CN108678417B - Steel construction floor reforms transform node - Google Patents
Steel construction floor reforms transform node Download PDFInfo
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- CN108678417B CN108678417B CN201810856089.XA CN201810856089A CN108678417B CN 108678417 B CN108678417 B CN 108678417B CN 201810856089 A CN201810856089 A CN 201810856089A CN 108678417 B CN108678417 B CN 108678417B
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- floor slab
- floor
- steel beam
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0237—Increasing or restoring the load-bearing capacity of building construction elements of storey floors
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a steel structure floor reconstruction node, which comprises an original floor, wherein steel beams are arranged at the edges of the original floor, and the original floor and the steel beams are connected and fixed together through bolts; the steel beam is H-shaped steel, and the upper flange and the lower flange are parallel to the original floor slab; the edge of the upper flange of the steel beam is welded with a supporting plate parallel to the original floor slab; a plurality of groups of support plate stiffening ribs are welded between the support plates and the upper flange and the lower flange of the steel beam and between the support plates and the web plate; the other side of the steel beam web plate is welded with steel beam stiffening ribs at positions corresponding to the stiffening ribs of the support plate; a plurality of newly-added studs are welded on the floor slab supporting plate, and the newly-added floor slab is connected and fixed with the supporting plate through the studs. The method is simple and convenient, can ensure the reliable support of the newly added floor slab, can ensure the horizontal force transmission of the floor slab by arranging the newly added stud, has convenient construction, definite force transmission, safety and reliability, and is suitable for steel structure engineering of various scales.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a steel structure floor slab transformation node.
Background
At present, along with the requirements of urban updating and development, the number of existing building reinforcement and reconstruction projects is increased year by year in China, and the condition of floor slab reconstruction is frequently met. Although the method is theoretically feasible, the actual operation is complicated, the quality is not easy to guarantee, the bolts on the original steel beam are often required to be removed so that a new steel bearing plate can be paved, and the bolts are required to be re-repaired, so that the construction difficulty is high.
In order to solve the problems, a steel structure floor slab transformation node is required to be designed, and the problems of high construction difficulty and poor quality reliability are solved. The design requirement of the steel structure floor slab transformation node is that the method is simple, the force transfer is clear, safe and reliable, and the method is suitable for steel structure transformation projects of various scales.
Disclosure of Invention
The invention aims to solve the problems and provides a steel structure floor slab transformation node.
The invention is implemented according to the following technical scheme.
The steel structure floor slab transformation node comprises an original floor slab, wherein steel beams are arranged at the edges of the original floor slab, and the original floor slab and the steel beams are connected and fixed together through bolts; the steel beam is H-shaped steel, and the upper flange and the lower flange are parallel to the original floor slab; the edge of the upper flange of the steel beam is welded with a supporting plate parallel to the original floor slab; a plurality of groups of support plate stiffening ribs are welded between the support plates and the upper flange and the lower flange of the steel beam and between the support plates and the web plate; the other side of the steel beam web plate is welded with steel beam stiffening ribs at positions corresponding to the stiffening ribs of the support plate; a plurality of newly-added studs are welded on the floor slab supporting plate, and the newly-added floor slab is connected and fixed with the supporting plate through the studs.
Further, the newly added floor slab is a common concrete floor slab, a profiled steel sheet concrete composite floor slab or a steel bar truss plate floor slab.
Further, the supporting plate is welded from the outer side of the upper flange of the steel beam, and the supporting plate is a steel plate with the thickness of not less than 8 mm.
Further, the support plate stiffeners and the steel beam stiffeners are perpendicular to the web plate and the lower flange.
The invention achieves the following beneficial effects.
The invention solves the problems of large difficulty and poor quality of reconstruction construction of the common steel structure floor slab, can avoid dismantling part of concrete and bolts on the original steel beam, can ensure that the reliable connection between the original floor slab and the steel beam is not disturbed, and simultaneously avoids the damage of different degrees to the original steel beam caused by the dismantling work. The method for reforming the steel structure floor slab has the advantages that the method is simple, the reliable support of the newly-added floor slab can be ensured, meanwhile, the arrangement of the newly-added stud can also ensure the horizontal force transmission of the floor slab, and the node is convenient to construct, clear in force transmission, safe and reliable, and is suitable for steel structure engineering of various scales.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a left side view of the present invention.
1, an original floor slab; 2. adding a floor slab; 3. a steel beam; 301. an upper flange; 302. a lower flange; 303. a web; 4. steel beam stiffening ribs; 5. a support plate stiffener; 6. a support plate; 7. and (5) a peg.
Detailed Description
The present invention will be further described with reference to the drawings and examples.
As shown in fig. 1-2, a steel structure floor slab reforming node comprises an original floor slab 1, wherein steel beams 3 are arranged at the edges of the original floor slab 1, and the original floor slab 1 and the steel beams 3 are connected and fixed together through bolts 7; the steel beam 3 is H-shaped steel, and the upper flange and the lower flange are parallel to the original floor slab 1; the edge of the upper flange 301 of the steel beam 3 is welded with a supporting plate 6 parallel to the original floor slab 1; a plurality of groups of support plate stiffening ribs 5 are welded between the support plates 6 and the upper flange and the lower flange of the steel beam 3 and between the support plates and the web plates 303; the steel beam stiffening ribs 4 are welded on the other side of the web 303 of the steel beam 3 at positions corresponding to the supporting plate stiffening ribs 5; a plurality of newly added studs 7 are welded on the floor supporting plate 6, and the newly added floor 2 is connected and fixed with the supporting plate 6 through the studs 7.
The newly added floor slab 2 is a common concrete floor slab, a profiled steel sheet concrete composite floor slab or a steel bar truss plate floor slab.
The supporting plate 6 is welded from the outer side of the upper flange 301 of the steel beam 3, and is a steel plate with the thickness of not less than 8 mm.
The support plate stiffeners 5 and the steel beam stiffeners 4 are perpendicular to the web 303 and the bottom flange 302.
The principle and the using method of the invention are as follows:
the node is composed of a steel beam 3, a newly added floor slab 2, a supporting plate 6, a supporting plate stiffening rib 5, a steel beam stiffening rib 4, a peg 7 and an original floor slab 1. The method is mainly used for steel structure floor reconstruction engineering.
During construction, firstly, a floor support plate 6 is welded beside an upper flange 301 of a steel beam 3, a support plate stiffening rib 5 is welded between the floor support plate 6 and the upper flange and the lower flange of the steel beam 3 as well as between the floor support plate and a web 303, a steel beam stiffening rib 4 is welded at the other side of the steel beam corresponding to the position of the support plate stiffening rib 5, a stud 7 is welded on the floor support plate 6, then a formwork is used for pouring floor concrete, and when the floor is a profiled steel plate concrete composite floor or a steel truss plate floor, a profiled steel plate or a steel truss plate is paved, then the stud 7 is welded, and then the floor concrete is poured.
The specifications and the intervals of the supporting plate stiffening ribs 5 and the steel beam stiffening ribs 4 are determined according to the specific conditions, and the supporting plate stiffening ribs have the functions of enhancing the bearing capacity and the stability, for example, the added floor slab has larger load, the supporting plate with larger thickness can be used, and meanwhile, the number of the supporting plate stiffening ribs in unit length is increased.
Claims (3)
1. The steel structure floor slab transformation node comprises an original floor slab (1), wherein steel beams (3) are arranged at the edges of the original floor slab (1), and the original floor slab (1) and the steel beams (3) are connected and fixed together through bolts (7); the steel beam (3) is H-shaped steel, and the upper flange and the lower flange are parallel to the original floor slab (1); the method is characterized in that the edge of the upper flange (301) of the steel beam (3) is welded with a supporting plate (6) parallel to the original floor slab (1); a plurality of groups of support plate stiffening ribs (5) are welded between the support plates (6) and the upper flange, the lower flange and the web plates (303) of the steel beam (3); the steel beam stiffening ribs (4) are welded at the positions corresponding to the supporting plate stiffening ribs (5) at the other side of the web plate (303) of the steel beam (3); a plurality of newly added studs (7) are welded on the supporting plate (6), and the newly added floor (2) is connected and fixed with the supporting plate (6) through the studs (7); the newly added floor (2) is a common concrete floor, a profiled steel sheet concrete composite floor or a steel bar truss plate floor; the supporting plate (6) is welded from the outer side of the upper flange (301) of the steel beam (3).
2. A steel structure floor reconstruction node according to claim 1, wherein the support plate stiffeners (5) are perpendicular to the web (303) and the lower flange (302) and welded to the support plate (6) and the upper flange (301), the lower flange (302) and the web (303) of the steel beam (3).
3. A steel structure floor reconstruction node as claimed in claim 1, wherein the steel beam stiffeners (4) are perpendicular to the web (303) and lower flanges (302) and correspond to the support plate stiffeners (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856089.XA CN108678417B (en) | 2018-07-31 | 2018-07-31 | Steel construction floor reforms transform node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810856089.XA CN108678417B (en) | 2018-07-31 | 2018-07-31 | Steel construction floor reforms transform node |
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| Publication Number | Publication Date |
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| CN108678417A CN108678417A (en) | 2018-10-19 |
| CN108678417B true CN108678417B (en) | 2023-07-21 |
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| CN201810856089.XA Active CN108678417B (en) | 2018-07-31 | 2018-07-31 | Steel construction floor reforms transform node |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042962A (en) * | 2019-05-20 | 2019-07-23 | 中建钢构有限公司 | Board connecting structure and its construction method drop |
| CN110284716B (en) * | 2019-07-18 | 2021-06-29 | 成都建工第四建筑工程有限公司 | Construction method of lifting plate node structure of steel bar truss floor bearing plate |
| CN110821157A (en) * | 2019-11-28 | 2020-02-21 | 中国一冶集团有限公司 | Exempt from to support detachable steel bar truss building carrier plate side forms |
| CN115354798B (en) * | 2022-08-17 | 2024-04-09 | 中建一局集团建设发展有限公司 | Variable cross-section floor slab supporting structure combining H-shaped steel and T-shaped steel and construction method |
| CN115467548A (en) * | 2022-08-23 | 2022-12-13 | 中国京冶工程技术有限公司 | Method for reinforcing lower chord of steel truss gallery |
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