A combined water drilling platform system and its construction method

Abstract

The application discloses a combined water drilling platform system and a construction method thereof, and relates to the technical field of drilling platforms, which comprises a first drilling platform and a second drilling platform, the first drilling platform comprises a plurality of steel pipe piles and a Bailey beam structure, the plurality of steel pipe piles are inserted into a riverbed or a seabed, and the plurality of steel pipe piles are arranged around a pile cap, and the Bailey beam structure is installed on the plurality of steel pipe piles; the second drilling platform comprises a plurality of steel casings and an integral steel structure, the plurality of steel casings are inserted into the riverbed or the seabed, and the plurality of steel casings are arranged within the range of the pile cap, and the integral steel structure is installed on the plurality of steel casings. The whole water drilling platform system is divided into the first drilling platform and the second drilling platform, different use functions and use periods can be better adapted, platform engineering quantity is greatly reduced, the second drilling platform in the pile cap area does not need to be provided with temporary supporting steel pipe piles, construction procedures are more simple, and a construction period is shorter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling platforms, in particular to a combined water drilling platform system and a construction method thereof. BACKGROUND

[0002] With the rapid development of bridge construction, the increase in bridge span leads to the increase in stress and component size of bridge structure. Foundation construction is always a key and difficult project in bridge engineering construction, and is also a time limit control point in engineering construction.

[0003] The traditional water drilling platform system usually adopts a structure of steel pipe pile + Bailey beam. It has good adaptability for small-scale and shallow-water foundation, but has poor adaptability when the foundation scale is large or the water depth is deep. The main aspects are as follows:

[0004] First, the drilling platform has large engineering quantity. When the water depth is deep, the engineering quantity of steel pipe pile increases exponentially, which is extremely uneconomical.

[0005] Second, the drilling platform in the range of pile cap only serves the drilling pile construction. After the drilling pile construction is completed, the platform must be completely removed before cofferdam bottom sealing construction can be performed. The general service period of the platform in this area is 6-8 months, the installation period is generally 2-3 months, and the removal period is about 1 month. The installation and removal period is long, and there is a risk that a large number of steel pipe piles cannot be pulled out. SUMMARY

[0006] The embodiment of the present application provides a combined water drilling platform system and a construction method thereof, to solve the technical problems of large engineering quantity, long construction period and high cost of the existing water drilling platform system in the related art.

[0007] In a first aspect, a combined water drilling platform system is provided, comprising:

[0008] A first drilling platform, the first drilling platform comprising:

[0009] a plurality of steel pipe piles, the plurality of steel pipe piles being inserted into a river bed or a sea bed, and the plurality of steel pipe piles being arranged around a pile cap;

[0010] a Bailey beam structure, the Bailey beam structure being installed on the plurality of steel pipe piles;

[0011] A second drilling platform, the second drilling platform comprising:

[0012] a plurality of steel casings, the plurality of steel casings being inserted into the river bed or the sea bed, and the plurality of steel casings being arranged in the range of the pile cap;

[0013] - An integral steel structure, which is installed on multiple steel casings.

[0014] In some embodiments, the combined underwater drilling platform system further includes:

[0015] A steel casing guide frame is used to be erected on the Bailey beam structure to insert multiple steel casings.

[0016] In some embodiments, the steel casing guide frame includes:

[0017] A fixed truss, which is used to be erected on the Bailey beam structure;

[0018] A movable guide frame is provided on the fixed truss. The movable guide frame can slide and be fixed along the fixed truss. When the steel casing is driven, the movable guide frame guides the steel casing.

[0019] In some embodiments, the integral steel structure includes multiple longitudinal bridge steel sections and multiple transverse bridge steel sections connected together, with two longitudinal bridge steel sections and two transverse bridge steel sections forming a rectangular frame to be connected to a steel casing.

[0020] In some embodiments, each of the longitudinal and transverse bridge sections is provided with a stiffening plate at the connection point with the steel casing.

[0021] In some embodiments, the first drilling platform further includes:

[0022] A connecting rod system that connects two adjacent steel pipe piles.

[0023] In some embodiments, the first drilling platform further includes:

[0024] A distribution beam is provided on top of the multiple steel pipe piles, and the distribution beam is used to install the Bailey beam structure;

[0025] Bridge deck, which is disposed on the Bailey beam structure to form a ring passage around the abutment.

[0026] Secondly, a construction method for a combined underwater drilling platform system is provided, including the following steps:

[0027] Multiple steel pipe piles are driven around the pier cap in the riverbed or seabed, and Bailey beam structures are installed on the multiple steel pipe piles to complete the construction of the first drilling platform.

[0028] Based on the first drilling platform, multiple steel casings are driven into the riverbed or seabed along the pier area, and an integral steel structure is installed on the multiple steel casings to complete the construction of the second drilling platform.

[0029] In some embodiments, the construction of the second drilling platform, based on the first drilling platform, involves driving multiple steel casings along the pier area on the riverbed or seabed, and installing an integral steel structure on the multiple steel casings to complete the construction of the second drilling platform, including the following steps:

[0030] Install a steel casing guide frame on the first drilling platform, insert the steel casing located in the half area of ​​the side span of the pier cap, hoist the half-width integral steel structure of the side span to form the second drilling platform on the half side span, and carry out the drilling pile construction.

[0031] Continue to use the steel casing guide frame to install the steel casing in the 1 / 2 area of ​​the main span, hoist the integral steel structure of the half of the main span to form the second drilling platform in the 1 / 2 area of ​​the main span, and carry out the construction of bored piles to complete the construction of the second drilling platform.

[0032] In some embodiments, after the construction of the second drilling platform is completed, the method of driving multiple steel casings along the pier area on the riverbed or seabed based on the first drilling platform, installing an integral steel structure on the multiple steel casings, and then further including the following steps:

[0033] The cofferdam structure was hoisted and lowered to the design elevation after the bored pile construction was completed. The second drilling platform was then used as the bottom sealing platform for the cofferdam, and the cofferdam wall and bottom sealing concrete were poured to complete the cofferdam construction.

[0034] The beneficial effects of the technical solution provided by this invention include:

[0035] This invention provides a combined underwater drilling platform system and its construction method. The entire underwater drilling platform system is divided into a first drilling platform and a second drilling platform. The first and second drilling platforms adopt different structural forms. The first drilling platform adopts the original steel pipe pile and Bailey beam structure, while the second drilling platform adopts the steel casing and integral steel structure. This structure can better adapt to different functional and service life requirements, significantly reducing the amount of platform engineering. In addition, the second drilling platform in the pier area uses a steel casing as the support structure, eliminating the need for temporary support steel pipe piles, and thus eliminating the need for temporary steel pipe pile driving and extraction operations. This simplifies the construction process, shortens the construction period, and the large diameter and high load-bearing capacity of the steel casing allow it to adapt to greater water depths. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a top view of a combined underwater drilling platform system provided in an embodiment of the present invention;

[0038] Figure 2 This is a side view of a combined underwater drilling platform system provided in an embodiment of the present invention;

[0039] Figure 3 This is a top view of the steel casing guide frame provided in an embodiment of the present invention;

[0040] Figure 4 This is a side view of the steel casing guide frame provided in an embodiment of the present invention;

[0041] Figure 5 This is a top view of an integral steel structure provided in an embodiment of the present invention;

[0042] Figure 6 This is a first schematic diagram of a construction method for a combined underwater drilling platform system provided in an embodiment of the present invention;

[0043] Figure 7 A second schematic diagram illustrating a construction method for a combined underwater drilling platform system provided in an embodiment of the present invention;

[0044] Figure 8 A third schematic diagram illustrating a construction method for a combined underwater drilling platform system provided in an embodiment of the present invention;

[0045] Figure 9 The fourth schematic diagram is a construction method for a combined underwater drilling platform system provided in an embodiment of the present invention;

[0046] Figure 10 The fifth schematic diagram of a construction method for a combined underwater drilling platform system provided in an embodiment of the present invention;

[0047] Figure 11 The sixth schematic diagram of a construction method for a combined underwater drilling platform system provided in an embodiment of the present invention;

[0048] Figure 12 The seventh schematic diagram of a construction method for a combined underwater drilling platform system provided in an embodiment of the present invention;

[0049] In the picture:

[0050] 1. First drilling platform; 11. Steel pipe piles; 12. Bailey bridge structure; 13. Connecting rod system; 14. Distribution beam; 15. Bridge deck;

[0051] 2. Second drilling platform; 21. Steel casing; 22. Integral steel structure; 221. Longitudinal bridge steel; 222. Transverse bridge steel; 223. Support stiffening plate;

[0052] 3. Steel casing guide frame; 31. Fixed truss; 32. Movable guide frame;

[0053] 4. Cofferdam structure;

[0054] 5. Gondola. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] This invention provides a combined underwater drilling platform system that solves the technical problems of existing underwater drilling platform systems, such as large engineering workload, long construction period, and high cost.

[0057] See Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a combined underwater drilling platform system, including: a first drilling platform 1 and a second drilling platform 2.

[0058] The first drilling platform 1 includes: multiple steel pipe piles 11 and Bailey beam structure 12. The multiple steel pipe piles 11 are inserted into the riverbed or seabed and are arranged around the foundation. The Bailey beam structure 12 is installed on the multiple steel pipe piles 11.

[0059] The second drilling platform 2 includes multiple steel casings 21 and an integral steel structure 22. The multiple steel casings 21 are inserted into the riverbed or seabed and are arranged within the support platform area. The integral steel structure 22 is mounted on the multiple steel casings 21. Optionally, the integral steel structure 22 can be supported on the multiple steel casings 21 by casing brackets.

[0060] Specifically, see Figure 1 As shown, if the foundation size is large, the first drilling platform 1 can divide the foundation into two areas, and the corresponding second drilling platform 2 is also divided into two areas.

[0061] The combined underwater drilling platform system in this embodiment of the invention divides the entire system into a first drilling platform and a second drilling platform. The first and second drilling platforms employ different structural forms: the first drilling platform uses a steel pipe pile and Bailey beam structure, while the second drilling platform uses a steel casing and an integral steel structure. This design better adapts to different functional and lifecycle requirements, significantly reducing the amount of platform engineering work. Furthermore, the second drilling platform in the pier area uses a steel casing as its support structure, eliminating the need for temporary support steel pipe piles and thus eliminating the need for driving and removing temporary steel pipe piles. This simplifies the construction process, shortens the construction period, and the large diameter and high load-bearing capacity of the steel casing allow it to adapt to greater water depths.

[0062] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 3 and Figure 8 As shown, the combined underwater drilling platform system also includes a steel casing guide frame 3, which is mounted on the Bailey beam structure 12 to drive multiple steel casings 21. The steel casing guide frame 3 moves on the first drilling platform 1, continuously driving the steel casings 21 until... Figure 1 After all the steel casings 21 in the two bearing areas of the first drilling platform 1 are driven in, the integral steel structure 22 is installed on the multiple steel casings 21 to complete the construction of the second drilling platform 2.

[0063] Further, see Figure 4 As shown, the steel casing guide frame 3 includes a fixed truss 31 and a movable guide frame 32. The fixed truss 31 is used to support the Bailey beam structure 12. The movable guide frame 32 is mounted on the fixed truss 31 and can slide and be fixed along the fixed truss 31. When the steel casing 21 is driven in, the movable guide frame 32 guides the steel casing 21. The structure is simple and the construction is convenient. Figure 1 As shown, since the first drilling platform 1 divides the foundation into two areas, two steel casing guide frames 3 can be set up, and the two areas can be constructed simultaneously, improving construction efficiency.

[0064] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 5As shown, the integral steel structure 22 includes multiple connected longitudinal bridge-oriented steel sections 221 and multiple transverse bridge-oriented steel sections 222. Two longitudinal bridge-oriented steel sections 221 and two transverse bridge-oriented steel sections 222 form a rectangular frame to connect with a steel casing 21. The spacing between two adjacent longitudinal bridge-oriented steel sections 221 or two adjacent transverse bridge-oriented steel sections 222 can be increased by 600-800mm based on the outer diameter of the steel casing 21. Depending on the hoisting capacity, the integral steel structure 22 can be divided into several large sections for installation. The integral steel structure 22 can be factory-manufactured and hoisted in large sections, resulting in high construction efficiency and better construction quality.

[0065] Further, see Figure 5 As shown, each of the longitudinal bridge steel sections 221 and each of the transverse bridge steel sections 222 is provided with a support stiffening plate 223 at the connection with the steel casing 21 to ensure the structural strength of the connection.

[0066] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 2 As shown, the first drilling platform 1 further includes: multiple connecting rod systems 13, one of the connecting rod systems 13 connecting two steel pipe piles 11 to ensure the structural strength and stability of the multiple steel pipe piles 11.

[0067] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 2 As shown, the first drilling platform 1 further includes a distribution beam 14 and a bridge deck 15. The distribution beam 14 is located on top of the multiple steel pipe piles 11 and is used to install the Bailey bridge structure 12. The bridge deck 15 is located on the Bailey bridge structure 12 to form a ring passage around the pier cap, facilitating construction by workers.

[0068] This invention provides a construction method for a combined underwater drilling platform system, comprising the following steps:

[0069] Multiple steel pipe piles 11 are driven into the riverbed or seabed around the foundation, and Bailey beam structure 12 is installed on the multiple steel pipe piles 11 to complete the construction of the first drilling platform 1.

[0070] Specifically, see Figure 6 and Figure 7 As shown, multiple steel pipe piles 11 are driven into the riverbed or seabed around the pier cap, and the steel pipe piles 11 are connected by a connecting rod system 13. A distribution beam 14 and a Bailey beam structure 12 are installed sequentially on the top of the steel pipe piles 11, and a bridge deck 15 is installed on the Bailey beam structure 12 to form a ring passage around the pier cap.

[0071] Based on the first drilling platform, multiple steel casings 21 are driven into the riverbed or seabed along the pier area, and an integral steel structure 22 is installed on the multiple steel casings 21 to complete the construction of the second drilling platform 2.

[0072] Specifically, the construction of the second drilling platform 2, based on the first drilling platform, involves driving multiple steel casings 21 along the bearing platform area on the riverbed or seabed, and installing an integral steel structure 22 on the multiple steel casings 21 to complete the construction, including the following steps:

[0073] A steel casing guide frame 3 is installed on the first drilling platform 1. Steel casings 21 located in the half-span area of ​​the pier cap are driven in. A crane barge 5 can be used to lift and drive the steel casings 21. The steel casings 21 include supporting and non-supporting steel casings. The half-span integral steel structure 22 is hoisted to form the second drilling platform 2 in the half-span area, and bored pile construction is then carried out. (See attached...) Figure 8-9 As shown.

[0074] Continue using the steel casing guide frame 3 to install the steel casing 21 in the half-area of ​​the main span, hoist the integral steel structure 22 of the half-width of the main span to form the second drilling platform 2 in the half-area of ​​the main span, and carry out bored pile construction to complete the construction of the second drilling platform 2. See [link to documentation]. Figure 10 and Figure 1 As shown. By constructing the steel casing 21 first and then hoisting the integral steel structure 22, the insertion of the steel casing 21 and the manufacturing of the integral steel structure 22 can be carried out simultaneously. The steel casing guide frame 3 includes a fixed truss 31 and a movable guide frame 32. The fixed truss 31 is erected on the Bailey beam structure 12, and the movable guide frame 32 is located on the fixed truss 31. The movable guide frame 32 can slide and be fixed along the fixed truss 31. When the steel casing 21 is inserted, the movable guide frame 32 guides the steel casing 21. The steel casing guide frame 3 can be moved once to meet the need for inserting multiple steel casings 21, thus improving the insertion efficiency of the steel casing 21.

[0075] The construction method of the combined underwater drilling platform system in this embodiment of the invention divides the entire underwater drilling platform system into a first drilling platform and a second drilling platform. The first and second drilling platforms adopt different structural forms. The first drilling platform adopts a structure of steel pipe piles and Bailey beams, while the second drilling platform adopts a structure of steel casing and integral steel structure. This structure can better adapt to the requirements of different functions and service cycles, and significantly reduce the amount of platform engineering. In addition, the second drilling platform in the pier area uses a steel casing as the support structure of the second drilling platform, eliminating the need for temporary support steel pipe piles, and thus eliminating the need for temporary steel pipe pile driving and extraction operations. The construction process is simpler, and the large diameter and high load-bearing capacity of the steel casing can adapt to greater water depths.

[0076] As an optional implementation, in one embodiment of the invention, after the construction of the second drilling platform 2 is completed, the method of driving multiple steel casings 21 along the bearing platform range on the riverbed or seabed based on the first drilling platform, installing an integral steel structure 22 on the multiple steel casings 21, and completing the construction of the second drilling platform 2 further includes the following steps:

[0077] Hoist cofferdam structure 4. After the bored pile construction is completed, cofferdam structure 4 will be lowered to the design elevation by filling it with water. Using the second drilling platform 2 as the cofferdam bottom sealing platform, the cofferdam wall chambers and bottom sealing concrete will be poured to complete the cofferdam construction. The second drilling platform 2 will be dismantled, while the first drilling platform 1 will be retained as a passageway for the main pier and superstructure construction. See also... Figure 11-12 As shown, the cofferdam structure 4 can be lifted using a gondola 5.

[0078] This invention allows for the large-segment hoisting of the cofferdam structure 4 after the partial dismantling of the outer perimeter of the second drilling platform 2. In other words, after the bored pile construction is completed, the second drilling platform 2 can be directly used as the cofferdam bottom sealing platform, eliminating the need for a separate cofferdam bottom sealing platform; thus, the same structure achieves multiple functions.

[0079] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0080] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0081] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.

Claims

1. A method of constructing a modular offshore drilling platform system, characterized by, The combined water drilling platform system comprises: A first drilling platform (1) comprising: a plurality of steel pipe piles (11) inserted into a riverbed or seabed and arranged around a pile cap; a Bailey beam structure (12) installed on the plurality of steel pipe piles (11); A second drilling platform (2) comprising: a plurality of steel casings (21) inserted into a riverbed or seabed and arranged within the range of the pile cap; an integrated steel structure (22) installed on the plurality of steel casings (21), the integrated steel structure (22) comprising a plurality of longitudinal bridge steels (221) and a plurality of transverse bridge steels (222) connected to each other, two longitudinal bridge steels (221) and two transverse bridge steels (222) forming a rectangular frame to be connected to one steel casing (21), and each longitudinal bridge steel (221) and each transverse bridge steel (222) being provided with a fulcrum stiffener (223) at the connection with the steel casing (21); a steel casing guide frame (3) for erection on the Bailey beam structure (12) to insert and drive the plurality of steel casings (21), the steel casing guide frame (3) moving on the first drilling platform (1) to continuously insert and drive the steel casings (21) until the steel casings (21) in the two pile cap areas within the first drilling platform (1) are all inserted and driven, and then the integrated steel structure (22) is installed on the plurality of steel casings (21) to complete the construction of the second drilling platform (2); The steel casing guide frame (3) comprises: a fixed truss (31) for erection on the Bailey beam structure (12); a movable guide frame (32) provided on the fixed truss (31), the movable guide frame (32) being slidable and fixed on the fixed truss (31), and guiding the steel casings (21) when the steel casings (21) are inserted and driven; The construction method comprises the following steps: inserting and driving a plurality of steel pipe piles (11) around a pile cap on a riverbed or seabed, installing a Bailey beam structure (12) on the plurality of steel pipe piles (11), and completing the construction of a first drilling platform (1); inserting and driving a plurality of steel casings (21) within the range of the pile cap on the riverbed or seabed based on the first drilling platform, installing an integrated steel structure (22) on the plurality of steel casings (21), and completing the construction of a second drilling platform (2); hoisting a cofferdam structure (4), after the construction of the drilled piles is completed, removing part of the second drilling platform (2), sinking the cofferdam structure (4) to the designed elevation by filling with water, taking the second drilling platform (2) as a cofferdam bottom sealing platform, pouring cofferdam wall and bottom sealing concrete, and completing the construction of the cofferdam.

2. The construction method according to claim 1, wherein The first drilling platform is used as a basis to insert a plurality of steel casings (21) along the range of the bearing platform on the riverbed or seabed, install an integrated steel structure (22) on the plurality of steel casings (21), complete the construction of the second drilling platform (2), and include the following steps: A steel casing guide frame is installed on the first drilling platform (1), steel casings (21) located in the 1 / 2 region of the bearing platform are inserted, the integrated steel structure (22) of the half span of the side span is hoisted, the 1 / 2 second drilling platform (2) of the side span is formed, and drilling pile construction is performed; The steel casing guide frame is continued to be used to install the steel casings (21) in the 1 / 2 region of the main span, the integrated steel structure (22) of the half span of the main span is hoisted, the 1 / 2 second drilling platform (2) of the main span is formed, and drilling pile construction is performed, and the construction of the second drilling platform (2) is completed.

3. The construction method according to claim 1, wherein The first drilling platform (1) further includes: A connecting rod system (13) connects two adjacent steel pipe piles (11).

4. The construction method according to claim 1, wherein The first drilling platform (1) further includes: A distribution beam (14) is arranged on the top of the plurality of steel pipe piles (11), and the distribution beam (14) is used to install the Bailey beam structure (12); A bridge deck (15) is arranged on the Bailey beam structure (12) to form a ring-shaped passage around the bearing platform.

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