Assembled stair of pumped storage power station

Abstract

The utility model provides an assembled stair for a pumped storage power station. The assembled stair comprises a left platform unit, a right platform unit and a middle stair beam unit, the left-side horizontal supporting frameworks and the right-side horizontal supporting frameworks are arranged in a staggered manner; the middle ladder beam unit comprises a plurality of sections of ladder beam structures which are connected; one end of each section of ladder beam structure is connected with the left side horizontal supporting framework of the corresponding layer, and the other end of each section of ladder beam structure is connected with the right side horizontal supporting framework of the corresponding layer. The fabricated staircase has the following advantages that the fabricated staircase replaces a traditional cast-in-place reinforced concrete staircase, the staircase is machined and formed in a factory, and the requirement for labor force is greatly reduced. The construction speed is high, the limitation of weather conditions is small, labor is saved, and the building quality can be improved. The assembly type staircase has the advantages of being light in weight, easy to assemble and disassemble, capable of being recycled and the like, environmental pollution is reduced, and a simple and convenient construction scheme is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to an assembled staircase for a pumped storage power station. Background Art

[0002] At present, the altitudes of the opening and closing machine rooms at the inlet and outlet of the upper reservoir of the pumped-storage power station are relatively high. The temperature of the upper reservoir in severe cold and cold areas is very low, often at minus 30 to 40 degrees Celsius. The construction progress is greatly affected by the climate and the construction is difficult.

[0003] In current engineering practice, the staircase of the upper reservoir inlet and outlet opening and closing machine room adopts the traditional reinforced concrete structure. The construction procedures of reinforced concrete are many, generally including formwork, steel bar binding, concrete mortar pouring, reinforced concrete maintenance and other steps. Any problem in any step will have a certain impact on the quality of reinforced concrete. This technical solution has the following disadvantages: (1) The traditional reinforced concrete structure uses reinforced concrete slabs, which are relatively heavy and inconvenient to construct. The construction speed is slow and the construction period is long. (2) In addition to a large amount of labor, it also wastes materials such as steel pipes and formworks; resulting in high production costs and waste of materials. Utility Model Content

[0004] In view of the defects in the prior art, the utility model provides an assembled staircase for a pumped storage power station, which can effectively solve the above problems.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The utility model provides an assembled staircase for a pumped storage power station, comprising a left platform unit (20), a right platform unit (30) and a middle ladder beam unit (40);

[0007] The left platform unit (20) is assembled and installed on the left side of the concrete base (10), and the right platform unit (30) is assembled and installed on the right side of the concrete base (10); the left platform unit (20) comprises a left vertical support frame (21), a plurality of left horizontal support frames (22) installed in the left vertical support frame (21), and a left platform (23) on each layer of the left horizontal support frame (22); the right platform unit (30) comprises a right vertical support frame (31), a plurality of left horizontal support frames (22) installed in the left vertical support frame (21), and a left platform (23) on each layer of the left horizontal support frame (22). A plurality of right-side horizontal support frames (32) in the right-side vertical support frame (31) and a right-side platform (33) on each layer of the right-side horizontal support frame (32); wherein the left-side horizontal support frame (22) and the right-side horizontal support frame (32) are arranged alternately; the middle ladder beam unit (40) comprises a plurality of ladder beam structures (41) connected to each other; one end of each ladder beam structure (41) is connected to the left-side horizontal support frame (22) of the corresponding layer, and the other end is connected to the right-side horizontal support frame (32) of the corresponding layer.

[0008] Preferably, the left vertical support frame (21) and the right vertical support frame (31) have the same structure, both comprising two rows of vertically arranged steel columns (51), and each of the steel columns (51) is fixed to the concrete base (10) by bolts (52) after a steel plate (60) is welded to the bottom end.

[0009] Preferably, the left horizontal support frame (22) and the right horizontal support frame (32) have the same structure, and each layer includes a plurality of horizontally arranged steel beams (53); both ends of each of the steel beams (53) are welded to the corresponding row of steel columns (51).

[0010] Preferably, an inclined support plate (54) is provided below each welding position of the steel beam (53) and the steel column (51); and both ends of the support plate (54) are respectively welded to the steel beam (53) and the steel column (51).

[0011] Preferably, the left platform (23) and the right platform (33) have the same structure, both comprising a floor decking plate (55) and a concrete layer (56); the floor decking plate (55) is welded and installed on the surface of each steel beam (53) of each layer; and the concrete layer (56) is cast on the surface of the floor decking plate (55).

[0012] Preferably, each section of the ladder beam structure (41) comprises a ladder beam (411) and a tread plate (412) arranged on the ladder beam (411).

[0013] Preferably, both ends of the ladder beam (411) are connected to the steel beam (53) via ladder section connecting plates (413).

[0014] Preferably, the stepping board (412) comprises a horizontal footboard (412A) and a vertical side board (412B); the surface of the footboard (412A) is provided with anti-slip patterns.

[0015] Preferably, a handrail (57) is installed above each section of the ladder beam structure (41); both ends of the handrail (57) are connected to the left horizontal support frame (22) and the right horizontal support frame (32) of the corresponding layer.

[0016] The utility model provides a pumped storage power station assembled staircase with the following advantages:

[0017] 1. Prefabricated stairs replace traditional cast-in-place reinforced concrete stairs. The stairs are processed and assembled in the factory, which greatly reduces the demand for labor.

[0018] Specifically, prefabricated stairs transfer a large amount of on-site work in traditional construction methods to factories, where building components and accessories (such as steel columns, steel beams, ladder beams, etc.) are processed and manufactured, then transported to the construction site and assembled and installed on site through reliable connection methods.

[0019] 2. The construction speed is fast, less restricted by climatic conditions, saving labor and improving building quality.

[0020] 3. Prefabricated stairs have the advantages of light weight, easy installation and unloading, and recyclability, which reduces environmental pollution and provides a simple and convenient construction solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of an assembled staircase for a pumped storage power station provided by the utility model;

[0022] Figure 2 yes Figure 1 A magnified view of middle;

[0023] Figure 3 yes Figure 1 Enlarged view of middle B;

[0024] Figure 4 yes Figure 1 Detailed diagram of the node. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] The utility model provides an assembled staircase for a pumped storage power station, which has the advantages of easy production and installation, high strength, light weight, and a simple and convenient construction plan. Specifically, the assembled staircase replaces the traditional cast-in-place reinforced concrete staircase, has a fast construction speed, is less restricted by climatic conditions, is processed and assembled in the factory, greatly reduces the demand for labor, and improves the quality of the building. The assembled staircase has the advantages of light weight, effectively reducing structural loads, safety and environmental protection, fewer construction processes, and easy hoisting and construction and installation.

[0029] See also Figures 1 to 4 The utility model provides an assembled staircase for a pumped storage power station, comprising a left platform unit 20, a right platform unit 30 and a middle ladder beam unit 40;

[0030] A left platform unit 20 is assembled and installed on the left side of the concrete base 10, and a right platform unit 30 is assembled and installed on the right side of the concrete base 10; the left platform unit 20 includes a left vertical support frame 21, a plurality of left horizontal support frames 22 installed in the left vertical support frame 21, and a left platform 23 on each layer of the left horizontal support frame 22; the right platform unit 30 includes a right vertical support frame 31, a plurality of right horizontal support frames 32 installed in the right vertical support frame 31, and a right platform 33 on each layer of the right horizontal support frame 32; wherein, the left horizontal support frames 22 and the right horizontal support frames 32 are arranged alternately; the middle ladder beam unit 40 includes a plurality of ladder beam structures 41 connected to each other; one end of each ladder beam structure 41 is connected to the left horizontal support frame 22 of the corresponding layer, and the other end is connected to the right horizontal support frame 32 of the corresponding layer.

[0031] As a specific implementation structure, the left vertical support frame 21 and the right vertical support frame 31 have the same structure, both including two rows of vertically arranged steel columns 51. A steel plate 60 is welded to the bottom end of each steel column 51 and then fixed to the concrete base 10 by bolts 52.

[0032] The left horizontal support frame 22 and the right horizontal support frame 32 have the same structure, and each layer includes a plurality of horizontally arranged steel beams 53; both ends of each steel beam 53 are welded to the corresponding row of steel columns 51.

[0033] An inclined support plate 54 is provided below each welding position of the steel beam 53 and the steel column 51 ; both ends of the support plate 54 are respectively welded to the steel beam 53 and the steel column 51 . By providing the support plate 54 , the reliability of the connection between the steel beam 53 and the steel column 51 is increased.

[0034] The left platform 23 and the right platform 33 have the same structure, both including a floor deck 55 and a concrete layer 56 ; the floor deck 55 is welded and installed on the surface of each steel beam 53 of each layer; and the concrete layer 56 is cast on the surface of the floor deck 55 .

[0035] Each ladder beam structure 41 includes a ladder beam 411 and a tread plate 412 arranged on the ladder beam 411. Both ends of the ladder beam 411 are connected to the steel beam 53 through a ladder section connecting plate 413. The tread plate 412 includes a horizontal foot plate 412A and a vertical side plate 412B; the surface of the foot plate 412A is provided with anti-slip patterns.

[0036] A handrail 57 is installed above each ladder beam structure 41; both ends of the handrail 57 are connected to the left horizontal support frame 22 and the right horizontal support frame 32 of the corresponding layer. By adding the handrail 57, the safety of the staircase is increased.

[0037] The utility model provides an assembled staircase for a pumped storage power station. In actual construction, firstly, a steel column 51 is installed on a concrete base 10, a steel beam 53 is installed between two steel columns 51, and then a ladder beam 411 is installed between the steel beams 53 on the left and right sides to form an overall skeleton structure; then, a platform is arranged on the steel beam 53, a tread plate 412 is installed on the ladder beam 411, and finally a handrail 57 is arranged. Therefore, the force of the tread plate 412 is transmitted to the steel beam 53 through the ladder beam 411, and then transmitted to the steel column 51 through the steel beam 53, and finally transmitted to the concrete base 10 through the steel column 51, which has the advantages of simple structure, stability and reliability.

[0038] An embodiment is described below:

[0039] The assembled stairs of the pumped storage power station can be generally described as: comprising an installation frame, a tread plate 412, a platform and a handrail 57. The installation frame comprises a plurality of vertically arranged steel columns 51, a horizontally arranged steel beam 53 connected between the steel columns 51, and a ladder beam 411 arranged between the steel beams 53. After the steel plate 60 is welded to the bottom end of the steel column 51, it is fixed to the concrete base 10 by bolts 52, and the steel beam 53 is connected to the steel column 51 by welding; the platform and handrail 57 are installed on the upper part of the installation frame. The handrail 57 is composed of stainless steel pipes.

[0040] Among them: the steel column 51 and the steel beam 53 are both made of 300*300*10*10 square tubes. The step plate 412 is made of 5mm thick patterned plate. The platform includes a floor deck 55 and a concrete layer 56. The floor deck 55 is a 750 type 1.2mm thick galvanized steel plate. Specifically, in this embodiment, the steel column 51 is welded with the steel plate 60 and fixed on the concrete base 10 by bolts 52. The steel plate 60 is a 20*480*480 steel plate, and the bolt 52 is an M20 high-strength bolt. The steel column 51 and the steel beam 53 are welded and connected by a support plate 54, and the support plate 54 is a 12*200*340 steel plate. The welding parts are all painted with anti-rust paint. The ladder beam 411 and the steel beam 53 are connected by a ladder section connecting plate 413. The ladder beam 411 is made of 20a# channel steel, and the ladder section connecting plate 413 is made of 12*95*160 steel plate.

[0041] The utility model provides an assembled staircase for a pumped storage power station, which has the following advantages:

[0042] 1. Prefabricated stairs replace traditional cast-in-place reinforced concrete stairs. The stairs are processed and assembled in the factory, which greatly reduces the demand for labor.

[0043] Specifically, prefabricated stairs transfer a large amount of on-site work in traditional construction methods to factories, where building components and accessories (such as steel columns, steel beams, ladder beams, etc.) are processed and manufactured, then transported to the construction site and assembled and installed on site through reliable connection methods.

[0044] 2. The construction speed is fast, less restricted by climatic conditions, saving labor and improving building quality.

[0045] 3. Prefabricated stairs have the advantages of light weight, easy installation and unloading, and recyclability, which reduces environmental pollution and provides a simple and convenient construction solution.

[0046] The embodiments described above are only used to illustrate the technical ideas and features of the utility model, and their purpose is to enable technicians in the field to understand the content of the utility model and implement it accordingly. The patent scope of the utility model cannot be limited only by this embodiment, that is, any equivalent changes or modifications made to the spirit disclosed by the utility model still fall within the patent scope of the utility model.

Claims

1. An assembled staircase for a pumped storage power station, characterized in that: It comprises a left platform unit (20), a right platform unit (30) and a middle ladder beam unit (40); The left platform unit (20) is assembled and installed on the left side of the concrete base (10), and the right platform unit (30) is assembled and installed on the right side of the concrete base (10); the left platform unit (20) comprises a left vertical support frame (21), a plurality of left horizontal support frames (22) installed in the left vertical support frame (21), and a left platform (23) on each layer of the left horizontal support frame (22); the right platform unit (30) comprises a right vertical support frame (31), a plurality of left horizontal support frames (22) installed in the left vertical support frame (21), and a left platform (23) on each layer of the left horizontal support frame (22). A plurality of right-side horizontal support frames (32) in the right-side vertical support frame (31) and a right-side platform (33) on each layer of the right-side horizontal support frame (32); wherein the left-side horizontal support frame (22) and the right-side horizontal support frame (32) are arranged alternately; the middle ladder beam unit (40) comprises a plurality of ladder beam structures (41) connected to each other; one end of each ladder beam structure (41) is connected to the left-side horizontal support frame (22) of the corresponding layer, and the other end is connected to the right-side horizontal support frame (32) of the corresponding layer.

2. The assembled staircase for a pumped storage power station according to claim 1, characterized in that: The left vertical support frame (21) and the right vertical support frame (31) have the same structure, both comprising two rows of vertically arranged steel columns (51), each of the steel columns (51) having a steel plate (60) welded to the bottom end thereof and then fixed to the concrete base (10) by bolts (52).

3. The assembled staircase for a pumped storage power station according to claim 2, characterized in that: The left horizontal support frame (22) and the right horizontal support frame (32) have the same structure, and each layer includes a plurality of horizontally arranged steel beams (53); both ends of each of the steel beams (53) are welded to the corresponding row of steel columns (51).

4. The assembled staircase for a pumped storage power station according to claim 3, characterized in that: An inclined support plate (54) is arranged below the welding position of each steel beam (53) and the steel column (51); two ends of the support plate (54) are respectively welded to the steel beam (53) and the steel column (51).

5. The assembled staircase for a pumped storage power station according to claim 3, characterized in that: The left platform (23) and the right platform (33) have the same structure, both comprising a floor deck (55) and a concrete layer (56); the floor deck (55) is welded and installed on the surface of each steel beam (53) of each layer; and the concrete layer (56) is cast on the surface of the floor deck (55).

6. The assembled staircase for a pumped storage power station according to claim 3, characterized in that: Each section of the ladder beam structure (41) comprises a ladder beam (411) and a tread plate (412) arranged on the ladder beam (411).

7. The assembled staircase for a pumped storage power station according to claim 6, characterized in that: Both ends of the ladder beam (411) are connected to the steel beam (53) via ladder section connecting plates (413).

8. The assembled staircase for a pumped storage power station according to claim 6, characterized in that: The stepping board (412) comprises a footrest board (412A) in a horizontal direction and a side board (412B) in a vertical direction; the surface of the footrest board (412A) is provided with anti-slip patterns.

9. The assembled staircase for a pumped storage power station according to claim 1, characterized in that: A handrail (57) is installed above each section of the ladder beam structure (41); both ends of the handrail (57) are connected to the left horizontal support frame (22) and the right horizontal support frame (32) of the corresponding layer.

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