A method for vertically constructing a three-pile guide frame

Abstract

The present application discloses a method for vertically constructing a three-pile guide frame, in the technical field of offshore wind power steel pipe pile construction, comprising the following steps: ground sample marking and pad arrangement steps; lower large section platform assembly step, hoisting and erecting the second sheet of the lower large section and moving it to the guide frame pad for positioning, using a reinforcement assembly to fix the second sheet of the lower large section, hoisting the inter-sheet truss and positioning and welding it, hoisting and erecting the first sheet of the lower large section and moving it to the guide frame pad for positioning and welding; guide frame upper section assembly step, positioning and docking the guide frame upper section and the lower large section platform; lower guide device assembly step: hoisting the lower guide device, adjusting the lower guide device according to the position deviation value between the center point of the second positioning cursor and the center point of the first positioning cursor, and welding the lower guide device to the lower large section platform. The present application can ensure the accuracy of the upper guide device and the lower guide device while improving the construction efficiency of the three-pile guide frame.

Description

Technical Field

[0001] The present application relates to the technical field of offshore wind power steel pipe pile construction, and in particular to a method for vertically constructing a three-pile guide frame. Background Art

[0002] The guide frame is mainly used for positioning and piling of offshore wind power steel pipe piles. The three-pile guide frame can simultaneously position and pile three steel pipe piles. The three-pile guide frame is generally divided into three parts, namely the upper section of the guide frame, the lower section of the guide frame and the auxiliary positioning piles. The upper section of the guide frame is used for the pile driver, the lower section of the guide frame is used for frame connection, and the auxiliary positioning piles are used to fix the guide frame. Among them, the upper section of the guide frame contains an upper guide device, and the lower section of the guide frame contains a lower guide device. The upper guide device and the lower guide device together guide the positioning of the auxiliary positioning piles.

[0003] The current construction method is to make the upper and lower sections of the guide frame separately and then put them together. However, the corresponding upper and lower guide devices cannot ensure coaxiality, and they cannot be installed when the auxiliary positioning piles are installed later. How to ensure the construction efficiency of the three-pile guide frame while ensuring the dimensional accuracy after forming has become one of the construction problems. Summary of the invention

[0004] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application provides a method for vertically constructing a three-pile guide frame, assembling the various parts of the three-pile guide frame in a specific order and connection method, so as to improve the construction efficiency of the three-pile guide frame while ensuring the accuracy of the upper guide device and the lower guide device.

[0005] The method for vertically constructing a three-pile guide frame according to an embodiment of the present application comprises the following steps:

[0006] Ground sample marking and pad arrangement steps: draw a ground sample line, install multiple guide frame pads on the foundation, level the upper end surface of each guide frame pad to ensure that the upper surface of each guide frame pad is in the same horizontal plane;

[0007] The assembly steps of the lower large section platform are as follows: the lower large section platform is divided into a lower large section first sheet, a lower large section second sheet, a plurality of truss parts and a plurality of inter-sheet trusses for prefabrication, wherein a second verticality cursor for measuring verticality is pasted on the outer side of the lower large section second sheet; the lower large section second sheet is hoisted and erected and moved to the guide frame pad for positioning, the verticality of the lower large section second sheet is controlled based on the second verticality cursor, and the lower large section second sheet is fixed with a reinforcement assembly to ensure the stability of the lower large section second sheet after erection and installation; the inter-sheet trusses are hoisted and positioned, and the inter-sheet trusses are fixed. The first sheet of the lower large section is hoisted and erected and moved to the guide frame pad for positioning, a first verticality cursor for measuring verticality is pasted on the outer side of the first sheet of the lower large section, and the verticality of the first sheet of the lower large section is controlled based on the first verticality cursor, and the connecting weld between the other end of the inter-sheet truss and the first sheet of the lower large section is welded; the first sheet of the lower large section, the second sheet of the lower large section and the inter-sheet truss constitute the main structure of the lower large section; the truss parts are welded to the main structure of the lower large section to complete the assembly of the lower large section platform;

[0008] The steps of assembling the upper section of the guide frame are as follows: the upper section of the guide frame is prefabricated as a whole by adopting the reverse manufacturing process, and the upper section of the guide frame includes an upper large section platform and a plurality of upper guide devices arranged on the side of the upper large section platform; the first positioning cursor of each upper guide device is marked, and the positioning of each upper guide device is checked to be accurate based on the first positioning cursor. After the inspection is qualified, the upper section of the guide frame and the lower large section platform are positioned and docked, and temporarily fixed by positioning welding. The upper section of the guide frame and the lower large section platform are inspected for size, and the welding of the two is completed after the inspection is qualified;

[0009] Assembly steps of the lower guide device: after each lower guide device is prefabricated, mark the second positioning cursor of the lower guide device; use the first positioning cursor as the installation reference, lift the lower guide device, make the second positioning cursor correspond to the first positioning cursor, and adjust the lower guide device according to the position deviation value between the center point of the second positioning cursor and the center point of the first positioning cursor until the positioning size of the lower guide device is qualified; weld the lower guide device to the lower large section platform; the lower large section platform and the lower guide device constitute the lower section of the guide frame.

[0010] In an optional or preferred embodiment, the lower large section platform is divided into the lower large section first sheet and the lower large section second sheet in the long axis direction, the lower large section first sheet and the lower large section second sheet each include main leg tubes on both sides and a long axis truss structure located between the two main leg tubes, and the lower large section platform is divided into the inter-sheet trusses in the short axis direction.

[0011] In an optional or preferred embodiment, in the assembly step of the upper section of the guide frame, the center of any of the main leg tubes is used as a measurement reference point to measure the positioning dimensions of the upper guide device, the upper guide device is a square structure, the angle steels are placed along the diagonal, and the first positioning cursor is pasted at the intersection of the angle steels. The positioning dimensions of each of the upper guide devices are measured using the first positioning cursor as a reference.

[0012] In an optional or preferred embodiment, the lower guide device is installed according to the positioning dimensions of the upper guide device during installation. The lower guide device is a cylindrical structure. The center position of the lower guide device is calculated by measuring any three points of the outer diameter of the cylindrical structure. The center position is the position of the second positioning cursor. When the lower guide device is installed, the second positioning cursor corresponds to the first positioning cursor of the upper guide device, and the position deviation between the two is ≤3mm to ensure the positioning dimensions of the lower guide device.

[0013] In an optional or preferred embodiment, adjustment components are provided on the upper part of the first sheet of the lower large section and on the left and right sides of the upper part of the second sheet of the lower large section, and the adjustment components include two adjustment ears respectively provided on the inner and outer sides, and the adjustment ears are used to connect the steel wire adjustment rope to control the verticality of the first sheet of the lower large section or the second sheet of the lower large section.

[0014] In an optional or preferred embodiment, in the step of assembling the lower large section platform, each of the adjustment ears of the second sheet of the lower large section is respectively connected with a steel wire adjustment rope, and the other end of the steel wire adjustment rope is fixed by a hand winch, and the position of each of the adjustment ears is adjusted by each hand winch to adjust the verticality of the second sheet of the lower large section; the hand winch and the steel wire adjustment rope are also used to adjust the verticality of the first sheet of the lower large section.

[0015] In an optional or preferred embodiment, after adjusting the verticality of the second sheet of the lower large section, the reinforcement assembly is installed, and the reinforcement assembly includes a plurality of reinforcement code plates directly or indirectly welded and fixed to the bottom of the main leg tube, and each of the reinforcement code plates is distributed circumferentially along the main leg tube; after each of the reinforcement code plates is welded and the steel wire adjustment ropes connected to each of the adjustment ears are tightened, the second sheet of the lower large section is unhooked.

[0016] In an optional or preferred embodiment, in the step of assembling the lower large section platform, when installing the inter-sheet trusses, after the inter-sheet trusses are positioned, temporary support components are used to reinforce and support the inter-sheet trusses, and after 40% of the connection welds between the inter-sheet trusses and the first sheet of the lower large section are completed, the inter-sheet trusses are unhooked.

[0017] In an optional or preferred embodiment, after 40% of the connection weld between the inter-sheet truss and the first sheet of the lower large section is completed, the first sheet of the lower large section is unhooked.

[0018] In an optional or preferred embodiment, in the ground sample marking and pad arrangement steps, a guide frame pad is set based on the main leg tube, and a positioning mark of the main leg tube is marked on the guide frame pad. The guide frame pad is fixed to the foundation with expansion screws, and foundation settlement is monitored during the assembly of the guide frame upper section and the guide frame lower section.

[0019] Based on the above technical solution, the embodiments of the present application have at least the following beneficial effects:

[0020] The above technical scheme divides the three-pile guide frame into an upper section of the guide frame and a lower section of the guide frame for separate construction, and can be constructed separately at the same time to improve construction efficiency; the upper guide device is directly manufactured on the upper large section platform when the upper section of the guide frame is constructed, and is constructed using a reverse manufacturing method, and the first positioning cursor of each upper guide device is marked; the construction of the lower section of the guide frame is to first manufacture the lower large section platform, and the lower large section platform is prefabricated using the first sheet of the lower large section, the second sheet of the lower large section, truss parts and trusses between the sheets, and then constructed in a vertical middle assembly manner, after the upper section of the guide frame and the lower large section platform are closed, the lower guide devices are assembled in bulk, the second positioning cursor of the lower guide device is marked, and the lower guide device is adjusted according to the position deviation value between the center point of the second positioning cursor and the center point of the first positioning cursor to ensure the coaxiality between the upper guide device and the lower guide device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present application is further described below with reference to the accompanying drawings and embodiments;

[0022] Figure 1 It is a schematic diagram of the arrangement of the guide frame pad in the embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the fixed installation of the guide frame pad in the embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the hoisting process of the second large piece under the embodiment of the present application;

[0025] Figure 4 yes Figure 3A partial enlarged view of circle A in the middle;

[0026] Figure 5 yes Figure 4 Cross-sectional view along the BB direction;

[0027] Figure 6 This is a schematic diagram of the hoisting of a large section of the second sheet under an embodiment of the present application;

[0028] Figure 7 yes Figure 6 A partial enlarged view of the middle C circle;

[0029] Figure 8 yes Figure 7 Cross-sectional view along the DD direction;

[0030] Fig. 9 It is a schematic diagram of the hoisting of the inter-sheet truss in the embodiment of the present application;

[0031] Fig.10 yes Fig. 9 Sectional view along EE direction;

[0032] Fig.11 yes Fig. 9 Sectional view along the FF axis;

[0033] Fig.12 It is a structural schematic diagram of a large section platform in an embodiment of the present application;

[0034] Fig.13 It is a structural schematic diagram of the upper section of the guide frame of an embodiment of the present application;

[0035] Fig.14 It is a schematic diagram of the hoisting of the upper section of the guide frame of the embodiment of the present application;

[0036] Fig.15 is a schematic diagram of the hoisting of the guide device according to the embodiment of the present application;

[0037] Fig.16 This is a schematic diagram of the structure of the pile guide frame of the third embodiment of the present application;

[0038] Fig.17 is a schematic diagram of positioning of the guide device in the embodiment of the present application;

[0039] Fig.18 is a schematic diagram of positioning of the guide device in an embodiment of the present application;

[0040] Fig.19 It is a schematic diagram of the step flow of an embodiment of the present application.

[0041] Reference numerals: guide frame lower section 100, lower large section platform 101, lower large section first sheet 110, lower large section second sheet 120, main leg tube 121, long axis truss structure 122, second verticality cursor 123, inter-sheet truss 130, truss parts 141, first half anti-sinking plate 151, second half anti-sinking plate 152, lower guide device 160, second positioning cursor 161;

[0042] The upper section of the guide frame 200, the upper large section platform 210, the upper guide device 220, and the first positioning cursor 221;

[0043] Guide frame pad 311, positioning mark 312, expansion screw 313, steel wire adjustment rope 321, hand chain hoist 322, reinforcement code plate 331, adjustment component 340, adjustment lug 341, temporary support component 350, rooting piece 361. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0050] In offshore wind power construction, the guide frame is widely used as an auxiliary structure for positioning and guiding piles. The three-pile guide frame is generally divided into three parts, namely the guide frame upper section 200, the guide frame lower section 100 and the auxiliary positioning piles. Among them, the guide frame upper section 200 contains an upper guide device 220, and the guide frame lower section 100 contains a lower guide device 160. The upper guide device 220 and the lower guide device 160 together guide the positioning of the auxiliary positioning piles.

[0051] The current construction method is to manufacture the guide frame upper section 200 and the guide frame lower section 100 separately and then close them together. However, the corresponding upper guide device 220 and the lower guide device 160 cannot ensure coaxiality. When the auxiliary positioning piles are subsequently installed, the auxiliary positioning piles are difficult to install due to the insufficient coaxiality accuracy of the upper guide device 220 and the lower guide device 160.

[0052] Refer to the following Figures 1 to 19This embodiment describes a method for vertically constructing a three-pile guide frame. The guide frame upper section 200 and the guide frame lower section 100 need to be assembled as a whole and shipped to the sea together, and the auxiliary positioning piles are shipped separately with the ship. The auxiliary positioning piles are only long steel pipe structures, and the construction method of the present invention does not include the production and installation of the auxiliary positioning piles.

[0053] In the method for vertically constructing a three-pile guide frame in this embodiment, the three-pile guide frame is divided into an upper guide frame section 200 and a lower guide frame section 100. Fig.13 As shown, the guide frame upper section 200 is prefabricated as a whole by using a reverse manufacturing process, and the upper guide device 220 is directly manufactured on the upper large section platform 210 when the guide frame upper section 200 is constructed.

[0054] like Fig.12 As shown, the guide frame lower section 100 is constructed in a vertical middle assembly manner to construct a lower large section platform 101, and the lower guide device 160 is not installed first. The lower large section platform 101 is divided into a lower large section first sheet 110, a lower large section second sheet 120, a plurality of truss parts 141, and a plurality of inter-sheet trusses 130 for prefabrication. Among them, the lower large section platform 101 is divided into the lower large section first sheet 110 and the lower large section second sheet 120 in the long axis direction a, and the lower large section first sheet 110 and the lower large section second sheet 120 both include main leg tubes 121 on both sides and a long axis truss structure 122 located between the two main leg tubes 121, and the lower large section platform 101 is divided into the inter-sheet trusses 130 in the short axis direction b.

[0055] The method of vertically constructing a three-pile guide frame is as follows: Fig.19 , including the following steps:

[0056] S1, ground sample marking and pad layout steps:

[0057] Reference Figure 1 , draw a ground sample line, install multiple guide frame pads 311 on the foundation, level the upper end surface of each guide frame pad 311, ensure that the upper surface of each guide frame pad 311 is in the same horizontal plane, and the height difference of the upper end surface of each guide frame pad 311 is controlled within 2 mm.

[0058] Specifically, after the ground sample line is drawn, the guide frame pad 311 is set with the main leg tube 121 as the reference, and after the upper end of the guide frame pad 311 is leveled, refer to Figure 2 , a positioning mark 312 of the main leg tube 121 is marked on the guide frame pad 311, and the guide frame pad 311 is fixed to the foundation using expansion screws 313. In this embodiment, the specification of the guide frame pad 311 shall not be less than 30 mm×3000 mm×3000 mm.

[0059] In addition, in the subsequent steps, that is, during the assembly of the guide frame upper section 200 and the guide frame lower section 100, it is necessary to monitor the foundation settlement.

[0060] S2, the steps for assembling the lower platform:

[0061] Combination Figure 2 , Fig. 9 , Fig.10 and Fig.12 The lower large section platform 101 is prefabricated into a lower large section first sheet 110, a lower large section second sheet 120, a plurality of truss parts 141, and a plurality of inter-sheet trusses 130, wherein the inter-sheet trusses 130 are connected between the lower large section first sheet 110 and the lower large section second sheet 120. In this embodiment, the outer dimensions of the lower large section first sheet 110 and the lower large section second sheet 120 are both 25.97m×30.5m×4.15m.

[0062] like Figure 2 As shown, the second sheet 120 of the lower large section is prefabricated on the ground, and then the size is checked. After passing the inspection, it is combined with Figure 3 For understanding, a second verticality cursor 123 for measuring verticality is pasted on the outer side of the second sheet body 120 of the lower large section.

[0063] Reference Figure 2 , hoist the second large section of the sheet 120, and then turn it over until it is erected. The state after erection is as follows Figure 6 As shown, it is moved to the guide frame pad 311 for positioning, and the verticality of the lower large section second sheet 120 is controlled based on the second verticality cursor 123, and the lower large section second sheet 120 is fixed with a reinforcement component to ensure the stability of the lower large section second sheet 120 after upright installation.

[0064] Reference Fig. 9 and Fig.10 , the inter-sheet truss 130 is hoisted and positioned, and one end of the inter-sheet truss 130 is welded and fixed to the second sheet 120 of the lower section. When installing the inter-sheet truss 130, after the inter-sheet truss 130 is positioned, the inter-sheet truss 130 is reinforced and supported by a temporary support assembly 350, and after the connection weld between the inter-sheet truss 130 and the first sheet 110 of the lower section reaches 40%, the inter-sheet truss 130 is unhooked.

[0065] In this embodiment, there are two inter-sheet trusses 130, both of which are installed in the same way. The dimensions of the inter-sheet trusses 130 are 16.2m×4.0m×0.6m. When positioning the inter-sheet trusses 130, the spacing between the inter-sheet trusses 130 must be strictly controlled, wherein the diagonal difference must not be greater than 5mm.

[0066] Combination Fig.12 To understand, the first sheet 110 of the lower section is hoisted and erected and moved to the guide frame pad 311 for positioning. The hoisting of the first sheet 110 of the lower section can refer to the hoisting steps of the second sheet 120 of the lower section, which will not be repeated here. A first verticality cursor for measuring verticality is pasted on the outer side of the first sheet of the lower section, and the verticality of the first sheet 110 of the lower section is controlled based on the first verticality cursor, and then the connecting weld between the other end of the inter-sheet truss 130 and the first sheet 110 of the lower section is welded.

[0067] The first lower section body 110, the second lower section body 120 and the inter-section trusses 130 form the lower section main structure. Subsequently, the truss parts 141 are welded to the lower section main structure to complete the assembly of the lower section platform 101.

[0068] In the verticality control of the lower large section first sheet 110 and the lower large section second sheet 120, the present embodiment adjusts the verticality by setting an adjustment component 340. Specifically, in combination with Figure 3 , Figures 6 to 8 It is understood that the upper part of the lower large section first sheet 110 and the upper part of the lower large section second sheet 120 are both provided with adjustment components 340 on both sides. The adjustment components 340 include two adjustment ears 341 respectively arranged on the inner and outer sides. The adjustment ears 341 are used to connect the steel wire adjustment rope 321 to control the verticality of the lower large section first sheet 110 or the lower large section second sheet 120. The specific use of the adjustment components 340 is to use the steel wire adjustment rope 321 to connect the adjustment ears 341 of the lower large section second sheet 120 respectively, taking the adjustment of the verticality of the lower large section second sheet 120 as an example, and the other end of the steel wire adjustment rope 321 is fixed by a hand chain hoist 322, and the position of each adjustment ear 341 is adjusted by each hand chain hoist 322, so as to adjust the verticality of the lower large section second sheet 120. The hand chain hoist 322 and the steel wire adjustment rope 321 are also used to adjust the verticality of the lower large section first sheet 110. The verticality deviation of the first lower large section sheet 110 and the second lower large section sheet 120 shall not be greater than 3 mm.

[0069] In this embodiment, after adjusting the verticality of the lower large second sheet 120, the reinforcement assembly is installed. Figure 5 The reinforcement assembly includes a plurality of reinforcement code plates 331 directly or indirectly welded and fixed to the bottom of the main leg tube 121, and each reinforcement code plate 331 is distributed circumferentially along the main leg tube 121; each reinforcement code plate 331 needs to be welded and each steel wire adjustment rope 321 connected to each adjustment ear 341 is tightened before the lower large section of the second sheet 120 can be unhooked.

[0070] Similarly, the lower large section first sheet 110 may be unhooked only after the connection weld between the sheet inter-sheet truss 130 and the lower large section first sheet 110 reaches 40%.

[0071] It should be noted that, as known to those skilled in the art, in the present embodiment, each component is turned over and hoisted by a crane, for example, a gantry crane is used, and each component is hoisted by the hook of the crane, and loosening the hook means that the crane removes the lifting force, that is, the lifting wire rope is not tightened.

[0072] In addition, in this embodiment, an anti-sinking plate 150 is provided at the bottom of each main leg tube 121, wherein the first half anti-sinking plate 151 is installed when the lower large section first sheet 110 and the lower large section second sheet 120 are prefabricated. Figure 3 As shown, the second half anti-sinking plate 152 is installed after the lower large section platform 101. When this method is adopted, the first half anti-sinking plate 151 can be accurately positioned when the lower large section first sheet 110 and the lower large section second sheet 120 are prefabricated, and the second half anti-sinking plate 152 can be docked with the first half anti-sinking plate 151, and the first half anti-sinking plate 151 will not affect the prefabrication of the lower large section first sheet 110 and the lower large section second sheet 120. This installation method can improve the installation efficiency of the anti-sinking plate 150.

[0073] S3, assembly steps of the upper section of the guide frame:

[0074] Reference Fig.13 and Fig.14 The guide frame upper section 200 is prefabricated as a whole by using a reverse manufacturing process, wherein the guide frame upper section 200 includes an upper large section platform 210 and a plurality of upper guide devices 220 arranged on the side of the upper large section platform 210. The guide frame upper section 200 is turned over, and then the first positioning cursor 221 of each upper guide device 220 is marked.

[0075] Specifically, take the center of any main leg tube as the measurement reference point, such as Fig.17 , taking the center of one of the main leg tubes as the measurement reference point, draw a reference line d, and then measure the positioning dimensions of the upper guide device 220 based on the two drawn reference lines d. The upper guide device 220 is a square structure, and the angle steels are placed along the diagonal lines. The first positioning cursor 221 is pasted at the intersection of the angle steels, and the positioning dimensions of each upper guide device 220 are measured based on the first positioning cursor 221. In addition, it is mentioned that, taking the first positioning cursor 221 as an example, the measurement operator can obtain the position of each first positioning cursor 221 through a total station. Similarly, the position of the second verticality cursor 123 is also obtained through a total station.

[0076] Use the first positioning cursor 221 as a reference to check whether the positioning of each upper guide device 220 is accurate. After passing the inspection, the upper section 200 of the guide frame and the lower large section platform 101 are positioned and docked, and temporarily fixed by positioning welding. The upper section 200 of the guide frame and the lower large section platform 101 are size-checked, and the welding of the two is completed after passing the inspection.

[0077] Since the upper section 200 of the guide frame needs to be butted against the lower section platform 101, the rooting piece 361 of the birdcage tooling needs to be installed after the second sheet 120 of the lower section and the first sheet 110 of the lower section are prefabricated. The rooting piece 361 is arranged at the upper and lower positions of the butt weld between the main leg tube 121 of the second sheet 120 of the lower section and the main leg tube 121 of the first sheet 110 of the lower section, such as Figure 6 shown.

[0078] S4, lower guide assembly steps:

[0079] After each lower guide device 160 is prefabricated, the second positioning cursor 161 of the lower guide device 160 is marked.

[0080] Reference Fig.15 , taking the first positioning cursor 221 as the installation reference, lift the lower guide device 160 so that the second positioning cursor 161 corresponds to the first positioning cursor 221, and adjust the lower guide device 160 according to the position deviation value between the center point of the second positioning cursor 161 and the center point of the first positioning cursor 211 until the positioning size of the lower guide device 160 is qualified; then, weld the lower guide device 160 to the lower large section platform 101.

[0081] like Fig.16 As shown, the lower large section platform 101 and the lower guide device 160 constitute the lower section 100 of the guide frame.

[0082] In this embodiment, the lower guide device 160 is installed according to the positioning dimensions of the upper guide device 220. Fig.18 As shown, the lower guide device 160 is a cylindrical structure, and the center position of the lower guide device 160 is calculated by measuring any three points of the outer diameter of the cylindrical structure, and the center position is the position of the second positioning cursor 161. When the lower guide device 160 is installed, the second positioning cursor 161 corresponds to the first positioning cursor 221 of the upper guide device 220, and the position deviation value of the two is ≤3mm to ensure the positioning size of the lower guide device 160.

[0083] It is understandable that in the embodiment of the present application, the three-pile guide frame is divided into the upper section 200 of the guide frame and the lower section 100 of the guide frame and constructed separately, and can be constructed separately at the same time to improve the construction efficiency. The upper guide device 220 is directly made on the upper large section platform 210 when the upper section 200 of the guide frame is constructed, and the first positioning cursor 221 of each upper guide device is marked. The construction of the lower section 100 of the guide frame is to first make the lower large section platform 201, and the lower large section platform is prefabricated using the first sheet 110 of the lower large section, the second sheet 120 of the lower large section, the truss parts 141 and the truss 130 between the sheets, and then constructed in a vertical middle assembly manner. After the upper section 200 of the guide frame and the lower large section platform 101 are closed, each lower guide device 160 is bulked and the second positioning cursor 161 of the lower guide device 160 is marked. In this way, the lower guide device 160 can be adjusted according to the position deviation value between the center point of the second positioning cursor 161 and the center point of the first positioning cursor 221 to ensure the coaxiality between the upper guide device and the lower guide device. In this embodiment, an appropriate assembly method is designed for the vertical middle assembly of the lower large section platform to ensure the manufacturing accuracy of the lower large section platform, and a reasonable installation time and positioning reference are designed for the lower guide device 160 to improve the construction efficiency of the three-pile guide frame while ensuring the accuracy of the upper guide device and the lower guide device.

[0084] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A method for vertically constructing a three-pile guide frame, characterized in that: The following steps are involved: Ground sample marking and pad arrangement steps: draw a ground sample line, install multiple guide frame pads on the foundation, level the upper end surface of each guide frame pad to ensure that the upper surface of each guide frame pad is in the same horizontal plane; The assembly steps of the lower large section platform are as follows: the lower large section platform is divided into a lower large section first sheet, a lower large section second sheet, a plurality of truss parts and a plurality of inter-sheet trusses for prefabrication, wherein a second verticality cursor for measuring verticality is pasted on the outer side of the lower large section second sheet; the lower large section second sheet is hoisted and erected and moved to the guide frame pad for positioning, the verticality of the lower large section second sheet is controlled based on the second verticality cursor, and the lower large section second sheet is fixed with a reinforcement assembly to ensure the stability of the lower large section second sheet after erection and installation; the inter-sheet trusses are hoisted and positioned, and the inter-sheet trusses are fixed. The first sheet of the lower large section is hoisted and erected and moved to the guide frame pad for positioning, a first verticality cursor for measuring verticality is pasted on the outer side of the first sheet of the lower large section, and the verticality of the first sheet of the lower large section is controlled based on the first verticality cursor, and the connecting weld between the other end of the inter-sheet truss and the first sheet of the lower large section is welded; the first sheet of the lower large section, the second sheet of the lower large section and the inter-sheet truss constitute the main structure of the lower large section; the truss parts are welded to the main structure of the lower large section to complete the assembly of the lower large section platform; The steps of assembling the upper section of the guide frame are as follows: the upper section of the guide frame is prefabricated as a whole by adopting the reverse manufacturing process, and the upper section of the guide frame includes an upper large section platform and a plurality of upper guide devices arranged on the side of the upper large section platform; the first positioning cursor of each upper guide device is marked, and the positioning of each upper guide device is checked to be accurate based on the first positioning cursor. After the inspection is qualified, the upper section of the guide frame and the lower large section platform are positioned and docked, and temporarily fixed by positioning welding. The upper section of the guide frame and the lower large section platform are inspected for size, and the welding of the two is completed after the inspection is qualified; Assembly steps of the lower guide device: after each lower guide device is prefabricated, mark the second positioning cursor of the lower guide device; use the first positioning cursor as the installation reference, lift the lower guide device, make the second positioning cursor correspond to the first positioning cursor, and adjust the lower guide device according to the position deviation value between the center point of the second positioning cursor and the center point of the first positioning cursor until the positioning size of the lower guide device is qualified; weld the lower guide device to the lower large section platform; the lower large section platform and the lower guide device constitute the lower section of the guide frame.

2. The method for vertically constructing a three-pile guide frame according to claim 1, characterized in that: The lower large section platform is divided into the lower large section first sheet and the lower large section second sheet in the long axis direction. The lower large section first sheet and the lower large section second sheet both include main leg tubes on both sides and a long axis truss structure located between the two main leg tubes. The lower large section platform is divided into the inter-sheet trusses in the short axis direction.

3. The method for vertically constructing a three-pile guide frame according to claim 2, characterized in that: In the assembly step of the upper section of the guide frame, the center of any main leg tube is used as a measurement reference point to measure the positioning dimensions of the upper guide device. The upper guide device is a square structure. The angle steels are placed along the diagonal line, and the first positioning cursor is pasted at the intersection of the angle steels. The positioning dimensions of each upper guide device are measured using the first positioning cursor as a reference.

4. The method for vertically constructing a three-pile guide frame according to claim 3, characterized in that: The lower guide device is installed according to the positioning dimensions of the upper guide device during installation. The lower guide device is a cylindrical structure. The center position of the lower guide device is calculated by measuring any three points of the outer diameter of the cylindrical structure. The center position is the position of the second positioning cursor. When the lower guide device is installed, the second positioning cursor corresponds to the first positioning cursor of the upper guide device, and the position deviation value between the two is ≤3mm to ensure the positioning dimensions of the lower guide device.

5. The method for vertically constructing a three-pile guide frame according to any one of claims 2 to 4, characterized in that: Adjustment components are provided on the upper part of the first sheet of the lower large section and on the left and right sides of the upper part of the second sheet of the lower large section. The adjustment components include two adjustment ears respectively arranged on the inner and outer sides. The adjustment ears are used to connect the steel wire adjustment rope to control the verticality of the first sheet of the lower large section or the second sheet of the lower large section.

6. The method for vertically constructing a three-pile guide frame according to claim 5, characterized in that: In the assembly step of the lower large section platform, the adjusting ears of the second sheet of the lower large section are respectively connected with a steel wire adjusting rope, and the other end of the steel wire adjusting rope is fixed by a hand winch. The position of each adjusting ear is adjusted by each hand winch, thereby adjusting the verticality of the second sheet of the lower large section; the hand winch and the steel wire adjusting rope are also used to adjust the verticality of the first sheet of the lower large section.

7. The method for vertically constructing a three-pile guide frame according to claim 6, characterized in that: After adjusting the verticality of the second sheet of the lower large section, the reinforcement assembly is installed, and the reinforcement assembly includes a plurality of reinforcement code plates directly or indirectly welded and fixed to the bottom of the main leg tube, and each of the reinforcement code plates is distributed circumferentially along the main leg tube; after each of the reinforcement code plates is welded, and each of the steel wire adjustment ropes connected to each of the adjustment ears is tightened, the second sheet of the lower large section is unhooked.

8. The method for vertically constructing a three-pile guide frame according to any one of claims 2 to 4, characterized in that: In the assembly step of the lower large section platform, when installing the inter-sheet trusses, after the inter-sheet trusses are positioned, temporary support components are used to reinforce and support the inter-sheet trusses. After the connection weld between the inter-sheet trusses and the first sheet of the lower large section reaches 40%, the inter-sheet trusses are unhooked.

9. The method for vertically constructing a three-pile guide frame according to any one of claims 2 to 4, characterized in that: After the connection weld between the inter-sheet truss and the first sheet of the lower large section reaches 40%, the first sheet of the lower large section is unhooked.

10. The method for vertically constructing a three-pile guide frame according to any one of claims 2 to 4, characterized in that: In the ground sample marking and pad arrangement steps, the guide frame pad is set based on the main leg tube, and the positioning mark of the main leg tube is marked on the guide frame pad. The guide frame pad is fixed to the foundation with expansion screws, and the foundation settlement is monitored during the assembly of the guide frame upper section and the guide frame lower section.

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