Connecting cap type anchoring structure for offshore suspension cable photovoltaic

Abstract

The connecting cap type anchoring structure comprises a pile foundation and a connecting cap connected with the upper portion of the pile foundation, the pile foundation is provided with a straight pile and an inclined pile which are adjacently arranged, and the pile axis of the inclined pile inclines towards the side close to the pile top of the straight pile relative to the pile axis of the straight pile; a vertically-through reserved space is formed in the connecting cap, a reserved straight pile space and a reserved inclined pile space are arranged in the lower area of the reserved space in a separated mode, and a reserved grouting space communicating the reserved straight pile space with the reserved inclined pile space is arranged in the upper area of the reserved space. The top of the straight pile penetrates through the reserved straight pile space and extends into the reserved grouting space, and the top of the inclined pile penetrates through the reserved inclined pile space and the reserved grouting space and extends to the top of the connecting cap. The pile foundation is of a structure in which the straight piles and the inclined piles are arranged in a combined mode, in other words, the straight piles are adopted as the pressed piles, the inclined piles are adopted as the pulled piles, and the straight piles and the inclined piles are fixedly connected together through the connecting caps to bear force together.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore cable suspension photovoltaic brackets, and in particular to a connection cap type anchoring structure for offshore cable suspension photovoltaic brackets. Background Art

[0002] Compared with the onshore environment, the offshore photovoltaic service environment not only has to withstand greater wind loads, but the pile foundation also faces horizontal loads such as waves, tides, and sea ice. Therefore, large-span structures are often used to reduce the use of pile foundations. The anchoring structure of offshore suspension photovoltaics generally adopts a single-pile anchoring structure or a precast concrete pedestal anchoring structure. In a single-pile anchoring structure, a large pile cross-section is required to resist the horizontal anchoring force.

[0003] The traditional precast concrete cap-type anchoring structure uses an inclined pile structure to insert two inclined piles into the reserved holes of the cap. The gap between the pile and the cap is small, which makes it difficult for the grouting material to enter the gap, making the grouting construction difficult and the grouting structure unreliable. In addition, since the bottom surface of the cap needs to fall on the mud surface and the top surface of the cap needs to be out of the water, the cap is high and wide, resulting in a large amount of concrete and a large weight for the cap. Therefore, the production cost and construction cost of the traditional precast concrete cap-type anchoring structure are relatively high. At the same time, the traditional precast concrete cap-type anchoring structure is equipped with an upper pile body on the cap, and the cable body is connected to the upper pile body. The upper pile body and the cap need to be connected by grouting, which will not only increase the construction process of the upper pile body installation and grouting connection, but also make the construction process complicated and the construction cost too high. Therefore, it is necessary to design a connection cap type anchoring structure for offshore cable photovoltaic to solve the practical engineering problems faced by the above-mentioned anchoring structure. Utility Model Content

[0004] The purpose of the utility model is to provide a connection cap type anchor structure which is not only reasonable in force, safe and reliable, but also reduces the weight of the anchor structure. To this end, the utility model adopts the following technical solutions:

[0005] A connection cap type anchoring structure for offshore suspended photovoltaic power generation, comprising a pile foundation and a connection cap connected to the upper portion of the pile foundation, wherein the pile foundation is provided with adjacently arranged straight piles and inclined piles, wherein the axis of the inclined pile is inclined toward the top of the straight pile relative to the axis of the straight pile; a reserved space is provided in the connection cap, which is passed through from top to bottom, wherein a reserved straight pile space and a reserved inclined pile space are separately provided in the lower region of the reserved space, and a reserved grouting space is provided in the upper region of the reserved space to connect the reserved straight pile space and the reserved inclined pile space The top of the straight pile passes through the reserved straight pile space and extends into the reserved grouting space, the top of the inclined pile passes through the reserved inclined pile space and the reserved grouting space and extends to the top of the connecting cap, and the inclined pile is provided with a pull ring structure at the top of the pile for connecting the side span support foundation of the offshore suspension photovoltaic bracket through an inclined cable; a grouting body is provided in the connecting cap for combining the straight pile and the inclined pile through the reserved grouting space, so that the straight pile and the inclined pile are consolidated as a whole to form a common stress state, and a flexible interception structure is provided in the reserved straight pile space and the reserved inclined pile space.

[0006] Furthermore: the reserved grouting space is pre-arranged with a connecting piece above the reserved vertical pile space, and the connecting piece is flush with the top of the vertical pile and contacts with each other.

[0007] Furthermore: the flexible intercepting structure is provided with a rubber structure at the top or bottom of the reserved straight pile space and the reserved inclined pile space, the rubber structure is provided with a fixing part and a flexible bending part, the fixing part is provided with an anchor bolt connected to the connecting cap, and the flexible bending part can abut against the peripheral surface of the straight pile and the inclined pile.

[0008] Furthermore: the flexible intercepting structure matched with the straight pile is arranged at the top of the reserved straight pile space, and the flexible intercepting structure matched with the inclined pile is arranged at the bottom of the reserved inclined pile space.

[0009] Furthermore: a first gradient guide portion with an enlarged shape is provided at the bottom of the reserved straight pile space, and a second gradient guide portion with an enlarged shape is provided at the top of the reserved inclined pile space.

[0010] Furthermore: the inner diameter of the reserved straight pile space is larger than the outer diameter of the straight pile, and the inner diameter of the reserved inclined pile space is larger than the outer diameter of the inclined pile.

[0011] Furthermore: a pile end plate matched with the top of the inclined pile is arranged on the pull ring structure, and the pile end plate is connected to the top of the inclined pile by bolts.

[0012] Furthermore: a pull plate connected to the inclined cable is provided on the pile end plate, and an inclination angle is formed between the pull plate and the axis of the inclined pile.

[0013] Furthermore: the pile end plate is provided with a stiffening plate connected to the pull plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The pile foundation of the utility model is a structure in which straight piles and inclined piles are arranged together, that is, straight piles are used for compression piles, inclined piles are used for tension piles, and the straight piles and inclined piles are consolidated together by connecting caps to bear the force together. Not only can the inclined pile structure be used to bear the external horizontal force, but the inclined pile structure can also convert the horizontal force into pressure and tension on the inclined piles, so that the compressive and tensile bearing capacity of the pile foundation is much greater than the horizontal bearing capacity; and the connecting cap is set at the upper area of ​​the pile foundation, which has nothing to do with the mud surface position, water depth, and pile height. Therefore, compared with the traditional prefabricated concrete cap-type anchor structure, it can reduce the amount of concrete used in the anchor structure, reduce the weight of the anchor structure, and reduce the construction cost.

[0016] At the same time, the connecting cap of the utility model connects the straight piles which have a higher priority than the inclined piles in the order of pile sinking and the inclined piles which are sunk later into a whole by pouring concrete at one time. The grouting body is cast at the outer periphery and the top of the straight pile and at the outer side of the inclined pile body according to the compression characteristics of the straight pile and the tension characteristics of the inclined pile respectively. Compared with the traditional prefabricated concrete cap grouting method on the side of the pile, the force is more direct and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a plan view of the offshore cable photovoltaic support structure of the utility model;

[0018] Figure 2 This is an elevation view of the offshore cable-suspended photovoltaic support structure of the utility model;

[0019] Figure 3 It is an elevation view of the connection cap type anchoring structure of the utility model;

[0020] Figure 4 It is an elevation view of the pull ring structure on the top of the inclined pile of the anchoring structure of the utility model;

[0021] Figure 5 It is a plan view of the pull ring structure on the top of the inclined pile of the anchoring structure of the utility model;

[0022] Figure 6 This is a structural elevation view of the connection cap of the utility model;

[0023] Figure 7 It is a cross-sectional view of the upper part of the structure of the connecting cap of the utility model;

[0024] Figure 8 It is a cross-sectional view of the middle part of the structure of the connecting cap of the utility model;

[0025] Fig. 9 It is a cross-sectional view of the lower part of the structure of the connecting cap of the utility model.

[0026] The marks in the accompanying drawings are: 1-connecting cap type anchoring structure, 2-inclined cable, 3-side span supporting foundation, 4-photovoltaic module, 5-steel bracket, 6-module cable, 7-steel beam, 8-mid-span supporting foundation, 9-pull ring structure, 901-bolt, 902-pull plate, 903-stiffening plate, 904-pile end plate, 101-inclined pile, 102-straight pile, 103-grouting body, 104-reserved grouting space, 105-reserved straight pile space, 1051-first gradient guide part, 106-reserved inclined pile space, 1061-second gradient guide part, 107-rubber structure, 108-anchor bolt, 109-connecting piece, 11-connecting cap. 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 1-9 As shown, a connection cap type anchoring structure for offshore suspended photovoltaic power generation, the connection cap type anchoring structure 1 comprises a pile foundation and a connection cap 11 connected to the upper part of the pile foundation, the pile foundation is provided with a straight pile 102 and an inclined pile 101 arranged closely together, the straight pile 102 is used for compression resistance, the inclined pile 101 is used for tension resistance, the pile axis of the inclined pile 101 is inclined toward the top side of the straight pile 102 relative to the pile axis of the straight pile 102; a reserved space is provided in the connection cap 11 which is connected vertically, a reserved straight pile space 105 and a reserved inclined pile space 106 are separately provided in the lower area of ​​the reserved space, the reserved straight pile space 105 is used for installing the straight pile 102, a reserved grouting space 104 which connects the reserved straight pile space 105 and the reserved inclined pile space 106 is provided in the upper area of ​​the reserved space, and the straight pile 102 is provided with a plurality of vertical piles. The top of the inclined pile 101 passes through the reserved straight pile space 105 and extends into the reserved grouting space 104. The top of the inclined pile 101 passes through the reserved inclined pile space 106 and the reserved grouting space 104 and extends to the top of the connecting cap 11. The top of the inclined pile 101 is slightly higher than the top of the connecting cap 11. The inclined pile 101 is provided with a pull ring structure 9 at its top end, which is used to connect the side span support foundation 3 of the offshore suspension photovoltaic support through the inclined cable 2. Therefore, the pull ring structure 9 at the top of the inclined pile 101 bears the load transmitted by the inclined cable 2; the connecting cap 11 is provided with a grouting body 103 that combines the straight pile 102 and the inclined pile 101 through the reserved grouting space 104, so that the straight pile 102 and the inclined pile 101 are consolidated as a whole to form a common stress state, and a flexible interception structure is provided in the reserved straight pile space 105 and the reserved inclined pile space 106.

[0029] In this embodiment, the straight pile 102 and the inclined pile 101 are fixed together by the connecting cap 1 to bear the force together, so the connecting cap type anchoring structure 1 has a better horizontal bearing capacity than the single pile structure. In addition, the position of the pile foundation where the connecting cap 11 is located has nothing to do with the mud surface position, water depth, and pile height. As for the traditional precast concrete cap type anchoring structure, it should be noted that its height will increase with the increase of water depth and pile cantilever length, and the amount of cap concrete will increase rapidly in a quadratic relationship with the increase of height. Therefore, compared with the traditional precast concrete cap type anchoring structure, the overall concrete engineering volume of the connecting cap type anchoring structure 1 is small and its own weight is also lighter.

[0030] The material of the connection cap 11 can be steel or concrete.

[0031] In this embodiment, since the reserved space of the connection cap 11 is connected to the reserved straight pile space 105 and the reserved inclined pile space 106 only through the reserved grouting space 104, concrete can be poured once after the pile foundation is completely sunk, and the pouring construction is simple, so only one part needs to be poured once, which greatly simplifies the construction process compared with the traditional prefabricated concrete pedestal anchoring structure that needs to pour three parts and pour three times. It should be noted that since concrete is poured in the reserved space, the pouring material is ordinary and the construction is simple. The pouring material can be ordinary fine stone concrete, which can be directly poured into the concrete. No high-strength grouting material is required, and no grouting pipeline needs to be set, which further reduces material costs and construction costs.

[0032] In this embodiment, the reserved grouting space 104 is pre-arranged with a connector 109 above the reserved vertical pile space 105, and the connector 109 is flush with and in contact with the top of the vertical pile 102, thereby increasing the rigidity of the connection between the connection cap 11 and the vertical pile 102. The connector 109 is made of angle steel.

[0033] In this embodiment, the inner diameter of the reserved straight pile space 105 is slightly larger than the outer diameter of the straight pile 102, and a first gradient guide portion 1051 with an expanded opening is provided at the bottom of the reserved straight pile space 105. The first gradient guide portion 1051 adopts a wedge-shaped chamfer and serves as a guide structure for the straight pile 102 to enter the connection cap 11. At the same time, the inner diameter of the reserved oblique pile space 106 is slightly larger than the outer diameter of the oblique pile 101, and a second gradient guide portion 1061 with an expanded opening is provided at the top of the reserved oblique pile space 106. The second gradient guide portion 1061 also adopts a wedge-shaped chamfer and can also serve as a guide structure for the oblique pile 101 to enter the connection cap 11.

[0034] Based on the above content, the pile foundation construction priority order of the connection cap type anchor structure 1 is to first drive the straight pile 102, then install the connection cap 11, and then drive the inclined pile 101. Among them, the straight pile 102 is driven first, and the positioning of the straight pile 102 is simple and accurate, so the positioning of the overall connection cap type anchor structure 1 is more accurate, and the pile sinking process is simple; after the straight pile 102 is sunk, the connection cap 11 is installed to the top of the straight pile 102, and the inclined pile 101 is inserted and sunk along the second gradient guide part 1061 of the connection cap 11. Due to the existence of the second gradient guide part 1061, the inclined pile 101 is convenient to insert and sink, and the same hammering equipment as the straight pile 102 can be used to sink the pile, which solves the problems of complicated sinking of the inclined pile 101 and the need for special pile sinking equipment, and reduces the cost of pile sinking construction.

[0035] Moreover, compared with the conventional precast concrete pedestal anchor structure process of first sinking piles and then installing the connecting structure, the above-mentioned construction sequence solves the problem that the connecting structure cannot be placed because the distance between the two piles is smaller at the top and larger at the bottom, and also solves the problem that the distance between the two piles is inaccurate and the connecting structure is difficult to install.

[0036] In this embodiment, the flexible intercepting structure is provided with a rubber structure 107 at the top or bottom of the reserved straight pile space 105 and the reserved inclined pile space 106. The rubber structure 107 is provided with a fixed portion and a flexible bending portion. The fixed portion is provided with an anchor bolt 108 connected to the connection cap 11. The flexible bending portion can abut against the circumferential surface of the straight pile 102 and the inclined pile 101. The flexible intercepting structure matched with the straight pile 102 is provided at the top of the reserved straight pile space 105, and the flexible intercepting structure matched with the inclined pile 101 is provided at the bottom of the reserved inclined pile space 106.

[0037] In this embodiment, the rubber structure 107 is a ring-shaped rubber, and the fixed part of its outer ring is fixed to the connecting cap 11 by the anchor bolt 108, and the inner diameter of the flexible bending part of its inner ring is smaller than the outer diameter of the straight pile 102 and the inclined pile 101 at the corresponding position. Therefore, according to the characteristics of the rubber itself, when the straight pile 102 or the inclined pile 101 passes through the rubber structure 107, the flexible bending part can be turned in the same direction as the pile, thereby forming a closed space under the connecting cap 11 after the flexible bending part squeezes the peripheral surface of the pile, which can ensure that the grouting body 103 will not flow out of the connecting cap 11 and enter the sea area.

[0038] On the basis of the above contents, according to the tensile characteristics of the inclined pile 101, an inverted cone concrete pouring can be arranged on the outside of the inclined pile 101 through the second gradient guide portion 1061, that is, a concrete pouring form with a larger top and a smaller bottom is formed, and the inverted cone poured concrete formed has a strong tensile resistance and is more direct and reliable in bearing force than the traditional grouting method on the side of the pile.

[0039] At the same time, since the top of the straight pile 102 is located in the reserved grouting space 104 after passing through the reserved straight pile space 105, according to the compressive characteristics of the straight pile 102, concrete is poured on the outer periphery and top of the pile top of the straight pile 102. The concrete on the top of the straight pile 102 is used to bear the pressure, and the concrete around the pile is used to transfer the bending moment. The force is clear, and it is more direct and reliable than the traditional method of grouting on the side of the pile.

[0040] In this embodiment, a pile end plate 904 that cooperates with the top of the inclined pile 101 is provided on the pull ring structure 9. The pile end plate 904 is connected to the top of the inclined pile 101 by bolts 901. Therefore, the pull ring structure 9 does not require welding or pouring to be installed on the inclined pile 101. The overall construction is simple and the construction cost is lower.

[0041] Among them, a tension plate 902 is provided on the pile end plate 904, and the tension plate 902 is connected to the inclined cable 2 through a cable anchoring device. Since the tension plate 902 is arranged in an inclined direction relative to the pile axis direction of the inclined pile 101 and is inclined toward the offshore suspension photovoltaic, it can adapt to the angle of the cable body tensioning direction. In addition, a stiffening plate 903 connected to the tension plate 902 is provided on the pile end plate 904 to strengthen the connection strength between the pile end plate 904 and the tension plate 902.

[0042] The present embodiment also provides an offshore cable-suspended photovoltaic structure, which is arranged in combination with a connecting cap-type anchoring structure 1. The present embodiment is arranged as a double-span cable structure, with two rows of cable structures arranged transversely, 7 photovoltaic template blocks arranged on each cable structure, and 4 photovoltaic panels arranged on each photovoltaic template block.

[0043] The offshore cable suspension photovoltaic structure includes a stay cable 2, a side span support foundation 3, a photovoltaic module 4, a steel support 5, a module cable 6, a steel beam 7, and a mid-span support foundation 8, wherein the photovoltaic module 4 is fixedly connected to the steel support 5, the steel support 5 is fixed to the module cable 6, and both ends of the module cable 6 are connected to the side span support foundation 3 and the mid-span support foundation 8, forming a support structure for offshore cable suspension photovoltaics. The side span support foundation 3 is connected to the connection cap type anchor structure 1 through the stay cable 2, and the inclined pile 101 is located on one side of the connection cap 11, which is the outer side of the cable suspension photovoltaic arrangement.

[0044] See also Figure 1-9 When constructing the anchoring structure, the specific steps are as follows:

[0045] S1: Process and manufacture the required connection caps 11, straight piles 102, and inclined piles 101 onshore, and transport them to the installation sea area;

[0046] S2: Prioritize the positioning and sinking of the vertical pile 102 by a pile-driving ship;

[0047] S3: After the straight pile 102 is sunk, the reserved straight pile space 105 of the connecting cap 11 is aligned with the straight pile 102 and sunk until the connecting piece 109 is pressed down to the top of the straight pile 102, and the inclined pile 101 is inserted and sunk along the reserved inclined pile space 106;

[0048] S4: pouring the grouting body 103 into the reserved grouting space 104 of the connection cap 11, and stopping the grouting after the surface layer of the grouting body 103 is flush with the top of the connection cap 11;

[0049] S5: The pull ring structure 9 is connected and fixed to the top of the inclined pile 101 by means of bolts 901, so that the pull plate 902 is connected to the inclined cable 2;

[0050] S6: Repeat steps S1-S5 to install the connection cap type anchor structure 1 at other locations around the offshore suspension photovoltaic structure, and install the offshore suspension photovoltaic structure as a whole until the connection cap type anchor structure 1 is connected to the side span support foundation 3 of the offshore suspension photovoltaic structure through the inclined cable 2.

[0051] 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. A connection cap type anchoring structure for offshore suspension photovoltaic, characterized in that: The invention comprises a pile foundation and a connection cap (11) connected to the upper part of the pile foundation, wherein the pile foundation is provided with adjacently arranged straight piles (102) and inclined piles (101), wherein the pile axis of the inclined pile (101) is inclined relative to the pile axis of the straight pile (102) toward the pile top side close to the straight pile (102); a reserved space is provided in the connection cap (11) which is connected vertically, wherein a reserved straight pile space (105) and a reserved inclined pile space (106) are separately provided in the lower area of ​​the reserved space, and a reserved straight pile space (105) and a reserved inclined pile space (106) are provided in the upper area of ​​the reserved space. A reserved grouting space (104) is connected to a reserved inclined pile space (105) and a reserved inclined pile space (106); the top of the straight pile (102) passes through the reserved straight pile space (105) and extends into the reserved grouting space (104); the top of the inclined pile (101) passes through the reserved inclined pile space (106) and the reserved grouting space (104) and extends to the top of the connection cap (11); the inclined pile (101) is provided with a pull ring structure (9) at its pile top for connecting the side span support foundation (3) of the offshore suspension photovoltaic support through the inclined cable (2); The connection cap (11) is provided with a grouting body (103) for connecting the straight pile (102) and the inclined pile (101) via a reserved grouting space (104), and the reserved straight pile space (105) and the reserved inclined pile space (106) are provided with a flexible intercepting structure.

2. A connection cap type anchoring structure for offshore suspension photovoltaic according to claim 1, characterized in that: The reserved grouting space (104) is pre-arranged with a connecting piece (109) above the reserved straight pile space (105), and the connecting piece (109) is flush with the top of the straight pile (102) and in contact with each other.

3. A connection cap type anchoring structure for offshore suspension photovoltaic according to claim 1, characterized in that: The flexible intercepting structure is provided with a rubber structure (107) at the top or bottom of the reserved straight pile space (105) and the reserved inclined pile space (106); the rubber structure (107) is provided with a fixing portion and a flexible bending portion; the fixing portion is provided with an anchor bolt (108) connected to the connection cap (11); and the flexible bending portion can abut against the peripheral surface of the straight pile (102) and the inclined pile (101).

4. A connection cap type anchoring structure for offshore suspension photovoltaic according to claim 1 or 3, characterized in that: The flexible intercepting structure matched with the straight pile (102) is arranged at the top of the reserved straight pile space (105), and the flexible intercepting structure matched with the inclined pile (101) is arranged at the bottom of the reserved inclined pile space (106).

5. A connection cap type anchoring structure for offshore suspension photovoltaic according to claim 1 or 2, characterized in that: A first gradient guide portion (1051) is provided at the bottom of the reserved straight pile space (105), and a second gradient guide portion (1061) is provided at the top of the reserved inclined pile space (106).

6. A connection cap type anchoring structure for offshore suspension photovoltaic according to claim 1, characterized in that: The inner diameter of the reserved straight pile space (105) is larger than the outer diameter of the straight pile (102), and the inner diameter of the reserved inclined pile space (106) is larger than the outer diameter of the inclined pile (101).

7. The connection cap type anchoring structure for offshore suspension photovoltaic according to claim 1, characterized in that: A pile end plate (904) matching with the top of the inclined pile (101) is arranged on the pull ring structure (9), and the pile end plate (904) is connected to the top of the inclined pile (101) via bolts (901).

8. A connection cap type anchoring structure for offshore suspension photovoltaic according to claim 7, characterized in that: The pile end plate (904) is provided with a pull plate (902) connected to the inclined cable (2), and an inclination angle is formed between the pull plate (902) and the pile axis of the inclined pile (101).

9. A connection cap type anchoring structure for offshore suspension photovoltaic according to claim 8, characterized in that: The pile end plate (904) is provided with a stiffening plate (903) connected to the pull plate (902).

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