Anchor pile type jacket in deepwater bare rock area

Abstract

The utility model provides a deepwater bare rock area anchor pile type jacket which comprises a jacket body composed of three rows of steel pipe piles sequentially arranged from inside to outside, the steel pipe piles of the jacket body are arranged in a staggered mode, and the lower ends of the inner row of steel pipe piles and the lower ends of the outer row of steel pipe piles are fixed to concrete anchor piles. The middle row of steel pipe piles and the inner side row of steel pipe piles, the middle row of steel pipe piles and the outer side row of steel pipe piles, and all the steel pipe piles of the middle row of steel pipe piles are fixed through steel pipe parallel connection. The problem of inserting and driving the steel pipe piles under the deepwater bare rock geological condition is solved, an effective construction method is provided for erecting a deepwater foundation construction platform, a whole is assembled and welded in a field, the process time of field operation is shortened, potential safety hazards are reduced, the construction efficiency is improved, the construction safety is guaranteed, the popularization value is high, and the social benefit is good.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering construction, and in particular relates to an anchor pile type jacket in a deep-water bare rock area. Background Art

[0002] Cross-sea bridges are located in a marine environment and are large in scale, which places very high demands on technology. The design and construction of cross-sea bridges need to take into account the particularities of the marine environment, including wind resistance, wave resistance, corrosion resistance and other requirements to ensure the safety and durability of the bridges. In the existing technology, with the development of cross-sea bridges, their scale and form have become complex and diverse. The deep sea, bare rock and hard geology faced during their construction make the construction of cross-sea bridges difficult, especially the underwater foundation construction. In order to solve the problem that it is difficult to use pile-driving ships to directly drive steel pipe piles for water foundations, a deep-water bare rock area anchor pile jacket and its construction method were invented, which provides a construction method for the construction of foundation drilling platforms in deep-water bare rock areas. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes an anchor pile type jacket for deep water bare rock areas.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A deepwater bare rock area anchor pile type jacket, comprising a jacket consisting of three rows of steel pipe piles arranged sequentially from the inside to the outside, wherein the steel pipe piles of the jacket are staggered, the lower ends of the inner row of steel pipe piles and the lower ends of the outer row of steel pipe piles are fixed to concrete anchor piles, the middle row of steel pipe piles and the inner row of steel pipe piles, the middle row of steel pipe piles and the outer row of steel pipe piles, and the steel pipe piles in the middle row of steel pipe piles are fixed by steel pipe parallel connection; the spacing between two adjacent steel pipe piles in the inner row of steel pipe piles is greater than the spacing between two adjacent steel pipe piles in the outer row of steel pipe piles, and the spacing between two adjacent steel pipe piles in the outer row of steel pipe piles is greater than the spacing between two adjacent steel pipe piles in the middle row of steel pipe piles.

[0006] Furthermore, the diameter of the inner row of steel pipe piles is greater than that of the outer row of steel pipe piles, and the diameter of the outer row of steel pipe piles is greater than that of the middle row of steel pipe piles.

[0007] Furthermore, each steel pipe pile is fixed to the steel pipe parallel connection by welding.

[0008] Furthermore, the diameter of the concrete anchor piles at the lower ends of the inner row of steel pipe piles is greater than the diameter of the concrete anchor piles at the lower ends of the outer row of steel pipe piles.

[0009] Furthermore, the lower end surface of the middle row of steel pipe piles is lower than the lower end surface of the inner row of steel pipe piles.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] The present invention creates an anchor pile-type jacket by designing three rows of steel pipe piles of different diameters, which are connected to each other through steel pipe flat welding to form an integral truss. The large-diameter steel pipe piles can be designed according to the plane position and pile diameter of the bridge foundation pipe piles, and are used as steel casings for bored pile construction. The pile bottom is designed to a corresponding height according to the undulating height of the seabed surface, which solves the problem of driving steel pipe piles under deep-water bare rock geological conditions and provides an effective construction method for setting up deep-water foundation construction platforms. The steel pipe piles are welded together on site to reduce the process time of on-site operations, reduce safety hazards, improve construction efficiency, and ensure construction safety. It has great promotion value and good social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 Plans created for this invention;

[0014] Figure 2 Elevation drawing created for this invention. DETAILED DESCRIPTION

[0015] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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 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, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0017] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0019] A deepwater bare rock area anchor pile type jacket, such as Figure 1 and Figure 2 As shown, the jacket comprises three rows of steel pipe piles arranged sequentially from the inside to the outside. The steel pipe piles of the jacket are staggered, and the lower ends of the inner row of steel pipe piles and the lower ends of the outer row of steel pipe piles are fixed to concrete anchor piles 5. The middle row of steel pipe piles and the inner row of steel pipe piles, the middle row of steel pipe piles and the outer row of steel pipe piles, and the steel pipe piles in the middle row are fixed by steel pipe flat joints 4.

[0020] The diameter of the inner row of steel pipe piles is larger than that of the outer row of steel pipe piles, and the diameter of the outer row of steel pipe piles is larger than that of the middle row of steel pipe piles.

[0021] Each steel pipe pile and steel pipe parallel connection are welded and fixed.

[0022] The distance between two adjacent inner steel pipe piles 1 in the inner row of steel pipe piles is greater than the distance between two adjacent outer steel pipe piles 2 in the outer row of steel pipe piles, and the distance between two adjacent outer steel pipe piles in the outer row of steel pipe piles is greater than the distance between two adjacent middle steel pipe piles 3 in the middle row of steel pipe piles.

[0023] The diameter of the concrete anchor piles at the lower end of the inner row of steel pipe piles is greater than the diameter of the concrete anchor piles at the lower end of the outer row of steel pipe piles.

[0024] 6 The lower end surface of the middle row of steel pipe piles is lower than the lower end surface of the inner row of steel pipe piles.

[0025] A method for constructing an anchor-pile jacket in a deepwater bare rock area comprises the following steps:

[0026] S1. Process and weld the jacket into an integral truss, and transport the jacket as a whole to the pier location by a transport ship;

[0027] S2. Lift the jacket as a whole and lower it into place;

[0028] S3. Set up a temporary working platform on top of the jacket as an anchor pile construction platform;

[0029] S4. Drill holes in the inner row of steel pipe piles and the outer row of steel pipe piles, then clean the holes, lower the steel cage, and pour concrete underwater to form anchor piles, thereby forming an anchor-type jacket;

[0030] S5. Using the currently completed anchor pile jacket as the starting jacket construction pile foundation drilling platform, repeat the above steps S1 to S4 to complete the construction of other anchor pile jackets.

[0031] This invention utilizes three rows of steel pipe piles of varying diameters, arranged in a plum blossom pattern. These piles are welded together to form a monolithic truss. The larger-diameter piles are designed based on the planar position and diameter of the bridge foundation piles, serving as steel casings for bored pile construction. The pile bases are designed to correspond to the seabed's undulations. The jacket's monolithic truss structure is fabricated and welded together at a processing facility, then transported to the pier location and lowered into position using a large crane vessel. Once lowered into position, a temporary work platform is erected on top of the jacket, where concrete anchor piles are installed. These anchor piles securely connect the jacket to the seabed, ensuring a secure and reliable connection.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anchor-pile jacket for deepwater bare rock areas, characterized by: The jacket comprises three rows of steel pipe piles arranged from the inside to the outside. The steel pipe piles of the jacket are staggered. The lower ends of the inner row of steel pipe piles and the lower ends of the outer row of steel pipe piles are fixed to concrete anchor piles. The middle row of steel pipe piles and the inner row of steel pipe piles, the middle row of steel pipe piles and the outer row of steel pipe piles, and the steel pipe piles in the middle row are fixed by steel pipe parallel connection. The distance between two adjacent steel pipe piles in the inner row is greater than the distance between two adjacent steel pipe piles in the outer row, and the distance between two adjacent steel pipe piles in the outer row is greater than the distance between two adjacent steel pipe piles in the middle row.

2. The deepwater bare rock area anchored pile jacket according to claim 1, characterized in that: The diameter of the inner row of steel pipe piles is larger than that of the outer row of steel pipe piles, and the diameter of the outer row of steel pipe piles is larger than that of the middle row of steel pipe piles.

3. The deepwater bare rock area anchored jacket according to claim 1, characterized in that: Each steel pipe pile and steel pipe parallel connection are welded and fixed.

4. The deepwater bare rock area anchored pile jacket according to claim 1, characterized in that: The diameter of the concrete anchor piles at the lower end of the inner row of steel pipe piles is greater than the diameter of the concrete anchor piles at the lower end of the outer row of steel pipe piles.

5. The deepwater bare rock area anchored pile jacket according to claim 1, characterized in that: The lower end surface of the middle row of steel pipe piles is lower than the lower end surface of the inner row of steel pipe piles.

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