CN110424548B - Steel pipe concrete column-beamless floor connecting node and construction method thereof - Google Patents
Steel pipe concrete column-beamless floor connecting node and construction method thereof Download PDFInfo
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- CN110424548B CN110424548B CN201910801865.0A CN201910801865A CN110424548B CN 110424548 B CN110424548 B CN 110424548B CN 201910801865 A CN201910801865 A CN 201910801865A CN 110424548 B CN110424548 B CN 110424548B
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- steel
- steel pipe
- column
- casting
- orthogonal
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 142
- 239000010959 steel Substances 0.000 title claims abstract description 142
- 239000004567 concrete Substances 0.000 title claims abstract description 33
- 238000010276 construction Methods 0.000 title claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 32
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000003313 weakening effect Effects 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention provides a steel tube concrete column-flat slab connecting node, wherein part of the area of a reinforced concrete floor slab connected with the steel tube concrete column is replaced by a steel casting, and the width of the area is 4-6 times of that of the steel tube concrete column; the steel casting consists of a central steel pipe and an orthogonal steel plate grid; the orthogonal steel plate grids are arranged on four sides of the central steel pipe, and steel plate sections connected with the sides of the central steel pipe in the orthogonal steel plate grids are respectively provided with arc-shaped grooves at the upper end and the lower end to form a weakening zone; the central steel pipe is connected with the column steel pipe through a flange; and concrete is poured into the column steel pipes to form the steel pipe concrete column, round holes are formed in the outermost steel plates of the orthogonal steel plate grids, and steel bars of the peripheral floor slabs penetrate through the round holes and are anchored on the steel plates through bolts. The invention also provides a construction method of the connecting node.
Description
Technical Field
The invention relates to the technical field of energy consumption and shock absorption control in building structures, in particular to a low-damage and easy-to-repair steel tube concrete column-girderless floor connecting node.
Background
The slab-column structure consisting of the girderless floor and the steel tube concrete column has the advantages of high floor clearance, large building use space and the like, and is increasingly widely applied to building structures. However, under the action of an earthquake, the plate column connecting nodes are easy to be punched and damaged, so that the floor slab damage is difficult to repair; if the node punching is severely damaged, the whole structure is even collapsed.
Disclosure of Invention
The invention aims at solving the defects in the prior art and provides a low-damage and easy-to-repair steel tube concrete column-girderless floor connecting node.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the steel pipe concrete column-flat slab connecting node is characterized in that a part of the area of the reinforced concrete floor slab connected with the steel pipe concrete column is replaced by a steel casting, and the width of the area is 4-6 times of that of the steel pipe concrete column;
the steel casting consists of a central steel pipe and an orthogonal steel plate grid; the orthogonal steel plate grids are arranged on four sides of the central steel pipe, and steel plate sections connected with the sides of the central steel pipe in the orthogonal steel plate grids are respectively provided with arc-shaped grooves at the upper end and the lower end to form a weakening zone;
the central steel pipe is connected with the column steel pipe through a flange; and concrete is poured into the column steel pipes to form the steel pipe concrete column, round holes are formed in the outermost steel plates of the orthogonal steel plate grids, and steel bars of the peripheral floor slabs penetrate through the round holes and are anchored on the steel plates through bolts.
The invention also provides a construction method of the steel tube concrete column-beamless floor connecting node, which comprises the following steps:
1) According to the thickness of the floor slab and the section size of the column, designing a steel casting and manufacturing a corresponding casting mould;
2) Integrally casting a steel casting on a die;
3) Welding a flange on a central steel pipe of the steel casting;
4) Determining the positions of round holes corresponding to the steel plates at the outermost periphery of the orthogonal steel plate grid according to the positions of the floor steel bars, and finishing drilling;
5) Supporting the floor slab mould and positioning the steel casting;
6) The steel bars of the floor slab penetrate through the steel plates at the outermost periphery of the orthogonal steel plate grid and are anchored through bolts;
7) Connecting the central steel pipe with the column steel pipe through a flange;
8) And pouring floor slab and column concrete. And after the strength of the concrete meets the requirement, covering a steel cover plate on the steel casting.
Compared with the prior art, the invention has the following advantages and outstanding effects:
the low-damage easy-to-repair steel tube concrete column-flat slab connection node is characterized in that the section of a steel plate section connected with a central steel tube in a steel casting is weakened, so that the structure yield is ensured to only occur in the weakened section under the action of an earthquake, other areas of a floor slab can be prevented from being damaged, and the structure is easy to repair. The invention strengthens the anti-impact cutting damage performance of the steel tube concrete column-flat slab connection node, and has wide application prospect in multi-layer buildings.
Drawings
FIG. 1 is a perspective view of a floor slab;
FIG. 2 is a perspective view of a floor slab;
fig. 3 and 4 are respectively a perspective view and a plan view of the steel casting;
FIG. 5 is a detailed construction view of a cast steel;
FIG. 6 is a view showing a connection structure between an outermost steel plate of a steel casting and a reinforcing steel bar;
in the figure: 1-floor slab; 2-a steel tube concrete column; 3-steel cover plate; 4-flanges; 5-reinforcing steel bars; 6-a central steel tube; 7-orthogonal steel plates; 8-an outermost steel plate; 9-a cross-sectional weakened area; 10-bolts.
Detailed description of the preferred embodiments
The following describes the embodiments of the present invention further with reference to the accompanying drawings.
Referring to fig. 1-6, a reinforced concrete column-girderless floor joint with low damage and easy repair is provided, wherein a part of the area of a reinforced concrete floor slab 1 connected with a column 2 is replaced by steel casting, and the width of the area is 4-6 times of the width of the column 2, as shown in fig. 1 and 2. The steel casting consists of a central steel tube 6 and an orthogonal steel plate grid 7, as shown in fig. 3 and 4. The orthogonal steel plate grids 7 are arranged on four sides of the central steel pipe 6, and arc-shaped grooves are respectively formed in the upper end and the lower end of steel plate segments connected with the sides of the central steel pipe 6 in the orthogonal steel plate grids 7 to form a weakening zone 9; this ensures that yielding occurs only in this weakened section 9, other areas of the floor slab 1 are protected from damage and the structure is easily repaired, as shown in figure 5.
The central steel pipe 6 of the steel casting is connected with the column steel pipe through a flange 4; concrete is poured in the steel pipes 6 to form the steel pipe concrete column 2, so that the shearing force and the bending moment of the floor slab 1 can be reliably transmitted to the column 2. Round holes are formed in the outermost steel plate 8 of the orthogonal steel plate grid 7, and steel bars 5 of the peripheral floor slabs penetrate through the round holes and are anchored on the steel plate through bolts 10, as shown in fig. 6.
The construction method of the invention comprises the following steps:
(1) And (5) a factory prefabrication stage. Firstly, according to the thickness of the floor slab 1 and the section size of the column 2, a steel casting is designed and a corresponding casting mould is manufactured. The cast steel is then integrally cast on the mold. Next, the flange 4 is welded to the central steel pipe 6 of the cast steel. And then, according to the positions of the floor slab steel bars 5, determining the positions of the round holes corresponding to the outermost steel plates 8 of the steel castings and finishing drilling.
(2) And (3) a site construction stage. The floor 1 supports the mould and simultaneously positions the steel casting. The steel bars 5 of the floor slab 1 pass through the outermost steel plates 8 of the orthogonal steel plate grid 7 and are anchored by bolts 10; then, connecting the central steel pipe 6 of the steel casting with the column steel pipe through a flange 4; then, concrete is poured for the floor slab 1 and the column 2. And after the strength of the concrete reaches the requirement, covering the steel plate 3 on the steel casting, and completing the construction of the connection node of the concrete filled steel tube column and the girderless floor.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the invention. Equivalent changes and modifications are intended to be covered by this invention, as equivalents will fall within the scope of the invention.
Claims (1)
1. A construction method of a steel tube concrete column-flat slab connecting node is characterized by comprising the following steps:
the part of the area of the reinforced concrete floor slab connected with the steel pipe concrete column is replaced by a steel casting, and the width of the area is 4-6 times of that of the steel pipe concrete column;
the steel casting consists of a central steel pipe and an orthogonal steel plate grid; the orthogonal steel plate grids are arranged on four sides of the central steel pipe, and steel plate sections connected with the sides of the central steel pipe in the orthogonal steel plate grids are respectively provided with arc-shaped grooves at the upper end and the lower end to form a weakening zone;
the central steel pipe is connected with the column steel pipe through a flange; pouring concrete into the column steel pipes to form the steel pipe concrete column, wherein round holes are formed in the outermost steel plates of the orthogonal steel plate grids, and steel bars of the peripheral floor slabs penetrate through the round holes and are anchored on the steel plates through bolts;
the construction method comprises the following steps:
1) According to the thickness of the floor slab and the section size of the column, designing a steel casting and manufacturing a corresponding casting mould;
2) Integrally casting a steel casting on a die;
3) Welding a flange on a central steel pipe of the steel casting;
4) Determining the positions of round holes corresponding to the steel plates at the outermost periphery of the orthogonal steel plate grid according to the positions of the floor steel bars, and finishing drilling;
5) Supporting the floor slab mould and positioning the steel casting;
6) The steel bars of the floor slab penetrate through the steel plates at the outermost periphery of the orthogonal steel plate grid and are anchored through bolts;
7) Connecting the central steel pipe with the column steel pipe through a flange;
8) Pouring the floor slab and the column concrete, and covering a steel cover plate on the steel casting after the strength of the concrete meets the requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801865.0A CN110424548B (en) | 2019-08-28 | 2019-08-28 | Steel pipe concrete column-beamless floor connecting node and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910801865.0A CN110424548B (en) | 2019-08-28 | 2019-08-28 | Steel pipe concrete column-beamless floor connecting node and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110424548A CN110424548A (en) | 2019-11-08 |
| CN110424548B true CN110424548B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910801865.0A Active CN110424548B (en) | 2019-08-28 | 2019-08-28 | Steel pipe concrete column-beamless floor connecting node and construction method thereof |
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| Country | Link |
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| CN (1) | CN110424548B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535452B (en) * | 2020-05-26 | 2022-02-11 | 华北理工大学 | Plate column node connecting structure, concrete filled steel tube plate column structure and construction method |
| CN112267571B (en) * | 2020-11-11 | 2022-02-01 | 吉林建筑科技学院 | Prefabricated section steel concrete column and profiled steel sheet composite board connecting joint and construction method |
| CN113389312A (en) * | 2021-07-30 | 2021-09-14 | 南通欧本建筑科技有限公司 | Carapace column girderless floor system node |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2130106C1 (en) * | 1996-03-19 | 1999-05-10 | Арасланов Зинатула Гайнатдинович | Methods for embodying structural system of fully prefabricated civic building |
| CN105735541A (en) * | 2016-03-24 | 2016-07-06 | 金天德 | Steel structure girderless floor slab column structure |
| CN107130721A (en) * | 2017-07-10 | 2017-09-05 | 南京工业大学 | Anti die-cut concrete rectangle column slab node and concrete slab node |
| CN108571070A (en) * | 2018-05-24 | 2018-09-25 | 福建工程学院 | A kind of Prefabricated concrete-filled steel tube ring beam connection structure and construction method |
| CN210713231U (en) * | 2019-08-28 | 2020-06-09 | 华侨大学 | Steel core concrete column-no beam superstructure connected node |
-
2019
- 2019-08-28 CN CN201910801865.0A patent/CN110424548B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2130106C1 (en) * | 1996-03-19 | 1999-05-10 | Арасланов Зинатула Гайнатдинович | Methods for embodying structural system of fully prefabricated civic building |
| CN105735541A (en) * | 2016-03-24 | 2016-07-06 | 金天德 | Steel structure girderless floor slab column structure |
| CN107130721A (en) * | 2017-07-10 | 2017-09-05 | 南京工业大学 | Anti die-cut concrete rectangle column slab node and concrete slab node |
| CN108571070A (en) * | 2018-05-24 | 2018-09-25 | 福建工程学院 | A kind of Prefabricated concrete-filled steel tube ring beam connection structure and construction method |
| CN210713231U (en) * | 2019-08-28 | 2020-06-09 | 华侨大学 | Steel core concrete column-no beam superstructure connected node |
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| CN110424548A (en) | 2019-11-08 |
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