CN111980256A - Self-insulation composite floor slab and construction method thereof - Google Patents
Self-insulation composite floor slab and construction method thereof Download PDFInfo
- Publication number
- CN111980256A CN111980256A CN202010824311.5A CN202010824311A CN111980256A CN 111980256 A CN111980256 A CN 111980256A CN 202010824311 A CN202010824311 A CN 202010824311A CN 111980256 A CN111980256 A CN 111980256A
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- prefabricated
- cast
- floor slab
- self
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- 238000009413 insulation Methods 0.000 title claims abstract description 38
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 114
- 239000004567 concrete Substances 0.000 claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 230000002787 reinforcement Effects 0.000 claims abstract description 32
- 239000002344 surface layer Substances 0.000 claims abstract description 12
- 239000011178 precast concrete Substances 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 4
- 239000011381 foam concrete Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000002955 isolation Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Images
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
- 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
- E04B5/17—Floor structures partly formed in situ
-
- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
-
- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
-
- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- 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
Abstract
The invention discloses a self-insulation composite floor slab and a construction method thereof, wherein the self-insulation composite floor slab comprises a prefabricated floor slab, and a sandwich insulation layer and a cast-in-place concrete layer are sequentially arranged above the prefabricated floor slab; and a shear key with low thermal conductivity is arranged between the prefabricated bottom plate layer and the cast-in-place concrete layer. The construction method comprises the following specific steps: 1) binding the prefabricated reinforcement framework and the reinforcement truss, installing shear keys on the prefabricated reinforcement framework, pouring concrete, and curing to obtain a prefabricated bottom plate layer; 2) laying a sandwich heat-insulating layer above the prefabricated bottom plate layer, wherein the steel bar truss is positioned in the sandwich heat-insulating layer, and the upper end of the shear key is exposed out of the sandwich heat-insulating layer; 3) transporting the precast concrete with the sandwiched heat-insulating layer to a site and hoisting the precast concrete in place; 4) binding a cast-in-place steel reinforcement framework at the upper end of the shear key, and pouring concrete to obtain a cast-in-place concrete layer; 5) and plastering the bottom of the board and constructing the surface layer of the board surface. The invention can not only ensure that the heat-insulating layer is not easy to be damaged and improve the use feeling of users, but also improve the heat-insulating effect.
Description
Technical Field
The invention relates to a heat-insulating composite floor slab, in particular to a self-heat-insulating composite floor slab and a construction method thereof.
Background
With the implementation of the development strategy of green buildings, the national requirements on building energy conservation are higher and higher, only the outer wall and the roof need to be insulated before, and the existing individual floor also needs to be insulated; therefore, each layer of household floor slab needs to be provided with a heat-insulating layer, and according to the difference of the arrangement positions of the heat-insulating layers, the existing construction method comprises the following two steps: 1) the heat-insulating layer is arranged above the structural layer; 2) the heat-insulating layer is arranged below the structural layer. However, when the insulating layer is above the structural layer, because the insulating layer is generally made of relatively loose and soft materials, after the surface layer is made on the insulating layer, the surface layer is easily stressed unevenly, cracks are generated, user experience is not good, and the insulating layer is easily damaged by users during secondary decoration of the building, so that the energy-saving effect of the building is influenced; when the heat-insulating layer is arranged below the structural layer, the heat-insulating layer is easy to damage, the energy-saving effect is influenced, the cohesiveness with the plastering layer is limited, and the plastering layer is easy to fall off. Therefore, the prior art has the problems that the heat insulation layer is easy to damage and the heat insulation effect is not ideal.
Disclosure of Invention
The invention aims to provide a self-insulation composite floor slab and a construction method thereof. The invention can not only ensure that the heat-insulating layer is not easy to be damaged and improve the use feeling of users, but also improve the heat-insulating effect.
The technical scheme of the invention is as follows: a self-insulation composite floor slab comprises a prefabricated floor slab, wherein a sandwich insulation layer and a cast-in-place concrete layer are sequentially arranged above the prefabricated floor slab; and a steel bar truss is arranged between the prefabricated bottom plate layer and the sandwich heat-insulating layer.
In the self-insulation composite floor slab, a shear key with low thermal conductivity is arranged between the prefabricated floor slab layer and the cast-in-place concrete layer.
In the self-insulation composite floor slab, the prefabricated floor slab layer comprises a prefabricated concrete structure, a prefabricated reinforcement framework is arranged in the prefabricated concrete structure, and a steel bar truss is arranged on the prefabricated reinforcement framework; the upper end of the steel bar truss is positioned in the sandwich heat-insulating layer.
In the self-insulation composite floor slab, the cast-in-place concrete layer comprises a cast-in-place concrete structure, and a cast-in-place steel reinforcement framework is arranged in the cast-in-place concrete structure.
In the foregoing self-insulation composite floor slab, the shear-resistant key is located between the prefabricated reinforcement cage and the cast-in-place reinforcement cage.
In the aforesaid self preservation temperature coincide floor, the shear key includes the shear key body, and both ends all are equipped with a plurality of reinforcing bar mounting grooves about the shear key body.
In the self-insulation composite floor slab, the shear keys are stainless steel shear keys.
In the self-insulation composite floor slab, a plastering layer is arranged below the prefabricated floor slab layer.
In the self-insulation composite floor slab, a surface layer is arranged above the cast-in-place concrete layer.
In the self-insulation composite floor slab, the sandwich insulation layer is made of foam concrete.
A construction method of a self-insulation composite floor slab comprises the following specific steps:
1) binding the prefabricated reinforcement framework and the reinforcement truss, installing shear keys on the prefabricated reinforcement framework, pouring concrete, and curing to obtain a prefabricated bottom plate layer;
2) laying a sandwich heat-insulating layer above the prefabricated bottom plate layer, wherein the steel bar truss is positioned in the sandwich heat-insulating layer, and the upper end of the shear key is exposed out of the sandwich heat-insulating layer;
3) transporting the precast concrete with the sandwiched heat-insulating layer to a construction site, and hoisting the precast concrete in place;
4) binding a floor slab cast-in-place steel reinforcement framework at the upper end of the shear key, and pouring concrete to obtain a cast-in-place concrete layer;
5) and plastering the bottom of the board and constructing the surface layer of the board surface.
Compared with the prior art, the sandwich heat-insulating layer is arranged between the prefabricated bottom plate layer and the cast-in-place concrete layer, and is creatively arranged inside the composite floor slab, so that the sandwich heat-insulating layer is not easily damaged for the second time, the use feeling of a user is improved (including the surface layer and the plastering layer which are not easy to crack) and the integral heat-insulating performance of the composite floor slab is improved on the premise of ensuring the structural strength of the composite floor slab. Meanwhile, the height of the steel bar truss is reduced, and the steel bar truss is arranged in the sandwich heat-insulating layer, so that the heat transfer between the prefabricated bottom plate layer and the cast-in-place concrete layer is reduced; through set up the shear key of low heat conductivity between prefabricated bottom plate layer and cast-in-place concrete layer, through the structure of rational design shear key, make it can satisfy the biography power requirement between prefabricated bottom plate and the cast in situ concrete to the existence of cold and hot bridge of reduction that can be very big, and then realize improving the purpose of thermal insulation performance. In addition, the upper end and the lower end of the shear key are provided with the steel bar installation grooves, so that the shear key can be fully combined with the steel bar framework, and the integral structural strength is improved. The self-insulation composite floor slab prepared by the invention has better sound insulation and vibration isolation performance than common floor slabs, and can also be used for parts with high requirements on sound insulation and vibration isolation. In conclusion, the invention can not only ensure that the heat-insulating layer is not easy to damage and improve the use feeling of users, but also improve the heat-insulating effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural view of a prefabricated steel armature;
FIG. 3 is a structural view of a prefabricated floor layer;
FIG. 4 is a structural view of a sandwiched insulation layer;
FIG. 5 is a structural view of a prefabricated steel armature;
fig. 6 is a structural view of a shear key.
The labels in the figures are: 1-prefabricated bottom plate layer, 2-sandwich heat insulation layer, 3-cast-in-place concrete layer, 4-shear key, 101-prefabricated concrete structure, 102-prefabricated reinforcement cage, 103-steel bar truss, 301-cast-in-place concrete structure, 302-cast-in-place reinforcement cage, 401-shear key body, 402-steel bar installation groove, 5-plastering layer and 6-surface layer.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. A self-insulation composite floor slab is shown in figures 1 to 6 and comprises a prefabricated floor slab 1, wherein a sandwich insulation layer 2 and a cast-in-place concrete layer 3 are sequentially arranged above the prefabricated floor slab 1; (ii) a And a steel bar truss 103 is arranged between the prefabricated bottom plate layer 1 and the sandwich heat-insulating layer 2.
And a shear key 4 with low thermal conductivity is arranged between the prefabricated bottom plate layer 1 and the cast-in-place concrete layer 3.
The prefabricated floor layer 1 comprises a prefabricated concrete structure 101, a prefabricated reinforcement cage 102 is arranged in the prefabricated concrete structure 101, and a steel bar truss 103 is arranged on the prefabricated reinforcement cage 102; the upper end of the steel bar truss 103 is positioned in the sandwich insulating layer 2.
The cast-in-place concrete layer 3 comprises a cast-in-place concrete structure 301, and a cast-in-place steel reinforcement framework 302 is arranged in the cast-in-place concrete structure 301.
The shear keys 4 are located between the prefabricated steel reinforcement cage 102 and the cast-in-place steel reinforcement cage 302.
The shear key 4 comprises a shear key body 401, and a plurality of steel bar installation grooves 402 are formed in the upper end and the lower end of the shear key body 401.
The shear key 4 is a stainless steel shear key.
A plastering layer 5 is arranged below the prefabricated bottom plate layer 1.
A surface layer 6 is arranged above the cast-in-place concrete layer 3.
The sandwich heat-insulating layer 2 is made of foam concrete.
The thickness of the plastering layer is 10mm, the thickness of the prefabricated bottom plate layer is 60mm, the thickness of the sandwich heat-insulating layer is 30mm, the thickness of the cast-in-place concrete layer is 70mm, and the thickness of the surface layer is 30 mm.
A construction method of a self-insulation composite floor slab comprises the following specific steps:
1) binding the prefabricated reinforcement framework and the reinforcement truss, installing shear keys on the prefabricated reinforcement framework, pouring concrete, and curing to obtain a prefabricated bottom plate layer;
2) laying a sandwich heat-insulating layer above the prefabricated bottom plate layer, wherein the steel bar truss is positioned in the sandwich heat-insulating layer, and the upper end of the shear key is exposed out of the sandwich heat-insulating layer;
3) transporting the precast concrete with the sandwiched heat-insulating layer to a construction site, and hoisting the precast concrete in place;
4) binding a floor slab cast-in-place steel reinforcement framework at the upper end of the shear key, and pouring concrete to obtain a cast-in-place concrete layer;
5) and plastering the bottom of the board and constructing the surface layer of the board surface.
Claims (10)
1. The utility model provides a self preservation temperature coincide floor which characterized in that: the concrete floor comprises a prefabricated floor layer (1), wherein a sandwich heat-insulating layer (2) and a cast-in-place concrete layer (3) are sequentially arranged above the prefabricated floor layer (1); and a steel bar truss (103) is arranged between the prefabricated bottom plate layer (1) and the sandwich heat-insulating layer (2).
2. The self-insulation composite floor slab as claimed in claim 1, wherein: and a shear key (4) with low thermal conductivity is arranged between the prefabricated bottom plate layer (1) and the cast-in-place concrete layer (3).
3. The self-insulation composite floor slab as claimed in claim 2, wherein: the prefabricated floor layer (1) comprises a prefabricated concrete structure (101), and a prefabricated reinforcement cage (102) is arranged in the prefabricated concrete structure (101); the bottom of the steel bar truss (103) is connected with the prefabricated steel bar framework (102), and the upper end of the steel bar truss (103) is positioned in the sandwich heat-insulating layer (2).
4. The self-insulation composite floor slab as claimed in claim 3, wherein: the cast-in-place concrete layer (3) comprises a cast-in-place concrete structure (301), and a cast-in-place steel reinforcement framework (302) is arranged in the cast-in-place concrete structure (301).
5. The self-insulation composite floor slab as claimed in claim 4, wherein: the shear key (4) is positioned between the prefabricated reinforcement cage (102) and the cast-in-place reinforcement cage (302).
6. The self-insulation composite floor slab as claimed in claim 2, wherein: the shear key (4) comprises a shear key body (401), and a plurality of steel bar installation grooves (402) are formed in the upper end and the lower end of the shear key body (401).
7. The self-insulation composite floor slab as claimed in claim 2, wherein: the shear key (4) is a stainless steel shear key.
8. The self-insulation composite floor slab as claimed in claim 1, wherein: a plastering layer (5) is arranged below the prefabricated floor layer (1); a surface layer (6) is arranged above the cast-in-place concrete layer (3).
9. The self-insulation composite floor slab as claimed in claim 1, wherein: the sandwich heat-insulating layer (2) is made of foam concrete.
10. The construction method of the self-insulation composite floor slab is characterized by comprising the following specific steps of:
1) binding the prefabricated reinforcement framework and the reinforcement truss, installing shear keys on the prefabricated reinforcement framework, pouring concrete, and curing to obtain a prefabricated bottom plate layer;
2) laying a sandwich heat-insulating layer above the prefabricated bottom plate layer, wherein the steel bar truss is positioned in the sandwich heat-insulating layer, and the upper end of the shear key is exposed out of the sandwich heat-insulating layer;
3) hoisting the precast concrete paved with the sandwich heat-insulating layer in place;
4) binding a floor slab cast-in-place steel reinforcement framework at the upper end of the shear key, and pouring concrete to obtain a cast-in-place concrete layer;
5) and plastering the bottom of the board and constructing the surface layer of the board surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010824311.5A CN111980256B (en) | 2020-08-17 | 2020-08-17 | Self-insulation composite floor slab and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010824311.5A CN111980256B (en) | 2020-08-17 | 2020-08-17 | Self-insulation composite floor slab and construction method thereof |
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| Publication Number | Publication Date |
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| CN111980256A true CN111980256A (en) | 2020-11-24 |
| CN111980256B CN111980256B (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962843A (en) * | 2021-02-18 | 2021-06-15 | 重庆正扬泰新材料有限公司 | Construction method for assembling construction sound insulation heat preservation form-removal-free concrete floor |
| CN112976252A (en) * | 2021-02-18 | 2021-06-18 | 重庆正扬泰新材料有限公司 | Production method of sound insulation and heat preservation form-removal-free concrete floor slab capable of being assembled for construction |
| CN113982166A (en) * | 2021-09-29 | 2022-01-28 | 山东经典重工集团股份有限公司 | Prefabricated coincide floor of assembly system |
| CN114658151A (en) * | 2022-03-25 | 2022-06-24 | 中建一局集团第三建筑有限公司 | Bottom plate heat-preservation ceiling and integrated construction method thereof |
| CN114673288A (en) * | 2022-05-05 | 2022-06-28 | 北京工业大学 | Prefabricated ceramsite foam concrete composite floor slab with truss ribs |
| CN115198947A (en) * | 2022-08-04 | 2022-10-18 | 塔里木大学 | Laminated floor slab |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962843A (en) * | 2021-02-18 | 2021-06-15 | 重庆正扬泰新材料有限公司 | Construction method for assembling construction sound insulation heat preservation form-removal-free concrete floor |
| CN112976252A (en) * | 2021-02-18 | 2021-06-18 | 重庆正扬泰新材料有限公司 | Production method of sound insulation and heat preservation form-removal-free concrete floor slab capable of being assembled for construction |
| CN113982166A (en) * | 2021-09-29 | 2022-01-28 | 山东经典重工集团股份有限公司 | Prefabricated coincide floor of assembly system |
| CN113982166B (en) * | 2021-09-29 | 2023-12-08 | 经典重工集团股份有限公司 | Prefabricated composite floor slab of assembly system |
| CN114658151A (en) * | 2022-03-25 | 2022-06-24 | 中建一局集团第三建筑有限公司 | Bottom plate heat-preservation ceiling and integrated construction method thereof |
| CN114673288A (en) * | 2022-05-05 | 2022-06-28 | 北京工业大学 | Prefabricated ceramsite foam concrete composite floor slab with truss ribs |
| CN115198947A (en) * | 2022-08-04 | 2022-10-18 | 塔里木大学 | Laminated floor slab |
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| CN111980256B (en) | 2021-08-24 |
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Effective date of registration: 20220712 Address after: 310028 building 43, 148 Tianmushan Road, Xihu District, Hangzhou City, Zhejiang Province Patentee after: THE ARCHITECTURAL DESIGN & RESEARCH INSTITUTE OF ZHEJIANG UNIVERSITY Co.,Ltd. Patentee after: Zhejiang University Address before: 310028 building 43, 148 Tianmushan Road, Xihu District, Hangzhou City, Zhejiang Province Patentee before: THE ARCHITECTURAL DESIGN & RESEARCH INSTITUTE OF ZHEJIANG UNIVERSITY Co.,Ltd. |