77 results about "Tonnage" patented technology

The invention relates to the technical field of port operation state sensing and monitoring, and particularly discloses a port operation state sensing and monitoring system based on a data center, which monitors a wind speed value and a visibility value at each current time point in real time through a micro weather station array, and synchronously obtains tidal phase data of an observatory. Comprehensively generating multi-dimensional meteorological data in a set time period; dynamically calculating the berthing safety coefficient of the target ship through a multi-dimensional constraint condition in combination with the load tonnage of the target ship; according to the target ship berthing safety coefficient, a dynamic ship berthing strategy of the target ship is generated; through comprehensive application of multi-dimensional meteorological data acquisition, berthing safety coefficient calculation, dynamic ship berthing strategy generation and a feedback terminal, a port manager can monitor and optimize the ship berthing process in real time. Therefore, the operation safety and efficiency of the port are improved, a more scientific and flexible berthing scheme is provided for the ship, and the sustainability and economic benefits of port operation are ensured.

The invention discloses a risk monitoring and control method for offshore construction, and particularly relates to the technical field of collision control for offshore construction, and the method comprises the steps: obtaining the real-time position, the navigational speed, the course, the tonnage, the wind speed, the wind direction, the wave height, the wave direction, the flow speed, the ship type, the ship historical track and the ship behavior mode of a ship, and carrying out the preprocessing; and inputting the processed multi-source data into the constructed ship trajectory prediction model, outputting a plurality of possible trajectories and trajectory probabilities of a future time window, and then calculating a collision probability and a dynamic safety distance, thereby improving the degree of closeness between the collision probability and a real collision probability, improving the accuracy of collision probability analysis, and improving the accuracy of ship trajectory prediction. The safety boundary of the ship and the construction area is quantified in real time, the failure of a fixed threshold value in a complex environment is avoided, a dynamic judgment reference is provided for risk level classification, the risk identification precision is improved, a response instruction is matched more accurately, and the collision harm is further reduced.

The invention discloses a calibration structure and a calibration method for a large-tonnage force value measurement system of a compression-shear tester, a calibration device is arranged in the large-tonnage force value measurement system of the compression-shear tester, the calibration device records parameters in the large-tonnage force value measurement system of the compression-shear tester, and the load borne by the calibration device is calculated according to the recorded parameters. Therefore, the large-tonnage force value measurement system of the compression-shear testing machine is calibrated and metered, and the measurement accuracy of the large-tonnage force value measurement system of the compression-shear testing machine is ensured. And calibration devices with various structures are arranged to cope with different working conditions of the compression-shear testing machine, so that calibration and metering work under various working conditions are realized, and the calibration problem of the compression-shear testing machine under various different conditions is solved.

The invention relates to a crashworthiness analysis and optimization design method of a steel and UHPC (Ultra High Performance Concrete) combined anti-collision device. According to the anti-collision performance analysis method, the resistance-collision depth relation of the inner core structure, the top steel plate, the bottom steel plate and the outer steel plate is considered at the same time, the calculation method is scientific, the calculation result is safe and reliable, compared with a traditional mode depending on a refined finite element model, the method can rapidly judge the anti-collision performance of the anti-collision device, a large amount of calculation cost and time are saved, and the calculation efficiency is improved. And actual engineering requirements are met. The design method is optimized, the relation between ship resistance and collision depth and the relation between anti-collision device resistance and collision depth are combined, or the relation between ship resistance and collision depth, the relation between anti-collision device resistance and collision depth and the relation between pier resistance and collision depth are combined, and the peak collision force and the maximum collision depth of the anti-collision device can be accurately predicted according to the ship speed and the ship drainage tonnage. According to the method, the design scheme of the anti-collision device can be rapidly adjusted and optimized in the preliminary design stage, and efficient and accurate design is achieved.

The invention relates to an intelligent ship repair business opportunity prediction method and system based on multi-source data fusion, and the method comprises the steps: collecting multi-source data including ship basic data, market dynamic data and enterprise internal data; automatically screening out business opportunity ships with high potential ship repairing business opportunities by setting multi-dimensional screening rules such as a special inspection window rule, a geofence rule and a tonnage limitation rule; data of multiple dimensions including historical ship repair record scores, historical common route record scores, customer level scores, to-be-detected approaching time scores, company affiliated country scores, ship type scores, ship size scores and the like are constructed; dynamically calculating the total score of each business opportunity ship in the initial business opportunity list by combining a static weight and a dynamic adjustment mechanism; and finally, automatically converting a natural language query request input by a user into a structured format query condition by utilizing a natural language processing technology in combination with a knowledge base and an intention recognition conversion method so as to screen out a ship matching result, thereby realizing prediction of ship repair business opportunities.

The invention provides a gear and rack climbing type ship lift adopting a balance winding drum for safe fortification and an operation method of the gear and rack climbing type ship lift, relates to the field of ship lifts, and aims to solve the problems of main engine arrangement and water leakage safety fortification of a high-water-head large-tonnage ship lift. The ship lift comprises a self-bearing ship chamber structure, gear and rack driving mechanisms distributed on side wing platforms, a balance winding drum device at the top of a tower column, a balance weight system and a butt joint locking / jacking device. The ship chamber driving mechanism is driven to ascend and descend through meshing of a gear and a rack, the balance winding drum device is connected with the ship chamber and the balance weight system through a steel wire rope, weight balance is achieved, and locking is achieved through an accident brake during water leakage. The butt joint device resists loads through frictional contact and mechanical self-locking. According to the invention, the manufacturing and mounting problems of the super-large winding drum are avoided, space conflicts are solved, a three-level protection mechanism is constructed, the braking response time is less than or equal to 0.5 second, the locking reliability is 100%, and the device is suitable for navigation of ships with 200m-level water heads and 5000 tons.

The invention relates to the technical field of offshore wind power, in particular to a method for an ultra-wide structure to pass through a narrow dock entrance, a semi-submersible barge and a semi-submersible barge carrying system. Comprising the following steps that S1, the semi-submersible barge dives, and a deck of the semi-submersible barge is lower than the bottom face of a to-be-transported structure; s2, a to-be-transported structure is arranged above a deck; the semi-submersible barge floats until the bottom surface of the part, protruding out of the semi-submersible barge, of the to-be-transported structure is H2 higher than the water surface in the dock, H2 is larger than or equal to H1, and the to-be-transported structure is piled on the deck; and S3, driving the semi-submersible barge and the to-be-transported structure to pass through the dock entrance together. According to the method for enabling the ultra-wide structure to pass through the narrow dock entrance, the problem that a large-size, large-tonnage and complex structure passes through the narrow dock entrance can be solved, the method is suitable for the situation that a large structure is built in an existing dock building mode, the dock gate widening cost can be saved, or the remote towing cost of the large dock building from the distance is saved.

The application provides a container liner shutdown and short-time capacity abnormality identification method and system, voyage dynamic data is calculated based on AIS data of a container ship, port data and berth data, average berthing operation time and average anchoring operation time of each port for each ship type are calculated according to ship type in the AIS data and the port data, and a specific judgment method is used to judge that the current and historical state of the container ship is in the sailing state or the shutdown state, then the number of container ships in the shutdown state of different ship companies is counted according to the container ship belonging to the ship company, the container ship shutdown and short-time capacity abnormality of different ship companies is analyzed and counted according to the number of container ships in the shutdown state and the deadweight tonnage data in the AIS data and is displayed. The application can effectively identify and distinguish the sailing or shutdown state of the container liner, and can effectively improve the accuracy of the ship company capacity comparison and monitoring.

The present application relates to the technical field of shipbuilding plant, especially to large tonnage ship, ship modularization, digital construction technology, in particular to a kind of support frame structure of shipyard load floor;Including the support rod of section being "T" shape, also include the connecting rod or connecting plate being arranged in the both sides of support rod.The above-mentioned "T" shape support rod and its accompanying connecting rod structure proposed in the present application are easy to mass production and have guaranteed quality, at the same time, I-beam or rail is used as support rod, which has stronger load capacity, and avoids the quality risk of thick plate welding, at the same time, the load floor proposed in the present application connects support member with floor reinforcement during manufacturing process, so that after concrete pouring and solidification, higher "integrity" and bearing capacity can be realized, and the problems of floor collapse and cracking caused by long-term load in later period are avoided.

The present application relates to ship lift anti-collision technical field, specifically is a kind of ship lift anti-collision device and method based on water power energy dissipation.The device includes lifting system, docking locking system and hydraulic energy dissipation system, lifting system is connected with arresting cable through lifting reversing device, and arresting cable end is hinged energy dissipation flap.The method includes: ship enters compartment before lifting and locking arresting cable, and according to the ship displacement adjustment the opening and closing state of energy dissipation flap on overflow hole;When ship impact, arresting cable drives energy dissipation flap to rotate, and the kinetic energy is consumed by water body work and gravity lifting;When not completely stopped, provide rigid support redundancy by energy dissipation flap.The present application realizes flexible blocking and short braking, and the structure is simple, self-adapting, and suitable for different tonnage ship anti-collision protection.

The present invention relates to a method for side-rolling and loading large steel box girder segments onto a ship. By adopting a centralized control combination method, 2-3 12-axle modular vehicles are combined into one body and synchronized through the control of a power head PPU. The modular vehicle is moved under the steel box girder, and the steel box girder is lifted to the required height through a hydraulic lifting system. At an appropriate tide level, the large steel box girder segment is side-rolled onto the transport ship along a precast concrete ramp by using the modular vehicle. According to the differences in the forces on the wharf and the transport ship at each stage and the changes in the height difference of the deck surface during the operation process, the water level in the transport ship and the dock is adjusted to ensure the horizontalness of the deck surface. After the modular vehicle reaches the designated position, the lifting system is adjusted to lower the steel girder above the support pier on the deck surface. After being firmly supported, the modular vehicle drives away from the transport ship. Advantages: First, it solves the technical problem of side-loading large steel box girder segments and avoids the use of large-tonnage lifting facilities in the transfer site. Second, it can be used for the loading of various types of large steel box girder segments and has relatively low requirements for the loading wharf.

The embodiment of the invention discloses a method and equipment for determining ship-collision-resistant fortification ship type parameters of a bridge and a medium, and relates to the technical field of bridge risk assessment. The method comprises the steps that a ship-to-bridge collision model is constructed, and the ship-to-bridge collision model is used for reflecting the relation among ship-to-bridge displacement, mass and rigidity; determining a calculation formula of a net displacement ratio and an energy ratio of the ship and the bridge according to the ship-bridge collision model; according to the calculation formula and the law of conservation of energy, determining an expression of the initial navigational speed of the ship about the energy absorbed by the pier; determining a navigational speed threshold expression for preventing the bridge from collapsing under different ship tonnages according to the expression and the maximum threshold of the bridge pier displacement; and according to the ship speed threshold expression, determining fortification ship type parameters of the bridge pier. According to the embodiment, fortification ship type parameters can be determined according to bridge pier structure characteristics and service stages.

The invention provides a large-tonnage air floating structure grouping method. Firstly, a semi-submersible barge is subjected to bottom sitting operation and berthed to a designated position on the shore; and then a modular transport vehicle is adopted as transfer equipment, and the multiple large-tonnage air floating structures are stably transported to the deck bearing face of the semi-submersible barge from the shore-based transport platform in sequence. In the arrangement process, a preset spacing distance is kept between the large-tonnage air flotation structures, and a shock insulator with a buffering protection function is regularly laid between every two adjacent structure units. The large-tonnage air floatation structures are provided with axially-through prestress holes in advance, during construction, high-strength pre-tightening cables penetrate through the prestress holes of the structures in sequence, hydraulic tensioning devices are installed at the two ends of the pre-tightening cables finally, and tensioning of the pre-tightening cables is achieved by controlling force application parameters of the tensioning devices. Therefore, a plurality of independent large-tonnage air floatation structures are firmly connected to form an integral transportation unit. According to the method, the problem that the efficiency is low when a large-tonnage air flotation structure is transported is effectively solved through a grouping process.

The invention provides a rotary measurement rapid positioning system and method suitable for a multi-tonnage electromagnet, and relates to the field of particle accelerators. The rotary measurement rapid positioning system suitable for the multi-tonnage electromagnet comprises a photogrammetry device, two adjusting devices and a rotating device, wherein the photogrammetry device is arranged on the periphery of the electromagnet. The spatial position of the magnetic coil adjusting platform is adjusted through the three-dimensional adjusting platform, the magnetic coil adjusting platform is controlled through the adjusting control module to adjust the spatial position of the rotary measuring magnetic coil, and due to the fact that an adjusting object is the rotary measuring magnetic coil with the light weight instead of a magnet, direct adjustment of an electromagnet with the large mass is avoided; therefore, the reliability and the efficiency of rotary measurement positioning are improved. In addition, the rotary measurement rapid positioning system can monitor and adjust the deviation, exceeding the range, of the rotary measurement magnetic coil and the electromagnet in the magnetic field measurement process in real time, and the rotary measurement precision is further ensured.

A structure and method for salvaging and relocating marine anchorage foundations are disclosed. The structure includes a powered floating barge and at least one set of synchronous lifting components installed on its deck. Each component consists of a synchronous hydraulic control device, a laterally arranged traction rail, a hydraulic telescopic rod, a traction block slidably mounted on the traction rail, and a polymer cable. The method includes: in the connection step, pushing the traction block to the side of the barge and connecting it to the anchorage foundation; in the lifting step, retracting the hydraulic telescopic rod towards the centerline and horizontally pulling the anchorage foundation away from the seabed via the cable; in the transportation step, towing the anchorage foundation suspended underwater to the target location by the powered floating barge; and in the release step, extending the hydraulic telescopic rod to the side of the barge and lowering the anchorage foundation to the seabed. This invention utilizes seawater buoyancy to reduce the lifting load, eliminates the need for large crane vessels, is low-cost, provides stable operation, and enables precise underwater relocation and reuse of large-tonnage anchorage foundations.

The present invention discloses an overall lifting device and a lifting method for the overall salvage of a large-tonnage sunken ship, and belongs to the technical field of sunken ship salvage. The lifting device includes a crane, a hook, a balance wire, a balance beam and equal-length wires. The hook is arranged at the lower part of the crane, and a plurality of lifting points are arranged on the balance beam. The balance wire is wound around and guided through the hook and the lifting point, and each balance wire is wound around and guided through at least two lifting points. The lower part of the lifting point of the balance beam is provided with equal-length wires, and one end of the equal-length wire is connected to the lifting point, and the other end is connected to the lifting point of the hoisted object. The overall lifting method for the overall salvage of a large-tonnage sunken ship of the present invention is supplemented by connecting steel wire ropes, which can meet the requirement that all lifting points of the heavy object are subjected to the same force. In addition, the hook tying method of the crane can meet the requirements of the crane hook angle when hoisting large-tonnage and large-size heavy objects, effectively protect the crane, and prevent the subsequent crane hook angle from being too large.

The invention relates to the technical field of ship cleaning equipment, in particular to a ship underwater cavitation cleaning system which comprises a device body, and the outer wall of the device body is rotationally connected with a winding roller. When a cavitation intensity sensor automatically detects underwater cleaning requirements of ships of different tonnages, the cavitation effect and the synchronous adjusting effect on cleaning water pressure are enhanced, and through adjustment of a conveying channel assembly and a conveying path switching assembly, an inner cavity of an adjusting box designed in a gradually-shrinking-gradually-expanding flow channel mode can be adjusted to be in a uniform flow state under the action of a spiral flow deflector and a swirl nozzle. The cavitation effect generated by the cleaner body is improved, so that the cavitation intensity sensor feeds back and dynamically adjusts the pressure of the swirl nozzle, the effect of improving the cleaning cleanliness of the underwater cleaning system on impurities at the bottom of the ship is achieved, and cleaning of ships of different tonnages is met without replacing cleaners of different sizes; and self-adaptive monitoring, adjusting and cleaning operation can be carried out on ship machinery with different tonnages.

The application discloses a hierarchical ship collision prevention device and a design method, and relates to the technical field of bridge structure protection. The hierarchical ship collision prevention device comprises a steel floating box capable of self-floating and movably sleeved on a pier; a plurality of air bags capable of being inflated and deflated are divided into two groups and are respectively attached to two collision surfaces of the steel floating box; the top of each air bag is provided with a safety valve in a normally closed state; the safety valve is opened when the bearing capacity of the air bag reaches the limit bearing capacity; and two outer protective plates are respectively arranged on the collision sides of the two groups of air bags. The application also discloses a design method of the hierarchical ship collision prevention device. The air bags completely absorb the collision energy of small typical tonnage ships, and the air bags and the steel floating box 1 jointly absorb the collision energy of large typical tonnage ships. The hierarchical ship collision prevention device and the design method can have strong energy absorption capacity and can avoid the situation that the ship collision prevention device is destroyed after collision.

The utility model discloses a guide pile tip for a large-tonnage sea pile, which comprises a guide pile tip and a guide pile, the guide pile tip is positioned at the bottom of the guide pile, a connecting component is arranged between the guide pile tip and the guide pile, and the top of the guide pile tip is sleeved at the bottom of the guide pile through the connecting component. The connecting assembly comprises a connecting plate and a connecting sleeve, the connecting plate is fixedly installed at the bottom of the guide pile, the connecting sleeve is fixedly installed at the top of the pile tip of the guide pile, a limiting connecting base is fixedly arranged on the connecting plate, and the connecting sleeve is arranged on the limiting connecting base in a sleeving mode. According to the utility model, the connection between the guide pile tip and the guide pile is more stable and reliable, and the stability and the bearing capacity of the whole structure are effectively improved.

The invention discloses a multifunctional integrated oceanographic engineering super-tonnage lifting hook, and relates to the technical field of offshore lifting hooks, the multifunctional integrated oceanographic engineering super-tonnage lifting hook comprises a lifting hook main body structure, the lifting hook main body structure comprises a hook body assembly, a plurality of hook claw components and a heavy-load hook tip, and the plurality of hook claw components are welded on the outer circular wall surface of the hook body assembly; through mutual cooperation of a sliding connecting seat, a load-bearing supporting seat, a trigger rigging, an intelligent control box, a sliding connecting seat, a lifting hook main body structure, a central load-bearing lifting rod and a steering guide wheel, goods in the lifting hook main body structure can be blocked, and the goods are prevented from falling off from the lifting hook main body structure; through mutual cooperation of a main reset spring assembly, a driving push rod, a limiting fixing plate, a wedge-shaped driving block, an auxiliary reset spring assembly, a linkage mounting rod, a clamping lock column, an intelligent control box, a bearing supporting seat, a sliding connecting seat and an anti-off-load steel cable, automatic unhooking operation can be achieved, and the automatic unhooking effect on the lifting hook main body structure is achieved.

The utility model belongs to the technical field of bridge anti-collision, and particularly relates to a bridge anti-collision facility. Comprising a main energy dissipation unit, the inner side and the outer side of the main energy dissipation unit are connected with an inner side auxiliary energy dissipation unit and an outer side auxiliary energy dissipation unit through fixing bases correspondingly, the anti-collision facility has three-level gradient rigidity, and under the conditions of different ship tonnages and ship speeds, the energy dissipation anti-collision units can be sequentially deformed; ship impact energy is absorbed in three stages. Firstly, the inner side auxiliary energy dissipation anti-collision unit generates elastic deformation to absorb a small amount of collision energy; then, the auxiliary energy-dissipation anti-collision units on the outer side generate elastic-plastic deformation, the energy-dissipation buffering materials are gradually compacted, and a medium amount of collision energy can be absorbed, and finally, the main energy-dissipation units generate elastic-plastic deformation, and the internal buffering energy-dissipation materials are gradually compressed, so that a large amount of collision energy can be absorbed. Through energy absorption in three stages, ship collision prevention protection under different collision working conditions can be achieved, and bidirectional protection of the bridge pier and the ship is achieved.

The invention discloses a ship actual load ton continuous dynamic measurement system, which comprises a plurality of measurement devices, a cable, a pulley, a data collector and a data center, and is characterized in that an ultrasonic device and a pressure sensor are integrated in each measurement device. Core measurement components of the device are only an ultrasonic device, a pressure sensor and conventional data collector equipment; the overall cost is low and the economical efficiency is remarkable. According to the invention, the measurement device can be manually and directly controlled to be retracted and released from the ship deck without underwater operation or special hoisting equipment; the folding and unfolding operation is convenient, and the adaptability is high. Data can be collected in real time in the whole cargo loading and unloading process, real-time data support is provided for dynamic regulation and control of loading and unloading operation, and economic losses caused by loading and unloading weight deviation are avoided. According to the invention, a plurality of measuring devices are deployed along the transverse direction of the ship, the data center synthesizes the measurement data of each position, each subtle change of the real load ton is accurately captured, and the accuracy of the measurement data of the real load ton change is improved.

The invention belongs to the technical field of underwater navigation, and discloses a deep sea distribution control large-tonnage buoyancy and trim adjusting device which comprises a seawater motor pump set, an electromagnetic stop valve set and a hydraulic control stop valve set. The hydraulic control stop valves are driven by high-pressure oil to be opened and closed. Compared with a traditional hydraulic control buoyancy adjusting device which needs to operate an external hydraulic system as a power source to open a hydraulic control stop valve, the hydraulic control buoyancy adjusting device has the advantages that the energy accumulator is pre-charged before work in advance, high-pressure oil in the energy accumulator is used for opening the hydraulic control stop valve when the hydraulic control buoyancy adjusting device works underwater, and vibration, noise and the like caused by operation of the hydraulic system can be avoided underwater; the device adopts a modular design, is high in integration level, can realize mutual rapid water adjustment of a bow water tank and a stern water tank to realize trim adjustment by arranging a set of adjusting device on each of the bow and the stern, can be suitable for buoyancy adjustment of a large-tonnage underwater vehicle, and is convenient to maintain and assemble.

The invention provides a ship collision radial gate failure risk method, system and device and a medium, and relates to the field of hydraulic engineering safety assessment. The method comprises the following steps: constructing an index system for radial gate failure risk evaluation; according to the finite element model, simulating the dynamic response after the radial gate is impacted under the conditions of different ship tonnages and ship speeds so as to extract the actual value of each evaluation index; sending the actual value of each evaluation index into a forward cloud generator model to generate a corresponding cloud droplet so as to calculate the membership degree of each evaluation index under different risk levels; adopting an entropy weight method and a variable coefficient method to calculate a combined weight value of each evaluation index, and combining the membership degree to obtain a corresponding basic probability assignment function; and fusing the basic probability assignment functions of different evaluation indexes according to a Dempster combination rule so as to determine a final failure risk evaluation grade of the radial gate under ship collision. According to the technical scheme, the gate failure risk under the dynamic load can be accurately measured.

This invention discloses a safety early warning method and system based on port monitoring data analysis, relating to the field of port safety monitoring technology. The method identifies human figures and mobile work equipment in the land-based work area from port monitoring videos and maps them onto a land-based work area plan. Simultaneously, it acquires data on ship entry and exit and cargo loading / unloading in the port's water-based work area, determining the tonnage and cargo volume of each berthed ship to form a ship / cargo parameter group. The land-based work area plans corresponding to ship / cargo parameter groups with a similarity greater than or equal to preset values ​​are integrated and categorized, and the performance characteristics of the human figure and mobile equipment mapping points are analyzed to derive characteristic parameters. These characteristic parameters are then mapped back to the land-based work area plan to form a plan template for analyzing real-time port monitoring data and issuing safety early warnings based on the analysis results. The above technical solution of this invention achieves port safety early warning and improves the safety of port operations.

The invention discloses a ship hydrostatic performance prediction large model training, deployment and implementation method based on a large model technology. Training a ship hydrostatic performance prediction learning large model according to real sample data of various types, main scales, tonnages and other real ship completion technical data; on the basis of the trained ship hydrostatic performance prediction learning large model, a model structure is adjusted, and a ship hydrostatic performance prediction large model is constructed for deployment; and inputting ship design elements and variable prediction tasks into the ship hydrostatic performance prediction large model to predict ship hydrostatic performance indexes. According to the method, designers can be replaced to complete ship hydrostatic performance estimation work, the working efficiency and level are improved, and basic service is provided for a ship concept designer (intelligent agent) based on artificial intelligence.

The application provides a ship collision arc gate failure risk method, system, device and medium, and relates to the field of water conservancy engineering safety evaluation. The method comprises the following steps: constructing an index system for evaluating the failure risk of the arc gate; simulating the dynamic response of the arc gate after being hit by ships under different ship tonnages and ship speeds according to a finite element model, so as to extract actual values of various evaluation indexes; sending the actual values of the various evaluation indexes into a forward cloud generator model to generate corresponding cloud droplets, so as to calculate the membership degrees of the various evaluation indexes under different risk levels; calculating the combined weight values of the various evaluation indexes by using an entropy weight method and a variation coefficient method, and combining the membership degrees to obtain corresponding basic probability assignment functions; and fusing the basic probability assignment functions of the different evaluation indexes according to a Dempster combination rule, so as to determine the final failure risk evaluation grade of the arc gate under the ship collision. The technical scheme can accurately measure the failure risk of the gate under the dynamic load.

The optimization system provided by the invention comprises model construction and a rolling scheduling optimization algorithm, in the rolling scheduling optimization algorithm, when the number of ships is large, a heuristic algorithm is selected for solving, all the ships are grouped according to the arrival date, all the ships arriving in one day are scheduled together, and the scheduling efficiency is improved. The port entering sequence and berth distribution of the arriving ships on the second day are influenced by the scheduling result of the scheduled ships on the previous day; the following basic assumptions are made to simplify the construction process of the optimization model: all berths are discrete berths; the predicted arrival time, the workload and the tonnage of the container ships arriving at the same day are known in advance; the operation efficiency of the quay crane of each berth is fixed; ship sailing in the same direction cannot follow over. According to the method, a scheduling optimization model with the purpose of minimizing the total waiting time is established. The provided multi-round rolling scheduling algorithm can effectively solve the optimal scheduling scheme of continuously arriving ships within a period of time, and the channel utilization rate is improved.

The utility model discloses a non-structural seawater tank which comprises a seawater pipe used for containing seawater, the seawater pipe is vertically and fixedly connected with a ship body in a penetrating mode, and the lower end of the seawater pipe is communicated with a water through hole formed in a shell of the ship body. The seawater suction pipe is used for sucking seawater into the seawater pipe, is fixedly connected with the outer side wall of the seawater pipe and is communicated with the upper part of the inner cavity of the seawater pipe. The large-drift-diameter seawater pipe is used for replacing the function of a seawater tank of a traditional structure, the occupied space, the tonnage, the construction cost and the design difficulty of the seawater tank part are reduced, and the utilization rate of the cabin capacity and the tonnage is improved. The seawater tank can be suitable for replacing an emergency fire pump cabin seawater tank of a large ship or other seawater tanks with small water pumping amount.

This invention relates to a pier / platform anti-collision device. The device includes: a main energy-dissipating structure comprising a steel casing that surrounds the pier / platform, and isolation components arranged on the outer wall of the inner side of the steel casing; an auxiliary energy-dissipating structure comprising a flexible bladder surrounding the steel casing, energy-dissipating particles filled in the cavity inside the flexible bladder, and a diffusion block adhering to the surface of the flexible bladder facing away from the steel casing; and a locking device for fixing the steel casing to the pier / platform. The auxiliary energy-dissipating structure of the device can withstand multiple impacts from small-tonnage vessels while protecting the main energy-dissipating structure from damage. After being impacted by small-tonnage vessels, the auxiliary energy-dissipating structure can be easily maintained or replaced, thereby reducing the repair or replacement costs during the use of the pier / platform anti-collision device and extending its service life.