Pile sinking construction method and device

Abstract

The invention discloses a pile sinking construction method and device, and belongs to the technical field of ocean engineering.The pile sinking construction method comprises the steps that S1, a positioning frame is mounted to a construction position through a semi-submersible crane ship; the transport ship is moved to a conveying position and anchored and positioned; s2, the semi-submersible crane ship is moved to a conveying position, and pile lifting operation is conducted on the pile body on the transport ship through a first crane and a second crane; and S3, the semi-submersible crane ship is moved to the construction position, and pile erecting operation, pile inserting operation, pile pre-sinking operation and pile re-sinking operation are conducted on the pile body based on the positioning frame. The pile sinking construction device comprises a semi-submersible crane ship and a transport ship. The semi-submersible crane ship comprises a first crane and a second crane which can operate independently. The semi-submersible crane ship is provided with a dynamic positioning system which is used for detecting and adjusting the position of the crane ship in real time. And the continuity and efficiency of construction are improved through cooperative operation of the double cranes, so that the whole construction process has higher flexibility and efficiency.

Description

Technical Field

[0001] The present invention relates to the field of marine engineering technology, and in particular to a pile driving construction method and device. Background Art

[0002] In the development process of marine wind energy construction today, as it continues to move towards deep sea, the area of ​​offshore wind farm foundation construction in my country has gradually expanded from shoals and sheltered shallow sea waters to open deep waters. In terms of the type of wind turbine foundation, it is gradually changing from shallow water foundations such as single piles and high pile caps to deep water foundations of jacket structures.

[0003] The foundation of the wind turbine jacket usually consists of four steel pipe piles, and the pile-first method is generally used for construction, that is, four steel pipe piles are first driven into the seabed, and then the jacket legs are inserted into the steel pipe piles to complete the installation. This type of jacket foundation structure of the pile-first method expands the construction scope from the water surface to underwater, and at the same time puts forward extremely high requirements on the construction quality standards, which increases the difficulty of offshore construction.

[0004] Through long-term observations and statistics, it is found that in the offshore environment, the window period for offshore construction is relatively short due to the influence of the southwest monsoon and typhoon in summer and the northeast monsoon in winter. Especially in the complex marine environment of deep sea, the adaptability of using conventional crane ships for pile sinking construction is gradually declining. This is specifically manifested in the following aspects:

[0005] First, the sea conditions in the deep sea are complex and changeable, and the wave resistance of conventional crane vessels is poor, resulting in a reduction in the construction window.

[0006] Second, in complex sea conditions in the deep sea, the efficiency of ships raising and dropping anchors is low, and the safety risks are greatly increased.

[0007] Third, as the water depth increases, the length of the steel pipe piles of the deepwater jacket foundation also increases, and the difficulty of driving the steel pipe piles increases significantly. Moreover, if the ship needs to move when driving the piles, it must re-anchor, which will greatly increase the waiting time of the ship. Summary of the invention

[0008] The object of the present invention is to provide a pile sinking construction method and device to solve the technical problem in the prior art that conventional crane vessels have poor adaptability during pile sinking construction.

[0009] As conceived above, the technical solution adopted by the present invention is:

[0010] In one aspect, the present invention provides a pile driving construction method, comprising:

[0011] S1. Install the positioning frame to the construction position by the semi-submersible crane vessel; move the transport ship to the conveying position and anchor it; S2. Move the semi-submersible crane vessel to the conveying position, and use the first crane and the second crane to lift the piles on the transport ship; S3. Move the semi-submersible crane vessel to the construction position, and perform pile erection, pile insertion, pre-sinking and re-sinking operations on the piles based on the positioning frame.

[0012] Preferably, in S2, the pile lifting operation includes: connecting the hook of the first crane to the pile lifter, and connecting the hook of the second crane to the tail hook; driving the hooks of the first crane and the second crane to rise at the same time, so that the pile body is lifted away from the transport ship, until the distance between the pile body and the deck of the transport ship is greater than a first distance value, and the hooks of the first crane and the second crane stop rising.

[0013] Preferably, in S3, the pile erection operation includes: driving the hooks of the first crane and the second crane to descend simultaneously, and when the distance between the pile lifter and the water surface is less than a second distance value, the hook of the first crane stops descending, and the hook of the second crane continues to descend; when the angle between the axis of the pile body and the water surface is within a preset angle range, the hook of the second crane stops descending and the tail hook is removed; driving the hook of the first crane to lift up so that the pile body is in a vertical state.

[0014] Preferably, in S3, the pile insertion operation includes: driving the first crane to move the pile body so that the bottom of the pile body faces the positioning sleeve of the positioning frame; driving the hook of the first crane to lower so that the pile body passes through the positioning sleeve and is inserted into the underwater foundation.

[0015] Preferably, in S3, the pre-sinking pile operation includes: releasing the connection between the pile body and the pile driver, driving the first crane to lift the pile driver to the semi-submersible crane vessel, and releasing the connection between the hook of the first crane and the pile driver; connecting a hydraulic hammer to the hook of the first crane, driving the first crane to move the hydraulic hammer so that the hydraulic hammer faces the top of the pile body; driving the first crane to lower the hydraulic hammer, and under the pressure of the hydraulic hammer, the pile body sinks into the underwater foundation along its own axis until the distance between the top of the pile body and the water surface is less than a third distance value.

[0016] Preferably, in S3, the re-sinking pile operation includes: driving the hook of the first crane to lift up so that the hydraulic hammer is away from the top of the pile body; at the same time, connecting a pile driver to the hook of the second crane, and installing the pile driver to the top of the pile body through the second crane; driving the first crane to lower the hydraulic hammer, and under the pressure of the hydraulic hammer and the conduction of the pile driver, the pile body continues to sink into the underwater foundation along its own axial direction until the pile body sinks to the target position of the underwater foundation.

[0017] Preferably, in S1, the installation of the positioning frame to the construction position by means of a semi-submersible crane vessel comprises: connecting a lifting rope to each side of the positioning frame; connecting the hooks of the first crane and the second crane to one of the lifting ropes respectively; driving the hooks of the first crane and the second crane to rise simultaneously so that the positioning frame is lifted from the semi-submersible crane vessel; moving the positioning frame to above the construction position by means of the semi-submersible crane vessel; driving the hooks of the first crane and the second crane to be lowered simultaneously until the positioning frame is installed at the construction position.

[0018] Preferably, after the positioning frame is installed at the construction location, the positioning frame is leveled, and the leveling operation includes: setting horizontal detection sensors at the four corners of the positioning frame to obtain horizontal state data of the positioning frame; calculating the difference between the horizontal state data of any two of the horizontal detection sensors based on the obtained horizontal state data, and judging whether the difference is within an error range; if the difference exceeds the error range, adjusting the length of the retractable support leg corresponding to the bottom of the positioning frame until the difference is within the error range.

[0019] Preferably, the distance between the construction position and the conveying position is greater than or equal to 200 m and less than or equal to 300 m.

[0020] On the other hand, the present invention also provides a pile driving construction device, which adopts the above-mentioned pile driving construction method. The pile driving construction device includes a semi-submersible crane vessel and a transport ship. The semi-submersible crane vessel includes a first crane and a second crane that can operate independently; the semi-submersible crane vessel is equipped with a dynamic positioning system for real-time detection and adjustment of its own position.

[0021] Beneficial effects of the present invention:

[0022] The pile sinking construction method proposed in the present invention first installs the positioning frame to the construction position, and then lifts and constructs the pile body. The positioning frame serves as the construction foundation, provides accurate positioning and guidance for subsequent operations such as pile insertion and pile sinking, improves the precision and accuracy of the construction, ensures that the pile body can be accurately inserted into the predetermined position, and effectively solves the problem of difficult pile positioning in a complex marine environment. The semi-submersible crane ship is equipped with a first crane and a second crane that can operate independently and has the ability to work with double hooks, so that the pile lifting, pile insertion and pile sinking operations can be carried out simultaneously or efficiently connected, eliminating the time for anchoring in traditional construction. In addition, the collaborative operation of the double cranes also reduces the time for the main crane to go back and forth on the deck to replace tools, improves the continuity and efficiency of the construction, and makes the entire construction process more flexible and efficient. From the perspective of the overall process, the various steps of the pile sinking construction method proposed in the present invention are connected in an orderly manner and closely coordinated. The transport ship is used to transport the pile body to a suitable position and anchor it, and the semi-submersible crane ship is used to realize lifting and construction operations, which clarifies the division of labor, improves construction efficiency, and reduces waiting time and coordination costs between different links. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a flow chart of a pile driving construction method provided in Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of a semi-submersible crane vessel provided by Embodiment 1 of the present invention when installing a positioning frame;

[0025] Figure 3 It is a schematic diagram of the relative positions of the semi-submersible crane vessel and the transport ship provided in the first embodiment of the present invention;

[0026] Figure 4 is a first schematic diagram of a pile lifting operation provided in the first embodiment of the present invention;

[0027] Figure 5 is a second schematic diagram of the pile lifting operation provided in the first embodiment of the present invention;

[0028] Figure 6 is a first schematic diagram of a pile erection operation provided by the first embodiment of the present invention;

[0029] Figure 7 is a second schematic diagram of the pile erection operation provided in the first embodiment of the present invention;

[0030] Figure 8 is a third schematic diagram of the pile erection operation provided by the first embodiment of the present invention;

[0031] Fig. 9 is a schematic diagram of the plugging operation provided in the first embodiment of the present invention;

[0032] Fig.10is a first schematic diagram of a pre-sinking pile operation provided in the first embodiment of the present invention;

[0033] Fig.11 is a second schematic diagram of the pre-sinking pile operation provided in the first embodiment of the present invention;

[0034] Fig.12 is a first schematic diagram of a pile re-sinking operation provided in the first embodiment of the present invention;

[0035] Fig.13 is a second schematic diagram of the pile re-sinking operation provided in the first embodiment of the present invention;

[0036] Fig.14 is a third schematic diagram of the pile re-sinking operation provided in the first embodiment of the present invention;

[0037] Fig.15 It is a schematic diagram of removing the guide frame provided in the first embodiment of the present invention.

[0038] In the figure:

[0039] 100, pile body; 101, pile driver; 102, tail hook; 200, water surface; 300, underwater foundation;

[0040] 1. Semi-submersible crane vessel; 11. First crane; 12. Second crane; 2. Transport ship; 3. Positioning frame; 31. Positioning sleeve; 4. Hydraulic hammer; 5. Pile driver. DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0045] Embodiment 1

[0046] Figure 1 A flowchart of a pile driving construction method is provided for the first embodiment of the present invention. This embodiment is applicable to the scenario of offshore wind farm construction. The method can be executed by a pile driving construction device, and the pile driving construction device can be controlled by software or manually.

[0047] The pile-sinking construction method proposed in the present invention first installs the positioning frame 3 to the construction position, and then lifts and constructs the pile body 100. The positioning frame 3 serves as the construction basis, and provides accurate positioning and guidance for subsequent operations such as pile insertion and pile sinking, thereby improving the precision and accuracy of the construction, ensuring that the pile body 100 can be accurately inserted into the predetermined position, and effectively solving the problem of difficult positioning of the pile body 100 in a complex marine environment. The semi-submersible crane vessel 1 is equipped with an independently operable first crane 11 and a second crane 12 with double-hook collaborative operation capabilities, so that pile lifting, pile insertion and pile sinking operations can be carried out simultaneously or efficiently connected, eliminating the time for anchoring in traditional construction. In addition, the collaborative operation of the double cranes also reduces the time for the main crane to travel back and forth on the deck to replace tools, improves the continuity and efficiency of the construction, and makes the entire construction process more flexible and efficient. From the overall process point of view, the various steps of the pile-sinking construction method proposed in the present invention are orderly connected and closely coordinated. The transport ship 2 is used to transport the pile body 100 to a suitable position and anchor it, and the semi-submersible crane ship 1 is used to carry out lifting and construction operations, which clarifies the division of labor, improves construction efficiency, and reduces waiting time and coordination costs between different links.

[0048] See also Figures 2 to 15 , the method specifically comprises:

[0049] S1. Install the positioning frame 3 to the construction position by the semi-submersible crane vessel 1; move the transport vessel 2 to the conveying position and drop anchor to position it.

[0050] Among them, the dynamic positioning system of the semi-submersible crane vessel 1 can monitor the position and attitude of the vessel in real time, and ensure that the vessel remains stable in complex sea conditions by adjusting the thrust and direction of the propeller, thereby achieving accurate installation of the positioning frame 3. At the same time, the transport ship 2 moves the hull loaded with the pile body 100 to the designated delivery position according to the predetermined route and navigation system. After arriving at the designated position, the transport ship 2 anchors and positions through the anchoring system to ensure that the ship maintains a stable position during the subsequent lifting process of the pile body 100.

[0051] During the movement of the transport ship 2, the operator closely monitors the ship's route and surrounding environment through radar, satellite positioning and other equipment, and adjusts the course and speed in time to avoid collisions with other ships or obstacles. When dropping anchor, the operator selects the appropriate anchor chain length and anchor type according to the geological conditions of the seabed and the water flow conditions to ensure that the anchor can firmly grasp the seabed and provide stable support for the ship.

[0052] It is understandable that the semi-submersible crane vessel 1, the dynamic positioning system and the transport vessel 2 are all selected from existing equipment in the field, and their working principles and specific structures are not described in detail here.

[0053] Specifically, the installation process of the positioning frame 3 includes: firstly, connecting a lifting rope to each side of the positioning frame 3; and connecting the hooks of the first crane 11 and the second crane 12 to a lifting rope respectively; then, driving the hooks of the first crane 11 and the second crane 12 to rise simultaneously, so that the positioning frame 3 is lifted off the semi-submersible crane vessel 1. Since the two hooks apply force at the same time and lift evenly, the positioning frame 3 can be lifted off the deck of the semi-submersible crane vessel 1 smoothly. During the lifting process, the lifting speed of the hooks remains consistent, ensuring that the positioning frame 3 will not tilt or shake, thereby ensuring the safety and stability of the lifting process.

[0054] Afterwards, the semi-submersible crane vessel 1 is moved to the top of the construction position through the dynamic positioning system and control system of the semi-submersible crane vessel 1. During the movement, the operator can adjust the position and posture of the vessel in real time according to the information provided by various navigation and positioning equipment to ensure that the positioning frame 3 can accurately reach the top of the predetermined installation position.

[0055] Finally, the hooks of the first crane 11 and the second crane 12 are driven to slowly lower again. During the lowering process, the lowering speed of the hooks is also kept synchronous, so that the positioning frame 3 can be lowered smoothly and vertically until it is accurately installed at the construction position. The speed and position accuracy are strictly controlled during the entire lowering process to ensure that the positioning frame 3 is installed accurately.

[0056] The distance between the construction location and the transportation location is greater than or equal to 200 m and less than or equal to 300 m.

[0057] Furthermore, after the positioning frame 3 is installed at the construction position, the positioning frame 3 is leveled, and the leveling operation includes: setting horizontal detection sensors at the four corners of the positioning frame 3 to obtain horizontal state data of the positioning frame 3; calculating the difference between the horizontal state data of any two horizontal detection sensors based on the obtained horizontal state data, and judging whether the difference is within the error interval; if the difference exceeds the error interval, adjusting the length of the retractable support leg corresponding to the bottom of the positioning frame 3 until the difference is within the error interval.

[0058] Among them, the level detection sensor is a prior art, and its working principle and specific structure are not described in detail here.

[0059] S2, moving the semi-submersible crane vessel 1 to the conveying position, and performing a pile lifting operation on the pile body 100 on the transport ship 2 by using the first crane 11 and the second crane 12.

[0060] See also Figure 4 and Figure 5 The pile lifting operation includes: connecting the hook of the first crane 11 to the pile lifter 101, and connecting the hook of the second crane 12 to the tail hook 102;

[0061] Afterwards, the hooks of the first crane 11 and the second crane 12 are driven to rise simultaneously, so that the pile body 100 is lifted off the transport ship 2. During the lifting process, the hooks of the two cranes are lifted at the same speed and force to ensure that the pile body 100 can be lifted smoothly. As the pile body 100 rises, the distance between the pile body 100 and the deck of the transport ship 2 is continuously monitored until the distance between the pile body 100 and the deck of the transport ship 2 is greater than the first distance value, and the hooks of the first crane 11 and the second crane 12 stop rising.

[0062] In this embodiment, the first distance value is set to 5m, and the distance of 5m can provide sufficient safety space when the pile body 100 is hoisted, reduce the risk of collision or scratching between the pile body 100 and the transport ship 2, and protect the structural integrity of the pile body 100 and the transport ship 2. In other embodiments, adaptive adjustments can also be made according to actual conditions and needs.

[0063] S3, moving the semi-submersible crane vessel 1 to the construction location, and performing pile erection, pile insertion, pre-pile sinking and re-pile sinking operations on the pile body 100 based on the positioning frame 3.

[0064] See also Figures 6 to 8The pile erection operation includes: driving the hooks of the first crane 11 and the second crane 12 to be lowered simultaneously, and during the lowering process, continuously monitoring the distance between the pile driver 101 and the water surface 200. When the distance between the pile driver 101 and the water surface 200 is less than the second distance value, the hook of the first crane 11 stops lowering to ensure that the pile driver 101 at the top of the pile body 100 remains out of the water, and the hook of the second crane 12 continues to be lowered;

[0065] As the hook of the second crane 12 continues to be lowered, the pile body 100 gradually tilts. During the lowering process, the angle between the axis of the pile body 100 and the water surface 200 is monitored in real time. When the angle enters a preset angle range, such as between 70 degrees and 90 degrees, that is, when the wire rope of the tail hook 102 is loose to a powerless state, the hook of the second crane 12 stops lowering and the tail hook 102 is removed;

[0066] Finally, the hook of the first crane 11 is driven to lift. In the process of lifting, since there is no downward pulling force at the tail of the pile body 100, the pile body 100 gradually changes from an inclined state to a vertical state under the lifting action of the hook of the first crane 11, thereby completing the pile erection operation.

[0067] After the pile erection is completed, the pile insertion operation is carried out.

[0068] See also Fig. 9 The pile insertion operation includes: driving the first crane 11 to move the pile body 100, and through the dynamic positioning system of the semi-submersible crane vessel 1, making the bottom of the pile body 100 face the positioning sleeve 31 of the positioning frame 3; when the bottom of the pile body 100 is completely aligned with the positioning sleeve 31, driving the hook of the first crane 11 to start lowering. In the process of lowering the hook, the lowering speed should be kept stable and uniform to avoid the pile body 100 from tilting or colliding due to excessively fast or uneven lowering speed. Under the action of the lowering of the hook, the pile body 100 gradually passes through the positioning sleeve 31. The positioning sleeve 31 plays a role in guiding and limiting the deviation of the pile body 100, ensuring that the pile body 100 can be inserted into the underwater foundation 300 along a predetermined vertical direction.

[0069] During the process of the pile body 100 passing through the positioning sleeve 31 and being inserted into the underwater foundation 300, the insertion depth and verticality of the pile body 100 are continuously monitored. If it is found that the pile body 100 is tilted or inserted poorly, the lowering speed and strength of the hook of the first crane 11 are adjusted in time, or other auxiliary measures such as vibration and pressurization are taken to ensure that the pile body 100 can be smoothly inserted into the underwater foundation 300 and reach the depth and position accuracy required by the design.

[0070] It is worth noting that in this embodiment, a total of four pile bodies 100 are provided, and the above operations are performed in sequence. After the first pile body 100 is inserted, the above operations are repeated to perform the second pile body 100 insertion process, and so on, until the pre-sinking operation is performed after the four pile bodies 100 are inserted.

[0071] See also Fig.10 and Fig.11 The pre-pile sinking operation includes: releasing the connection between the pile body 100 and the pile driver 101, driving the first crane 11 to lift the pile driver 101 to the semi-submersible crane vessel 1, and releasing the connection between the hook of the first crane 11 and the pile driver 101;

[0072] After that, the hydraulic hammer 4 is connected to the hook of the first crane 11. During the connection process, ensure that the connection part is firm and reliable to withstand the huge force in the subsequent operation. Then, drive the first crane 11 to drive the hydraulic hammer 4 to move slowly. During this process, a laser alignment instrument is used for real-time monitoring and orientation correction to ensure that the hydraulic hammer 4 can face the top of the pile body 100 and reach the best force application position.

[0073] Then, the first crane 11 is driven to lower the hydraulic hammer 4, which gradually approaches the top of the pile body 100 during the descent process and finally contacts the top of the pile body 100. Under the pressure of the hydraulic hammer 4, the pile body 100 sinks into the underwater foundation 300 along its own axis until the distance between the top of the pile body 100 and the water surface 200 is less than the third distance value.

[0074] In this embodiment, the third distance value is set to 1 m. When the distance between the top of the pile body 100 and the water surface 200 is less than 1 m, the pre-pile sinking process ends.

[0075] It is worth noting that the above operations are performed on the four pile bodies 100 in sequence. After the pre-sinking process of the first pile body 100 is completed, the above operations are repeated to perform the pre-sinking process of the second pile body 100, and so on, until the pre-sinking operation of the four pile bodies 100 is completed, and then the re-sinking operation is performed.

[0076] See also Figure 12 to Figure 14 The re-pile sinking operation includes: firstly, driving the hook of the first crane 11 upward to make the hydraulic hammer 4 away from the top of the pile body 100, so as to create space for subsequent operations and prevent interference between equipment; at the same time, connecting the pile driver 5 to the hook of the second crane 12, and installing the pile driver 5 to the top of the pile body 100 through the second crane 12; during installation, it is necessary to ensure that the pile driver 5 is closely fitted and aligned with the top of the pile body 100 to ensure effective transmission of force.

[0077] Afterwards, the first crane 11 is driven to lower the hydraulic hammer 4. When the hydraulic hammer 4 contacts the pile driver 5, the force is transmitted to the pile body 100 through the pile driver 5 under the pressure of the hydraulic hammer 4. Due to the existence of the pile driver 5, the pressure can be more evenly distributed on the top of the pile body 100, thereby reducing the damage to the pile body 100 caused by excessive local pressure. Under the pressure of the hydraulic hammer 4 and the transmission effect of the pile driver 5, the pile body 100 continues to sink into the underwater foundation 300 along its own axis until the pile body 100 sinks to the target position of the underwater foundation 300. This ensures that the pile body 100 can provide sufficient support and stability.

[0078] Similarly, the above operations are performed on the four pile bodies 100 in sequence. After the re-sinking process of the first pile body 100 is completed, the above operations are repeated to perform the re-sinking process of the second pile body 100, and so on. After the re-sinking operation of the four pile bodies 100 is completed, the connection between the pile driver 5 and the pile body 100 is released, and the hooks of the first crane 11 and the second crane 12 are driven to lift up, and the pile driver 5 and the hydraulic hammer 4 are respectively hoisted back to the semi-submersible crane vessel 1.

[0079] After the various operations of the above-mentioned pile driving construction are completed, the next step is to re-measure the elevation of the pile top. First, use a measuring device such as a level or a total station to set a plurality of measuring control points around the pile body 100. The operator accurately measures the elevation of the pile top from these control points and compares the measurement result with the preset elevation. If the difference between the measurement result and the preset elevation exceeds the error threshold, correction is performed by further hammering or filling materials. If the difference between the measurement result and the preset elevation is within the error threshold, it indicates that the pile driving construction is qualified.

[0080] After that, you can proceed with the removal of the guide frame. Fig.15 , first remove the connecting parts between the guide frame and the peripheral fixing device, and then use the lifting ropes on both sides of the guide frame to lift the guide frame through the first crane 11 and the second crane 12. During the lifting process, ensure that the guide frame rises smoothly to avoid collision with the pile body 100 or other structures. The removed guide frame is transported to a designated storage area for subsequent reuse or proper storage.

[0081] Finally, the pile top protective cover is installed. A protective cover that matches the size and shape of the pile body 100 is selected and hoisted to the pile top. The operator securely installs the protective cover on the pile top by bolting, welding or other fixing methods. Ensuring that the protective cover is tightly installed can effectively prevent debris from entering the pile, protect the pile top, and reduce erosion and damage to the top of the pile body 100 by the external environment.

[0082] Embodiment 2

[0083] The embodiment of the present invention also provides a pile sinking construction device, which adopts the pile sinking construction method described in the first embodiment, wherein the parts identical or corresponding to the first embodiment adopt the corresponding figure marks of the first embodiment. Specifically, the pile sinking construction device includes a semi-submersible crane ship 1 and a transport ship 2, wherein the semi-submersible crane ship 1 includes a first crane 11 and a second crane 12 that can operate independently; the semi-submersible crane ship 1 is equipped with a dynamic positioning system for real-time detection and adjustment of its own position. The semi-submersible crane ship 1 is equipped with a first crane 11 and a second crane 12 that can operate independently, making the lifting operation more flexible and accurate. The double cranes can work together to share the weight of the pile body 100, reduce the uneven force of the pile body 100 during the lifting process, reduce the risk of damage to the pile body 100, and also improve the lifting efficiency. The dynamic positioning system has the function of real-time detection and adjustment of its own position, which can enable the semi-submersible crane ship 1 to maintain a stable position during the construction process, and is not affected by factors such as waves and water currents, thereby improving the accuracy and safety of the construction. The cooperation between the transport ship 2 and the semi-submersible crane vessel 1 enables the transportation and construction of the pile body 100 to be closely connected, reduces the waiting time in the intermediate links, and further improves the construction efficiency.

[0084] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pile driving construction method, applied to a pile driving construction device, the pile driving construction device comprising a semi-submersible crane ship (1) and a transport ship (2), the semi-submersible crane ship (1) comprising a first crane (11) and a second crane (12) which can operate independently, a pile body (100) being placed on the transport ship (2), and a pile driver (101) and a tail hook (102) being detachably provided at the head and tail ends of the pile body (100), respectively, wherein: The pile sinking construction method comprises: S1. Installing the positioning frame (3) at the construction location by means of the semi-submersible crane vessel (1); moving the transport vessel (2) to the transport location and anchoring it; S2, moving the semi-submersible crane vessel (1) to the transport position, and performing a pile lifting operation on the pile body (100) on the transport vessel (2) by using the first crane (11) and the second crane (12); S3, moving the semi-submersible crane vessel (1) to the construction location, and performing pile erection, pile insertion, pre-pile sinking and re-pile sinking operations on the pile body (100) based on the positioning frame (3).

2. The pile sinking construction method according to claim 1, characterized in that: In S2, the pile lifting operation includes: Connecting the hook of the first crane (11) to the pile driver (101), and connecting the hook of the second crane (12) to the tail hook (102); The hooks of the first crane (11) and the second crane (12) are driven to rise simultaneously, so that the pile body (100) is lifted away from the transport ship (2), until the distance between the pile body (100) and the deck of the transport ship (2) is greater than a first distance value, and the hooks of the first crane (11) and the second crane (12) stop rising.

3. The pile sinking construction method according to claim 1, characterized in that: In S3, the pile erection operation includes: driving the hooks of the first crane (11) and the second crane (12) to be lowered simultaneously, and when the distance between the pile driver (101) and the water surface (200) is less than a second distance value, the hook of the first crane (11) stops being lowered, and the hook of the second crane (12) continues to be lowered; When the angle between the axis of the pile body (100) and the water surface (200) is within a preset angle range, the hook of the second crane (12) stops lowering and the tail hook (102) is removed; The hook of the first crane (11) is driven to lift upward, so that the pile body (100) is in a vertical state.

4. The pile sinking construction method according to claim 1, characterized in that: In S3, the plugging operation includes: Driving the first crane (11) to drive the pile body (100) to move, so that the bottom of the pile body (100) faces the positioning sleeve (31) of the positioning frame (3); The hook of the first crane (11) is driven downward, so that the pile body (100) passes through the positioning sleeve (31) and is inserted into the underwater foundation (300).

5. The pile sinking construction method according to claim 1, characterized in that: In S3, the pre-pile sinking operation includes: The connection between the pile body (100) and the pile driver (101) is released, and the first crane (11) is driven to lift the pile driver (101) to the semi-submersible crane vessel (1), and the connection between the hook of the first crane (11) and the pile driver (101) is released; A hydraulic hammer (4) is connected to the hook of the first crane (11), and the first crane (11) is driven to drive the hydraulic hammer (4) to move, so that the hydraulic hammer (4) faces the top of the pile body (100); The first crane (11) is driven to lower the hydraulic hammer (4), and under the pressure of the hydraulic hammer (4), the pile body (100) sinks into the underwater foundation (300) along its own axis until the distance between the top of the pile body (100) and the water surface (200) is less than a third distance value.

6. The pile sinking construction method according to claim 5, characterized in that: In S3, the pile re-sinking operation includes: The hook of the first crane (11) is driven upward to move the hydraulic hammer (4) away from the top of the pile body (100); at the same time, a pile driver (5) is connected to the hook of the second crane (12), and the pile driver (5) is installed on the top of the pile body (100) through the second crane (12); The first crane (11) is driven to lower the hydraulic hammer (4); under the pressure of the hydraulic hammer (4) and the conduction of the pile driver (5), the pile body (100) continues to sink into the underwater foundation (300) along its own axis until the pile body (100) sinks to the target position of the underwater foundation (300).

7. The pile sinking construction method according to claim 1, characterized in that: In S1, installing the positioning frame (3) to the construction location by using the semi-submersible crane vessel (1) comprises: A lifting rope is respectively connected to both sides of the positioning frame (3); and the lifting hooks of the first crane (11) and the second crane (12) are respectively connected to one of the lifting ropes; Driving the hooks of the first crane (11) and the second crane (12) to rise simultaneously, so that the positioning frame (3) is lifted away from the semi-submersible crane vessel (1); The positioning frame (3) is moved to above the construction location by the semi-submersible crane vessel (1); and the hooks of the first crane (11) and the second crane (12) are driven to be lowered simultaneously until the positioning frame (3) is installed at the construction location.

8. The pile sinking construction method according to claim 7, characterized in that: After the positioning frame (3) is installed at the construction location, a leveling operation is performed on the positioning frame (3), and the leveling operation includes: Level detection sensors are respectively arranged at the four corners of the positioning frame (3) to obtain horizontal state data of the positioning frame (3); Calculating the difference between the horizontal state data of any two horizontal detection sensors according to the acquired horizontal state data, and determining whether the difference is within an error interval; If the difference exceeds the error range, the length of the telescopic support leg corresponding to the bottom of the positioning frame (3) is adjusted until the difference is within the error range.

9. The pile sinking construction method according to claim 1, characterized in that: The distance between the construction position and the transportation position is greater than or equal to 200 m and less than or equal to 300 m.

10. A pile driving construction device, using the pile driving construction method according to any one of claims 1 to 9, characterized in that: The pile-driving construction device comprises a semi-submersible crane vessel (1) and a transport vessel (2); the semi-submersible crane vessel (1) comprises a first crane (11) and a second crane (12) which can operate independently; the semi-submersible crane vessel (1) is equipped with a dynamic positioning system for real-time detection and adjustment of its own position.

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