CN112031298B - Reinforced concrete stair antidetonation reinforced structure - Google Patents
Reinforced concrete stair antidetonation reinforced structure Download PDFInfo
- Publication number
- CN112031298B CN112031298B CN202010902461.3A CN202010902461A CN112031298B CN 112031298 B CN112031298 B CN 112031298B CN 202010902461 A CN202010902461 A CN 202010902461A CN 112031298 B CN112031298 B CN 112031298B
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- layer
- strip
- stair
- concrete
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 38
- 239000004567 concrete Substances 0.000 claims abstract description 23
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 13
- 239000006059 cover glass Substances 0.000 claims 1
- 230000008961 swelling Effects 0.000 claims 1
- 230000008719 thickening Effects 0.000 abstract description 2
- 210000003128 head Anatomy 0.000 description 8
- 238000007596 consolidation process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 210000003786 sclera Anatomy 0.000 description 1
Images
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
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/18—Balustrades; Handrails
- E04F11/181—Balustrades
- E04F11/1836—Handrails of balustrades; Connections between handrail members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/18—Balustrades; Handrails
- E04F11/181—Balustrades
- E04F11/1851—Filling panels, e.g. concrete, sheet metal panels
- E04F11/1853—Glass panels
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a reinforced concrete stair anti-seismic reinforcing structure, which comprises a stair board, a corner reinforcing layer and protective glass, wherein the corner reinforcing layer penetrates through the interior of the stair board and is connected with the stair board, when a concrete stair is constructed, the corner reinforcing layer is added in the stair board, an edge strip is close to an inner ring, the corner reinforcing layer is attached to the position contacted with the rest of the outer surface of a main supporting layer through an angle attaching layer and is wound and reinforced, an inner expansion bag adjusts the change of the appearance of the main supporting layer, namely the part contacted with an extending basin is jacked, an extending angle pulled by an inner buckle is stressed, a stress core supports an annular reinforcing core, the annular reinforcing core is supported, the outer supporting angles are mutually overlapped to form a mutual force, so that the jointed concrete is fixed together, and the concrete can play a certain protection and thickening role when the concrete stair is constructed, when the concrete is subjected to external vibration force, the parts in the concrete are stacked through the change of the concrete to form certain supporting force.
Description
Technical Field
The invention belongs to the field of concrete, and particularly relates to a reinforced concrete stair earthquake-resistant reinforcing structure.
Background
At present, the stair with a certain radian is not attached to a side wall, can only be supported by the force of a platform plate, and is provided with the stair with a certain arc shape, an inner ring is compact and firm, the thickness of an outer ring needs to correspond to that of the inner ring, and after the radian of the outer ring is larger, and the outer ring is stretched relative to the inner ring, the compactness is not firm.
Based on the inventor, the existing reinforced concrete stair earthquake-resistant reinforcing structure mainly has the following defects, such as:
when the earth surface vibrates, the outer ring of the stair easily generates cracks through external vibration due to the fact that the outer ring is not supported by the side walls, the cracks extend from the outer ring to the inner ring, the cracks are not obvious and difficult to observe, and the stair can be easily broken when the stair is continuously used.
Therefore, a reinforced concrete stair earthquake-resistant reinforcing structure needs to be provided.
Disclosure of Invention
The problem that when the ground surface vibrates, cracks are easily generated by external vibration due to the fact that the outer ring of the stair is not supported by the side walls, the cracks extend from the outer ring to the inner ring, the propagated cracks are not obvious and are difficult to observe, and the stair is easy to break when the stair is continuously used is solved.
The invention relates to a purpose and an effect of a reinforced concrete stair anti-seismic reinforcing structure, which are achieved by the following specific technical means:
the structure of the device comprises a stair board, a corner reinforcing layer, a stair layer, handrails and protective glass.
The corner reinforcing layer runs through inside the stair board, the stair layer is connected with the stair board, protective glass installs in handrail surface and clearance fit, the protective glass bottom is connected with the stair board.
The corner reinforcing layer comprises a hammer type consolidation rod and an elastic winding body, and the elastic winding body is wound on the outer surface of the hammer type consolidation rod.
As a further improvement of the invention, the hammer type consolidation rod comprises a three-edge support, a main support layer, an extension strip, an inner fixing angle, a thin support edge, two extension strips and a support shell, wherein the three-edge support penetrates through the main support layer, the extension strip is connected with the extension strip and is of an integrated structure, the inner fixing angle is arranged on the outer surface of the extension strip, the thin support edge penetrates through the extension strip, the extension strip is arranged in the support shell, the number of the thin support edges is two, the number of the extension strips is two, and the extension strips are of an arc structure.
As a further improvement of the invention, the three-edge support comprises a support core, a top extension basin, a solid support layer and two bottom fixture blocks, wherein the support core penetrates through the solid support layer, the bottom fixture blocks are mounted on the outer surface of the solid support layer, one end, far away from the bottom fixture blocks, of the solid support layer is connected with the top extension basin, the bottom fixture blocks are in a trapezoidal structure, and the number of the top extension basins is two.
As a further improvement of the invention, the elastic winding body comprises a soft winding angle, an elastic strip, staggered blocks and a folding angle, the soft winding angle is connected with the elastic strip, the staggered blocks are arranged on the outer surface of the folding angle, the folding angle is positioned in the elastic strip, five staggered blocks are arranged, and six folding angles are arranged.
As a further improvement of the invention, the staggered-layer block comprises a stressed core, an extension layer, two spread angles and an inner buckle head, wherein the extension layer is attached to the outer surface of the spread angle, one end of the spread angle, which is far away from the extension layer, is connected with the stressed core, the spread angle is connected with the outer surface of the inner buckle head and is of an integrated structure, the extension layer is of a semi-arc structure, and the stressed core is of a spherical structure.
As a further improvement of the invention, the soft winding angle comprises a top end, a soft concave angle, an angle pasting layer and an inner expansion change bag, wherein the top end is connected with the inner expansion change bag, the outer surface of the inner expansion change bag is pasted with the angle pasting layer, the soft concave angle is embedded into the angle pasting layer, the inner expansion change bag is made of rubber materials and has certain elasticity, and the top end is of a spherical structure.
As a further improvement of the invention, the folding angle comprises an inner pocket angle, a ring fixing core and an outer supporting angle, the inner pocket angle is wound on the outer surface of the ring fixing core, one end of the inner pocket angle, which is far away from the ring fixing core, is connected with the outer supporting angle, two inner pocket angles are arranged, and the ring fixing core is of a cylindrical structure.
Compared with the prior art, the invention has the following beneficial effects:
when the concrete stair is built, a corner reinforcing layer is added in the stair board, the edge extending strips are close to the inner ring, the thin supporting strips support the extending thin strips and the edge extending strips to be connected, the main supporting layer is arranged at the position of the outer ring, the corner attaching layer is attached to the positions, contacted with the rest of the outer surface of the main supporting layer, of the main supporting layer to be wound and consolidated, the inner expansion bag of the corner attaching layer adjusts the change of the shape of the corner attaching layer, namely the part contacted with the extension basin, when the main supporting layer is cracked and turned together by the fractured concrete, the extension angles pulled by the inner buckling heads are stressed, the annular fixing core is supported by the stress core, the outer supporting angles are overlapped with each other to form a mutual force, the connected concrete is dragged and fixed together, the concrete stair can play a certain protection and thickening role when the concrete stair is built, and the internal parts are stacked by the change of the concrete under the external vibration force, a certain supporting force is formed.
Drawings
FIG. 1 is a schematic structural view of a reinforced concrete stair earthquake-resistant reinforcement structure of the present invention.
Fig. 2 is a schematic top view of an inner structure of a corner reinforcing layer according to the present invention.
Fig. 3 is a schematic front view of the internal structure of a hammer type sclera according to the present invention.
Fig. 4 is a schematic left-view internal structure diagram of a three-side bracket according to the present invention.
Fig. 5 is a schematic front view of an elastic winding body according to the present invention.
FIG. 6 is a schematic front view of an inner structure of a staggered block according to the present invention.
FIG. 7 is a schematic diagram of a right view internal structure of a soft winding angle according to the present invention.
Fig. 8 is a schematic view of a front view of an internal structure of a fold back angle according to the present invention.
In the figure: stair board-11, corner reinforcing layer-22, stair layer-33, handrail-44, protective glass-55, hammer type consolidation rod-mm 1, elastic winding body-mm 2, trilateral support-a 1, main support layer-a 2, extension thin strip-a 3, inner fixed angle-a 4, thin support edge-a 5, extension strip-a 6, support shell-a 7, support core-a 1a, top extension basin-a 1b, solid support layer-a 1c, bottom block-a 1d, soft winding angle-221, elastic strip-222, staggered block-223, folding angle-224, stressed core-gg 0, extension layer-gg 1, expansion angle-gg 2, inner head buckle-gg 3, top head-2211, soft concave angle-2212, sticking angle layer-2213, inner variable core-2214, inner variable core-101-102, and fixed ring core-102, And (4) an external supporting angle of-103.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example (b):
as shown in figures 1 to 8:
the invention provides a reinforced concrete stair earthquake-resistant reinforcing structure which comprises a stair board 11, a corner reinforcing layer 22, a stair layer 33, handrails 44 and protective glass 55.
The corner reinforcing layer 22 penetrates through the interior of the stair board 11, the stair layer 33 is connected with the stair board 11, the protective glass 55 is mounted on the outer surface of the handrail 44 in clearance fit, and the bottom end of the protective glass 55 is connected with the stair board 11.
The corner reinforcing layer 22 comprises a hammer type scleral rod mm1 and an elastic winding body mm2, wherein the elastic winding body mm2 is wound on the outer surface of the hammer type scleral rod mm 1.
Wherein the hammer type consolidation rod mm1 comprises a three-edge support a1, a main support layer a2, an extending thin strip a3, an inner fixing angle a4, a thin support edge a5, an extending strip a6 and a support shell a7, the three-edge support a1 penetrates through the main support layer a2, the extending thin strip a3 is connected with the extending strip a6 and is in an integrated structure, the inner fixing angle a4 is arranged on the outer surface of the extending thin strip a4, the thin support edge a4 penetrates through the extending thin strip a4, the extending thin strip a4 is arranged inside the support shell a4, the number of the extending thin strip a4 is two, the extending thin strip a4 is in an arc structure, the main support layer a4 is mainly used for fixing and supporting the inner layer, the extending thin strip a4 and the extending strip a4 give a certain auxiliary force to the support shell a4, so that the support strip a can stabilize the extending thin strip a4, and the extending thin strip a4 is a staggered extension distance for preventing the extending thin strip a4 from being extended, so that the outer-layer object can be more stably supported.
The three-side support a1 comprises a support core a1a, a top extension basin a1b, a solid support layer a1c and a bottom clamping block a1d, wherein the support core a1a penetrates through the solid support layer a1c, a bottom clamping block a1d is mounted on the outer surface of the solid support layer a1c, one end, away from the bottom clamping block a1d, of the solid support layer a1c is connected with the top extension basin a1b, the bottom clamping block a1d is of a trapezoidal structure, two top extension basins a1b are arranged, the top extension basin a1b can extend the supporting force of an object to be connected, the force of the top extension basin can be extended and expanded, the bottom clamping block a1d is moved to prevent the connected object from being connected with the mounting position, and the support core a1a is used for reinforcing the outer layer.
Wherein, the bullet is around body mm2 including soft angle 221, bullet strip 222, staggered floor piece 223, fold back angle 224, soft angle 221 of winding is connected with bullet strip 222, staggered floor piece 223 is installed in fold back angle 224 surface, fold back angle 224 is located inside bullet strip 222, staggered floor piece 223 is equipped with five, fold back angle 224 is equipped with six, staggered floor piece 223 has restricted the activity angle and the activity distance that link up the object, fold back angle 224 and let the outer layer of its installation change anyhow and pull, can both be in its scope of tearing, when it loses external resistance, in time return.
The staggered layer block 223 comprises a stressed core gg0, an extension layer gg1, an expansion angle gg2 and an inner buckle head gg3, the extension layer gg1 is attached to the outer surface of an expansion angle gg2, one end, far away from the extension layer gg1, of the expansion angle gg2 is connected with the stressed core gg0, the expansion angle gg2 is connected with the outer surface of the inner buckle head gg3 and is of an integrated structure, the extension layer gg1 is of a semi-arc structure, the expansion angle gg2 is provided with two expansion angles, the stressed core gg0 is of a spherical structure, the inner buckle head gg3 can give a fixed pulling force to an engaged object, the expansion angle gg2 can change along with the change of the object, and the stressed core gg0 gives an overall fixed stressed point.
The soft winding angle 221 includes a top end 2211, a soft concave angle 2212, an angle layer 2213, an inner expansion change bag 2214, the top end 2211 is connected with the inner expansion change bag 2214, the outer surface of the inner expansion change bag 2214 is attached with the angle layer 2213, the soft concave angle 2212 is embedded into the angle layer 2213, the inner expansion change bag 2214 is made of rubber materials and has certain elasticity, the top end 2211 is of a sphere structure, the inner expansion change bag 2214 can enable force applied by the outside to change along with the change, the angle layer 2213 can be better attached to a connection object and deforms together with the shape of the angle layer 2213, and the top end 2211 can effectively clamp the connection object.
The folding angle 224 comprises an inner pocket angle 101, a ring fixing core 102 and two outer supporting angles 103, the inner pocket angle 101 is wound on the outer surface of the ring fixing core 102, one end, far away from the ring fixing core 102, of the inner pocket angle 101 is connected with the outer supporting angles 103, the inner pocket angle 101 is provided with two outer supporting angles, the ring fixing core 102 is of a cylindrical structure, the outer supporting angles 103 can extend the stress effect of the inner pocket angle 101, and the ring fixing core 102 can change along with the change of the inner pocket angle 101.
The specific use mode and function of the embodiment are as follows:
in the invention, when building a concrete stair, a corner reinforcing layer 22 is added in a stair board 11, a top extension basin a1b is used for supporting the upper half part of concrete, a bottom block a1d is used for preventing a supporting core a1a from sliding when fixed, an extension strip a6 is close to an inner ring, a thin supporting edge a5 of the corner reinforcing layer supports an extension strip a3 and the extension strip a6 to be jointed, a main supporting layer a2 is arranged at the position of an outer ring, a top end 2211 is buckled on a main supporting layer a2, the corner reinforcing layer 2213 is clung to the rest contacted position of the outer surface of the main supporting layer a2 to wind and fix the corner reinforcing layer, an inner expansion bladder 2214 is used for adjusting the change of the shape of the corner reinforcing layer, when the equipment is influenced by external vibration, the outer ring part of the corner reinforcing layer 22 which is firstly cracked, namely the part contacted with the top extension basin a1b, when the main supporting layer a7 is influenced by external vibration, the inner expansion bladder 539 is used for cracking and the reinforcing head 2 is used for cracking and carrying out the change of the angle, the ring fixing core 102 is supported by the stress core gg0, and the elastic strip 222 can follow the external concrete to change direction to a certain extent through the direction change matching of the inner pocket angle 101 and the outer support angle 103, but can be supported when reaching a certain tearing range, so that the outer support angles 103 are overlapped to form a mutual force, and the connected concrete is dragged to be fixed together.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (1)
1. The utility model provides a reinforced concrete stair antidetonation reinforced structure, its structure includes stair board (11), corner back up coat (22), stair layer (33), handrail (44), cover glass (55), its characterized in that:
the corner reinforcing layer (22) penetrates through the interior of the stair board (11), the stair layer (33) is connected with the stair board (11), the protective glass (55) is mounted on the outer surface of the handrail (44) and in clearance fit with the handrail, and the bottom end of the protective glass (55) is connected with the stair board (11);
the corner reinforcing layer (22) comprises a hammer type scleral (mm1) and an elastic winding body (mm2), wherein the elastic winding body (mm2) is wound on the outer surface of the hammer type scleral (mm 1);
the hammer type scleral stick (mm1) comprises a three-edge support (a1), a main support layer (a2), an extending thin strip (a3), an inner fixing angle (a4), a thin support edge (a5), an extending strip (a6) and a support shell (a7), wherein the three-edge support (a1) penetrates through the main support layer (a2), the extending thin strip (a3) is connected with the extending strip (a6) and is of an integrated structure, the inner fixing angle (a4) is installed on the outer surface of the extending thin strip (a3), the thin support edge (a5) penetrates through the extending thin strip (a3), and the extending thin strip (a3) is installed inside the support shell (a 7);
the three-edge support (a1) comprises a support core (a1a), a top extension basin (a1b), a solid support layer (a1c) and a bottom clamping block (a1d), wherein the support core (a1a) penetrates through the solid support layer (a1c), the bottom clamping block (a1d) is mounted on the outer surface of the solid support layer (a1c), and one end, far away from the bottom clamping block (a1d), of the solid support layer (a1c) is connected with the top extension basin (a1 b);
the spring winding body (mm2) comprises a soft winding angle (221), a spring strip (222), a staggered block (223) and a folding angle (224), wherein the soft winding angle (221) is connected with the spring strip (222), the staggered block (223) is installed on the outer surface of the folding angle (224), and the folding angle (224) is located inside the spring strip (222);
the staggered layer block (223) comprises a stress core (gg0), an extension layer (gg1), an expansion angle (gg2) and an inner buckle head (gg3), wherein the extension layer (gg1) is attached to the outer surface of the expansion angle (gg2), one end, away from the extension layer (gg1), of the expansion angle (gg2) is connected with the stress core (gg0), and the expansion angle (gg2) is connected with the outer surface of the inner buckle head (gg3) and is of an integrated structure;
the soft winding angle (221) comprises a top end (2211), a soft concave angle (2212), an angle sticking layer (2213) and an inner expansion variable bag (2214), the top end (2211) is connected with the inner expansion variable bag (2214), the angle sticking layer (2213) is attached to the outer surface of the inner expansion variable bag (2214), and the soft concave angle (2212) is embedded into the angle sticking layer (2213);
the folding angle (224) comprises an inner pocket angle (101), a ring fixing core (102) and an outer supporting angle (103), the inner pocket angle (101) is wound on the outer surface of the ring fixing core (102), and one end, far away from the ring fixing core (102), of the inner pocket angle (101) is connected with the outer supporting angle (103);
when building concrete stairs, adding a corner reinforcing layer (22) in a stair board (11), wherein a top extension basin (a1b) of the corner reinforcing layer is used for supporting the upper half part of concrete, a bottom fixture block (a1d) is used for preventing a supporting core (a1a) from sliding when being fixed, a extension edge strip (a6) is close to an inner ring, a thin support edge strip (a5) of the corner reinforcing layer supports an extension thin strip (a3) and an extension edge strip (a6) to be connected, a main support layer (a2) is arranged at the position of an outer ring, a top end head (2211) is buckled on a main support layer (a2), the corner reinforcing layer (2213) is attached to the position contacted with the rest of the outer surface of the main support layer (a2) to be wound and consolidated, an inner swelling bag (2214) of the corner reinforcing layer adjusts the change of the appearance of the main support layer, when the equipment is influenced by external vibration, the reinforcing layer (22) is firstly, the outer ring part of the corner reinforcing layer (a) is contacted with a crack, and the outer ring (b) is also cracked when the top extension basin (a) is contacted with the top extension edge strip (a 586), the angle of spread (gg2) pulled by the inner buckle head (gg3) is stressed, the ring fixing core (102) is supported by the stress core (gg0), and the inner pocket angle (101) is matched with the outer supporting angle (103) in a turning way, so that the elastic strip (222) can follow the turning of external concrete to a certain degree, but when the external concrete reaches a certain pulling-off range, the elastic strip can be supported, the outer supporting angles (103) are overlapped with each other to form a mutual force, and the linked concrete is dragged to be fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010902461.3A CN112031298B (en) | 2020-09-01 | 2020-09-01 | Reinforced concrete stair antidetonation reinforced structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010902461.3A CN112031298B (en) | 2020-09-01 | 2020-09-01 | Reinforced concrete stair antidetonation reinforced structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112031298A CN112031298A (en) | 2020-12-04 |
| CN112031298B true CN112031298B (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010902461.3A Expired - Fee Related CN112031298B (en) | 2020-09-01 | 2020-09-01 | Reinforced concrete stair antidetonation reinforced structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365303Y (en) * | 1999-01-08 | 2000-02-23 | 韦连文 | Building electric staircase |
| JP2003041729A (en) * | 2001-07-27 | 2003-02-13 | Bunka Shutter Co Ltd | Staircase structure |
| CN202401777U (en) * | 2011-11-21 | 2012-08-29 | 南京盛圆土木工程高科技有限公司 | Anti-seismic stabilizing and reinforcing structure for building concrete stairs |
| CN103603468A (en) * | 2013-11-06 | 2014-02-26 | 苏州金螳螂建筑装饰股份有限公司 | Non-support steel-structure spiral staircase |
| JP5756000B2 (en) * | 2011-11-09 | 2015-07-29 | ミサワホーム株式会社 | Spiral staircase mounting structure |
| CN110359649A (en) * | 2018-03-26 | 2019-10-22 | 诸暨市碧涵精工模塑有限公司 | A kind of large span is without support steel structure spiral stairs prestressed construction technology |
| CN110656768A (en) * | 2019-07-24 | 2020-01-07 | 黄瑞鑫 | Shallow foundation stair revolving stage building is rectified and is consolidated and prevent structure of ftractureing |
-
2020
- 2020-09-01 CN CN202010902461.3A patent/CN112031298B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365303Y (en) * | 1999-01-08 | 2000-02-23 | 韦连文 | Building electric staircase |
| JP2003041729A (en) * | 2001-07-27 | 2003-02-13 | Bunka Shutter Co Ltd | Staircase structure |
| JP5756000B2 (en) * | 2011-11-09 | 2015-07-29 | ミサワホーム株式会社 | Spiral staircase mounting structure |
| CN202401777U (en) * | 2011-11-21 | 2012-08-29 | 南京盛圆土木工程高科技有限公司 | Anti-seismic stabilizing and reinforcing structure for building concrete stairs |
| CN103603468A (en) * | 2013-11-06 | 2014-02-26 | 苏州金螳螂建筑装饰股份有限公司 | Non-support steel-structure spiral staircase |
| CN110359649A (en) * | 2018-03-26 | 2019-10-22 | 诸暨市碧涵精工模塑有限公司 | A kind of large span is without support steel structure spiral stairs prestressed construction technology |
| CN110656768A (en) * | 2019-07-24 | 2020-01-07 | 黄瑞鑫 | Shallow foundation stair revolving stage building is rectified and is consolidated and prevent structure of ftractureing |
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|---|---|
| CN112031298A (en) | 2020-12-04 |
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Granted publication date: 20220208 |