CN113982168A - Detachable superimposed floor slab made of UHPC - Google Patents
Detachable superimposed floor slab made of UHPC Download PDFInfo
- Publication number
- CN113982168A CN113982168A CN202111431304.XA CN202111431304A CN113982168A CN 113982168 A CN113982168 A CN 113982168A CN 202111431304 A CN202111431304 A CN 202111431304A CN 113982168 A CN113982168 A CN 113982168A
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- China
- Prior art keywords
- uhpc
- steel
- slab
- detachable
- preformed hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 85
- 239000010959 steel Substances 0.000 claims abstract description 85
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 11
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 239000004567 concrete Substances 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000009408 flooring Methods 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000009415 formwork Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
Images
Classifications
-
- 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
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
-
- 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
- E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
- E04B1/34315—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
-
- 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
- E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
- E04B1/34315—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
- E04B1/34326—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts mainly constituted by longitudinal elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/065—Light-weight girders, e.g. with precast parts
- E04C5/0653—Light-weight girders, e.g. with precast parts with precast parts
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The UHPC detachable composite floor slab provided by the invention comprises a UHPC prefabricated slab layer, a shear-resistant steel plate, detachable channel steel and a composite slab layer. The method is simple in processing and convenient to install. The problems of overlarge dead weight, overhigh cost, large-span cracking and transportation and hoisting safety of the prefabricated floor slab are solved simultaneously through a simple mode. During construction, fewer temporary supports are adopted, and a formwork is not required on site.
Description
Technical Field
The invention relates to the field of assembly type buildings, in particular to a UHPC detachable composite floor slab.
Background
The composite floor slab is a better structural form combining prefabrication and cast-in-place concrete. The precast slab and the upper cast-in-place concrete layer are combined into a whole and work together. The precast slab is used as a bottom die of a cast-in-place concrete layer, and a template is not required to be supported by the cast-in-place layer. The bottom surface of the prefabricated slab is smooth and flat, and after the slab joints are treated, the ceiling can not be plastered any more. The composite floor slab has the advantages of integrity, high rigidity, good crack resistance, no increase of reinforcing steel bar consumption, template saving and the like of a cast-in-place floor slab. Because the cast-in-place floor slab does not need to be provided with a formwork, and the large precast concrete partition boards can be simultaneously hoisted in the structural construction stage, the cast-in-place floor slab can be inserted into decoration engineering in advance, and the construction period of the whole engineering is shortened. At present, a large number of composite floor slabs are adopted in assembly type buildings, the thickness of a traditional composite floor slab is 5-8 cm, and a cast-in-place layer is 7-8 cm, so that the thickness of the traditional composite floor slab is increased by a large amount compared with that of a traditional cast-in-place floor slab by 10-12 cm, the self weight of the floor slab is too large, and the cost of the prefabricated floor slab is increased compared with that of the cast-in-place floor slab.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to reduce the thickness of a precast slab layer to 1.5-3 cm by utilizing the characteristics of UHPC (ultra high performance polycarbonate) such as compression resistance, rupture resistance and great improvement of tensile strength;
the invention aims to solve the problems of overlarge deflection and cracks of the plate bottom when the prefabricated plate layer has large span;
the invention also aims to solve the problem of safe transportation and lifting of the prefabricated slab layer.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a UHPC composite removable floor slab comprising: the composite slab comprises a UHPC precast slab layer, shear steel plates, detachable channel steel and a laminated slab layer, wherein the UHPC precast slab layer is provided with a plurality of shear steel plates which are connected with the UHPC precast slab layer through reinforcing steel bars; a laminated slab layer is arranged on the UHPC prefabricated slab layer, and the laminated slab layer is in-situ cast concrete; the detachable channel steel is connected to the shear steel plate through bolts.
And the UHPC prefabricated slab layer is provided with a steel bar net and additional steel bars.
Optionally, the shear resistant steel plate is provided with an in-plate preformed hole, an installation preformed hole and a hoisting preformed hole, wherein the steel mesh and the additional steel bars arranged on the UHPC precast slab layer pass through the in-plate preformed hole.
The detachable channel steel is provided with an installation preformed hole and a hoisting preformed hole, and the shear steel plate and the detachable channel steel connecting bolt respectively penetrate through the installation preformed hole and then are connected.
Optionally, the thickness of the UHPC precast slab is 15mm-30mm, the diameter of the steel bar net is 4-8mm, the distance is 50mm-100mm,
preferably, the additional steel bars have the same diameter as the mesh of steel bars.
The thickness of the shear steel plate is 4mm-10mm, the height is 50mm-100mm, the diameter of a preformed hole in the plate is 2mm larger than that of the reinforcing mesh and the additional reinforcing steel bar, the diameter of the mounting preformed hole is 8mm-12mm, and the diameter of the hoisting preformed hole is 25mm-50 mm.
The detachable channel steel is standard channel steel, the height of the detachable channel steel is 50mm-80mm, the diameter of the installation preformed hole is 8mm-12mm, and the diameter of the hoisting preformed hole is 25mm-50 mm.
Preferably, chamfering is carried out on the upper surface of the half side of the UHPC prefabricated plate layer, and after the lower part of the UHPC prefabricated plate layer is installed in place on site, pointing and leveling are carried out by using special mortar for UHPC. Can effectively prevent the bottom of the laminated slab from cracking.
A detachable superimposed floor slab of UHPC is provided, the processing and construction method is:
s1: the specified reinforcing steel bar mesh reinforcing steel bars and the additional reinforcing steel bars pass through preformed holes in the shear-resistant steel plate;
s2: placing the steel bars at the appointed position of the mould table, and forming a steel bar mesh sheet by adopting a welding or manual binding mode;
s3: using UHPC cloth and achieving a finished surface;
s4: connecting the detachable channel steel with the shear steel plate by using bolts;
s5: hoisting to a specified position on site;
s6: selecting whether to dismantle the detachable channel steel or not according to the field construction conditions;
s7: and (5) pouring concrete on the laminated slab layer.
The UHPC detachable composite floor slab provided by the invention is simple to process and convenient to install. The problems of overlarge dead weight, overhigh cost, large-span cracking and transportation and hoisting safety of the prefabricated floor slab are solved simultaneously through a simple mode. And fewer temporary supports are adopted during construction, no formwork is required on site, and due to the existence of detachable channel steel, the steel bar engineering in site hoisting and laminated slabs is simple and accurate, the construction speed is high, and the construction period is shortened. The ultra-high mechanical property and ultra-high durability of UHPC are utilized to replace a thicker concrete precast slab by a thinner precast bottom slab, which is beneficial to the force transmission between the slabs and can better solve the problem of slab joint cracking.
If the traditional composite floor slab adopts section steel such as channel steel, the cost is higher than that of the truss steel, but because the channel steel of the UHPC detachable composite floor slab provided by the invention can be detached and reused, the cost is lower than that of the UHPC truss steel.
Drawings
FIG. 1 is a schematic view of a UHPC removable composite floor slab without removable channel steel;
FIG. 2 is a schematic view of a UHPC removable composite floor slab with removable channel steel;
FIG. 3 is a schematic view of a shear steel plate;
FIG. 4 is a schematic view of the connection between the shear steel plate and the UHPC composite floor slab;
fig. 5 is a schematic view illustrating connection of a shear steel plate and a channel steel.
In the figure, a 1-UHPC prefabricated slab layer; 2-shear resistant steel plates; 3, detachable channel steel; 4-laminating the board layers; 5-reinforcing mesh; 6-additional steel bars; 7-reserving holes in the plate; 8-installing a preformed hole; 9-hoisting the preformed hole; 10-bolt.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
Referring to fig. 1, the UHPC detachable composite floor slab provided by the invention comprises a UHPC prefabricated slab layer 1, shear-resistant steel plates 2 and a composite slab layer 4, wherein the UHPC prefabricated slab layer 1 is provided with a plurality of shear-resistant steel plates 2, and the shear-resistant steel plates 2 are connected with the UHPC prefabricated slab layer 1 through reinforcing steel bars; and a laminated slab layer 4 is arranged on the UHPC prefabricated slab layer 1, and the laminated slab layer 4 is cast-in-place concrete on site.
Referring to fig. 2, the detachable channel steel 3 is bolted to the shear steel plate 2.
And the UHPC prefabricated slab layer 1 is provided with a steel bar net 5 and an additional steel bar 6.
Referring to fig. 3, the shear steel plate 2 is provided with an in-plate preformed hole 7, an installation preformed hole 8 and a hoisting preformed hole 9.
Referring to fig. 4, the reinforcement mesh 5 and the additional reinforcement 6 arranged on the UHPC precast slab layer 1 pass through the preformed hole 7 in the slab.
Referring to fig. 5, can dismantle channel-section steel 3 sets up installation preformed hole 8, hoist and mount preformed hole 9, and the steel sheet 2 that shears, can dismantle 3 connecting bolt of channel-section steel pass respectively and connect after self installation preformed hole 8.
In a disclosed embodiment of the invention, the thickness of the UHPC precast slab layer 1 is 15mm-30mm, the diameter of the reinforcing mesh 5 is 4-8mm, the distance between the reinforcing mesh and the reinforcing mesh is 50mm-100mm, and the diameter of the additional reinforcing steel 6 is the same as that of the reinforcing mesh 5.
In a disclosed embodiment of the invention, the shear steel plate 2 is 4mm-10mm thick and 50mm-100mm high, the diameter of a preformed hole 7 in the plate is 2mm larger than that of a steel mesh 5 and an additional steel bar 6, the diameter of an installation preformed hole 8 is 8mm-12mm, and the diameter of a hoisting preformed hole 9 is 25mm-50 mm.
In one disclosed embodiment of the invention, the detachable channel steel 3 is standard channel steel, the height is 50mm-80mm, the diameter of the installation preformed hole is 8mm-12mm, and the diameter of the hoisting preformed hole is 25mm-50 mm.
The invention discloses a processing and construction method which comprises the following steps:
s1: the specified reinforcing steel bar mesh reinforcing steel bars and the additional reinforcing steel bars pass through preformed holes in the shear-resistant steel plate;
s2: placing the steel bars at the appointed position of the mould table, and forming a steel bar mesh sheet by adopting a welding or manual binding mode;
s3: using UHPC cloth and achieving a finished surface;
s4: connecting the detachable channel steel with the shear steel plate by using bolts;
s5: hoisting to a specified position on site;
s6: selecting whether to dismantle the detachable channel steel or not according to the field construction conditions;
s7: and (5) pouring concrete on the laminated slab layer.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (8)
1. A UHPC composite removable floor slab comprising: UHPC precast slab layer (1), shear steel board (2), can dismantle channel-section steel (3) and coincide ply (4), its characterized in that: the UHPC prefabricated slab layer (1) is provided with a plurality of shear resistant steel plates (2), and the shear resistant steel plates (2) are connected with the UHPC prefabricated slab layer (1) through reinforcing steel bars; a laminated slab layer (4) is arranged on the UHPC prefabricated slab layer (1), and the laminated slab layer (4) is cast-in-place concrete on site;
the detachable channel steel (3) is connected to the shear steel plate (2) through bolts.
2. A UHPC structural flooring according to claim 1, characterised in that said UHPC pre-cast slabs (1) are provided with a mesh of reinforcement (5) and additional reinforcement (6).
3. A UHPC detachable laminated floor slab as claimed in claim 1, wherein the shear steel plate (2) is provided with a preformed hole (7) in the slab, a preformed hole for installation (8) and a preformed hole for hoisting (9), wherein the reinforcement mesh (5) and the additional reinforcement (6) arranged on the UHPC precast slab layer (1) pass through the preformed hole (7) in the slab.
4. The detachable UHPC laminated floor slab as claimed in claim 1, wherein the detachable channel steel (3) is provided with an installation preformed hole (8) and a hoisting preformed hole (9), and the shear steel plate (2) and the detachable channel steel (3) are connected after connecting bolts respectively pass through the installation preformed hole (8).
5. A UHPC structural laminated floor slab as claimed in claim 1, wherein the thickness of said UHPC precast slab layer (1) is 15mm-30mm, the diameter of said reinforcing mesh (5) is 4-8mm, the distance between said reinforcing mesh and said reinforcing mesh is 50mm-100mm, and the diameter of said additional reinforcing bar (6) is the same as that of said reinforcing mesh (5).
6. A UHPC detachable laminated floor slab as claimed in claim 1, wherein the shear steel plate (2) has a thickness of 4mm to 10mm and a height of 50mm to 100mm, the diameter of the preformed hole (7) in the slab is 2mm larger than the diameter of the reinforcing mesh (5) and the diameter of the additional reinforcing steel bar (6), the diameter of the installation preformed hole (8) is 8mm to 12mm, and the diameter of the hoisting preformed hole (9) is 25mm to 50 mm.
7. A UHPC demountable laminated floor slab as defined in claim 1, wherein said demountable channel steel (3) is standard channel steel, having a height of 50mm-80mm, installation allowance hole (8) having a diameter of 8mm-12mm, and hoisting allowance hole (9) having a diameter of 25mm-50 mm.
8. A UHPC composite floor slab with detachable structure as claimed in claim 1, which is fabricated by the following steps:
s1: the specified reinforcing steel bar mesh reinforcing steel bars and the additional reinforcing steel bars pass through preformed holes in the shear-resistant steel plate;
s2: placing the steel bars at the appointed position of the mould table, and forming a steel bar mesh sheet by adopting a welding or manual binding mode;
s3: using UHPC cloth and achieving a finished surface;
s4: connecting the detachable channel steel with the shear steel plate by using bolts;
s5: hoisting to a specified position on site;
s6: selecting whether to dismantle the detachable channel steel or not according to the field construction conditions;
s7: and (5) pouring concrete on the laminated slab layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111431304.XA CN113982168A (en) | 2021-11-29 | 2021-11-29 | Detachable superimposed floor slab made of UHPC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111431304.XA CN113982168A (en) | 2021-11-29 | 2021-11-29 | Detachable superimposed floor slab made of UHPC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113982168A true CN113982168A (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111431304.XA Pending CN113982168A (en) | 2021-11-29 | 2021-11-29 | Detachable superimposed floor slab made of UHPC |
Country Status (1)
| Country | Link |
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| CN (1) | CN113982168A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200927A (en) * | 2006-12-08 | 2008-06-18 | 邱则有 | Laminated slab |
| CN101487309A (en) * | 2009-02-09 | 2009-07-22 | 刘馨裕 | Precast slab for cast-in-situ floor and its construction method |
| CN101725202A (en) * | 2008-10-10 | 2010-06-09 | 中国二十冶建设有限公司 | Superimposed pouring procedure of high-rise building transfer floor beam plate |
| CN101769030A (en) * | 2009-12-24 | 2010-07-07 | 湖南大学 | Prefabricated concrete bottom plate with steel ribs |
| CN103572839A (en) * | 2013-11-05 | 2014-02-12 | 南京工业大学 | Mixed shear connector |
| US20150139719A1 (en) * | 2011-09-22 | 2015-05-21 | Jiangsu Transportation Research Institute Co., Ltd | Shear connector for corrugated sheet steel and concrete |
| CN113123504A (en) * | 2021-05-14 | 2021-07-16 | 重庆中科建筑科技(集团)有限公司 | Laminated floor slab with detachable additional rigidity device |
| CN216305078U (en) * | 2021-11-29 | 2022-04-15 | 易建网科技有限公司 | Detachable superimposed floor slab made of UHPC |
-
2021
- 2021-11-29 CN CN202111431304.XA patent/CN113982168A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200927A (en) * | 2006-12-08 | 2008-06-18 | 邱则有 | Laminated slab |
| CN101725202A (en) * | 2008-10-10 | 2010-06-09 | 中国二十冶建设有限公司 | Superimposed pouring procedure of high-rise building transfer floor beam plate |
| CN101487309A (en) * | 2009-02-09 | 2009-07-22 | 刘馨裕 | Precast slab for cast-in-situ floor and its construction method |
| CN101769030A (en) * | 2009-12-24 | 2010-07-07 | 湖南大学 | Prefabricated concrete bottom plate with steel ribs |
| US20150139719A1 (en) * | 2011-09-22 | 2015-05-21 | Jiangsu Transportation Research Institute Co., Ltd | Shear connector for corrugated sheet steel and concrete |
| CN103572839A (en) * | 2013-11-05 | 2014-02-12 | 南京工业大学 | Mixed shear connector |
| CN113123504A (en) * | 2021-05-14 | 2021-07-16 | 重庆中科建筑科技(集团)有限公司 | Laminated floor slab with detachable additional rigidity device |
| CN216305078U (en) * | 2021-11-29 | 2022-04-15 | 易建网科技有限公司 | Detachable superimposed floor slab made of UHPC |
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