CN110107038B - Anti-seismic concrete prefabricated staircase - Google Patents
Anti-seismic concrete prefabricated staircase Download PDFInfo
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- CN110107038B CN110107038B CN201910314825.3A CN201910314825A CN110107038B CN 110107038 B CN110107038 B CN 110107038B CN 201910314825 A CN201910314825 A CN 201910314825A CN 110107038 B CN110107038 B CN 110107038B
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- stair
- connecting body
- plate body
- slope
- lower connecting
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- 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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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The invention relates to the field of concrete prefabricated staircases, in particular to an anti-seismic concrete prefabricated staircase which comprises a staircase body, wherein anti-seismic structures are arranged at two ends of the staircase body, the staircase body is connected with a staircase platform through the anti-seismic structures, each anti-seismic structure comprises an upper connecting body, a lower connecting body and a connecting block, the upper connecting body is connected with the lower connecting body through a bolt, the top of the bolt is fixedly connected with the upper connecting body, the bottom of the bolt penetrates through the lower connecting body, a part of the bolt penetrating to the lower part of the lower connecting body is sleeved with a first spring, and the first spring; the lower surface of the upper connecting body is provided with a first slope. Under the condition of earthquake or other vibrations, no matter the stair body and the stair platform move relatively in the horizontal direction or move relatively in the vertical direction, the stair body and the stair platform are not easy to collide and damage; set up anti-seismic structure in the stair body, improved the structural stability of stair body self, can prevent that longer stair body from receiving the shear force and splitting when removing in the earthquake.
Description
Technical Field
The invention relates to the field of concrete prefabricated stairs, in particular to an anti-seismic concrete prefabricated stair.
Background
In the current traditional building construction process, most of the stair construction adopts a cast-in-place structure, the on-site formwork support of the traditional cast-in-place stair structure is difficult, the construction joint quality is not easy to control, the labor amount and the wood consumption are large, the market labor price is continuously increased along with the continuous innovation and development of the building industry, the building cost is increased, the building industry is inevitably developed towards the industrialization and industrialization direction, the assembly type mode is more and more used along with the mature and perfect assembly type building technology, the prefabricated stair is taken as a part which cannot be lost of the assembly type structure, and the prefabricated stair is inevitably popularized and applied on a large scale.
However, to be popularized and applied, the concrete prefabricated staircase needs to solve the key problems of anti-seismic deformation and temperature deformation, and according to multiple tests, the prefabricated staircase adopts a design that one end is fixed and the other end slides, so that the prefabricated staircase is the best design meeting anti-seismic design specifications, and the problem of solving the fixed end support becomes the key of the technology.
The invention patent with the publication number of CN103132660A discloses a fixed end support of a precast concrete stair, which is characterized in that a tie bar and a dowel bar are pre-embedded on an L-shaped lap joint platform of a cast-in-place concrete stair beam, the tie bar is pre-embedded on the precast concrete stair and a concrete tongue-and-groove joint of the stair is completed, the precast concrete stair is arranged on a seat mortar of the L-shaped lap joint platform, and a bonding layer is poured into the tongue-and-groove joint between the L-shaped lap joint platform and the precast concrete stair. However, when the concrete prefabricated staircase and the cast-in-place staircase platform move relatively in the horizontal direction due to an earthquake, the concrete prefabricated staircase and the cast-in-place staircase platform still collide with each other, so that the concrete prefabricated staircase or the cast-in-place staircase platform is damaged.
Disclosure of Invention
The invention aims to provide an earthquake-resistant concrete prefabricated staircase which has the advantage that the staircase body and a landing are not easy to collide and damage when moving relatively.
The above object of the present invention is achieved by the following technical solutions: an anti-seismic concrete prefabricated staircase comprises a staircase body, wherein anti-seismic structures are arranged at two ends of the staircase body, the staircase body is connected with a staircase platform through the anti-seismic structures, each anti-seismic structure comprises an upper connecting body, a lower connecting body and a connecting block, the upper connecting body is connected with the lower connecting body through a bolt, the top of the bolt is fixedly connected with the upper connecting body, the bottom of the bolt penetrates through the lower connecting body, a first spring is sleeved on the part, penetrating to the lower part of the lower connecting body, of the bolt, and the first spring upwards props against the lower connecting; the lower surface of the upper connecting body is provided with a first slope, the upper surface of the lower connecting body is provided with a second slope, an included angle between the first slope and the second slope is an acute angle, the connecting body is provided with a first inclined surface matched with the first slope and a second inclined surface matched with the second slope, and the connecting body is inserted between the upper connecting body and the lower connecting body; the fixed lower connector of stair body one end, the fixed connection block on the landing that corresponds, stair body other end fixed connection block, the fixed lower connector on the landing that corresponds.
Through adopting above-mentioned technical scheme, when stair body and landing when horizontal direction relative movement, the connecting block inserts the degree of depth increase between connector and the lower connector, first spring makes connector and lower connector clamp tightly to the ascending thrust of lower connector, thereby produce the resistance to inserted connecting block, seismic energy partly turns into the frictional resistance (the production internal energy) of connector and lower connector that the landing receives, partly turns into the potential energy of first spring deformation, seismic energy remains partly at a small number and turns into the kinetic energy of landing, consequently, can reduce the speed that the landing inserted between connector and the lower connector, make landing and stair body can not collide with each other.
When the stair body and the stair platform move relatively in the vertical direction, one end of each of two ends of the stair body can move, most of earthquake energy is converted into potential energy of the first springs at the two ends of the stair body, and a small part of earthquake energy is converted into kinetic energy of the stair body, so that the amplitude of up-and-down shaking of the stair body can be reduced, and the stair platform is prevented from colliding with the stair body.
In conclusion, no matter the stair body and the stair platform move relatively in the horizontal direction or move relatively in the vertical direction, the two are not easy to collide and damage.
The stair platform increases the distance between the upper connecting body and the lower connecting body, the first spring plays a role in buffering the lower connecting body and absorbing seismic energy, only little residual seismic energy acts on the stair body in an upward pulling force mode,
preferably, the earthquake-proof structure is also arranged in the stair body.
Through adopting above-mentioned technical scheme, improved the structural stability of stair body self, can prevent that longer stair body from receiving the shear force and splitting when removing in the earthquake.
Preferably, the stair body is provided with a first step and a second step which are adjacent to each other, the first step is disconnected from the second step, and the anti-seismic structure is arranged between the first step and the second step; the first step is fixed with a connecting block, and the second step is fixed with a lower connecting body.
By adopting the technical scheme, the anti-seismic structure is arranged between the first step and the second step, and the anti-seismic structure can be used for replacing the step between the first step and the second step, so that the basic shape of the stair body is unchanged.
Preferably, the upper connecting body comprises a first plate body and a second plate body, the first plate body is horizontally arranged, the second plate body is vertically arranged, the first plate body is located at the top of the upper connecting body, a plurality of first rib plates are connected between the first plate body and the second plate body, and a first slope is formed on the bottom surfaces of the first rib plates.
Through adopting above-mentioned technical scheme, adopt first plate body, second plate body and a plurality of first floor to constitute the connector, not only can guarantee that the connector has good structural strength, can also alleviate the weight of connector to alleviate the weight of whole stair body.
Preferably, the lower connecting body comprises a third plate body and a vertically arranged fourth plate body, the third plate body is located at the bottom of the lower connecting body, a plurality of second rib plates are connected between the third plate body and the fourth plate body, and second slopes are formed on the top surfaces of the second rib plates.
Through adopting above-mentioned technical scheme, adopt third plate body, fourth plate body and a plurality of second floor to constitute down the connector, not only can guarantee down that the connector has good structural strength, can also alleviate the weight of connector down to alleviate the weight of whole stair body.
Preferably, the bolt penetrates through the upper portion of the upper connecting body, a counter bore is formed in the upper surface of the upper connecting body, a nut at the top of the bolt is located in the counter bore, and grouting is conducted in the counter bore.
Through adopting above-mentioned technical scheme, the fixed stability of bolt and last connector has been improved.
Preferably, the outer side surface of the second plate body is tightly attached to a long plate, a round hole is formed in the long plate, a steel bar extends out of the side surface of the connecting block, the steel bar penetrates through the upper connecting body and extends into the round hole, a second spring is sleeved on the part, located in the round hole, of the steel bar, a baffle is fixed to the part, located in the round hole, of the steel bar, one end of the second spring abuts against the baffle, and the other end of the second spring abuts against the upper connecting body.
Through adopting above-mentioned technical scheme, the reinforcing bar that the landing side stretches out can restrict stair body and landing relative movement distance on the horizontal direction with the cooperation of baffle to prevent that the connecting block from deviating from between upper connector and the lower connector, the second spring also can cushion and store some seismic energy.
Preferably, the side surface of the stair platform is provided with a slot for inserting the upper connecting body.
By adopting the technical scheme, the slot enlarges the horizontal movement range of the upper connecting body, so that the stair body and the stair platform can move relatively in the horizontal direction for a larger distance and still cannot collide with each other.
In conclusion, the beneficial technical effects of the invention are as follows:
1. under the condition of earthquake or other vibrations, no matter the stair body and the stair platform move relatively in the horizontal direction or move relatively in the vertical direction, the stair body and the stair platform are not easy to collide and damage;
2. set up anti-seismic structure in the stair body, improved the structural stability of stair body self, can prevent that longer stair body from receiving the shear force and splitting when removing in the earthquake.
Drawings
FIG. 1 is a schematic view of the overall structure of an earthquake-resistant concrete prefabricated staircase;
FIG. 2 is a front view of an earthquake-resistant structure of the earthquake-resistant concrete prefabricated staircase;
FIG. 3 is a schematic structural view of an upper connecting body;
FIG. 4 is a schematic view of the structure of the lower connecting body;
FIG. 5 is an exploded view of a seismic structure;
fig. 6 is an enlarged view of a portion a in fig. 1.
In the figure, 1, a stair body; 1a, a first step; 1b, a second step; 2. a landing; 2a, a slot; 3. an upper connector; 3a, a first slope; 31. a first plate body; 31a, a counter bore; 32. a second plate body; 33. a first rib plate; 4. a lower connector; 4a, a second slope; 41. a third plate body; 42. a fourth plate body; 43. a second rib plate; 5. connecting blocks; 5a, a first inclined plane; 5b, a second inclined plane; 6. a bolt; 7. a first spring; 8. a long plate; 8a, a round hole; 9. reinforcing steel bars; 10. a second spring; 11. a baffle plate; 12. a collar.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): fig. 1 is an anti-seismic concrete prefabricated staircase disclosed by the invention, which comprises a staircase body 1, wherein the center and two ends of the staircase body 1 are respectively provided with an anti-seismic structure, and the two ends of the staircase body 1 are connected with a staircase platform 2 through the anti-seismic structures.
As shown in fig. 2, the anti-seismic structure is composed of an upper connecting body 3, a lower connecting body 4 and a connecting block 5, wherein the upper connecting body 3 and the lower connecting body 4 are connected through a bolt 6. The lower surface of the upper connecting body 3 is provided with a first slope 3a, the upper surface of the lower connecting body 4 is provided with a second slope 4a, and the included angle between the first slope 3a and the second slope 4a is an acute angle; the connecting block 5 is inserted between the upper connecting body 3 and the lower connecting body 4, and a first inclined surface 5a matched with the first slope 3a and a second inclined surface 5b matched with the second slope 4a are arranged on the connecting block 5.
As shown in fig. 1, a slot 2a for inserting the upper connector 3 is formed on the side surface of the landing 2, and the slot 2a enlarges the horizontal movement range of the upper connector 3, so that the landing 2 and the stair body 1 can move relatively in the horizontal direction for a longer distance and still cannot collide with each other.
As shown in fig. 3, the upper connecting body 3 is integrally formed by a first plate 31 and a second plate 32 which are perpendicular to each other, and in the installed anti-seismic structure, the first plate 31 is horizontally arranged and the second plate 32 is vertically arranged. The first plate 31 is located at the top of the upper connector 3, the first ribs 33 are fixedly connected between the first plate 31 and the second plate 32, the first ribs 33 are equidistantly arranged along the length direction of the upper connector 3, and the bottom surfaces of the first ribs 33 are combined to form a first slope 3 a.
As shown in fig. 2, the outer side surface of the second plate body 32 is closely provided with a vertical long plate 8, and the shape of the long plate 8 is the same as that of the vertical side surface of the step. One row of reinforcing bar 9 is worn out to 5 sides of connecting block, and when connecting block 5 and 1 integrated into one piece of stair body, reinforcing bar 9 is stair body 1's structure muscle, and when connecting block 5 and 2 integrated into one piece of stair platform, reinforcing bar 9 is stair platform 2's structure muscle.
As shown in fig. 5, a round hole 8a is formed in the long plate 8, the steel bar 9 penetrates through the upper connector 3 and extends into the round hole 8a, a second spring 10 is sleeved on a portion, located in the round hole 8a, of the steel bar 9, a baffle 11 is fixed on a portion, located in the round hole 8a, of the steel bar 9, one end of the second spring 10 abuts against the baffle 11, and the other end of the second spring 10 abuts against the upper connector 3.
With reference to fig. 4 and 6, the lower connecting body 4 is integrally formed by a third plate body 41 and a fourth plate body 42, in the installed anti-seismic structure, the third plate body 41 is obliquely arranged, the fourth plate body 42 is vertically arranged, the third plate body 41 is located at the bottom of the lower connecting body 4, and when the lower connecting body is not vibrated, the lower surface of the third plate body 41 is flush with the lower surface of the stair body 1. A plurality of second ribs 43 are fixedly connected between the third plate 41 and the fourth plate 42, the plurality of second ribs 43 are equidistantly arranged along the length direction of the lower connecting body 4, and the top surfaces of all the second ribs 43 are combined to form a second slope 4 a.
As shown in fig. 6, the top of the bolt 6 penetrates above the upper connecting body 3, the upper surface of the upper connecting body 3 is provided with a counter bore 31a, the nut of the bolt 6 is positioned in the counter bore 31a, the counter bore 31a is filled with grout and is leveled (flush with the upper surface of the upper connecting body 3), the bottom of the bolt 6 penetrates through the lower connecting body 4, the part of the bolt 6 penetrating below the lower connecting body 4 is sleeved with a first spring 7, the tail end of the bolt 6 is fixed with a nut, and the bottom end of the first spring 7 abuts against the nut and the top end abuts against the lower connecting body 4. Or a nut may be screwed to the bolt 6 between the upper connector 3 and the lower connector 4 so that the nut is tightly attached to the inner surface of the upper connector 3, thereby firmly fixing the bolt 6 to the upper connector 3. A lantern ring 12 (see fig. 2) can be sleeved on the bolt 6 below the lower connecting body 4, the top surface of the lantern ring 12 is matched with the bottom surface of the lower connecting body 4, the bottom surface of the lantern ring 12 is horizontal, the top of the first spring 7 is abutted against the bottom surface of the lantern ring 12, and the lantern ring 12 can enable the reaction force of the first spring 7 to vertically act on the lower connecting body 4.
As shown in fig. 6, the stair body 1 has a first step 1a and a second step 1b adjacent to each other, the first step 1a is disconnected from the second step 1b, and the anti-seismic structure is located between the first step 1a and the second step 1b, and is specifically arranged as follows: the connecting block 5 is formed on the first step 1a, and the lower connecting body 4 is fixed on the second step 1 b. The appearance of the anti-seismic structure is equivalent to that of the step, and the anti-seismic structure can also perform the function of the step.
As shown in fig. 1, the installation positions of the earthquake-proof structure at the two ends of the stair body 1 are: one end of the stair body 1 is fixed with a lower connecting body 4, and a connecting block 5 is fixed on the corresponding stair platform 2; the other end of the stair body 1 is fixed with a connecting block 5, and a lower connecting body 4 is fixed on the corresponding stair platform 2; the rest parts in the anti-seismic structure are arranged according to the relative positions of the lower connecting body 4 and the connecting block 5, and the connecting block 5 is integrally formed with the stair body 1 and the stair platform 2.
The implementation principle of the embodiment is as follows: when stair body 1 and landing 2 are at the horizontal direction relative movement, the degree of depth that connecting block 5 inserted between connector 3 and the lower connector 4 increases, first spring 7 makes connector 3 and lower connector 4 press from both sides tightly to the ascending thrust of lower connector 4, thereby produce the resistance to inserted connecting block 5, seismic energy partly turns into the frictional resistance (produces the internal energy) of connector 3 and lower connector 4 that landing 2 received, partly turns into the potential energy of first spring 7 deformation, seismic energy remains very little partly and turns into the kinetic energy of landing 2, consequently can reduce the speed that landing 2 inserted between connector 3 and the lower connector 4, make landing 2 and stair body 1 can not collide with each other.
When the stair body 1 and the stair platform 2 move relatively in the vertical direction, one end of each of two ends of the stair body 1 can move, most of earthquake energy is converted into potential energy of the first springs 7 at the two ends of the stair body 1, and a small part of earthquake energy is converted into kinetic energy of the stair body 1, so that the amplitude of up-and-down shaking of the stair body 1 can be reduced, and the stair platform 2 is prevented from colliding with the stair body 1.
In summary, no matter the stair body 1 and the stair platform 2 move relatively in the horizontal direction or move relatively in the vertical direction, the two are not easy to collide and damage.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides an antidetonation concrete prefabricated staircase, includes stair body (1), and the both ends of stair body (1) all are equipped with anti-seismic structure, and stair body (1) are connected its characterized in that through anti-seismic structure and landing (2):
the anti-seismic structure comprises an upper connecting body (3), a lower connecting body (4) and a connecting block (5), wherein the upper connecting body (3) is connected with the lower connecting body (4) through a bolt (6), the top of the bolt (6) is fixedly connected with the upper connecting body (3), the bottom of the bolt (6) penetrates through the lower connecting body (4), a first spring (7) is sleeved on the part, below the lower connecting body (4), of the bolt (6), and the first spring (7) upwards abuts against the lower connecting body (4);
the lower surface of the upper connecting body (3) is provided with a first slope (3 a), the upper surface of the lower connecting body (4) is provided with a second slope (4 a), the included angle between the first slope (3 a) and the second slope (4 a) is an acute angle, the connecting block (5) is provided with a first inclined surface (5 a) matched with the first slope (3 a) and a second inclined surface (5 b) matched with the second slope (4 a), and the connecting block (5) is inserted between the upper connecting body (3) and the lower connecting body (4);
the fixed lower connector (4) of stair body (1) one end, fixed connection piece (5) on stair platform (2) that correspond, stair body (1) other end fixed connection piece (5), fixed lower connector (4) on stair platform (2) that correspond.
2. An earthquake-resistant concrete prefabricated staircase according to claim 1, characterized in that: the anti-seismic structure is also arranged in the stair body (1).
3. An earthquake-resistant concrete prefabricated staircase according to claim 2, characterized in that: the stair body (1) is provided with a first step (1 a) and a second step (1 b) which are adjacent to each other, the first step (1 a) is disconnected from the second step (1 b), and the anti-seismic structure is arranged between the first step (1 a) and the second step (1 b); a connecting block (5) is fixed on the first step (1 a), and a lower connecting body (4) is fixed on the second step (1 b).
4. An earthquake-resistant concrete prefabricated staircase according to claim 1, characterized in that: the upper connector (3) comprises a first plate body (31) and a second plate body (32), the first plate body (31) is horizontally arranged, the second plate body (32) is vertically arranged, the first plate body (31) is located at the top of the upper connector (3), a plurality of first rib plates (33) are connected between the first plate body (31) and the second plate body (32), and a first slope (3 a) is formed on the bottom surfaces of the first rib plates (33).
5. An earthquake-resistant concrete prefabricated staircase according to claim 1, characterized in that: the lower connecting body (4) comprises a third plate body (41) and a vertically arranged fourth plate body (42), the third plate body (41) is located at the bottom of the lower connecting body (4), a plurality of second rib plates (43) are connected between the third plate body (41) and the fourth plate body (42), and a second slope (4 a) is formed on the top surfaces of the second rib plates (43).
6. An earthquake-resistant concrete prefabricated staircase according to claim 1, characterized in that: the bolt (6) penetrates above the upper connecting body (3), a counter bore (31 a) is formed in the upper surface of the upper connecting body (3), a nut at the top of the bolt (6) is located in the counter bore (31 a), and grouting is conducted in the counter bore (31 a).
7. An earthquake-resistant concrete prefabricated staircase according to claim 4, characterized in that: the lateral surface of second plate body (32) is hugged closely and is equipped with long board (8), be equipped with round hole (8 a) on long board (8), reinforcing bar (9) are stretched out to connecting block (5) side, reinforcing bar (9) pass connector (3) and stretch into in round hole (8 a), the part cover that reinforcing bar (9) are located round hole (8 a) has second spring (10), the part that reinforcing bar (9) are located round hole (8 a) is fixed with baffle (11), the one end of second spring (10) supports on baffle (11), the other end of second spring (10) supports on last connector (3).
8. An earthquake-resistant concrete prefabricated staircase according to claim 1, characterized in that: the side surface of the stair platform (2) is provided with a slot (2 a) for the upper connector (3) to be inserted into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314825.3A CN110107038B (en) | 2019-04-18 | 2019-04-18 | Anti-seismic concrete prefabricated staircase |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314825.3A CN110107038B (en) | 2019-04-18 | 2019-04-18 | Anti-seismic concrete prefabricated staircase |
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| CN110107038A CN110107038A (en) | 2019-08-09 |
| CN110107038B true CN110107038B (en) | 2020-12-08 |
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| CN201910314825.3A Active CN110107038B (en) | 2019-04-18 | 2019-04-18 | Anti-seismic concrete prefabricated staircase |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593500B (en) * | 2019-09-27 | 2020-10-09 | 安徽建筑大学城市建设学院 | Safe and firm assembled earthquake-resistant stair |
| CN112482676B (en) * | 2020-11-20 | 2022-02-22 | 广州金辉建设集团有限公司 | Prefabricated staircase and installation process thereof |
| CN114232917A (en) * | 2021-12-22 | 2022-03-25 | 莱芜凤凰建工集团有限公司 | Prefabricated concrete stair assembly structure and assembly method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001081923A (en) * | 1999-09-09 | 2001-03-27 | Tsuru Gakuen | Stair structure |
| CN203475737U (en) * | 2013-08-16 | 2014-03-12 | 威海奥华钢结构有限公司 | Prefabricated damping building stair structure |
| CN208718256U (en) * | 2018-07-13 | 2019-04-09 | 苏州瑞至通建筑科技有限公司 | A kind of damping reinforcement type precast stair |
| CN109025104A (en) * | 2018-09-27 | 2018-12-18 | 安徽品小院建筑科技有限公司 | A kind of assembled architecture modularization staircase structure and its construction technology |
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