000011150 reinforced concrete Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
- E04C2003/0421—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section comprising one single unitary part
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0452—H- or I-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/046—L- or T-shaped
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel and a construction method thereof, and relates to the technical field of steel and concrete combined structures. The H-shaped steel beam comprises an H-shaped steel beam upper flange, an H-shaped steel beam web plate and an H-shaped steel beam lower flange; the upper flange of the H-shaped steel beam is horizontal, and grooves are cut on two end faces of the short axial direction; the middle part of the lower flange of the H-shaped steel beam is horizontally bent downwards, the two ends of the lower flange of the H-shaped steel beam are bent downwards in the short axial direction, and the end faces are cut into grooves. The invention solves the problems that the traditional special-shaped template is difficult to process, the site operation space is extremely limited, and the construction risk is caused.
Description
Technical Field
The invention relates to the technical field of steel and concrete combined structures, in particular to a variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel and a construction method.
Background
Along with the development of the times, the requirements of people on the appearance and the functions of the building are increasingly improved, and the modern building has two basic characteristics of attractive appearance and reasonable structure. In public buildings such as shops and theatres, a plurality of long and narrow corner hollows can be generated in the buildings due to the unique modeling and large area. Because public building functional requirements can be changed along with business planning, in order to improve building utilization, floors need to be increased through improvement to such hollow-out. Such elongated variable cross-section cantilever panels often appear at building deformation joints, jump-bed locations. If the traditional reinforced concrete structure is adopted for design, the height-to-width ratio of the frame body is extremely large because of long and narrow space and higher common building layer height. The traditional template support frame has serious insufficient anti-overturning performance, and the template support frame cannot be supported in a traditional mode. And the traditional special-shaped template is difficult to process, the field operation space is extremely limited, and the construction risk is extremely high.
Disclosure of Invention
The invention aims to provide a variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel and a construction method, and solves the problems that a traditional special-shaped formwork is difficult to process, the field operation space is extremely limited, and construction risks are caused.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the variable cross-section floor slab supporting structure comprises a pair of concrete structural columns, H-shaped steel beams connected between the vertical faces of the pair of concrete structural columns, T-shaped steel cantilever beams welded on two sides of the H-shaped steel beams at intervals along the long axis, angle steel welded between the outer edges of adjacent T-shaped steel cantilever beams and a steel bar truss floor supporting plate connected to the H-shaped steel beams and the T-shaped steel cantilever beams.
The H-shaped steel beam comprises an H-shaped steel beam upper flange, an H-shaped steel beam web plate and an H-shaped steel beam lower flange; the upper flange of the H-shaped steel beam is horizontal, and grooves are cut on two end faces of the short axial direction; the middle part of the lower flange of the H-shaped steel beam is horizontally bent downwards, the two ends of the lower flange of the H-shaped steel beam are bent downwards in the short axial direction, and the end faces are cut into grooves.
Further preferred technical scheme: the T-shaped steel cantilever beam comprises a T-shaped steel cantilever beam flange, a T-shaped steel cantilever beam web and a T-shaped steel cantilever beam end plate.
Further preferred technical scheme: the length of the T-shaped steel cantilever beam web is greater than that of the T-shaped steel cantilever beam flange, and the part of the T-shaped steel cantilever beam web exceeding the length of the T-shaped steel cantilever beam flange is used as a stiffening plate of the H-shaped steel beam.
Further preferred technical scheme: the H-shaped steel beam is welded with the web plate of the T-shaped steel cantilever beam, and the whole weld joint is C-shaped.
Further preferred technical scheme: the top surface of the inner side of the T-shaped steel cantilever beam flange is provided with a notch, and the notch of the T-shaped steel cantilever beam flange is fit and clamped on the upper flange of the H-shaped steel beam.
Further preferred technical scheme: the flange of the T-shaped steel cantilever beam is aligned with the top of the upper flange of the H-shaped steel beam.
Further preferred technical scheme: and the T-shaped steel cantilever beam end plates of the T-shaped steel cantilever beams with different spans are tied through angle steel.
Further preferred technical scheme: the steel bar truss floor support plate is fixed on the H-shaped steel beam and the T-shaped steel cantilever beam through bolts.
Further preferred technical scheme: the vertical face of the concrete structure column is connected with a rear buried plate through a chemical anchor bolt, a pair of L-shaped adapter plates are welded on the rear buried plate, one support plate of the L-shaped adapter plates is welded with the rear buried plate, and the other support plate is connected with an H-shaped steel beam web through a high-strength bolt.
The construction method of the variable cross-section floor slab supporting structure combining the H-shaped steel and the T-shaped steel comprises the following steps:
and firstly, mounting the rear buried plates on the vertical faces of a pair of concrete structural columns through chemical anchor bolts, and then welding the adapter plates arranged in pairs on the rear buried plates.
And step two, connecting two end surfaces of the H-shaped steel beam on the adapter plate through high-strength bolts, and completing the installation of the H-shaped steel beam after the adapter plate is connected with the H-shaped steel beam.
And thirdly, welding T-shaped steel overhanging beams with different lengths on two sides of the H-shaped steel beam at intervals according to the section size of the region to be supported.
And fourthly, the T-shaped steel cantilever beams with different spans are tied through the T-shaped steel cantilever beam end plates and the angle steel.
And fifthly, fixing the steel bar truss floor support plate on the H-shaped steel beam and the T-shaped steel cantilever beam through bolts, and performing concrete pouring after the steel bar truss floor support plate is fixed, so that construction is completed.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
1, compared with the conventional reinforced concrete structure, the invention has the advantages of saving the erection and the dismantling of the template support frame, simplifying the process flow and saving the materials; meanwhile, compared with the traditional reinforced concrete structure, the steel and concrete combined structure has lighter dead weight, the stress performance of the overhanging part is more reasonable, and the safety of the structure is enhanced.
2, the invention omits the working procedure of supporting the template by replacing the reinforced concrete structure by the steel and concrete combined structure, thereby reducing the template loss, shortening the construction period and reducing the safety risk in the operation process.
Drawings
FIG. 1 is a plan view of a variable cross section floor support structure of the H-section steel and T-section steel combination of the invention;
FIG. 2 is an H-beam of the present invention;
FIG. 3 is a T-beam cantilever of the present invention;
FIG. 4 is a transverse cross-sectional view of a variable section floor support structure of the H-section steel and T-section steel combination of the invention;
FIG. 5 is a graph of the joints between H-beam and concrete structure columns of the present invention;
FIG. 6 is a graph of the connecting nodes of the end plate and the angle steel of the T-shaped steel cantilever beam of the invention;
reference numerals: 1-concrete structural column, 2-H-shaped steel beam, 3-T-shaped steel cantilever beam, 4-angle steel, 5-steel bar truss floor supporting plate, 6-rear embedded plate, 7-chemical anchor bolt, 8-adapter plate, 9-high-strength bolt, 10-stud,
the upper flange of the 21-H-shaped steel beam, the web of the 22-H-shaped steel beam, the lower flange of the 23-H-shaped steel beam,
31-T-shaped steel cantilever beam top flange, 32-T-shaped steel cantilever beam web, 33-T-shaped steel cantilever beam end plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention relates to a variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel and a construction method thereof.
In the embodiment, the beam slab with the long and narrow variable cross-section overhanging structure is used as a construction case, and the application of the invention improves a reinforced concrete system into a steel and concrete combined structure system to finish the construction of the long and narrow variable cross-section floor slab supporting structure.
As shown in fig. 1 to 6, the variable cross-section floor supporting structure of the H-section steel and T-section steel combination of the present invention comprises a pair of concrete structural columns 1, H-section steel beams 2 connected between the vertical faces of the pair of concrete structural columns 1, T-section steel cantilever beams 3 welded at both sides of the H-section steel beams 2 at intervals along the long axis, angle steel 4 welded between the outer edges of the adjacent T-section steel cantilever beams 3, and a steel bar truss floor carrier plate 5 connected to the H-section steel beams 2 and the T-section steel cantilever beams 3.
The vertical face of the concrete structure column 1 is connected with a rear buried plate 6 through a chemical anchor bolt 7, a pair of L-shaped adapter plates 8 are welded on the rear buried plate 6, one support plate of the L-shaped adapter plates 8 is welded with the rear buried plate 6, and the other support plate is connected with an H-shaped steel beam web 22 through a high-strength bolt 9.
As shown in fig. 2, the H-beam 2 includes an H-beam upper flange 21, an H-beam web 22, and an H-beam lower flange 23; the upper flange 21 of the H-shaped steel beam is horizontal, and grooves are cut on two end faces in the short axial direction; the middle part of the lower flange 23 of the H-shaped steel beam is horizontally bent downwards, the two ends of the lower axial direction are downwards bent, and the end faces are cut into grooves.
As shown in fig. 3, the T-section cantilever beam 3 includes a T-section cantilever beam flange 31, a T-section cantilever beam web 32, and a T-section cantilever beam end plate 33; the length of the T-shaped steel cantilever beam web 32 is greater than that of the T-shaped steel cantilever beam flange 31, and the part of the T-shaped steel cantilever beam web 32 exceeding the length of the T-shaped steel cantilever beam flange 31 can be used as a stiffening plate of the H-shaped steel beam 2.
As shown in fig. 4, the connection nodes of the H-shaped steel beam 2 and the T-shaped steel cantilever beam 3 are formed by welding the upper flange 21 of the H-shaped steel beam, the web 22 of the H-shaped steel beam, the lower flange 23 of the H-shaped steel beam and the web 32 of the T-shaped steel cantilever beam, and the whole weld joint is formed in a C shape; the top surface of the inner side of the T-shaped steel cantilever beam flange 31 is provided with a notch, the notch of the T-shaped steel cantilever beam flange 31 is clamped on the upper flange 21 of the H-shaped steel beam, and meanwhile, the T-shaped steel cantilever beam flange 31 is aligned with the top of the upper flange 21 of the H-shaped steel beam, and the T-shaped steel cantilever beam flange 31 and the upper flange 21 are welded and connected in the same way.
The joint of the H-shaped steel beam 2 and the rear buried plate 6 is provided with arc-shaped openings at the top angle and the bottom angle of the H-shaped steel beam web 22.
As shown in fig. 6, the T-shaped steel cantilever beam end plates 33 of the T-shaped steel cantilever beams 3 with different spans are tied through the angle steel 4, the T-shaped steel cantilever beam end plates 33 and the angle steel 4 are fixed in a welded mode, and the vertical limbs of the specific angle steel 4 are welded at the middle parts of the T-shaped steel cantilever beam end plates 33, so that the integrity is improved.
After the H-shaped steel beam 2 and the T-shaped steel cantilever beam 3 are integrally installed, the steel bar truss floor support plate 5 can be installed; the steel bar truss floor support plate 5 is fixed on the H-shaped steel beam 2 and the T-shaped steel cantilever beam 3 through bolts 10; and (5) after the steel bar truss floor support plate 5 is fixed, pouring concrete to finish the construction of the support structure.
Aiming at the problems of complex process, high construction danger and the like in the construction of the long and narrow variable-section cantilever plate with high layer height, the invention optimizes the whole long and narrow ultra-high suspended structural plate into a steel-concrete combined structure, adopts an H-shaped steel beam as a main beam to replace a reinforced concrete beam connecting structural column, and adopts a T-shaped steel cantilever beam 3 as a cantilever secondary beam to be connected with the H-shaped steel beam; the H-shaped steel beam and the T-shaped steel cantilever beam form a main beam system and a secondary beam system, and a steel bar truss floor supporting plate 5 is used as a structural floor slab, so that a variable cross-section floor slab supporting structure formed by combining the H-shaped steel and the T-shaped steel is formed; the working procedure of template support is omitted, so that template loss can be reduced, the construction period can be shortened, and the safety risk in the operation process can be reduced.
The invention relates to a construction method of a variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel, which comprises the following steps:
step one, the rear buried plates 6 are mounted on the vertical faces of a pair of concrete structural columns 1 through chemical anchors 7, and then the adapter plates 8 arranged in pairs are welded on the rear buried plates 6.
And step two, connecting an H-shaped steel beam web 22 of the H-shaped steel beam 2 on the adapter plate 8 through the high-strength bolts 9, and completing the installation of the H-shaped steel beam 2 after the adapter plate 8 is connected with the H-shaped steel beam 2.
And thirdly, welding T-shaped steel cantilever beams 3 with different lengths on two sides of the H-shaped steel beam 2 at intervals according to the section size of the region to be supported.
And step four, the T-shaped steel cantilever beams 3 with different spans are tied through the T-shaped steel cantilever beam end plates 33 and the angle steel 4.
And fifthly, fixing the steel bar truss floor support plate 5 on the H-shaped steel beam 2 and the T-shaped steel cantilever beam 3 through the bolts 10, and pouring concrete after the steel bar truss floor support plate 5 is fixed, so that the construction of the support structure is completed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1.H shaped steel and T shaped steel combination's variable cross section floor bearing structure, its characterized in that: the steel bar truss building support plate comprises a pair of concrete structure columns (1), H-shaped steel beams (2) connected between vertical faces of the pair of concrete structure columns (1), T-shaped steel cantilever beams (3) welded on two sides of the H-shaped steel beams (2) at intervals along the long axis, angle steel (4) welded between the outer edges of adjacent T-shaped steel cantilever beams (3) and steel bar truss building support plates (5) connected to the H-shaped steel beams (2) and the T-shaped steel cantilever beams (3);
the H-shaped steel beam (2) comprises an H-shaped steel beam upper flange (21), an H-shaped steel beam web (22) and an H-shaped steel beam lower flange (23); the upper flange (21) of the H-shaped steel beam is horizontal, and the two end faces of the short axial direction are cut into grooves; the middle part of the lower flange (23) of the H-shaped steel beam is horizontally bent downwards at the two ends of the short axial direction, and the end face is cut into grooves;
the T-shaped steel cantilever beam (3) comprises a T-shaped steel cantilever beam flange (31), a T-shaped steel cantilever beam web (32) and a T-shaped steel cantilever beam end plate (33);
the length of the T-shaped steel cantilever beam web (32) is larger than that of the T-shaped steel cantilever beam flange (31), and the part of the T-shaped steel cantilever beam web (32) exceeding the length of the T-shaped steel cantilever beam flange (31) is used as a stiffening plate of the H-shaped steel beam (2);
the H-shaped steel beam (2) is welded with the T-shaped steel cantilever beam web (32), and the whole weld joint is C-shaped;
the top surface of the inner side of the T-shaped steel cantilever beam flange (31) is provided with a notch, and the notch of the T-shaped steel cantilever beam flange (31) is fit and clamped on the upper flange (21) of the H-shaped steel beam;
the T-shaped steel cantilever beam flange (31) is aligned with the top of the H-shaped steel beam upper flange (21);
the T-shaped steel cantilever beam end plates (33) of the T-shaped steel cantilever beams (3) with different spans are tied through angle steel (4);
the steel bar truss floor support plate (5) is fixed on the H-shaped steel beam (2) and the T-shaped steel cantilever beam (3) through bolts (10);
the vertical face of the concrete structure column (1) is connected with a rear buried plate (6) through a chemical anchor bolt (7), a pair of L-shaped adapter plates (8) are welded on the rear buried plate (6), one support plate of the L-shaped adapter plates (8) is welded with the rear buried plate (6), and the other support plate is connected with an H-shaped steel beam web plate (22) through a high-strength bolt (9).
2. The construction method of the variable cross-section floor supporting structure formed by combining H-shaped steel and T-shaped steel as claimed in claim 1, which is characterized by comprising the following steps:
firstly, mounting a rear buried plate (6) on the vertical surfaces of a pair of concrete structural columns (1) through chemical anchor bolts (7), and then welding adapter plates (8) arranged in pairs on the rear buried plate (6);
connecting two end faces of the H-shaped steel beam (2) to the adapter plate (8) through high-strength bolts (9), and installing the H-shaped steel beam (2) after the adapter plate (8) is connected with the H-shaped steel beam (2);
thirdly, welding T-shaped steel cantilever beams (3) with different lengths on two sides of the H-shaped steel beam (2) at intervals according to the section size of the region to be supported;
step four, the T-shaped steel cantilever beams (3) with different spans are tied through a T-shaped steel cantilever beam end plate (33) and angle steel (4);
and fifthly, fixing the steel bar truss floor support plate (5) on the H-shaped steel beam (2) and the T-shaped steel cantilever beam (3) through the bolts (10), and performing concrete pouring after the steel bar truss floor support plate (5) is fixed, so that construction is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210986484.6A CN115354798B (en) | 2022-08-17 | 2022-08-17 | Variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210986484.6A CN115354798B (en) | 2022-08-17 | 2022-08-17 | Variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel and construction method |
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| CN115354798A CN115354798A (en) | 2022-11-18 |
| CN115354798B true CN115354798B (en) | 2024-04-09 |
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2022
- 2022-08-17 CN CN202210986484.6A patent/CN115354798B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1580174A (en) * | 1976-03-23 | 1980-11-26 | Lechtenboehmer H | Balcony structures added to buildings |
| CN203257090U (en) * | 2013-04-28 | 2013-10-30 | 广州建筑股份有限公司 | Framework system of cantilever slab |
| CN203603523U (en) * | 2013-10-12 | 2014-05-21 | 北京筑福国际工程技术有限责任公司 | Structure for transforming inner portion of old factory building in floor adding mode |
| CN203867216U (en) * | 2014-04-02 | 2014-10-08 | 北京六建集团有限责任公司 | Detachable steel frame supporting structure for ultra-high-rise building cantilevered plate |
| CN203856112U (en) * | 2014-05-25 | 2014-10-01 | 江西省电力设计院 | Novel profile steel combined overhung floor structure |
| CN108678417A (en) * | 2018-07-31 | 2018-10-19 | 天津市建筑设计院 | A kind of floor of steel structure transformation node |
| CN208981821U (en) * | 2018-10-08 | 2019-06-14 | 央固工程科技（上海）有限公司 | A kind of connection structure of newly-increased Long-span Cantilever girder steel and former concrete column |
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| CN115354798A (en) | 2022-11-18 |
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