A complex offshore floating steel truss construction platform

Abstract

The application discloses a kind of complex sea area floating steel truss construction platform, it is related to bridge construction technology field, comprising: steel truss system, multiple pontoons, positioning system and multiple damping devices, multiple pontoons are located at the bottom of steel truss system, positioning system includes multiple cable collecting devices, multiple positioning steel cables and multiple concrete gravity anchors, multiple cable collecting devices are installed on steel truss system, each positioning steel cable is connected with one cable collecting device at one end, multiple concrete gravity anchors are thrown around steel truss drilling platform, and are connected with one cable collecting device by multiple positioning steel cables;Multiple damping devices are arranged in the side of steel truss system in ring direction interval, one damping device is movably connected with one positioning steel cable and applies force to it.The application does not need to use steel quantity larger guide pipe frame structure, reduces material cost, improves construction speed, and applies force to multiple positioning steel cables by multiple damping devices, avoids fatigue damage of positioning steel cable, reduces safety risk.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a floating steel truss construction platform for complex sea areas. Background Technology

[0002] For constructing large bridge pile foundations in bare rock geological conditions, a feasible method currently is to use the "jacket method" to build a construction platform. The specific construction process is as follows: the entire jacket of the drilling platform is transported to the pier location by barge; a large floating crane lowers the jacket to the seabed for positioning; after leveling, support piles are driven into the jacket columns; and finally, the superstructure of the platform is installed. This method has been applied in marine environments with water depths below 40m. Its main advantages are high overall platform rigidity, good stability, and the ability to resist large current and wave loads.

[0003] As water depth increases, the amount of steel required for the jacket structure increases significantly, leading to higher material costs. Furthermore, the increased steel consumption also leads to more construction procedures and a longer construction period, further increasing costs. Summary of the Invention

[0004] This invention provides a floating steel truss construction platform for complex sea areas to solve the technical problem that the construction cost of existing construction platforms using jacket structures to build bridge pile foundations on bare rock in the ocean increases with water depth.

[0005] This invention provides a floating steel truss construction platform for complex sea areas, comprising:

[0006] Steel truss system;

[0007] Multiple floating boxes are located at the bottom of the steel truss system to float the steel truss system on the sea surface;

[0008] A positioning system, the positioning system comprising:

[0009] - Multiple cable retrieval devices, wherein the multiple cable retrieval devices are installed on the steel truss system;

[0010] - Multiple positioning steel cables, one end of each positioning steel cable is connected to one of the cable take-up devices;

[0011] - Multiple concrete gravity anchors, the multiple concrete gravity anchors are deployed around the steel truss drilling platform, each of the concrete gravity anchors is connected to a cable take-up device via a positioning steel cable;

[0012] Multiple vibration damping devices are arranged circumferentially on the side of the steel truss system. Each vibration damping device is movably connected to a positioning steel cable and applies force to it so that it is always in a taut state.

[0013] In some embodiments, each of the vibration damping devices includes:

[0014] A connecting plate, the connecting plate being fixed to the side of the steel truss system;

[0015] The first adapter, one end of which is horizontally rotatably connected to the connecting plate;

[0016] The second adapter is vertically rotatably connected to the other end of the first adapter.

[0017] A triangular rod, wherein a right-angled side of the triangular rod is connected to the lower end of the second adapter, and a mass block is provided at the top away from the right-angled side, the mass block being located below the water surface;

[0018] A connecting steel rope is provided, one end of which is connected to the lower end of the second adapter, and the other end is connected to the middle of the corresponding positioning steel cable via a cable clamp.

[0019] In some embodiments, the steel truss system includes:

[0020] A truss structure, wherein the edges of the truss structure are provided with multiple first mounting areas, and the center of the truss structure is provided with multiple second mounting areas;

[0021] Multiple bridge decks are laid on top of the truss structure;

[0022] Multiple bottom flat connectors, each of which is respectively connected to the first mounting area and the second mounting area;

[0023] Multiple diagonal trusses are provided at the four corners of the truss structure.

[0024] In some embodiments, the floating steel truss construction platform for complex sea areas further includes:

[0025] Multiple anchor piles are inserted into the steel truss system, and the bottom of each anchor pile is used to anchor itself into the seabed rock strata.

[0026] In some embodiments, the floating steel truss construction platform for complex sea areas further includes:

[0027] Multiple guiding systems are respectively arranged in the first installation area. Each guiding system is provided with a guide cylinder and multiple guiding components arranged around the guide cylinder. The guide cylinder and multiple guiding components are used to guide the driving of the anchor pile.

[0028] In some embodiments, each of the guiding components includes:

[0029] There are four guide components, which are respectively located at the four corners of the first installation area.

[0030] In some embodiments, each of the guiding components includes:

[0031] A reaction seat is located in one corner of the first installation area;

[0032] The jack, the base of which is connected to the reaction seat;

[0033] A guide strut, one end of which is connected to the telescopic end of the jack;

[0034] The guide block is hinged to the other end of the guide support rod, and the side of the guide block facing away from the guide support rod is an arc-shaped surface.

[0035] In some embodiments, each of the anchor piles includes:

[0036] A steel anchor pile segment, the bottom of which is used to anchor the steel anchor pile segment in the seabed rock strata, and the bottom of the steel anchor pile segment is provided with a contour cut.

[0037] A concrete anchor pile segment, wherein the upper section of the concrete anchor pile segment is located inside the lower section of the steel anchor pile segment, and the lower section of the concrete anchor pile segment is anchored in the seabed rock strata;

[0038] A bracket, which is provided on the steel anchor pile section, is used to tighten the steel anchor pile section with a guide system.

[0039] In some embodiments, the floating steel truss construction platform for complex sea areas further includes:

[0040] The lifting system includes:

[0041] A pile-hanging beam, which is fixed to the top of the anchor pile;

[0042] Continuous jacks, wherein the continuous jacks are installed on the hanging pile beam;

[0043] The lifting cable has one end connected to the continuous jack and the other end connected to the steel truss system.

[0044] In some embodiments, the floating steel truss construction platform for complex sea areas further includes:

[0045] Multiple steel casing support piles are installed in the second installation area, and each steel casing support pile includes:

[0046] A steel casing, the bottom of which is used to anchor the casing in the seabed rock strata;

[0047] A support beam is provided, which passes through the top of the steel casing and is fixed at both ends to the steel truss system.

[0048] A limiting rod, one end of which is fixed to the steel casing, and the other end of which is supported by the steel truss system.

[0049] The beneficial effects of the technical solution provided by this invention include:

[0050] This invention provides a floating steel truss construction platform for complex sea areas. It comprises a steel truss system, multiple pontoons, a positioning system, and multiple vibration damping devices. Multiple pontoons are positioned at the bottom of the steel truss system to provide buoyancy. The positioning system uses multiple cable-retrieving devices, multiple positioning steel cables, and multiple concrete gravity anchors to position the steel truss system. Finally, the vibration damping devices apply force to the multiple positioning steel cables to keep them taut. On one hand, this invention eliminates the need for a large steel jacket structure, reducing material costs, increasing construction speed, and lowering construction costs. On the other hand, to improve the safety of the positioning system, the vibration damping devices apply force to the multiple positioning steel cables, reducing vibration under external forces and minimizing fatigue damage, thus reducing safety risks. Attached Figure Description

[0051] 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.

[0052] Figure 1 A top view of a floating steel truss construction platform for complex sea areas provided in an embodiment of the present invention;

[0053] Figure 2 A front view of a floating steel truss construction platform for complex sea areas provided in an embodiment of the present invention;

[0054] Figure 3 A schematic diagram of a vibration reduction device installed on a floating steel truss construction platform in complex sea areas, provided by an embodiment of the present invention;

[0055] Figure 4 This is a schematic diagram of the positioning system provided in an embodiment of the present invention;

[0056] Figure 5 A schematic diagram of a vibration damping device provided in an embodiment of the present invention;

[0057] Figure 6 Another schematic diagram of the vibration damping device provided in an embodiment of the present invention;

[0058] Figure 7 Another top view of a floating steel truss construction platform for complex sea areas provided in an embodiment of the present invention;

[0059] Figure 8 This is a schematic diagram of the structure of the pontoon provided in an embodiment of the present invention;

[0060] Figure 9 Provided for embodiments of the present invention Figure 8 A schematic diagram of the structure in the 1-1 direction;

[0061] Figure 10 This is a schematic diagram of the truss structure provided in an embodiment of the present invention;

[0062] Figure 11 This is a schematic diagram of the guiding system provided in an embodiment of the present invention;

[0063] Figure 12 A top view of the guidance system provided in an embodiment of the present invention;

[0064] Figure 13 This is a schematic diagram of the structure of the guide assembly provided in an embodiment of the present invention;

[0065] Figure 14 This is a schematic diagram of the anchor pile provided in an embodiment of the present invention;

[0066] Figure 15 This is a schematic diagram of the lifting system provided in an embodiment of the present invention;

[0067] In the picture:

[0068] 1. Steel truss system; 11. Truss structure; 111. First installation area; 112. Second installation area; 12. Bridge deck; 13. Bottom flat bracing; 14. Diagonal truss; 15. Top chord; 16. Bottom chord; 17. Vertical member; 18. Diagonal member;

[0069] 2. Floating box; 21. Bottom plate; 22. Top plate; 23. Side plate; 24. Bulkhead; 25. Manhole;

[0070] 3. Anchor pile; 31. Steel anchor pile segment; 311. Contouring cut; 32. Concrete anchor pile segment; 33. Corbel;

[0071] 4. Lifting system; 41. Hanging pile beam; 42. Continuous jacks; 43. Lifting cable;

[0072] 5. Steel casing support pile; 51. Steel casing; 52. Support beam; 53. Limiting rod;

[0073] 6. Positioning system; 61. Cable retrieval device; 62. Steel cable; 63. Concrete gravity anchor;

[0074] 7. Guiding system; 71. Guide cylinder; 72. Guiding assembly; 721. Reaction seat; 722. Jack; 723. Guide strut; 724. Guide block;

[0075] 8. Vibration damping device; 81. Connecting plate; 82. First adapter; 83. Second adapter; 84. Triangular rod; 85. Mass block; 86. Connecting steel rope; 87. Cable clamp. Detailed Implementation

[0076] 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.

[0077] This invention provides a floating steel truss construction platform for complex sea areas, which can solve the technical problem that the construction cost of existing construction platforms using jacket structures to build bridge pile foundations on bare rock in the ocean increases with water depth.

[0078] See Figure 1 , Figure 2 and Figure 3 As shown, this embodiment of the invention provides a floating steel truss construction platform for complex sea areas, including: a steel truss system 1, multiple floating boxes 2, a positioning system 6, and multiple vibration damping devices 8.

[0079] Multiple pontoons 2 are located at the bottom of the steel truss system 1 to float the steel truss system 1 on the sea surface.

[0080] See Figure 4 As shown, the positioning system 6 includes: multiple cable winding devices 61, multiple positioning steel cables 62, and multiple concrete gravity anchors 63.

[0081] Multiple cable retrieval devices 61 are installed on the steel truss system 1. One end of each positioning steel cable 62 is connected to a cable retrieval device 61. Multiple concrete gravity anchors 63 are thrown around the steel truss drilling platform. Each concrete gravity anchor 63 is connected to a cable retrieval device 61 through a positioning steel cable 62.

[0082] Multiple vibration damping devices 8 are arranged circumferentially on the side of the steel truss system 1. Each vibration damping device 8 is movably connected to a positioning steel cable 62 and applies force to it so that it is always in a taut state.

[0083] The floating steel truss construction platform for complex sea areas in this invention comprises a steel truss system, multiple pontoons, a positioning system, and multiple vibration damping devices. Multiple pontoons are positioned at the bottom of the steel truss system to provide buoyancy. The positioning system uses multiple cable-retrieving devices, multiple positioning steel cables, and multiple concrete gravity anchors to position the steel truss system. Finally, multiple vibration damping devices apply force to the multiple positioning steel cables to keep them taut. On one hand, this invention eliminates the need for a large steel jacket structure, reducing material costs, increasing construction speed, and lowering construction costs. On the other hand, to improve the safety of the positioning system, multiple vibration damping devices apply force to the multiple positioning steel cables, reducing vibration under external forces and minimizing fatigue damage, thus reducing safety risks.

[0084] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 5 and Figure 6 As shown, each vibration damping device 8 includes: a connecting plate 81, a first adapter 82, a second adapter 83, a triangular rod 84, a mass block 85, a connecting steel rope 86, and a cable clamp 87.

[0085] The connecting plate 81 is fixed to the side of the steel truss system 1. One end of the first adapter 82 is horizontally rotatably connected to the connecting plate 81, and the upper end of the second adapter 83 is vertically rotatably connected to the other end of the first adapter 82. A right-angled side of the triangular member 84 is connected to the lower end of the second adapter 83, and a mass block 85 is provided at the top away from the right-angled side, with the mass block 85 located below the water surface. One end of the connecting steel rope 86 is connected to the lower end of the second adapter 83, and the other end is connected to the middle of the corresponding positioning steel cable 62 via a cable clamp 87.

[0086] The vibration reduction principle of each vibration damping device 8 is as follows:

[0087] The mass block 85, positioning steel cable 62, and triangular rod 84 form a lever structure. Through the lever amplification principle, the tension in the middle of the positioning steel cable 62 is more than ten times the weight of the mass block 85, ensuring that the positioning steel cable 62 is always taut. Simultaneously, the rotating connection structure of the first adapter 82 and the second adapter 83 allows the vibration damping device 8 to adapt to the static and dynamic displacements of the positioning steel cable 62 in all directions. Furthermore, since the mass block 85 is located below the water surface, it can simultaneously apply inertial and damping forces to the positioning steel cable 62. These forces are amplified and transmitted to the positioning steel cable 62 through the lever, further enhancing its vibration damping effect.

[0088] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 7As shown, the steel truss system 1 may include: a truss structure 11 and multiple bridge decks 12. The edge of the truss structure 11 may be provided with multiple first installation areas 111. The shape of the first installation area 111 may be square. The first installation area 111 is a hollow area on the truss structure 11. In this embodiment, the shape of the truss structure 11 may be cuboid. A first installation area 111 may be provided at each of the four corners of the truss structure 11. At the same time, a first installation area 111 may be provided on each of the four sides of the truss structure 11. The first installation areas 111 on the opposite sides are staggered. A multiple second installation areas 112 may be provided at the center of the truss structure 11. From the top view of the truss structure 11, the center of the truss structure 11 refers to the position located in the middle area of ​​the top view. The multiple second installation areas 112 may be connected to each other. The first installation area 111 may be used for the insertion of anchor piles 3, and the second installation area 112 may be used for the insertion of steel casing support piles 5. Multiple bridge decks 12 can be laid on the top of the truss structure 11. The bridge decks 12 can form a platform on the top surface of the truss structure 11 for construction personnel to walk and work. By setting the first installation area 111 and the second installation area 112, the anchor piles 3 and the steel casing support piles 5 can be installed in the corresponding positions in an orderly manner, which can make the construction process orderly and stable, and can further speed up the construction and shorten the construction period.

[0089] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 7 As shown, the steel truss system 1 may further include: multiple bottom flat joints 13, which can be disposed between the first installation area 111 and the second installation area 112, and the bottom flat joints 13 can connect the first installation area 111 and the second installation area 112. In this embodiment, four bottom flat joints 13 may be provided, which are respectively disposed on the four sides of the truss structure 11. The shape of the bottom flat joints 13 may be a structure formed by the corners of two parallelograms connected to each other. The structural strength of the steel truss system 1 can be increased by providing bottom flat joints 13; multiple diagonal trusses 14. In this embodiment, four diagonal trusses 14 may be provided, which can be respectively disposed at the four corners of the truss structure 11. In other embodiments, other numbers of diagonal trusses 14 may be provided. The structural strength of the connection between the anchor pile 3 and the truss structure 11 can be strengthened by providing diagonal trusses 14.

[0090] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 8 and Figure 9As shown, the truss structure 11 may include: multiple main truss segments, which may be spaced apart along the transverse direction of the bridge; and multiple auxiliary truss segments, which may be spaced apart along the longitudinal direction of the bridge. The auxiliary truss segments may be fixed together with the main truss segments to form the truss structure 11. Both the main truss segments and the auxiliary truss segments may be composed of an upper chord 15, a lower chord 16, a vertical member 17, and a diagonal member 18. The upper chord 15, the lower chord 16, the vertical member 17, and the diagonal member 18 are all box girders. The main truss segments and the auxiliary truss segments may be connected by bevel welding of the upper chord 15 and the lower chord 16. The truss structure 11 is simple to assemble and has a stable structure.

[0091] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 8 and Figure 10 As shown, the pontoon 2 can be composed of four parts: a bottom plate 21, a top plate 22, side plates 23, and bulkhead plates 24, forming a sealed spatial structure. The bottom plate 21, top plate 22, side plates 23, and bulkhead plates 24 can all be composed of orthogonal irregular plate structures made of steel panels, I-beams, and structural steel. The pontoon 2 can form an independent sealed spatial structure at the bottom of the steel truss system 1, providing buoyancy for the steel truss system 1 to float in the water. The steel truss system 1 is prefabricated as a whole in the factory, and then the pontoon 2 is used to tow the steel truss system 1 to the pier location by self-floating. Optionally, the pontoons 2 are not interconnected, so that if a single pontoon 2 leaks and fails, it will not affect the buoyancy provided by adjacent pontoons 2. Access holes 25 are provided at the top plate 22 of each pontoon for convenient inspection and maintenance.

[0092] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 2 As shown, the complex sea area floating steel truss construction platform also includes: multiple anchor piles 3, which are inserted into the steel truss system 1, and the bottom of each anchor pile 3 is used to anchor to the seabed rock layer. Specifically, the bottom of the anchor pile 3 can be inserted from the top surface of the steel truss system 1, extend from the bottom surface of the steel truss system 1, and be anchored to the seabed rock layer.

[0093] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 and Figure 11 As shown, the steel truss system 1 may further include: multiple guide systems 7, which are respectively disposed in the first installation area 111. Each guide system 7 is provided with a guide cylinder 71 and multiple guide components 72 disposed above and around the guide cylinder 71. The guide cylinder 71 is disposed on the lower side of the first installation area 111. The guide cylinder 71 and the multiple guide components 72 are used to guide the driving of the anchor piles 3, which facilitates the installation of the anchor piles 3 and further speeds up the construction.

[0094] Further, see Figure 12 and Figure 13As shown, there are four guide components 72, which are respectively located at the four corners of the first installation area 111. Each guide component 72 includes: a reaction seat 721, a jack 722, a guide strut 723, and a guide block 724. The reaction seat 721 is located at one corner of the first installation area 111. The base of the jack 722 is connected to the reaction seat 721. One end of the guide strut 723 is connected to the telescopic end of the jack 722. The guide block 724 is hinged to the other end of the guide strut 723. The side of the guide block 724 facing away from the guide strut 723 is arc-shaped to facilitate the guidance of the anchor pile 3.

[0095] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 and Figure 14 As shown, the anchor pile 3 may include: a steel anchor pile segment 31, a concrete anchor pile segment 32, and a corbel 33.

[0096] The bottom of the steel anchor pile segment 31 is used for anchoring into the seabed rock layer. The bottom of the steel anchor pile segment 31 is provided with a contoured cutting notch 311 to facilitate the insertion of the steel anchor pile segment 31 into the rock, so as to adapt to the actual seabed slope. The upper section of the concrete anchor pile segment 32 is located inside the lower section of the steel anchor pile segment 31, and the lower section is located in the seabed rock layer. After the platform is raised to the design elevation, the bottom of the steel anchor pile segment 31 is constructed in batches to form the concrete anchor pile segment 32, ensuring that the bottom of the anchor pile 3 is fixed to the seabed rock layer. The bracket 33 is provided on the steel anchor pile segment 31 to secure the steel anchor pile segment 31 to one of the guide systems 7.

[0097] Specifically, when the platform is in a floating state, steel anchor pile sections 31 are driven into the seabed rock layer. After the platform is raised to the design elevation, brackets 33 are welded onto the steel anchor pile sections 31 to tighten the steel anchor pile sections 31 with a guide system 7. Specifically, the steel anchor pile sections 31 are connected to the guide cylinder 71 of the guide system 7 to transfer the vertical force of the drilling platform to the steel anchor pile sections 31. When the platform is in a floating state, the guide system 7 provides guidance for driving the steel anchor pile sections 31.

[0098] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 and Figure 15As shown, the deep-water bare rock offshore monolithic steel truss drilling platform may further include: a lifting system 4, which can be fixed to the top of the anchor piles 3 and can be connected to the steel truss system 1. In this embodiment, multiple lifting systems 4 may be provided, and the number of lifting systems 4 may be equal to the number of anchor piles 3. Each lifting system 4 is set on a corresponding anchor pile 3. After all the anchor piles 3 are inserted into the steel truss system 1, the lifting system 4 can be installed on the top of the anchor piles 3 and then connected to the steel truss system 1. The steel truss system 1 is then lifted from the water surface to the designed position through the lifting system 4.

[0099] See Figure 15 As shown, in some embodiments, the lifting system 4 may include: a hanging beam 41, which can be fixed to the top of the anchor pile 3. The hanging beam 41 may be a box girder structure. In this embodiment, the hanging beam 41 may be welded to the top of the anchor pile 3. In other embodiments, the hanging beam 41 may be fixed to the top of the anchor pile 3 by bolts; and continuous jacks 42, which may be provided on the hanging beam 41. In this embodiment, two continuous jacks 42 may be provided, and the two continuous jacks 42 may be respectively provided at both ends of the hanging beam 41. In other embodiments, other continuous jacks 42 may be provided. The system includes a number of continuous jacks 42 and lifting cables 43. One end of the lifting cable 43 can be connected to the continuous jacks 42, and the other end of the lifting cable 43 can be connected to the steel truss system 1. In this embodiment, two lifting cables 43 can be provided, and the two lifting cables 43 can be connected to two continuous jacks 42 respectively. In other embodiments, other numbers of lifting cables 43 can be provided. The lifting cables 43 can be driven to move upward by the continuous jacks 42, and the lifting cables 43 can pull the steel truss system 1 upward. The above structure can provide continuous and stable power to lift the steel truss system 1.

[0100] See Figure 1 , Figure 2 and Figure 7 As shown, in some embodiments, the deep-water bare rock offshore monolithic steel truss drilling platform may further include: multiple steel casing support piles 5, the bottom of which can be anchored in the seabed rock layer, and the top of which can be fixed to the steel truss system 1. The steel truss system 1 is supported on the sea surface by the steel casing support piles 5 and anchor piles 3, and drilling operations are carried out on the steel truss system 1. By setting the steel casing support piles 5, the span of the steel truss platform can be reduced, providing conditions for large drilling rigs to drill on the platform, while increasing the horizontal stiffness of the platform. The steel casing support piles 5 can also be inserted through the guide holes of the guide system 7.

[0101] The steel casing support pile 5 may include: steel casing 51, support beam 52 and limiting rod 53.

[0102] The bottom of the steel casing 51 can be anchored in the seabed rock strata, and then the steel casing 51 and the seabed rock strata are cast together with concrete. The support beam 52 can be a box girder structure. The support beam 52 can be inserted through the top of the steel casing 51. In this embodiment, two corresponding holes can be opened on the opposite side walls of the steel casing 51. The support beam 52 can be inserted through the two holes, and both ends of the support beam 52 can extend out of the steel casing 51. The support beam 52 is then fixed to the steel casing 51. Both ends of the support beam 52 can be fixed to the steel truss system 1 respectively. This can transfer the force generated when drilling holes in the steel truss system 1 to the steel casing 51. It can also tighten the steel casing 51 with the guide system 7, so that the steel truss system 1 and the steel casing 51 are fixed together in the horizontal direction. One end of the limiting rod 53 can be fixed to the steel casing 51, and the other end of the limiting rod 53 can be supported at the bottom of the steel truss system 1. Through the above structure, the steel truss system 1 can be fixed to the steel casing support pile 5, forming a horizontal constraint, effectively transmitting horizontal force and bending moment, so that the force generated when drilling on the steel truss system 1 is transmitted to the steel casing support pile 5, and the stability of the platform can be maintained when rotating the hole. In addition, the steel casing 51 is the steel casing of the bridge's formal pile foundation, which not only facilitates the platform construction, but also prepares for the subsequent bridge bored pile construction.

[0103] 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.

[0104] 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.

[0105] 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 floating steel truss construction platform for complex sea areas, characterized in that, include: Steel truss system (1); Multiple pontoons (2), the multiple pontoons (2) are located at the bottom of the steel truss system (1) to float the steel truss system (1) on the sea surface; Positioning system (6), the positioning system (6) includes: - Multiple cable take-up devices (61), the multiple cable take-up devices (61) are installed on the steel truss system (1); - Multiple positioning steel cables (62), one end of each positioning steel cable (62) is connected to one of the cable take-up devices (61); - Multiple concrete gravity anchors (63), the multiple concrete gravity anchors (63) are placed around the steel truss drilling platform, each of the concrete gravity anchors (63) is connected to a cable take-up device (61) by a positioning steel cable (62). Multiple vibration damping devices (8) are arranged circumferentially on the side of the steel truss system (1). One of the vibration damping devices (8) is movably connected to a positioning steel cable (62) and applies force to it so that it is always in a taut state. Each of the aforementioned vibration damping devices (8) includes: A connecting plate (81) is fixed to the side of the steel truss system (1); The first adapter (82) has one end that is horizontally rotatably connected to the connecting plate (81); The upper end of the second adapter (83) is vertically rotatably connected to the other end of the first adapter (82); A triangular rod (84) has a right-angled side connected to the lower end of the second adapter (83), and a mass block (85) is provided at the top away from the right-angled side, the mass block (85) being located below the water surface; A connecting steel rope (86) is provided, one end of which is connected to the lower end of the second adapter (83), and the other end is connected to the middle of the corresponding positioning steel cable (62) via a cable clamp (87).

2. The floating steel truss construction platform for complex sea areas as described in claim 1, characterized in that, The steel truss system (1) includes: A truss structure (11) has multiple first mounting areas (111) on its edges and multiple second mounting areas (112) at its center. Multiple bridge deck panels (12) are laid on top of the truss structure (11); Multiple bottom flat connectors (13) are respectively connected to the first mounting area (111) and the second mounting area (112). Multiple diagonal trusses (14) are provided at the four corners of the truss structure (11).

3. The floating steel truss construction platform for complex sea areas as described in claim 2, characterized in that, Also includes: Multiple anchor piles (3) are inserted into the steel truss system (1), and the bottom of each anchor pile (3) is used to anchor to the seabed rock strata.

4. The floating steel truss construction platform for complex sea areas as described in claim 3, characterized in that, Also includes: Multiple guide systems (7) are respectively disposed in the first installation area (111). Each guide system (7) is provided with a guide cylinder (71) and multiple guide components (72) disposed around the guide cylinder (71). The guide cylinder (71) and the multiple guide components (72) are used to guide the anchor pile (3) to be driven in.

5. The floating steel truss construction platform for complex sea areas as described in claim 4, characterized in that, Each of the aforementioned guidance systems (7) includes: The four guide components (72) are respectively disposed at the four corners of the first mounting area (111).

6. The floating steel truss construction platform for complex sea areas as described in claim 4, characterized in that, Each of the guide components (72) includes: A reaction seat (721) is located at one corner of the first mounting area (111); The jack (722) has its base connected to the reaction seat (721); A guide strut (723) has one end connected to the telescopic end of the jack (722); The guide block (724) is hinged to the other end of the guide support rod (723), and the side of the guide block (724) facing away from the guide support rod (723) is an arc-shaped surface.

7. The floating steel truss construction platform for complex sea areas as described in claim 4, characterized in that, Each of the anchor piles (3) includes: The bottom of the steel anchor pile segment (31) is used to anchor the steel anchor pile segment (31) in the seabed rock layer, and the bottom of the steel anchor pile segment (31) is provided with a contour cut (311). The upper section of the concrete anchor pile segment (32) is located inside the lower section of the steel anchor pile segment (31), and the lower section of the concrete anchor pile segment (32) is anchored in the seabed rock strata. Bracket (33), the bracket (33) is provided on the steel anchor pile section (31) for tightening the steel anchor pile section (31) with a guide system (7).

8. The floating steel truss construction platform for complex sea areas as described in claim 3, characterized in that, Also includes: Lifting system (4), the lifting system (4) includes: Hanging beam (41), the hanging beam (41) is fixed to the top of the anchor pile (3); Continuous jacks (42) are installed on the hanging beam (41). A lifting cable (43) is provided, one end of which is connected to the continuous jack (42), and the other end of which is connected to the steel truss system (1).

9. The floating steel truss construction platform for complex sea areas as described in claim 2, characterized in that, Also includes: Multiple steel casing support piles (5) are installed in the second installation area (112), and each steel casing support pile (5) includes: A steel casing (51), the bottom of which is used to anchor in the seabed rock strata; A support beam (52) is inserted through the top of the steel casing (51), and both ends of the support beam (52) are fixed to the steel truss system (1); A limiting rod (53) is provided, one end of which is fixed to the steel casing (51), and the other end of which is supported by the steel truss system (1).

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