Large-span offshore photovoltaic truss type support structure

Abstract

The invention provides a large-span offshore photovoltaic truss type support structure, which is characterized in that a truss is arranged at the pile top of a support pile in a photovoltaic power generation area, the whole truss comprises a plurality of independent parts which are spliced along the arrangement direction of the support pile, a support is arranged at the top of the truss, and a photovoltaic module is mounted on the support; therefore, the bracket and the photovoltaic module form a steady-state supporting state on the truss; pile foundation connecting structures which are adjusted in the vertical direction and the horizontal direction respectively are arranged between the support piles and the trusses, and middle connecting pieces for bearing the support piles and the trusses are arranged on the pile foundation connecting structures in the vertical direction. By means of the connecting structure between the pile foundation and the truss which are adjustable in the vertical direction and the horizontal direction, the requirement for the vertical precision of piling is low, the construction requirement for offshore pile foundation construction can be lowered so that a support can be conveniently installed, it can be guaranteed that after the pile foundation deviates in the horizontal direction, the truss can still be normally installed on the pile top, and therefore the construction difficulty is lowered, and the construction efficiency is improved. And normal project propulsion is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore photovoltaic power generation, and in particular to a large-span offshore photovoltaic truss support structure. Background Art

[0002] Compared with onshore photovoltaic structures, offshore photovoltaic structures are not only affected by wind loads during construction and operation, but also need to consider the effects of wave and current loads. Compared with onshore photovoltaic support foundations, the dominant load of offshore photovoltaics is transformed into wave and current loads.

[0003] The traditional photovoltaic support structure uses a fixed photovoltaic support structure with photovoltaic modules on the upper part and photovoltaic support piles on the lower part. This connection structure is simple and economical when used for onshore photovoltaics. However, there are the following problems when used at sea: (1) The pile foundation is used in large quantities, which is easy to damage the ecological environment of the ocean and tidal flats, thus having a greater impact on the environment; (2) Compared with onshore photovoltaic structures, the control load of marine photovoltaic structures is changed from wind load control to wave and current load control, which puts forward higher requirements for the cracking moment and design moment of the pile foundation, thereby causing a surge in the cost of a single pile. Traditional support types cannot meet the economic requirements of marine projects; (3) The waves and currents in the marine environment are large, which is easy to cause pile foundation deviation problems. At the same time, the soil in the tidal flats and offshore areas is relatively soft, and the pile foundation construction process is prone to large vertical displacement deviations, resulting in subsequent inability to install normally. Therefore, under the above problems, the stability and adaptability of the offshore photovoltaic support structure are tested. Summary of the invention

[0004] The purpose of the present invention is to provide a truss support structure suitable for large-span offshore photovoltaics and capable of reducing the installation accuracy requirements. To this end, the present invention adopts the following technical solutions:

[0005] A large-span offshore photovoltaic truss support structure, in which a truss is arranged on the top of a support pile in a photovoltaic power generation area, and the overall truss includes a plurality of independent parts spliced ​​and arranged along the arrangement direction of the support piles, a support is arranged on the top of the truss, and a photovoltaic component is installed on the support, so that the support and the photovoltaic component form a stable supporting state on the truss; a pile foundation connection structure that can be adjusted vertically and horizontally respectively is arranged between the support pile and the truss, and an intermediate connecting piece for receiving the support pile and the truss is arranged in the vertical direction of the pile foundation connection structure, and a locking part that cooperates with a first locking part for limit adjustment is arranged on the intermediate connecting piece, and a vertical adjustment interval is arranged between the support pile and the truss, so that the truss is in a horizontal state on the support piles on both sides, and a connecting plate is arranged on the top of the intermediate connecting piece, and the connecting plate and the truss are connected by a second locking piece, and a horizontal adjustment part that cooperates with the second locking piece is opened on the connecting plate.

[0006] Furthermore: the independent part of the truss includes a chord and a web, the web is connected between the upper chord and the lower chord of the chord, the upper chord is used to connect with the bracket, and the lower chord is used to connect with the pile foundation connection structure.

[0007] Furthermore: a chord connecting portion is provided between the chords of adjacent independent parts, and a web connecting portion is provided between the webs of adjacent independent parts.

[0008] Furthermore: the chord connecting part and the web connecting part are both provided with angle plates, the angle plates cover the outer surface of the chord or web that matches therewith, the angle plates are provided with through-fixing parts connected to the chord or web, and bolt connections are provided on the angle parts of the angle plates.

[0009] Furthermore: the intermediate connecting piece is arranged on the outside of the support pile, a hoop plate is arranged on the outer surface of the support pile, and the first locking piece is arranged on the ear plate of the hoop plate and connected to the intermediate connecting piece.

[0010] Furthermore: the lower chord is provided with a reserved groove in the vertical direction, the reserved groove is interconnected with the horizontal adjustment part and cooperates with the second locking member, the lower chord is provided with a U-shaped cover plate on its upper part, and the U-shaped cover plate is provided with a through hole that cooperates with the second locking member.

[0011] Furthermore, there is an adjustment space between the two side ends of the horizontal adjustment portion, and the middle section of the horizontal adjustment portion is arc-shaped.

[0012] Furthermore: the bracket includes an inclined beam, a column is connected below the inclined beam, the column is connected to the upper chord, an inclined brace is connected between the column and the inclined beam, the photovoltaic component is arranged on the inclined beam, and a purlin is arranged between the photovoltaic component and the inclined beam.

[0013] Furthermore: a bracket connection structure is connected between the bracket and the upper chord rod, and the bracket connection structure includes a vertical pole connected to the bracket, a bottom plate is arranged at the bottom of the vertical pole, and the bottom plate and the upper chord rod are connected by U-shaped bolts.

[0014] Furthermore: the locking portion includes a plurality of reserved holes which are arranged at intervals on the intermediate connecting member.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention changes the conventional method of directly connecting the support piles with the support through the truss, and multiple supports can be installed between adjacent support piles, thereby achieving the purpose of reducing the use of pile foundations and saving project costs; and the multi-span trusses can be connected to each other through the truss in the form of a spliced ​​structure, so that the truss pile foundation can be shared to reduce the use of pile foundations. The present invention has a connection structure between the pile foundation and the truss that can be adjusted vertically and horizontally, which not only has low requirements for the vertical accuracy of piling, but also reduces the construction requirements for offshore pile foundation construction to facilitate support installation, and can also ensure that after the pile foundation is horizontally offset, the truss can still be normally installed on the pile top, thereby reducing the construction difficulty and ensuring the normal progress of the project; at the same time, it can also achieve the purpose of preventing pile foundation from settling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an elevation view of the overall structure of the present invention;

[0018] Figure 2 It is an elevation view of a local structure of the present invention;

[0019] Figure 3 A plan view of the overall structure of the present invention;

[0020] Figure 4 is a schematic diagram of a truss structure of the present invention;

[0021] Figure 5 It is a cross-sectional view of the AA at the connection node between the chord rods of the present invention;

[0022] Figure 6 It is a cross-sectional view of the connection node BB between the web members of the present invention;

[0023] Figure 7 This is a schematic diagram of the connection node of the diagonal brace of the support of the present invention;

[0024] Figure 8 It is a schematic diagram of the connection node between the inclined beam and the vertical pole of the present invention;

[0025] Fig. 9 It is a schematic diagram of the connection node between the oblique beam and the oblique brace of the present invention;

[0026] Fig.10 It is a schematic diagram of the connection node between the support pile and the truss of the present invention;

[0027] Fig.11 It is a plan view of the connection node between the support pile and the truss of the present invention;

[0028] Fig.12 It is a plan view of the connection node between the pile foundation and the truss of the present invention;

[0029] Fig.13 It is an elevation view of the connection structure between the pile foundation and the truss of the present invention;

[0030] Fig.14 It is a schematic diagram of the connection node between the truss and the support beam of the present invention;

[0031] Fig.15 It is a schematic diagram of the connection node between the truss and the bracket of the present invention;

[0032] Fig.16 It is a schematic diagram of the connection node between the bracket and the purlin of the present invention;

[0033] Fig.17 This is a front view of the connection node between the purlin and the photovoltaic module of the present invention;

[0034] Fig.18 It is a side view of the connection node between the purlin and the photovoltaic module of the present invention.

[0035] The marks in the attached drawings are: 1-truss, 11-chord, 111-upper chord, 112-lower chord, 113-reserved groove, 12-web, 121-vertical web, 122-diagonal web, 13-chord connection, 131-angle steel plate, 132-first pair of through bolts, 133-first connecting bolts, 14-web connection, 141-angle steel plate, 142-second pair of through bolts, 143-second connecting bolts, 2-bracket, 21-column, 22-diagonal brace, 23-diagonal beam, 3-purlin, 4-photovoltaic module, 5-bracket pile, 61-pile foundation connection structure, 611-hoop plate, 612-first lock Stopper, 613 - intermediate connecting piece, 614 - connecting plate, 615 - U-shaped cover plate, 616 - second locking piece, 617 - locking part, 618 - horizontal adjustment part, 619 - through hole, 62 - support beam connection structure, 621 - first U-shaped bolt, 622 - first square steel vertical pole, 623 - first connecting steel plate, 63 - support rod connection structure, 631 - second U-shaped bolt, 632 - second square steel vertical pole, 633 - second connecting steel plate, 64 - purlin connection structure, 641 - angle steel plate, 65 - component connection structure, 651 - third U-shaped bolt, 652 - T-shaped pressure plate, 653 - third connecting steel plate. DETAILED DESCRIPTION

[0036] 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.

[0037] The present embodiment provides an offshore photovoltaic power plant, the water depth of the photovoltaic field is 3-5m, the wave height of 50 years is 3.5m, the offshore photovoltaic adopts a truss support structure with a span of 24m along the truss 1 and a span of 6.5m along the purlin 3, and the support piles 5 adopt PHC-600-130C pipe piles. The number of piles used in the truss support structure is 20% of the number of piles used in the traditional 9-pile photovoltaic support.

[0038] like Figure 1-18As shown, a large-span offshore photovoltaic truss support structure is provided, in which a truss 1 is arranged on the top of the support pile 5 in the photovoltaic power generation area, and the overall truss 1 will be shared and supported by the support pile 5 in the photovoltaic power generation area to reduce the use of the support pile 5. The overall truss 1 includes a plurality of independent parts spliced ​​and arranged along the arrangement direction of the support pile 5, and a support 2 is arranged on the top of the truss 1. Three supports 2 can be installed on the upper part of the truss 1 between each section of the support pile 5, and a photovoltaic module 4 is installed on the support 2, and four purlins 3 are installed between the supports 2 on both sides, which are connected by a purlin connection structure 64, so that the support 2 and the photovoltaic module 4 form a stable support state on the truss 1, and the photovoltaic module 4 is installed on the purlin 3 and connected by an assembly connection structure 65, and the north-south support piles 5 are connected through the truss 1, so as to improve the integrity and structural stability of the support 2; a pile foundation connection structure which can be adjusted vertically and horizontally respectively is arranged between the support pile 5 and the truss 1 Structure 61, the pile foundation connection structure 61 is provided with an intermediate connection piece 613 for receiving the support pile 5 and the truss 1 in the vertical direction, and a locking portion 617 cooperating with the first locking piece 612 for limiting adjustment is provided on the intermediate connection piece 613, and a vertical adjustment interval is provided between the support pile 5 and the truss 1, thereby lowering the vertical precision requirement of piling, thereby reducing the construction requirements of the offshore support pile 5 construction, and facilitating the installation of the support 2. If the support pile 5 sinks, the height of the support 2 can be raised by adjusting the position of the second locking piece 616 connected to the intermediate connection piece 613, thereby achieving the purpose of pile foundation anti-settlement; a connecting plate 614 is provided on the top of the intermediate connection piece 613, and the connecting plate 614 is connected to the truss 1 through the second locking piece 616, and a horizontal adjustment portion 618 cooperating with the second locking piece 616 is provided on the connecting plate 614, so that even if the support pile 5 is horizontally deviated, the truss 1 can still be normally installed on the top of the support pile 5.

[0039] The first locking member 612 and the second locking member 616 can both be connected and fixed by bolts.

[0040] like Figure 1-6 As shown in Figures 10-11, specifically, the independent part of the truss 1 includes a chord 11 and a web 12. The web 12 is connected between the upper chord 111 and the lower chord 112 of the chord 11. The upper chord 111 is used to connect with the bracket 2, and the lower chord 112 is used to connect with the pile foundation connection structure 61. The web 12 includes a vertical web 121 and an oblique web 122. Among them, a chord connection part 13 is connected between the chords 11 of adjacent independent parts, and a web connection part 14 is connected between the oblique webs 122 of adjacent independent parts. The chord connection part 13 and the web connection part 14 are both provided with angled plates, which cover the outer surface of the chord 11 or the web 12 matched therewith, and a through-fixing piece connected to the chord 11 or the web 12 is provided on the angled plate, and a bolt connection is provided on the angled part of the angled plate.

[0041] In this embodiment, the chord connecting part 13 includes a first angled steel plate 131, a first through bolt 132 and a first connecting bolt 133 arranged in pairs. The first angled steel plate 131 is adapted to the size of the chord 11. The first through bolt 132 passes through the first angled steel plates 131 on both sides and the chord 11 to connect the first angled steel plate 131 with the chord 11, and thereby connects the chord connecting part 13 with the two sections of the chord 11. Two first connecting bolts 133 are installed between the first angled steel plates 131 to fix. The connection method of the web connecting part 14 is basically the same as that of the chord connecting part 13. The web connecting part 14 includes a second angled steel plate 141, a second through bolt 142 and a second connecting bolt 143 arranged in pairs to connect and fix the two sections of the diagonal web 122 to each other.

[0042] like Figure 9-12 As shown, specifically, the intermediate connecting member 613 is arranged on the outside of the support pile 5, and a clamping plate 611 is arranged on the outer surface of the support pile 5. The intermediate connecting member 613 is arranged between the ear plates of the clamping plates 611 on both sides. At the same time, the first locking member 612 is connected to the ear plate of the clamping plate 611 and is connected to the intermediate connecting member 613 through the ear plate.

[0043] Specifically, the lower chord rod 112 is provided with a reserved groove 113 in the vertical direction. The reserved groove 113 preferably has a certain margin for the second locking member 616 to move when it is opened, and the opening direction of the reserved groove 113 is perpendicular to the opening direction of the horizontal adjustment portion 618. The reserved groove 113 and the horizontal adjustment portion 618 are interconnected and cooperate with the second locking member 616. The lower chord rod 112 is provided with a U-shaped cover plate 615 on its upper part, and the U-shaped cover plate 615 is provided with a through hole 619 that cooperates with the rod body of the second locking member 616.

[0044] like Figure 10-13 As shown, specifically, the locking portion 617 includes a plurality of reserved holes provided on the intermediate connecting member 613, and the reserved holes are arranged at intervals in the vertical direction, so that the height of the truss 1 can be adjusted, thereby controlling the truss 1 on the support pile 5 to remain horizontal by selecting different reserved holes on the intermediate connecting member 613.

[0045] Specifically, there is an adjustment space between the two side ends of the horizontal adjustment portion 618, and the middle section of the horizontal adjustment portion 618 is arc-shaped (eg Figure 11-12 As shown in the figure), the position of the truss 1 in the horizontal direction can be adjusted by the horizontal adjustment portion 618, wherein the reserved length of the middle section of the horizontal adjustment portion 618 determines the adjustment position and distance of the truss 1 in the horizontal direction.

[0046] like Figure 1-3As shown in Figures 14-18, this embodiment also provides a bracket that can be quickly disassembled and assembled, which can realize rapid installation and removal of photovoltaic components 4 at sea, thereby ensuring rapid construction and guaranteeing the implementation of subsequent operation and maintenance work.

[0047] like Figure 1-3 As shown in FIGS. 7-9 , specifically, the bracket 2 includes an inclined beam 23, a column 21 is connected below the inclined beam 23, the column 21 is connected to the upper chord 111, the photovoltaic module 4 is arranged on the inclined beam 23, a purlin 3 is arranged between the photovoltaic module 4 and the inclined beam 23, and an inclined brace 22 is arranged between the column 21 and the inclined beam 23 through bolt connection. Among them, the inclined brace 22 adopts C-shaped channel steel, and two C-shaped channel steels are connected together by bolts.

[0048] like Figure 14-15 As shown, specifically, a bracket connection structure is connected between the bracket 2 and the upper chord rod 111, and the bracket connection structure includes a bracket beam connection structure 62 and a bracket rod connection structure 63, and the bracket 2 is connected to the upper chord rod 111 by this structure, and the bracket connection structure includes a vertical pole connected to the bracket 2, and a bottom plate is arranged at the bottom of the vertical pole, and the bottom plate is connected to the upper chord rod 111 by U-shaped bolts. Among them, the bottom plate can be a steel plate.

[0049] In this embodiment, based on the above content, the support beam connection structure 62 includes a first U-shaped bolt 621, a first square steel upright 622 and a first connecting steel plate 623. The first square steel upright 622 is connected to the first connecting steel plate 623 by welding. The first connecting steel plate 623 of the support beam connection structure 62 is installed on the upper chord 111 of the truss 1 through the first U-shaped bolt 621, and the inclined beam 23 of the support 2 is installed on the first square steel upright 622 through bolts. The connection form of the support rod connection structure 63 is basically the same as that of the support beam connection structure 62. The support rod connection structure 63 includes a second U-shaped bolt 631, a second square steel upright 632 and a second connecting steel plate 633. The second square steel upright 632 and the second connecting steel plate 633 are connected by welding. The second connecting steel plate 633 of the support beam connection structure 63 is installed on the upper chord 111 of the truss 1 through the second U-shaped bolt 631; different from the support beam connection structure 62, the diagonal brace 22 of the support 2 is connected by bolts and installed on the second square steel upright 632. The columns 21 of the support 2 are fixed by bolt connection, and the columns 21 and the bolts connected to the second square steel upright 632 are used to connect the columns 21 more firmly.

[0050] like Fig.16 As shown, in this embodiment, the purlin connection structure 64 includes an L-shaped angle steel plate 641, and the protruding parts at both ends of the angle steel plate 641 are respectively connected to the inclined beam 23 and the purlin 3 by bolts, so that the angle steel plate 641 connects the inclined beam 23 and the purlin 3.

[0051] like Figure 17-18 As shown, in this embodiment, the component connection structure 65 includes a third U-shaped bolt 651, a T-shaped pressure plate 652 and a third connecting steel plate 653, and a slot for placing the T-shaped pressure block 652 is opened on the photovoltaic component 4. At the same time, both the T-shaped pressure block 652 and the third connecting steel plate 653 are opened with channels for only the protruding end of the third U-shaped bolt 651 to pass through, and the third connecting steel plate 653 is arranged under the purlin 3, so that the two photovoltaic components 4 are installed on the purlin 3 through the third U-shaped bolt 651, the T-shaped pressure plate 652 and the third connecting steel plate 653.

[0052] See also Figure 1-18 When installing a large-span offshore photovoltaic truss support structure at sea, the specific steps are as follows:

[0053] S1: According to the design drawings, complete the prefabrication of trusses 1, brackets 2, purlins 3, photovoltaic modules 4, bracket piles 5 and corresponding connection structures on shore;

[0054] S2: According to the pile foundation position and pile sinking requirements provided by the design, complete the pile sinking work of the support pile 5;

[0055] S3: The pile foundation connection structure 61 is installed on the top of the support pile 5 through two hoop plates 611 and the first locking member 612, and then the truss 1 is hoisted on the upper part of the connecting plate 614 of the pile foundation connection structure 61, and the support pile 5 is connected to the lower chord 112 of the truss 1 through the U-shaped cover plate 615 and the second locking member 616;

[0056] S4: Install the bracket 2 on the upper chord 111 of the truss 1, and install the bracket 2 at the pre-installed position on the truss 1 through the first U-shaped bolt 621 and the second U-shaped bolt 631 on the bracket beam connecting structure 62 and the bracket rod connecting structure 63;

[0057] S5: Install four purlins 3 on the bracket 2, connect the oblique beam 23 and the purlin 3 through the purlin connection structure 64 and fix them with bolts;

[0058] S6: Install the photovoltaic modules 4 on the purlins 3 and fix them via the module connection structure 65, so that the installation of the large-span offshore photovoltaic truss support structure is completed.

[0059] 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 covered within the protection scope of the present invention.

Claims

1. A large-span offshore photovoltaic truss support structure, characterized in that: A truss (1) is arranged on the top of a support pile (5) in a photovoltaic power generation area, wherein the truss (1) as a whole comprises a plurality of independent parts spliced ​​and arranged along the arrangement direction of the support pile (5), a support (2) is arranged on the top of the truss (1), and a photovoltaic module (4) is installed on the support (2); A pile foundation connection structure (61) that can be adjusted vertically and horizontally is provided between the support pile (5) and the truss (1). An intermediate connection member (613) that supports the support pile (5) and the truss (1) is provided in the vertical direction on the pile foundation connection structure (61). A locking portion (617) that cooperates with a first locking member (612) for position adjustment is provided on the intermediate connection member (613). A vertical adjustment interval is provided between the support pile (5) and the truss (1) so that the truss (1) is in a horizontal state on the support piles (5) on both sides. A connecting plate (614) is provided on the top of the intermediate connection member (613). The connecting plate (614) and the truss (1) are connected via a second locking member (616). A horizontal adjustment portion (618) that cooperates with the second locking member (616) is provided on the connecting plate (614).

2. The large-span offshore photovoltaic truss support structure according to claim 1 is characterized in that: The independent part of the truss (1) comprises a chord (11) and a web (12); the web (12) is connected between an upper chord (111) and a lower chord (112) of the chord (11); the upper chord (111) is used to be connected to a bracket (2); and the lower chord (112) is used to be connected to a pile foundation connection structure (61).

3. The large-span offshore photovoltaic truss support structure according to claim 2 is characterized in that: A chord connecting portion (13) is provided between the chords (11) of adjacent independent parts, and a web connecting portion (14) is provided between the webs (12) of adjacent independent parts.

4. The large-span offshore photovoltaic truss support structure according to claim 3 is characterized in that: The chord connecting part (13) and the web connecting part (14) are both provided with angled plates, the angled plates cover the outer surface of the chord (11) or web (12) matched therewith, the angled plates are provided with through-fixing parts connected to the chord (11) or web (12), and bolt connections are provided on the angled parts of the angled plates.

5. The large-span offshore photovoltaic truss support structure according to claim 1 or 2, characterized in that: The intermediate connecting piece (613) is arranged outside the support pile (5), and a clamping plate (611) is arranged on the outer surface of the support pile (5). The first locking piece (612) is arranged on the ear plate of the clamping plate (611) and is connected to the intermediate connecting piece (613).

6. The large-span offshore photovoltaic truss support structure according to claim 2 is characterized in that: The lower chord rod (112) is provided with a reserved groove (113) in the vertical direction, the reserved groove (113) is communicated with the horizontal adjustment portion (618) and cooperates with the second locking member (616), and the lower chord rod (112) is provided with a U-shaped cover plate (615) at its upper part, and the U-shaped cover plate (615) is provided with a through hole (619) that cooperates with the second locking member (616).

7. The large-span offshore photovoltaic truss support structure according to claim 1 is characterized in that: There is an adjustment space between the two side ends of the horizontal adjustment portion (618), and the middle section of the horizontal adjustment portion (618) is arc-shaped.

8. The large-span offshore photovoltaic truss support structure according to claim 2 is characterized in that: The support (2) comprises an inclined beam (23), a column (21) is connected below the inclined beam (23), the column (21) is connected to an upper chord (111), an inclined brace (22) is connected between the column (21) and the inclined beam (23), the photovoltaic module (4) is arranged on the inclined beam (23), and a purlin (3) is connected between the photovoltaic module (4) and the inclined beam (23).

9. The large-span offshore photovoltaic truss support structure according to claim 2, characterized in that: A bracket connection structure is connected between the bracket (2) and the upper chord (111), and the bracket connection structure comprises a vertical pole connected to the bracket (2), a bottom plate is arranged at the bottom of the vertical pole, and the bottom plate and the upper chord (111) are connected by U-shaped bolts.

10. The large-span offshore photovoltaic truss support structure according to claim 1, characterized in that: The locking portion (617) comprises a plurality of reserved holes which are arranged at intervals on the middle connecting member (613).

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