Permanent and temporary combined corrosion-resistant anti-collision hanging box

Abstract

This invention discloses a permanent and temporary combined corrosion-resistant and impact-resistant caisson, belonging to the field of building construction technology. It includes a four-sided impact-resistant enclosure structure with interconnected ends. Each impact-resistant enclosure structure comprises, from the outside in, a titanium alloy surface layer, a composite steel base plate layer, a buffer layer, and a UHPC inner wall. The buffer layer includes alternating energy-dissipating steel plates and energy-absorbing rubber. The UHPC inner wall is formed by splicing several UHPC segments. Each UHPC segment has a splicing protrusion and a splicing groove at its two splicing ends. When adjacent UHPC segments are spliced, the splicing protrusion is located within the splicing groove, and a waterproof connector is provided at the joint between adjacent UHPC segments. The waterproof connector includes symmetrically arranged connecting steel plates, with two connecting steel plates located on either side of the joint. A water-stop pad is provided between the connecting steel plates and the joint, and several high-strength bolts are provided on the two connecting steel plates. This technical solution aims to improve the service life and impact resistance of the steel caisson.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a permanent and temporary combined corrosion-resistant and impact-resistant caisson. Background Technology

[0002] In offshore bridge construction, steel caissons are commonly used water-enclosing structures for deep-water foundations and pier caps. Traditional all-steel caissons have the following main shortcomings in practical applications: First, the inner walls of steel caissons are mostly made of smooth steel plates, which do not bond tightly with the subsequently poured concrete main structure. The two structures cannot work together to bear loads, making them prone to separation under loads such as ship collisions. Second, traditional steel caissons generally use an integral structure, resulting in a large self-weight and requiring large floating cranes or crawler cranes for overall installation. This makes construction difficult and costly in deep water or restricted waterways. Third, ordinary steel has poor resistance to seawater corrosion. Long-term immersion in seawater can easily cause rust on the outer walls of the steel caissons. If used as a permanent structure, its lifespan cannot match the 100-year design life of the main bridge structure. Fourth, while some steel caissons also provide permanent collision protection, existing collision protection structures are mostly single steel shells or rubber fenders. After an impact, the buffer structure is irreversibly damaged, rendering it unable to continue providing protection and posing significant safety risks.

[0003] Therefore, developing a caisson structure that can be reliably connected to the main structure, requires no large hoisting equipment, is resistant to seawater corrosion, and can withstand multiple impacts is of great engineering significance. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a corrosion-resistant and impact-resistant caisson that combines permanent and temporary protection, so as to improve the service life and impact protection effect of the steel caisson.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a permanent and temporary combined corrosion-resistant and impact-resistant caisson, comprising a four-sided impact-resistant enclosure structure interconnected at its ends. Each impact-resistant enclosure structure includes, from the outside in, a titanium alloy surface layer, a composite steel base plate layer, a buffer layer, and a UHPC inner wall. The buffer layer comprises alternating energy-dissipating steel plates and energy-absorbing rubber. The UHPC inner wall is formed by splicing several UHPC segments together. Each UHPC segment has a splicing protrusion and a splicing groove at its two splicing ends. When adjacent UHPC segments are spliced ​​together, the splicing protrusion is located at the... A waterproof connector is provided within the splicing groove and at the joint of adjacent UHPC segments. The waterproof connector includes symmetrically arranged connecting steel plates, with two connecting steel plates located on both sides of the joint. A water-stop pad is provided between the connecting steel plates and the joint. Several high-strength screws are provided on the two connecting steel plates, and locking nuts are provided at both ends of the high-strength screws. The high-strength screws and locking nuts are threaded together to press and fix the connecting steel plates and water-stop pads to both sides of the joint, thereby achieving fixation and waterproofing at the joint of adjacent UHPC segments.

[0006] Furthermore, the UHPC inner wall is provided with several evenly distributed lifting rings, one end of which is pre-embedded inside the UHPC inner wall.

[0007] Furthermore, the side surface where the energy-dissipating rubber connects to the composite steel base plate layer is provided with several vertically evenly distributed sliding holes. One end of each sliding hole is connected to the end of the energy-dissipating rubber, and the other end of each sliding hole is located inside the energy-dissipating rubber. The side surface of the energy-dissipating rubber facing the energy-consuming steel plate is provided with several vertically evenly distributed through grooves. The other end of each sliding hole is connected to one of the through grooves. A sliding rod is provided inside each sliding hole, and an energy-consuming spring is provided inside each through groove. One end of each energy-consuming spring is fixed inside the through groove, and the other end of each energy-consuming spring is connected to the end of the sliding rod located inside the energy-dissipating rubber. The other end of the sliding rod is flush with the surface where the energy-dissipating rubber connects to the composite steel base plate layer.

[0008] Furthermore, a pressure-bearing steel plate is provided in the through groove of several adjacent energy-dissipating rubbers. One side of the pressure-bearing steel plate is fixed to the other end of several energy-dissipating springs, and the end of the slide rod located inside the energy-dissipating rubber is fixed to the pressure-bearing steel plate.

[0009] Furthermore, a traction rope is provided on the side of the pressure-bearing steel plate connected to the slide rod. One end of the traction rope is fixed to the pressure-bearing steel plate, and the other end of the traction rope is fixed to the inner wall of the mounting groove facing the sliding hole.

[0010] Furthermore, each of the end joints of the adjacent anti-collision barrier structures is provided with a pivot, which is fixed to the inner wall of the UHPC. The pivot is provided with several vertically evenly distributed rotating rods. One end of each rotating rod is rotatably connected to the pivot, and the other end of each rotating rod is provided with a sliding sleeve. The inner wall of one end of the sliding sleeve is slidably connected to the pivot, and the other end of the sliding sleeve abuts against the inner wall of the bottom layer of the composite steel plate. Both sides of the sliding sleeve are provided with diagonal rods. One end of each diagonal rod is fixed to the sliding sleeve, and the other end of each diagonal rod is provided with a pull rope. One end of each pull rope is fixed to the diagonal rod, and the other end of the pull rope passes through several energy-dissipating rubbers and energy-consuming steel plates and is fixed to the composite steel base plate.

[0011] Furthermore, the UHPC inner wall is provided with a first fixed pulley and a second fixed pulley, and the pull rope is wound around the first fixed pulley and the second fixed pulley, which are used to guide the movement of the pull rope.

[0012] Furthermore, a support spring is sleeved on the slide rod, with one end of the support spring abutting against the rotating shaft and the other end of the support spring abutting against the end of the sliding sleeve.

[0013] The beneficial effects of this invention are as follows: This application addresses the key problems in traditional steel caisson construction, namely, the poor connection between the steel caisson and the main structure, the need for large lifting equipment for installation, the susceptibility of the steel caisson structure to seawater corrosion, and the failure of the steel caisson as a collision protection structure after impact. The aim is to increase the tightness of the connection between the steel caisson and the main structure by adding shear keys to the lifting rings, to avoid the use of large equipment by constructing the UHPC inner wall in sections, to increase the lifespan of the steel caisson by using corrosion-resistant titanium alloy composite steel plates as the outer wall, and to enhance the collision protection capability of the main structure through multi-level protection using energy-dissipating rubber and energy-absorbing steel plates. This solves the pain points and difficulties in the traditional steel caisson construction process.

[0014] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0015] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 This is a plan view of the anti-collision gantry of the present invention; Figure 2 This is a partial elevation view of the anti-collision gantry of the present invention; Figure 3This is a partial elevation view of another plane of the anti-collision gantry of the present invention; Figure 4 This is a partial plan view of the anti-collision gantry of the present invention; Figure 5 For the present invention Figure 4 A magnified view of a portion of point A in the middle; Figure 6 This is a partial schematic diagram of the rotating rod assembly installed at the four corners of the anti-collision box according to the present invention; Figure 7 This is a three-dimensional schematic diagram of the present invention, in which energy-dissipating springs and sliding rods are installed inside several energy-dissipating rubbers of the anti-collision gantry; Figure 8 This is a three-dimensional schematic diagram of the through groove provided on the energy-dissipating rubber in the anti-collision box of the present invention; Figure 9 This is a schematic cross-sectional view of the present invention, which incorporates an energy-dissipating spring and a sliding rod within the energy-dissipating rubber of the anti-collision gantry.

[0016] The following labels are shown in the attached diagram: 1. Titanium alloy surface layer; 2. Composite steel base plate layer; 3. Energy-dissipating steel plate; 4. UHPC inner wall; 5. Lifting ring; 6. Energy-dissipating rubber; 7. Connecting steel plate; 8. Water-stop pad; 9. High-strength screw; 10. Locking nut; 11. Splicing protrusion; 12. Splicing groove; 13. Rotating shaft; 14. Rotating rod; 15. Sliding sleeve; 16. Diagonal rod; 17. First fixed pulley; 18. Traction rope; 19. Second fixed pulley; 20. Sliding hole; 21. Through groove; 22. Sliding rod; 23. Pull rope; 24. Pressure-bearing steel plate; 25. Energy-dissipating spring. Detailed Implementation

[0017] like Figures 1-9 As shown, the present invention discloses a permanent and temporary combined corrosion-resistant and impact-resistant caisson, comprising a four-sided impact-resistant enclosure structure interconnected at its ends. Each impact-resistant enclosure structure includes, from the outside in, a titanium alloy surface layer 1, a composite steel base plate layer 2, a buffer layer, and a UHPC inner wall 4. The buffer layer includes alternating energy-dissipating steel plates 3 and energy-absorbing rubber 6. The UHPC inner wall 4 is formed by splicing several UHPC segments together. Each UHPC segment has a splicing protrusion 11 and a splicing groove 12 at its two splicing ends. When adjacent UHPC segments are spliced, the splicing protrusion 11 is located at the splicing end. Waterproof connectors are provided within the groove 12 and at the joints of adjacent UHPC segments. The waterproof connectors include symmetrically arranged connecting steel plates 7, with two connecting steel plates 7 located on both sides of the joint. Water-stop pads 8 are provided between the connecting steel plates 7 and the joint. Several high-strength screws 9 are provided on the two connecting steel plates 7. Locking nuts 10 are provided at both ends of the high-strength screws 9. The high-strength screws 9 and the locking nuts 10 are threaded together to press and fix the connecting steel plates 7 and the water-stop pads 8 to both sides of the joint, thereby achieving fixation and waterproofing at the joints of adjacent UHPC segments.

[0018] In this technical solution, prefabrication is carried out in sections and assembled on-site: the inner wall 4 of the UHPC is decomposed into multiple segments, and the segments are initially positioned by the interlocking of protrusions and grooves, avoiding the use of large hoisting equipment for overall installation. Mechanical locking and waterproofing: high-strength screws 9 pass through two connecting steel plates 7 and are tightened with nuts, causing the connecting steel plates 7 to press inward against the water-stop pad 8. The water-stop pad 8 fits tightly against the UHPC surface on both sides of the joint, forming an elastic seal; at the same time, the tightening force of the screws also constrains the relative displacement between segments, enhancing the connection rigidity. Multi-level buffer layer arrangement: the titanium alloy surface layer 1 provides external corrosion resistance and low friction characteristics, and the subsequent composite steel base plate, alternating energy-dissipating steel plates 3 and energy-absorbing rubber 6 form an energy dissipation gradient, absorbing impact energy step by step from the outside to the inside.

[0019] This technical solution eliminates the problem of traditional integral steel caissons requiring large floating cranes or crawler cranes for installation, reducing the requirements for construction equipment. The convex and concave structure at the joints and the bolted connection ensure the integrity and shear resistance of the UHPC inner wall 4, while the water-stop pad 8 and the bolt compression effect achieve permanent waterproofing, preventing seawater from seeping in and corroding the interior later. The titanium alloy surface layer 1 and the composite steel base plate form a "titanium alloy composite steel plate outer wall," which has excellent seawater corrosion resistance and extends the service life of the caisson as a permanent structure. The alternating arrangement of energy-dissipating steel plates 3 (metal yield energy dissipation) and energy-absorbing rubber 6 (viscoelastic energy dissipation) constitutes a multi-level collision protection mechanism. Even in the event of a ship collision, the outer buffer structure can sacrifice energy dissipation, while the inner UHPC remains intact, avoiding the problem of traditional collision protection structures "failing upon a single impact."

[0020] In one feasible embodiment, several evenly distributed lifting rings 5 ​​are provided on the inner wall 4 of the UHPC, with one end of each ring 5 pre-embedded inside the inner wall 4 of the UHPC. This pre-embedding of the lifting rings 5 ​​within the inner wall 4 of the UHPC avoids the problem of loose connections caused by later welding or bolting in traditional steel caissons. During permanent use, the lifting rings 5 ​​act as shear-resistant connectors, enabling the inner wall of the caisson and the internally poured concrete main structure to form an integrated load-bearing structure, achieving a "permanent-temporary integration"—serving as lifting points during construction and as shear force transfer components during service.

[0021] In one feasible embodiment, a plurality of vertically evenly distributed sliding holes 20 are provided on the side surface where the energy-dissipating rubber 6 is connected to the composite steel base plate layer 2. One end of the sliding hole 20 is connected to the end of the energy-dissipating rubber 6, and the other end of the sliding hole 20 is located inside the energy-dissipating rubber 6. A plurality of vertically evenly distributed through grooves 21 are provided on the side surface of the energy-dissipating rubber 6 facing the energy-consuming steel plate 3. The other end of the sliding hole 20 is connected to the through groove 21. A sliding rod 22 is provided in the sliding hole 20, and an energy-consuming spring 25 is provided in the through groove 21. One end of the energy-dissipating spring 25 is fixed in the through groove 21, and the other end of the energy-dissipating spring 25 is connected to the end of the sliding rod 22 located inside the energy-dissipating rubber 6. The other end of the sliding rod 22 is flush with the surface where the energy-dissipating rubber 6 is connected to the composite steel base plate layer 2.

[0022] Under normal conditions, the end of the slide rod 22 contacts the composite steel base plate layer 2 (the inner side of the titanium alloy composite steel plate) but without pressure. When the outer wall is impacted and deforms inward, the composite steel base plate layer 2 pushes the slide rod 22 inward, compressing the energy-dissipating spring 25 and converting kinetic energy into the elastic potential energy and frictional heat energy of the spring. When the slide rod 22 moves within the sliding hole 20, it generates friction with the hole wall, further dissipating energy. The viscoelasticity of the rubber itself also participates in energy dissipation. At the same time, the slide rod 22 moves under pressure into the through groove 21, meaning that the slide rod 22 will not make rigid contact with the impacting vessel, thus avoiding the problem of the slide rod 22 inserting into the vessel.

[0023] Traditional energy-dissipating rubber 6 relies solely on its own deformation to dissipate energy. This solution introduces a mechanical energy-dissipating mechanism consisting of a slide bar 22 and an energy-dissipating spring 25, thereby increasing the energy absorption capacity of the buffer layer. The flush design of the slide bar 22's end allows for the compression of the energy-dissipating spring 25 with slight deformation of the outer wall, improving sensitivity under small impacts. Combined with the energy-dissipating steel plate 3 (metal yielding), a triple-layered energy dissipation mechanism of "spring elastic energy dissipation + rubber viscous energy dissipation + steel plate plastic energy dissipation" is formed, achieving true multi-level collision protection.

[0024] In one feasible embodiment, a pressure-bearing steel plate 24 is provided in the through groove 21 of several adjacently arranged energy-dissipating rubbers 6. One side of the pressure-bearing steel plate 24 is fixed to the other end of several energy-dissipating springs 25, and one end of the slide rod 22 located inside the energy-dissipating rubber 6 is fixed to the pressure-bearing steel plate 24.

[0025] Multiple energy-dissipating springs 25 within the same vertical region are connected to a pressure-bearing steel plate 24. A sliding rod 22 pushes the pressure-bearing steel plate 24, which simultaneously compresses all the springs connected to it. This allows multiple energy-dissipating springs 25 in unimpacted areas to work together when the ship impacts a location. Simultaneously, the pressure-bearing steel plate 24 can also distribute the localized impact force to the multiple sliding rod 22-spring units.

[0026] This avoids the problems of uneven force distribution on a single slide bar 22 or failure of individual springs, improving the integrity and redundancy of the buffer layer. The presence of the pressure-bearing steel plate 24 allows the impact force at the same height to be evenly distributed across multiple energy-dissipating components, preventing stress concentration from causing localized tearing of the energy-dissipating rubber 6.

[0027] In one feasible embodiment, a traction rope 18 is provided on the side of the pressure plate 24 that is connected to the slide bar 22. One end of the traction rope 18 is fixed to the pressure plate 24, and the other end of the traction rope 18 is fixed to the inner wall of the mounting groove facing the sliding hole 20.

[0028] When the outer wall is impacted by a ship, the composite steel base plate layer 2 partially indents inward, pushing the slide bar 22 in that area to move inward. The slide bar 22 pushes the pressure-bearing steel plate 24, compressing the energy-dissipating spring 25. As the pressure-bearing steel plate 24 moves inward, it pulls the traction rope 18 fixed to it. The other end of the traction rope 18 is fixed to the inner wall of the mounting groove (i.e., deeper inside the energy-dissipating rubber 6). Since the traction rope 18 is inextensible, after the pressure-bearing steel plate 24 moves a certain distance, the traction rope 18 is straightened and begins to exert tension on the inner wall of the mounting groove. This tension will cause the entire energy-dissipating rubber 6 (and even adjacent energy-dissipating rubber 6) to undergo tensile or shear deformation. Originally, only the slide bar 22-spring system in the directly pressure-bearing area was dissipating energy; through the transmission of the traction rope 18, the energy-dissipating rubber 6 far from the impact point is also forced to participate in deformation, thereby diffusing the local impact energy to a larger buffer layer, allowing more energy-dissipating rubber 6 to absorb energy through viscoelastic internal friction.

[0029] This configuration offers the following technical advantages: Energy dispersion: It prevents excessive energy concentration at the impact point, avoiding tearing or failure of the energy-dissipating rubber 6 due to excessive deformation. Coordinated energy dissipation: It achieves "point-line-surface" linkage—the displacement of a single slide bar 22 is converted into the overall deformation of multiple energy-dissipating rubber bodies 6 through the traction rope 18, improving the material utilization rate of the buffer layer. Multi-path energy dissipation: In addition to the original spring compression, slide bar 22 friction, and rubber compression, it adds a tensile / shear energy dissipation mode, enriching the energy dissipation mechanism. Maintaining structural integrity: Since the traction rope 18 does not restrict displacement (it only transmits it), the elastic recovery ability of the energy-dissipating rubber 6 can still restore its shape after the impact, avoiding secondary impacts that may be caused by rigid restraint.

[0030] In one feasible embodiment, each end joint of an adjacent anti-collision barrier structure is provided with a pivot 13, which is fixed to the inner wall 4 of the UHPC. Several vertically distributed rotating rods 14 are provided on the pivot 13. One end of the rotating rod 14 is rotatably connected to the pivot 13, and the other end of the rotating rod 14 is provided with a sliding sleeve 15. The inner wall of one end of the sliding sleeve 15 is slidably connected to the pivot 13, and the other end of the sliding sleeve 15 abuts against the inner wall of the bottom layer of the composite steel plate. Diagonal rods 16 are provided on both sides of the sliding sleeve 15. One end of the diagonal rod 16 is fixed to the sliding sleeve 15, and the other end of the diagonal rod 16 is provided with a pull rope 23. One end of the pull rope 23 is fixed to the diagonal rod 16, and the other end of the pull rope 23 passes through several energy-dissipating rubbers 6 and energy-consuming steel plates 3 and is fixed to the composite steel base plate (passing through the through groove 21; of course, the energy-consuming steel plate 3 should also be provided with through grooves, etc., which will not be elaborated on here).

[0031] In one feasible embodiment, a first fixed pulley 17 and a second fixed pulley 19 are provided on the inner wall 4 of the UHPC, and a pull rope 23 is wound around the first fixed pulley 17 and the second fixed pulley 19. The first fixed pulley 17 and the second fixed pulley 19 are used to guide the movement of the pull rope 23.

[0032] In one feasible embodiment, a support spring is sleeved on the slide bar 22, with one end of the support spring abutting against the rotating shaft 13 and the other end of the support spring abutting against the end of the sliding sleeve 15.

[0033] like Figure 1 As shown, it is inconvenient to install energy-dissipating rubber 6 and energy-absorbing steel plate 3 at the four corners of the hull. Even if they could be installed, the number of energy-dissipating rubber 6 and energy-absorbing steel plate 3 that can participate in energy dissipation when the ship hits the corner is relatively small, and they cannot achieve a good anti-collision effect. Therefore, components such as pivot shaft 13 and pull rope 23 are installed at the corners. The working principle and technical effect of the above components to improve the anti-collision effect at the corners are as follows: When a ship impacts a corner head-on (the impact direction is directly opposite the corner), the impact force acts directly on the composite steel bottom plate layer 2 at the corner, causing it to indent inward. The indented bottom plate pushes the sliding sleeve 15, which is in contact with it, causing it to overcome the preload of the support spring and slide inward. As the sliding sleeve 15 slides inward, it drives the diagonal bars 16 on both sides to move inward together. The diagonal bars 16 then pull the rope 23 fixed to them. After being pulled, the rope 23 is guided by the first fixed pulley 17 and the second fixed pulley 19 (changing direction to reduce friction and wear), and the tension is transmitted to the other end fixed to the composite steel bottom plate. After being stretched, the composite steel bottom plate moves inward, compressing the energy-dissipating rubber 6 and the energy-absorbing steel plate 3 on its inner side, causing these buffer materials to compress and deform, thereby absorbing and dissipating the impact energy. The support spring is further compressed during the sliding of the sliding sleeve 15; after the impact ends, the support spring releases its elastic potential energy, pushing the sliding sleeve 15 to reset, so that the entire mechanism returns to its initial state and prepares for the next impact.

[0034] When a ship eccentrically impacts a corner (the impact direction does not point towards the corner, such as impacting the port side of the corner), the eccentric impact generates a torque that acts on the cornering mechanism. In addition to potentially sliding axially, the sliding sleeve 15 will also deflect around the pivot 13 (i.e., rotate at a certain angle). The deflection of the sliding sleeve 15 causes displacement of the diagonal bars 16 on both sides. Under the guidance of the first fixed pulley 17 and the second fixed pulley 19, the pull rope 23 is always wound around the pulley along a predetermined low-friction path. No matter how the sliding sleeve 15 deflects, the pull rope 23 can maintain the effective pulling force direction on the composite steel bottom plate through the automatic adjustment of the pulley, ensuring that the pull ropes 23 on both sides can be pulled (only the amplitude and force of the pull may be different). If there are no fixed pulleys, when the sliding sleeve 15 deflects, the pulling force direction of the pull ropes 23 on both sides will change, causing one side of the pull rope 23 to slack or even get stuck, and unable to effectively transmit the pulling force.

[0035] Specifically: the deflection causes a larger backward movement of one side of the diagonal bar 16, tightening the pull rope 23 on that side. This tension is then transmitted to the corresponding composite steel base plate via a fixed pulley, compressing the energy-dissipating rubber 6 on that side. The other side's diagonal bar 16 moves backward less or forward, but under the constraint of the fixed pulley, the pull rope 23 maintains a certain tension (not completely slack), which can also cause a certain displacement of the base plate on that side, thus achieving coordinated energy dissipation on both sides. The support spring also plays an auxiliary role during the deflection process: the spring's preload keeps the sliding sleeve 15 tightly pressed against the inner wall of the composite steel base plate, ensuring that the pull rope 23 can be triggered at the initial stage of deflection, avoiding response delays caused by gaps.

[0036] Adaptive bidirectional drive: The sliding sleeve 15's dual-degree-of-freedom motion of "axial sliding + around-axis deflection" enables the mechanism to simultaneously respond to both positive and eccentric impacts at the four corners of the hoisting box, requiring no additional sensors or active control—purely mechanical self-adaptation. When an eccentric impact causes the sliding sleeve 15 to deflect, the fixed pulley system ensures that each pull rope 23 maintains a reasonable force direction and tension, allowing both sides of the composite steel base plate to be pulled, thereby converting local eccentric energy into overall compression energy dissipation of the double-sided buffer layers. Without the fixed pulleys, deflection would cause one side of the pull rope 23 to fail, and the energy could not be distributed.

[0037] Energy Dispersion and Coordinated Energy Consumption: The displacement / rotation at the corner is transferred to the composite steel base plate in the indirect impact zone via the pull rope 23, allowing a larger range of energy-dissipating rubber 6 and energy-consuming steel plate 3 to participate in deformation, avoiding stress concentration and improving the overall impact resistance of the hoisting box. Support Spring Reset and Pre-tensioning: Automatic reset after impact ensures the mechanism can withstand multiple impacts (solving the problem of "failure after a single impact" in traditional anti-collision structures). Pre-tensioning ensures the sliding sleeve 15 always abuts against the composite steel base plate, eliminating initial gaps and improving response sensitivity under small impacts. Vertically Distributed Multiple Mechanisms: With several vertically distributed rotating rods 14 and sliding sleeves 15 on the rotating shaft 13, each pull rope 23 independently controls the compression of the base plate within a certain height range, ensuring uniform energy consumption along the hoisting box height and preventing local buckling.

[0038] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A permanent and temporary combined corrosion-resistant and impact-resistant caisson, comprising a four-sided impact-resistant enclosure structure with interconnected ends, characterized in that, One side of the anti-collision barrier structure includes, from the outside in, a titanium alloy surface layer, a composite steel base plate layer, a buffer layer, and a UHPC inner wall. The buffer layer includes alternating energy-dissipating steel plates and energy-absorbing rubber. The UHPC inner wall is formed by splicing several UHPC segments together. Each UHPC segment has a splicing protrusion and a splicing groove at its two splicing ends. When adjacent UHPC segments are spliced, the splicing protrusion is located within the splicing groove. A waterproof connector is provided at the joint between adjacent UHPC segments. The waterproof connector includes symmetrically arranged connecting steel plates, with two connecting steel plates located on both sides of the joint. A water-stop pad is provided between the connecting steel plates and the joint. Several high-strength screws are provided on the two connecting steel plates. Each end of the high-strength screw has a locking nut. The high-strength screw and the locking nut are threaded together to press and fix the connecting steel plates and the water-stop pad to both sides of the joint, thereby achieving fixation and waterproofing at the joint between adjacent UHPC segments.

2. The corrosion-resistant and impact-resistant caisson with permanent and temporary combined structure according to claim 1, characterized in that: The UHPC inner wall is provided with several evenly distributed lifting rings, one end of which is pre-embedded inside the UHPC inner wall.

3. The corrosion-resistant and impact-resistant caisson with permanent and temporary bonding as described in claim 1, characterized in that: The energy-dissipating rubber has several vertically evenly distributed sliding holes on the side where it connects to the composite steel base plate. One end of each sliding hole is connected to the end of the energy-dissipating rubber, and the other end of each sliding hole is located inside the energy-dissipating rubber. The side of the energy-dissipating rubber facing the energy-consuming steel plate has several vertically evenly distributed through grooves. The other end of each sliding hole is connected to one of the through grooves. A sliding rod is installed inside each sliding hole, and an energy-consuming spring is installed inside each through groove. One end of each energy-consuming spring is fixed inside the through groove, and the other end of each energy-consuming spring is connected to the end of the sliding rod located inside the energy-dissipating rubber. The other end of the sliding rod is flush with the surface where the energy-dissipating rubber connects to the composite steel base plate.

4. The corrosion-resistant and impact-resistant caisson with permanent and temporary bonding as described in claim 3, characterized in that: A pressure-bearing steel plate is provided in the through groove of several adjacent energy-dissipating rubbers. One side of the pressure-bearing steel plate is fixed to the other end of several energy-dissipating springs, and the end of the slide rod located inside the energy-dissipating rubber is fixed to the pressure-bearing steel plate.

5. A permanent and temporary combined corrosion-resistant and impact-resistant caisson according to claim 4, characterized in that: A traction rope is provided on the side of the pressure-bearing steel plate that is connected to the slide rod. One end of the traction rope is fixed to the pressure-bearing steel plate, and the other end of the traction rope is fixed to the inner wall of the mounting groove facing the sliding hole.

6. The corrosion-resistant and impact-resistant caisson with permanent and temporary combined structure according to claim 1, characterized in that: Each end joint of the adjacent anti-collision barrier structure is equipped with a pivot, which is fixed to the inner wall of the UHPC. The pivot has several vertically distributed rotating rods, one end of which is rotatably connected to the pivot, and the other end of which is equipped with a sliding sleeve. The inner wall of one end of the sliding sleeve is slidably connected to the pivot, and the other end of the sliding sleeve abuts against the inner wall of the bottom layer of the composite steel plate. Both sides of the sliding sleeve are equipped with diagonal rods, one end of which is fixed to the sliding sleeve, and the other end of each diagonal rod is equipped with a pull rope. One end of the pull rope is fixed to the diagonal rod, and the other end of the pull rope passes through several energy-dissipating rubber and energy-consuming steel plates and is fixed to the composite steel base plate.

7. A permanent and temporary combined corrosion-resistant and impact-resistant caisson according to claim 6, characterized in that: The UHPC inner wall is provided with a first fixed pulley and a second fixed pulley, and the pull rope is wound around the first fixed pulley and the second fixed pulley. The first fixed pulley and the second fixed pulley are used to guide the movement of the pull rope.

8. A permanent and temporary combined corrosion-resistant and impact-resistant caisson according to claim 6, characterized in that: A support spring is sleeved on the slide rod. One end of the support spring abuts against the rotating shaft, and the other end of the support spring abuts against the end of the sliding sleeve.

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