Attached openable steel pipe pile guide frame and construction method

Abstract

The invention discloses an attached steel pipe pile guide frame structure and a construction method of an overwater steel pipe pile, the attached steel pipe pile guide frame structure is used for guiding in the installation process of the overwater steel pipe pile, and the attached steel pipe pile guide frame structure comprises a truss body, a limiting device capable of being opened and closed and a jacking adjusting device. The deck on the barge can be adjusted, mounted and dismounted through the openable and closable hinge design; the truss main body is combined with the openable limiting device to form a channel below the steel pipe pile, and constraint on the steel pipe pile is applied or released on a plane through an openable hinge design; the jacking adjusting device acts between the broadside of the barge and the truss body, inclination caused by uneven load distribution of the barge is counteracted by adjusting the elongation of the jack, and the function of adjusting the perpendicularity of the attached type openable steel pipe pile guide frame is achieved.

Description

Technical Field

[0001] The present invention relates to the field of steel pipe pile guiding. More specifically, the present invention relates to an attached and openable steel pipe pile guiding frame and a construction method. Background Art

[0002] Existing trestle steel pipe pile guiding frames are usually applied to the completed trestle platform or the trestle structure under construction, and need to rely on the completed trestle main body or part as a construction platform. For example: the Chinese invention patent with the publication number CN209686402U discloses "a steel pipe pile guiding frame structure", which is used for guiding during the installation process of trestle steel pipe piles. Among them, the rear end of the overall structure along the longitudinal direction of the trestle is hinged on two Bailey frame groups behind the main beam of the trestle, and the overall structure can be leveled by adjusting the height of a pair of support legs. Another example: the Chinese invention patent with the publication number CN205975613U discloses "a steel trestle steel pipe pile construction guiding frame", which includes side beams, intermediate beams, and cross beams. The side beams, intermediate beams, and cross beams are fixedly connected. A plurality of reinforcing beams are arranged between the two cross beams, and diagonal beams are arranged between the cross beams and the intermediate beams. A steel plate is laid above the intermediate beams, diagonal beams, and cross beams to form an operation platform, and a plurality of square limiting holes are arranged on the operation platform. A steel plate is laid on the guiding frame as a construction platform. The application scenario of this kind of guiding frame is limited, and it can only be used after the upper structure is erected at the constructed steel pipe pile part, which restricts each other with other processes and cannot ensure continuous operation of the steel pipe piles.

[0003] In addition, when installing a guiding frame as a platform during the construction process of the trestle and then constructing subsequent steel pipe piles, it actually bears the load of large equipment when the trestle has not formed the final structure. For example, lifting equipment such as crawler cranes has large disturbances during the construction of steel pipe piles, and there are safety risks. Summary of the Invention

[0004] In order to achieve these and other advantages of the present invention, a preferred embodiment of the present invention provides an attached and openable steel pipe pile guiding frame, including

[0005] A truss main body, which is vertically arranged;

[0006] An openable and closable limiting device, including a pile-side limiting beam hinged to the truss main body through a pin shaft. There are two openable and closable limiting devices, which are respectively located at the top and bottom of the truss main body. The openable spaces of the two openable and closable limiting devices overlap vertically, and the two together are used to form a lowering channel for lowering the steel pipe pile;

[0007] A deck lifting lug, one side of which is hinged to the top of the truss main body, and the other side is welded to the barge deck;

[0008] The jacking adjustment device includes a horizontally arranged jack, whose fixed end is connected to the truss main body, and the telescopic end of the jack faces the barge side. By adjusting the elongation of the jack, the inclination of the barge is offset to adjust the verticality of the guiding frame.

[0009] Preferably, the truss main body includes upper longitudinal beams, lower longitudinal beams, cross beams, columns and diagonal braces. Among them, the upper longitudinal beams and the lower longitudinal beams are horizontally arranged. Two upper longitudinal beams are arranged in parallel, and they are connected by vertically arranged cross beams to form a frame structure. Two lower longitudinal beams are arranged in parallel, and they are connected by vertically arranged cross beams to form a frame structure. The columns are vertically arranged between the upper longitudinal beams and the lower longitudinal beams, and the diagonal braces are arranged in the middle of the rectangular frame composed of the upper main beams, the lower longitudinal beams and the columns.

[0010] Preferably, the two openable and closable limiting devices are respectively connected to the upper longitudinal beam and the lower longitudinal beam, and the fixed end of the jack is connected to the cross beam below.

[0011] Preferably, it includes the following steps:

[0012] S1. Hoist the guiding frame as a whole to the side of the barge deck, make the jack of the jacking adjustment device closely adhere to the barge side, and make the top longitudinal beam closely adhere to the barge deck;

[0013] S2. Insert the pin shaft into the openings of the upper longitudinal beam and the lower longitudinal beam and the barge deck lifting lugs to anchor the guiding frame on the deck;

[0014] S3. Use the pin shaft to connect the pile side limiting beam with the upper longitudinal beam and the lower longitudinal beam, and close the formed frame as the lowering channel for the construction of the steel pipe pile;

[0015] S4. Place the steel pipe pile into the lowering channel, adjust the elongation of the jack of the jacking adjustment device to offset the inclination of the hull, so that the steel pipe pile is vertical;

[0016] S5. Use the pile driving equipment to drive the steel pipe pile into the riverbed along the lowering channel;

[0017] S6. After the steel pipe pile is driven into the preset depth, remove the pin shaft at one end of the pile side limiting beam to release the constraint between the steel pipe pile and the barge guiding frame;

[0018] S7. The barge moves, the pile side limiting beam rotates along one end pin shaft, the barge is separated from the steel pipe pile, and the construction of the steel pipe pile is completed.

[0019] Preferably, the jack is controlled and connected to the control system, and the control system controls the elongation of the jack.

[0020] Preferably, the step S4 further includes a dynamic leveling control process:

[0021] Install a three-axis inclination sensor on the truss main body to monitor the inclination angle and direction of the guiding frame in real time;

[0022] Install a pressure sensor at the telescopic end of the jack to measure the jacking force of the jack in real time;

[0023] Establish the corresponding relationship between the hull tilt angle α and the elongation L of the jack: L = K·sinα, where K is a correction coefficient related to the hull size;

[0024] When the tilt sensor detects that the tilt angle exceeds the threshold, the control system automatically adjusts the elongation of the jack to control the perpendicularity deviation of the steel pipe pile 11 within 0.5°.

[0025] Preferably, in step S5, it further includes an intelligent monitoring step during the piling process:

[0026] Install a laser rangefinder in the lowering channel to measure the sinking speed and deviation of the steel pipe pile in real time;

[0027] Install a vibration sensor on the piling equipment to monitor the piling impact force and frequency.

[0028] The present invention has at least the following beneficial effects: The attached openable and closable steel pipe pile guide frame provided by the present invention is attached to the barge and constructs the steel pipe pile as the barge travels, effectively solving the defects of the traditional mode relying on the completed trestle part as the construction platform, such as discontinuous process, many process intersections, and great safety hazards. Relying on the barge as the construction platform and using the attached openable and closable steel pipe pile guide frame for construction, the water equipment only needs to be responsible for constructing the steel pipe pile and can operate continuously on the water; the water operation team and the trestle construction team operate in separate areas to avoid mutual interference between processes; the large piling equipment is far away from the trestle structure, reducing the disturbance to the trestle.

[0029] Other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the attached openable and closable steel pipe pile guide frame of the present invention;

[0031] Figure 2 Front view of the attached openable and closable steel pipe pile guide frame of the present invention;

[0032] Figure 3 Left view of the attached openable and closable steel pipe pile guide frame of the present invention;

[0033] Figure 4 Top view of the attached openable and closable steel pipe pile guide frame of the present invention.

[0034] Figure 5 Functional schematic diagram of the openable and closable limit device in the present invention;

[0035] Description of reference numerals: 1. upper longitudinal beam; 2. lower longitudinal beam; 3. cross beam; 4. column; 5. diagonal brace; 6. pile side limiting beam; 7. deck lifting lug; 8. limiting plate; 9. jack; 10. pin shaft; 11. steel pipe pile; 12. barge. Detailed implementation manners

[0036] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description in the specification.

[0037] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description of the present invention can be applied to other implementation manners, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present invention.

[0038] Those skilled in the art should understand that in the disclosure of the present invention, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0039] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be construed as limiting the quantity.

[0040] As Figures 1-5 shown, a preferred embodiment of the present invention provides an attached and openable steel pipe pile guide frame, including

[0041] a truss main body, which is vertically arranged;

[0042] an openable limiting device, including a pile side limiting beam 6 hinged to the truss main body through a pin shaft 10. There are two openable limiting devices, which are respectively located at the top and bottom of the truss main body. The openable spaces of the two openable limiting devices overlap vertically, and they are jointly used to form a lowering channel for the steel pipe pile 11 to be lowered;

[0043] a deck lifting lug 7, one side of which is hinged to the top of the truss main body, and the other side is welded to the deck of the barge 12;

[0044] The jacking adjustment device includes a horizontally arranged jack 9, a fixed end of which is connected to the truss body, and the telescopic end of the jack 9 is directed toward the side of the barge. The verticality of the guide frame is adjusted by adjusting the elongation of the jack to offset the tilt of the barge 12.

[0045] The truss body is the main supporting structure of the guide frame, and the vertical setting provides stability for the entire device. The openable and closable limit device is composed of a pile side limit beam hinged to the truss body through a pin, which can be flexibly opened and closed to achieve control of the steel pipe pile lowering channel. The two openable and closable limit devices are located at the top and bottom of the truss body respectively, and the openable and closable spaces overlap vertically.

[0046] The deck lug is used to connect the guide frame to the barge deck. One side is hinged to the top of the truss body and the other side is welded to the barge deck. The jacking adjustment device includes a horizontally set jack, which is used to adjust the verticality of the guide frame by adjusting the extension to offset the tilt of the barge.

[0047] The attached openable and closable steel pipe pile guide frame of the present invention can flexibly adapt to the needs of lowering the steel pipe piles by arranging an openable and closable limit device, and the two openable and closable limit devices overlap vertically to form a lowering channel, thereby ensuring the accuracy and stability of the lowering; the jack of the jacking adjustment device can effectively offset the inclination of the barge, ensure the verticality of the guide frame, and improve the accuracy and efficiency of the steel pipe pile construction.

[0048] In another technical solution, the truss body includes an upper longitudinal beam 1, a lower longitudinal beam 2, a cross beam 3, a column 4 and a diagonal brace 5, wherein the upper longitudinal beam 1 and the lower longitudinal beam 2 are horizontally arranged, the two upper longitudinal beams 1 are arranged in parallel, and the two are connected by a vertically arranged cross beam 3 to form a frame structure, the two lower longitudinal beams 2 are arranged in parallel, and the two are connected by a vertically arranged cross beam 3 to form a frame structure, the column 4 is vertically arranged between the upper longitudinal beam 1 and the lower longitudinal beam 2, and the diagonal brace 5 is arranged in the middle of the rectangular frame composed of the upper main beam 1, the lower longitudinal beam 2 and the column 4.

[0049] The truss main structure of the present invention has an upper longitudinal beam and a lower longitudinal beam connected by a cross beam to form a frame structure, and combined with vertically arranged columns and diagonal braces in the middle of the rectangular frame, the entire truss main structure is stable and has high strength, and can better withstand various forces during the lowering of the steel pipe piles, thereby ensuring the stability and reliability of the guide frame and extending its service life. At the same time, it also provides a solid foundation for the installation and operation of other components (such as an openable and closable limit device and a top support adjustment device).

[0050] In another technical solution, the two openable and closable limit devices are respectively connected to the upper longitudinal beam 1 and the lower longitudinal beam 2, and the fixed end of the jack is connected to the lower cross beam 3.

[0051] Another technical solution includes the following steps:

[0052] S1. Hoist the entire guiding frame to the side of the barge deck as a whole, making the jack of the jacking adjustment device closely adhere to the side of the barge, and the top longitudinal beam closely adhere to the 12th deck of the barge;

[0053] S2. Insert the pin shaft into the openings of the upper longitudinal beam 1 and the lower longitudinal beam 2 and the deck lifting lugs of the barge to anchor the guiding frame on the deck;

[0054] S3. Use the pin shaft to connect the pile side limiting beam 6 with the upper longitudinal beam 1 and the lower longitudinal beam 2, and the formed closed frame serves as the lowering channel for the construction of the steel pipe pile;

[0055] S4. Place the steel pipe pile into the lowering channel, and adjust the elongation of the jack 9 of the jacking adjustment device to offset the hull inclination, so that the steel pipe pile is vertical;

[0056] S5. Use the pile driving equipment to drive the steel pipe pile 11 along the lowering channel into the riverbed;

[0057] S6. After the steel pipe pile 11 is driven into the preset depth, remove one end pin shaft of the pile side limiting beam to release the constraint between the steel pipe pile and the barge guiding frame;

[0058] S7. The barge moves, the pile side limiting beam rotates along one end pin shaft, the barge is separated from the steel pipe pile, and the construction of the steel pipe pile is completed.

[0059] In another technical solution, the jack is controlled and connected to a control system, and the control system controls the elongation of the jack.

[0060] The step S4 further includes a dynamic leveling control process:

[0061] Install a three-axis inclination sensor on the main body of the truss to monitor the inclination angle and direction of the guiding frame in real time;

[0062] Install a pressure sensor at the telescopic end of the jack 9 to measure the jacking force of the jack in real time;

[0063] Establish the corresponding relationship between the hull inclination angle α and the jack elongation L: L = K·sinα, where K is a correction coefficient related to the hull size;

[0064] Among them, the three-axis inclination sensor is generally installed near the center of gravity of the main body of the truss or at a position that can sensitively reflect the overall inclination situation, such as the connection node between the upper longitudinal beam 1 and the column 4, to ensure that the inclination angle and direction of the guiding frame can be accurately monitored. Install a pressure sensor at the telescopic end of the jack 9, and the installation of the pressure sensor should ensure that it is consistent with the force direction of the jack to accurately measure the jacking force. K is a correction coefficient related to the hull size, which is obtained through the mechanical analysis of the hull structure and the fitting of experimental data.

[0065] The three-axis inclination sensor collects the inclination angle and direction data of the guide frame in real time and transmits them to the control system. When the inclination sensor detects that the inclination angle exceeds the threshold, the control system automatically adjusts the elongation of the jacks to control the perpendicularity deviation of the steel pipe pile 11 within 0.5°.

[0066] In another technical solution, in step S5, it further includes an intelligent monitoring step during the piling process:

[0067] Install a laser rangefinder in the lowering channel to measure the sinking speed and deviation of the steel pipe pile in real time;

[0068] Install a vibration sensor on the piling equipment to monitor the piling impact force and frequency.

[0069] In another technical solution, considering that in actual construction, the construction process is often affected by waves. In traditional construction, after the barge is tilted by the waves and then the jacks are adjusted manually, there may be a time delay, resulting in a large perpendicularity deviation of the steel pipe pile. In this application, through the wave compensation step, the wave height H and wave period T can be monitored in real time, and the elongation Δx of the jacks can be accurately calculated based on a series of formulas. Before the waves come, the elongation of the jacks is adjusted in advance so that the change in the jack thrust is opposite to the phase of the wave force. This means that before the wave acts on the barge and causes it to tilt, the jacks can react in advance to offset the impact of the waves, thus ensuring the verticality of the guide frame.

[0070] Assume that the wave period is T = 6s, and the elongation of the jacks is adjusted 3s before the waves come (roughly half a cycle, and the advance time is determined according to the phase relationship). Without wave compensation, the barge may tilt 1.5° under the action of the waves, resulting in a perpendicularity deviation of the steel pipe pile of 1.2°; with wave compensation, by accurately calculating and adjusting the jacks, the tilt of the barge can be controlled within 0.3°, and the perpendicularity deviation of the steel pipe pile can be controlled within 0.5° (meeting the construction accuracy requirements). The specific compensation process is as follows.

[0071] The dynamic leveling control process further includes a wave compensation step:

[0072] Install a wave height sensor on the top of the barge mast to monitor the wave height H in real time;

[0073] Install a wave period sensor on the top of the barge mast to monitor the wave period T obtained in real time;

[0074] Before the waves come, the elongation of the jacks 9 is adjusted in advance. There are multiple jacks 9, so that the change in the jack thrust is opposite to the phase of the wave force. The elongation Δx of the jacks 9 is calculated using formula 1:

[0075] Δx = F jack / K1 Formula 1

[0076] Among them, F jack is the jacking force of a single jack, and K1 is the linear stiffness coefficient of the jack, with the unit of N / m;

[0077] And the jacking force F of a single jack among them jack is calculated by the following formula 2,

[0078] F jack = M comp / nL Formula 2

[0079] Among them, M comp is the compensation moment of all jacks, n is the number of jacks, and L is the distance from the jack to the center of gravity of the barge;

[0080] And the compensation moment M among them comp is calculated by the following formula 3,

[0081] M comp = F mave ×h Formula 3

[0082] Among them, F ware is the lateral wave force, and h is the wave height;

[0083] And the lateral wave force F among them ware is calculated by the following formula 4:

[0084] F wave = 1 / 2ρC D Dv 2 +ρC m πD 2 a / 4 Formula 4

[0085] Among them, the lateral wave force F ware is the lateral force exerted by the wave on the hull or related structure, with the unit of N;

[0086] ρ: Seawater density (unit: kg / m 3 );

[0087] D: Draft of the hull (unit: m, meter), obtained directly from the ship design drawings or by a draft sensor installed on the hull;

[0088] C D : Drag coefficient (dimensionless);

[0089] C m : Inertia coefficient (dimensionless);

[0090] v: Lateral velocity of water particles (unit: m / s, meter per second), using the formula It is calculated that, where H is the wave height (unit: m), T is the wave period (unit: s), k = 2π / λ (λ is the wavelength, λgT 2 / 2π, g is the acceleration due to gravity, generally taken as 9.8 m / s 2 );

[0091] a: The lateral acceleration of water particles (unit: m / s 2 , meters per second squared), is calculated using the formula where v is the previously calculated lateral velocity of water particles and T is the wave period;

[0092] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated and described examples here.

Claims

1. An attached and separable steel pipe pile guide frame, characterized in that including a truss main body, which is vertically arranged; an openable and closable limiting device, including a pile-side limiting beam hinged to the truss main body through a pin shaft. There are two such openable and closable limiting devices, respectively located at the top and bottom of the truss main body. The openable spaces of the two openable and closable limiting devices overlap vertically, and they are jointly used to form a lowering channel for lowering the steel pipe pile; a deck lifting lug, one side of which is hinged to the top of the truss main body, and the other side is welded to the barge deck; a top support adjusting device, including a horizontally arranged jack, whose fixed end is connected to the truss main body. The telescopic end of the jack faces the barge side, and by adjusting the elongation of the jack, the inclination of the barge is offset to adjust the verticality of the guide frame.

2. The attachable and openable steel pipe pile guide frame according to claim 1, wherein The truss main body includes an upper longitudinal beam, a lower longitudinal beam, a cross beam, a column and a diagonal brace. Among them, the upper longitudinal beam and the lower longitudinal beam are horizontally arranged. Two upper longitudinal beams are arranged in parallel, and they are connected by a vertically arranged cross beam to form a frame structure. Two lower longitudinal beams are arranged in parallel, and they are connected by a vertically arranged cross beam to form a frame structure. The columns are vertically arranged between the upper longitudinal beam and the lower longitudinal beam, and the diagonal braces are arranged in the middle of the rectangular frame composed of the upper main beam, the lower longitudinal beam and the column.

3. The attachable and openable steel pipe pile guide frame according to claim 2, wherein, The two openable and closable limiting devices are respectively connected to the upper longitudinal beam and the lower longitudinal beam, and the fixed end of the jack is connected to the lower cross beam.

4. The construction method of the attached openable steel pipe pile guide frame according to claim 3, characterized in that, including the following steps: S1. Hoist the guide frame as a whole to the side of the barge deck, make the jack of the top support adjusting device closely contact with the barge side, and make the top longitudinal beam closely contact with the barge deck; S2. Insert the pin shaft into the openings of the upper longitudinal beam and the lower longitudinal beam and the barge deck lifting lug to anchor the guide frame on the deck; S3. Use the pin shaft to connect the pile-side limiting beam to the upper longitudinal beam and the lower longitudinal beam, and close the formed frame as the lowering channel for steel pipe pile construction; S4. Put the steel pipe pile into the lowering channel, adjust the elongation of the jack of the top support adjusting device to offset the inclination of the hull, so that the steel pipe pile is vertical; S5. Use the pile driving equipment to drive the steel pipe pile into the riverbed along the lowering channel; S6. After the steel pipe pile is driven to the preset depth, remove one end pin shaft of the pile-side limiting beam to release the constraint between the steel pipe pile and the barge guide frame; S7. The barge moves, the pile-side limiting beam rotates along one end pin shaft, the barge is separated from the steel pipe pile, and the construction of the steel pipe pile is completed.

5. The construction method of the attached openable and closable steel pipe pile guide frame according to claim 4, characterized in that, The jack is controlled and connected to a control system, and the control system controls the elongation of the jack.

6. The construction method of the attached openable steel pipe pile guide frame according to claim 4, characterized in that, The step S4 also includes a dynamic leveling control process: Install a three-axis inclination sensor on the truss main body to monitor the inclination angle and direction of the guide frame in real time; Install a pressure sensor on the telescopic end of the jack to measure the jacking force of the jack in real time; Establish the corresponding relationship between the hull inclination angle α and the jack elongation L: L = K·sinα, where K is a correction coefficient related to the hull size; When the inclination sensor detects that the inclination angle exceeds the threshold, the control system automatically adjusts the elongation of the jack to control the perpendicularity deviation of the steel pipe pile 11 within 0.5°.

7. The construction method of the attached openable steel pipe pile guide frame according to claim 5, characterized in that, In step S5, it also includes an intelligent monitoring step during the pile driving process: Install a laser rangefinder in the lowering channel to measure the sinking speed and deviation of the steel pipe pile in real time; Install a vibration sensor on the pile driving equipment to monitor the pile driving impact force and frequency.

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