CN113775114A - Column cap for flat slab node and arrangement method thereof - Google Patents
Column cap for flat slab node and arrangement method thereof Download PDFInfo
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- CN113775114A CN113775114A CN202111169911.3A CN202111169911A CN113775114A CN 113775114 A CN113775114 A CN 113775114A CN 202111169911 A CN202111169911 A CN 202111169911A CN 113775114 A CN113775114 A CN 113775114A
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- flat slab
- node
- cap
- crossing
- cross beam
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- 238000000034 method Methods 0.000 title claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 5
- 238000004080 punching Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a column cap for a flat slab node, which comprises cross beams and edge beams; the crossing position of the crossing beam is arranged at the upper end of the column of the girderless floor system node, a circle of boundary beam is arranged on the periphery of the crossing beam, and the boundary beam is fixedly connected with the end part of the crossing beam far away from the crossing position; a plurality of holes are formed between the cross beam and the edge beam; the crossing position of the crossing beam is coincided with the geometric center of the boundary beam. The invention provides the beam-type column cap aiming at the difficulty of hidden beam construction at the node and the inconvenience of vertical pipeline line arrangement caused by the arrangement mode of the flat slab, and the arrangement mode of the flat slab node with the holes in the column cap can solve the problem of vertical arrangement of the pipeline line through the holes; meanwhile, due to the existence of the beam, the punching failure mode of the flat slab is converted into the shearing failure mode with a mature calculation formula, and the safety of the flat slab node is improved by ensuring the shearing resistance of the structure.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a column cap for a flat slab node and an arrangement method thereof.
Background
The flat slab is a structural form widely applied in building engineering, can mainly enlarge the clearance height or reduce the floor height, has better comprehensive economic benefit than the traditional beam slab structure, has the characteristic of direct force transmission path, and is widely applied to the underground garage structure.
The flat slab node is generally composed of slab columns, but is easy to be damaged by punching, and further to collapse continuously, so that great loss is caused. Meanwhile, in a flat slab structure, vertical pipeline lines are not easy to arrange.
Aiming at the problems, the prior art mainly aims at preventing damage by arranging a supporting plate or a hidden beam at a node, but the hidden beam construction has certain difficulty and is easy to ignore, and the problem of troublesome arrangement of vertical pipeline lines is not solved yet.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a column cap for a flat slab node, and provides a beam type column cap aiming at the difficulty in constructing a hidden beam at the node and the inconvenience in the arrangement of a vertical pipeline line in a flat slab arrangement mode, and the arrangement mode of the flat slab node with holes in the column cap can solve the problem of the vertical arrangement of the pipeline line through the holes; meanwhile, due to the existence of the beam, the punching failure mode of the flat slab is converted into the shearing failure mode with a mature calculation formula, and the safety of the flat slab node is improved by ensuring the shearing resistance of the structure.
Another object of the present invention is to provide a method of arranging caps for a flat slab node.
The purpose of the invention is realized by the following technical scheme:
a column cap for a flat slab node comprises cross beams and edge beams; the crossing position of the crossing beam is arranged at the upper end of the column of the girderless floor system node, a circle of boundary beam is arranged on the periphery of the crossing beam, and the boundary beam is fixedly connected with the end part of the crossing beam far away from the crossing position; a plurality of holes are formed between the cross beam and the edge beam; the crossing position of the crossing beam is coincided with the geometric center of the boundary beam.
Preferably, the cross beam is a cross beam, the edge beam is a square edge beam, the cross beam and the edge beam form a Chinese character tian shape, and four holes are formed between the cross beam and the edge beam.
Preferably, the junction of the cross beam and the edge beam is provided with a hidden beam extending outwards, and the hidden beam is arranged in a floor slab connected with the edge beam.
Preferably, the holes are used for vertically arranging pipeline lines, or the outer surfaces of the holes are provided with a layer of plugging plates. When certain reserved holes do not need to be vertically provided with pipeline lines, the whole block is carried out by using a blocking plate (thin plate) which does not exceed the thickness of the floor slab; when certain reserved holes are vertically arranged on pipeline lines and do not need such large hole space, the holes can be partially blocked by blocking plates (thin plates) which do not exceed the thickness of the floor slab.
Preferably, the cross beam is an X-shaped cross beam.
Preferably, the cross beam is a cross beam shaped like a Chinese character 'mi'.
Preferably, the edge beam is in a regular shape, and the regular shape includes a circle, an ellipse, a diamond shape, and a regular polygon.
Preferably, the height of the side beams is not greater than the height of the cross beams.
Preferably, the width of the cross beam is not greater than the width of the column of the flat slab node.
The other purpose of the invention is realized by the following technical scheme:
a method for arranging caps for a flat slab node, comprising the steps of:
s1, fixing the template of the column cap on the column of the flat slab node;
s2, binding the reinforcement cages of the cross beam and the reinforcement cages of the side beams, placing the binding at the specified positions, arranging baffles around the holes, and then pouring concrete; if the holes are not needed, plugging is carried out by using a plugging plate which does not exceed the thickness of the floor slab, and finally a reinforced concrete beam type column cap is formed.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. compared with the existing common flat slab, the invention effectively converts the punching failure mode of the flat slab into the shearing failure mode with a mature calculation formula by arranging the beam type column caps, and improves the safety of the flat slab node by ensuring the shearing resistance of the structure.
2. Compared with the prior common frame beam floor, the invention keeps the beam-free floor node, ensures the clearance height of the floor outside the node and effectively compresses the structure height.
3. Compared with the existing common flat slab, the flat slab is provided with the holes at the joints, so that the vertical arrangement of pipeline lines is facilitated, the workload of arranging the pipeline lines on site is reduced, and the construction period is shortened.
Drawings
Figure 1 is a top cross-sectional view of a cap for a flat slab node according to the present invention, the cap not being connected to a surrounding floor slab.
Fig. 2 is a top sectional view of a cap for a flat slab node according to the present invention, the cap being coupled to a peripheral floor slab.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
Fig. 4 is a sectional view taken along line B-B of fig. 2.
Wherein the reference numerals have the following meanings:
1-field beam column cap, 2-column without beam floor node, 3-cross beam, 4-edge beam, 5-hole, 6-hidden beam, 7-floor.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Referring to fig. 1-4, the column cap is a cross-shaped beam column cap 1, the cross-shaped beam column cap 1 comprises a cross beam 3 arranged at the upper end of a column 2 of the flat slab node and a circle of boundary beams 4 surrounding the cross beam end, and four holes 5 are formed between the cross beam 3 and the boundary beams 4. The boundary beam 4 is square, and the cross beam 3 and the boundary beam 4 are square.
According to the structural requirements, a hidden beam 6 is arranged in the floor 7 connected with the Chinese character tian-shaped beam type column cap 1 along the direction of the cross beam 3.
The cross-shaped cross beams 3 and the side beams 4 are required to be in accordance with the regulations of concrete structure design specifications (GB50010-2010), building structure earthquake-resistant design specifications (GB50011-2010) and high-rise building concrete structure technical specifications (JGJ3-2010) in terms of cross-sectional area, distance and position of longitudinal reinforcements and stirrups.
And when holes are not reserved at the positions of the reserved holes 5, plugging is carried out by using plugging plates not exceeding the thickness of the floor slab.
The width of the edge beam 4 is not less than 300 mm.
The height of the edge beam 4 is not more than that of the cross beam 3.
When the flat-roof beam-free floor joint is manufactured on site, firstly, a template of a flat-roof beam-type beam column cap 1 is fixed on a column 2 of the flat-roof beam-free floor joint, then a reinforcement cage of a cross beam 3 and a reinforcement cage of a side beam 4 are bound and placed at a specified position, baffles can be arranged around a hole 5, then concrete pouring is carried out, if the hole 5 is not needed, a plugging plate which does not exceed the thickness of a floor slab is used for plugging, and finally, the flat-roof beam-type beam column cap 1 made of reinforced concrete is formed. The flat slab node effectively converts the punching failure form of the flat slab into the shearing failure form with a mature calculation formula by arranging the Chinese character 'tian' -shaped beam type column cap, and improves the safety of the flat slab node by ensuring the shearing resistance of the structure; the clear height of the structure is ensured; the holes are reserved so that the pipelines and the lines can be conveniently arranged along the vertical direction of the structure, the workload of laying the pipelines and the lines is reduced, and the effect of shortening the construction period is achieved.
In the embodiment, the cross beams and the square frames form the beam type column caps in a shape like a Chinese character tian, which is the optimal embodiment of the invention, the construction is convenient, and the force transmission is direct.
However, the shapes of the cross beam and the frame are not limited to this, as long as the intersection position of the cross beam coincides with the geometric center of the edge beam:
the shape of the crossed beam can be formed by crossing N beams (N is more than or equal to 2), and the crossed angle can be in various forms, for example, when N is 2, two beams are mutually perpendicular and form a cross shape, and the included angle of the two beams is not 90 degrees and form an X shape; when N is 3, the included angle between two adjacent beams may be 60 ° or other angles; when N is 4, the included angle between two adjacent beams may be 45 °, in this case, the included angle is in a shape of a Chinese character mi, or another angle may be used.
The boundary beam is in a regular shape, and the regular shape comprises a circle, an ellipse, a diamond and a regular polygon.
The cross beam and the boundary beam can be randomly combined, and simultaneously, better stress combination can be considered: for example, when the frame is a regular polygon, each beam of the cross beam is set as much as possible to be perpendicular to the frame of the contacted regular polygon, and the end part of each beam of the cross beam is not preferentially connected with the vertex of the regular polygon; for another example, when N beams are crossed to form a cross beam and a regular polygon frame is selected, the number of sides of the regular polygon is preferably 2N.
Meanwhile, the further preferable scheme is as follows: the width of the crossed beam is not more than that of the column of the flat slab node. The reasons for this design are: the shearing resistance is related to the beam width of the cross beam, but when the width of the cross beam is larger than the column width of the column of the flat slab node, the shearing resistance of the beam at the column edge cannot be improved, and in order to avoid that a designer wrongly calculates the shearing resistance capacity due to the arrangement of the wide flat beam of the cross beam, the proposal is to maintain the beam width of the cross beam not larger than the column width of the column of the flat slab node, so as to ensure the shearing resistance safety.
When the beam width of the cross beam is smaller than the column width of the column of the girderless floor system node, the formed holes are not standard rectangles and can be described as quasi-rectangles, in fact, four holes can be formed for vertical piping of equipment, if the size of the piping does not need to be large, the piping can be partially plugged, and the piping holes of the equipment can be arranged as required.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a cap for having a beam superstructure node which characterized in that: comprises a cross beam and a boundary beam; the crossing position of the crossing beam is arranged at the upper end of the column of the girderless floor system node, a circle of boundary beam is arranged on the periphery of the crossing beam, and the boundary beam is fixedly connected with the end part of the crossing beam far away from the crossing position; a plurality of holes are formed between the cross beam and the edge beam; the crossing position of the crossing beam is coincided with the geometric center of the boundary beam.
2. The cap-post for a flat slab node of claim 1, wherein: the cross beam is a cross beam, the edge beam is a square edge beam, the cross beam and the edge beam form a Chinese character tian shape, and four holes are formed between the cross beam and the edge beam.
3. The cap-post for a flat slab node of claim 1, wherein: the junction of the cross beam and the boundary beam is provided with a hidden beam which extends outwards, and the hidden beam is arranged in a floor slab connected with the boundary beam.
4. The cap-post for a flat slab node of claim 1, wherein: the hole is used for vertically arranging pipeline lines, or the outer surface of the hole is provided with a layer of plugging plate.
5. The cap-post for a flat slab node of claim 1, wherein: the cross beam is an X-shaped cross beam.
6. The cap-post for a flat slab node of claim 1, wherein: the cross beam is a cross beam shaped like a Chinese character 'mi'.
7. The cap-post for a flat slab node of claim 1, wherein: the boundary beam is in a regular shape, and the regular shape comprises a circle, an ellipse, a diamond and a regular polygon.
8. The cap-post for a flat slab node of claim 1, wherein: the height of the side beams is not more than that of the cross beams.
9. The cap-post for a flat slab node of claim 1, wherein: the width of the crossed beam is not more than that of the column of the flat slab node.
10. The method of arranging caps for a flat slab node according to any of claims 1 to 9, comprising the steps of:
s1, fixing the template of the column cap on the column of the flat slab node;
s2, binding the reinforcement cages of the cross beam and the reinforcement cages of the side beams, placing the binding at the specified positions, arranging baffles around the holes, and then pouring concrete; if the holes are not needed, plugging is carried out by using a plugging plate which does not exceed the thickness of the floor slab, and finally a reinforced concrete beam type column cap is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111169911.3A CN113775114A (en) | 2021-10-08 | 2021-10-08 | Column cap for flat slab node and arrangement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111169911.3A CN113775114A (en) | 2021-10-08 | 2021-10-08 | Column cap for flat slab node and arrangement method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113775114A true CN113775114A (en) | 2021-12-10 |
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ID=78854938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111169911.3A Pending CN113775114A (en) | 2021-10-08 | 2021-10-08 | Column cap for flat slab node and arrangement method thereof |
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| Country | Link |
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| CN (1) | CN113775114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653177A (en) * | 2022-11-12 | 2023-01-31 | 广东南海国际建筑设计有限公司 | Construction method of cast-in-place reinforced concrete hollow floor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07324419A (en) * | 1994-05-31 | 1995-12-12 | Toda Constr Co Ltd | Flat slab construction |
| JP2002070155A (en) * | 2000-09-05 | 2002-03-08 | Penta Ocean Constr Co Ltd | Connecting structure for steel pipe column and flat slab and its connecting method |
| JP2013185337A (en) * | 2012-03-07 | 2013-09-19 | Toda Constr Co Ltd | Joint material between column and flat slab and joint structure thereof |
| CN204510467U (en) * | 2015-03-28 | 2015-07-29 | 香港华艺设计顾问(深圳)有限公司 | A kind of cap node for basement flat slab structure |
| CN105178354A (en) * | 2015-09-06 | 2015-12-23 | 上海建工二建集团有限公司 | Tian-shaped beam column cap and beamless slab structure system |
| CN108265866A (en) * | 2018-03-28 | 2018-07-10 | 吴葆永 | Bolumn cap radiates the novel floor system of cross coupling |
| CN215858601U (en) * | 2021-10-08 | 2022-02-18 | 华南理工大学建筑设计研究院有限公司 | Column cap for flat slab node |
-
2021
- 2021-10-08 CN CN202111169911.3A patent/CN113775114A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07324419A (en) * | 1994-05-31 | 1995-12-12 | Toda Constr Co Ltd | Flat slab construction |
| JP2002070155A (en) * | 2000-09-05 | 2002-03-08 | Penta Ocean Constr Co Ltd | Connecting structure for steel pipe column and flat slab and its connecting method |
| JP2013185337A (en) * | 2012-03-07 | 2013-09-19 | Toda Constr Co Ltd | Joint material between column and flat slab and joint structure thereof |
| CN204510467U (en) * | 2015-03-28 | 2015-07-29 | 香港华艺设计顾问(深圳)有限公司 | A kind of cap node for basement flat slab structure |
| CN105178354A (en) * | 2015-09-06 | 2015-12-23 | 上海建工二建集团有限公司 | Tian-shaped beam column cap and beamless slab structure system |
| CN108265866A (en) * | 2018-03-28 | 2018-07-10 | 吴葆永 | Bolumn cap radiates the novel floor system of cross coupling |
| CN215858601U (en) * | 2021-10-08 | 2022-02-18 | 华南理工大学建筑设计研究院有限公司 | Column cap for flat slab node |
Non-Patent Citations (2)
| Title |
|---|
| 刘禹等: "建筑结构 概念·原理与设计", 31 October 2010, 东北财经大学出版社, pages: 270 * |
| 梁发云等: "高层建筑基础分析与设计 第2版", 31 August 2021, 机械工业出版社, pages: 366 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653177A (en) * | 2022-11-12 | 2023-01-31 | 广东南海国际建筑设计有限公司 | Construction method of cast-in-place reinforced concrete hollow floor |
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