CN112459302A - Non-bearing fireproof partition wall for scissor stairs, scissor stairs and construction method of non-bearing fireproof partition wall - Google Patents
Non-bearing fireproof partition wall for scissor stairs, scissor stairs and construction method of non-bearing fireproof partition wall Download PDFInfo
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- CN112459302A CN112459302A CN202011461740.7A CN202011461740A CN112459302A CN 112459302 A CN112459302 A CN 112459302A CN 202011461740 A CN202011461740 A CN 202011461740A CN 112459302 A CN112459302 A CN 112459302A
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- 238000005192 partition Methods 0.000 title claims abstract description 87
- 238000010276 construction Methods 0.000 title claims abstract description 54
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 34
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 17
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 10
- 230000002787 reinforcement Effects 0.000 claims description 10
- 238000005266 casting Methods 0.000 claims description 4
- 239000002356 single layer Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000004567 concrete Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 235000000396 iron Nutrition 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 240000005002 Erythronium dens canis Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 210000003464 cuspid Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a non-load-bearing fireproof partition wall for a scissor stair, the scissor stair and a construction method thereof, wherein the partition wall is of a cast-in-place reinforced concrete structure with a single-layer reinforcing mesh; the single-layer reinforcing mesh adopts 8@200X200 or similar bidirectional reinforcing mesh sheets, and the thickness of the partition wall is less than or equal to 100 mm; the wall body of the partition wall is carried on one stair in the scissor ladder, and the stair carrying the partition wall is provided with a widening section; the scissors stair is provided with the partition wall, and in the structure that the partition wall is carried on one stair, the reinforcing mesh is fixedly connected with the stair reinforcing steel bars or the stair reinforcing mesh; in the construction method of the scissor stairs, the partition wall is poured by adopting an aluminum alloy mold. The partition wall has the beneficial effects that the partition wall has good structural stability, is safe to use and has long service life; the scissors stair adopting the partition wall has the same beneficial effects as described above; the stair construction method can effectively improve the construction efficiency and save the construction cost.
Description
Technical Field
The invention relates to the building engineering technology, in particular to a non-bearing fireproof partition wall for a scissor stair, the scissor stair and a construction method thereof.
Background
Scissor type stair is a twin stair structure, and every layer has two access & exit to realize the fire control stair that can go up and can go down again, and its benefit is that the output volume multiplies, guarantees the unexpected output volume of fleing. Scissor stairs are commonly used in civil buildings, two stairs being separated by a partition wall, the main function of which is fire protection. Because the stair partition wall only needs to possess the fire prevention function, in the traditional consciousness of building trade, this type of wall body is handled according to brickwork wall or board-like wall mostly from the design to the construction, as long as satisfy fire behavior's fire rating or fire-resistant time requirement can. Therefore, the concrete cast-in-place structure cannot be embodied on the design drawing, the wall body cannot be poured in the construction process, and the masonry or the plate wall installation is carried out only after the construction of the cast-in-place structure comprising the stairs and the like is finished. Therefore, the problems of low building construction efficiency and long construction period are caused, and when the fireproof plate is adopted, the lower end of the wall body needs to be made into a dog-tooth shape matched with the stair steps, so that material waste and construction cost increase are inevitably caused. In the existing civil buildings, especially in the development process of commercial houses, on the premise of ensuring the quality and safety of the buildings, the law that the market is preempted is to shorten the construction period and reduce the construction cost. Therefore, the existing partition wall needs to be improved, the plastering process and the gap fireproof blocking process can be omitted, the construction efficiency is greatly improved, and the construction cost is reduced.
Disclosure of Invention
The invention aims to overcome the defect that the partition wall for the scissor ladder in the prior art is of a non-cast-in-place structure, and provides a non-bearing fireproof partition wall for the scissor ladder, which is of a cast-in-place reinforced concrete structure with a single-layer reinforcing mesh and is convenient to cast in the construction process of a building structure. Thereby improving the construction efficiency and reducing the construction cost. The second purpose of the invention is to provide a scissors stair with the partition wall, so as to shorten the construction period and reduce the construction cost. The third purpose of the invention is to provide a construction method of the scissors stair, so as to ensure the structural stability, shorten the construction period and reduce the construction cost.
In order to achieve the first object, the invention adopts the following technical scheme.
A non-bearing fireproof partition wall for scissors stairs is used for isolating two stairs of scissors stairs on the same floor, and is of a cast-in-place reinforced concrete structure with a single-layer reinforcing mesh.
The partition wall adopting the technical scheme has the advantages that due to the adoption of the cast-in-place structure, the detailed record and embodiment can be carried out on the design drawing of the building structure, so that the construction can be completed together with the building structure of the cast-in-place part in a cast-in-place mode during construction according to the drawing, the construction after pouring or the installation according to the plate wall mode is not needed, the construction efficiency can be effectively improved, and the construction cost is reduced; compared with the masonry partition wall in the traditional method, the plastering process is omitted, the subsequent fireproof plugging by using incombustible materials caused by gaps of the masonry is avoided, and masonry beams of each layer are also saved; compared with a fireproof board wall, the material waste can be reduced, and the energy-saving and environment-friendly requirements are met.
Preferably, the reinforcing mesh adopts a bidirectional reinforcing mesh sheet with any one specification of 6@200X200, 6@300X300, 8@200X200 and 8@300X 300. The method is selected according to the principle of purchasing convenience and low comprehensive cost. In principle, the smaller the diameter of the steel bar is, the larger the distance between adjacent steel bars is, and the smaller the rigidity of the steel bar mesh is, so that the positioning and fixing of the steel bar mesh before pouring are relatively difficult, certain influence on the construction efficiency can be brought, and the material cost is lower.
Preferably, the wall body of the partition wall is poured by adopting an aluminum alloy template, and the thickness of the wall body is less than or equal to 100 mm. Reasonable thickness setting and reduction fair share area to utilize aluminum alloy mould technology, can prevent to appear the mould explosion problem like traditional wooden model, improve the yield, and reduce work such as plastering cement mortar on the wall in later stage. The partition wall is actually arranged according to the requirements specified by fire-fighting specifications, so long as the functional requirement of fire prevention is met within 1 hour, and the concrete wall with the thickness of only 60mm can meet the fire-proof requirement, but because of the limitation of the cast-in-place process level, for example, the concrete vertical wall with the thickness of 60mm and 80mm smaller than 100mm is not easy to pour and vibrate tightly during construction, the specification with the thickness of 100mm is generally adopted as the preference. The wall thickness specification referred to in the application refers to nominal size, and the actual size has deviation according to the industry standard. These nominal dimensions include 60mm, 80mm and 100mm, and also include any natural number of thickness dimensions in millimeters between 60mm and 100 mm.
Preferably, the wall of the partition wall is mounted on one of the scissors ladders, and the staircase on which the partition wall is mounted has a widened section. The weight of the wall body is transferred to the stairwell shear wall or the bearing wall of the reinforced concrete structure through the stairs, so that the gravity of the partition walls is unloaded layer by layer, the multilayer partition walls are eliminated from being vertically stacked in the gravity, and the structural stability is improved. The weight of the stairs can be unloaded on the shear wall or the bearing wall of the corresponding layer by utilizing the stair end beams at the two ends of the stairs, and the weight of the stairs is also unloaded on the shear wall or the bearing wall through the middle beam in the scissor ladder with the middle beam.
In order to achieve the second object, the invention adopts the following technical scheme.
A scissor ladder comprises two ladders of the scissor ladder and a partition wall arranged between the two ladders, wherein the partition wall is composed of a non-load-bearing fireproof partition wall for realizing the first purpose.
By adopting the scissor type staircase in the technical scheme, the fireproof partition walls between the two staircases are arranged into the non-load-bearing reinforced concrete structure, so that the cast-in-place structure is embodied on the design drawing of a building, and the construction is completed together with the building structure of the cast-in-place part in a cast-in-place mode during construction according to the construction drawing, and the building after casting or the installation according to the plate wall mode is not needed, so that the construction efficiency can be effectively improved, and the construction cost is reduced; compared with a scissor stair with a fireproof board wall, the material waste can be reduced, and the energy-saving and environment-friendly requirements are met. .
Preferably, the partition wall is carried in the structure of one of the stairs, and the reinforcing mesh is fixedly connected with the stair reinforcing bars or the stair reinforcing mesh. The fixing mode comprises that the steel bars of the two are welded through a lap joint part, or are welded together by means of lap joints of steel plates, flat irons or round bars and the like; also includes binding and fixing together with iron wires. The structure form is flexible, and the connection is reliable, the operation is convenient, and the construction cost is low.
Further, the stairs carrying the partition wall and the partition wall are synchronously poured by adopting aluminum alloy templates. So that the concrete parts of the two are combined more firmly, and the use safety and the service life are ensured.
Preferably, the scissors intersection of the two stairs is further provided with an intermediate beam, the intermediate beam forms a support for the two stairs in the middle section of the stairs, and the intermediate beam is carried on a stair well shear wall or a bearing wall of a reinforced concrete structure. The stair weight can be unloaded on the shear wall or the bearing wall of the corresponding layer through the stair end beams at the two ends of the stair, so that the stair weight is completely transferred to the bottom floor, and the structural stability is improved.
In order to achieve the third object, the invention adopts the following technical scheme.
A scissor stair construction method adopts an aluminum alloy template to pour a non-bearing fireproof partition wall in the scissor stair for realizing the first purpose independently; or the partition wall and the two stairs in the scissors stair for realizing the second purpose are poured by adopting an aluminum alloy template.
By adopting the construction method of the technical scheme, the non-bearing fireproof partition wall is poured by using the aluminum alloy mold; or the partition wall and the two stairs in the scissors stairs are poured by using an aluminum alloy mold. The characteristics of high speed, high structural strength and smooth and flat surface of the aluminum alloy mold combination can be fully exerted to form a flat and smooth wall surface and a flat and smooth stair surface, so that the mold explosion phenomenon when a wood mold is adopted can be effectively avoided, the later plastering treatment is reduced or saved, the yield is improved, the construction efficiency is improved, and the construction cost is reduced.
Preferably, in the scissors stairway in which the partition wall is mounted on one of the scissors stairways, the partition wall and the stairway are cast simultaneously, and the reinforcing mesh of the partition wall is fixedly connected with the stair reinforcing mesh or the stair reinforcing mesh before casting. The concrete part that the synchronous construction can make the two combines more firmly, and the reinforcing bar net and stair reinforcing bar or stair reinforcing bar net fixed connection of partition wall make the steel reinforcement skeleton of the two also fixed connection together, do benefit to the overall structure intensity that improves stair and partition wall, ensure safety in utilization and life. The space between the reinforcing mesh and the inner wall of the wall formwork is at least 25mm, so that the metal framework is protected by concrete, and the service life is prolonged; the fixed connection of the reinforcing mesh of the partition wall and the stair reinforcing steel bar or the stair reinforcing mesh comprises iron wire bundling, lap welding and the like; the lap welding can directly lap the two steel bars and also can lap the steel bars by means of third components such as steel plates, flat irons or round bars.
The partition wall has the advantages of good structural stability, safe use, long service life and contribution to reducing the shared area; the scissors stair adopting the partition wall has the same beneficial effects as described above; the stair construction method can effectively improve the construction efficiency and save the construction cost. The partition wall is taken as a building main body structure and is incorporated into the building structure design, and the partition wall and the shear ladder are constructed synchronously in the construction, so that the hidden danger of the mold explosion of the wood mold is eliminated, the low construction efficiency caused by a large amount of plastering due to later-period masonry is reduced, and the consumption of cement mortar materials is reduced; compared with a plate wall structure, the problem of material waste caused by the canine-tooth shape of the lower end can be avoided, and the requirements of energy conservation and environmental protection are met.
Drawings
Fig. 1 is a schematic front view of the structure of a staircase with non load-bearing fire partitions according to the invention.
The drawing is also used to illustrate the construction method of the present invention.
Detailed Description
The present invention is further described with reference to the accompanying drawings, but the invention is not limited thereby within the scope of the described embodiments.
Example 1, referring to fig. 1, a non-load-bearing fire barrier for scissors stairs, which is used to separate two stairs of scissors stairs of the same floor, has a cast-in-place reinforced concrete structure with a single-layered mesh reinforcement 1.
Wherein, the reinforcing mesh 1 adopts an 8@200X200 bidirectional reinforcing mesh. In addition, the wall body of the partition wall is poured by adopting an aluminum alloy template, and the thickness of the wall body is less than or equal to 100 mm; in addition, the wall body of the partition wall is carried on one stair in the scissors ladder, and the stair carrying the partition wall is provided with a widened section.
In this embodiment, the mesh reinforcement 1 can also adopt any one of the specifications of 6@200X200, 6@300X300 and 8@300X 300.
In this embodiment, because the partition wall is actually set according to the requirements specified by the fire protection code, as long as the functional requirement of fire prevention is achieved within 1 hour, only the concrete wall with the thickness of 60mm can meet the fire prevention requirement, but because of the limitation of the cast-in-place process level, for example, the concrete vertical wall with the thickness of 60mm and 80mm smaller than 100mm is not easy to pour and vibrate tightly during construction, so the specification with the thickness of 100mm is generally adopted as the best. Wherein, wall thickness specification all indicates nominal size, and actual size has the deviation that exists according to the trade standard. These nominal dimensions include 60mm, 80mm and 100mm, and also include any natural number of thickness dimensions in millimeters between 60mm and 100 mm.
Example 2, with reference to fig. 1, a scissors ladder comprising two stairs of scissors ladder and a partition wall 2 arranged between the two stairs, said partition wall 2 being constituted by the non load-bearing fire partition of example 1.
Wherein, in the structure that the partition wall 2 is carried on one stair 3, the reinforcing mesh 1 is fixedly connected with the stair reinforcing bar or the stair reinforcing mesh of the stair 3. The fixing mode comprises that the steel bars of the two are welded through a lap joint part, or are welded together by means of lap joints of steel plates, flat irons or round bars and the like; also includes binding and fixing together with iron wires. The stairs 3 carrying the partition wall 2 and the partition wall 2 are synchronously poured by adopting aluminum alloy templates. And the scissors intersection of the two stairs is also provided with an intermediate beam 4, the intermediate beam 4 forms a support for the two stairs in the middle section of the stairs, and the intermediate beam 4 is carried on a stair well shear wall or a bearing wall with a reinforced concrete structure.
In the embodiment 3, referring to fig. 1, a scissor stair construction method adopts an aluminum alloy template to independently pour a non-load-bearing fire partition wall in the scissor stair in the embodiment 1.
In the embodiments 3 and 4, in the scissor stairs with the partition wall carried on one of the scissor stairs, the partition wall and the stairs are cast synchronously, and the reinforcing mesh 1 of the partition wall is fixedly connected with the stair reinforcing mesh or the stair reinforcing mesh before casting.
Wherein, the distance between the reinforcing mesh 1 and the inner wall of the wall formwork is at least 25 mm; the fixed connection of the reinforcing mesh 1 of the partition wall 2 and the stair reinforcing bar of the stair 3 carrying the partition wall 2 or the stair reinforcing mesh comprises iron wire bundling, lap welding and the like; the lap welding can directly lap the two steel bars and also can lap the steel bars by means of third components such as steel plates, flat irons or round bars.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a scissors stair are with non-bearing fire compartment wall which characterized in that for keeping apart two stairs of the scissors ladder of same floor, it is the cast-in-place reinforced concrete structure who has individual layer reinforcing bar net (1).
2. A partition as claimed in claim 1 wherein the mesh reinforcement (1) is a single ply mesh of any one of the specifications 6@200X200, 6@300X300, 8@200X200 and 8@300X 300.
3. The partition wall of claim 1, wherein the wall body of the partition wall is cast by adopting aluminum alloy templates, and the thickness of the wall body is less than or equal to 100 mm.
4. A partition as claimed in any one of claims 1 to 3 wherein the wall of the partition is mounted on a staircase in the scissor ladder, the staircase on which the partition is mounted having a widened section.
5. A scissor ladder comprising two stairs of a scissor ladder and a partition wall arranged between the two stairs, characterized in that the partition wall is formed by a non-load-bearing fire partition wall as claimed in any one of claims 1 to 4.
6. Stair according to claim 5, characterised in that the mesh reinforcement (1) is fixedly connected to the stair reinforcement or stair mesh reinforcement of the stair in a structure where the partition is to be placed on one of the stairs.
7. The stair of claim 6, wherein the stair with the partition and the partition are cast simultaneously by aluminum alloy templates.
8. The stair of claim 5, wherein the scissors intersection of the two stairs is further provided with an intermediate beam, the intermediate beam forms a support for the two stairs in the middle section of the stair, and the intermediate beam is carried on a stair well shear wall or a bearing wall of a reinforced concrete structure.
9. A scissor stair construction method is characterized in that an aluminum alloy template is adopted to independently pour a non-bearing fireproof partition wall in the scissor stair according to any one of claims 5 to 8; or, the partition wall and the two stairs in the scissors stair of any one of claims 5 to 8 are cast by adopting an aluminum alloy template.
10. Construction method according to claim 9, characterized in that in a scissor ladder, where the partition wall is mounted on one of the scissor ladders, the partition wall and the ladder are cast simultaneously, and before casting, the reinforcement mesh (1) of the partition wall is fixedly connected with the ladder reinforcement or the ladder reinforcement mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011461740.7A CN112459302A (en) | 2020-12-09 | 2020-12-09 | Non-bearing fireproof partition wall for scissor stairs, scissor stairs and construction method of non-bearing fireproof partition wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011461740.7A CN112459302A (en) | 2020-12-09 | 2020-12-09 | Non-bearing fireproof partition wall for scissor stairs, scissor stairs and construction method of non-bearing fireproof partition wall |
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| CN112459302A true CN112459302A (en) | 2021-03-09 |
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| CN202011461740.7A Pending CN112459302A (en) | 2020-12-09 | 2020-12-09 | Non-bearing fireproof partition wall for scissor stairs, scissor stairs and construction method of non-bearing fireproof partition wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389331A (en) * | 2021-06-30 | 2021-09-14 | 中国建筑第八工程局有限公司 | Wall structure on stair inclined steel beam and construction method |
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2020
- 2020-12-09 CN CN202011461740.7A patent/CN112459302A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389331A (en) * | 2021-06-30 | 2021-09-14 | 中国建筑第八工程局有限公司 | Wall structure on stair inclined steel beam and construction method |
| CN113389331B (en) * | 2021-06-30 | 2022-11-25 | 中国建筑第八工程局有限公司 | Wall structure on stair inclined steel beam and construction method |
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