Inverted bracket structure suitable for offshore boosting platform first pile type foundation
By adopting an inverted corbel structure in the pre-piled foundation of the offshore pressurization platform, the problem of unstable connection between steel pipe piles and jacket frame was solved, achieving reliable load transfer and simplifying construction, facilitating offshore construction and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-03-24
AI Technical Summary
The limited connection surfaces between the steel pipe piles and the jacket structure in the pre-pile foundation result in an unstable connection that is difficult to effectively resist the load of the offshore substation. Furthermore, the existing connection methods are complex, increasing construction difficulty and cost.
The structure employs an inverted bracket structure, which includes an inverted bracket between the guide frame and the steel pipe pile. It is fixed by welding and grouting, and combined with guide blocks, stiffening plates and pads to enhance the connection strength and rigidity. The overflow hole simplifies offshore welding operations.
It enables reliable load transfer of the jacket structure, simplifies the construction process, improves the reliability and convenience of connections, and reduces construction complexity and cost.
Smart Images
Figure CN224031631U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of ocean engineering, concretely relates to a reverse haunch structure suitable for the first pile type foundation of offshore booster platform. BACKGROUND
[0002] The offshore booster station is the heart of the whole offshore wind power project, bears the functions of wind farm booster, sending out and monitoring, and is an indispensable part of the offshore wind power project. The offshore booster station is composed of an upper block and a lower foundation, wherein the upper block is a device block area, and the lower foundation is a main component for resisting environmental load, generally composed of a jacket and a steel pipe pile.
[0003] The existing foundation of the offshore booster station is mostly a jacket foundation. The jacket foundation is divided into a first pile type and a second pile type according to the construction process, wherein the second pile type includes an inner pile type and a foot boot type. The first pile type foundation is a type of foundation in which pile foundation construction is prior to jacket construction. The first pile type jacket foundation has great differences from other foundation types, mainly in the connection between the steel pipe pile and the jacket body. The connection of the general foundation type is mainly coupled by high-strength grouting material, and the first pile type foundation not only needs high-strength grouting material, but also needs to separately set a reverse haunch structure, so that the jacket and the steel pipe pile are more stably coupled together, and the whole jointly resists the load borne by the offshore booster station, and guarantees the safe operation of the offshore booster station.
[0004] At the same time, the first pile type jacket foundation has great advantages in steel structure engineering quantity compared with the second pile type jacket foundation, and can effectively save the investment of engineering steel structure. However, the connection between the first pile type foundation steel pipe pile and the jacket has higher requirements. UTILITY MODEL CONTENTS
[0005] The main purpose of the utility model is to provide a reverse haunch structure suitable for the first pile type foundation of offshore booster platform, and to effectively solve the problems in the background art.
[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0007] A reverse haunch structure suitable for the first pile type foundation of offshore booster platform, comprising a jacket and a steel pipe pile, a reverse haunch is arranged between the jacket and the steel pipe pile, the reverse haunch is arranged on the jacket and welded, a plurality of guide blocks are arranged on the lower end of the jacket in the circumferential direction; the lower end of the jacket with the guide blocks is inserted into the steel pipe pile and fixed by grouting.
[0008] While adopting the above-mentioned technical solutions, the utility model can also adopt or combine the following technical solutions:
[0009] As a preferred technical scheme of the utility model: the inverted T leg includes upper ring plate, lower ring plate, the upper ring plate, lower ring plate between welding a plurality of first stiffening plate and second stiffening plate that are arranged evenly along the ring, the first stiffening plate is used for supporting upper ring plate, lower ring plate, the second stiffening plate is used for supporting the horizontal support of guide pipe support.
[0010] As a preferred technical scheme of the utility model: the upper ring plate is equipped with a plurality of openings, and the openings are used to arrange the horizontal support of the guide pipe support.
[0011] As a preferred technical scheme of the utility model: the lower ring plate is a circular ring.
[0012] As a preferred technical scheme of the utility model: at least two overflow holes are arranged on the lower ring plate.
[0013] As a preferred technical scheme of the utility model: the first stiffening plate is a rectangular steel plate with chamfering treatment.
[0014] As a preferred technical scheme of the utility model: the second stiffening plate is a rectangular steel plate.
[0015] As a preferred technical scheme of the utility model: the first stiffening plate, the second stiffening plate and the lower ring plate are respectively provided with a gasket.
[0016] As a preferred technical scheme of the utility model: the thickness of the gasket is 20-40mm.
[0017] The utility model provides a kind of inverted T leg structure suitable for offshore booster platform first pile foundation, with following beneficial effects: inverted T leg structure connects guide pipe support and steel pipe pile, reliably transmits the load on guide pipe support to steel pipe pile foundation, simple connection mode, avoid offshore welding operation, facilitate construction;The setting of reinforced plate enhances the overall strength and rigidity of inverted T leg structure;The setting of gasket ensures that the contact surface between steel pipe pile top and inverted T leg structure is smooth, guarantees the reliable force transmission of guide pipe support node and pile top connecting place;The setting of guide block facilitates offshore construction calibration positioning, is conducive to guaranteeing the reliability and convenience of guide pipe support and pile foundation connection. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the perspective drawing of inverted T leg structure suitable for offshore booster platform first pile foundation provided by the utility model;
[0019] Figure 2 It is partial sectional view;
[0020] Figure 3 It is the schematic view of gasket;
[0021] Figure 4 It is the schematic view of upper ring plate;
[0022] Figure 5 is a schematic view of a lower ring plate;
[0023] Figure 6 is a schematic view of a first stiffener plate;
[0024] Figure 7 is a schematic view of a second stiffener plate;
[0025] Figure 8 is a schematic view of a guide block;
[0026] In the figure: 1 - jacket; 2 - inverted bracket; 3 - steel pipe pile; 11 - guide block; 21 - upper ring plate; 22 - lower ring plate; 23 - first stiffener plate; 24 - second stiffener plate; 25 - pad plate. DETAILED DESCRIPTION
[0027] The utility model will be described in further detail with reference to the drawings and specific examples.
[0028] As Figures 1-8 shown, an inverted bracket structure suitable for a first pile type foundation of a sea booster platform, comprising a jacket 1 and a steel pipe pile 3, an inverted bracket 2 is arranged between the jacket 1 and the steel pipe pile 3, the inverted bracket 2 is arranged on the jacket 1 and welded, a plurality of guide blocks 11 are welded on the lower end of the jacket 1 in a uniform annular arrangement, the guide blocks 11 facilitate the lowering of the jacket, reduce the deviation of construction, and facilitate the correction of deviation in sea construction; the lower end of the jacket 1 with the guide blocks 11 is inserted into the steel pipe pile 3 and fixed by grouting.
[0029] The inverted bracket 2 comprises an upper ring plate 21 and a lower ring plate 22, a plurality of first stiffener plates 23 and second stiffener plates 24 are welded in a uniform annular arrangement between the upper ring plate 21 and the lower ring plate 22; the first stiffener plates 23 are used to support the upper ring plate 21 and the lower ring plate 22, and the second stiffener plates 24 are used to support the horizontal braces of the jacket 11.
[0030] The upper ring plate 21 is provided with a plurality of openings, and the openings are used to arrange the horizontal braces of the jacket 1.
[0031] The lower ring plate 22 is a circular ring.
[0032] The lower ring plate 22 is provided with at least two overflow holes, and the positions of the overflow holes avoid the first stiffener plates 23 and the second stiffener plates 24.
[0033] The first stiffener plates 23 are rectangular steel plates with chamfered corners, the second stiffener plates 24 are rectangular steel plates, and the sizes of the components of the first stiffener plates 23 and the second stiffener plates 24 can be adjusted according to specific needs.
[0034] The first stiffening plate 23, the second stiffening plate 24 and the lower ring plate 22 are respectively provided with a gusset plate 25, the gusset plate 25 is used for ensuring that the contact surface between the steel pipe pile 3 top and the inverted T-shaped leg 2 is flat, and force transmission between the jacket 1 node and the pile top connecting position is reliable.
[0035] The gusset plate 25 has a thickness of 20-40mm.
[0036] Specifically, the inverted T-shaped leg structure suitable for the first pile type foundation of the offshore booster platform is implemented in the following manner:
[0037] Firstly, the jacket 1 is penetrated through the inverted T-shaped leg 2 and welded on land, the welded parts include the upper ring plate 21 and the jacket 1, the lower ring plate 22 and the jacket 1, the first stiffening plate 23, the second stiffening plate 24 and the jacket 1, the upper ring plate 21 and the horizontal support of the jacket 1, the second stiffening plate 24 and the horizontal support of the jacket 1, then a plurality of guide blocks 11 are welded on the bottom of the jacket 1 and arranged uniformly along the ring direction, finally, the combination of the jacket 1 and the inverted T-shaped leg 2 is placed on the steel pipe pile 3 through hoisting, and grouting is performed through the overflow hole to fix the combination.
[0038] The above specific embodiment is used to explain and illustrate the utility model, and is only a preferred embodiment of the utility model, rather than limiting the utility model, and any modification, equivalent replacement, improvement and the like made to the utility model within the spirit and the protection scope of the claims of the utility model all fall into the protection scope of the utility model.
Claims
1. A inverted caltrap structure suitable for use with a pile supported foundation of an offshore platform, comprising a jacket (1) and a steel pipe pile (3), characterised in that: The inverted corbel (2) is arranged between the guide pipe frame (1) and the steel pipe pile (3), the inverted corbel (2) is arranged on the guide pipe frame (1) and welded, the lower end of the guide pipe frame (1) is welded with a plurality of guide blocks (11) arranged uniformly in the circumferential direction, the lower end of the guide pipe frame (1) with the guide blocks (11) is inserted into the steel pipe pile (3) and fixed by grouting.
2. The inverted caltrop structure suitable for use with a pile foundation of an offshore booster platform according to claim 1, characterized in that: The inverted corbel (2) comprises an upper ring plate (21) and a lower ring plate (22), a plurality of first stiffening plates (23) and second stiffening plates (24) are arranged uniformly in the circumferential direction and welded between the upper ring plate (21) and the lower ring plate (22), the first stiffening plates (23) are used for supporting the upper ring plate (21) and the lower ring plate (22), and the second stiffening plates (24) are used for supporting horizontal supports of the guide pipe frame (1).
3. The inverted caltrop structure suitable for use with a pile foundation of an offshore booster platform according to claim 2, characterized in that: The upper ring plate (21) is provided with a plurality of openings, and the openings are used for arranging the horizontal supports of the guide pipe frame (1).
4. The inverted caltrop structure suitable for use with a pile foundation of an offshore booster platform according to claim 2, characterized in that: The lower ring plate (22) is a circular ring.
5. The inverted caltrap structure suitable for use with a pile foundation of an offshore booster platform according to claim 2 or 4, characterized in that: At least two overflow holes are arranged on the lower ring plate (22).
6. The inverted caltrop structure suitable for use with a pile foundation of an offshore booster platform according to claim 2, characterized in that: The first stiffening plate (23) is a rectangular steel plate with chamfered treatment.
7. The inverted caltrop structure suitable for use with a pile foundation of an offshore booster platform according to claim 2, characterized in that: The second stiffening plate (24) is a rectangular steel plate.
8. The inverted caltrop structure suitable for use with a pile foundation of an offshore booster platform according to claim 2, characterized in that: The first stiffening plate (23) and the second stiffening plate (24) are respectively provided with a gasket (25) between the first stiffening plate (23) and the second stiffening plate (24) and the lower ring plate (22).
9. The inverted caltrop structure suitable for use with a monopile foundation of an offshore platform, according to claim 8, characterized in that: The thickness of the gasket (25) is 20-40 mm.