Deep water jacket installation and method of installing the same

Abstract

The application relates to the technical field of guide pipe rack, and discloses a deep-water guide pipe rack device and a construction method thereof, which comprises a first guide pipe rack, a steel pile and a second guide pipe rack, and a through hole is formed in the first foot column. The steel pile is suitable for being penetrated into the through hole, the bottom of the steel pile is inserted into the mud, a first grouting gap is left between the outer wall of the steel pile and the inner wall of the through hole, and a cavity is formed in the top end of the steel column. The second guide pipe rack comprises a second foot column and a supporting piece, a connecting section is arranged at the bottom end of the second foot column and corresponds to the through hole, the connecting section is suitable for being inserted into the cavity of the steel pile in the through hole, and high-strength cement is suitable for being grouted in a second grouting gap. The deep-water guide pipe rack is divided into the first guide pipe rack, the second guide pipe rack and the steel pile, the requirements for the construction factory and the construction ship can be reduced, the construction and construction resources are used, the construction and construction of the guide pipe rack with a water depth of 100 meters can be completed, and the construction cost of the guide pipe rack of the wind turbine foundation of the 100-meter-deep wind field is reduced.

Description

Technical Field

[0001] This invention relates to the field of jacket structures, and more specifically to deep-water jacket structure devices and their construction methods. Background Technology

[0002] Offshore wind power is characterized by abundant resources, high power generation hours, no land occupation, and suitability for large-scale development, making it the latest frontier in global wind power development. In recent years, with the rapid development of offshore wind power, the opening of near-shore offshore wind power is gradually approaching saturation, and the construction of wind farms in deep-sea areas has become an inevitable trend.

[0003] In existing technologies, when installing offshore wind power equipment in nearshore areas, a guide frame needs to be installed in a designated area first. After the guide frame is installed, steel piles are driven into the soil layer in the sea area to secure them firmly. The guide frame is then dismantled, and a jacket frame is installed on the steel piles. After the jacket frame is installed, the wind turbine can be mounted on it, completing the construction of the nearshore offshore wind power equipment. Deep-sea wind farms will have water depths of 50-100 meters and more severe wave conditions. In addition to the increased water depth, the capacity of wind turbines in deep-sea wind farms will also increase further. Currently, the single-unit capacity of wind turbines in wind farms with water depths of less than 50 meters has reached 16MW, and deep-sea wind turbines will develop towards 20MW. Due to these two factors, the foundations for wind turbines in deep-sea wind farms will mainly adopt jacket foundations. The increased waves and water depth will cause the overall height of the jacket foundation to reach 80-130 meters, and the weight to reach 2000-4000 tons. Due to the enormous height and weight of the jacket, construction plants are unable to complete the overall construction of jackets of this level, and construction vessels are unable to install jackets of this level at sea, making it impossible to build offshore wind power in deep waters. Summary of the Invention

[0004] In view of this, the present invention provides a deep-water jacket structure to solve the problem that offshore wind power cannot be built in deep-sea areas.

[0005] In a first aspect, the present invention provides a deep-water jacket support device, comprising:

[0006] The first guide frame includes a first foot post and a support frame. A plurality of first foot posts are connected by the support frame. The first foot posts are provided with through holes and the through holes are arranged along the axial direction of the first foot posts.

[0007] A steel pile is adapted to be inserted into the mud through the through hole. A first grouting gap is formed between the outer wall of the steel pile and the inner wall of the through hole. Cement is suitable for grouting in the first grouting gap. A cavity is provided at the top of the steel pile along its axial direction.

[0008] The second guide frame includes a second foot post and a support member. Multiple second foot posts are connected by the support member. The bottom end of the second foot post is provided with a connecting section corresponding to the through hole. The connecting section is adapted to be inserted into the cavity of the steel pile in the through hole. A second grouting gap is formed between the outer wall of the connecting section and the inner wall of the steel pile cavity. High-strength cement is suitable for grouting in the second grouting gap.

[0009] By dividing the deep-water jacket into a first jacket, a second jacket, and steel piles, the requirements for the construction yard and construction vessels can be reduced. In other words, the construction and installation of the 100-meter deep-water jacket can be completed using conventional construction and installation resources, thereby reducing the construction cost of the wind turbine foundation jacket for the 100-meter deep-water wind farm. Furthermore, during the installation of the first jacket, it serves as part of the deep-water jacket system and can also be used as a positioning frame for the steel piles, eliminating the need for separate construction, installation, and dismantling, thus improving the installation efficiency of the deep-water jacket system.

[0010] In one alternative implementation, a plurality of the first foot posts are spaced apart in the vertical direction.

[0011] By setting the first support column vertically, the rigidity of the first guide frame can be increased, and the natural vibration period and rotation angle of the whole machine can be reduced.

[0012] In one alternative embodiment, the top of the first guide frame is provided with a connecting mechanism, and a measuring mechanism is detachably provided on the connecting mechanism.

[0013] By detachably mounting the measuring mechanism on the connecting mechanism, it is convenient to measure the verticality and elevation of the steel pile. After the measurement is completed, the measuring mechanism can be detached for easy reuse.

[0014] In one alternative embodiment, the connecting mechanism has a slot.

[0015] The measuring mechanism includes a third support column, a fixing frame, and a measuring platform. Multiple third supports are connected via the fixing frame. The measuring platform is fixedly mounted on the top of each third support column, and a connecting portion is fixedly mounted on the bottom of each third support column corresponding to a slot. The connecting portion is adapted to switch between insertion into and withdrawal from the slot. A limiting portion is provided on the connecting portion corresponding to the slot, and the limiting portion is located outside the slot. This facilitates the disassembly and installation of the measuring mechanism and the connecting mechanism.

[0016] In one alternative embodiment, the connecting portion includes an insertion section adapted to be inserted into the slot. The insertion section is provided with a hydraulic mechanism and a controller. The controller is electrically connected to the hydraulic mechanism and is used to control the hydraulic mechanism to extend and press against the inner wall of the slot, or to control the hydraulic mechanism to retract so that a gap is left between the hydraulic mechanism and the inner wall of the slot.

[0017] The hydraulic mechanism is pushed out by the controller, so that it presses against the inner wall of the slot, making the measuring mechanism and the connecting mechanism firmly connected. This can restrict the measuring mechanism from translating or moving vertically within the connecting mechanism.

[0018] In one alternative embodiment, the hydraulic mechanism is provided in multiple sets at intervals along the axial direction of the insertion section.

[0019] This ensures a secure connection between the measuring mechanism and the connecting mechanism, restricts the measuring mechanism's translational movement within the connecting mechanism, and also restricts the measuring mechanism's vertical movement within the connecting mechanism.

[0020] In one alternative embodiment, the first duct frame further includes an anti-sinking mechanism, which is horizontally disposed at the bottom of the first duct frame.

[0021] The anti-sinking mechanism supports the entire weight of the first guide frame on the mud surface, preventing it from sinking. At the same time, the anti-sinking mechanism can also support the first guide frame and prevent it from being pushed over by waves.

[0022] In one optional embodiment, the anti-sinking mechanism includes a first connector, a second connector, a third connector, and an adding part. The first connector, the second connector, and the third connector are all connected to the support frame, and steel plates are provided on the first connector, the second connector, and the third connector.

[0023] The addition part is located between the first connector, the second connector and the third connector.

[0024] Steel plates are used to increase the contact area between the anti-settlement mechanism and the mud surface, reducing the subsidence of the first guide frame. Based on calculations for the specific operating environment, connectors and steel plates can be added to the auxiliary section to increase the weight and area of ​​the anti-settlement mechanism.

[0025] In one alternative embodiment, a guide opening is provided at the top of the first anchor post along the circumference of the through hole to facilitate the insertion of the steel pile into the through hole.

[0026] Secondly, the present invention also provides a construction method for a deep-water jacket structure, comprising:

[0027] The first guide frame is hoisted into the water so that its bottom is placed on the mud surface;

[0028] A steel pile is inserted into the mud through the through hole of the first guide frame. A first grouting gap is formed between the outer wall of the steel pile and the inner wall of the through hole. Cement is poured into the first grouting gap to fix the steel pile and the first guide frame.

[0029] The connecting section of the second guide frame is inserted into the cavity of the steel pile in the through hole. A second grouting gap is formed between the outer wall of the connecting section and the inner wall of the steel pile cavity. High-strength cement is injected into the second grouting gap to complete the installation of the deep-water guide frame. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a front view of the first jacket in a deep-water jacket structure according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A top view of the dustproof mechanism in the first guide frame shown;

[0033] Figure 3 for Figure 1 A top view showing the connection between the connecting structure and the first support column in the first jacket structure;

[0034] Figure 4 This is a front view of the second jacket in a deep-water jacket system according to an embodiment of the present invention;

[0035] Figure 5 This is a plan view of the connection between the first jacket and the steel pile in a deep-water jacket device according to an embodiment of the present invention;

[0036] Figure 6 for Figure 5 Cross-sectional view of the connection between the first anchor post and the steel pile;

[0037] Figure 7 This is a plan view of the connection between the first jacket, the second jacket, and the steel pile in a deep-water jacket device according to an embodiment of the present invention;

[0038] Figure 8 for Figure 7 Cross-sectional view of the first anchor post, steel piles, and connecting section;

[0039] Figure 9 This is a front view of the measuring mechanism in a deep-water jacket support device according to an embodiment of the present invention;

[0040] Figure 10 for Figure 9 Enlarged schematic diagram of the middle connecting part;

[0041] Figure 11 This is a plan view of the connection between the measuring mechanism and the first jacket in a deep-water jacket device according to an embodiment of the present invention;

[0042] Figure 12 This is a schematic diagram showing the retracted state of the hydraulic mechanism in the connecting section;

[0043] Figure 13 This is a schematic diagram showing the hydraulic mechanism in the connected section in the extended state.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. First guide frame; 101. First support column; 1011. Guide opening; 1012. First grouting gap; 102. Connecting mechanism; 103. Anti-settlement mechanism; 1031. Adding part; 1032. First connector; 1033. Steel plate; 1034. Second connector; 1035. Third connector; 104. First support frame; 105. Second support frame; 106. Third support frame;

[0046] 2. Second guide frame; 201. Second support column; 202. Connecting section; 2021. Limiting component; 203. Transition section; 204. Support component;

[0047] 3. Steel piles; 301. Second grouting gap;

[0048] 4. Muddy surface; 5. Water surface;

[0049] 6. Measuring mechanism; 601. Third support column; 602. Measuring platform; 603. Connecting part; 6031. Insertion section; 6032. Hydraulic mechanism; 6033. Limiting part; 6034. Guide section; 604. Fixing frame. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] The following is combined with Figure 1-13 The following describes embodiments of the present invention.

[0052] In related technologies, when installing offshore wind power equipment in nearshore areas, a guide frame needs to be installed in a designated area first. After the guide frame is installed, steel piles are driven into the soil layer in the sea area according to the guide frame to secure them firmly. Then, the guide frame needs to be dismantled, and a jacket frame is installed on the steel piles. After the jacket frame is installed, the wind turbine can be installed on the jacket frame, completing the construction of the nearshore offshore wind power equipment. Deep-sea wind farms will have water depths of 50-100 meters, with more severe wave conditions. In addition to the increased water depth, the capacity of wind turbines in deep-sea wind farms will also increase further. Currently, the single-unit capacity of wind turbines in wind farms with water depths of less than 50 meters has reached 16MW, and deep-sea wind turbines will develop towards 20MW. Due to these two factors, the foundations for wind turbines in deep-sea wind farms will mainly adopt jacket foundations. The increased waves and water depth will cause the overall height of the jacket foundation to reach 80-130 meters, and the weight to reach 2000-4000 tons. Due to the enormous height and weight of the jacket, construction plants are unable to complete the overall construction of jackets of this level, and construction vessels are unable to install jackets of this level at sea, making it impossible to build offshore wind power in deep waters.

[0053] According to an embodiment of the present invention, a deep-water jacket support device is provided, comprising: a first jacket 1, steel piles 3, and a second jacket 2. The first jacket 1 includes first support columns 101 and a support frame. Multiple first support columns 101 are connected and fixed via the support frame to ensure secure fixing between them. Each first support column 101 has a through hole arranged along its axial direction. The steel piles 3 are adapted to penetrate the through holes, with their bottoms inserted into the mud. Figure 6 As shown, a first grouting gap 1012 is left between the outer wall of the steel pile 3 and the inner wall of the through hole. The first grouting gap 1012 is suitable for grouting cement. A cavity is opened at the top of the steel column, and the cavity is arranged along the axial direction of the steel pile 3. The second guide frame 2 includes second foot posts 201 and support members 204. Multiple second foot posts 201 are connected and fixed by the support members 204. A connecting section 202 is provided at the bottom end of the second foot post 201 corresponding to the through hole, such as... Figure 7 and Figure 8 As shown, the connecting section 202 is suitable for insertion into the cavity of the steel pile 3 in the through hole, and a second grouting space is left between the outer wall of the connecting section 202 and the inner wall of the cavity of the steel pile 3. The second grouting gap 301 is suitable for grouting high-strength cement.

[0054] In this deep-water jacket installation, the first jacket 1 is lowered into the seawater, so that its bottom contacts the mud surface 4. The mud surface 4 supports the first jacket 1. Then, steel piles 3 are inserted through the through hole of the first leg column, guiding the steel piles 3 to be driven into the mud to the designed depth along the direction of the through hole. Cement is poured into the first grouting gap 1012 to firmly fix the first jacket 1 and the steel piles 3. Then, the connecting section 202 of the second jacket 2 is inserted into the cavity of the steel piles 3 in the through hole. High-strength cement is poured into the second grouting gap 301 to firmly fix the second jacket 2 to the first jacket 1 and the steel piles 3, thus completing the installation of the 100-meter deep jacket. By dividing the deep-water jacket into a first jacket 1, a second jacket 2, and steel piles 3, the requirements for the construction plant and construction vessels can be reduced. In other words, the construction and installation of the 100-meter deep-water jacket can be completed using conventional construction and installation resources, thereby reducing the construction cost of the wind turbine foundation jacket for the 100-meter deep-water wind farm. Furthermore, during the installation of the first jacket 1, the first jacket 1 is not only part of the deep-water jacket device but can also be used as a positioning frame for the steel piles 3. It does not require separate construction, installation, and dismantling, which can improve the installation efficiency of the deep-water jacket device.

[0055] Specifically, such as Figure 1 As shown, the support frame includes a first support frame 104, a second support frame 105, and a third support frame 106. The first support frame 104 can be a horizontal support frame, the second support frame 105 can be a vertical support frame, and the third support frame 106 can be an inclined support frame. Multiple first support posts 101 are fixed by multiple support frames in different directions, ensuring a secure connection between the multiple first support posts 101. The first guide frame 1 can be equipped with four first support posts 101, arranged in a square or rectangular shape. The length and cross-sectional area of ​​the first support posts 101 can be designed according to the seawater depth. Depending on the hardness of the seabed mud, the number of first support posts 101 can also be three, five, or six, etc., without a specific limit here.

[0056] Specifically, such as Figure 8 As shown, the cavity at the top of the steel pile 3 can be cylindrical or square, etc., without specific limitations. Since the second grouting gap 301 is relatively small, in order to ensure that the second guide frame 2 is firmly connected to the first guide frame 1 and the steel pile 3, high-strength cement needs to be injected into the second grouting gap 301.

[0057] Specifically, such as Figure 8 As shown, the bottom end of the connecting section 202 can be set in a conical shape. The conical structure guides the connecting section 202, making it easier to insert into the cavity of the steel pile 3, thus facilitating construction and installation. A limiting member 2021 can also be set on the connecting section 202 to limit the insertion depth of the connecting section 202.

[0058] Specifically, such as Figure 4 As shown, a transition section 203 can be provided at the top of the second jacket 2. The transition section 203 is connected to the top of the second support column 201. A flange is provided at the top of the transition section 203, and the flange is connected to the bottom of the wind turbine tower.

[0059] Specifically, such as Figure 1 As shown, multiple first support columns 101 are arranged at intervals along the vertical direction. By arranging the first support columns 101 vertically, the rigidity of the first guide frame 1 can be improved, and the natural vibration period and rotation angle of the whole machine can be reduced.

[0060] Specifically, such as Figure 1 , Figure 3 and Figure 11 As shown, the top of the first guide frame 1 is provided with a connecting mechanism 102, and a measuring mechanism 6 is detachably provided on the connecting mechanism 102. After the first guide frame 1 is installed, the measuring mechanism 6 can be installed on the top of the first guide frame 1 for measurement, which is convenient for measuring the verticality and elevation of the steel pile 3, and facilitates the subsequent installation of the steel pile 3 and grouting of the first grouting gap 1012. After the grouting is completed, the measuring mechanism 6 can be removed for reuse.

[0061] Specifically, such as Figure 1 and Figure 3 As shown, the connecting mechanism 102 can be set on the first foot post 101, and the number of connecting mechanisms 102 can be set in a corresponding manner to the number of first foot posts 101.

[0062] Specifically, such as Figure 1 and Figure 3 As shown, the connecting mechanism 102 has a slot. Figure 9 As shown, the measuring mechanism 6 includes a third support column 601, a fixing frame 604, and a measuring platform 602. Multiple third supports 601 are connected and fixed by the fixing frame 604. The measuring platform 602 is fixedly installed on the top of the third support column 601, and the connecting part 603 is fixedly installed on the bottom of the third support column 601 corresponding to the slot. The connecting part 603 is adapted to switch between being inserted into the slot and being removed from the slot. When the measuring mechanism 6 needs to be installed, the connecting part 603 of the measuring mechanism 6 is inserted into the slot, so that the measuring mechanism 6 is fixed on the first guide frame 1. When the measuring mechanism 6 needs to be disassembled, the connecting part 603 of the measuring mechanism 6 is pulled out from the slot, and the measuring mechanism 6 can be disassembled from the first guide frame 1.

[0063] Specifically, such as Figure 10As shown, a limiting part 6033 may be provided on the connecting part 603. The limiting part 6033 may be an annular plate. The limiting part 6033 is arranged in a ring around the circumferential direction of the connecting part 603. When the connecting part 603 is inserted into the slot, the limiting part 6033 is located outside the slot and abuts against the connecting mechanism 102 to prevent the connecting part 603 from being inserted too deeply, which would prevent the measuring mechanism 6 from being disassembled normally.

[0064] Specifically, such as Figure 10 As shown, the connecting part 603 includes an insertion section 6031, which is adapted to be inserted into the interior of a slot. A hydraulic mechanism 6032 and a controller are provided within the insertion section 6031. The controller is electrically connected to the hydraulic mechanism 6032. Figure 13 As shown, the hydraulic mechanism 6032 is pushed out by the controller, causing it to press against the inner wall of the slot, thus firmly connecting the measuring mechanism 6 and the connecting mechanism 102. This restricts both the translational and vertical movement of the measuring mechanism 6 within the connecting mechanism 102. Figure 12 As shown, the hydraulic mechanism 6032 can be retracted by the controller, so that there is a gap between the hydraulic mechanism 6032 and the inner wall of the slot, so that the measuring mechanism 6 can be removed from the connecting mechanism 102.

[0065] Specifically, the hydraulic mechanism 6032 can be composed of a hydraulic cylinder and a hydraulic pump station. The hydraulic pump station and controller can be set on the measuring platform 602 for easy operation by the staff.

[0066] Specifically, the contact end of the hydraulic mechanism 6032 with the inner wall of the slot can be provided with an end plate made of a material with a high coefficient of friction. By increasing the coefficient of friction between the hydraulic mechanism 6032 and the slot, the connection between the measuring mechanism 6 and the connecting mechanism 102 can be ensured to be stable.

[0067] Specifically, such as Figure 10 As shown, multiple sets of hydraulic mechanisms 6032 are arranged at intervals along the axial direction of the insertion section 6031, such as... Figure 10 As shown, two sets of hydraulic mechanisms 6032 are provided on the insertion section 6031. The two sets of hydraulic mechanisms 6032 are respectively located near the upper and lower ends of the insertion section 6031. When installing the measuring mechanism 6, after the insertion section 6031 is inserted into place, the controller simultaneously pushes multiple sets of hydraulic mechanisms 6032 to ensure that the measuring mechanism 6 is firmly connected to the connecting mechanism 102, restricting the measuring mechanism 6 from translating within the connecting mechanism 102, and also restricting the measuring mechanism 6 from moving vertically within the connecting mechanism 102.

[0068] Specifically, such as Figure 10 As shown, the end of the insertion segment 6031 is provided with a guide segment 6034, which is tapered to facilitate the insertion of the insertion segment 6031 into the slot.

[0069] Specifically, such as Figure 11 As shown, when the measuring mechanism 6 is installed on the first guide frame 1, the measuring platform 602 of the measuring mechanism 6 should be exposed above the water surface 5 to facilitate the measurement work of the staff.

[0070] Specifically, such as Figure 1 , Figure 2 and Figure 5 As shown, the first jacket 1 also includes an anti-sinking mechanism 103, which is located at the bottom of the first jacket 1 and is horizontally positioned. Figure 7 and Figure 11 As shown, after the first jacket 1 is hoisted into the water, the anti-sinking mechanism 103 is used on the mud surface 4 to support the weight of the entire first jacket 1 and prevent the first jacket 1 from sinking. At the same time, the anti-sinking mechanism 103 can support the first jacket 1 and prevent the first jacket 1 from being pushed over by the waves.

[0071] Specifically, such as Figure 2 As shown, the anti-sinking mechanism 103 includes a first connecting member 1032, a second connecting member 1034, a third connecting member 1035, and an additive part 1031. The first connecting member 1032, the second connecting member 1034, and the third connecting member 1035 are all connected to the support frame, and steel plates 1033 are provided on the first connecting member 1032, the second connecting member 1034, and the third connecting member 1035. The steel plates 1033 increase the contact area between the anti-sinking mechanism 103 and the mud surface 4, reducing the sinking of the first guide frame 1. The additive part 1031 is located between the first connecting member 1032, the second connecting member 1034, and the third connecting member 1035. Based on calculations for the specific operating environment, connecting members and steel plates 1033 can be provided in the additive part 1031 to increase the weight and area of ​​the anti-sinking mechanism 103. The first connector 1032, the second connector 1034, and the third connector 1035 can be arranged in a crisscross pattern to ensure that the steel plate 1033 is stably fixed on the anti-sinking mechanism 103, while also increasing the weight of the anti-sinking mechanism 103.

[0072] Specifically, such as Figure 1 As shown, a guide opening 1011 is provided at the top of the first anchor post 101 along the circumferential direction of the through hole, so that the steel pile 3 can be inserted into the through hole.

[0073] The operating principle of the deep-water jacket support device in this embodiment is as follows:

[0074] During the installation of the deep-water jacket foundation, the first jacket foundation 1 is hoisted into the water using a crane vessel, allowing the anti-sinking mechanism 103 on the first jacket foundation 1 to sit on the mud surface 4. At this point, the first jacket foundation 1 can be self-sustaining underwater. Figure 11As shown, the measuring mechanism 6 is then hoisted so that its insertion section 6031 is inserted into the slot of the connecting mechanism 102. When the insertion section 6031 is in place, the operator controls the hydraulic mechanism 6032 via the controller to push it out and press it against the inner wall of the slot, thus stably fixing the measuring mechanism 6 onto the connecting mechanism 102. Afterwards, the steel pile 3 can be inserted into the through hole, as shown. Figure 5 As shown, after the steel pile 3 is installed and the measurements meet the design requirements, grouting is performed on the first grouting gap 1012. After grouting is completed, the measuring mechanism 6 is removed. Once the cement reaches the design strength, the second guide frame 2 can be installed. Figure 7 As shown, the connecting section 202 of the second jacket 2 is inserted into the cavity of the steel pile 3 in the through hole. High-strength cement is poured into the second grouting gap 301. After the high-strength cement reaches its design strength, the second jacket 2 is firmly fixed to the first jacket 1 and the steel pile 3, completing the installation of the 100-meter deep-water jacket. By dividing the deep-water jacket into the first jacket 1, the second jacket 2, and the steel pile 3, the requirements for the construction yard and construction vessels can be reduced. That is, conventional construction and engineering resources can be used to complete the construction and installation of the 100-meter deep-water jacket, reducing the construction cost of the wind turbine foundation jacket for the 100-meter deep-water wind farm.

[0075] According to an embodiment of the present invention, in another aspect, a construction method for a deep-water jacket structure is provided, comprising:

[0076] The first guide frame 1 is hoisted into the water so that the bottom of the first guide frame 1 is placed on the mud surface 4;

[0077] The steel pile 3 is inserted into the mud through the through hole of the first guide frame 1. A first grouting gap 1012 is formed between the outer wall of the steel pile 3 and the inner wall of the through hole. Cement is poured into the first grouting gap 1012 to fix the steel pile 3 and the first guide frame 1.

[0078] Insert the connecting section 202 of the second jacket 2 into the cavity of the steel pile 3 in the through hole. A second grouting gap 301 is formed between the outer wall of the connecting section 202 and the inner wall of the cavity of the steel pile 3. High-strength cement is injected into the second grouting gap 301 to complete the installation of the deep-water jacket.

[0079] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A deep-water jacket support device, characterized in that, include: The first guide frame (1) includes a first foot post (101) and a support frame. A plurality of first foot posts (101) are connected by the support frame. The first foot post (101) has a through hole and the through hole is arranged along the axial direction of the first foot post (101). A steel pile (3) is adapted to be inserted into the mud through the through hole. A first grouting gap (1012) is formed between the outer wall of the steel pile (3) and the inner wall of the through hole. Cement is suitable to be poured into the first grouting gap (1012). A cavity is provided at the top of the steel pile (3) along its axial direction. The second guide frame (2) includes a second foot post (201) and a support member (204). Multiple second foot posts (201) are connected by the support member (204). The bottom end of the second foot post (201) is provided with a connecting section (202) corresponding to the through hole. The connecting section (202) is adapted to be inserted into the cavity of the steel pile (3) in the through hole. A second grouting gap (301) is formed between the outer wall of the connecting section (202) and the inner wall of the cavity of the steel pile (3). The second grouting gap (301) is suitable for grouting high-strength cement. The top of the first guide frame (1) is provided with a connecting mechanism (102), and a measuring mechanism (6) is detachably provided on the connecting mechanism (102). The connecting mechanism (102) has a slot; The measuring mechanism (6) includes a third column (601), a fixing frame (604), and a measuring platform (602). Multiple third columns (601) are connected via the fixing frame (604). The measuring platform (602) is fixedly mounted on the top of the third column (601). A connecting part (603) is fixedly mounted on the bottom of the third column (601) corresponding to the slot. The connecting part (603) is adapted to switch between inserting into the slot and withdrawing from the slot. A limiting part (6033) is provided on the connecting part (603) corresponding to the slot. The limiting part (6033) is located outside the slot. The first duct frame (1) also includes an anti-sinking mechanism (103), which is horizontally disposed at the bottom of the first duct frame (1); The installation steps for the deep-water jacket are as follows: The first jacket (1) is hoisted into the water by a crane vessel, so that the anti-sinking mechanism (103) on the first jacket (1) sits on the mud surface. Then, the measuring mechanism (6) is hoisted and inserted into the slot of the connecting mechanism (102). Then, the steel pile (3) is inserted into the through hole. After the steel pile (3) is installed and the measurement meets the design requirements, the first grouting gap (1012) is grouted. After the grouting is completed, the measuring mechanism (6) is removed. After the cement reaches the design strength, the second jacket (2) can be installed.

2. The deep-water jacket support device according to claim 1, characterized in that, Multiple first foot posts (101) are spaced apart in the horizontal direction.

3. The deep-water jacket support device according to claim 1, characterized in that, The connecting part (603) includes an insertion section (6031) adapted to be inserted into the slot. The insertion section (6031) is provided with a hydraulic mechanism (6032) and a controller. The controller is electrically connected to the hydraulic mechanism (6032). The controller is used to control the hydraulic mechanism (6032) to extend and press against the inner wall of the slot, or the controller is used to control the hydraulic mechanism (6032) to retract so that a gap is left between the hydraulic mechanism (6032) and the inner wall of the slot.

4. The deep-water jacket support device according to claim 3, characterized in that, The hydraulic mechanism (6032) is provided in multiple sets at intervals along the axial direction of the insertion section (6031).

5. The deep-water jacket support device according to claim 4, characterized in that, The anti-sinking mechanism (103) includes a first connector (1032), a second connector (1034), a third connector (1035), and an addition part (1031). The first connector (1032), the second connector (1034), and the third connector (1035) are all connected to the support frame. The first connector (1032), the second connector (1034), and the third connector (1035) are provided with steel plates (1033). The addition part (1031) is disposed between the first connector (1032), the second connector (1034) and the third connector (1035).

6. The deep-water jacket support apparatus according to any one of claims 1 to 4, characterized in that, The top of the first foot post (101) is provided with a guide opening (1011) along the circumference of the through hole.

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