Pile leg folding positioning structure, sectional pile leg folding method and pile leg folding method

Abstract

The application discloses a pile leg closing positioning structure, a segmented pile leg closing method and a pile leg closing method. The pile leg closing positioning structure comprises an inner plate and an outer support, the outer support is located outside a bolt hole of a pile leg, and the inner plate is inserted into the bolt hole from the inside of the pile leg and connected with the outer support. The segmented pile leg closing method comprises the following steps: a positioning tool is installed at a bolt hole of a segmented pile leg, and the inner plate is inserted into the bolt hole from the inside of the pile leg and connected with the outer support by welding. The segmented pile leg closing method utilizes the characteristic that the segmented pile leg has a bolt hole, designs a closing positioning tool, avoids directly installing a positioning tool on the wall of the pile leg, avoids welding on the wall of the pile leg, and thus the material E690 plate of the pile leg is not damaged. A mobile device is operated, a cylindrical pile leg is moved by a positioning clamp, the height and left and right positions of the segmented pile leg are adjusted, and the pile leg is closed. The dock hoisting time is greatly reduced, the construction difficulty and cost are reduced, and the precision requirement is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ships, and relates to a pile leg closing positioning structure, a segmented pile leg closing method and a pile leg closing method. BACKGROUND

[0002] With the rise of offshore wind power, wind turbines are becoming larger and larger and entering deep water areas. The height and weight of the new generation of wind power installation platform pile legs are increasing, and the sea conditions are becoming more complex, so the traditional wind power installation platform cannot meet the requirements.

[0003] Therefore, a method for accurately and quickly positioning and closing pile legs without increasing the length of the lifting crane boom is needed to meet the installation requirements of the newly designed wind power installation platform pile legs. SUMMARY

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] In a first aspect, a pile leg closing positioning structure includes an inner plate and an outer support, the outer support is located outside the bolt hole of the pile leg, and the inner plate is inserted into the bolt hole from the inside of the pile leg and connected with the outer support.

[0006] The inner plate is an arc-shaped structure matched with the bolt hole of the pile leg, the outer support includes an arc-shaped part and a triangular part extending from the arc-shaped part, the arc of the arc-shaped part is matched with the outer diameter of the pile leg, and the triangular part is a plurality of triangular support plates.

[0007] As a further scheme of the present application, the inner plate is welded with a reinforcing plate.

[0008] As a further scheme of the present application, the bottom of the triangular part is provided with a base plate, and the lower part of the base plate is connected with a base.

[0009] As a further scheme of the present application, the inner plate is provided with a gasket at the connection with the pile leg, and the outer support is provided with a gasket at the connection with the pile leg.

[0010] In a second aspect, a segmented pile leg closing method is provided, which installs a positioning tool at the bolt hole of the segmented pile leg, the positioning tool includes an inner plate, an outer support, a gasket, a reinforcing plate, a base plate and a base, and the specific steps include:

[0011] The inner plate is inserted into the bolt hole from the inside of the pile leg and welded with the outer support, a gasket is installed at the connection of the inner plate with the pile leg, and a gasket is installed at the connection of the outer support with the pile leg.

[0012] The inner plate is welded with the reinforcing plate.

[0013] The outer support bottom is mounted with the base plate, and after the base plate is connected to the rear of the base, the base is placed on the mobile device;

[0014] Adjust the mobile device, and fold the pile legs;

[0015] After the pile legs are folded, the positioning tool is removed.

[0016] As a further scheme of the present application, the pile leg folding precision requirement is that the distance between the inspection lines of the folding opening is 200mm±2mm, and the distance deviation between the two pin hole centers of the folding opening is ±2mm; the center line deviation of the pin hole is ±0.5mm.

[0017] In a third aspect, a pile leg folding method includes the following steps:

[0018] Segment marking: each pile leg is segmented, and a positioning auxiliary line is drawn for each segment; and a general assembly site is arranged;

[0019] Hoisting the pile leg: the segmented pile leg is hoisted by a floating crane and placed on the general assembly site;

[0020] Fold the pile leg: use any one of the segmented pile leg folding methods described above to fold the segmented pile leg until the folding of the plurality of segmented pile legs is completed.

[0021] As a further scheme of the present application, the auxiliary line includes a pin hole center line, a pile leg cross center line after the pin hole center is deflected by 45 degrees, and an upper and lower end 100mm inspection line from the folding opening.

[0022] As a further scheme of the present application, the arrangement of the general assembly site includes: leveling the ground of the general assembly site and laying steel plates; drawing ground lines to arrange a jig frame; laser marking horizontal inspection lines of the jig frame; adjusting the installation position of the saddle plate of the jig frame according to the horizontal inspection lines and welding.

[0023] The present application has the following beneficial effects:

[0024] A pile leg folding positioning structure uses the feature of the segmented pile leg having a pin hole to design a folding positioning tool, avoids directly installing a positioning tool on the pile leg wall, and avoids welding on the pile leg wall, so that the material E690 plate of the pile leg is not damaged. The pile leg folding positioning structure can quickly and conveniently fix the cylindrical segmented pile leg, operate the mobile device, drive the cylindrical pile leg to move through the pile leg folding positioning structure, adjust the height and left and right of the segmented pile leg, and quickly and accurately fold the pile leg.

[0025] A segmented pile leg closing method uses the characteristic of segmented pile leg with a latch hole to design a closing positioning tool, avoids directly installing a positioning tooling on the pile leg wall, avoids welding on the pile leg wall, so as to not damage the material E690 plate of the pile leg. The inner plate installs a reinforcing plate to increase the strength of the positioning tool, improve the stability of the positioning tool. The installation of the gusset plate prevents damage to the pile leg wall. The outer support installs the floor for connecting the base, and the base is set to facilitate the configuration of the mobile device. The mobile device is operated, the positioning clamp drives the cylindrical pile leg to move, adjusts the height and left and right of the segmented pile leg, and closes the pile leg. After the pile leg is closed, the positioning tool is removed.

[0026] A segmented pile leg closing method divides the super large and super heavy pile leg into segments first, and then uses the segmented pile leg closing method to sequentially close the segmented pile leg. This greatly reduces the dock hoisting time, reduces the construction difficulty and cost, ensures the precision requirement, and improves the economic efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a part of the pile leg closing positioning structure of the present application.

[0028] Figure 2 is another part of the pile leg closing positioning structure of the present application.

[0029] Figure 3 is an assembly diagram of the pile leg closing positioning structure of the present application. Figure 1 ;

[0030] Figure 4 is an assembly diagram of the pile leg closing positioning structure of the present application. Figure 2 ;

[0031] Figure 5 is a schematic view of A-A section. Figure 4

[0032] Figure 6 is a part of the schematic view of the enlarged view. Figure 5

[0033] Figure 7 is a schematic view of the pile leg closing precision.

[0034] Figure 8 is a schematic view of the positioning auxiliary line.

[0035] Figure 9 is a schematic view of the layout of the total assembly site.

[0036] Figure 10 is a schematic view of the positioning auxiliary line.

[0037] Figure 11 is a schematic view of the hoisting pile leg.

[0038] Figure 12 is​​Figure 11 B-B cross section schematic view.

[0039] As shown in the figure: 1-pile leg, 10-bolt hole, 11-positioning tool, 12-moving device, 2-inner plate, 3-outer support, 31-arc part, 32-triangle part, 4-stiffener, 5-base plate, 6-base, 7-pad plate;

[0040] 801-converging opening inspection line spacing, 802-converging opening two bolt hole spacing;

[0041] 901-bolt hole center line, 902-bolt hole center deflection 45 degree pile leg cross center line, 903-100mm inspection line from upper and lower ends to converging opening, 904-cradle, 905-cradle horizontal inspection line, 906-pier, 907-sectioned pile leg. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. It should be understood that the present application is not limited by the example embodiments disclosed herein. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0043] A pile leg converging positioning structure, as shown in Figures 1-2 , comprising: an inner plate 2 and an outer support 3, the outer support 3 being located outside the bolt hole 10 of the pile leg 1; the inner plate 2 being inserted from the inside of the pile leg 1 into the bolt hole 10 and connected with the outer support 3.

[0044] The inner plate 2 is an arc-shaped structure matching the bolt hole 10 of the pile leg 1; the outer support 3 comprises an arc part 31 and a triangle part 32 extending from the arc part 31, the arc of the arc part 31 matching the outer diameter of the pile leg 1, and the triangle part 32 being a plurality of triangular support plates. The inner plate 2 is welded with a stiffener 4. The bottom of the triangle part 32 is provided with a base plate 5, and the lower part of the base plate 5 is connected with a base 6. The inner plate 2 is provided with a pad plate 7 at the connection with the pile leg 1, and the outer support 3 is provided with a pad plate 7 at the connection with the pile leg 1.

[0045] A pile leg closing positioning structure uses the feature of the segmented pile leg 907 having a bolt hole 10 to design a closing positioning tool, avoiding direct installation of a positioning tool on the pile leg wall and welding on the pile leg wall, so as not to damage the E690 plate of the pile leg 1. The inner plate 2 is installed with a reinforcing plate 4 to increase the strength of the positioning tool 11 and improve the stability of the positioning tool 11. The gusset plate 7 is installed to prevent damage to the pile leg wall. The outer support 3 is installed with a floor plate for connecting the base 6, and the base 6 is arranged to facilitate the configuration of the mobile device 12. The base 6 is cylindrical and cooperates with the tooling of the mobile device 12 for connection. After the two segmented pile legs are closed, the pile leg closing positioning structure is removed.

[0046] The pile leg closing positioning structure of the present application can quickly and conveniently fix the cylindrical segmented pile leg 907, operate the mobile device 12, and move the cylindrical pile leg 1 through the pile leg closing positioning structure to adjust the height and left and right of the segmented pile leg 907, so as to quickly and accurately close the two segmented pile legs.

[0047] Embodiment 2

[0048] A segmented pile leg closing method, as shown in Figures 1-6 and 12, a positioning tool 11 is installed at the bolt hole 10 of the segmented pile leg 907, and the positioning tool 11 includes an inner plate 2, an outer support 3, a gusset plate 7, a reinforcing plate 4, a base plate 5, and a base 6. The positioning tool 11 is composed of the above-mentioned pile leg closing positioning structure. The specific steps include:

[0049] S301: as shown in Figure 4 , the inner plate 2 is inserted into the bolt hole 10 from the inside of the pile leg 1, and the outer support 3 is welded and connected, the gusset plate 7 is installed at the connection between the inner plate 2 and the pile leg 1, and the gusset plate 7 is installed at the connection between the outer support 3 and the pile leg 1;

[0050] S302: as shown in Figure 5 , the inner plate 2 is welded with the reinforcing plate 4;

[0051] S303: as shown in Figure 12 , the outer support 3 is installed with a base plate 5 at the bottom, and after the base plate 5 is connected with a base 6 at the lower part, it is placed on a mobile device 12;

[0052] S304: adjust the mobile device 12 to close the segmented pile leg 907;

[0053] S305: after the pile leg 1 is closed, the positioning tool 11 is removed.

[0054] Specifically, by using the feature of the segmented pile leg 907 having the bolt hole 10, a folding positioning tool is designed to avoid direct installation of the positioning tool on the pile leg wall, to avoid welding on the pile leg wall, so as to not damage the material E690 plate of the pile leg 1. The inner plate 2 is installed with the reinforcing plate 4 to increase the strength of the positioning tool 11 and improve the stability of the positioning tool 11. The gusset plate 7 is installed to prevent damage to the pile leg wall. The outer support 3 is installed with the floor for connecting the base 6, and the base 6 is arranged to facilitate the configuration of the mobile device 12. The mobile device 12 is operated to move the cylindrical pile leg 1 by the positioning tool 11, to adjust the height and left and right of the segmented pile leg 907, and to fold the pile legs. After the pile legs are folded, the positioning tool 11 is removed.

[0055] In the embodiment, as shown in Figure 7 The pile leg folding precision requirement is that the distance between the two inspection lines of the folding opening is 200 mm ± 2 mm, the distance between the two bolt holes of the folding opening is 2000 mm ± 2 mm, the straightness of the pile leg 1 is that the deflection of any 19.5-meter segment is less than 5 mm, and the center line deviation of the bolt hole is ± 0.5 mm.

[0056] Specifically, the four bolt holes 10 of the pile leg 1 are connected by a tight steel wire, and the straightness of the outer wall of the pile leg 1 is measured every 1 meter, and each measurement point is marked for easy comparison and inspection of multiple measurement data in the future.

[0057] As shown in Figure 7 The distance between the two inspection lines of the folding opening is 200 mm ± 2 mm, the distance between the two bolt holes of the folding opening is 2000 mm ± 2 mm, the straightness of the pile leg 1 is that the deflection of any 19.5-meter segment is less than 5 mm, and the center line deviation of the bolt hole is ± 0.5 mm.

[0058] Specifically, the positioning tool 11 for folding the pile leg can be removed and reused. The tooling material is not wasted.

[0059] Embodiment 3

[0060] A new design of a wind power installation platform pile leg 1 is used to illustrate the pile leg folding method. The wind power installation platform has four cylindrical pile legs 1, the diameter of the pile leg 1 is Φ4.8m, the total height of a single pile leg 1 is 105.38m, the pile leg wall thickness is 98mm, the material is E690, the length of the pile leg 1 is 105m, the maximum working draft is 65m, the maximum lifting capacity of a single pile is 5600 tons, and the maximum hoisting capacity is 800 tons when the maximum span is 36m.

[0061] A segmented pile leg folding method, the detailed steps are:

[0062] S1: Segment marking: each pile leg 1 is segmented, and a positioning auxiliary line is drawn for each segment; the total assembly site is arranged;

[0063] Specifically, each leg 1 is divided into five segments for prefabrication, namely B01, B02, B03, B04 and B05.

[0064] After the prefabrication of the segments, auxiliary lines are drawn, as shown in the figure, including the center line 901 of the segment pinhole, the cross center line 902 of the leg after the center of the pinhole is deflected by 45 degrees, and the 100mm inspection line 903 of the upper and lower end clutch opening. All the marked points are punched on the outer wall of the leg 1. The auxiliary lines help subsequent measurement of the precision of the leg 1. Figure 8

[0065] The total assembly site is arranged, as shown in the figure, including leveling the ground of the total assembly site and laying steel plates; arranging the jig frame 904 by drawing ground lines; adjusting the installation position of the saddle plate of the jig frame according to the horizontal inspection line 905 and welding. Figure 9

[0066] In the subsequent steps, the segmented legs 907 are transported to the wharf 906 for total assembly into three total segments, which are hoisted in the floating state by a floating crane. B01 and B02 form the ZT01 segment, and B03 and B04 form the ZT02 segment.

[0067] S2: Hoisting the leg 1: the segmented legs 907 are hoisted by a floating crane and placed on the total assembly site.

[0068] Specifically, two segmented legs 907 are hoisted onto the jig frame by a 600T floating crane, with one of them as the reference segment. The hoisting is shown in the figure. Figure 10

[0069] S3: Assembling the leg 1: the segmented legs are assembled by the above-mentioned S301-S305 segmented leg assembly method until the assembly of the multiple segmented legs 907 is completed.

[0070] Specifically, as shown in the figure, each segmented leg 907 is provided with two positioning tools 11 on each side, a total of four positioning tools 11. B01 and B02 are assembled into the ZT01 segment, B03 and B04 are assembled into the ZT02 segment, and then the ZT01 segment, the ZT02 segment and the B05 segment are assembled. Figure 11

[0071] A segmented leg assembly method, in which the oversized and overweight leg 1 is first segmented, and then the segmented legs 907 are sequentially assembled by the above-mentioned segmented leg assembly method. This greatly reduces the time of dock hoisting, reduces the construction difficulty and cost, ensures the precision requirement, and improves the economic efficiency.

[0072] ​​​​In the description of the application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0073] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0074] In the embodiments of the application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0075] It should also be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitation, the element defined by the sentence "including a..." does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0076] The above description of disclosed embodiments enables one of ordinary skill in the art to make and use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A structure for closing and positioning a leg of a pile, characterized in that Comprise: An inner plate and an outer support, the outer support is located outside the pin hole of the pile leg; the inner plate is inserted into the pin hole from the inside of the pile leg and connected with the outer support; The inner plate is an arc structure matched with the pin hole of the pile leg; the outer support comprises an arc part and a triangular part extended from the arc part, the arc of the arc part is matched with the outer diameter of the pile leg, and the triangular part is a plurality of triangular support plates; The inner plate is welded with a reinforcing plate; the bottom of the triangular part is provided with a base plate, and the lower part of the base plate is connected with a base; 2. A method of closing a segmented leg, comprising: The positioning tool is installed at the pin hole of the segmented pile leg, and the positioning tool comprises an inner plate, an outer support, a gasket, a reinforcing plate, a base plate and a base; the specific steps comprise: The inner plate is inserted into the pin hole from the inside of the pile leg and welded with the outer support, and the gasket is installed at the connection between the inner plate and the pile leg and at the connection between the outer support and the pile leg; The inner plate is welded with the reinforcing plate; The base plate is installed at the bottom of the outer support, and after the base is connected at the lower part of the base plate, the positioning tool is placed on the mobile device; The mobile device is adjusted, and the pile legs are closed; After the pile legs are closed, the positioning tool is removed.

3. The method of claim 2, wherein, The precision requirement for closing the pile legs is that the distance between the inspection lines of the closed opening is 200mm±2mm, and the distance deviation between the two pin holes of the closed opening is ±2mm; the center line deviation of the pin hole is ±0.5mm.

4. A method of closing a spud leg, the method comprising the steps of Comprise: Segmented marking: each pile leg is segmented, and a positioning auxiliary line is drawn for each segment; Arranging the general assembly site; The arranging of the general assembly site comprises: leveling the ground of the general assembly site and laying steel plates; drawing ground lines to arrange the tire frame; laser shooting the horizontal inspection lines of the tire frame; adjusting the installation position of the saddle plate of the tire frame according to the horizontal inspection lines and welding; Hoisting the pile leg: using a floating crane to hoist the segmented pile leg and place it on the general assembly site; Closing the pile leg: using the segmented pile leg closing method of any one of claims 2-3 to close the segmented pile leg until the closing of the plurality of segmented pile legs is completed.

5. The method of closing down a spud leg according to claim 4 wherein, The auxiliary line comprises the center line of the pin hole, the pile cross center line after the center line of the pin hole is deflected by 45 degrees, and the upper and lower end 100mm inspection lines away from the closed opening.

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