Novel support-free decorative stair and installation and construction method thereof

Abstract

The invention relates to a novel support-free decorative stair and a mounting construction method thereof, and relates to the technical field of building decoration engineering, the support-free decorative stair comprises a plurality of middle platforms, the middle platforms are located between an upper floor and a lower floor in the vertical direction, the middle platforms are sequentially arranged at intervals in the vertical direction, and the middle platforms are connected with a wall surface; prefabricated stairs are arranged between the upper-layer floor and the adjacent middle platform, between the lower-layer floor and the adjacent middle platform and between every two adjacent middle platforms, one end of each prefabricated stair is connected with the corresponding middle platform, and the other end of each prefabricated stair is connected with the corresponding upper-layer floor or the corresponding lower-layer floor or the corresponding middle platform. A plurality of hoisting assemblies are arranged between the middle platform and the upper floor, the lower ends of the hoisting assemblies are connected with the middle platform, and the upper ends are connected with the upper floor. The hanging and pulling assembly serves as a vertical support of the support-free decorative stair, and the stability of the whole support-free decorative stair is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of building decoration engineering, and particularly relates to a new type of unsupported decorative staircase and its installation and construction method. Background Art

[0002] Currently, in the development of the existing construction industry, more and more construction enterprises begin to focus on the renovation of existing buildings. In the renovation of existing buildings, as a core component of vertical transportation, the installation and construction of staircases often face problems such as complex structural reinforcement and limited construction space.

[0003] The construction of existing staircases mostly adopts the method of cast-in-place concrete or steel structure welding on site, which requires a large number of support structures, resulting in more occupation of the internal space of existing buildings. Moreover, such construction causes greater disturbance to the structure of existing buildings, especially difficult to implement in high-rise or large-span scenarios.

[0004] In the existing unsupported staircase technology, most of them adopt prefabricated steel structure staircases, that is, prefabricated steel structure staircases are erected between the upper and lower floors, and then both the upper and lower ends of the prefabricated steel structure staircases are connected to the corresponding floors.

[0005] After the prefabricated steel structure staircase is installed, there is no support structure such as columns between the prefabricated steel structure staircase and the lower floor, which leads to insufficient stability of the prefabricated steel structure staircase at its middle position. In particular, when the span between the lower floor and the upper floor is large, at this time the length of the prefabricated steel structure staircase is long, then without additional support, the stability of the prefabricated steel structure staircase is poor and it is difficult to meet the actual use requirements. Summary of the Invention

[0006] The present application provides a new type of unsupported decorative staircase and its installation and construction method, and its purpose is to increase the stability of the unsupported decorative staircase.

[0007] In a first aspect, a new type of unsupported decorative staircase provided by the present application adopts the following technical solution: A new type of unsupported decorative staircase includes a plurality of intermediate platforms. The intermediate platforms are located between the upper floor and the lower floor in the vertical direction, and the plurality of intermediate platforms are arranged at intervals in the vertical direction. The intermediate platforms are connected to the wall; prefabricated staircases are provided between the upper floor and the adjacent intermediate platform, between the lower floor and the adjacent intermediate platform, and between two adjacent intermediate platforms. One end of the prefabricated staircase is connected to the intermediate platform, and the other end is connected to the corresponding upper floor or lower floor or the intermediate platform; a plurality of suspension components are provided between the intermediate platform and the upper floor. The lower end of the suspension component is connected to the intermediate platform, and the upper end is connected to the upper floor.

[0008] By adopting the above technical solution, a plurality of intermediate platforms are arranged between the upper floor slab and the lower floor slab. Prefabricated stairs are arranged between the intermediate platform and the adjacent upper floor slab, lower floor slab, and adjacent intermediate platforms. The two ends of the prefabricated stairs are respectively connected to the corresponding intermediate platform, upper floor slab, or lower floor slab to form a complete stair structure, meeting the basic passage function of the unsupported decorative stairs.

[0009] On this basis, since the intermediate platform is connected to the wall, a suspension component is arranged between the intermediate platform and the upper floor slab. The two ends of the suspension component are respectively connected to the intermediate platform and the upper floor slab. At this time, the setting of the suspension component can increase the stability of the intermediate platform, so that the intermediate platform can effectively share the load of the unsupported decorative stairs.

[0010] Therefore, the vertical support of the unsupported decorative stairs can be replaced by the suspension component, thereby reducing the space occupied by the unsupported decorative stairs, achieving the unsupported effect, and making the unsupported decorative stairs more beautiful and generous.

[0011] Optionally, the suspension component includes a suspension rod, a first suspension ear, and a second suspension ear. The first suspension ear is arranged on the intermediate platform, the second suspension ear is arranged on the upper floor slab, the lower end of the suspension rod is connected to the first suspension ear, and the upper end is connected to the second suspension ear.

[0012] By adopting the above technical solution, the suspension component includes a suspension rod, a first suspension ear, and a second suspension ear. The structural design of the suspension component enables the intermediate platform to be firmly connected to the upper floor slab through the suspension rod, thereby effectively sharing the load of the prefabricated stairs and improving the stability of the entire unsupported decorative stair structure.

[0013] At the same time, with such a structural setting of the suspension component, it is convenient for the rapid assembly of the suspension component, which can quickly realize the assembly of the unsupported decorative stairs and reduce the on-site construction time.

[0014] Optionally, the intermediate platform, the upper floor slab, and the lower floor slab are all detachably connected to the corresponding prefabricated stairs.

[0015] By adopting the above technical solution, the intermediate platform, the upper floor slab, and the lower floor slab are all detachably connected to the corresponding prefabricated stairs. This design makes the installation and maintenance of the unsupported decorative stairs more flexible and convenient, can be quickly disassembled and assembled according to actual needs, improves the reuse rate of components, and reduces the construction difficulty and cost.

[0016] Optionally, connecting steel members are arranged at both ends of the prefabricated stairs, and embedded steel members are arranged on the intermediate platform, the upper floor slab, and the lower floor slab. The connecting steel members are detachably connected to the corresponding embedded steel members.

[0017] By adopting the above technical solution, connecting steel members are provided at both ends of the precast staircase, and embedded steel members are provided on the intermediate platform, upper floor slab and lower floor slab, and detachable connection is achieved through the connecting steel members and the embedded steel members. This design not only facilitates the on-site assembly of the unsupported decorative staircase, but also improves the construction efficiency, and at the same time ensures the stability and reliability of the structure of the unsupported decorative staircase.

[0018] Optionally, a cable assembly is provided between the precast staircase and the upper floor slab. The cable assembly includes a plurality of cables. The cables are arranged vertically. The lower ends of the cables are connected to the corresponding precast staircase, and the upper ends are connected to the upper floor slab.

[0019] By adopting the above technical solution, through the arrangement of a plurality of cables in the cable assembly, both ends of the plurality of cables are respectively connected to the precast staircase and the upper floor slab. The structural design of the cable assembly can not only provide additional tensile support for the precast staircase, but also prevent the precast staircase from shaking or displacing during use, thereby improving the safety and reliability of the entire structure of the unsupported decorative staircase.

[0020] Optionally, a first tensioning ring is provided on the precast staircase, and a second tensioning ring is provided on the upper floor slab. The first tensioning ring, the second tensioning ring and the cables are arranged in one-to-one correspondence. The lower end of the cable passes through the corresponding first tensioning ring, and the upper end passes through the corresponding second tensioning ring; a plurality of cable fixing members are arranged in the middle of the cable along its length direction. The cable fixing members are detachably connected to the cable, and both ends of the cable are detachably connected to the corresponding cable fixing members.

[0021] By adopting the above technical solution, with the cooperation of the first tensioning ring, the second tensioning ring and the cable, after the two ends of the cable respectively pass through the first tensioning ring and the second tensioning ring, at this time under the action of the cable fixing member, both ends of the cable will be fixed to the middle of the cable, which ensures that the length of the cable can meet the requirements and ensures that the cable is in a taut state. This design can effectively enhance the stability of the precast staircase, prevent the cable from shaking or displacing during use, and ensure the safety and reliability of the structure of the unsupported decorative staircase.

[0022] Optionally, a handrail cable assembly is further provided on the precast staircase. The handrail cable assembly includes a handrail cable. The length direction of the handrail cable is arranged along the length direction of the corresponding precast staircase. The handrail cable is sequentially connected to a plurality of the cables along its length direction.

[0023] By adopting the above technical solution, through the arrangement of the handrail cable in the handrail cable assembly, the handrail cable is arranged along the length direction of the precast staircase and connected to a plurality of cables, so that a stable handrail structure can be formed on the precast staircase. At this time, the handrail cable can not only provide a gripping point for the user, enhance the safety of using the unsupported decorative staircase, but also further improve the overall stability of the precast staircase through the connection with the cables.

[0024] Optionally, the handrail rope assembly further includes a plurality of connecting members, which are arranged in one-to-one correspondence with the pulling ropes. The connecting members are arranged on the corresponding pulling ropes, and the handrail rope is detachably connected to the plurality of connecting members in sequence along its own length direction.

[0025] By adopting the above technical solution, a connecting member is provided between the handrail rope and the pulling rope. Under the action of the connecting member, the handrail rope is connected to the pulling rope, which ensures the stability of the installation of the handrail rope.

[0026] Since a plurality of connecting members are provided and the connecting members are arranged in one-to-one correspondence with the pulling ropes, the handrail rope can be sequentially connected to the plurality of connecting members along its own length direction, which facilitates the connection of the handrail rope to all the corresponding pulling ropes and improves the stability and convenience of the installation of the handrail rope.

[0027] The detachable connection between the handrail rope and the connecting member facilitates the installation and maintenance of the handrail rope, improves the construction efficiency, and also facilitates the replacement or position adjustment of the handrail rope in the later stage, enhancing the flexibility and practicability of the handrail rope.

[0028] Optionally, the connecting member is slidably connected to the corresponding pulling rope along the length direction of the corresponding pulling rope.

[0029] By adopting the above technical solution, the design of the slidable connection of the connecting member along the length direction of the pulling rope enables the position of the connecting member to be adjustable, and thus the position of the handrail rope can be flexibly adjusted to ensure the stability and comfort of the handrail rope in different installation environments.

[0030] In a second aspect, a method for installing and constructing a novel unsupported decorative staircase provided by the present application adopts the following technical solution: A method for installing and constructing a novel unsupported decorative staircase, which is used for the installation and construction of the above-mentioned novel unsupported decorative staircase, includes the following steps: Positioning and layout: Mark the installation position of the intermediate platform on the wall according to the design drawing; Platform installation: Fix the intermediate platform to the wall to ensure that the intermediate platforms are equidistantly distributed in the vertical direction; Installation of the hanging and pulling assembly: Install the hanging and pulling assembly between the upper floor slab and the intermediate platform; Lifting and installation of the precast staircase: Lift the precast staircase to the installation position, and install the two ends of the precast staircase to the corresponding intermediate platform or upper floor slab or lower floor slab respectively.

[0031] By adopting the above technical solutions, first, by marking the installation positions of the intermediate platforms on the wall surface, it is ensured that the intermediate platforms are equidistantly distributed in the vertical direction, improving the installation accuracy and aesthetics. Secondly, fixing the intermediate platforms to the wall surface enhances the stability of the intermediate platforms and provides a reliable support foundation for subsequent installations. Then, installing the suspension components between the upper floor slab and the intermediate platforms effectively shares the weight of the precast stairs and avoids the problem of space occupation caused by traditional column supports. Finally, lifting the precast stairs to the installation positions and connecting them to the corresponding intermediate platforms or upper floor slabs or lower floor slabs realizes modular installation, improves the construction efficiency, and is also convenient for later adjustment and maintenance.

[0032] Therefore, such an installation construction method can realize the installation of the above-mentioned new type of unsupported decorative staircase and improve the stability of the unsupported decorative staircase after installation.

[0033] In summary, the present application includes at least one of the following beneficial technical effects: 1. By arranging the suspension components between the intermediate platforms and the upper floor slabs in the present application, the stability of the intermediate platforms is effectively increased, and thus the stability of the entire unsupported decorative staircase is increased. At the same time, since the suspension components serve as the vertical supports of the unsupported decorative staircase and the suspension components occupy less space and are convenient to assemble, this can effectively reduce the space occupation of the unsupported decorative staircase.

[0034] 2. In the present application, the intermediate platforms and the precast stairs adopt a detachable connection method, which is convenient for the on-site installation and later maintenance of the unsupported decorative staircase, can significantly improve the construction efficiency, and reduce the disturbance to the existing building structure.

[0035] 3. By using the suspension components as the vertical supports of the unsupported decorative staircase in the present application, and the suspension components occupy less space and are convenient to assemble, this can effectively reduce the space occupation of the unsupported decorative staircase, making the unsupported decorative staircase have a more beautiful and generous decorative effect.

[0036] 4. Through the arrangement of the rope pulling components in the present application, the force borne by the suspension components can be shared, thereby improving the stability of the entire unsupported decorative staircase.

[0037] 5. Through the coordinated arrangement of the rope pulling components and the handrail components in the present application, a handrail rope can be added to the precast stairs, so that the handrail rope can provide a grasping point for users and enhance the safety of using the stairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the unsupported decorative staircase according to Embodiment 1 of the present application.

[0039] Figure 2 It is a schematic diagram of the overall structure of the suspension components according to Embodiment 1 of the present application.

[0040] Figure 3 It is a schematic diagram of the overall structure of the assembly component between the lower floor slab and the adjacent precast staircase in Embodiment 1 of the present application.

[0041] Figure 4 It is a schematic diagram of the overall structure of the assembly component in Embodiment 1 of the present application.

[0042] Figure 5 It is a partial structural schematic diagram of the unsupported decorative staircase in Embodiment 2 of the present application.

[0043] Figure 6 It is a schematic diagram of the overall structure of the cable pulling component in Embodiment 2 of the present application.

[0044] Figure 7 It is a schematic diagram of the overall structure of the connecting piece and the rotating piece in Embodiment 2 of the present application.

[0045] Figure 8 It is an exploded structural schematic diagram of the connecting piece and the rotating piece in Embodiment 2 of the present application.

[0046] Figure 9 It is a sectional structural schematic diagram of the connecting piece and the rotating piece in Embodiment 2 of the present application.

[0047] Figure 10 It is a partial structural schematic diagram of the unsupported decorative staircase in Embodiment 3 of the present application.

[0048] In the figure, 1, intermediate platform; 2, precast staircase; 3, suspension and pulling component; 31, suspension rod; 32, first lifting lug; 33, second lifting lug; 4, assembly component; 41, embedded steel part; 411, connecting plate; 412, steel plate; 413, embedded bolt; 42, connecting steel part; 421, fixing plate; 422, insertion plate; 423, slot; 5, cable pulling component; 51, cable; 511, fixed coil; 512, tensioning coil; 52, first tensioning ring; 53, second tensioning ring; 54, cable fixing part; 55, first sliding rod; 56, second sliding rod; 6, handrail rope component; 61, handrail rope; 62, connecting piece; 621, first plate; 6211, first hole; 622, first bent rod; 623, first nut; 624, first clamping hole; 625, second plate; 6251, second hole; 626, second bent rod; 627, second nut; 628, second clamping hole; 63, rotating piece; 631, first mounting plate; 6311, first relief hole; 6312, sleeve; 6313, threaded hole; 632, second mounting plate; 6321, second relief hole; 6322, insertion post; 6323, relief groove; 6324, through hole; 633, fastening bolt; 100, upper floor slab; 101, steel beam; 200, lower floor slab. Detailed implementation manners

[0049] The following will further elaborate on this application in conjunction with the appended Figure 1 - appended Figure 10 drawings to provide a more detailed description.

[0050] Embodiment 1: A novel unsupported decorative staircase. Referring to Figure 1 the drawings, it includes several intermediate platforms 1. The intermediate platforms 1 are vertically located between the upper floor slab 100 and the lower floor slab 200. The several intermediate platforms 1 are arranged at intervals in the vertical direction, and the intermediate platforms 1 are connected to the wall of the existing building. A plurality of suspension components 3 are provided between the intermediate platform 1 and the upper floor slab 100. The lower end of the suspension component 3 is connected to the corresponding intermediate platform 1, and the upper end is connected to the upper floor slab 100. Prefabricated stairs 2 are provided between the intermediate platform 1 and the adjacent upper floor slab 100, between the intermediate platform 1 and the adjacent lower floor slab 200, and between two adjacent intermediate platforms 1. The length direction of the prefabricated stairs 2 is inclined downward. One end of the prefabricated stairs 2 is connected to the intermediate platform 1, and the other end is connected to the corresponding upper floor slab 100 or lower floor slab 200 or intermediate platform 1.

[0051] Under the action of the several intermediate platforms 1, the several prefabricated stairs 2 can be connected in sequence, thereby forming a complete unsupported decorative staircase between the upper floor slab 100 and the lower floor slab 200, and further meeting the basic functions of the unsupported decorative staircase.

[0052] Among them, since the intermediate platform 1 is connected to the wall of the existing building, the intermediate platform 1 itself can be stably installed on the wall, thereby reducing the internal stress of the entire unsupported decorative staircase and improving the stability of the unsupported decorative staircase. And by adding the suspension component 3 on the intermediate platform 1, with both ends of the suspension component 3 connected to the intermediate platform 1 and the upper floor slab 100 respectively, the installation stability of the intermediate platform 1 can be further increased, and thus the stability of the unsupported decorative staircase can be further increased. Referring to Figure 1 the drawings, in this embodiment, the prefabricated stairs 2 are made of steel structure stairs. The steel structure stairs are convenient for assembly and transportation, which can improve the convenience of assembling the unsupported decorative staircase and reduce the impact on the existing building.

[0053] Referring to Figure 1 the drawings, in this embodiment, the connection between the intermediate platform 1 and the wall of the existing building is achieved by using embedded parts in cooperation with chemical anchor bolts, which enables the intermediate platform 1 to be stably installed, and thus increases the stability of the unsupported decorative staircase.

[0054] Referring to Figure 1 the drawings, in this embodiment, at least one intermediate platform 1 is provided with a suspension component 3. The number of the suspension components 3 and the number of the intermediate platforms 1 equipped with the suspension components 3 are selected according to the actual situation, with the design requirement of ensuring sufficient stability of the unsupported decorative staircase.

[0055] Refer to Figure 2 , the suspension and pulling assembly 3 includes a suspension rod 31, a first lifting lug 32 and a second lifting lug 33. The first lifting lug 32 is embedded in the corresponding intermediate platform 1, the second lifting lug 33 is connected to the steel beam 101 of the upper floor slab 100. The first lifting lug 32 and the second lifting lug 33 are arranged directly opposite in the vertical direction. The suspension rod 31 is vertically arranged between the first lifting lug 32 and the second lifting lug 33, and the lower end of the suspension rod 31 is connected to the first lifting lug 32, and the upper end is connected to the second lifting lug 33.

[0056] Under the action of the suspension rod 31, the distance between the corresponding intermediate platform 1 and the upper floor slab 100 can be effectively maintained. At the same time, the suspension rod 31 can pull the corresponding intermediate platform 1 to realize the function of the suspension and pulling assembly 3.

[0057] Refer to Figure 2 , in this embodiment, the suspension rod 31 is a finished steel suspension rod 31, which has high strength and tensile performance. The first lifting lug 32 is installed on the corresponding intermediate platform 1 by embedding. The second lifting lug 33 is installed on the steel beam 101 of the upper floor slab 100 by welding or bolt connection. In order to improve the reliability of the connection, the suspension rod 31 is connected to the first lifting lug 32 and the second lifting lug 33 by threaded connection or pin connection.

[0058] Refer to Figure 1 and Figure 3 , the intermediate platform 1, the upper floor slab 100 and the lower floor slab 200 are all detachably connected to the corresponding precast staircase 2.

[0059] Refer to Figure 1 and Figure 3 , in this embodiment, assembly components 4 are provided between the intermediate platform 1, the upper floor slab 100 and the lower floor slab 200 and the corresponding precast staircase 2 respectively, and the assembly components 4 between the intermediate platform 1 and the corresponding precast staircase 2, between the upper floor slab 100 and the corresponding precast staircase 2, and between the lower floor slab 200 and the corresponding precast staircase 2 are all the same.

[0060] Refer to Figure 1 and Figure 3 , taking the assembly component 4 between the lower floor slab 200 and the precast staircase 2 in this embodiment as an example for illustration. The assembly component 4 includes a connecting steel member 42, and an embedded steel member 41 is arranged on the lower floor slab 200. The embedded steel member 41 is detachably connected to the connecting steel member 42.

[0061] Refer to Figure 3 and Figure 4, in this embodiment, the embedded steel member 41 includes a connecting plate 411, a steel plate 412 and a plurality of embedded bolts 413. There are two connecting plates 411, and both of the two connecting plates 411 are vertically arranged on the upper side of the steel plate 412, and the two connecting plates 411 are arranged at intervals along the width direction of the precast staircase 2. The steel plate 412 is arranged on the upper side of the lower floor slab 200, and the steel plate 412 is in contact with the lower floor slab 200. A plurality of embedded bolts 413 are all vertically installed on the steel plate 412, and the lower ends of the embedded bolts 413 extend into the lower floor slab 200.

[0062] Referring to Figure 3 and Figure 4 , the connecting steel member 42 includes a fixing plate 421 and two inserting plates 422. The fixing plate 421 is fixedly connected to one end of the corresponding precast staircase 2. The inserting plates 422 are vertically arranged. The inserting plates 422 are vertically arranged on the lower side of the fixing plate 421, and both of the two inserting plates 422 are fixedly connected to the fixing plate 421. The two inserting plates 422 are arranged at intervals along the width direction of the precast staircase 2, and a slot 423 is formed between the two inserting plates 422.

[0063] Referring to Figure 3 and Figure 4 , when the connecting steel member 42 is connected to the corresponding embedded steel member 41, the connecting steel member 42 and the embedded steel member 41 are inserted vertically. At this time, both of the two connecting plates 411 are inserted into the slot 423. The connecting plates 411 and the inserting plates 422 are arranged in one-to-one correspondence, and the connecting plates 411 and the corresponding inserting plates 422 are connected by bolts or pins.

[0064] The implementation principle of the embodiment of the present application is as follows: By arranging the intermediate platform 1 and the precast staircase 2, a non-supporting decorative staircase is formed, which meets the basic functions of the non-supporting decorative staircase. Since the suspension assembly 3 connects the intermediate platform 1 and the upper floor slab 100 through the suspender 31, at this time, the suspender 31 provides an upward pulling force for the corresponding intermediate platform 1, offsetting the gravity of the corresponding intermediate platform 1 and also offsetting the force exerted on the intermediate platform 1 by the corresponding precast staircase 2, which can improve the stability of the intermediate platform 1 and thus improve the stability of the entire non-supporting decorative staircase.

[0065] Since the suspension assembly 3 can serve as the vertical support of the non-supporting decorative staircase, and the structure of the suspension assembly 3 is simple, and the installation and construction are convenient, this makes the construction of the non-supporting decorative staircase have less impact on the existing building and reduces the impact on the stability of the existing building itself.

[0066] This embodiment also discloses an installation and construction method for a new type of non-supporting decorative staircase, including the following steps: S1. Positioning and setting out: Mark the installation position of the intermediate platform 1 on the wall according to the design drawing.

[0067] S2. Platform installation: Fix the intermediate platform 1 to the wall of the existing building to ensure that the intermediate platforms 1 are equidistantly distributed in the vertical direction.

[0068] Specifically, use chemical anchor bolts to penetrate the wall of the existing building, and form a rigid connection node between the chemical anchor bolts and the embedded parts of the intermediate platform 1.

[0069] S3. Assembly of the suspension and tension component 3: Install the suspension and tension component 3 between the upper floor slab 100 and the intermediate platform 1.

[0070] Specifically, first embed the first lifting lug 32 into the intermediate platform 1, fix the second lifting lug 33 on the steel beam 101 of the upper floor slab 100, and then connect one end of the suspender 31 to the first lifting lug 32 and the other end to the second lifting lug 33, so as to complete the assembly of the suspension and tension component 3.

[0071] During construction, use a hydraulic tensioner to apply a 10% - 15% over-tension force to the suspender 31 to eliminate the thread clearance and compensate for the creep effect. The verticality of the suspender 31 is corrected in real time by a total station to ensure that the tension vector is collinear with the gravity of the intermediate platform 1, and to minimize the risk of overturning of the intermediate platform 1 caused by eccentric loads, so that the suspender 31 system forms an active prestressed support system.

[0072] S4. Hoisting of the precast staircase 2: Lift the precast staircase 2 to the installation position, and install the two ends of the precast staircase 2 to the corresponding intermediate platform 1 or upper floor slab 100 or lower floor slab 200 respectively.

[0073] Specifically, lift the precast staircase 2, adjust the attitude of the precast staircase 2 in the air, then install the precast staircase 2 in place, and make the corresponding connecting steel parts 42 and the corresponding embedded steel parts 41 inserted, and then install bolts or pins.

[0074] The implementation principle of the embodiment of the present application is: Such an installation construction method can realize the installation of a non-supported decorative staircase and improve the stability of the installed non-supported device staircase.

[0075] Embodiment 2: A new type of non-supported decorative staircase, referring to Figure 1 and Figure 5 , the difference between this embodiment and Embodiment 1 is that: A rope pulling component 5 is provided between the precast staircase 2 and the upper floor slab 100. The rope pulling component 5 includes a plurality of ropes 51. The ropes 51 are vertically arranged between the upper floor slab 100 and the corresponding precast staircase 2. The plurality of ropes 51 are sequentially arranged at intervals along the length direction of the corresponding precast staircase 2, and the lower ends of the ropes 51 are connected to the corresponding precast staircase 2, and the upper ends are connected to the upper floor slab 100.

[0076] Under the action of a plurality of stay ropes 51, the stay ropes 51 can provide a large tensile force for the corresponding precast staircase 2, which can share the force borne by the suspender 31. At the same time, the arrangement of the plurality of stay ropes 51 can also increase the stability of the precast staircase 2 and prevent the middle part of the precast staircase 2 from jittering due to lack of support.

[0077] Referring to Figure 5 and Figure 6 , in this embodiment, a plurality of first tension rings 52 are provided on the precast staircase 2. The plurality of first tension rings 52 are arranged at intervals in sequence along the length direction of the precast staircase 2. A plurality of second tension rings 53 are provided on the upper floor slab 100. The second tension rings 53 are arranged in one-to-one correspondence with the first tension rings 52, and the second tension rings 53 are arranged directly opposite to the corresponding first tension rings 52 in the vertical direction.

[0078] Referring to Figure 5 and Figure 6 , the first tension rings 52, the second tension rings 53 and the stay ropes 51 are arranged in one-to-one correspondence. The lower end of the stay rope 51 passes through the corresponding first tension ring 52, and the upper end passes through the corresponding second tension ring 53. A plurality of rope fixing members 54 are arranged in the middle of the stay rope 51 along its length direction. Both ends of the stay rope 51 are detachably connected to the corresponding rope fixing members 54.

[0079] Referring to Figure 5 and Figure 6 , based on the arrangement of the first tension rings 52 and the second tension rings 53, the installation of the stay ropes 51 is realized. At the same time, when installing the stay ropes 51, the upper end of the stay rope 51 passes through the second tension ring 53, and the upper end of the stay rope 51 is connected to the corresponding rope fixing member 54. At this time, a fixed coil 511 is formed on the stay rope 51, and the fixed coil 511 is sleeved on the second tension ring 53, which ensures the stability of the connection between the stay rope 51 and the second tension ring 53. Similarly, the lower end of the stay rope 51 passes through the first tension ring 52. At this time, the stay rope 51 can be tightened to make the stay rope 51 taut, and then the lower end of the stay rope 51 is connected to the corresponding rope fixing member 54. At this time, a tightened coil 512 is formed at the lower end of the stay rope 51, and the tightened coil 512 is sleeved on the first tension ring 52. Through such a structure and installation method, it can be ensured that each stay rope 51 is in a taut state, which can improve the stability of the corresponding precast staircase 2.

[0080] Referring to Figure 5 and Figure 6 , in this embodiment, the first tension ring 52 is fixed to the precast staircase 2 by bolts, and the second tension ring 53 is fixed to the steel beam 101 of the upper floor slab 100 by means of bolt connection or welding.

[0081] Referring to Figure 5 and Figure 6 , in this embodiment, the rope fixing member 54 is a wire rope clip. In addition, the rope fixing member 54 can also be a wedge joint or a wire rope sleeve.

[0082] Referring to Figure 5 and Figure 6 , a handrail rope assembly 6 is further provided on the precast staircase 2. The handrail rope assembly 6 includes a handrail rope 61. The length direction of the handrail rope 61 is arranged along the length direction of the corresponding precast staircase 2. The handrail rope 61 is sequentially connected to a plurality of stay ropes 51 along its own length direction.

[0083] Since the length direction of the handrail rope 61 is arranged along the length direction of the precast staircase 2, a handrail structure can be formed on the precast staircase 2, which can increase the use safety of the unsupported decorative staircase.

[0084] Referring to Figure 5 and Figure 6 , the handrail rope assembly 6 further includes a plurality of connecting members 62. The connecting members 62 are arranged in one-to-one correspondence with the stay ropes 51. The connecting members 62 are all arranged on the corresponding stay ropes 51. The handrail rope 61 is detachably connected to a plurality of connecting members 62 in sequence along its own length direction.

[0085] The arrangement of the connecting members 62 realizes the detachable connection between the handrail rope 61 and the stay ropes 51, thereby facilitating the disassembly and assembly of the handrail rope 61, and also facilitating the assembly of the unsupported decorative staircase.

[0086] Referring to Figure 7 and Figure 8 , in this embodiment, the connecting member 62 includes a first plate 621 and a first bent rod 622. The first bent rod 622 is U-shaped. Two first holes 6211 are formed in the first plate 621. The two first holes 6211 are arranged at intervals along the length direction of the first plate 621. Two ends of the first bent rod 622 are respectively inserted into the corresponding first holes 6211, and a first clamping hole 624 is formed between the first bent rod 622 and the first plate 621. First nuts 623 are sleeved on both ends of the first bent rod 622. The first nuts 623 are screwed with the first bent rod 622. The first nuts 623 are located on the side of the first plate 621 away from the first clamping hole 624.

[0087] Referring to Figure 6 and Figure 7 , the stay rope 51 is inserted and matched with the corresponding first clamping hole 624, and both the first bent rod 622 and the first plate 621 abut against the side wall of the stay rope 51.

[0088] When the two first nuts 623 are tightened, at this time, the first bent rod 622 and the first plate 621 cooperate to clamp the stay rope 51, which can fix the connecting member 62 to the corresponding stay rope 51. After the two first nuts 623 are loosened, the position of the connecting member 62 on the corresponding stay rope 51 can be adjusted at this time.

[0089] Referring to Figure 7 and Figure 8Similarly, the connecting member 62 further includes a second plate 625 and a second bent rod 626. The second bent rod 626 is U-shaped. Two second holes 6251 are formed in the second plate 625. The two second holes 6251 are arranged at intervals along the length direction of the second plate 625. Both ends of the second bent rod 626 are respectively inserted into the corresponding second holes 6251, and a second clamping hole 628 is formed between the second bent rod 626 and the second plate 625. Second nuts 627 are sleeved on both ends of the second bent rod 626. The second nuts 627 are screwed with the second bent rod 626. The second nuts 627 are located on the side of the second plate 625 away from the second clamping hole 628.

[0090] Referring to Figure 6 and Figure 7 , the handrail rope 61 is inserted and cooperated with the corresponding second clamping hole 628, and both the second bent rod 626 and the second plate 625 abut against the side wall of the handrail rope 61.

[0091] When the two second nuts 627 are tightened, at this time, the second bent rod 626 and the second plate 625 cooperate to clamp the handrail rope 61, which can fix the connecting member 62 to the corresponding handrail rope 61. After the two second nuts 627 are loosened, the position of the connecting member 62 on the corresponding handrail rope 61 can be adjusted at this time.

[0092] Referring to Figure 6 and Figure 7 , the length direction of the first plate 621 is arranged vertically, the length direction of the second plate 625 is arranged along the length direction of the corresponding precast staircase 2, and the middle part of the first plate 621 along its own length direction is rotatably connected to the middle part of the second plate 625 along its own length direction.

[0093] Since the first plate 621 is connected to the second plate 625, the connection between the handrail rope 61 and the pulling rope 51 is realized. And the first plate 621 and the second plate 625 can rotate relative to each other, which enables the position and inclination angle of the handrail rope 61 on the pulling rope 51 to be adjustable, thereby improving the flexibility of the installation of the handrail rope 61.

[0094] Referring to Figure 7 and Figure 9 , in this embodiment, a rotating member 63 is arranged between the first plate 621 and the second plate 625. The rotating member 63 includes a first mounting plate 631, a second mounting plate 632 and a fastening bolt 633.

[0095] Referring to Figure 7 and Figure 8, the first mounting plate 631 is disposed on one side of the first plate 621 facing the second plate 625. The first mounting plate 631 is located between the first nut 623 and the first plate 621 along its own thickness direction. Two first relief holes 6311 are formed in the first mounting plate 631. The first relief holes 6311 are arranged in one-to-one correspondence with the first holes 6211, and the first relief holes 6311 are in direct communication with the first holes 6211. Both ends of the first bent rod 622 are respectively inserted into the corresponding first relief holes 6311.

[0096] By disassembling or installing the first nut 623, the disassembly and installation of the first mounting plate 631 can be achieved, which can improve the convenience of disassembling and installing the first mounting plate 631.

[0097] Refer to Figure 7 and Figure 8 , the second mounting plate 632 is disposed on one side of the second plate 625 facing the first plate 621. The second mounting plate 632 is located between the second nut 627 and the second plate 625 along its own thickness direction. Two second relief holes 6321 are formed in the second mounting plate 632. The second relief holes 6321 are arranged in one-to-one correspondence with the second holes 6251, and the second relief holes 6321 are in direct communication with the second holes 6251. Both ends of the second bent rod 626 are respectively inserted into the corresponding second relief holes 6321.

[0098] By disassembling or installing the second nut 627, the disassembly and installation of the second mounting plate 632 can be achieved, which can improve the convenience of disassembling and installing the second mounting plate 632.

[0099] Refer to Figure 8 and Figure 9 , a sleeve 6312 is disposed on one side of the first mounting plate 631 facing the second mounting plate 632. One end of the sleeve 6312 is fixedly connected to the middle of the first mounting plate 631. A plug post 6322 is disposed on one side of the second mounting plate 632 facing the first mounting plate 631. One end of the plug post 6322 is fixedly connected to the second mounting plate 632. The plug post 6322 is coaxially inserted and matched with the sleeve 6312, and the plug post 6322 is rotatably connected to the sleeve 6312.

[0100] Then, the cooperation between the sleeve 6312 and the plug post 6322 realizes the quick connection between the first mounting plate 631 and the second mounting plate 632, and establishes a rotational connection between the first mounting plate 631 and the second mounting plate 632.

[0101] Refer to Figure 8 and Figure 9, on one side of the first mounting plate 631 facing the second mounting plate 632, a screw hole 6313 is provided, and the screw hole 6313 is coaxially arranged with the sleeve 6312. On the side of the second mounting plate 632 facing away from the first mounting plate 631, a relief groove 6323 is provided. The depth direction of the relief groove 6323 is arranged along the axial direction of the insertion post 6322, and the relief groove 6323 extends into the insertion post 6322 along its own depth direction. A through hole 6324 is provided at the bottom of the relief groove 6323, and the through hole 6324 is coaxially communicated with the screw hole 6313.

[0102] Referring to Figure 8 and Figure 9 , the fastening bolt 633 is inserted into the through hole 6324, and the fastening bolt 633 is inserted and matched with the screw hole 6313. The fastening bolt 633 is threadedly connected with the inner side wall of the screw hole 6313, and the nut of the fastening bolt 633 is located in the relief groove 6323.

[0103] Referring to Figure 7 and Figure 9 , through the arrangement of the fastening bolt 633, when the fastening bolt 633 is loosened, the rotation of the first mounting plate 631 and the second mounting plate 632 can be realized at this time; further, when the fastening bolt 633 is removed, the disassembly of the first mounting plate 631 and the second mounting plate 632 can be realized at this time. On the contrary, when the fastening bolt 633 is tightened, the rotation angle between the first mounting plate 631 and the second mounting plate 632 can be fixed. Therefore, based on the structural design of the rotating member 63, the angle adjustment between the first plate 621 and the second plate 625 can be realized, and the first plate 621 and the second plate 625 can also be fixed, which enables the connecting member 62 to be adjusted to meet the connection requirements of the pulling rope 51 and the handrail rope 61.

[0104] Referring to Figure 1 and Figure 5 , in this embodiment, two sets of pulling rope assemblies 5 are provided on each precast staircase 2. The two sets of pulling rope assemblies 5 are arranged at intervals along the width direction of the corresponding precast staircase 2, and the two sets of pulling rope assemblies 5 are respectively arranged on both sides of the corresponding precast staircase 2 in the width direction. With the cooperation of the two pulling rope assemblies 5, the stability of the corresponding precast staircase 2 can be significantly improved.

[0105] Moreover, two sets of handrail rope assemblies 6 are also provided on each precast staircase 2, and the handrail rope assemblies 6 are arranged in one-to-one correspondence with the pulling rope assemblies 5. The handrail ropes 61 are sequentially connected to the corresponding pulling ropes 51 through a plurality of connecting members 62.

[0106] With the cooperation of the two handrail rope assemblies 6, handrail mechanisms can be formed on both sides of the corresponding precast staircase 2 in the width direction, which can improve the safety of using the unsupported decorative staircase.

[0107] The implementation principle of the embodiment of this application is as follows: A number of vertical ropes 51 are added between the precast staircase 2 and the upper floor slab 100. The lower end of the rope 51 is fixed to the side of the precast staircase 2 through the first tensioning ring 52, and the upper end is anchored to the steel beam 101 of the upper floor slab 100 through the second tensioning ring 53. At this time, the tension of the rope 51 and the tension of the suspension rod 31 jointly bear the load of the intermediate platform 1 and the precast staircase 2, thereby improving the structural stability of the unsupported decorative staircase.

[0108] Meanwhile, a handrail rope assembly 6 is arranged on the precast staircase 2. The handrail rope assembly 6 sequentially connects a number of ropes 51 along the length direction of the precast staircase 2 through the handrail ropes 61, which enables the handrail ropes 61 to have the functions of handrails and guardrails, thereby improving the use safety of the unsupported decorative staircase.

[0109] In addition, the tensioned handrail ropes 61 are connected in series with the ropes 51 to form a lateral restraint band, further restricting the flexural deformation of the staircase, which can also further improve the structural stability of the unsupported decorative staircase.

[0110] This embodiment also discloses an installation and construction method for a new type of unsupported decorative staircase. The difference between this embodiment and Embodiment 1 is that the following steps are further included: S5. Installation of the rope assembly 5.

[0111] S51. Install the first tensioning ring 52 on the precast staircase 2.

[0112] S52. Install the second tensioning ring 53 on the steel beam 101 of the upper floor slab 100.

[0113] S53. The upper end of the rope 51 passes through the second tensioning ring 53 and is locked through the rope fixing member 54.

[0114] S54. The lower end of the rope 51 passes through the first tensioning ring 52, and the rope 51 is tightened so that the rope 51 is in a taut state, and then the lower end of the rope 51 is locked through the rope fixing member 54.

[0115] S6. Installation of the handrail rope assembly 6.

[0116] S61. Sequentially install a number of connecting members 62 to the corresponding ropes 51 and initially adjust the positions of the connecting members 62.

[0117] S62. Install the handrail ropes 61 to the number of connecting members 62 in sequence.

[0118] S63. Adjust the positions of the number of connecting members 62 so that the handrail ropes 61 are in a straight state.

[0119] S7. Repeat the above steps S5 - S6 until the rope assemblies 5 and handrail rope assemblies 6 on all precast staircases 2 are installed.

[0120] The implementation principle of the embodiment of the present application is as follows: By the above construction method, the stay ropes 51 and handrail ropes 61 can be added to the unsupported decorative staircase, thereby improving the stability and safety of the unsupported decorative staircase.

[0121] Embodiment 3: A new type of unsupported decorative staircase. Refer to Figure 5 and Figure 10 This embodiment is different from Embodiment 2 in that: The stay rope assembly 5 further includes a first sliding rod 55 and a second sliding rod 56. The first sliding rod 55 is arranged on the corresponding precast staircase 2, and the first sliding rod 55 is located on one side of the corresponding precast staircase 2 in the width direction. The length direction of the first sliding rod 55 is arranged along the length direction of the corresponding precast staircase 2, and both ends of the first sliding rod 55 are connected to the side walls of the corresponding precast staircase 2.

[0122] Refer to Figure 10 A number of first tension rings 52 are all sleeved on the first sliding rod 55, and the first tension rings 52 are slidably connected to the corresponding first sliding rod 55 along the length direction of the corresponding first sliding rod 55.

[0123] Refer to Figure 10 The second sliding rod 56 is arranged on the steel beam 101 of the upper floor slab 100. The length direction of the second sliding rod 56 is designed along the horizontal direction, and both ends of the second sliding rod 56 are connected to the steel beam 101 of the upper floor slab 100.

[0124] Refer to Figure 10 A number of second tension rings 53 are all sleeved on the second sliding rod 56, and the second tension rings 53 are slidably connected to the corresponding second sliding rod 56 along the length direction of the corresponding second sliding rod 56.

[0125] The implementation principle of the embodiment of the present application is as follows: The first sliding rod 55 is arranged on the side of the precast staircase 2, the first tension ring 52 is sleeved on the first sliding rod 55, and the first tension ring 52 can slide along the length direction of the first sliding rod 55, which enables the position of the first tension ring 52 to be flexibly adjusted according to the segment load difference of the precast staircase 2, and specifically enhances the constraint of the high stress area on the precast staircase 2.

[0126] The second sliding rod 56 is horizontally arranged on the steel beam 101 of the upper floor slab 100, the second tension ring 53 is sleeved on the second sliding rod 56, and the second tension ring 53 can slide along the length direction of the second sliding rod 56, so that the second tension ring 53 can move following the corresponding first tension ring 52, thereby ensuring that the corresponding stay rope 51 is in a vertical state.

[0127] In addition, with such a design, the local deformation can be released through the displacement freedom of the first tension ring 52 and the second tension ring 53. Under the triple coordination of the tension of the suspension rod 31, the tension of the stay rope 51, and the slippage of the first tension ring 52 and the second tension ring 53, the global stability of the unsupported decorative staircase under static load and dynamic load conditions can be achieved.

[0128] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same parts are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A novel unsupported decorative staircase, characterized in that, Including: A number of intermediate platforms (1), the intermediate platforms (1) are vertically located between the upper floor slab (100) and the lower floor slab (200), a number of the intermediate platforms (1) are arranged at intervals in the vertical direction in sequence, and the intermediate platforms (1) are connected to the wall surface; Prefabricated stairs (2) are arranged between the upper floor slab (100) and the adjacent intermediate platform (1), between the lower floor slab (200) and the adjacent intermediate platform (1), and between two adjacent intermediate platforms (1). One end of the prefabricated stairs (2) is connected to the intermediate platform (1), and the other end is connected to the corresponding upper floor slab (100) or lower floor slab (200) or the intermediate platform (1); A number of suspension components (3) are arranged between the intermediate platform (1) and the upper floor slab (100), the lower end of the suspension component (3) is connected to the intermediate platform (1), and the upper end is connected to the upper floor slab (100).

2. The novel unsupported decorative staircase according to claim 1, characterized in that, The suspension component (3) includes a suspension rod (31), a first lifting lug (32) and a second lifting lug (33). The first lifting lug (32) is arranged on the intermediate platform (1), the second lifting lug (33) is arranged on the upper floor slab (100), the lower end of the suspension rod (31) is connected to the first lifting lug (32), and the upper end is connected to the second lifting lug (33).

3. A novel unsupported decorative staircase according to claim 1, characterized in that, The intermediate platform (1), the upper floor slab (100) and the lower floor slab (200) are all detachably connected to the corresponding prefabricated stairs (2).

4. A novel unsupported decorative staircase according to claim 3, characterized in that, Connection steel members (42) are arranged at both ends of the prefabricated stairs (2), and embedded steel members (41) are arranged on the intermediate platform (1), the upper floor slab (100) and the lower floor slab (200). The connection steel member (42) is detachably connected to the corresponding embedded steel member (41).

5. A novel unsupported decorative staircase according to claim 1, characterized in that, A rope pulling assembly (5) is arranged between the prefabricated stairs (2) and the upper floor slab (100). The rope pulling assembly (5) includes a number of ropes (51). The ropes (51) are arranged vertically. The lower end of the rope (51) is connected to the corresponding prefabricated stairs (2), and the upper end is connected to the upper floor slab (100).

6. The novel unsupported decorative staircase according to claim 5, wherein, A first tensioning ring (52) is arranged on the prefabricated stairs (2), and a second tensioning ring (53) is arranged on the upper floor slab (100). The first tensioning ring (52), the second tensioning ring (53) and the rope (51) are arranged in one-to-one correspondence. The lower end of the rope (51) passes through the corresponding first tensioning ring (52), and the upper end passes through the corresponding second tensioning ring (53); A number of rope fixing members (54) are arranged in the middle of the rope (51) along its own length direction. The rope fixing member (54) is detachably connected to the rope (51), and both ends of the rope (51) are detachably connected to the corresponding rope fixing member (54).

7. A novel unsupported decorative staircase according to claim 5, characterized in that, A handrail rope assembly (6) is further arranged on the prefabricated stairs (2). The handrail rope assembly (6) includes a handrail rope (61). The length direction of the handrail rope (61) is arranged along the length direction of the corresponding prefabricated stairs (2). The handrail rope (61) is sequentially connected to a number of the ropes (51) along its own length direction.

8. A novel unsupported decorative staircase according to claim 7, characterized in that, The handrail rope assembly (6) further includes a plurality of connecting members (62), the connecting members (62) are arranged in one-to-one correspondence with the pulling ropes (51), the connecting members (62) are arranged on the corresponding pulling ropes (51), and the handrail rope (61) is detachably connected to the plurality of connecting members (62) in sequence along its own length direction.

9. A novel unsupported decorative staircase according to claim 8, characterized in that, The connecting member (62) is slidably connected to the corresponding pulling rope (51) along the length direction of the corresponding pulling rope (51).

10. A method for installing a new type of unsupported decorative staircase, which is used for the installation of a new type of unsupported decorative staircase described in any one of the above claims 1-9, characterized in that, It includes the following steps: Positioning and setting out: Mark the installation position of the intermediate platform (1) on the wall according to the design drawing. Platform installation: Fix the intermediate platform (1) to the wall to ensure that the intermediate platforms (1) are equidistantly distributed in the vertical direction. Installation of the hanging and pulling assembly (3): Install the hanging and pulling assembly (3) between the upper floor slab (100) and the intermediate platform (1). Hoisting of the precast staircase (2): Lift the precast staircase (2) to the installation position, and install the two ends of the precast staircase (2) to the corresponding intermediate platform (1) or upper floor slab (100) or lower floor slab (200) respectively.

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