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CN-121990125-A - Construction method of spliced composite steel plate bearing base station for ocean floating structure

CN121990125ACN 121990125 ACN121990125 ACN 121990125ACN-121990125-A

Abstract

The invention discloses a construction method of a spliced composite steel plate bearing base station for a marine floating structure, and relates to the technical field of marine engineering construction. According to the method, for a unit buoyancy tank, a connecting component, a limiting component and a buffering energy-absorbing component of a bearing base, factory standardized prefabrication is firstly carried out, then the unit buoyancy tank is transported to on-site modularized splicing construction, and unit buoyancy tank placement, buffering energy-absorbing component installation, connecting component assembly, limiting component installation and integral acceptance inspection are sequentially completed. The unit buoyancy tanks are made of stainless steel/carbon steel composite steel plates, the connecting assembly is used for realizing stable connection of the adjacent buoyancy tanks through the multiple anti-loosening structures, and the buffering energy-absorbing assembly can dissipate wave impact energy. The invention realizes the rapid installation of the bearing base station, reduces construction risk and cost, improves corrosion resistance, shock resistance and stability of the base station, and meets the construction requirements of the bearing base station of various ocean floating structures such as deep-open sea culture, offshore sightseeing and the like.

Inventors

  • WANG YOUTIAN
  • CHEN BOSHAN
  • ZHAO YINGFEI
  • DAI PENG
  • SUN HUIGAI

Assignees

  • 河北华策项目管理有限公司

Dates

Publication Date
20260508
Application Date
20260325

Claims (10)

  1. 1. The construction method of the spliced composite steel plate bearing base for the marine floating structure is characterized in that the bearing base comprises unit floating boxes (100), connecting assemblies (200), limiting assemblies (300) and buffering and energy absorbing assemblies (400), wherein the unit floating boxes (100) are surrounded by stainless steel/carbon steel composite steel plates to form a hollow buoyancy structure, at least three splicing grooves are uniformly formed in the circumferential direction, adjacent unit floating boxes (100) are butted through the splicing grooves to form a splicing cavity, the connecting assemblies (200) are arranged in the splicing cavity to connect the adjacent unit floating boxes (100), the limiting assemblies (300) are connected with the unit floating boxes (100) and the connecting assemblies (200) to limit the connecting assemblies (200) to deviate from the splicing cavity, and the buffering and energy absorbing assemblies (400) are movably mounted to the bottoms of the unit floating boxes (100) and are configured to generate relative displacement with the unit floating boxes (100) under the action of wave load so as to dissipate wave impact energy; the construction method comprises the following steps: S1, prefabricating in a factory, namely cutting, bending and welding a stainless steel/carbon steel composite steel plate to form a panel of a unit buoyancy tank (100), welding the panel into a closed hollow unit buoyancy tank (100), circumferentially processing at least three splicing grooves in the unit buoyancy tank (100), and prefabricating a connecting assembly (200), a limiting assembly (300) and a buffering energy-absorbing assembly (400); s2, on-site transportation and placement, namely transporting the prefabricated unit buoyancy tanks (100), the connecting assembly (200), the limiting assembly (300) and the buffering and energy absorbing assembly (400) to a sea construction sea area, placing a plurality of unit buoyancy tanks (100) according to the design size of a bearing base station, and enabling splicing grooves of adjacent unit buoyancy tanks (100) to be in butt joint to form a splicing cavity; S3, installing the buffering and energy-absorbing assembly, namely movably assembling the buffering and energy-absorbing assembly (400) to the bottom of the unit buoyancy tank (100) to finish the connection of the buffering and energy-absorbing assembly (400) and the unit buoyancy tank (100); s4, assembling the connecting assembly, namely installing the connecting assembly (200) into the splicing cavity, and enabling the adjacent unit buoyancy tanks (100) to be fixedly connected through the connecting assembly (200); S5, installing a limiting assembly, namely connecting the limiting assembly (300) between the unit buoyancy tank (100) and the connecting assembly (200) and limiting the connecting assembly (200) from falling out of the splicing cavity; S6, integrally checking and accepting, namely checking the splicing state of the unit buoyancy tanks (100), the fixing state of the connecting assemblies (200), the connecting state of the limiting assemblies (300) and the assembling state of the buffering and energy absorbing assemblies (400), and completing the site construction of the bearing base station after the checking and accepting are qualified.
  2. 2. The construction method of the spliced composite steel plate bearing base for the marine floating structure, which is disclosed in claim 1, is characterized in that the stainless steel/carbon steel composite steel plate comprises an outer stainless steel layer (101), a resin filling layer (102), a carbon steel layer (103) and an inner stainless steel layer (104), wherein the resin filling layer (102) is configured into a porous honeycomb structure, and in step S1, the stainless steel/carbon steel composite steel plate is subjected to cutting, bending and welding after the outer stainless steel layer (101), the resin filling layer (102), the carbon steel layer (103) and the inner stainless steel layer (104) are compounded into a whole through a hot-pressing compounding process.
  3. 3. The construction method of the spliced composite steel plate bearing base for the marine floating structure according to claim 1, wherein the connecting assembly (200) comprises connecting posts (202) and connecting lug plates (201) fixed at splicing grooves of the unit floating boxes (100), adjacent connecting lug plates (201) on the same unit floating box (100) are staggered in the height direction, connecting holes (203) matched with the connecting posts (202) are formed in the connecting lug plates (201), the connecting lug plates (201) are staggered and overlapped when the adjacent unit floating boxes (100) are placed in the step S2, and in the step S4, the connecting assembly (200) is assembled so that the connecting posts (202) are arranged in the connecting holes (203) of the overlapped connecting lug plates (201) in a penetrating mode, and the adjacent unit floating boxes (100) are connected.
  4. 4. The construction method of the spliced composite steel plate bearing base for the marine floating structure according to claim 3, wherein the connecting column (202) comprises a column body (204) and a limiting lug (205) arranged on the periphery of the column body (204), the connecting hole (203) comprises a center hole and a limiting groove arranged on the periphery of the center hole, in the step S4, when the connecting column (202) is assembled, the column body (204) is aligned with the center hole, the limiting lug (205) is aligned with the limiting groove and inserted into the connecting hole (203), and then the connecting column (202) is rotated to enable the limiting lug (205) to be staggered with the limiting groove, so that the axial limiting of the connecting column (202) and the connecting lug plate (201) is realized.
  5. 5. The construction method of the spliced composite steel plate bearing base for the marine floating structure, as set forth in claim 4, wherein a positioning column head (206) is integrally formed at the top end of the column body (204), a positioning groove matched with the positioning column head (206) is formed in the splicing groove, and in step S4, when the connecting column (202) is inserted into the connecting hole (203), the positioning column head (206) is clamped into the positioning groove until the connecting lug plate (201) is clamped between the limiting projection (205) and the positioning column head (206).
  6. 6. The construction method of the spliced composite steel plate bearing base for the marine floating structure according to claim 4 or 5, wherein the column (204) is configured as a threaded column, the column (204) is sleeved with a sliding sleeve (207) and a threaded sleeve (208), the limiting lug (205) is integrally formed on the surface of the sliding sleeve (207), the threaded sleeve (208) is matched with two ends of the sliding sleeve (207), and in the step S4, the axial position of the threaded sleeve (208) on the column (204) is adjusted after the connecting column (202) is assembled, the sliding sleeve (207) is driven to move, and the spacing between the limiting lug (205) and the positioning column head (206) is accurately matched with the actual height of the overlapped connecting lug plate (201).
  7. 7. The construction method of the spliced composite steel plate bearing base for the marine floating structure, as set forth in claim 5, wherein the limiting assembly (300) comprises a limiting frame clamped at the top of the unit floating box (100), the limiting frame comprises a limiting arc part circumferentially meshed with the positioning column head (206), and in step S5, the limiting assembly (300) is installed to clamp the limiting frame at the top of the unit floating box (100) so that the limiting arc part is circumferentially meshed with the positioning column head (206) to limit rotation of the connecting column (202).
  8. 8. The construction method of the spliced composite steel plate bearing base for the marine floating structure, which is disclosed in claim 7, is characterized in that the limiting frame comprises an outer frame body (301) and a reinforcing frame (302) fixed inside the outer frame body (301), the limiting arc part is arranged on the outer frame body (301), and in step S5, when the limiting frame is clamped at the top of the unit floating box (100), the fixing of the limiting frame is realized through the cooperation of the reinforcing frame (302) and the unit floating box (100).
  9. 9. The construction method of the spliced composite steel plate bearing base for the marine floating structure according to claim 1, wherein the buffering and energy absorbing assembly (400) comprises a porous plate (401) and at least one elastic telescopic rod (402) connecting the porous plate (401) with the unit floating box (100), a plurality of reinforcing ribs (105) are uniformly fixed at the bottom of the unit floating box (100), the plurality of reinforcing ribs (105) are enclosed around the porous plate (401), and in the step S3, the buffering and energy absorbing assembly (400) is installed so that two ends of the elastic telescopic rod (402) are respectively connected with the porous plate (401) and the bottom of the unit floating box (100), and a gap is reserved between the porous plate (401) and the bottom of the unit floating box (100).
  10. 10. The construction method of the spliced composite steel plate bearing base for the marine floating structure according to claim 9, wherein in the step S3, a gap between the porous plate (401) and the bottom of the unit buoyancy tank (100) is set to 80mm, so that the porous plate (401) is completely immersed in water and does not participate in providing buoyancy, and in the step S6, the degree of freedom of the movement of the porous plate (401) is checked during the whole acceptance, so that the porous plate (401) can generate relative displacement with the unit buoyancy tank (100) under the action of wave load.

Description

Construction method of spliced composite steel plate bearing base station for ocean floating structure Technical Field The invention belongs to the technical field of ocean engineering construction, and particularly relates to a construction method of a spliced composite steel plate bearing base for an ocean floating structure. Background As the development and utilization of ocean resources by humans gradually extend from offshore to deep-ocean regions, various kinds of ocean floating structures are increasingly used in the field of ocean engineering. The floating structures not only need to bear the weight and self-weight of the upper equipment, but also need to effectively resist the influence caused by complex and changeable ocean environmental loads such as gusts, billows, strong currents and the like. Under the background, the bearing base station serving as a core component of the whole structure directly relates to the safety and stability of the whole structure, and is a key place for guaranteeing the normal operation of the marine floating facility. The bearing base station of the traditional ocean floating structure mostly adopts an integral design scheme, and the matched construction method is developed around the integral structure. On the one hand, the integral bearing base station is required to be transported to the ocean construction sea after being integrally manufactured in a factory, the integral bearing base station has the characteristics of complex manufacturing process and large transportation difficulty due to the large size and heavy weight, the field installation process is complex, large-scale ocean hoisting equipment is required to be used, the engineering cost and time investment are greatly increased, the safety risk of offshore construction is improved, the construction requirement of a deep-open ocean floating structure is difficult to adapt even under the limitation of transportation and hoisting conditions, on the other hand, the integral bearing base station is difficult to effectively buffer wave impact after being molded due to the fact that the integral bearing base station is not matched with a standardized buffer energy absorption structure installation scheme, the base station is easy to generate large shaking amplitude under the wave action, the stability and the safety of the base station are influenced, the normal operation of upper equipment is seriously disturbed, and the working efficiency and the reliability of the whole ocean floating structure are further reduced. In view of the above, there is a need for a construction method of a spliced composite steel plate bearing base for a marine floating structure, so as to realize on-site rapid and standardized splicing of the bearing base, ensure structural stability of the spliced base, and meanwhile, standardize the installation flow of a buffering energy-absorbing component, ensure effective dissipation of wave impact energy and reduce shaking amplitude of the base. Disclosure of Invention The invention aims to provide a construction method of a spliced composite steel plate bearing base for a marine floating structure, which aims to solve the technical problems that the construction of the existing integral bearing base is difficult and high in cost, the construction of the spliced base lacks a standardized flow, the connection stability is poor and the installation of a buffering and energy absorbing component is not standard. In order to achieve the above purpose, the present invention provides the following technical solutions: The construction method of the spliced composite steel plate bearing base for the marine floating structure is characterized in that the bearing base comprises unit floating boxes (100), connecting assemblies (200), limiting assemblies (300) and buffering and energy absorbing assemblies (400), wherein the unit floating boxes (100) are surrounded by stainless steel/carbon steel composite steel plates to form a hollow buoyancy structure, at least three splicing grooves are uniformly formed in the circumferential direction, adjacent unit floating boxes (100) are butted through the splicing grooves to form a splicing cavity, the connecting assemblies (200) are arranged in the splicing cavity to connect the adjacent unit floating boxes (100), the limiting assemblies (300) are connected with the unit floating boxes (100) and the connecting assemblies (200) to limit the connecting assemblies (200) to deviate from the splicing cavity, and the buffering and energy absorbing assemblies (400) are movably mounted to the bottoms of the unit floating boxes (100) and are configured to generate relative displacement with the unit floating boxes (100) under the action of wave load so as to dissipate wave impact energy; the construction method comprises the following steps: S1, prefabricating in a factory, namely cutting, bending and welding a stainless steel/carbon steel composite steel plate to form