CN108222254B - Bamboo-like structural steel pipe and prefabricated floor slab containing same - Google Patents
Bamboo-like structural steel pipe and prefabricated floor slab containing same Download PDFInfo
- Publication number
- CN108222254B CN108222254B CN201810132929.8A CN201810132929A CN108222254B CN 108222254 B CN108222254 B CN 108222254B CN 201810132929 A CN201810132929 A CN 201810132929A CN 108222254 B CN108222254 B CN 108222254B
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- China
- Prior art keywords
- steel pipe
- bamboo
- steel
- tubular body
- floor slab
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Classifications
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
-
- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/10—Load-carrying floor structures formed substantially of prefabricated units with metal beams or girders, e.g. with steel lattice girders
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2466—Details of the elongated load-supporting parts
Abstract
The invention provides a bamboo-like structural steel pipe which imitates a bamboo rod structure and is used for manufacturing a net rack of a building structure. The bamboo-like structural steel pipe has the advantages of light weight, high strength, bending resistance, easy manufacture, batch production and capability of replacing bamboo poles in areas where no bamboo is produced to manufacture building structural net racks. The invention also provides a prefabricated floor slab containing the bamboo-like structural steel pipes, wherein the prefabricated floor slab adopts the multi-layer staggered bamboo-like structural steel pipes with good strength and elastic modulus to replace steel bars as a supporting framework of the wall prefabricated slab, and the hollow structure of the steel pipes enables the wall slab to have good strength, rigidity, heat insulation, sound insulation and earthquake resistance effects.
Description
Technical Field
The invention relates to a steel pipe, in particular to a steel pipe for manufacturing a building structure net rack, and more particularly relates to a bamboo-like structure steel pipe which imitates a bamboo pole structure and is used for manufacturing the building structure net rack. The invention also relates to a prefabricated floor slab containing the bamboo-like structural steel pipe.
Background
At present, reinforced concrete floors adopted in China comprise cast-in-situ floors and precast floors, the cast-in-situ floors have good integrity, but site formwork is required, then concrete is poured, the construction period is long, the difficulty is high, the template loss is high, and the cost is high; the prefabricated floor slab does not need to support a formwork on site, the construction period is short, the construction cost is low, but the prefabricated components are heavy in weight and difficult to hoist, cracks are easy to generate at the splicing parts of the components, and the integrity is poor. In order to reduce the weight of the components, the hollow precast slabs are adopted in the floor slab, but the strength of the hollow precast slabs is often insufficient, and in order to strengthen the connection integrity between the floor slabs, a commonly adopted mode is a composite floor slab, and although the integrity of the floor slab and the composite layer of the composite floor slab is better, the connection between cast-in-place concrete and the precast slabs is usually not firm at the connection joint between the precast slabs, and the integrity is still worse. In view of the above problems, the applicant of the present invention has developed a lightweight, energy-saving and environment-friendly prefabricated floor slab, and filed an invention patent to the national intellectual property agency for the period of 6 months and 27 days in 2017, the application number is 201710501192.8, the floor slab adopts multi-layer staggered bamboo poles with good strength and elastic modulus to replace reinforcing steel bars as a supporting framework of the prefabricated floor slab, the weight is light, and the hollow structure of the bamboo poles enables the floor slab to have good strength, rigidity, heat insulation, sound insulation and vibration resistance effects, but the applicant has found that for areas where no bamboo is produced, a large number of bamboo poles needed for producing the prefabricated floor slab must be transported from the areas where the bamboo is produced, long-distance transportation is time-consuming and labor-consuming, and high transportation cost is required to greatly increase the production cost of the prefabricated floor slab, so that it is necessary to find a material imitating the structure of the bamboo poles to replace the bamboo poles.
Disclosure of Invention
In order to overcome the problems, the invention aims to provide a bamboo-like structural steel pipe which imitates a bamboo pole structure and is used for manufacturing a building structural net rack.
The invention also aims to provide a prefabricated floor slab containing the bamboo-like structural steel pipe.
In order to achieve the purpose, the bamboo-like structural steel pipe comprises a cylindrical tubular body, wherein pipe wall supporting pieces with X-shaped cross sections are arranged in the inner cavity of the tubular body at equal intervals, the distance between the center points of the two pipe wall supporting pieces is 3-6 times of the diameter of the tubular body, and sealing end covers are sleeved at the two ends of the tubular body.
In order to make the pipe wall support piece and the inner wall of the tubular body better contact and facilitate processing, the pipe wall support piece is formed by welding two disc-shaped members in opposite directions, the disc-shaped members comprise spherical crown-shaped bottom surfaces and annular side surfaces, the outer diameter of the annular side surfaces is equal to the inner diameter of the tubular body, and the pipe wall support piece is pushed and positioned to the inner cavity of the tubular body one by a propeller after being preformed.
The structure of the sealing end covers at the two ends of the tubular body is the same as that of a single disc-shaped member, and the spherical crown-shaped bottom surface of the disc-shaped member protrudes out of the end surface of the tubular body.
In order to increase the contact area between the pipe wall support and the inner wall of the pipe body and the bearing capacity of the pipe wall support, the radius of the spherical crown-shaped bottom surface of the disc-shaped member is 1-3 times of the diameter of the pipe body, and the height of the annular side surface of the disc-shaped member is 0.05-0.1 time of the diameter of the pipe body.
The bamboo-like structural steel pipe is characterized in that a tubular body is formed by welding a steel plate or strip steel after being curled and formed, the thickness of the steel plate or strip steel is 0.3-2mm, and the diameter of the tubular body is 5-15cm.
The invention also provides a precast floor slab containing the bamboo-like structural steel pipe, which comprises a supporting framework and a concrete layer wrapping the supporting framework, and is characterized in that: the support framework is a steel pipe layer, each steel pipe layer is formed by tiling a plurality of bamboo-like structural steel pipes which are equal in length and are arranged in parallel, the length directions of the steel pipes between two adjacent steel pipe layers are mutually perpendicular, the length direction of the steel pipe of the first steel pipe layer is parallel to the length direction of the precast slab, gaps between the steel pipes of the same layer and different layers are filled with concrete, steel wires are fixed on two sides of each steel pipe of the second steel pipe layer, and the steel wires encircle each steel pipe vertically opposite to the first steel pipe layer and the third steel pipe layer; the concrete layer of the left or/and right side of the precast floor slab is provided with a first horizontal connecting groove from beginning to end along the length direction of the first steel pipe layer steel pipe and the third steel pipe layer steel pipe, the left or/and right side of the precast floor slab is also provided with a vertical material injection groove communicated with the first horizontal connecting groove, and the other end of the material injection groove extends to the plate surface of the precast floor slab.
The concrete layer of the precast slab bottom surface of the precast slab at the position 10-40cm away from the front end surface and the rear end surface is provided with a second horizontal connecting groove from the beginning to the end along the length direction of a second steel pipe layer steel pipe, the top of the second horizontal connecting groove is embedded with a vertical injection pipe, one end of the vertical injection pipe is connected and communicated with the bottom surface of the groove, the other end of the vertical injection pipe penetrates through a gap between the steel pipe layers and extends to the plate surface of the precast slab, and the orifice of the injection pipe is provided with internal threads which can be connected with an outlet of a pump valve.
The distance between the steel pipes of each steel pipe layer of the precast floor slab is 5-10cm.
Compared with the existing precast floor slab, the bamboo-like structural steel pipe and the precast floor slab containing the steel pipe have the following advantages:
1. the bamboo-like structural steel pipe adopts an X-shaped pipe wall supporting piece arranged in the inner cavity of a tubular body, and sealing end covers are arranged at two ends of the tubular body, so that the steel pipe is light in weight, high in strength and bending-resistant.
2. The tubular body of the bamboo-like steel pipe is made by welding steel plates or strip steel after being curled and formed, and the pipe wall supporting piece is pushed by a propeller to be positioned in a pipe cavity after being formed, so that the bamboo-like steel pipe is easy to manufacture, can be produced in batches, and can be used for manufacturing a building structure net rack instead of the steel pipe in areas where no bamboo is produced.
3. The multi-layer staggered steel pipes with good strength and elastic modulus are adopted to replace steel bars to serve as a supporting framework of the prefabricated floor, so that the prefabricated floor is light in weight, and the hollow structure of the steel pipes enables the floor to have good strength, rigidity, heat insulation, sound insulation and earthquake resistance effects.
4. The prefabricated floor slab and the prefabricated floor slab can form a vertical material injection pipe and a first horizontal columnar cavity through a first horizontal connecting groove formed on the left side surface and the right side surface and a vertical material injection groove communicated with the first horizontal connecting groove, and a connecting column can be formed at the joint between the floor slabs by matching with a pump.
Drawings
Fig. 1 is a schematic structural view of a bamboo-like structural steel pipe of the present invention.
Fig. 2 is a schematic structural view of a tube wall support.
Fig. 3 is a schematic view of the structure of the prefabricated floor slab of the present invention.
Fig. 4 is a schematic structural view of bamboo-like structural steel pipes arranged in a prefabricated floor slab.
Fig. 5 is a cross-sectional view taken along line A-A of fig. 3.
Fig. 6 is a cross-sectional view of fig. 3 taken along line B-B.
Fig. 7 is a cross-sectional view of fig. 5 taken along line C-C.
Fig. 8 is a schematic structural view of a precast floor slab and a connection between precast floor slabs.
Detailed Description
As shown in fig. 1 and 2, the bamboo-like structural steel pipe comprises a cylindrical tubular body 1, pipe wall supporting pieces 2 with an X-shaped cross section and arranged at equal intervals in the inner cavity of the tubular body, and sealing end covers 3 positioned at two ends of the tubular body; the tubular body is formed by welding a steel plate or strip steel after being curled and formed, the thickness of the steel plate or strip steel is 0.3-2mm, and the diameter of the tubular body is 5-15cm; the pipe wall supporting piece is formed by oppositely welding two disc-shaped members, the disc-shaped members comprise a spherical crown-shaped bottom surface 21 and an annular side surface 22, the outer diameter of the annular side surface is equal to the inner diameter of the tubular body, the pipe wall supporting piece is pushed into the inner cavity of the tubular body one by a propeller after being preformed, and the distance between the center points of the two pipe wall supporting pieces is 3-6 times of the diameter of the tubular body; the seal end caps have the same structure as the single disc-shaped member and also comprise spherical crown-shaped bottom surfaces 31 and annular side surfaces 32, and the spherical crown-shaped bottom surfaces of the two seal end caps protrude from the end surfaces of the two ends of the tubular body.
As shown in fig. 3, 4, 5 and 6, the prefabricated floor slab of the invention comprises a supporting framework 4 and a concrete layer 5 wrapping the supporting framework, the supporting framework is three steel pipe layers, each steel pipe layer is formed by tiling a plurality of bamboo-like structure steel pipes which are equal in length and are arranged in parallel, the distance between the steel pipes of each steel pipe layer is 5-10cm, the length directions of the steel pipes between two adjacent steel pipe layers are mutually perpendicular, the length directions of the steel pipes 41 of the first steel pipe layer and the third steel pipe layer are parallel to the length direction of the prefabricated slab, the gaps between the steel pipes of the same layer and different layers are filled with concrete, steel wires 43 are fixed on two sides of each steel pipe 42 of the second steel pipe layer, and the steel wires encircle each steel pipe vertically opposite to the first steel pipe layer and the third steel pipe layer; the concrete layers on the left and right sides of the precast floor slab are provided with a first horizontal connecting groove 51 with a semicircular cross section from beginning to end along the length direction of the first steel pipe layer steel pipe, and the bottom surface of the precast floor slab, which is 10cm to 40cm away from the front end surface and the rear end surface of the precast floor slab, is provided with a second horizontal connecting groove 52 with a semicircular cross section from beginning to end along the length direction of the second steel pipe layer steel pipe; the left and right sides of the precast floor slab are also provided with vertical material injection grooves 53 which are communicated with the first horizontal connecting grooves and are semicircular in section, the other ends of the material injection grooves extend to the plate surface of the precast floor slab, as shown in fig. 7, the plate surface at the inner side of the vertical material injection grooves is also provided with mounting holes 54 for fixing pump valve fastening bolts; a vertical injection pipe 6 is buried in the concrete at the top of the second horizontal connecting groove, one end of the vertical injection pipe is connected and communicated with the bottom surface of the groove, the other end of the vertical injection pipe penetrates through gaps among steel pipes of all steel pipe layers and extends to the surface of the precast floor slab, and the orifice of the injection pipe is provided with an internal thread 31 which can be screwed with a slurry outlet of a pump valve.
As shown in fig. 8, when the ground width is large and more than two precast slabs are needed to be transversely spliced, a plurality of precast slabs can be placed in the same plane, the left side face or the right side face of one precast slab is close to the right side face or the left side face of the other precast slab, the first horizontal connecting grooves of two adjacent precast slabs and the notches of the material injection grooves are aligned and fixed to form a vertical material injection pipe 7 and a first transverse columnar cavity 8, then the grout outlet 91 of a pump valve 9 is inserted into the pipe orifice of the vertical material injection pipe and the fastening bolts 92 are fixed on mounting holes on two sides of the material injection pipe, the filling material is pumped into the first transverse columnar cavity from the vertical material injection pipe through a pump to form a first transverse connecting column, and after the first transverse connecting column is dried or molded, the two adjacent precast slabs form a firm whole.
The filler injected by the pump may be concrete, a thick polymer or a substance having expansibility.
Claims (7)
1. The bamboo-like structural steel pipe is characterized in that: the bamboo-like structural steel pipe comprises a cylindrical tubular body, wherein pipe wall supporting pieces with X-shaped cross sections are arranged in the inner cavity of the tubular body at equal intervals, the distance between the center points of the two pipe wall supporting pieces is 3-6 times of the diameter of the tubular body, and sealing end covers are sleeved at the two ends of the tubular body; the pipe wall support piece is formed by welding two disc-shaped members in opposite directions, the disc-shaped members comprise spherical crown-shaped bottom surfaces and annular side surfaces, and the outer diameter of the annular side surfaces is equal to the inner diameter of the tubular body; the spherical radius of the spherical bottom surface of the disc-shaped member is 1-3 times of the diameter of the tubular body, and the height of the annular side surface is 0.05-0.1 times of the diameter of the tubular body.
2. The bamboo-like structural steel pipe of claim 1, wherein: the pipe wall supporting pieces are advanced and positioned to the inner cavity of the tubular body one by the propeller after being preformed.
3. The bamboo-like structural steel pipe of claim 1, wherein: the structure of the sealing end covers at the two ends of the tubular body is the same as that of the dish-shaped component, and the spherical crown-shaped bottom surface of the dish-shaped component protrudes out of the end surface of the tubular body.
4. A bamboo-like structural steel pipe according to claim 3, wherein: the tubular body is formed by welding a steel plate or strip steel after curling and forming, the thickness of the steel plate or strip steel is 0.3-2mm, and the diameter of the tubular body is 5-15cm.
5. A precast floor slab comprising a supporting framework and a concrete layer wrapping the supporting framework, characterized in that: the support framework is a steel pipe layer, each steel pipe layer is formed by tiling a plurality of steel pipes which are equal in length and are arranged in parallel, the steel pipes are bamboo-like structural steel pipes as claimed in claim 1, the length directions of the steel pipes between two adjacent steel pipe layers are mutually perpendicular, the length direction of the steel pipe of the first steel pipe layer is parallel to the length direction of the precast slab, gaps between the steel pipes of the same layer and different layers are filled with concrete, steel wires are fixed on two sides of each steel pipe of the second steel pipe layer, and the steel wires encircle each steel pipe vertically opposite to the first steel pipe layer and the third steel pipe layer; the concrete layer of the left or/and right side of the precast floor slab is provided with a first horizontal connecting groove from beginning to end along the length direction of the first steel pipe layer steel pipe and the third steel pipe layer steel pipe, the left or/and right side of the precast floor slab is also provided with a vertical material injection groove communicated with the first horizontal connecting groove, and the other end of the material injection groove extends to the plate surface of the precast floor slab.
6. A precast floor plank according to claim 5, wherein: the precast floor slab is characterized in that a second horizontal connecting groove is formed in a concrete layer of the bottom surface of the precast slab, which is 10-40cm away from the front end surface and the rear end surface of the precast slab, along the length direction of a second steel pipe layer steel pipe from beginning to end, a vertical material injection pipe is buried at the top of the second horizontal connecting groove, one end of the vertical material injection pipe is connected and communicated with the bottom surface of the groove, the other end of the vertical material injection pipe penetrates through gaps among the steel pipe layers and extends to the surface of the precast floor slab, and an orifice of the material injection pipe is provided with internal threads which can be connected with an outlet of a pump valve.
7. A precast floor slab in accordance with claim 5 or 6, characterized in that: the distance between the steel pipes of each steel pipe layer of the precast floor slab is 5-10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810132929.8A CN108222254B (en) | 2018-02-09 | 2018-02-09 | Bamboo-like structural steel pipe and prefabricated floor slab containing same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810132929.8A CN108222254B (en) | 2018-02-09 | 2018-02-09 | Bamboo-like structural steel pipe and prefabricated floor slab containing same |
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| Publication Number | Publication Date |
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| CN108222254A CN108222254A (en) | 2018-06-29 |
| CN108222254B true CN108222254B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810132929.8A Active CN108222254B (en) | 2018-02-09 | 2018-02-09 | Bamboo-like structural steel pipe and prefabricated floor slab containing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108316542B (en) * | 2018-02-09 | 2023-09-15 | 王承辉 | Wall precast slab |
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| JP2010269584A (en) * | 2009-04-24 | 2010-12-02 | Sekisui Chem Co Ltd | Fireproof sound insulation pipe |
| ITTO20100072A1 (en) * | 2010-02-02 | 2011-08-03 | Sebastiano Bertero | COMPOSITE PANEL REINFORCED FOR CONSTRUCTION OF FLOORS, WALLS, BEAMS AND PILLARS |
| CN202672400U (en) * | 2012-01-12 | 2013-01-16 | 郭奇 | Novel bamboo type steel tube buckling restricting energy consumption support |
| CN204570674U (en) * | 2015-04-02 | 2015-08-19 | 宁波大学 | A kind of spill tooth pile tube |
| CN105171336A (en) * | 2012-06-28 | 2015-12-23 | 马新攀 | Assembly method for transverse diaphragms in building material tube |
| CN107299718A (en) * | 2017-06-27 | 2017-10-27 | 王承辉 | The precast floor slab and its mounting process of light weight energy-conserving and environment-protective |
| CN208039607U (en) * | 2018-02-09 | 2018-11-02 | 王承辉 | A kind of imitative bamboo structure steel pipe and the wall prefabricated board containing this steel pipe |
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2018
- 2018-02-09 CN CN201810132929.8A patent/CN108222254B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4006529A1 (en) * | 1990-03-02 | 1991-09-05 | Lorenz Kesting | Hollow ceiling in building - is formed by hollow concrete plates with parallel tubular recesses and reinforced concrete crossbeams |
| CN1793556A (en) * | 2002-04-30 | 2006-06-28 | 邱则有 | Stereoscopic bearing mould for reinforced concrete |
| CN2628847Y (en) * | 2003-06-24 | 2004-07-28 | 潘维周 | Bamboo joint type steel pipe |
| JP3132475U (en) * | 2006-06-30 | 2007-06-14 | 和之 杉本 | Reinforced concrete assembly house-LIVTXHOME with a combination of independent beam support columns, hollow columns, beams with umbilical holes, and polygonal ridge beams |
| JP2010269584A (en) * | 2009-04-24 | 2010-12-02 | Sekisui Chem Co Ltd | Fireproof sound insulation pipe |
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| CN105171336A (en) * | 2012-06-28 | 2015-12-23 | 马新攀 | Assembly method for transverse diaphragms in building material tube |
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| CN208039607U (en) * | 2018-02-09 | 2018-11-02 | 王承辉 | A kind of imitative bamboo structure steel pipe and the wall prefabricated board containing this steel pipe |
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| CN108222254A (en) | 2018-06-29 |
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