Platform type offshore boosting transformer substation structure

Abstract

The utility model provides a platform type offshore boost transformer substation structure which comprises a cantilever pile foundation and a platform structure arranged above the cantilever pile foundation, a platform plate is laid in the platform structure, a self-supporting template is arranged in the platform plate, module installation areas are arranged on the platform structure in a partitioned mode, and the module installation areas are connected with the cantilever pile foundation. A corresponding prefabricated cabin type boosting module is mounted in the module mounting area; a steel beam distribution layer is arranged at the bottom of the platform structure, steel beams in the steel beam distribution layer are used for being connected with a platform plate, and connecting structures connected with the bottoms of the steel beams in a supporting mode are arranged at the pile tops of the cantilever pile foundations so that adjustable interval spaces can be formed between the pile tops of the cantilever pile foundations and the steel beams. The connection between the pile top and the steel beam is realized through the connection structure on the pile top of the cantilever pile foundation, and the connection structure is formed by modular splicing, has a certain flexible adjustment space, and not only can cope with uncertain factors of offshore construction.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore photovoltaic power generation, in particular to a platform-type offshore boost substation structure. Background Art

[0002] Offshore photovoltaics is an emerging solar energy utilization direction and has developed rapidly in recent years. However, due to the special offshore environment, in addition to being corroded and damaged by the high humidity and high salt content of the ocean, the offshore photovoltaic booster substation structure is also subject to loads such as wind, snow, waves, and sea ice, so that the connection between its pile foundation and the platform is prone to deformation and damage. At the same time, due to too many uncertain factors in offshore construction, in order to accurately control the overall foundation of the offshore booster substation and the connection effect of the platform, it is necessary to ensure not only the stability of the connection but also the corresponding connection strength, which is not only difficult but also will greatly increase the amount of steel used. Utility Model Content

[0003] The utility model aims to provide an offshore boost substation structure which is convenient to construct and has high stability.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] The platform-type offshore boost substation structure comprises a cantilever pile foundation and a platform structure arranged above the cantilever pile foundation, wherein a platform plate is laid in the platform structure, and a self-supporting formwork is arranged inside the platform plate, and module installation areas are arranged in partitions on the platform structure, and corresponding prefabricated cabin-type boost modules are installed in the module installation areas; a steel beam distribution layer is arranged at the bottom of the platform structure, and the steel beams in the steel beam distribution layer are used to be connected to the platform plate, and a connecting structure connected to the bottom support of the steel beam is arranged at the top of the cantilever pile foundation, so as to form an adjustable spacing space between the top of the cantilever pile foundation and the steel beam.

[0006] Furthermore: a transverse stiffening rib is arranged in the steel beam directly above the cantilever pile foundation, and both ends of the transverse stiffening rib are connected to the flange plate of the steel beam.

[0007] Furthermore: bolts connected to the platform plate are arranged on the top flange plate of the steel beam.

[0008] Furthermore: the connection structure has a bottom steel plate laid flat on the top of the cantilever pile foundation, a top steel plate laid flat on the bottom flange plate of the steel beam, vertical ribs are arranged between the bottom steel plate and the top steel plate, and side steel plates connected to the bottom steel plate and the top steel plate are arranged on the ends of the ribs.

[0009] Furthermore: the self-supporting formwork includes a supporting steel plate, a connecting module is arranged on the top of the supporting steel plate, the cross-section of the connecting module is triangular, the connecting module includes an upper chord steel bar and a lower chord steel bar extending along the length direction of the self-supporting formwork, the upper chord steel bar and the lower chord steel bar are spaced apart in the height direction of the self-supporting formwork, and a web bar is arranged between the upper chord steel bar and the lower chord steel bar to connect the two at the same time.

[0010] Furthermore: the end of the connection module along the length direction of the self-supporting formwork is provided with a support horizontal steel bar connected to the lower chord steel bars on both sides, and the support horizontal steel bar is provided with a support vertical bar connected to the upper chord steel bar.

[0011] Furthermore: the platform structure may be provided with a grid walkway plate outside the module installation area and the area of ​​the prefabricated cabin-type booster module transportation path.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model realizes the connection between the pile top and the steel beam through the connection structure at the top of the cantilever pile foundation. The connection structure is made of modular splicing and has a certain flexible adjustment space. It can not only cope with the uncertain factors of offshore construction, but also improve the connection strength to avoid deformation and damage at the connection. And by setting up a self-supporting template welded on the shore on the steel beam to ensure the connection strength between the platform plate and the steel beam, at the same time, through the prefabricated cabin-type booster module, the prefabricated cabin-type substation booster modules are installed in blocks through the on-board foundation and the overhead cable layer, saving construction time and adapting to the characteristics of the short offshore construction window. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a plan view of the pile foundation structure of the utility model.

[0015] Figure 2 It is a plan view of the platform beam structure of the utility model.

[0016] Figure 3 This is a schematic diagram of the variable cross-section node connection of the steel beam of the utility model.

[0017] Figure 4 It is a schematic diagram of the connection between the top of the pipe pile and the steel beam of the utility model.

[0018] Figure 5 It is a cross-sectional view of the connection between the steel beam of the utility model, the cantilever pile foundation and the platform plate.

[0019] Figure 6 It is a plan view of the platform structure of the utility model.

[0020] Figure 7 It is an elevation view of the self-supporting formwork of the utility model.

[0021] Figure 8 For this utility model Figure 7 Cross-section view at AA in the middle.

[0022] Fig. 9 For this utility model Figure 7 Schematic diagram of the BB in the middle.

[0023] Fig.10 It is a schematic diagram of the fire hydrant foundation on the platform plate of the utility model.

[0024] Fig.11 It is a schematic diagram of the cylindrical frame foundation on the platform plate of the utility model.

[0025] Fig.12 It is a schematic diagram of the pre-embedded steel plate on the top of the column of the utility model.

[0026] Fig.13 This is a layout diagram of the prefabricated cabin-type booster module of the utility model. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0028] like Figure 1-13 As shown, the platform-type offshore boost substation structure includes a cantilever pile foundation 1 and a platform structure 3 arranged above the cantilever pile foundation 1, a platform plate 31 is laid in the platform structure 3, and a self-supporting formwork 6 is arranged inside the platform plate 31, and module installation areas are arranged in partitions on the platform structure 3, and corresponding prefabricated cabin-type boost modules 4 are installed in the module installation areas; a steel beam distribution layer is arranged at the bottom of the platform structure 3, and the steel beams 2 in the steel beam distribution layer are used to be connected to the platform plate 31, and a connecting structure 5 connected to the bottom support of the steel beam 2 is arranged at the top of the cantilever pile foundation 1, so that an adjustable spacing space is formed between the top of the cantilever pile foundation 1 and the steel beam 2.

[0029] like Figure 1 As shown, the cantilever pile foundation 1 of this embodiment includes a platform pile 11, a main transformer oil pool pile 12, and an emergency oil pool pile 13, and adopts different pile types according to different prefabricated cabin-type booster modules 4, so as to reasonably save the cost of the offshore booster substation structure.

[0030] like Figure 6 As shown, an overhead cable layer 33 is also provided in the platform structure 3 of this embodiment. At the same time, the platform plate 31 is provided with a reserved rainwater inlet 41, a frame foundation 42, a reserved hole 43 for electrical equipment, a fire hydrant 44, etc. according to the requirements of the prefabricated cabin-type booster module 4.

[0031] The platform plate 31 may also be provided with platform plate reinforcement bars 32 for strengthening the connection strength between the platform plate 31 and the adjacent platform plates 31 .

[0032] The platform structure 3 may be provided with a grid walkway plate 34 outside the module installation area and the area of ​​the transport path of the prefabricated cabin-type booster module 4 .

[0033] like Figure 8 As shown, the frame foundation 42 of this embodiment is connected to the platform plate 31 by internally configured frame steel bars 421, and a round steel plate 422 is arranged on the top of the frame foundation 42 for subsequent installation and connection of the upper structure.

[0034] like Fig. 9 As shown, the fire hydrant 44 of this embodiment is reliably connected to the platform plate 31 by configuring the fire hydrant foundation steel bar 441 inside. Fig.10 As shown, the fire hydrant 44 of this embodiment is provided with a column top embedded steel plate 442 at its top, and the column top embedded steel plate 442 is provided with embedded anchor bars 443 connected by perforated plug welding to facilitate the subsequent connection and installation of fire fighting equipment.

[0035] like Figure 3 As shown, a transverse stiffening rib 21 is arranged in the steel beam 2 just above the cantilever pile foundation 1, and both ends of the transverse stiffening rib 21 are connected to the flange plate of the steel beam 2. The steel beam 2 of this embodiment is a variable cross-section section above the cantilever pile foundation 1, and the transverse stiffening rib 21 is arranged at the thickened cross-section of the steel beam 2 to improve the bearing capacity and seismic performance of the steel beam 2 and reduce the use of steel and the weight of the component.

[0036] At the same time, the bottom of the flange plate of the steel beam 2 is fully welded to the top steel plate 54 of the connection structure 5, so that the top of the cantilever pile foundation 1 and the steel beam 2 can be reliably connected.

[0037] like Figure 5 As shown, the top flange plate of the steel beam 2 is provided with bolts 311 connected to the platform plate 31 .

[0038] like Figure 2 , 4 As shown, the connection structure 5 has a bottom steel plate 51 laid flat on the top of the cantilever pile foundation 1, a top steel plate 54 laid flat on the bottom flange plate of the steel beam 2, vertical ribs 53 are arranged between the bottom steel plate 51 and the top steel plate 54, and side steel plates 52 connected to the bottom steel plate 51 and the top steel plate 54 are arranged on the ends of the ribs 53.

[0039] like Figure 7As shown, the self-supporting formwork 6 includes a supporting steel plate 66, and a connecting module is arranged on the top of the supporting steel plate 66. The cross section of the connecting module is triangular. The connecting module includes an upper chord steel bar 61 and a lower chord steel bar 65 extending along the length direction of the self-supporting formwork 6. The upper chord steel bar 61 and the lower chord steel bar 65 are spaced in the height direction of the self-supporting formwork 6, and a web bar steel bar 62 is arranged between the upper chord steel bar 61 and the lower chord steel bar 65 to connect the two at the same time; the end of the connecting module along the length direction of the self-supporting formwork 6 is provided with a support horizontal steel bar 64 connecting the lower chord steel bars 65 on both sides, and a support vertical bar 63 connected to the upper chord steel bar 61 is arranged on the support horizontal steel bar 64. The steel bars in the connecting module of the self-supporting formwork 6 are connected by resistance welding. In this way, the platform plate 31 can be connected to the steel beam 2 through the self-supporting formwork 6 and the strength can be ensured; the welding work of the self-supporting formwork 6 can be completed in the factory, which saves the workload of on-site welding and also ensures the quality of welding.

[0040] See also Figure 1-13 , when installing the platform-type offshore boost substation structure, the specific contents are as follows:

[0041] The corresponding components of the whole are manufactured and formed on the shore in advance, and the outer surface of the cantilever pile foundation 1 should be protected against corrosion by using an inorganic zinc-rich primer of 75μm, an epoxy micaceous iron anti-rust paint intermediate layer of 400μm, and a polysiloxane topcoat of 100μm in the splash zone and the water level change zone. Moreover, after the various components of the connection structure 5 are processed, welded, and anti-corrosion treated on land, they are assembled and welded with the cantilever pile foundation 1 and the steel beam 2. At the same time, the supporting formwork 6 is prefabricated and installed on the steel beam 2 in the factory according to the needs, and then part of it is poured with concrete to form a platform plate 31, and part of it is installed with a grid walkway plate 43; then the prefabricated cabin-type booster module 4 is installed on the platform structure 3 in sequence through the main entrance of the platform structure 3. In this way, the unit steel consumption of the system can be reduced and the construction cost can be reduced under the premise of ensuring the safety and reliability of the platform-type offshore booster substation structure; and the components should be welded or bolted in the onshore processing plant, which reduces the difficulty of offshore construction.

[0042] The above embodiment is only a preferred technical solution of the present invention. Those skilled in the art should understand that the technical solutions or parameters in the embodiments can be modified or replaced without departing from the principle and essence of the present invention, and all should be included in the protection scope of the present invention.

Claims

1. The platform-type offshore boost substation structure is characterized by: The invention comprises a cantilever pile foundation (1) and a platform structure (3) arranged above the cantilever pile foundation (1), wherein a platform plate (31) is laid inside the platform structure (3), and a self-supporting formwork (6) is arranged inside the platform plate (31), and module installation areas are arranged in sections on the platform structure (3), and corresponding prefabricated cabin-type booster modules (4) are installed in the module installation areas; a steel beam distribution layer is arranged at the bottom of the platform structure (3), and the steel beams (2) in the steel beam distribution layer are used to be connected to the platform plate (31), and a connection structure (5) connected to the bottom support of the steel beam (2) is arranged at the top of the cantilever pile foundation (1), so that an adjustable spacing space is formed between the top of the cantilever pile foundation (1) and the steel beam (2).

2. The platform-type offshore boost substation structure according to claim 1 is characterized in that: A transverse stiffening rib (21) is arranged in the steel beam (2) directly above the cantilever pile foundation (1), and both ends of the transverse stiffening rib (21) are connected to the flange plate of the steel beam (2).

3. The platform-type offshore boost substation structure according to claim 1 is characterized in that: The top flange plate of the steel beam (2) is provided with bolts (311) connected to the platform plate (31).

4. The platform-type offshore boost substation structure according to claim 1 is characterized in that: The connection structure (5) comprises a bottom steel plate (51) laid flat on the top of the cantilever pile foundation (1), a top steel plate (54) laid flat on the bottom flange plate of the steel beam (2), a vertical rib plate (53) is arranged between the bottom steel plate (51) and the top steel plate (54), and a side steel plate (52) connected to the bottom steel plate (51) and the top steel plate (54) is arranged on the end of the rib plate (53).

5. The platform-type offshore boost substation structure according to claim 1 is characterized in that: The self-supporting formwork (6) comprises a supporting steel plate (66), a connecting module is arranged on the top of the supporting steel plate (66), the cross section of the connecting module is triangular, the connecting module comprises an upper chord steel bar (61) and a lower chord steel bar (65) extending along the length direction of the self-supporting formwork (6), the upper chord steel bar (61) and the lower chord steel bar (65) are spaced apart in the height direction of the self-supporting formwork (6), and a web bar steel bar (62) is arranged between the upper chord steel bar (61) and the lower chord steel bar (65) for connecting the two at the same time.

6. The platform-type offshore boost substation structure according to claim 5 is characterized in that: The ends of the connection module are provided with support horizontal steel bars (64) connected to the lower chord steel bars (65) on both sides, and support vertical bars (63) connected to the upper chord steel bars (61) are provided on the support horizontal steel bars (64).

7. The platform-type offshore boost substation structure according to claim 1 is characterized in that: The platform structure (3) may be provided with a grid walkway plate (34) outside the module installation area and the area of ​​the transport path of the prefabricated cabin-type booster module (4).

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