CN107178184A - Cantilever stair and its installation method - Google Patents
Cantilever stair and its installation method Download PDFInfo
- Publication number
- CN107178184A CN107178184A CN201710388004.5A CN201710388004A CN107178184A CN 107178184 A CN107178184 A CN 107178184A CN 201710388004 A CN201710388004 A CN 201710388004A CN 107178184 A CN107178184 A CN 107178184A
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- CN
- China
- Prior art keywords
- partition plate
- ear
- terraced beam
- fixed part
- prefabricated
- Prior art date
- 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.)
- Pending
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- 238000009434 installation Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 12
- 238000005192 partition Methods 0.000 claims abstract description 88
- 238000011065 in-situ storage Methods 0.000 claims abstract description 19
- 239000004567 concrete Substances 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 102100023170 Nuclear receptor subfamily 1 group D member 1 Human genes 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E04B2/7401—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using panels without a frame or supporting posts, with or without upper or lower edge locating rails
-
- 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
- E04B2/82—Removable non-load-bearing partitions; Partitions with a free upper edge characterised by the manner in which edges are connected to the building; Means therefor; Special details of easily-removable partitions as far as related to the connection with other parts of the building
- E04B2/821—Connections between two opposed surfaces (i.e. floor and ceiling) by means of a device offering a restraining force acting in the plane of the partition
-
- 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
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
-
- 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
- E04F2011/0203—Miscellaneous features of stairways not otherwise provided for
- E04F2011/0205—Stairways characterised by the use of specific materials for the supporting structure of the treads
- E04F2011/021—Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of stone or stone like materials, e.g. concrete; mainly of glass
- E04F2011/0212—Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of stone or stone like materials, e.g. concrete; mainly of glass mainly of concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The present invention provides a kind of cantilever stair, and cantilever stair includes terraced beam and chooses ear, terraced beam bridging piece, wall, partition plate and prefabricated gangboard, wherein:Terraced beam chooses one end that prefabricated gangboard is fixedly connected with ear, and the other end of prefabricated gangboard is slidably supported on terraced beam bridging piece;Partition plate is provided between wherein two prefabricated gangboards, the upper end two sides of partition plate are respectively arranged with support ear, and support ear is chosen ear with terraced beam and is in contact, and the lower end of partition plate is in contact or left 5mm gap with the upper surface of next layer of partition plate.Through hole is provided with partition plate, facilitates the lifting of partition plate, the convenience of installation is improved;The support ear that partition plate top is set can be such that partition plate is reliably fixed, and improve the reliability of installation, and be fixed between support ear and wall by floor in-situ layer, and connection is reliable.
Description
Technical field
The present invention relates to field of civil engineering, in particular to a kind of cantilever stair and its installation method.
Background technology
Stair are the important components of floor building, are main safe escape passages.It is both the selection in upper and lower building
Passage, is even more such as to occur the escape way in particular cases such as safety fire fighting accident or power failure.
" cantilever stair " is also referred to as overlapping stair, intersects stair or set ladder.The most important feature of cantilever stair is,
Two stair, the function with two fire escapes are provided with same staircase.Cantilever stair is available in planar design
The space of relatively narrower, sets two stair, this two stair adhere to two different fire compartments separately, thus improve construction area
Utilization rate.It is at present most save space, it is most economical, most rationally and can meet requirement passageway for fire apparatus, reached interests maximum
Change.
Fire partition, normal conditions should be set between the requirement of Building Fire Protection specification, general two cantilever stairs to meet
This lower partition wall is formed by poured in place concrete or wall of laying bricks.In fabricated assembly overall structure, employ precast reinforced
Concrete staircase, if using the above method again, live formwork supporting plate, assembling reinforcement, casting concrete can reduce the construction of staircase
Efficiency, influences stair construction period.Scene builds partition wall by laying bricks or stones and is also required to rendering of plastering, and increases artificial and material, and quality is difficult to control to.
The damage of finished product stair is easily caused simultaneously, is unfavorable for the popularization and application of prefabricated gangboard.Therefore, need to by partition wall and floor it is beam prefabricated with
Realize the full prefabrication and assembly construction of staircase.
Use new content
Present invention aims at provide it is a kind of can realize partition plate and floor it is beam prefabricated can realize partition plate assembling
Quick and simple cantilever stair.
To reach above-mentioned purpose, the present invention propose a kind of cantilever stair include terraced beam choose ear, terraced beam bridging piece, wall,
Partition plate and prefabricated gangboard, wherein:
Terraced beam chooses one end that prefabricated gangboard is fixedly connected with ear, and the other end of prefabricated gangboard is slidably supported on terraced beam bridging piece
On;
Partition plate is provided between wherein described two prefabricated gangboards, the upper end two sides of partition plate are respectively arranged with support
Ear, the support ear is chosen ear with terraced beam and is in contact, and the lower end of partition plate is in contact with the upper surface of next layer of partition plate.
Further, it is in wall on floor preformed layer, the floor preformed layer that foregoing terraced beam, which chooses ear and terraced beam bridging piece,
Floor in-situ layer is provided between prefabricated gangboard, the upper surface of the floor in-situ layer is in same with the upper surface of prefabricated gangboard
One horizontal plane.
Further, it is provided with railing installing component on foregoing partition plate.
Further, the bottom of the partition plate is provided withType fixed part, it is describedWith partition plate length on type fixed part
Soft-lock is provided with the perpendicular face in direction, one end of the soft-lock is located atIn type fixed part, the other end of soft-lock stretches outType
Fixed part;The upper surface of the partition plate is provided with the second fixed part for stretching out partition plate upper surface, the second fixed part and soft-lock
The other end be connected;The first fixed part that stretch out support ear and that upper surface with partition plate is parallel is provided with support ear.
Further, foregoing second fixed part and the first fixed part are reinforcing bar.
Further, it is provided with through hole on foregoing partition plate.
Further, the interface width that foregoing support ear chooses ear with terraced beam is not less than 140mm.
Further, 20mm interval is provided between foregoing prefabricated gangboard and terraced beam bridging piece.
Further, it is provided with anti-slip tank on foregoing prefabricated gangboard.
The invention also provides a kind of installation method of cantilever stair, its method comprises the following steps:It is mixed in reinforcing bar in advance
Positioning hole is produced on solidifying native prefabricated gangboard, and pre-production goes out prefabricated gangboard at the stair installing port of the wall of building
Mounting platform be that terraced beam chooses ear and terraced beam bridging piece, be hinged mouth while choosing to be preset with ear in terraced beam;
Then, will by being hinged mouth by the installed position of the armored concrete precast floor slab amplifier made to building
One end of prefabricated gangboard and terraced beam choose ear by being hinged fixation, the other end of prefabricated gangboard and terraced beam bridging piece sliding contact;
Partition plate is sling by loop wheel machine, partition plate is placed into the bottom of fixed position, the wherein partition plate of bottom
Contacted with ground, the bottom of partition plate is provided withType fixed part,The face perpendicular with partition plate length direction on type fixed part
Soft-lock is inside provided with, one end of the soft-lock is located atIn type fixed part, the other end of soft-lock stretches outType fixed part;The partition wall
The upper surface of plate is provided with the second fixed part for stretching out partition plate upper surface, and the second fixed part is connected with the other end of soft-lock;
The first fixed part that stretch out support ear and that upper surface with partition plate is parallel is provided with support ear, wherein adjacent two pieces every
Wallboard is realized by the connection of the second fixed part and soft-lock and fixed;
Floor preformed layer top and cast-in-place concrete formation floor in-situ layer, the floor between wall and prefabricated gangboard
The upper surface of in-situ layer and the upper surface of prefabricated gangboard are in same level;
The gap cast-in-place concrete that partition plate and terraced beam are chosen between ear forms in-situ layer;
Cantilever stair installation.
From above technical scheme, the connected mode of cantilever stair lower slide of the invention is simple, essentially eliminates
Influence of the gangboard to agent structure stress and rigidity under geological process, makes structure power transmission clear, result of calculation is accurately and reliably;It is prefabricated
Gangboard and anti-slip tank are prefabricated together, save plastering process, and construction speed is fast, cost is low, save material, improve quality, can be fully
Play the advantage that industrialization is built;The pre-buried railing installing component on partition plate, facilitates the installation of follow-up finished product staircase;Partition wall
Through hole is provided with plate, facilitates the lifting of partition plate, the convenience of installation is improved;The support ear that partition plate top is set can
Partition plate is reliably fixed, improve the reliability of installation, and fixed between support ear and wall by floor in-situ layer,
Connection is reliable.
As long as it should be appreciated that all combinations of aforementioned concepts and the extra design described in greater detail below are at this
A part for the subject matter of the disclosure is can be viewed as in the case that the design of sample is not conflicting.In addition, required protect
All combinations of the theme of shield are considered as a part for the subject matter of the disclosure.
Can be more fully appreciated with from the following description with reference to accompanying drawing present invention teach that foregoing and other aspect, reality
Apply example and feature.The feature and/or beneficial effect of other additional aspects such as illustrative embodiments of the present invention will be below
Description in it is obvious, or by according to present invention teach that embodiment practice in learn.
Brief description of the drawings
Accompanying drawing is not intended to drawn to scale.In the accompanying drawings, each identical or approximately uniform group shown in each figure
It can be indicated by the same numeral into part.For clarity, in each figure, not each part is labeled.
Now, by example and the embodiments of various aspects of the invention will be described in reference to the drawings, wherein:
Fig. 1 is the structural representation of cantilever stair.
Fig. 2 is the partial enlarged drawing in A portions in Fig. 1.
Fig. 3 is the partial enlarged drawing in B portions in Fig. 1.
Fig. 4 is the partial enlarged drawing in C portions in Fig. 1.
Fig. 5 is the structural representation of prefabricated gangboard.
Fig. 6 is the attachment structure schematic diagram of adjacent two pieces of partition plates.
The implication of correlation indices is as follows in figure:1st, terraced beam chooses ear, and 2, wall, 3, terraced beam bridging piece, 4, partition plate, 5, prefabricated ladder
Plate, 6, support ear, 7, floor in-situ layer, 8,Type fixed part, 9, soft-lock, 10, through hole, the 11, first fixed part, 12, second fixes
Portion, 13, anti-slip tank, 14, in-situ layer.
Embodiment
In order to know more about the technology contents of the present invention, especially exemplified by specific embodiment and institute's accompanying drawings are coordinated to be described as follows.
Each side with reference to the accompanying drawings to describe the present invention in the disclosure, shown in the drawings of the embodiment of many explanations.
It is not intended to cover all aspects of the invention for embodiment of the disclosure.It should be appreciated that a variety of designs presented hereinbefore and reality
Apply example, and those designs described in more detail below and embodiment can in many ways in any one come real
Apply, because design disclosed in this invention and embodiment are not limited to any embodiment.In addition, disclosed by the invention one
A little aspects can be used alone, or otherwise any appropriately combined be used with disclosed by the invention.
As shown in Figures 1 to 6, a kind of cantilever stair, the cantilever stair includes terraced beam and chooses ear 1, terraced beam bridging piece 3, wall
2nd, partition plate 4 and prefabricated gangboard 5, wherein:Terraced beam chooses one end that prefabricated gangboard 5 is fixedly connected with ear 1, the one of prefabricated gangboard 5
End is chosen ear 1 with terraced beam and is hinged, and the other end of prefabricated gangboard 5 is slidably supported on terraced beam bridging piece 3.
Partition plate 4 is provided between wherein described two prefabricated gangboards 5, the upper end two sides of partition plate 4 are respectively arranged with
Support ear 6, the support ear 6 is chosen ear 1 with terraced beam and is in contact, and the lower end of partition plate 4 connects with the upper surface of next layer of partition plate 4
Touch or leave 5mm gap.
In further embodiment, it is floor preformed layer, the floor preformed layer that the terraced beam, which chooses ear 1 and terraced beam bridging piece 3,
On be provided with floor in-situ layer 7 between wall 2 and prefabricated gangboard 5, the upper surface of the floor in-situ layer 7 and prefabricated gangboard 5
Upper surface be in same level.
Further carry out in example, railing installing component is provided with the partition plate 4, the railing installing component can
Facilitate the installation of railing, the reduction later stage installs the difficulty of processing of railing.
Further carry out in example, the bottom of the partition plate 4 is provided withType fixed part 8, it is describedType fixed part 8
Soft-lock 9 is provided with the face that two ends are in contact with wall 2, one end of the soft-lock 9 is located atIn type fixed part 8, soft-lock 9 it is another
One end is stretched outType fixed part 8;The top of the partition plate 4 is provided with the second fixed part 12 for stretching out the upper surface of partition plate 4, the
One fixed part 11 is connected with the other end of soft-lock 9;Be provided with support ear 6 stretch out support ear 6 and with the upper table of partition plate 4
The first parallel fixed part 11 of face.
Further carry out in example, the fixed part 11 of the second fixed part 12 and first is reinforcing bar.
Further carry out in example, through hole 10 is provided with the partition plate 4, the through hole 10 is used in installation process
Partition plate 4 is lifted, partition plate 4 is reliably lifted.
Further carry out in example, the interface width that the support ear 6 chooses ear 1 with terraced beam is not less than 140mm.
Further carry out in example, be provided with 20mm interval between the prefabricated gangboard 5 and terraced beam bridging piece 3, it is described between
In-situ layer 14 is provided with every interior, prefabricated gangboard 5 is reliably fixed with terraced beam bridging piece 3.
Further carry out in example, anti-slip tank 13 is provided with the prefabricated gangboard 5, anti-slip tank 13 and prefabricated gangboard 5 are same
Shi Jiagong, reduces the process of plastering in later stage, improves production efficiency, reduce cost.
The installation method of this cantilever stair is as follows:Positioning hole is produced on the prefabricated gangboard 5 of armored concrete in advance, and
Pre-production goes out the i.e. terraced beam of mounting platform of prefabricated gangboard 5 and chooses ear 1 and terraced beam is chosen at the stair installing port of the wall 2 of building
Plate 3, mouth is hinged while choosing to be preset with ear 1 in terraced beam.
Then, will by being hinged mouth by the installed position of the armored concrete precast floor slab amplifier made to building
One end of prefabricated gangboard 5 and terraced beam choose ear 1 by being hinged fixation, the other end of prefabricated gangboard 5 and the terraced sliding contact of beam bridging piece 3.
Partition plate 4 is sling by loop wheel machine, partition plate 4 is placed into the bottom of fixed position, the wherein partition plate 4 of bottom
Portion is contacted with ground, and the bottom of partition plate 4 is provided withType fixed part 8,Mutually hung down with the length direction of partition plate 4 on type fixed part 8
Soft-lock 9 is provided with straight face, one end of the soft-lock 9 is located atIn type fixed part 8, the other end of soft-lock 9 stretches outType is fixed
Portion 8;The upper surface of the partition plate 4 is provided with the second fixed part 12 for stretching out partition plate 4 upper surface, the second fixed part 12 with it is soft
The other end of lock 9 is connected;It is provided with stretching out support ear 6 on support ear 6 and parallel with the upper surface of partition plate 4 first consolidates
Determine portion 11, fixed wherein two pieces of adjacent partition plates 4 are realized by the connection of the second fixed part 12 and soft-lock 9.
Floor preformed layer top and cast-in-place concrete formation floor in-situ layer 147, institute between wall 2 and prefabricated gangboard 5
State the upper surface of floor in-situ layer 147 and be in same level with the upper surface of prefabricated gangboard 5.
The gap cast-in-place concrete that partition plate 4 and terraced beam are chosen between ear 1 forms in-situ layer 14.Cantilever stair installation.
Although the present invention is disclosed above with preferred embodiment, so it is not limited to the present invention.Skill belonging to of the invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (10)
1. a kind of cantilever stair, it is characterised in that the cantilever stair include terraced beam choose ear, terraced beam bridging piece, wall, partition plate and
Prefabricated gangboard, wherein:
Terraced beam chooses one end that prefabricated gangboard is fixedly connected with ear, and the other end of prefabricated gangboard is slidably supported on terraced beam bridging piece;
Partition plate is provided between wherein described two prefabricated gangboards, the upper end two sides of partition plate are respectively arranged with support ear,
The support ear is chosen ear with terraced beam and is in contact, and the lower end of partition plate is in contact or left 5mm with the upper surface of next layer of partition plate
Gap.
2. cantilever stair according to claim 1, it is characterised in that it is that floor is prefabricated that the terraced beam, which chooses ear and terraced beam bridging piece,
Layer, the floor preformed layer top and is provided with floor in-situ layer between wall and prefabricated gangboard, the floor in-situ layer
Upper surface and the upper surface of prefabricated gangboard are in same level.
3. cantilever stair according to claim 1, it is characterised in that railing installing component is provided with the partition plate.
4. cantilever stair according to claim 1, it is characterised in that the bottom of the partition plate is provided with types and fixed
Soft-lock is provided with the face perpendicular with partition plate length direction on portion, the types fixed part, one end of the soft-lock is located at
In type fixed parts, the other end of soft-lock stretches out type fixed parts;The upper surface of the partition plate is provided with stretching partition plate
Second fixed part of end face, the second fixed part is connected with the other end of soft-lock;Be provided with support ear stretch out support ear and
First fixed part parallel with the upper surface of partition plate.
5. cantilever stair according to claim 4, it is characterised in that second fixed part and the first fixed part are steel
Muscle.
6. cantilever stair according to claim 5, it is characterised in that be provided with through hole on the partition plate.
7. cantilever stair according to claim 1, it is characterised in that the support ear chooses the interface width of ear with terraced beam
Not less than 140mm.
8. cantilever stair according to claim 1, it is characterised in that be provided between the prefabricated gangboard and terraced beam bridging piece
20mm interval.
9. cantilever stair according to claim 1, it is characterised in that be provided with anti-slip tank on the prefabricated gangboard.
10. the installation method of cantilever stair according to claim 4, it is characterised in that the installation method includes as follows
Step:
Positioning hole is produced in advance on the prefabricated gangboard of armored concrete, and pre- at the stair installing port of the wall of building
The i.e. terraced beam of mounting platform for first producing prefabricated gangboard chooses ear and terraced beam bridging piece, and mouth is hinged while choosing to be preset with ear in terraced beam;
Then, will be prefabricated by being hinged mouth by the installed position of the armored concrete precast floor slab amplifier made to building
One end of gangboard and terraced beam choose ear by being hinged fixation, the other end of prefabricated gangboard and terraced beam bridging piece sliding contact;
Partition plate is sling by loop wheel machine, partition plate is placed into fixed position, the wherein bottom of the partition plate of bottom and ground
Face is contacted, and the bottom of partition plate is provided withType fixed part,Set on type fixed part in the face perpendicular with partition plate length direction
Soft-lock is equipped with, one end of the soft-lock is located atIn type fixed part, the other end of soft-lock stretches outType fixed part;The partition plate
Upper surface be provided with the second fixed part for stretching out partition plate upper surface, the second fixed part is connected with the other end of soft-lock;Branch
The first fixed part that stretch out support ear and that upper surface with partition plate is parallel is provided with support ear, wherein two pieces of adjacent partition walls
Plate is realized by the connection of the second fixed part and soft-lock and fixed;
Floor preformed layer top and the cast-in-place concrete formation floor in-situ layer between wall and prefabricated gangboard, the floor are cast-in-place
The upper surface of layer is in same level with the upper surface of prefabricated gangboard;
The gap cast-in-place concrete that partition plate and terraced beam are chosen between ear forms in-situ layer;
Cantilever stair installation.
Priority Applications (1)
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CN201710388004.5A CN107178184A (en) | 2017-05-27 | 2017-05-27 | Cantilever stair and its installation method |
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CN201710388004.5A CN107178184A (en) | 2017-05-27 | 2017-05-27 | Cantilever stair and its installation method |
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ID=59835006
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CN201710388004.5A Pending CN107178184A (en) | 2017-05-27 | 2017-05-27 | Cantilever stair and its installation method |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107762079A (en) * | 2017-11-06 | 2018-03-06 | 常德远大建筑工业有限公司 | A kind of anchoring type precast stair attachment structure |
CN108286314A (en) * | 2017-12-11 | 2018-07-17 | 新疆苏中建设工程有限公司 | A kind of two-way precast stair of assembled and its installation method |
CN108755974A (en) * | 2018-07-28 | 2018-11-06 | 中城投集团第六工程局有限公司 | The connection structure and construction method of the integral prefabricated partition plate of cantilever stair |
CN109629714A (en) * | 2017-10-08 | 2019-04-16 | 李聪 | A kind of prefabricated partition wall of the staircase with installation base and its installation method |
CN113802784A (en) * | 2021-09-23 | 2021-12-17 | 中国建筑西北设计研究院有限公司 | Design method and prefabricated assembled concrete shear stair |
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CN204662717U (en) * | 2015-02-16 | 2015-09-23 | 中国建筑股份有限公司 | A kind of staircase prefabricated reinforced concrete fire barrier structure |
CN204609155U (en) * | 2015-04-28 | 2015-09-02 | 重庆建工住宅建设有限公司 | A kind of prefabrication and assembly construction segmented staircase structure |
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