A protection device and method for large-scale steel pile overturning

Abstract

This invention provides a protective device and method for turning over large stacked steel piles, belonging to the field of steel pile turning technology. The protective device is installed between the stacked steel pipe piles, with its lower arc surface matching the curvature of the steel pipe pile and in close contact with the lower layer of steel pipe piles via a rubber layer. The upper part of the protective device is in close contact with the upper layer of steel pipe piles, and movement between the device and the pile tip is restricted by a limiting steel pipe. During the turning process, the upper steel pipe pile rotates vertically using the protective device as a fulcrum. The protective device and rubber layer prevent small-area localized contact and friction, avoiding damage to the pile body during the turning process. The device is simple to place, can be reused multiple times, greatly improving construction efficiency and operational safety.

Description

Technical Field

[0001] This invention belongs to the field of steel pile turning technology, specifically relating to a protective device and method for turning large stacked steel piles. Background Technology

[0002] Jacket foundations are a widely used foundation type for offshore wind power in my country. The pipe piles used in jacket foundations are large in diameter and long in length. To ensure the stability of the ship during transportation and construction, large transport ships are often used to transport the steel pipe piles in stacks. Because the steel pipe piles need to pass through the guide tube of the pile stabilization platform as a whole for positioning, and the pile body cannot be equipped with lifting lugs, the steel pipe piles are lifted at a single point without tail slippage. This causes local friction and collision between the tail tip of the upper steel pipe pile and the lower steel pipe pile when the upper steel pipe pile is turned over. If not handled properly when the ship is moving at sea, it can easily cause local damage to the steel pipe piles.

[0003] Traditional protective measures for upper and lower steel pipe piles involve placing protective steel plates or cushioning corks between them. However, this method and structure have the following problems: 1. If the protective steel plate or buffer cork has no fixing device, it is easy to shift under external force or impact, which is difficult to control, resulting in uneven load or inadequate protection.

[0004] 2. In order to ensure that the load is evenly transferred to the lower steel piles and reduce the load on the protective steel plates or corks, a large number of protective steel plates and corks are usually arranged, which consumes loading and unloading time and wastes a lot of materials.

[0005] 3. The steel plates and wooden plugs have fixed shapes and flat surfaces, making it impossible for them to fit snugly against the surface of the steel piles. This results in poor load transfer capacity and weak stability.

[0006] 4. The protective steel plate and cork plug are not strong enough, and the protective effect is not ideal. Local damage to the steel pipe piles still occurs, which affects the construction quality, increases the construction cost of returning to the factory and repairing, and is not conducive to the construction project.

[0007] In order to improve the efficiency of the arrangement of protection measures for upper and lower steel pipe piles, as well as the safety and quality of steel pipe pile transportation and pile turning, there is an urgent need for an improved protection device and protection method for large stacked steel pile turning. Summary of the Invention

[0008] The protective device for turning over large stacked steel piles of this invention is installed between the stacked steel pipe piles. The lower arc surface has the same curvature as the steel pipe pile and is in close contact with the lower steel pipe pile through a rubber layer. The upper part of the protective device is in close contact with the upper steel pipe pile and the movement between the device and the pile tip is restricted by a limiting steel pipe. During the pile turning process, the upper steel pipe pile rotates vertically with the protective device as a fulcrum. The protective device and the rubber layer prevent small-area local contact and friction, avoiding damage to the pile body during the pile turning process. It is simple to place, can be reused multiple times, greatly improves construction efficiency, and also improves operational safety.

[0009] The present invention employs the following technical solution.

[0010] A method for protecting large stacked steel piles from pile flipping includes: Step 1: When stacking steel piles, after the lower layer of steel piles is placed, place the protective device for flipping large stacked steel piles at the tail of the lower layer of steel piles. The arc-shaped steel plate should fit against the arch of the lower layer of steel piles. Then place the tail of the upper layer of steel piles above the two arc-shaped steel plates of the protective device for flipping large stacked steel piles. Step 2: When the steel pile pipe is lifted using the single-head non-tail-slipping hoisting method, the end without the protective device for turning over large stacked steel piles is used as the lifting point.

[0011] Furthermore, if there are multiple layers of stacked steel piles, protective devices for flipping large stacked steel piles can be placed layer by layer and one by one according to the method in step 1.

[0012] Furthermore, in step 2, as the steel pile pipe is lifted one end during the lifting process, the load on the landing end of the upper steel pile pipe increases. The positioning device of the protective device for the large stacked steel pile flipping can prevent the tail of the upper lifted steel pile pipe from slipping.

[0013] A protective device for the overturning of large stacked steel piles includes: Arc-shaped protection device and positioning device; The main structure of the arc-shaped protection device is made of two custom-made arc-shaped steel plates that can be respectively attached to the surface of two adjacent lower steel pile pipes. The lowest lower steel pile pipe is placed on the ground or deck. Two custom-made, curved steel plates that fit the surface of the steel pile pipe are connected using structural steel. A rubber buffer pad is installed on the inner side of the arc-shaped steel plate, which can increase the fit between the protective device for large stacked steel piles and the lower steel pile pipe. The positioning device is made of a seamless steel pipe; during the single-head pile turning operation of the upper steel pile pipe, the seamless steel pipe can position the upper steel pile pipe and limit the radial displacement of the upper steel pile pipe.

[0014] Furthermore, the distance between the two custom-made, curved steel plates that conform to the surface of the steel pile pipe is determined according to the lower steel... The stacking spacing of the pipe piles is determined by the following method: The distance between the two arc-shaped steel plates can be determined by pre-determining the spacing of the transport supports of the lower steel pipe piles of the transport ship, or by measuring the clear distance between the arch tops of two adjacent lower steel pipe piles after the lower steel pipe piles are in place. Two curved steel plates are welded or bolted together using steel connectors. The distance between the two curved steel plates is locked to be equal to or slightly greater than the net distance between the arch tops of the two lower steel pile pipes, ensuring that the two curved steel plates simultaneously fit the arch tops of the two adjacent lower steel pile pipes.

[0015] Furthermore, the net distance between the arch crowns is the horizontal distance between the highest points of the outer arcs of two adjacent lower-level steel pile pipes.

[0016] Furthermore, the arc-shaped steel plate that can be fitted to the surface of the steel pile pipe coincides with the center of the steel pile pipe.

[0017] Furthermore, a seamless steel pipe is welded to one end of the upper part of the arc-shaped steel plate, and the length of the seamless steel pipe is greater than the distance between the adjacent arc-shaped steel plates below.

[0018] Furthermore, the lifting lugs or pull rings are welded to the bottom of the protective device for turning over large stacked steel piles. Lifting lugs or pull rings are symmetrically arranged on the outer side of the curved steel plate or on the steel connecting parts.

[0019] Furthermore, the lifting lugs or pull rings are made of thick steel plates or round steel.

[0020] The beneficial effects of the present invention are as follows: Compared with the prior art, the technical effects of the present invention include: The protective device for flipping large stacked steel piles of this invention has a high degree of fit with the lower layer of steel pipe piles and adds a rubber buffer pad to effectively distribute the load, providing better protection than other temporary protective devices. This protective device has a limiting function to prevent slippage of the upper single pile during single-point lifting, effectively avoiding damage to the steel pipe piles due to impacts during lifting. The device has low processing precision requirements, is simple to manufacture, inexpensive, and uses readily available materials, with a short production period. It can be customized according to the external dimensions and stacking spacing of the steel pipe piles. The device is convenient to use; it is placed on top of the lower layer of steel pipe piles, and can be removed after the upper layer of steel pipe piles is lifted. It can then be reused by installing it at the flipping position of other steel pipe piles, saving total time in stacking and lifting steel pipe piles, as well as material consumption. Attached Figure Description

[0021] Figure 1This is a front view of the protective device for turning over large stacked steel piles as described in this invention; Figure 2 This is a side view of the protective device for turning over large stacked steel piles as described in this invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, any other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0023] The present invention provides a method for protecting large stacked steel piles during pile flipping, comprising: Step 1: When stacking steel piles, after the lower layer of steel piles is placed, place the protective device for flipping large stacked steel piles at the tail of the lower layer of steel piles. The arc-shaped steel plate should fit against the arch of the lower layer of steel piles. Then place the tail of the upper layer of steel piles above the two arc-shaped steel plates of the protective device for flipping large stacked steel piles. In a preferred but non-limiting embodiment of the present invention, if there are multiple layers of stacked steel piles, a protective device for turning over large stacked steel piles can be placed layer by layer according to the method in step 1.

[0024] Step 2: When the steel pile pipe is lifted using the single-head non-tail-slipping hoisting method, the end without the protective device for turning over large stacked steel piles is used as the lifting point.

[0025] In a preferred but non-limiting embodiment of the present invention, in step 2, as the steel pile pipe is lifted one end during the lifting process, the load on the landing end of the upper steel pile pipe increases. Through the support and isolation of the large stacked steel pile turning protection device, the steel pile pipes are prevented from squeezing and rubbing against each other. Furthermore, the positioning device of the large stacked steel pile turning protection device can prevent the tail of the upper lifted steel pile pipe from slipping, ensuring that the tail of the steel pile pipe is always within the range of the protection device.

[0026] like Figures 1 to 2 As shown, the protective device for the overturning of large stacked steel piles according to the present invention includes: Arc-shaped protection device 1 and positioning device; The main structure of the arc-shaped protection device is made of two custom-made arc-shaped steel plates that can be respectively attached to the surface of two adjacent lower steel pile pipes 2. The lowest lower steel pile pipe 2 is placed on the ground or deck 3. Two custom-made, curved steel plates that fit the surface of the steel pile pipe are connected using structural steel. The inner side of the arc-shaped steel plate is equipped with a rubber buffer pad 4, which can increase the fit between the protection device for large stacked steel piles and the lower steel pile pipe 2, strengthen the load transfer and distribution, and avoid the technical defects of hard contact between the steel structure of the arc-shaped steel plate and the lower steel pile pipe 2, which would cause damage to the surface of the steel pile and shorten the service life of the tooling. The positioning device is made of a seamless steel pipe 5. During the single-head pile turning operation of the upper steel pile pipe 6, the seamless steel pipe 5 can position the upper steel pile pipe 6, limit the radial displacement of the upper steel pile pipe 6, and avoid the slippage of the landing end of the upper steel pile pipe 6 during the pile turning process, which would cause damage to the protection device of the large stacked steel pile turning and the upper steel pile pipe 6.

[0027] In a preferred but non-limiting embodiment of the present invention, two custom-made arc-shaped steel pieces conform to the surface of the steel pile pipe. The distance between the plates can be determined based on the stacking spacing of the underlying steel pipe piles, specifically as follows: First, accurately measure the clear distance between the arch tops of two adjacent lower-level steel piles 2 that have already been placed in the lower level, and use this as the reference value for the spacing of the arc-shaped plates; Two curved steel plates are welded or bolted together using steel connectors. The distance between the two curved steel plates is locked to be equal to or slightly greater than the net distance between the arch tops of the two lower steel pile pipes 2, ensuring that the two curved steel plates simultaneously fit the arch tops of the two adjacent lower steel pile pipes without any suspension or deformation of the support.

[0028] The curved steel plate fits perfectly with the curved surface of the lower steel pile pipe, and the rubber buffer layer disperses pressure, eliminates local stress concentration, and prevents hard contact from scratching the pile body. The positioning is reliable, preventing slippage and collisions. The spacing of the curved steel plate precisely matches the pile spacing of the lower steel pile pipe, and together with the positioning steel pipe, it restricts the radial displacement of the upper steel pile pipe. During single-point lifting, there is no tail slippage or collision, protecting the protective device for large stacked steel piles and the steel pile pipes from being squeezed and damaged. It can be customized / fine-tuned according to different pile diameters and stacking spacings. One set of protective device for large stacked steel piles can adapt to multiple specifications of steel pile pipes, significantly improving turnover rate. Installation is quick, improving efficiency. Placement is done in one go without multiple shims, reducing loading, unloading, and adjustment time, and lowering material waste and construction costs. It is reusable, economical, and environmentally friendly. The structure is stable and the stress is reasonable, allowing for multiple cycles of use, replacing traditional cork / steel plate temporary protection, reducing costs and increasing efficiency.

[0029] In a preferred but non-limiting embodiment of the present invention, the net distance between the arch tops is the horizontal distance between the highest points of the outer arcs of two adjacent lower steel pile pipes 2.

[0030] In a preferred but non-limiting embodiment of the present invention, an arc-shaped steel plate that can conform to the surface of the steel pile pipe and the steel The centers of the piles coincide.

[0031] In a preferred but non-limiting embodiment of the present invention, a seamless steel pipe 5 is welded to one end of the upper part of an arc-shaped steel plate, and the length of the seamless steel pipe 5 is greater than the spacing between the adjacent arc-shaped steel plates below.

[0032] Therefore, the length of the seamless steel pipe is greater than the spacing between the adjacent curved steel plates below, which allows for the construction of the upper steel pile pipe. When lifting at a single point and turning piles without tail slippage, the lateral movement of the steel pile tail is completely blocked, preventing the pile tip or body of the upper steel pile pipe from slipping out of the protection range and causing collision damage; ensuring the stability of the support point and preventing the overturning of the protective device for turning large stacked steel piles; the seamless steel pipe forms a rigid retaining edge, ensuring that the upper steel pile pipe always falls within the stress area between the two arc-shaped steel plates, preventing the tooling from being stressed on one side, warping, or tilting due to offset; the load is evenly transmitted, protecting the pile surface of the steel pipe pile, and the limiting effect allows the pressure of the upper steel pipe pile to act vertically on the center of the arc-shaped steel plate, and the rubber buffer pad evenly disperses the load, eliminating local hard contact and stress concentration; improving the safety and success rate of pile turning operations, constraining the pile end position throughout the process, eliminating the need for manual support and repeated adjustments, reducing the risks caused by sea waves and ship swaying, and improving construction efficiency; it has strong adaptability, does not jam or slip, and its length is slightly larger than the spacing between the arc-shaped plates, which can ensure effective limiting without jamming or interfering with the vertical rotation of the steel pile pipe, making the pile turning operation smooth.

[0033] In a preferred but non-limiting embodiment of the present invention, the lifting lug or pull ring 7 is welded to the large stacked steel pile. On the outer side of the lowest arc-shaped steel plate or on the steel connecting piece of the pile turning protection device, the lifting lug or pull ring 7 can be a closed lifting ring or a plate lifting lug, and its hole diameter matches the cable buckle of the cable 8. The lifting lug or pull ring 7 is symmetrically arranged to ensure balanced force.

[0034] In a preferred but non-limiting embodiment of the present invention, the lifting lug or pull ring 7 is made of thick steel plate or round steel and is fully welded to the main body of the protective device for turning over large stacked steel piles to ensure high strength.

[0035] Thus, the lifting lug or pull ring 7, after passing through the cable 8, firmly fixes the protective device to the ground or deck, preventing it from slipping or falling off during sea turbulence or pile overturning impacts; it facilitates the overall lifting, transportation, and turnover of the protective device for large stacked steel piles; and it works in conjunction with the cable fine-tuning tooling position to ensure that the curved steel plate accurately fits the arch of the steel pile pipe.

[0036] The beneficial effects of the present invention are as follows: Compared with the prior art, the technical effects of the present invention include: The protective device for flipping large stacked steel piles of this invention has a high degree of fit with the lower layer of steel pipe piles and adds a rubber buffer pad to effectively distribute the load, providing better protection than other temporary protective devices. This protective device has a limiting function to prevent slippage of the upper single pile during single-point lifting, effectively avoiding damage to the steel pipe piles due to impacts during lifting. The device has low processing precision requirements, is simple to manufacture, inexpensive, and uses readily available materials, with a short production period. It can be customized according to the external dimensions and stacking spacing of the steel pipe piles. The device is convenient to use; it is placed on top of the lower layer of steel pipe piles, and can be removed after the upper layer of steel pipe piles is lifted. It can then be reused by installing it at the flipping position of other steel pipe piles, saving total time in stacking and lifting steel pipe piles, as well as material consumption.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for protecting large stacked steel piles during pile flipping, characterized in that, include: Step 1: When stacking steel piles, after the lower layer of steel piles is placed, place the protective device for flipping large stacked steel piles at the tail of the lower layer of steel piles. The arc-shaped steel plate should fit against the arch of the lower layer of steel piles. Then place the tail of the upper layer of steel piles above the two arc-shaped steel plates of the protective device for flipping large stacked steel piles. Step 2: When the steel pile pipe is lifted using the single-head non-tail-slipping hoisting method, the end without the protective device for turning over large stacked steel piles is used as the lifting point.

2. The protection method for large stacked steel piles under pile flipping according to claim 1, characterized in that, If there are multiple layers of stacked steel piles, protective devices for flipping large stacked steel piles can be placed layer by layer and one by one according to the method in step 1.

3. The protection method for large stacked steel piles under pile flipping according to claim 2, characterized in that, In step 2, as the steel pile pipe is lifted one end during the lifting process, the load on the landing end of the upper steel pile pipe increases. The positioning device of the protective device for the large stacked steel pile flipping can prevent the tail of the upper lifted steel pile pipe from slipping.

4. A protective device for the overturning of large stacked steel piles, characterized in that, include: Arc-shaped protection device and positioning device; The main structure of the arc-shaped protection device is made of two custom-made arc-shaped steel plates that can be respectively attached to the surface of two adjacent lower steel pile pipes. The lowest lower steel pile pipe is placed on the ground or deck. Two custom-made, curved steel plates that fit the surface of the steel pile pipe are connected using structural steel. A rubber buffer pad is installed on the inner side of the arc-shaped steel plate, which can increase the fit between the protective device for large stacked steel piles and the lower steel pile pipe. The positioning device is made of a seamless steel pipe; during the single-head pile turning operation of the upper steel pile pipe, the seamless steel pipe can position the upper steel pile pipe and limit the radial displacement of the upper steel pile pipe.

5. The protective device for turning over large stacked steel piles according to claim 4, characterized in that, Two pieces The distance between the customized curved steel plates that conform to the surface of the steel pipe pile is determined according to the stacking spacing of the lower layer of steel pipe piles. The specific method is as follows: The distance between the two arc-shaped steel plates can be determined by pre-determining the spacing of the transport supports of the lower steel pipe piles of the transport ship, or by measuring the clear distance between the arch tops of two adjacent lower steel pipe piles after the lower steel pipe piles are in place. Two curved steel plates are welded or bolted together using steel connectors. The distance between the two curved steel plates is locked to be equal to or slightly greater than the net distance between the arch tops of the two lower steel pile pipes, ensuring that the two curved steel plates simultaneously fit the arch tops of the two adjacent lower steel pile pipes.

6. The protective device for turning over large stacked steel piles according to claim 5, characterized in that, The clear distance between the arch tops is the horizontal distance between the highest points of the outer arcs of two adjacent lower-level steel pile pipes.

7. The protective device for turning over large stacked steel piles according to claim 6, characterized in that, The arc-shaped steel plate that can fit the surface of the steel pile pipe coincides with the center of the steel pile pipe.

8. The protective device for turning over large stacked steel piles according to claim 7, characterized in that, A seamless steel pipe is welded to one end of the upper part of an arc-shaped steel plate, and the length of the seamless steel pipe is greater than the distance between the adjacent arc-shaped steel plates below.

9. The protective device for turning over large stacked steel piles according to claim 8, characterized in that, Hanging Ears Alternatively, the pull rings can be welded to the outer side of the lowest arc-shaped steel plate or the steel connector of the protective device for turning over large stacked steel piles, with the lifting lugs or pull rings arranged symmetrically.

10. The protective device for turning over large stacked steel piles according to claim 9, characterized in that, The lifting lugs or pull rings are made of thick steel plates or round steel.

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