154 results about "Offshore construction" patented technology

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 present invention discloses a method for offshore construction of an extra-large single pile: by using a full-rotation crane vessel, a jack-up pile-stabilizing platform, a set of main hoisting ropes of a balance beam, and a set of auxiliary hoisting ropes of a pile-turning clamp, and adopting the method of single-vessel single-hook stern lifting, the offshore construction of the extra-large single pile is realized. Among them, the main and auxiliary hoisting riggings of the single pile are installed by berthing the transport ship parallel to the crane vessel, and the transport ship is rotated to the stern position convenient for the crane vessel to lift through the main hoisting machine and cable ropes of the crane vessel, so as to realize the lifting, turning over and pile driving of the extra-large single pile, giving full play to the construction flexibility of the crane of an ordinary full-rotation crane vessel and the lifting capacity of the fixed stern lifting of the crane, alleviating the contradiction of the shortage of construction vessels and machinery for extra-large single piles in China, and optimizing the single-pile construction process to improve work efficiency.

The invention relates to a temporary fixing device for an offshore photovoltaic net rack. The temporary fixing device is suitable for rapid positioning and temporary fixing of a pile foundation in the net rack hoisting process. The device comprises a connecting node, an inverted cone, a shell, a wedge-shaped sliding block and the like, a temporary fixing device is welded to the lower portion of the connecting node, in the net rack hoisting and falling process, the inverted cone achieves automatic positioning under the action of a guide plate, and after the shell enters a pile foundation, the wedge-shaped sliding block automatically pops up and is limited and fixed under the action of a compression spring; the temporary fixation of the upper net rack is realized; the structure is in a pure mechanical mode, manual intervention is not needed, the wind load influence can be effectively resisted, and the hoisting operation efficiency and the offshore construction safety are improved.

The utility model relates to the technical field of building construction, in particular to a climbing device of a cross-sea main tower formwork construction platform, which comprises a hanging seat fixed on a formed concrete foundation, a guide rail fixed on the hanging seat and arranged along the climbing direction of a formwork platform, and a bearing tripod capable of climbing along the guide rail, the climbing mechanism is used for driving the bearing tripod to move. The stand columns and the guide rails are in wrapping design, the stand columns can be attached to the guide rails more tightly, and the distance between the stand columns and the guide rails is greatly reduced. By means of the close fit design, shaking under the action of external factors such as wind power is reduced, the distance between the bearing tripod and a building is reduced, and the overall stability of the formwork platform is remarkably improved. Especially in offshore construction, canyon bridge construction and extra-high pier foundation construction, the design can effectively resist influence of sea wind, canyon wind and wind power in the pier construction process, shake of the formwork platform is reduced, and construction safety and stability of construction equipment are guaranteed.

The invention provides an adjustable floating wind power foundation based on reinforcement learning and a modular construction method, and belongs to the technical field of offshore wind power. Comprising a fan, and the bottom of the fan is fixed to a tower drum; the bottom of the tower drum is fixedly connected with the floating base; the floating base comprises a first buoy, a second buoy and a third buoy which are arranged in a triangular shape; wherein the bottom of the tower drum is fixedly connected with the first buoy; the first buoy, the second buoy and the third buoy are fixedly connected through supporting steel pipes; the tower drum is fixedly connected with the second buoy and the third buoy through inclined supports; the buoy is further connected with an anchor chain, and the other end of the anchor chain is connected with the suction barrel and anchored to the seabed through the suction barrel. By adopting a coupling connection mode of the inclined support, the tower drum and the floating drum, the storm resistance of the whole structure is improved. A steel-concrete composite structure is adopted, the steel consumption is reduced, and the material cost is reduced. A modular construction method is adopted, the offshore construction time is greatly shortened, and the influence of weather and sea conditions on engineering is reduced.

The utility model provides an offshore photovoltaic platform structure provided with a box transformer substation platform and a cable trestle. The offshore photovoltaic platform structure comprises a steel truss platform erected on the sea. The steel pipe piles are connected with the steel truss platform and used for supporting the steel truss platform, and the steel truss platform and the steel pipe piles are connected through inclined strut units; the photovoltaic module is laid in the steel truss platform; the box transformer substation platform is arranged on the north side of the steel truss platform; and a cable trestle is arranged on the steel truss platform. The box-type transformer substation platform installed on the steel truss platform is adopted, a traditional box-type transformer substation platform is often separated from a photovoltaic support, independent piling is needed, the box-type transformer substation platform is integrated on the steel truss platform, steel and offshore construction operation procedures are reduced, and the purposes of convenient construction and low cost are achieved.

The invention belongs to the field of offshore construction, and relates to a self-elevating offshore auxiliary pile pulling platform which comprises a platform ship system, a counterweight system and a pile pulling system, the platform ship system comprises a ship body, a ship bow and a ship stern, a pile leg is arranged in the ship body in a penetrating mode, a pile shoe is arranged at the bottom of the pile leg, and a platform posture monitoring device and a pile leg lifting control device are arranged on the ship body; a cabin is arranged in the ship body, the counterweight system is arranged in the cabin and comprises a rail, a flat car, a counterweight and a crane, the pile pulling system comprises a pile pulling platform module, the pile pulling platform module is connected with a stern through a hydraulic push-pull device, a pile pulling mechanism is arranged on the pile pulling platform module, and the pile pulling mechanism performs pile pulling operation on a pile foundation. The pile pulling cooperative control center can collect parameters such as upward pulling force and upward pulling speed in real time in the pile pulling process and can adjust the pile pulling speed of the auxiliary pile pulling operation to be consistent with the pile pulling speed of the main offshore self-elevating working platform, and the safety of the pile pulling platform and the working platform is guaranteed while the pile pulling effect is maximized.

The utility model discloses a profile steel frame water photovoltaic support system, which comprises a photovoltaic assembly, a profile steel frame and a support structure which are sequentially connected from top to bottom, the photovoltaic assembly is composed of a plurality of photovoltaic panels. The profile steel frame is formed by splicing a plurality of frames shaped like a Chinese character'ri ', and two photovoltaic panels are arranged on each frame shaped like the Chinese character'ri'; each photovoltaic panel is suspended and fixed above the profile steel frame in a manner of being parallel to the profile steel frame through a plurality of fixing buckles arranged on the frame shaped like the Chinese character'ri '; the bottom of the profile steel frame is fixed to the supporting structure through a connecting assembly. The connecting assembly comprises a single-claw connecting claw, a double-claw 90-degree connecting claw and a four-claw connecting claw. The profile steel frame water photovoltaic supporting system is reasonable in structural design and has the advantages of being convenient to construct, accelerating the construction progress and reducing the construction cost, full-assembly connection can be achieved only by conducting simple bolt butt joint and fixing on the profile steel frame and the supporting structure in the offshore construction part, the construction period is greatly shortened, and the construction safety risk is reduced.

The utility model discloses a single pile internal integrated suspension platform for deep sea fishery breeding, which comprises at least one layer of suspension platform, the suspension platform is suspended below an original working platform in a single pile, if multiple layers of suspension platforms exist, the suspension platforms are sequentially and downwards suspended below the working platform, and every two platforms are communicated with each other. According to the utility model, a large enough working area can be provided in the single pile for arrangement, operation and maintenance of culture equipment, and enough operation space is provided for fish collection and other culture work without occupying the original space of an inner platform and a tower barrel platform of the single pile. Meanwhile, the integrated suspension platform is integrated with a single-pile inner platform, can be hoisted together with the inner platform in the offshore construction stage, does not occupy extra ship engine resources, and has the advantage of low construction cost.

The invention provides a construction technology of a full-assembly type marine disaster comprehensive monitoring platform, and belongs to the technical field of monitoring platform construction, and the construction technology comprises the steps: 1, executing a construction measurement technology for the full-assembly type marine disaster comprehensive monitoring platform; 2, executing a prefabricated part shipping process for the full-assembly type marine disaster comprehensive monitoring platform; and step 3, executing an overwater installation process for the full-assembly type marine disaster comprehensive monitoring platform. Based on the construction engineering practice of a comprehensive marine disaster prevention and control system and aiming at the characteristics of heavy storm, rapid water flow, large component volume and high installation precision requirement of offshore construction of the comprehensive marine disaster monitoring platform, an innovative process covering the whole process of construction measurement, prefabricated component transportation and overwater installation is provided; the key technical problems of prefabrication, transportation and hoisting of open-sea large components are solved, the construction quality and safety of a monitoring platform are guaranteed, and the open-sea engineering construction efficiency is improved.

A connector assembly 200 for connecting two pipe sections. The pipe sections may be used in offshore construction such as offshore oil and gas exploration and offshore wind turbine generators. First 201 and second 202 connector elements adjoin first and second pipes and are couplable together. A circumferential recess 204 is defined by the connector elements and a locking ring 203 fits in the recess 204 to lock the connector elements. Engaging elements 205 of the connector elements engage with the locking ring 203. Overlapping members 206, 207 of the connector elements form a lap joint when the connector elements are coupled. In one aspect, the engaging elements extend over the region of overlap of the overlapping members. In another aspect, there is a substantially consistent spacing between upper and lower profiles of the locking ring and upper and lower corner edge profiles of the recess. This may contribute to a reduction in stress and mitigate fatigue.

The utility model belongs to the technical field of offshore construction, and discloses a special-shaped pipeline hoisting device which comprises an upper hoisting sling unit, a hoisting frame main body and a lower hoisting sling unit, the upper hoisting unit is configured to be connected with ascending hoisting equipment, the hoisting frame main body comprises two hoisting frames which are arranged at an included angle, and each hoisting frame is connected to the upper hoisting unit; the lower hoisting unit comprises a plurality of hoisting assemblies arranged at intervals in the horizontal direction, and each hoisting assembly is arranged between the hoisting frame body and the special-shaped pipeline. The hoisting assembly comprises a hoisting rope, a dynamometer and a hoisting belt, the hoisting rope is connected between the hoisting belt and the hoisting frame, the dynamometer is arranged on the hoisting rope and can measure the value of tension borne by the hoisting rope, and the hoisting belt is annularly arranged on the special-shaped pipeline. The distance between the hoisting frame and the special-shaped pipeline is adjusted according to the tension value measured by the dynamometer, so that stress balance of hoisting of the special-shaped pipeline is ensured, deformation and damage of the special-shaped pipeline are prevented, and smooth proceeding of follow-up construction is ensured.

The application relates to an actuator of a quick-response and high-precision telescopic positioning system, the electromagnetic valve comprises a valve body, a valve core and a spring, and the electromagnetic valve comprises a base platform, a hydraulic cylinder and an electromagnetic valve, and further comprises a control system and a protection system; the control system judges and levels the inclination of the base platform through a horizontal judging mechanism and a power-on control module; the protection system provides multiple protections for the lifting of the base platform through an induction module, a backup control module and a backup locking valve. Due to the adoption of the above technical scheme, the inclination of the offshore base during the construction process is reduced to a certain extent, so that the safety of offshore construction is ensured to a certain extent.

This invention discloses an autonomous vessel and a method for maintaining a precise position or trajectory during offshore operations (e.g., cable or pipe laying or offshore construction installation). The vessel includes multiple externally anchored mooring lines, a winch system with tension sensors, a position sensor, and a control system. The control system processes position and tension data to detect deviations caused by environmental forces such as wind, waves, or ocean currents. In response, the control system activates the winch system to adjust the length of the mooring lines, counteracting forces caused by different environmental factors and achieving controlled maneuvering within the mooring area. An optional artificial intelligence module can learn from historical data to predict dynamics and optimize adjustments along predetermined waypoints. Compared to traditional dynamic positioning systems, this reduces fuel consumption, improves accuracy, and minimizes risk. It is applicable to vessels such as barges or installation platforms.

The utility model relates to the technical field of cofferdam construction, in particular to a measurement auxiliary instrument for cofferdam offshore construction. The device comprises a GPS measuring rod, a stabilizing support used for stabilizing the GPS measuring rod and a lifting rope with the free end fixedly connected to the support, and the fixed end of the lifting rope is fixedly connected to a winding mechanism used for winding the lifting rope. The device is simple to manufacture, can be repeatedly used, is convenient to mount, dismount and use, and has better durability; the GPS measuring rod of the device can stably stay on the upper surface of the thrown and filled stone, the GPS measuring rod is prevented from deviating from the measuring position due to underwater surge, and then the precision of measuring the riprap elevation is improved.

The invention relates to the technical field of offshore construction, in particular to an offshore open tubular pile penetration hammering force and soil plug monitoring and protecting system and a monitoring method. Comprising a hammering force monitoring module arranged at a pile top opening, a soil plug height dynamic monitoring module and a protection module. The soil plug height dynamic monitoring module comprises an absolute soil plug height monitoring mechanism and a relative soil plug height monitoring mechanism, the absolute soil plug height monitoring mechanism is located above the relative soil plug height monitoring mechanism, the absolute soil plug height monitoring mechanism makes contact with the relative soil plug height monitoring mechanism, and the relative soil plug height monitoring mechanism makes contact with the surface of the soil plug; the protection module is arranged in the axial direction of the open pile and wraps the sensor on the inner wall of the pile body. The efficiency and safety of offshore large-diameter open steel pipe pile sinking construction are improved, accurate data support is provided for construction control by monitoring key parameters in real time, and construction risks are reduced.

The invention discloses a submarine pipeline novel repair technology construction multifunctional dragging head which comprises a shell, a pull rod and a tension sensor, the shell comprises a first shell body, a second shell body, a third shell body and an inner shell body, the two ends of the second shell body are connected with the first shell body and the third shell body respectively, the inner shell body is arranged in the first shell body, the inner shell body is in a hemispherical shape, and the pull rod is arranged in the inner shell body. An inner cavity of the first shell is in a hemisphere shape matched with the inner shell, the inner shell can slide in a hemisphere shape relative to the first shell, the first shell and the inner shell are provided with through holes corresponding to the pull rod, the pull rod stretches into the inner shell through the through holes and is rotationally connected with the inner shell, a tension sensor is arranged in the second shell, and the third shell is connected with the tension sensor. According to the invention, in offshore construction and simulation test scenes, the multi-elbow complex-path subsea pipeline can be adapted, in-pipe visual detection and dragging tension data acquisition are synchronously realized, and support is provided for operation safety assessment, process optimization and fault pre-judgment.

The invention provides an offshore bottom water thin mutual reservoir fracturing parameter design method, and relates to the technical field of oil and gas exploitation, the method comprises the following steps: S1, determining vertical distribution of a reservoir section mud layer, a sandstone layer and a water layer according to logging data, and establishing a target well section crustal stress and rock mechanics profile; s2, acquiring the fracture toughness of rocks with different shale contents under different stresses to obtain a corrected fracture toughness profile; s3, according to the fracture half length, the fracturing displacement, the critical mudstone layer penetrating thickness corresponding to the fracturing fluid viscosity and the penetrating layer fracture height of the reservoir are initially calculated, and parameters needed for avoiding a water layer and fully transforming a thin interbed are obtained; s4, according to the fracture flow conductivity, the sand amount and the sand-carrying fluid amount are calculated initially; s5, the liquid efficiency is determined according to block fracturing historical data, the prepad fluid proportion range is initially calculated, and the prepad fluid amount is calculated; and S6, optimizing parameters through numerical simulation, and determining final fracturing parameters and a pump injection program. According to the method, the requirements of geological and offshore construction can be met, and the optimal fracturing scheme and the optimal pumping program can be rapidly determined.

The present invention provides a prefabricated coating and anti-corrosion construction method for wind turbine tower corrosion protection, which relates to the technical field of corrosion protection of the outer wall of offshore wind turbine tower pile foundations. The prefabrication method prepares an anti-corrosion structure for the outer wall of a wind turbine tower, including a wind turbine tower, wherein a rolling frame is symmetrically provided at the lower end of the wind turbine tower, an electric rotating device is provided at the center of a side wall near the wind turbine tower, a brush is provided at the upper end of the side wall of the electric rotating device near the side wall of the wind turbine tower, and a second layer of corrosion protection strip and a first layer of corrosion protection strip are provided on the side wall of the electric rotating device. By adopting this process flow, prefabrication on land can completely avoid the occurrence of various dangerous situations during offshore construction, and the mechanical strength of the formed coating and corrosion protection structure is much higher than that of traditional coating and corrosion protection technology, thereby realizing the coating and corrosion protection technology innovation of "prefabrication on shore and piling in the sea".

This invention relates to the field of marine engineering safety early warning and intelligent prediction, and in particular to a point-to-area short-term wave height prediction method and system for offshore construction early warning. The invention takes historical pattern wave height, historical reference monitoring wave height, and future pattern wave height of a measurement point as inputs. It constructs a short-term prediction model based on a Transformer encoder and introduces a joint loss function including absolute error, large value underestimation penalty, trend asymmetry, residual, and peak time terms to automatically output the future correction results for each measurement point. Then, based on the mapping relationship between the measurement point and the corresponding coverage area, the correction results of the measurement point are extended to the entire target area to form a corrected wave height field. Combined with construction thresholds, it automatically determines the levels of normal, attention, alert, and work stoppage. Without requiring continuous manual interpretation, it forms a complete closed loop from data acquisition, regional analysis, prediction, regional correction to graded early warning and result storage and push.

The invention discloses a mudflat photovoltaic workboat. The mudflat photovoltaic workboat comprises a boat body; the telescopic propelling device is arranged at at least one end of the ship body and comprises a telescopic device, a soil piercing device and a variable amplitude device, one end of the telescopic device is directly or indirectly hinged to the ship body, the other end of the telescopic device is directly or indirectly connected with the soil piercing device, and one end of the variable amplitude device is directly or indirectly hinged to the ship body; and the other end is directly or indirectly hinged to the telescopic device. The telescopic device can be driven to rotate through the amplitude changing device, and the telescopic device can drive the soil pricking device to act. When the amplitude changing device drives the telescopic device to rotate, the soil piercing device pierces into the mud flat, the telescopic device extends, and the ship body can be pushed to walk on the mud flat. According to the construction method, the operation problem of offshore construction in the tidal flat photovoltaic low tide is fundamentally solved, the current situation that large-scale construction cannot be carried out on sludge is changed, the possibility is provided for transportation and construction in an offshore sludge area, and the construction efficiency is improved.

The application discloses a marine photovoltaic construction ship, comprising a ship body, a marine crane arranged on the ship body, a pile sinking positioning frame positioning tool arranged on the ship body and having a tool positioning groove for positioning each anti-sinking plate of the pile sinking positioning frame, a foundation pile positioning tool arranged on the ship body and having a foundation pile positioning groove for positioning the foundation pile, and a photovoltaic unit positioning tool arranged on the ship body and having a support leg positioning cylinder for positioning the support leg of the photovoltaic unit. The application can hoist the foundation pile, the pile sinking positioning frame and the photovoltaic unit by itself at a wharf without setting a ship loading crane. After arriving at a marine construction site, the marine photovoltaic construction ship can replace a floating crane to perform the pile sinking operation of the foundation pile. The marine photovoltaic construction ship provided by the application has the functions of a ship loading crane, a transport ship and a construction ship, reduces the number of construction ships and lowers the construction cost.

The invention belongs to the field of offshore photovoltaic technologies, and particularly discloses an offshore photovoltaic auxiliary installation device and an integrated installation method. The structure comprises an offshore photovoltaic structure, a mounting platform and an in-situ hydraulic lifting device, wherein the offshore photovoltaic structure consists of a photovoltaic bracket, a cylindrical foundation with an opening in the lower end and a supporting upright post; the installation platform is integrated with a positioning system, a multi-beam sonar and other sensors; the in-situ hydraulic lifting device is driven by a hydraulic oil cylinder to achieve synchronous lifting of the structure, enters water through multi-beam sonar scanning and anchoring positioning, and sinks to enter mud through negative pressure driving and moves out of the platform by pumping and draining seawater in the barrel type foundation. A traditional pile foundation is replaced through an integrated transportation and installation technology, the problems that offshore construction procedures are many, cost is high, and the water depth is limited are solved, different water depths and geological conditions can be adapted, the installation difficulty is remarkably reduced, the construction period is shortened, and the stability and efficiency of photovoltaic installation in the deep water area are improved.

The invention discloses a shallow sea landing leg type floating multifunctional platform and an operation method, and belongs to the technical field of shallow sea exploration construction equipment.The shallow sea landing leg type floating multifunctional platform comprises a platform frame module, a hydraulic lifting module, a floating body module and a supporting module, the floating body module is arranged in the platform frame module, and the supporting module is connected with the platform frame module in a guiding mode; the platform frame module is lifted in the direction of the supporting module through the hydraulic lifting module. The platform is suitable for engineering investigation of different sea conditions or lakes, the platform hydraulic station provides power for the diesel engine, operation is easy, a frame structure is adopted, stability and reliability are achieved, construction is not affected by tides and small stormy waves, the working efficiency and the working quality are improved, and the safety of offshore construction operation is greatly improved; and meanwhile, the device integrates the advantages of modular design, quick assembly, light weight, low cost and stable work, and can meet the requirements of shallow sea or lake engineering investigation.

The invention discloses pile sinking positioning equipment and method for a floating type fan foundation, and relates to the technical field of ocean engineering. The pile sinking positioning equipment comprises a supporting frame, a guide assembly and a translation adjusting mechanism; the supporting frame is used for providing a supporting reference after initial positioning is achieved on a seabed. The guiding assembly is movably arranged on the supporting frame and used for positioning and guiding the mooring anchor pile. The translation adjusting mechanism is arranged between the supporting frame and the guide assembly and used for driving the guide assembly to move in the first direction and the second direction in the horizontal plane relative to the supporting frame. By arranging the bottom-supported supporting frame and the translation adjusting mechanism, the final positioning accuracy of the mooring anchor pile can be stably controlled within the required range through accurate translation adjustment under the condition that large errors exist in initial positioning, the underwater construction positioning accuracy of the mooring anchor pile of the floating type draught fan can be improved, and the underwater construction positioning accuracy of the mooring anchor pile of the floating type draught fan can be improved. And meanwhile, the offshore construction difficulty and the mooring cost are reduced.

The utility model discloses a simple submarine cable transportation device in the technical field of offshore construction, the simple submarine cable transportation device comprises a supporting base, a plurality of rollers are fixedly connected to the lower surface of the supporting base, an arc-shaped plate is fixedly connected to the upper surface of the supporting base, and the arc-shaped plate is used for lifting a submarine cable and preventing the submarine cable from falling off from the supporting base in the transportation process. According to the scheme, the problem of surface damage possibly caused by ground friction in the submarine cable construction transportation process is solved.

The present application belongs to the field of offshore construction, and relates to a self-elevating offshore auxiliary pile pulling platform, which comprises a platform ship system, a counterweight system and a pile pulling system. The platform ship system comprises a ship body, a bow and a stern. A pile leg is arranged through the ship body, and a pile shoe is arranged at the bottom of the pile leg. A platform posture monitoring device and a pile leg lifting control device are arranged on the ship body. A cabin is arranged in the ship body, and the counterweight system is arranged in the cabin and comprises rails, flat cars, counterweights and a crane. The pile pulling system comprises a pile pulling platform module, which is connected to the stern through a hydraulic push-pull device. A pile pulling mechanism is arranged on the pile pulling platform module, which performs pile pulling operation on the pile foundation. A pile pulling cooperative control center can collect parameters such as pulling force and pulling speed in real time during the pile pulling process, and can adjust the pulling speed of the auxiliary pile pulling operation to be consistent with the pulling speed of the main offshore self-elevating operation platform, so as to maximize the pile pulling effect while ensuring the safety of the pile pulling platform and the operation platform.

The application relates to a method for installing and constructing an offshore wind turbine jacket, which can quickly determine whether the jacket is blocked during lowering by judging whether the sling is not stressed, the jacket is not lowered to the design elevation or the jacket is inclined; if the jacket is blocked, a tugboat is controlled to apply a transverse force to the low point of the jacket, so that the lateral extrusion surface of the pile wall of the pile of the insertion tip and the foundation pile is directly separated, the static friction balance is broken, and the gap between the insertion tip and the pile wall is enlarged; the main hook synchronously applies a vertical lifting force, and the jacket is quickly pulled out of the blocking position after the gap is formed. The combined effect of the lateral separation and the vertical pulling of the application can more efficiently break through the blocking threshold, reduce the hard friction damage between the pile wall and the insertion tip, and shorten the unblocking time. The scheme of the application uses two types of conventional offshore construction equipment, i.e., a crane ship main hook and a tugboat, without the need of customizing special devices, and the cooperative operation of the tugboat and the crane ship does not need complex linkage control, so that the equipment investment cost is reduced.

The application discloses a kind of sea survey operation platform devices, it is related to offshore construction surveying technical field, including engineering pile, ladder and surveying column, the bottom end of the engineering pile is provided with flat link, the top of the engineering pile is installed with stiffened plate, the top of the engineering pile is installed with contact beam, and multiple crawling crossbars are installed in the inner wall of contact beam, the upper walkway is arranged above the contact beam, the top of the engineering pile is installed with surveying column, the top of the surveying column is provided with fixed slot, the top of the surveying column is provided with forced counterweight disc, and mounting bracket is welded on the outer wall of forced counterweight disc, the inner wall of mounting bracket is provided with mounting mechanism for fixing, the middle position of forced counterweight disc is provided with air slot, the device is rotated positioning bolt through work type frame and extends to mounting bracket position, and then forced counterweight disc is fixed at surveying column, so as to be convenient for quick installation and fixing, save installation time.

The present application relates to the field of foundation construction technology, and discloses a method and system for intelligent construction of super-large anti-collision box cofferdams at sea, the method comprising: real-time collection and fusion of multi-source heterogeneous sensor data, optimizing and generating control instructions based on the current state and target trajectory, and continuously executing the control instructions until the position and attitude deviations meet the preset thresholds and are stably maintained, for monitoring the health status of the components and dynamically reconstructing the control strategy in the event of failure. The system comprises: an embedded autonomous hardcover system, which is integrated into the anti-collision box body and consists of the following modules: a multi-source perception module, an onboard collaborative AI decision module, and an active attitude control module, whose actuators include omnidirectional thrusters and a dynamic ballast water system. The present invention achieves high-precision, anti-disturbance intelligent lowering and positioning of super-large components at sea through a high-speed and robust perception-decision-execution closed loop, thereby improving the efficiency and safety of offshore construction.