Construction method of stair structure

Abstract

The invention belongs to the technical field of building construction, and discloses a construction method of a stair structure, and the stair structure comprises a first platform, a second platform and a plurality of step beams. Firstly, a first platform, a second platform and a plurality of step beams are prefabricated, a foundation layer is constructed at the same time, a step-shaped slope is arranged on the surface of the foundation layer, then the first platform, the second platform and the step beams are installed on the step-shaped slope, constructions are constructed on the two sides of the step beams, and embedded pipe sets are arranged on the constructions according to the designed elevation of the step beams; and then the step beam and the building are connected, after the foundation layer is settled, grouting is conducted between the step beam and the step-shaped slope through the first embedded pipe, and after grouting is completed, the first embedded pipe and the second embedded pipe are blocked. According to the construction method of the stair structure, the construction efficiency can be improved, the bottom of the stair can be prevented from being separated from a backfill soil layer, and the bearing capacity and structural stability of the stair are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a construction method for a staircase structure. Background Art

[0002] In building construction, outdoor staircases are often designed. Outdoor staircases can not only meet the emergency evacuation requirements, but also reduce the indoor occupied area and lower the construction cost.

[0003] For high-rise buildings, the outdoor staircase is usually constructed after the main structure construction is completed. In the prior art, the outdoor staircase can be constructed by using the cast-in-place process, or the process of using an integral precast staircase can also be adopted. If the cast-in-place process is used to construct the outdoor staircase, formwork needs to be erected at the construction position. Although the staircase structure constructed by this construction method has good integrity, the construction difficulty is relatively large, the formwork is not easy to erect, the construction cost is relatively high, and the construction efficiency is relatively low, thus prolonging the construction period; if the integral precast staircase is used for construction, the staircase structure needs to be precast in advance, and then the staircase structure is set on the backfill soil layer, and the precast staircase structure is connected to the already constructed structures on both sides. The staircase constructed by this construction method often separates the bottom of the staircase step from the backfill soil layer due to the settlement of the soil layer under the staircase, resulting in the staircase being suspended, thereby reducing the bearing capacity and structural stability of the staircase. In severe cases, the whole staircase tilts or breaks, causing safety accidents. Summary of the Invention

[0004] The purpose of the present invention is to provide a construction method for a staircase structure, which can not only improve the construction efficiency, avoid prolonging the construction period, but also prevent the separation of the bottom of the staircase from the backfill soil layer, ensure the bearing capacity and structural stability of the staircase, and avoid safety accidents caused by the breakage of the staircase.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] Provide a construction method for a staircase structure. The staircase structure includes a first platform, a second platform and a plurality of tread beams. The construction method of the staircase structure is characterized by comprising the following steps:

[0007] S1. Prefabricate the first platform, the second platform and the plurality of tread beams, construct a base layer at the construction position according to the inclination angle and design elevation of the staircase structure, and construct a stepped slope on the upper surface of the base layer;

[0008] S2. Set the first platform and the second platform at both ends of the stepped slope along the inclination direction of the stepped slope respectively, and the second platform is higher than the first platform;

[0009] S3. Install a plurality of the tread beams on the stepped slope in sequence. Along the inclined direction of the stepped slope, the vertical heights of the plurality of tread beams gradually increase. The head and tail of any two adjacent tread beams overlap each other. The head end of the lowermost tread beam is placed on the first platform, and the tail end of the uppermost tread beam abuts against the second platform.

[0010] S4. Construct structures on both sides of the tread beam, and according to the design elevations of the plurality of tread beams, arrange a plurality of embedded pipe groups on the structures. The plurality of embedded pipe groups correspond to the plurality of tread beams one by one. The embedded pipe group includes a first embedded pipe and a second embedded pipe. The vertical heights of both the first embedded pipe and the second embedded pipe are lower than the vertical height of the corresponding tread beam, and the first embedded pipe is directly below the second embedded pipe.

[0011] S5. Connect the tread beam and the structure.

[0012] S6. The base layer settles to separate the upper surface of the stepped slope from the bottom of the tread beam. The stepped slope and the tread beam enclose a grouting chamber. The inner cavities of both the first embedded pipe and the second embedded pipe communicate with the grouting chamber.

[0013] S7. Inject mortar into the grouting chamber through the first embedded pipe until the mortar overflows from the second embedded pipe.

[0014] S8. Seal the first embedded pipe and the second embedded pipe.

[0015] Optionally, step S3 specifically includes the following steps:

[0016] S31. Install a plurality of the tread beams on the stepped slope in sequence. Along the inclined direction of the stepped slope, the vertical heights of the plurality of tread beams gradually increase. The head and tail of any two adjacent tread beams overlap each other. The head end of the lowermost tread beam is placed on the first platform, and the tail end of the uppermost tread beam abuts against the second platform.

[0017] S32. Determine whether the vertical height of the tread beam is the design elevation. If not, execute S33; if so, execute S4.

[0018] S33. Set a cushion block under the tread beam according to the difference between the vertical height of the tread beam and the design elevation to adjust the vertical height of the tread beam.

[0019] Optionally, the step beam includes a beam body and embedded steel bars. The embedded steel bars penetrate through the beam body along the extension direction of the beam body. The structure includes a structure body and a steel mesh. The steel mesh is arranged inside the structure body. The embedded steel bars are inserted into the steel mesh of the structure and connected to the steel mesh. The beam body is inserted into the structure body.

[0020] Optionally, the insertion depth of the beam body inserted into the structure body is greater than or equal to 5 cm, and the insertion depth of the embedded steel bars inserted into the steel mesh is greater than or equal to 15D (D is the diameter of the embedded steel bars).

[0021] Optionally, step S4 specifically includes the following steps:

[0022] S41. Construct the steel mesh on both sides of the step beam, insert the two ends of the embedded steel bars into the steel meshes on both sides respectively, pre-insert the two ends of the beam body into the structure bodies on both sides, and connect the embedded steel bars to the steel mesh;

[0023] S42. According to the vertical heights of multiple step beams, set multiple groups of embedded pipes on the steel mesh. The multiple groups of embedded pipes correspond to the multiple step beams one by one. Each group of embedded pipes includes a first embedded pipe and a second embedded pipe. The vertical heights of both the first embedded pipe and the second embedded pipe are lower than the vertical height of the corresponding step beam, and the first embedded pipe is directly below the second embedded pipe.

[0024] Optionally, step S5 specifically includes the following steps:

[0025] S51. Pour the concrete mortar of the structure body to connect the step beam and the structure body;

[0026] S52. Observe whether the concrete mortar enters the first embedded pipe and the second embedded pipe. If so, execute S53; if not, execute S54;

[0027] S53. Stop pouring and clean the concrete mortar in the first embedded pipe and the second embedded pipe;

[0028] S54. Continue to pour the concrete mortar to form the structure body.

[0029] Optionally, first sealing members are arranged at both ends of the first embedded pipe, and the first sealing members are used to seal the first embedded pipe;

[0030] And / or

[0031] Second sealing members are arranged at both ends of the second embedded pipe, and the second sealing members are used to seal the second embedded pipe.

[0032] Optionally, a lapping groove is provided at the tail end of the tread beam, and the front end of the upper tread beam among any two adjacent tread beams is embedded in the lapping groove of the lower tread beam.

[0033] Optionally, the lapping length between two adjacent tread beams is greater than or equal to 1 cm.

[0034] Optionally, the construction method of the staircase structure further includes the following steps:

[0035] S9. Construct a decorative surface layer on the upper surface of the staircase structure.

[0036] Advantages of the present invention:

[0037] The present invention provides a construction method of a staircase structure. The staircase structure includes a first platform, a second platform and a plurality of tread beams. When constructing the staircase, first, according to the design dimensions of the staircase structure, prefabricate the first platform, the second platform and the plurality of tread beams. At the same time, backfill the soil on the original soil layer at the construction position to form a base layer, and construct a stepped slope on the upper surface of the base layer according to the inclination angle of the staircase structure for installing the tread beams. Then, install the staircase structure, install the first platform and the second platform at both ends of the stepped slope respectively, and sequentially install a plurality of tread beams on the stepped slope. The vertical heights of the plurality of tread beams gradually increase, and the head and tail of any two adjacent tread beams overlap. The head end of the lowermost tread beam is lapped on the first platform, and the tail end of the uppermost tread beam abuts against the second platform. Then, construct other structures on both sides of the tread beam, embed a plurality of embedded pipe groups in the structures, and connect the tread beam and the structures to fix the tread beam. After the settlement of the base layer is stable, the bottom of the tread beam will be separated from the stepped slope, thereby forming a grouting chamber. At this time, concrete mortar can be injected into the grouting chamber through the first embedded pipe to connect the base layer and the tread beam of the staircase structure and reinforce the staircase structure. When the injected concrete mortar overflows from the second embedded pipe, stop grouting and block the first embedded pipe and the second embedded pipe.

[0038] By prefabricating the first platform, the second platform and the tread beams of the staircase structure, this construction method can improve the construction efficiency and avoid extending the construction period. At the same time, a plurality of embedded pipe groups are provided. After the settlement of the base layer, concrete mortar can be injected into the grouting chamber between the bottom of the tread beam of the staircase structure and the stepped slope through the first embedded pipe, so as to fill the gap between the two, thereby connecting the base layer and the tread beam, preventing the separation of the bottom of the staircase from the backfilled soil layer, ensuring the bearing capacity and structural stability of the staircase, and avoiding safety accidents caused by the fracture of the staircase. Description of the Drawings

[0039] Figure 1It is the first flowchart of the construction method of the staircase structure provided by the embodiment of the present invention;

[0040] Figure 2 It is the first view of the staircase structure provided by the embodiment of the present invention;

[0041] Figure 3 It is the second view of the staircase structure provided by the embodiment of the present invention;

[0042] Figure 4 It is the second flowchart of the construction method of the staircase structure provided by the embodiment of the present invention.

[0043] In the figure:

[0044] 1. Staircase structure; 11. First platform; 12. Second platform; 13. Tread beam; 131. Beam body; 132. Embedded steel bars;

[0045] 2. Foundation layer; 21. Step-shaped slope;

[0046] 3. Embedded pipe group; 31. First embedded pipe; 32. Second embedded pipe;

[0047] 4. Structure;

[0048] 5. Decorative surface layer. Detailed implementation manners

[0049] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only parts related to the present invention are shown in the drawings, rather than all structures.

[0050] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0052] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left" and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0053] This embodiment provides a construction method for a staircase structure. The staircase structure 1 includes a first platform 11, a second platform 12 and a plurality of tread beams 13. As Figures 1 to 4 shown, it can not only improve the construction efficiency and avoid prolonging the construction period, but also prevent the separation of the bottom of the staircase from the backfill soil layer, ensure the bearing capacity and structural stability of the staircase, and avoid safety accidents caused by the fracture of the staircase.

[0054] The construction method of the staircase structure includes the following steps:

[0055] S1. Referring to Figures 1 to 3 shown, prefabricate the first platform 11, the second platform 12 and a plurality of tread beams 13, construct the base layer 2 at the position to be constructed according to the inclination angle and design elevation of the staircase structure 1, and construct a stepped slope 21 on the upper surface of the base layer 2;

[0056] S2. Referring to Figures 1 to 3 shown, arrange the first platform 11 and the second platform 12 at both ends of the stepped slope 21 along the inclination direction of the stepped slope 21, and the second platform 12 is higher than the first platform 11;

[0057] S3. Referring to Figures 1 to 3 shown, sequentially install a plurality of tread beams 13 on the stepped slope 21. Along the inclination direction of the stepped slope 21, the vertical heights of the plurality of tread beams 13 gradually increase, and the head and tail of any two adjacent tread beams 13 are lapped. The head of the lowermost tread beam 13 is lapped on the first platform 11, and the tail of the uppermost tread beam 13 abuts against the second platform 12;

[0058] S4, Refer to Figures 1 to 3 As shown, construct structures 4 on both sides of the step beam 13. According to the design elevations of multiple step beams 13, set multiple embedded pipe groups 3 on the structures 4. The multiple embedded pipe groups 3 correspond to the multiple step beams 13 one by one. The embedded pipe group 3 includes a first embedded pipe 31 and a second embedded pipe 32. The vertical heights of both the first embedded pipe 31 and the second embedded pipe 32 are lower than the vertical height of the corresponding step beam 13, and the first embedded pipe 31 is directly below the second embedded pipe 32;

[0059] S5, Refer to Figures 1 to 3 As shown, connect the step beam 13 and the structure 4;

[0060] S6, Refer to Figures 1 to 3 As shown, the base layer 2 settles to separate the upper surface of the stepped slope 21 from the bottom of the step beam 13. The stepped slope 21 and the step beam 13 enclose a grouting chamber. The inner cavities of both the first embedded pipe 31 and the second embedded pipe 32 communicate with the grouting chamber;

[0061] S7, Refer to Figures 1 to 3 As shown, inject mortar into the grouting chamber through the first embedded pipe 31 until the mortar overflows from the second embedded pipe 32;

[0062] S8, Refer to Figures 1 to 3 As shown, seal the first embedded pipe 31 and the second embedded pipe 32.

[0063] When constructing a staircase, first, according to the design dimensions of the staircase structure 1, precast the first platform 11, the second platform 12, and multiple tread beams 13. At the same time, backfill the original soil layer at the construction location to form the foundation layer 2. Then, construct a stepped slope 21 on the upper surface of the foundation layer 2 according to the inclination angle of the staircase structure 1 to facilitate the installation of the tread beams 13. After that, install the staircase structure 1. Install the first platform 11 and the second platform 12 at both ends of the stepped slope 21 respectively, and sequentially install multiple tread beams 13 on the stepped slope 21. The vertical heights of the multiple tread beams 13 gradually increase. The head and tail of any two adjacent tread beams 13 overlap. The head of the lowermost tread beam 13 is placed on the first platform 11, and the tail of the uppermost tread beam 13 abuts against the second platform 12. Then, construct other structures 4 on both sides of the tread beams 13, embed multiple embedded pipe groups 3 in the structures 4, and connect the tread beams 13 and the structures 4 to fix the tread beams 13. After the foundation layer 2 has settled stably, the bottom of the tread beam 13 will separate from the stepped slope 21, thus forming a grouting chamber. At this time, grout mortar can be injected into the grouting chamber through the first embedded pipe 31 to connect the foundation layer 2 and the tread beam 13 of the staircase structure 1 and reinforce the staircase structure 1. When the injected grout mortar overflows from the second embedded pipe 32, stop grouting and block the first embedded pipe 31 and the second embedded pipe 32.

[0064] This construction method can improve the construction efficiency and avoid extending the construction period by precasting the first platform 11, the second platform 12, and the tread beams 13 of the staircase structure 1. At the same time, multiple embedded pipe groups 3 are provided. After the foundation layer 2 has settled, grout mortar can be injected into the grouting chamber between the bottom of the tread beam 13 of the staircase structure 1 and the stepped slope 21 through the first embedded pipe 31 to fill the gap between the two, thereby connecting the foundation layer 2 and the tread beam 13, preventing the bottom of the staircase from separating from the backfill soil layer, ensuring the bearing capacity and structural stability of the staircase, and avoiding safety accidents caused by staircase fractures.

[0065] In this embodiment, the overlapping length of any two adjacent tread beams 13 is greater than or equal to 1 cm.

[0066] Optionally, as Figures 2 to 4 shown, step S3 specifically includes the following steps:

[0067] S31. Sequentially install multiple tread beams 13 on the stepped slope 21. Along the inclination direction of the stepped slope 21, the vertical heights of the multiple tread beams 13 gradually increase. The head and tail of any two adjacent tread beams 13 overlap. The head of the lowermost tread beam 13 is placed on the first platform 11, and the tail of the uppermost tread beam 13 abuts against the second platform 12.

[0068] S32. Determine whether the vertical height of the step beam 13 is the design elevation. If not, execute S33; if so, execute S4.

[0069] S33. Set a cushion block under the step beam 13 according to the difference between the vertical height of the step beam 13 and the design elevation, for adjusting the vertical height of the step beam 13.

[0070] When installing the step beam 13, by setting a cushion block under the step beam 13, the vertical height of the step beam 13 can be adjusted, so that the vertical height of the step beam 13 conforms to the design elevation, avoiding affecting the overall stability of the structure.

[0071] Optionally, as Figure 2 and Figure 3 shown, the step beam 13 includes a beam body 131 and embedded steel bars 132. The embedded steel bars 132 penetrate through the beam body 131 along the extension direction of the beam body 131. The structure 4 includes a structure body and a steel bar mesh, and the steel bar mesh is arranged inside the structure body. The embedded steel bars 132 are inserted into the steel bar mesh of the structure 4 and connected to the steel bar mesh, and the beam body 131 is inserted into the structure body. Other structures 4 are arranged on both sides of the step beam 13. When constructing the stairs, the steel bar mesh can be constructed at the construction position of the structure 4. According to the designed thickness of the structure body, the beam body 131 of the step beam 13 is installed on the stepped slope 21, and it is ensured that both ends of the beam body 131 can be inserted into the structure body. The embedded steel bars 132 are connected to the steel bar mesh, thereby fixing the step beam 13. Then, concrete mortar is poured to form the structure body, thereby connecting the step beam 13 and the structure 4.

[0072] It should be noted that if the structures 4 on both sides of the step beam 13 need to be constructed in advance, insertion holes are preset on the structures 4, and multiple groups of embedded pipes 3 are embedded according to the design elevations of the respective step beams 13. When installing the step beam 13, the step beam 13 is inserted into the insertion holes, and the holes are sealed with concrete.

[0073] In this embodiment, the insertion depth of the beam body 131 inserted into the structure body is greater than or equal to 5 cm, and the insertion depth of the embedded steel bars 132 inserted into the steel bar mesh is greater than or equal to 15D (D is the diameter of the embedded steel bars 132).

[0074] Optionally, as Figures 2 to 4 shown, step S4 specifically includes the following steps:

[0075] S41. Construct the steel bar mesh on both sides of the step beam 13, insert the two ends of the embedded steel bars 132 into the steel bar meshes on both sides respectively, pre-insert the two ends of the beam body 131 into the structure bodies on both sides, and connect the embedded steel bars 132 to the steel bar mesh.

[0076] S42. Set a plurality of pre-embedded pipe groups 3 on the steel bar mesh according to the vertical heights of the plurality of tread beams 13. The plurality of pre-embedded pipe groups 3 correspond to the plurality of tread beams 13 one by one. The pre-embedded pipe group 3 includes a first pre-embedded pipe 31 and a second pre-embedded pipe 32. The vertical heights of both the first pre-embedded pipe 31 and the second pre-embedded pipe 32 are lower than the vertical height of the corresponding tread beam 13, and the first pre-embedded pipe 31 is directly below the second pre-embedded pipe 32.

[0077] Optionally, step S5 specifically includes the following steps:

[0078] S51. Pour the concrete mortar of the building body to connect the tread beam 13 with the building body;

[0079] S52. Observe whether the concrete mortar enters the first pre-embedded pipe 31 and the second pre-embedded pipe 32. If so, execute S53; if not, execute S54;

[0080] S53. Stop pouring and clean the concrete mortar in the first pre-embedded pipe 31 and the second pre-embedded pipe 32;

[0081] S54. Continue to pour the concrete mortar to form the building body.

[0082] By constructing the steel bar mesh on both sides of the tread beam 13, connecting the pre-embedded steel bars 132 of the tread beam 13 with the steel bar mesh, and then pouring the concrete mortar to form the building body, the prefabricated staircase structure 1 can be reliably connected to the two side structures 4, thus ensuring the overall stability of the staircase structure 1.

[0083] Optionally, first sealing members are provided at both ends of the first pre-embedded pipe 31, and second sealing members are provided at both ends of the second pre-embedded pipe 32. The first sealing member is used to block the first pre-embedded pipe 31, and the second sealing member is used to block the second pre-embedded pipe 32. By providing the first sealing member and the second sealing member, when constructing the building body, it is possible to prevent the poured concrete mortar from entering the first pre-embedded pipe 31 and the second pre-embedded pipe 32 and prevent the first pre-embedded pipe 31 and the second pre-embedded pipe 32 from being blocked.

[0084] Optionally, a lapping groove is provided at the tail end of the tread beam 13. By providing the lapping groove, the front end of the upper tread beam 13 among any two adjacent tread beams 13 can be embedded in the lapping groove of the lower tread beam 13, thereby improving the connection strength between the two tread beams 13 and the stability of the staircase structure 1.

[0085] In this embodiment, the construction method of the staircase structure further includes the following steps:

[0086] S9. Construct a decorative surface layer 5 on the upper surface of the staircase structure 1.

[0087] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A construction method of a staircase structure, the staircase structure (1) comprising a first platform (11), a second platform (12) and a plurality of tread beams (13), characterized in that, The construction method of the staircase structure includes the following steps: S1. Prefabricate the first platform (11), the second platform (12) and a plurality of the tread beams (13). Construct the base layer (2) at the construction position according to the inclination angle and design elevation of the staircase structure (1), and construct a stepped slope (21) on the upper surface of the base layer (2); S2. Arrange the first platform (11) and the second platform (12) at both ends of the stepped slope (21) along the inclination direction of the stepped slope (21), and the second platform (12) is higher than the first platform (11); S3. Install a plurality of the tread beams (13) in sequence on the stepped slope (21). The vertical heights of the plurality of the tread beams (13) gradually increase along the inclination direction of the stepped slope (21). The head and tail of any two adjacent tread beams (13) are overlapped. The head end of the lowermost tread beam (13) is placed on the first platform (11), and the tail end of the uppermost tread beam (13) abuts against the second platform (12); S4. Construct the structure (4) on both sides of the tread beam (13), and set a plurality of embedded pipe groups (3) on the structure (4) according to the design elevations of the plurality of the tread beams (13). The plurality of the embedded pipe groups (3) correspond to the plurality of the tread beams (13) one by one. The embedded pipe group (3) includes a first embedded pipe (31) and a second embedded pipe (32). The vertical heights of the first embedded pipe (31) and the second embedded pipe (32) are both lower than the vertical height of the corresponding tread beam (13), and the first embedded pipe (31) is located directly below the second embedded pipe (32); S5. Connect the tread beam (13) and the structure (4); S6. The base layer (2) settles to separate the upper surface of the stepped slope (21) from the bottom of the tread beam (13). The stepped slope (21) and the tread beam (13) enclose a grouting chamber. The inner cavities of the first embedded pipe (31) and the second embedded pipe (32) are both communicated with the grouting chamber; S7. Inject the concrete mortar into the grouting chamber through the first embedded pipe (31) until the concrete mortar overflows from the second embedded pipe (32); S8. Plug the first embedded pipe (31) and the second embedded pipe (32).

2. The construction method of the staircase structure according to claim 1, characterized in that, The step S3 specifically includes the following steps: S31. Install a plurality of the tread beams (13) in sequence on the stepped slope (21). The vertical heights of the plurality of the tread beams (13) gradually increase along the inclination direction of the stepped slope (21). The head and tail of any two adjacent tread beams (13) are overlapped. The head end of the lowermost tread beam (13) is placed on the first platform (11), and the tail end of the uppermost tread beam (13) abuts against the second platform (12); S32. Determine whether the vertical height of the step beam (13) is the designed elevation. If not, execute S33; if so, execute S4. S33. Set a cushion block under the step beam (13) according to the difference between the vertical height of the step beam (13) and the designed elevation, for adjusting the vertical height of the step beam (13).

3. The construction method of the staircase structure according to claim 1, characterized in that, The step beam (13) includes a beam body (131) and embedded steel bars (132). The embedded steel bars (132) penetrate through the beam body (131) along the extending direction of the beam body (131). The structure (4) includes a structure body and a steel bar mesh. The steel bar mesh is arranged inside the structure body. The embedded steel bars (132) are inserted into the steel bar mesh of the structure (4) and connected to the steel bar mesh. The beam body (131) is inserted into the structure body.

4. The construction method of the staircase structure according to claim 3, characterized in that, The insertion depth of the beam body (131) inserted into the structure body is greater than or equal to 5 cm, and the insertion depth of the embedded steel bars (132) inserted into the steel bar mesh is greater than or equal to 15D (D is the diameter of the embedded steel bars (132)).

5. The construction method of the staircase structure according to claim 4, characterized in that, The specific steps of step S4 include the following steps: S41. Construct the steel bar mesh on both sides of the step beam (13), insert the two ends of the embedded steel bars (132) into the steel bar meshes on both sides respectively, pre-insert the two ends of the beam body (131) into the structure bodies on both sides, and connect the embedded steel bars (132) to the steel bar mesh. S42. Set a plurality of the embedded pipe groups (3) on the steel bar mesh according to the vertical heights of the plurality of step beams (13). The plurality of embedded pipe groups (3) correspond to the plurality of step beams (13) one by one. The embedded pipe group (3) includes a first embedded pipe (31) and a second embedded pipe (32). The vertical heights of both the first embedded pipe (31) and the second embedded pipe (32) are lower than the vertical height of the corresponding step beam (13), and the first embedded pipe (31) is directly below the second embedded pipe (32).

6. The construction method of the staircase structure according to claim 5, characterized in that, The specific steps of step S5 include the following steps: S51. Pour the concrete mortar of the structure body to connect the step beam (13) and the structure body. S52. Observe whether the concrete mortar enters the first embedded pipe (31) and the second embedded pipe (32). If so, execute S53; if not, execute S54. S53. Stop pouring and clean the concrete mortar in the first embedded pipe (31) and the second embedded pipe (32). S54. Continue to pour the concrete mortar to form the structure body.

7. The construction method of the staircase structure according to claim 5, characterized in that, Both ends of the first embedded pipe (31) are provided with first sealing members for sealing the first embedded pipe (31). and / or Both ends of the second embedded pipe (32) are provided with second sealing members for sealing the second embedded pipe (32).

8. The construction method of the staircase structure according to any one of claims 1-6, characterized in that, A la cola del viga de escalón (13) se establece una ranura de solape, y la punta delantera de la viga de escalón (13) ubicada arriba en dos vigas de escalón (13) adyacentes cualesquiera se inserta en la ranura de solape de la viga de escalón (13) ubicada abajo.

9. The construction method of the staircase structure according to any one of claims 1-6, characterized in that, La longitud de solape de dos vigas de escalón (13) adyacentes es mayor o igual a 1 cm.

10. The construction method of the staircase structure according to any one of claims 1-6, characterized in that, El método de construcción de la estructura de escalera también incluye los siguientes pasos: S9. Construir una capa de decoración (5) en la superficie superior de la estructura de escalera (1).

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