CN112663583B - Construction method for total assembly and closure of pile stabilizing platform - Google Patents
Construction method for total assembly and closure of pile stabilizing platform Download PDFInfo
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- CN112663583B CN112663583B CN202011416016.2A CN202011416016A CN112663583B CN 112663583 B CN112663583 B CN 112663583B CN 202011416016 A CN202011416016 A CN 202011416016A CN 112663583 B CN112663583 B CN 112663583B
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Abstract
The invention discloses a construction method for total assembly and closure of a pile stabilizing platform, which comprises the following procedures: in a first process, a large component is manufactured, the large component including: the pile gripper comprises a pile gripper upper platform, a pile gripper lower platform, a support upright post and a support diagonal brace between the pile gripper upper platform and the pile gripper lower platform, a jacket left piece, a jacket right piece, a connecting pipe between the jacket left piece and the jacket right piece, an anti-sinking plate left piece and an anti-sinking plate right piece; arranging lifting lugs on the large component; thirdly, folding the upper platform and the lower platform of the pile gripper; manufacturing a pair of cantilever beam inverted T-shaped saddles for supporting the pile grippers; arranging a saddle on the overall assembly platform; sixthly, horizontally positioning the jacket; seventhly, folding the pile gripper and the jacket; eighthly, folding the left and right pieces of the anti-sinking plate and folding the anti-sinking plate and the jacket; and a ninth process, checking the whole size of the pile stabilizing platform, and checking the installation integrity of the rest auxiliary components. The construction method of the invention greatly reduces the limit of the height of the product to the lifting capacity of the site.
Description
Technical Field
The invention relates to a construction method for total assembly and closure of a pile stabilizing platform.
Background
At present, the installation of a plurality of large and ultra-large equipment generally follows the original design form of products, especially the ultra-high equipment such as a pile stabilizing platform has extremely high requirements on the assembly site of a manufacturing unit and related hoisting equipment, so that the assembly scheme needs to be established according to time and place.
The pile stabilizing platform is pile sinking auxiliary equipment which is specially constructed for offshore wind turbine foundation construction and installation engineering, the height of a main body of the pile stabilizing platform is 62 meters, the length of the pile stabilizing platform is 30 meters, the width of the pile stabilizing platform is 32 meters, the length of a positioning pile is 90 meters, the self weight of a steel structure reaches 1700 tons, the pile stabilizing platform has the function of automatically opening and closing a holding arm, the diameter of the holding pile is 6.5-10 meters, and the pile stabilizing platform is suitable for construction in deep sea areas with water of 30-40 meters. The existing pile stabilizing platform generally adopts a superposition assembly method during total assembly and then completes the assembly of all parts through a large amount of overhead scaffold operation. The construction method is low in efficiency, increases the high-altitude operation risk during installation, has high requirements on lifting equipment in a field, and is not suitable for construction of higher and larger stable pile platforms.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a construction method for total assembly and closure of a pile stabilizing platform, which can construct larger pile stabilizing platform equipment in limited construction resources and greatly reduce the limitation of the height of a product on the lifting capacity of a site.
The purpose of the invention is realized as follows: a construction method for total assembly and closure of a pile stabilizing platform adopts a horizontal total assembly and comprises the following procedures:
a first process for manufacturing a large component, the large component comprising: pile gripper upper mounting plate, pile gripper lower mounting plate, support post and support bracing between pile gripper upper and lower mounting plate, jacket left side piece, jacket right side piece, the connecting pipe between jacket left and right piece, prevent sinking the board left side piece and prevent sinking the board right side piece.
And a second process, namely arranging lifting lugs on the large component, and comprising the following steps:
arranging a pair of upper platform main lifting lugs and a pair of upper platform auxiliary lifting lugs on an upper platform of a pile gripper; the pair of upper platform main lifting lugs are arranged at the tail part of the upper platform of the pile gripper; the pair of upper platform auxiliary lifting lugs are arranged on the pile embracing side of the upper platform of the pile embracing device;
step two, arranging a pair of lower platform main lifting lugs and a pair of lower platform auxiliary lifting lugs on a lower platform of the pile embracing device, wherein the pair of lower platform main lifting lugs are arranged on the pile embracing side of the lower platform of the pile embracing device; the pair of lower platform auxiliary lifting lugs are arranged at the tail of the lower platform of the pile gripper;
thirdly, respectively arranging a reverse transportation lifting lug on the outer side of the pile embracing side pile hole of the left piece of the anti-sinking plate, the outer side of the tail pile hole of the left piece of the anti-sinking plate, the outer side of the pile embracing side pile hole of the right piece of the anti-sinking plate and the outer side of the tail pile hole of the right piece of the anti-sinking plate; respectively arranging a hoisting lifting lug on the inner side of the pile-embracing side pile hole of the left piece of the anti-sinking plate and the inner side of the pile-embracing side pile hole of the right piece of the anti-sinking plate; and the inner sides of the tail pile hole of the left anti-sinking plate and the right anti-sinking plate are respectively provided with a straightening lifting lug.
And thirdly, folding the upper platform and the lower platform of the pile gripper, adopting normal folding and comprising the following steps:
firstly, transferring a lower platform of a pile gripper to the lower part of a gantry crane; hoisting the lower platform of the pile gripper to a horizontal jig frame from a transfer trolley by using a gantry crane, and carrying out leveling inspection;
step two, respectively installing four support stand columns between an upper platform and a lower platform of the pile gripper on the lower platform of the pile gripper, welding bottom openings of the four support stand columns with the lower platform of the pile gripper according to drawing requirements after adjustment is completed, and then building a scaffold at the positions of the upper openings of the four support stand columns, wherein the height of the scaffold is 3-4 meters downwards from the upper plane of the support stand columns;
hoisting the pile gripper upper platform to the upper ends of the four supporting stand columns from the transfer trolley by using a gantry crane, adjusting the positioning size, then performing positioning welding, requiring an inspector to check the verticality of the four supporting stand columns and the levelness of the pile gripper upper platform, and welding only after meeting the drawing requirements, and meanwhile, building a scaffold at the position of a supporting diagonal brace between the pile gripper upper platform and the pile gripper lower platform;
step four, mounting the support inclined strut according to the requirements of a drawing;
and fifthly, mounting the auxiliary members on the pile gripper to form the integral pile gripper.
And fourthly, manufacturing a pair of cantilever beam inverted T-shaped saddles used for supporting the pile embracing device.
Arranging a saddle on the overall assembly platform; taking the total length of the whole pile stabilizing platform after lying down as the length of a total assembly platform, taking the distance between two pile pipes at the tail part of a jacket as the width of the total assembly platform, taking the installation position of an anti-sinking plate as a reference line, arranging a pair of first conventional saddles at a position 9.7m away from the reference line, arranging a pair of second conventional saddles at a position 10m away from the first conventional saddles, arranging a pair of third conventional saddles at a position 24m away from the second conventional saddles, and finally arranging a pair of cantilever beam inverted T-shaped saddles at a position 12m away from the third conventional saddles; a pair of first conventional saddles, a pair of second conventional saddles and a pair of third conventional saddles are all located below the jacket, and a pair of cantilever inverted-T saddles are located below the support column between the upper and lower platforms of the pile gripper.
Sixthly, horizontally positioning the jacket; the left and right pieces of the jacket are transferred to the lower part of a gantry crane, the left and right pieces of the jacket are firstly hoisted to three pairs of conventional saddles of the total assembly platform by using flexible hanging strips, then two wind ropes are respectively arranged on the two sides of the left and right pieces of the jacket, the distance between the two wind ropes is 30m, and the bottoms of the two wind ropes are both connected to a cement pier; then, building scaffolds in the operation area of the jacket, namely building the scaffolds at the butt joint part of the front end of the jacket and the anti-sinking plate, the butt joint part of the rear end of the jacket and the pile clip, the upper plane part of the jacket and the lower plane part of the jacket respectively; and after the scaffold is built, mounting the connecting pipes on the upper plane of the jacket and the lower plane of the jacket to form the integral jacket.
Seventhly, folding the pile gripper and the jacket, wherein the folding process comprises the following steps;
firstly, hanging two upper platform main lifting lugs on an upper platform of a pile gripper on lifting hooks of a lower trolley of a gantry crane simultaneously, hanging two upper platform auxiliary lifting lugs on the upper platform of the pile gripper on two lifting hooks of an upper trolley of the gantry crane respectively,
step two, after the pile gripper is lifted slowly to a certain height, two lifting hooks of the upper trolley rise, the lifting hook of the lower trolley descends, and the hook is loosened completely when the lifting hook of the lower trolley is not stressed; then, two upper platform main lifting lugs at the tail part of an upper platform of the pile gripper are separated from a connecting shaft of a hoisting steel wire rope of a lower trolley by a climbing vehicle, the lower trolley of the gantry crane is moved to the upper part of the pile gripping side of a lower platform of the pile gripper, the hoisting steel wire rope of the lower trolley of the gantry crane is connected to the two lower platform main lifting lugs on the lower platform of the pile gripper by the climbing vehicle, a lifting hook of the lower trolley is slowly lifted until the upper platform and the lower platform of the pile gripper are basically vertical, and the whole pile gripper is turned over for 90 degrees;
and step three, moving the pile embracing device to the interface of the jacket, finely adjusting the size of the interface of the pile embracing device, and then placing the back seat on a pair of cantilever beam inverted T-shaped saddles of the total assembly platform, wherein a lifting hook of a lower trolley of the gantry crane is not loosened to perform positioning welding of the pile embracing device and the jacket, and four interfaces between the pile embracing device and the jacket are all full penetration welding.
Eighthly, folding the left and right pieces of the anti-sinking plate and folding the anti-sinking plate and the jacket; the method comprises the following steps:
firstly, transferring left and right pieces of an anti-sinking plate to a horizontal jig frame below a gantry crane; placing the left anti-sinking plate on the horizontal jig frame, and then lifting the right anti-sinking plate and the left anti-sinking plate to be folded to form an integral anti-sinking plate; the interface positions of the left and right pieces of the anti-sinking plate require full penetration welding and UT detection is carried out;
step two, hanging two straightening lifting lugs at the tail part of the anti-sinking plate on lifting hooks of a lower trolley of the gantry crane simultaneously, hanging two lifting lugs at the pile holding side of the integral anti-sinking plate on two lifting hooks of an upper trolley of the gantry crane respectively, slowly lifting to a certain height, then lifting the two lifting hooks of the upper trolley, descending the lifting hooks of the lower trolley, and completely releasing the hooks when the lifting hooks of the lower trolley are not stressed so as to enable the anti-sinking plate to be upright;
and thirdly, moving the vertical anti-sink plate to the interface of the jacket, finely adjusting the size of the interface, performing positioning welding on the anti-sink plate and the jacket without loosening an upper trolley lifting hook of the gantry crane, performing full penetration welding on four interfaces between the anti-sink plate and the jacket, and performing UT detection.
And a ninth process, checking the whole size of the pile stabilizing platform, and checking the installation integrity of the rest auxiliary components.
According to the construction method for the total assembling and folding of the pile stabilizing platform, all large components are transferred to a sand washing paint room for coating after being manufactured.
The construction method of the total assembly and closure of the pile stabilizing platform is characterized in that the cantilever beam inverted T-shaped saddle comprises an upright post, a cantilever beam and an inclined supporting beam; the upright post is a hollow quadrangular prism with a rectangular section formed by welding steel plates, reinforcing webs are arranged at intervals in the upright post, the top surface of the upright post is propped against the bottom surface of the supporting upright post through a top cushion plate, and two first toggle plates are respectively connected between the upper parts of two side surfaces of the upright post and the bottom surface of the supporting upright post; the cantilever beam is also welded into a hollow quadrangular prism with a rectangular cross section by a steel plate and is connected to one side of the upright post, the length of the cross section of the cantilever beam is the same as the width of the cross section of the upright post, and two second toggle plates are connected between the bottom surface of the cantilever beam and the side surface of the upright post; the inclined strut beam is also welded into a hollow quadrangular prism with a rectangular cross section by steel plates and is connected between the external top surface of the cantilever beam and the outer side surface of the supporting upright post, the length of the cross section of the inclined strut beam is the same as that of the cross section of the cantilever beam, and two third toggle plates are connected between the top surface of the inclined strut beam and the top surface of the cantilever beam.
The construction method for the total assembly and closure of the pile-stabilizing platform has the following characteristics: the horizontal type general assembly and closure process is adopted, larger pile stabilizing platform equipment is built in limited building resources, the limitation of the height of a product on the lifting capacity of a site is greatly reduced, multi-structure cross operation is realized, the position and time of high-altitude operation are reduced, the operation risk of general assembly and closure and the operation time of an operator are reduced, the production period of the pile stabilizing platform is shortened, the building efficiency is improved, the structure precision is effectively improved, the quality of the pile stabilizing platform is fully ensured, all indexes of the product meet the design requirements, and powerful support is provided for completing wind power pile driving construction more quickly and better.
Drawings
FIG. 1 is a schematic structural view of a construction method of the present invention after completing step one of flow two;
FIG. 2 is a schematic structural diagram of the second step of the second flow of the construction method of the present invention;
FIG. 3 is a schematic structural view of the construction method of the present invention after completing step three of flow two;
FIG. 4a is a schematic structural view of the construction method of the present invention after completing step one of flow three;
FIG. 4b is a schematic structural view of the construction method of the present invention after completing step two of flow three;
FIG. 4c is a schematic structural view of the construction method of the present invention after completing step three of flow three;
FIG. 4d is a schematic structural view of the construction method of the present invention after completing step four of flow three;
FIG. 5a is a schematic view of the construction method of the present invention using a cantilever inverted T saddle;
FIG. 5b is a side view of FIG. 5 a;
FIG. 5c is a top view of FIG. 5 a;
FIG. 6 is a schematic structural view of the construction method of the present invention after completion of flow five;
FIG. 7a is a schematic structural view of the construction method of the present invention after completing flow six;
FIG. 7b is a side view of FIG. 7 a;
FIG. 8a is a schematic diagram of the construction method of the present invention after completing step one of flow seven;
FIG. 8b is a state diagram of the construction method of the present invention as it proceeds through step two of flow seven;
FIG. 8c is a side view of FIG. 8 b;
FIG. 8d is a schematic structural view of the construction method of the present invention after completing step two of flow seven;
FIG. 8e is a state diagram of the construction method of the present invention as it proceeds through step three of flow seven;
FIG. 9a is a state diagram of a method of construction of the present invention following step one of flow eight;
FIG. 9b is a state diagram of the construction method of the present invention as it proceeds through step two of flow eight;
fig. 10 is a state diagram of the construction method of the present invention in the third step of the flow eight.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 10, the method for constructing the total assembly and closure of the pile stabilizing platform of the present invention relates to a pile stabilizing platform including three major components, namely, a pile clip 1, a jacket 2 and a sinking prevention plate 3. The pile gripper comprises a pile gripper upper platform 11, a pile gripper lower platform 12, a support upright 13 and a support inclined strut 14, wherein the support upright 13 and the support inclined strut are connected between the pile gripper upper platform 11 and the pile gripper lower platform 12; the jacket 2 comprises a left jacket sheet 21, a right jacket sheet 22 and a connecting pipe 23 connected between the left and right jacket sheets; the anti-sink plate 3 includes an anti-sink plate left piece 31 and an anti-sink plate right piece 32.
The invention relates to a construction method for assembling and folding a stable pile platform, which adopts a horizontal assembling and comprises the following procedures:
in a first process, a large component is manufactured, the large component including: the pile gripper comprises a pile gripper upper platform 11, a pile gripper lower platform 12, a support upright post 13 and a support diagonal strut 14 between the pile gripper upper platform and the pile gripper lower platform, a jacket left piece 21, a jacket right piece 22, a connecting pipe 23 between the jacket left piece and the jacket right piece, an anti-sinking plate left piece 31 and an anti-sinking plate right piece 32; all large components are transported to a sand washing paint room for coating after being manufactured in a workshop.
And a second process, namely arranging lifting lugs on the large component, and comprising the following steps:
step one, arranging a pair of 85T upper platform main lifting lugs 15 and a pair of 45T upper platform auxiliary lifting lugs 16 on an upper platform 11 of a pile gripper; a pair of upper platform main lifting lugs 15 are welded at the tail of the upper platform 11 of the pile gripper, and the distance between the upper platform main lifting lugs is 11790 mm; a pair of upper platform auxiliary lifting lugs 16 are welded on the pile embracing side of the pile embracing device upper platform 11, and the distance between the upper platform auxiliary lifting lugs is 10000mm (shown in figure 1); the pair of upper platform main lifting lugs 15 and the pair of upper platform auxiliary lifting lugs 16 are both reinforced by inner and outer wing plates, and carbon planing grooves are formed in web plate areas corresponding to the lifting lugs;
step two, arranging a pair of 85T lower platform main lifting lugs 17 and a pair of 45T lower platform auxiliary lifting lugs 18 on the lower platform 12 of the pile gripper; the pair of lower platform main lifting lugs 17 are welded on the pile embracing side of the pile embracing device lower platform 12, and the distance between the pair of lower platform main lifting lugs is 16000 mm; a pair of lower platform auxiliary lifting lugs 18 are welded at the tail part of the lower platform 12 of the pile gripper, and the distance between the lower platform auxiliary lifting lugs is 10000mm (see figure 2);
step three, respectively welding a 20T transportation lifting lug 33 on the outer side of the pile embracing side pile hole of the anti-sinking plate left piece 31, the outer side of the tail pile hole of the anti-sinking plate left piece 31, the outer side of the pile embracing side pile hole of the anti-sinking plate right piece 32 and the outer side of the tail pile hole of the anti-sinking plate right piece 32; welding a 70T hoisting lug 34 on the inner side of the pile-embracing side pile hole of the left anti-sinking plate piece 31 and the inner side of the pile-embracing side pile hole of the right anti-sinking plate piece 32 respectively; respectively welding a 35T straightening lifting lug 35 (see figure 3) on the inner side of the tail pile hole of the left anti-sinking plate piece 31 and the inner side of the tail pile hole of the right anti-sinking plate piece 32;
and a third process, folding the upper platform of the pile gripper and the lower platform of the pile gripper, adopting normal folding and comprising the following steps:
firstly, transferring a lower platform 12 of a pile gripper to the lower part of a 1000T gantry crane from a sand washing paint room; hoisting the lower platform 12 of the pile gripper from the transfer trolley to a horizontal jig frame by using a gantry crane, and carrying out leveling inspection (see fig. 4 a);
step two, respectively installing four support columns 13 between an upper platform and a lower platform of the pile gripper on a lower platform 12 of the pile gripper, welding bottom openings of the four support columns 13 with the lower platform 12 of the pile gripper according to drawing requirements after adjustment is completed, then building a scaffold 10A at the positions of the upper openings of the four support columns 13, wherein the height of the scaffold 10A is 3-4 meters downwards from the upper plane of the support columns 13 (see fig. 4 b);
step three, hoisting the pile gripper upper platform 11 to the upper ends of the four supporting stand columns 13 from the transfer trolley by using a gantry crane, adjusting the positioning size, then performing positioning welding, requiring an inspector to check the verticality of the four supporting stand columns 13 and the levelness of the pile gripper upper platform 11, welding only after meeting the drawing requirements, and meanwhile, building a scaffold 10B (see fig. 4 c) at the position of a supporting inclined strut 14 between the pile gripper upper platform and the pile gripper lower platform;
step four, mounting the supporting inclined strut 14 according to the requirements of the drawing (see fig. 4 d);
installing an auxiliary component on the pile gripper to form an integral pile gripper 1;
the fourth process, the arrangement of the saddle of the general assembly platform during the general folding is considered in advance during the structure manufacturing, which is between the actual situation of the wharf, and the arrangement of the saddle is in accordance with the shipping condition of the axis vehicle because the pile stabilizing platform is lifted, loaded and shipped by the axis vehicle; because the pile stabilizing platform is in a multi-section form after being laid down, one end of the pile stabilizing platform is positioned outside the structure when the roof of the same axis rises, and in order to overcome the situation, a pair of cantilever beam inverted T-shaped saddles 44 for supporting the pile embracing device 1 are required to be manufactured according to the section change of the pile stabilizing platform after being laid down; the inverted-T cantilever saddle 44 includes a post 441, a cantilever beam 442, and a raker beam 443; the upright post 441 is a hollow quadrangular prism formed by welding steel plates, reinforcing webs are arranged at intervals inside the upright post 441, and the cross section of the upright post 441 is rectangular with the length multiplied by the width =1220mm multiplied by 800 mm; the top surface of the upright post 441 is supported on the bottom surface of the supporting upright post 13 through a top cushion plate 444, and two first toggle plates 445 in a right-angled triangle shape are respectively connected between the upper parts of two side surfaces of the upright post 441 and the bottom surface of the supporting upright post 12; the cantilever beam 442 is also welded into a hollow quadrangular prism by a steel plate and is connected to one side of the upright post 441, the cross section of the cantilever beam 442 is rectangular with the length × width =800mm × 1100mm, and two right-angled triangular second toggle plates 446 are connected between the bottom surface of the cantilever beam 442 and the side surface of the upright post 441; the raker beam 443 is also welded into a hollow quadrangular prism by steel plates and connected between the top surface of the outer part of the cantilever beam 442 and the outer side surface of the support column 13, the cross section of the raker beam 443 is rectangular with the length × width =800mm × 580mm, and two isosceles triangular third toggle plates 447 are connected between the outer part of the top surface of the raker beam 443 and the top surface of the cantilever beam 442 (see fig. 5a, 5b and 5 c);
arranging a saddle on the general assembly platform 4; taking the total length of the whole pile stabilizing platform after lying down 60m as the length of the total assembly platform 4, taking the distance between two pile pipes at the tail part of the jacket 2 as the width of the total assembly platform 4, taking the installation position of the anti-sinking plate 3 as a reference line 40, sequentially arranging a pair of first conventional saddles 41 at positions 9.7m away from the reference line, arranging a pair of second conventional saddles 42 at positions 10m away from the first conventional saddles, arranging a pair of third conventional saddles 43 at positions 24m away from the second conventional saddles, and finally arranging a pair of cantilever inverted T-shaped saddles 44 at positions 12m away from the third conventional saddles (see fig. 6), wherein the pair of first conventional saddles 41, the pair of second conventional saddles 42 and the pair of third conventional saddles 43 are all positioned below the jacket 2, and the pair of cantilever inverted T-shaped saddles 44 are positioned below the support upright 13 between the upper and lower platforms of the pile stabilizing platform;
sixthly, horizontally positioning the jacket 2; the left jacket piece 21 and the right jacket piece 22 are transferred to the lower part of a 1000T gantry crane, and as the left jacket piece 21 and the right jacket piece 22 are both of pipe body structures, if lifting lugs are welded on a pipe body, the base material of the pipe body is easily damaged, the left jacket piece 21 and the right jacket piece 22 are hoisted by adopting soft hanging straps; firstly, hoisting a left jacket sheet 21 and a right jacket sheet 22 to a pair of first conventional saddles 41, a pair of second conventional saddles 42 and a pair of third conventional saddles 43 of a general assembly platform 4 by using a soft hanging strip, and then respectively installing two wind ropes 5 on two surfaces of the left jacket sheet 21 and two surfaces of the right jacket sheet 22, wherein the distance between the two wind ropes 5 is 30m, and the bottoms of the two wind ropes 5 are connected to a cement pier 50; then, building scaffolds 200 in the operation area of the jacket 2, namely building the scaffolds 200 at the butt joint part of the front end of the jacket and the anti-sinking plate 3, the butt joint part of the rear end of the jacket and the pile gripper, the upper plane part of the jacket and the lower plane part of the jacket respectively; after the scaffold 200 is built, the connecting pipes 23 on the upper plane of the jacket and the connecting pipes 23 on the lower plane of the jacket 2 are installed to form the integral jacket 2 (see fig. 7a and 7 b);
the process step seven, the pile gripper 1 and the jacket 2 are folded, and the method comprises the following steps;
firstly, hanging two upper platform main lifting lugs 15 on an upper platform 11 of a pile gripper on a 500T lifting hook of a lower trolley 61 of a gantry crane at the same time, and hanging two upper platform auxiliary lifting lugs 16 on the upper platform 11 of the pile gripper on two 450T lifting hooks of an upper trolley 62 of the gantry crane respectively (see fig. 8 a);
step two, after the pile gripper 1 is lifted slowly to a certain height, the 450T lifting hook of the upper trolley 62 is lifted, the 500T lifting hook of the lower trolley 61 is lowered, the hook is loosened completely when the 500T lifting hook of the lower trolley 61 is not stressed, then the two upper platform main lifting lugs 15 at the tail part of the pile gripper upper platform 11 are separated from the connecting shaft of the hoisting steel wire rope of the lower trolley 61 through the climbing trolley, the lower trolley 61 of the gantry crane is moved to the upper part of the pile-gripping side of the pile gripper lower platform 12, the hoisting steel wire rope of the lower trolley 61 of the gantry crane is connected to the two lower platform main lifting lugs 17 on the pile gripper lower platform 12 through the climbing trolley, the lifting hook of the lower trolley 61 of the gantry crane is lifted slowly until the pile gripper upper platform 11 and the pile gripper lower platform 12 are basically vertical, and the whole pile gripper 1 is turned over by 90 degrees (see fig. 8b to 8 d), so that the pile gripper 1 is in a horizontal state;
moving the pile embracing device 1 to an interface of the jacket 2, finely adjusting the size of the interface of the pile embracing device 1, then placing the size of the interface on a pair of cantilever beam inverted T-shaped saddles 44 of the total assembly platform 4, performing positioning welding of the pile embracing device 1 and the jacket 2 without loosening a lifting hook of a lower trolley 61 of a gantry crane (see figure 8 e), performing full penetration welding on four interfaces between the pile embracing device 1 and the jacket 2, and performing UT detection;
eighthly, folding the left and right pieces of the anti-sinking plate and folding the anti-sinking plate 3 and the jacket 2; the method comprises the following steps:
firstly, transferring an anti-sinking plate left piece 31 and an anti-sinking plate right piece 32 to a horizontal jig frame below a 1000T gantry crane; firstly, placing the anti-sinking plate left piece 31 on a horizontal jig frame, and then hoisting the anti-sinking plate right piece 32 and the anti-sinking plate left piece 31 to be folded to form the integral anti-sinking plate 3 (see fig. 9 a); the interface positions of the left anti-sink plate piece 31 and the right anti-sink plate piece 32 require full penetration welding, and UT detection is carried out;
step two, hanging two straightening lifting lugs 35 at the tail part of the anti-sinking plate 3 on 500T lifting hooks of a lower trolley 61 of the gantry crane at the same time, hanging two lifting lugs 34 at the pile embracing side of the anti-sinking plate 3 on two 450T lifting hooks of an upper trolley 62 of the gantry crane respectively, slowly lifting to a certain height, then lifting the two 450T lifting hooks of the upper trolley 62, descending the 500T lifting hooks of the lower trolley 61, and completely releasing the hooks when the 500T lifting hooks of the lower trolley 61 are not stressed, so that the anti-sinking plate 3 is upright (see fig. 9 b);
and step three, moving the upright anti-sink plate 3 to the interface of the jacket 2, finely adjusting the size of the interface, performing tack welding of the anti-sink plate 3 and the jacket 2 without loosening a lifting hook of an upper trolley 62 of the gantry crane (see fig. 10), performing full penetration welding on four interfaces between the anti-sink plate 3 and the jacket 2, and performing UT detection.
And a ninth process, checking the whole size of the pile stabilizing platform, and checking the installation integrity of the rest auxiliary components.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (3)
1. A construction method for total assembly and closure of a pile-stabilizing platform adopts a horizontal total assembly, and is characterized by comprising the following procedures:
a first process for manufacturing a large component, the large component comprising: the pile gripper comprises a pile gripper upper platform, a pile gripper lower platform, a support upright post and a support diagonal brace between the pile gripper upper platform and the pile gripper lower platform, a jacket left piece, a jacket right piece, a connecting pipe between the jacket left piece and the jacket right piece, an anti-sinking plate left piece and an anti-sinking plate right piece;
and a second process, namely arranging lifting lugs on the large component, and comprising the following steps:
arranging a pair of upper platform main lifting lugs and a pair of upper platform auxiliary lifting lugs on an upper platform of a pile gripper; the pair of upper platform main lifting lugs are arranged at the tail part of the upper platform of the pile gripper; the pair of upper platform auxiliary lifting lugs are arranged on the pile embracing side of the upper platform of the pile embracing device;
step two, arranging a pair of lower platform main lifting lugs and a pair of lower platform auxiliary lifting lugs on a lower platform of the pile embracing device, wherein the pair of lower platform main lifting lugs are arranged on the pile embracing side of the lower platform of the pile embracing device; the pair of lower platform auxiliary lifting lugs are arranged at the tail of the lower platform of the pile gripper;
thirdly, respectively arranging a reverse transportation lifting lug on the outer side of the pile embracing side pile hole of the left piece of the anti-sinking plate, the outer side of the tail pile hole of the left piece of the anti-sinking plate, the outer side of the pile embracing side pile hole of the right piece of the anti-sinking plate and the outer side of the tail pile hole of the right piece of the anti-sinking plate; respectively arranging a hoisting lifting lug on the inner side of the pile-embracing side pile hole of the left piece of the anti-sinking plate and the inner side of the pile-embracing side pile hole of the right piece of the anti-sinking plate; arranging a straightening lifting lug on the inner side of the tail pile hole of the left anti-sinking plate and the inner side of the tail pile hole of the right anti-sinking plate respectively;
and thirdly, folding the upper platform and the lower platform of the pile gripper, adopting normal folding and comprising the following steps:
firstly, transferring a lower platform of a pile gripper to the lower part of a gantry crane; hoisting the lower platform of the pile gripper to a horizontal jig frame from a transfer trolley by using a gantry crane, and carrying out leveling inspection;
step two, respectively installing four support stand columns between an upper platform and a lower platform of the pile gripper on the lower platform of the pile gripper, welding bottom openings of the four support stand columns with the lower platform of the pile gripper according to drawing requirements after adjustment is completed, and then building a scaffold at the positions of the upper openings of the four support stand columns, wherein the height of the scaffold is 3-4 meters downwards from the upper plane of the support stand columns;
hoisting the pile gripper upper platform to the upper ends of the four supporting stand columns from the transfer trolley by using a gantry crane, adjusting the positioning size, then performing positioning welding, requiring an inspector to check the verticality of the four supporting stand columns and the levelness of the pile gripper upper platform, and welding only after meeting the drawing requirements, and meanwhile, building a scaffold at the position of a supporting diagonal brace between the pile gripper upper platform and the pile gripper lower platform;
step four, mounting the support inclined strut according to the requirements of a drawing;
installing an auxiliary component on the pile gripper to form an integral pile gripper;
manufacturing a pair of cantilever beam inverted T-shaped saddles for supporting the pile grippers;
arranging a saddle on the overall assembly platform; taking the total length of the whole pile stabilizing platform after lying down as the length of a total assembly platform, taking the distance between two pile pipes at the tail part of a jacket as the width of the total assembly platform, taking the installation position of an anti-sinking plate as a reference line, arranging a pair of first conventional saddles at a position 9.7m away from the reference line, arranging a pair of second conventional saddles at a position 10m away from the first conventional saddles, arranging a pair of third conventional saddles at a position 24m away from the second conventional saddles, and finally arranging a pair of cantilever beam inverted T-shaped saddles at a position 12m away from the third conventional saddles; the pair of cantilever beam inverted T-shaped saddles are positioned below a supporting upright post between an upper platform and a lower platform of the pile gripper;
sixthly, horizontally positioning the jacket; the left and right pieces of the jacket are transferred to the lower part of a gantry crane, the left and right pieces of the jacket are firstly hoisted to three pairs of conventional saddles of the total assembly platform by using flexible hanging strips, then two wind ropes are respectively arranged on the two sides of the left and right pieces of the jacket, the distance between the two wind ropes is 30m, and the bottoms of the two wind ropes are both connected to a cement pier; then, building scaffolds in the operation area of the jacket, namely building the scaffolds at the butt joint part of the front end of the jacket and the anti-sinking plate, the butt joint part of the rear end of the jacket and the pile clip, the upper plane part of the jacket and the lower plane part of the jacket respectively; after the scaffold is built, mounting a connecting pipe on the upper plane of the jacket and mounting a connecting pipe on the lower plane of the jacket to form an integral jacket;
seventhly, folding the pile gripper and the jacket, wherein the folding process comprises the following steps;
firstly, hanging two upper platform main lifting lugs on an upper platform of a pile gripper on lifting hooks of a lower trolley of a gantry crane simultaneously, hanging two upper platform auxiliary lifting lugs on the upper platform of the pile gripper on two lifting hooks of an upper trolley of the gantry crane respectively,
step two, after the pile gripper is lifted slowly to a certain height, two lifting hooks of the upper trolley rise, the lifting hook of the lower trolley descends, and the hook is loosened completely when the lifting hook of the lower trolley is not stressed; then, two upper platform main lifting lugs at the tail part of an upper platform of the pile gripper are separated from a connecting shaft of a hoisting steel wire rope of a lower trolley by a climbing vehicle, the lower trolley of the gantry crane is moved to the upper part of the pile gripping side of a lower platform of the pile gripper, the hoisting steel wire rope of the lower trolley of the gantry crane is connected to the two lower platform main lifting lugs on the lower platform of the pile gripper by the climbing vehicle, a lifting hook of the lower trolley is slowly lifted until the upper platform and the lower platform of the pile gripper are basically vertical, and the whole pile gripper is turned over for 90 degrees;
moving the pile embracing device to an interface of the jacket, finely adjusting the size of the interface of the pile embracing device, and then, placing a rear seat on a pair of cantilever beam inverted T-shaped saddles of the total assembly platform, wherein a lifting hook of a lower trolley of the gantry crane is not loosened to perform positioning welding of the pile embracing device and the jacket, and four interfaces between the pile embracing device and the jacket are all full penetration welding;
eighthly, folding the left and right pieces of the anti-sinking plate and folding the anti-sinking plate and the jacket; the method comprises the following steps:
firstly, transferring left and right pieces of an anti-sinking plate to a horizontal jig frame below a gantry crane; placing the left anti-sinking plate on the horizontal jig frame, and then lifting the right anti-sinking plate and the left anti-sinking plate to be folded to form an integral anti-sinking plate; the interface positions of the left and right pieces of the anti-sinking plate require full penetration welding and UT detection is carried out;
step two, hanging two straightening lifting lugs at the tail part of the anti-sinking plate on lifting hooks of a lower trolley of the gantry crane simultaneously, hanging two lifting lugs at the pile holding side of the integral anti-sinking plate on two lifting hooks of an upper trolley of the gantry crane respectively, slowly lifting to a certain height, then lifting the two lifting hooks of the upper trolley, descending the lifting hooks of the lower trolley, and completely releasing the hooks when the lifting hooks of the lower trolley are not stressed so as to enable the anti-sinking plate to be upright;
moving the vertical anti-sink plate to an interface of the jacket, finely adjusting the size of the interface, performing positioning welding on the anti-sink plate and the jacket without loosening an upper trolley lifting hook of the gantry crane, performing full penetration welding on four interfaces between the anti-sink plate and the jacket, and performing UT detection;
and a ninth process, checking the whole size of the pile stabilizing platform, and checking the installation integrity of the rest auxiliary components.
2. The construction method of the total assembly of the pile-stabilizing platform according to claim 1, characterized in that all the large components are transferred to a sand washing paint room for coating after being manufactured.
3. The construction method of the total assembly and closure of the pile stabilizing platform according to claim 1, wherein the cantilever beam inverted-T saddle comprises a vertical column, a cantilever beam and a diagonal bracing beam; the upright post is a hollow quadrangular prism with a rectangular section formed by welding steel plates, reinforcing webs are arranged at intervals in the upright post, the top surface of the upright post is propped against the bottom surface of the supporting upright post through a top cushion plate, and two first toggle plates are respectively connected between the upper parts of two side surfaces of the upright post and the bottom surface of the supporting upright post; the cantilever beam is also welded into a hollow quadrangular prism with a rectangular cross section by a steel plate and is connected to one side of the upright post, the length of the cross section of the cantilever beam is the same as the width of the cross section of the upright post, and two second toggle plates are connected between the bottom surface of the cantilever beam and the side surface of the upright post; the inclined strut beam is also welded into a hollow quadrangular prism with a rectangular cross section by steel plates and is connected between the external top surface of the cantilever beam and the outer side surface of the supporting upright post, the length of the cross section of the inclined strut beam is the same as that of the cross section of the cantilever beam, and two third toggle plates are connected between the top surface of the inclined strut beam and the top surface of the cantilever beam.
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| CN115897578A (en) * | 2022-10-28 | 2023-04-04 | 中交第三航务工程局有限公司 | Underwater pile sinking positioning system for foundation steel pipe piles of deepwater four-pile jacket |
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| BE1019832A4 (en) * | 2011-02-22 | 2013-01-08 | Geosea N V | DEVICE FOR MANUFACTURING A FOUNDATION FOR A HIGH-FIXED MASS, RELATED METHOD AND COMPOSITION OF THE DEVICE AND A LIFTING PLATFORM. |
| TWM542673U (en) * | 2016-11-25 | 2017-06-01 | Taiwan Marine Heavy Industry Co Ltd | Offshore maritime work flip type pile holder with correction function |
| CN107130600B (en) * | 2017-05-25 | 2019-09-24 | 江苏亨通蓝德海洋工程有限公司 | A kind of construction method for migrating formula automatic deviation correction single pile pile gripper construction mechanism |
| CN109137867B (en) * | 2018-10-11 | 2019-09-24 | 江苏长风海洋装备制造有限公司 | One kind, which is made and lies on one's side for large jacket side, builds transportation technology |
| CN109208596A (en) * | 2018-11-06 | 2019-01-15 | 江苏龙源振华海洋工程有限公司 | One word of one kind turns over technique |
| CN209568440U (en) * | 2018-12-25 | 2019-11-01 | 上海佳豪船海工程研究设计有限公司 | One kind turning over a guider |
| CN109629568A (en) * | 2018-12-30 | 2019-04-16 | 中交第三航务工程局有限公司江苏分公司 | The process for sinking of the steady stake platform of offshore wind farm jacket foundation steel pipe pile floating |
| CN110130349A (en) * | 2019-04-18 | 2019-08-16 | 江苏亨通蓝德海洋工程有限公司 | A kind of convertible single pile pile gripper construction mechanism and construction method |
| CN111547197A (en) * | 2020-05-29 | 2020-08-18 | 中交第一航务工程局有限公司 | Offshore wind power pile vertical pile construction ship and vertical pile construction method |
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