Bridge ship collision prevention active protection device and use method thereof

Abstract

The invention discloses a bridge ship-collision-prevention active protection device and a using method thereof.The bridge ship-collision-prevention active protection device comprises a laser range finder, a control assembly, a main bridge pier, a main bridge bearing platform, a separated ship-collision-prevention facility structure, a polyurethane foam rotary drum and a riverbed, the laser range finder and the control assembly are arranged on the upper portion of the main bridge pier, and the main bridge bearing platform is arranged at the bottom of the main bridge pier; a plurality of separated ship collision prevention facility structures are arranged on the periphery of the main bridge bearing platform on the main bridge piers, polyurethane foam rotating cylinders are arranged on the separated ship collision prevention facility structures, and the other ends, away from the polyurethane foam rotating cylinders, of the separated ship collision prevention facility structures are used for being buried in a riverbed to be fixed. When the distance between the ship and the main bridge pier is detected to be smaller than a certain range through the optical distance measuring instrument, the control assembly controls the gas generator to inflate the gas bag to generate buoyancy, the polyurethane foam rotating drum is pulled to the water surface through the buoyancy to make contact with the ship, and the situation that the ship collides with the main bridge pier and consequently the main bridge pier is damaged is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of bridge anti-collision protection devices, and in particular to an active bridge anti-ship collision protection device and a use method thereof. Background Art

[0002] With the development of society, many bridges have been built across water to connect surrounding areas. The construction of bridges has driven the economic development of the region, but also had a certain impact on water transportation, especially the navigation of ships. Ships deviate from the waterway and hit bridge piers and abutments due to underwater undercurrents or human errors, causing damage or even collapse of bridges, resulting in extremely serious casualties and economic losses. Therefore, it is necessary to prevent or reduce the damage caused by ships hitting bridge piers and abutments.

[0003] The existing bridge anti-ship collision facilities are mainly divided into fixed and floating types. The anti-ship collision facilities need to fit the bridge piers and abutments, and need to be individually designed according to the shapes of the bridge piers and abutments. The anti-ship collision facilities of various types of bridges cannot be universal, and industrial production cannot be carried out to reduce costs; the floating anti-ship collision facilities are wrapped around the bridge piers. After being hit, due to its integrated structure, a whole set of anti-collision devices needs to be replaced, resulting in great waste; the existing bridge anti-ship collision facilities are usually set above the water level, which will encroach on the navigation width of ships and affect the appearance of the bridge. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an active bridge ship collision protection device and a method of using the same to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an active ship collision protection device for a bridge, comprising a laser rangefinder, a control component, a main bridge pier, a main bridge pedestal, a separate ship collision protection facility structure, a polyurethane foam drum and a riverbed, wherein a laser rangefinder and a control component are provided on the upper part of the main bridge pier, a main bridge pedestal is provided at the bottom of the main bridge pier, a plurality of separate ship collision protection facility structures are provided around the main bridge pedestal on the main bridge pier, a polyurethane foam drum is provided on the separate ship collision protection facility structure, and the other end of the separate ship collision protection facility structure away from the polyurethane foam drum is used for being buried in the riverbed for fixation.

[0006] Wherein, the laser rangefinder and the control component are arranged on both sides of the main bridge piers.

[0007] Among them, the separated anti-ship collision facility structure includes steel pipe A and steel pipe B; a large sliding cavity is opened on the inner side of steel pipe A, a large cavity opening is opened on the top side wall of steel pipe A, a large clamping rod is provided at one end of steel pipe B, the large clamping rod of steel pipe B is set outward, and the large clamping rod of steel pipe B is used to be embedded in the inner wall of the large sliding cavity of steel pipe A and slide.

[0008] Among them, a small sliding cavity is opened on the inner side of the steel pipe B, a small cavity opening is opened on the top wall of the other end of the steel pipe B away from the connection with the steel pipe A, and a small clamping rod is provided at one end of the steel pipe C. The small clamping rod of the steel pipe C is set outward, and the small clamping rod of the steel pipe C is used to be embedded in the inner wall of the small sliding cavity of the steel pipe B and slide.

[0009] The steel tube C further includes a gas generator and an airbag. An airbag is provided inside the steel tube C. A gas generator is provided on the inner side of the steel tube C near the bottom of the airbag. The gas generator is used to be fixed on the lower inner wall of the steel tube C.

[0010] Among them, a steel pipe D is arranged below the steel pipe A, and flanges are arranged on the steel pipes A and D, and a plurality of bolt holes are opened on the flanges, and the flanges include an upper flange and a lower flange; an upper flange is arranged at the bottom of the other end of the steel pipe A away from the steel pipe B, and a lower flange is arranged on the top of the steel pipe D, and the bolt holes of the upper flange of the steel pipe A are used to align with the bolt holes of the lower flange of the steel pipe D and fix them by bolts.

[0011] The inner side of the steel pipe D is filled with concrete, and the other end of the steel pipe D away from the connecting steel pipe A is used to be buried in the riverbed. The steel pipe A and the steel pipe D are arranged around the main bridge pier.

[0012] Among them, three rows and two rows of separate anti-ship collision facility structures are arranged around the main bridge pier respectively, and the separate anti-ship collision facility structures are arranged in a plum blossom shape.

[0013] Among them, the polyurethane foam drum includes a tetrafluoro slide plate, a polymer material shell and polyurethane foam. The polymer material shell is used to be set on the upper part of the prevention steel pipe C. Polyurethane foam is arranged on the inner side of the polymer material shell. A tetrafluoro slide plate is arranged between the polymer material shell and the upper part of the prevention steel pipe C.

[0014] Among them, a bridge anti-ship collision active protection device and a method of using the same include the following steps:

[0015] S1. Detection and signaling stage: When the detection laser rangefinder detects that the distance between the ship and the main bridge pier is less than a certain range, a signal is sent to the separated ship collision prevention facility structure in which the laser rangefinder detects the direction of the ship through the control component;

[0016] S2. Lifting and surfacing stage: The gas generator in the separated anti-ship collision facility structure is activated by the control component to inflate the airbag, and the buoyancy generated by the airbag drives the steel pipe C, the polymer material shell and the polyurethane foam to move upward, so that the steel pipe C moves upward from the small cavity of the steel pipe B. At the same time, the small clamping rod of the steel pipe C slides upward along the inner wall of the small sliding cavity of the steel pipe B. After the steel pipe C slides upward for a distance, the small clamping rod of the steel pipe C will contact the small cavity of the steel pipe B, and the buoyancy generated by the airbag will continue to drive the steel pipe C to move upward, so that The steel pipe C contacts the small cavity through the small clamp rod, driving the steel pipe B to move upward together, so that the steel pipe B moves upward from the large cavity of the steel pipe A. While moving, the large clamp rod of the steel pipe B slides upward along the inner wall of the large sliding cavity of the steel pipe A for a distance, and then contacts the large cavity of the steel pipe A through the large clamp rod of the steel pipe B. The floating large clamp rod of the steel pipe B is blocked through the large cavity of the steel pipe A. At the same time, the small clamp rod of the steel pipe C is blocked through the small cavity of the steel pipe B, and the buoyancy generated by the airbag drives the steel pipe C, the polymer material shell and the polyurethane foam to float to the surface.

[0017] S3. Protection stage: When the ship hits the steel pipe C, the polymer shell and the polyurethane foam, part of the energy is absorbed by the deformation of the polyurethane foam. At the same time, the force of the ship hitting the steel pipe C, the polymer shell and the polyurethane foam causes the PTFE slide to drive the polymer shell and the polyurethane foam to rotate along the upper part of the steel pipe C and move the bow, thereby reducing the kinetic energy of the ship and converting the impact force;

[0018] S4. Disassembly and replacement stage: The impact force of the ship will force the impacted part of the structure of the separated anti-ship collision facility to deform and be damaged. The bolts on the upper flange of steel pipe A and the lower flange of steel pipe D are rotated and screwed in using tools, and steel pipe A is disassembled and replaced. The newly manufactured steel pipe A is hoisted to the installation position, and the bolt holes of the upper flange of steel pipe A are used to align with the bolt holes of the lower flange of steel pipe D and are tightened and fixed with bolts.

[0019] Compared with the existing technology, the present invention has the following beneficial effects:

[0020] (1) In the present invention, the separated anti-ship collision facility structure is usually below the water level. When the laser rangefinder detects that the distance between the ship and the main bridge pier is less than a certain range, the control component sends a signal to the separated anti-ship collision facility structure in that direction, and the gas generator in the separated anti-ship collision facility structure in that area starts to start, inflating the airbag, and pulling the polyurethane foam drum to the water surface through buoyancy to contact the ship, thereby preventing the ship from colliding with the main bridge pier and causing damage to the main bridge pier.

[0021] (2) The utility model adopts a separated design. The separated anti-ship collision facility structure is divided into a replaceable part and a non-replaceable part. When a collision occurs, only the replaceable part of the separated anti-ship collision facility structure where the collision occurs needs to be replaced, thereby saving the use cost. At the same time, it can be applied to various shapes of bridge piers and abutment shapes. It does not encroach on the clear width of the waterway when not in operation.

[0022] (3) The polyurethane foam drum part of the separated anti-ship collision facility structure can rotate around the outer side of the steel pipe C. When a ship collides with the ship, the bow can be turned to reduce the kinetic energy of the ship and convert it into impact force. The deformation energy of the polyurethane foam can further dissipate the kinetic energy of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic plan view of the main bridge piers, main bridge caps and separated anti-ship collision facilities structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the plan structure of the separated ship collision prevention facility structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the overall plan structure of the separated ship collision prevention facility structure of the present invention during the working stage.

[0026] Figure 4 It is a schematic plan view of the replaceable part of the separate anti-ship collision facility structure of the present invention during the non-working phase.

[0027] Figure 5 It is a schematic diagram of the planar structure of the polyurethane foam drum of the present invention.

[0028] Figure 6 It is a schematic diagram of the plane structure of the flange of the present invention.

[0029] Markings in the figure: 1. Laser rangefinder; 2. Control component; 21. Gas generator; 22. Airbag; 3. Main bridge pier; 4. Main bridge abutment; 5. Separate anti-ship collision facility structure; 51. Steel pipe A; 52. Steel pipe B; 53. Steel pipe C; 54. Steel pipe D; 55. Filled with concrete; 56. Bolt; 57. Flange; 5701. Bolt hole; 61. Teflon slide plate; 62. Polymer material shell; 63. Polyurethane foam; 7. Riverbed. DETAILED DESCRIPTION

[0030] like Figure 1As shown, the present invention provides a technical solution: an active ship collision protection device for a bridge, comprising a laser rangefinder 1, a control component 2, a main bridge pier 3, a main bridge abutment 4, a separate ship collision protection facility structure 5, a polyurethane foam drum and a riverbed 7, wherein a laser rangefinder 1 and a control component 2 are provided on the upper part of the main bridge pier 3, a main bridge abutment 4 is provided at the bottom of the main bridge pier 3, a plurality of separate ship collision protection facility structures 5 are provided around the main bridge abutment 4 on the main bridge pier 3, a polyurethane foam drum is provided on the separate ship collision protection facility structure 5, and the other end of the separate ship collision protection facility structure 5 away from the polyurethane foam drum is used for being buried in the riverbed 7 for fixation.

[0031] The laser rangefinder 1 and the control component 2 are arranged on both sides of the main bridge pier 3, the front and the back; the height of the laser rangefinder 1 and the control component 2 can be adjusted according to actual needs, but needs to be higher than the flood level in order to measure the distance of the ship.

[0032] like Figure 2 As shown, three rows and two rows of separate anti-ship collision facility structures 5 are arranged around the main bridge abutment 4 respectively, and the separate anti-ship collision facility structures 5 are arranged in a plum blossom shape; the spacing between the separate anti-ship collision facility structures 5 is 1.5 times the maximum diameter of the separate anti-ship collision facility structures 5; the distance between the innermost separate anti-ship collision facility structure 5 and the main bridge abutment 4 is equal to 0.6 times the maximum diameter of the separate anti-ship collision facility structure 5.

[0033] like Figure 3-5 As shown, the separated anti-ship collision facility structure 5 includes a steel pipe A51 and a steel pipe B52; a large sliding cavity is opened on the inner side of the steel pipe A51, a large cavity opening is opened on the top side wall of the steel pipe A51, a large clamping rod is provided at one end of the steel pipe B52, and the large clamping rod of the steel pipe B52 is arranged outward, and the large clamping rod of the steel pipe B52 is used to be embedded in the inner wall of the large sliding cavity of the steel pipe A51 and slide, and the large cavity opening of the steel pipe A51 is used to cooperate with the large clamping rod of the steel pipe B52 to prevent the steel pipe B52 from escaping from the large cavity opening of the steel pipe A51.

[0034] Among them, a small sliding cavity is opened on the inner side of the steel pipe B52, and a small cavity opening is opened on the top wall of the other end of the steel pipe B52 away from the connection with the steel pipe A51. A small clamping rod is provided at one end of the steel pipe C53, and the small clamping rod of the steel pipe C53 is set outward. The small clamping rod of the steel pipe C53 is used to be embedded in the inner wall of the small sliding cavity of the steel pipe B52 and slide. The small cavity opening of the steel pipe B52 is used to cooperate with the small clamping rod of the steel pipe C53 to prevent the steel pipe C53 from falling out of the small cavity opening of the steel pipe B52.

[0035] The steel pipe C53 further includes a gas generator 21 and an airbag 22. The airbag 22 is provided inside the steel pipe C53. The gas generator 21 is provided inside the steel pipe C53 near the bottom of the airbag 22. The gas generator 21 is used to be fixed on the lower inner wall of the steel pipe C53.

[0036] Among them, a steel pipe D54 is provided below the steel pipe A51, and a flange 57 is provided on the steel pipe A51 and the steel pipe D54. A plurality of bolt holes 5701 are opened on the flange 57, and the flange 57 includes an upper flange and a lower flange. An upper flange is provided at the bottom of the other end of the steel pipe A51 away from the steel pipe B52, and a lower flange is provided on the top of the steel pipe D54. The bolt holes 5701 of the upper flange of the steel pipe A51 are used to align with the bolt holes 5701 of the lower flange of the steel pipe D54 and are fixed by bolts 56.

[0037] The inner side of the steel pipe D54 is provided with inner filling concrete 55 , and the other end of the steel pipe D54 away from the connecting steel pipe A51 is used to be buried in the riverbed 7 , and the steel pipe A51 and the steel pipe D54 are arranged around the main bridge pier 4 .

[0038] like Figure 6 As shown, the polyurethane foam drum includes a polyfluoro slide plate 61, a polymer material shell 62 and a polyurethane foam 63. The polymer material shell 62 is used to be arranged on the upper part of the prevention steel pipe C53. The polyurethane foam 63 is arranged on the inner side of the polymer material shell 62. A polyfluoro slide plate 61 is arranged between the polymer material shell 62 and the upper part of the prevention steel pipe C53.

[0039] The present application also provides a bridge anti-ship collision active protection device and a method of using the same, comprising the following steps:

[0040] S1. Detection and signaling stage: When the detection laser rangefinder 1 detects that the distance between the ship and the main bridge pier 3 is less than a certain range, the control component 2 sends a signal to the separated ship collision prevention facility structure 5 in which the laser rangefinder 1 detects the direction of the ship;

[0041] S2. Lifting and surfacing stage: The gas generator 21 in the separated anti-ship collision facility structure 5 is activated by the control component 2 to inflate the airbag 22, and the buoyancy generated by the airbag 22 drives the steel pipe C53, the polymer material shell 62 and the polyurethane foam 63 to move upward, so that the steel pipe C53 moves upward from the small cavity of the steel pipe B52. While moving, the small clamping rod of the steel pipe C53 slides upward along the inner wall of the small sliding cavity of the steel pipe B52. After the steel pipe C53 slides upward for a distance, the small clamping rod of the steel pipe C53 will contact the small cavity of the steel pipe B52, and the buoyancy generated by the airbag 22 will continue to drive the steel pipe C53 to move upward, so that The steel pipe C53 contacts the small cavity through the small clamp rod and drives the steel pipe B52 to move upward together, so that the steel pipe B52 moves upward from the large cavity of the steel pipe A51. While moving, the large clamp rod of the steel pipe B52 slides upward along the inner wall of the large sliding cavity of the steel pipe A51 for a distance, and then contacts the large cavity of the steel pipe A51 through the large clamp rod of the steel pipe B52, and blocks the floating large clamp rod of the steel pipe B52 through the large cavity of the steel pipe A51. At the same time, the small clamp rod of the steel pipe C53 is blocked through the small cavity of the steel pipe B52, and the buoyancy generated by the airbag 22 drives the steel pipe C53, the polymer material shell 62 and the polyurethane foam 63 to float to the surface.

[0042] S3. Protection stage: When the ship hits the steel pipe C53, the polymer shell 62 and the polyurethane foam 63, the polyurethane foam 63 absorbs part of the energy through deformation. At the same time, the ship hits the steel pipe C53, the polymer shell 62 and the polyurethane foam 63, so that the polyfluoro slide plate 61 drives the polymer shell 62 and the polyurethane foam 63 to rotate along the upper part of the steel pipe C53 and move the bow, thereby reducing the kinetic energy conversion impact force of the ship;

[0043] S4. Disassembly and replacement stage: The impact force of the ship will force the impacted part of the separate anti-ship collision facility structure 5 to deform and be damaged. The bolts 56 on the upper flange of the steel pipe A51 and the lower flange of the steel pipe D54 are rotated and screwed in using tools, and the steel pipe A51 is disassembled and replaced. The newly manufactured steel pipe A51 is hoisted to the installation position, and the bolt hole 5701 of the upper flange of the steel pipe A51 is used to align with the bolt hole 5701 of the lower flange of the steel pipe D54 and is tightened and fixed with bolts 56.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An active ship collision protection device for a bridge, comprising a laser rangefinder (1), a control component (2), a main bridge pier (3), a main bridge cap (4), a separate ship collision protection facility structure (5), a polyurethane foam drum and a riverbed (7), characterized in that: The upper part of the main bridge pier (3) is provided with a laser rangefinder (1) and a control component (2); the bottom of the main bridge pier (3) is provided with a main bridge abutment (4); a plurality of separate ship collision prevention facility structures (5) are provided around the main bridge abutment (4) on the main bridge pier (3); a polyurethane foam drum is provided on the separate ship collision prevention facility structure (5); and the other end of the separate ship collision prevention facility structure (5) away from the polyurethane foam drum is used to be buried in the riverbed (7) for fixation.

2. The active protection device for preventing bridge from ship collision according to claim 1 is characterized in that: The laser rangefinder (1) and the control component (2) are arranged on both sides of the main bridge pier (3).

3. The active protection device for preventing bridge from ship collision according to claim 2 is characterized in that: The separated anti-ship collision facility structure (5) comprises a steel pipe A (51) and a steel pipe B (52); a large sliding cavity is opened inside the steel pipe A (51), a large cavity opening is opened on the top side wall of the steel pipe A (51), a large clamping rod is arranged at one end of the steel pipe B (52), the large clamping rod of the steel pipe B (52) is arranged outward, and the large clamping rod of the steel pipe B (52) is used to be embedded on the inner wall of the large sliding cavity of the steel pipe A (51) and slide.

4. The active protection device for preventing bridge from ship collision according to claim 3 is characterized in that: A small sliding cavity is provided on the inner side of the steel pipe B (52), and a small cavity opening is provided on the top wall of the other end of the steel pipe B (52) away from the connection with the steel pipe A (51). A small clamping rod is provided at one end of the steel pipe C (53), and the small clamping rod of the steel pipe C (53) is arranged outwardly. The small clamping rod of the steel pipe C (53) is used to be embedded in the inner wall of the small sliding cavity of the steel pipe B (52) and slide.

5. The active protection device for preventing bridge from ship collision according to claim 4 is characterized in that: The steel pipe C (53) further comprises a gas generator (21) and an airbag (22). The airbag (22) is arranged inside the steel pipe C (53). The gas generator (21) is arranged inside the steel pipe C (53) and below the airbag (22). The gas generator (21) is used to be fixed on the lower inner wall of the steel pipe C (53).

6. The active protection device for preventing bridge from ship collision according to claim 5 is characterized in that: A steel pipe D (54) is provided below the steel pipe A (51), and flanges (57) are provided on the steel pipe A (51) and the steel pipe D (54), and a plurality of bolt holes (5701) are provided on the flange (57), and the flange (57) includes an upper flange and a lower flange; an upper flange is provided at the bottom of the other end of the steel pipe A (51) away from the steel pipe B (52), and a lower flange is provided at the top of the steel pipe D (54), and the bolt holes (5701) of the upper flange of the steel pipe A (51) are used to align with the bolt holes (5701) of the lower flange of the steel pipe D (54) and fix them by bolts (56).

7. The active protection device for preventing bridge from ship collision according to claim 6 is characterized by: The inner side of the steel pipe D (54) is provided with inner filling concrete (55), and the other end of the steel pipe D (54) away from the connecting steel pipe A (51) is used to be buried in the riverbed (7), and the steel pipe A (51) and the steel pipe D (54) are arranged around the main bridge pier (4).

8. The active protection device for preventing bridge from ship collision according to claim 7 is characterized in that: Three rows and two rows of separate anti-ship collision facility structures (5) are arranged around the main bridge abutment (4), respectively, and the separate anti-ship collision facility structures (5) are arranged in a plum blossom shape.

9. The active protection device for preventing bridge from ship collision according to claim 8 is characterized in that: The polyurethane foam rotating drum comprises a tetrafluoroethylene slide plate (61), a polymer material shell (62) and a polyurethane foam (63); the polymer material shell (62) is used to be arranged on the upper part of the prevention steel pipe C (53); the polyurethane foam (63) is arranged on the inner side of the polymer material shell (62); and the tetrafluoroethylene slide plate (61) is arranged between the polymer material shell (62) and the upper part of the prevention steel pipe C (53).

10. An active protection device for preventing bridge from ship collision and a method for using the same, characterized in that: The following steps are involved: S1. Detection and signaling stage: when the detection laser rangefinder (1) detects that the distance between the ship and the main bridge pier (3) is less than a certain range, a signal is sent to the separated ship collision prevention facility structure (5) in which the laser rangefinder (1) detects the direction of the ship through the control component (2); S2. Lifting and surfacing stage: The control component (2) starts the gas generator (21) in the separated anti-ship collision facility structure (5) to inflate the airbag (22), and the buoyancy generated by the airbag (22) drives the steel pipe C (53), the polymer material shell (62) and the polyurethane foam (63) to move upward, so that the steel pipe C (53) moves upward from the small cavity of the steel pipe B (52). While moving, the small clamping rod of the steel pipe C (53) slides upward along the inner wall of the small sliding cavity of the steel pipe B (52). After the steel pipe C (53) slides upward for a certain distance, the small clamping rod of the steel pipe C (53) will contact the small cavity of the steel pipe B (52), and the buoyancy generated by the airbag (22) will continue to drive the steel pipe C (53) to move upward, so that The steel pipe C (53) contacts the small cavity through the small clamping rod and drives the steel pipe B (52) to move upward together, so that the steel pipe B (52) moves upward from the large cavity of the steel pipe A (51). While moving, the large clamping rod of the steel pipe B (52) slides upward along the inner wall of the large sliding cavity of the steel pipe A (51) for a distance, and then contacts the large cavity of the steel pipe A (51) through the large clamping rod of the steel pipe B (52). The floating large clamping rod of the steel pipe B (52) is blocked by the large cavity of the steel pipe A (51). At the same time, the small clamping rod of the steel pipe C (53) is blocked by the small cavity of the steel pipe B (52). The buoyancy generated by the airbag (22) drives the steel pipe C (53), the polymer material shell (62) and the polyurethane foam (63) to float to the surface of the water. S3. Protection stage: When the ship collides with the steel pipe C (53), the polymer shell (62) and the polyurethane foam (63), a part of the energy is absorbed by the deformation of the polyurethane foam (63). At the same time, the force of the ship colliding with the steel pipe C (53), the polymer shell (62) and the polyurethane foam (63) causes the polyfluoro slide plate (61) to drive the polymer shell (62) and the polyurethane foam (63) to rotate along the upper part of the steel pipe C (53) and move the bow, thereby reducing the kinetic energy of the ship and converting it into impact force; S4. Disassembly and replacement stage: The impact force of the ship will cause the impacted part of the separated anti-ship collision facility structure (5) to deform and be damaged. The bolts (56) on the upper flange of the steel pipe A (51) and the lower flange of the steel pipe D (54) are rotated and screwed in by tools, and the steel pipe A (51) is disassembled and replaced. The newly manufactured steel pipe A (51) is hoisted to the installation position, and the bolt holes (5701) of the upper flange of the steel pipe A (51) are used to align with the bolt holes (5701) of the lower flange of the steel pipe D (54) and are tightened and fixed by bolts (56).

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