36 results about "Cross sea" patented technology

The present application relates to the field of geodetic surveying, and particularly relates to a method for determining altitude based on GNSS frequency signals of Chinese space station. Through obtaining data such as GNSS satellite precise orbit, clock error and earth rotation parameters from IGS analysis center, RINEX format data is obtained by using synchronous observation of space station and ground station receiver, and the gravity potential of space station observation moment is determined in combination with EIGEN-6C4 gravity field model. The frequency observation value is derived from the carrier phase observation value, the observation equation is established in the dual-frequency ionosphere elimination processing mode, the gravity potential difference between space station and ground station is solved, and finally the gravity potential and altitude of ground station are obtained. The present application can replace the traditional leveling and gravity measurement, significantly reduce the cost, overcome the environmental restriction, and support the cross-sea and cross-ocean height transfer and the global height datum unification.

The application relates to a three-dimensional abnormal wave synchronous coupling generation system, method and medium in cross sea conditions, and belongs to the technical field of ocean engineering. The application comprises a parameter calculation module, a wave system coupling module configured to generate a three-dimensional abnormal wave in a physical space position based on coupling growth characteristics between wave systems and expected generation; a scene adaptation module configured to convert a wave number spectrum into a spatial wave surface form for a numerical simulation scene, and perform wave evolution simulation; and a wave making control module configured to convert a processed time sequence into a motion control signal of a wave making device according to driving characteristics of the wave making device, and drive the wave making device to generate the three-dimensional abnormal wave. The application realizes energy efficient focusing through coupling modulation instability, accurately controls the spatial form of the three-dimensional abnormal wave, simultaneously adapts numerical simulation and physical test scenes, and meets diversified demands of ocean engineering on extreme wave simulation.

The invention relates to a static light long-distance sea-crossing permanent railway and highway floating bridge, which is a fundamental change for the design thought of building a long-distance sea-crossing permanent bridge. The biggest problem to be solved is that piers do not need to be built on straits and seabed, the construction difficulty and work amount of cross-sea bridge construction are greatly reduced, and the influence on the straits ecological environment is small. The technical key points are as follows: 1, N relatively static floating islands are built by utilizing seawater buoyancy, the floating islands are synthesized from cheap materials, and bridges are erected on the floating islands; 2, each floating island is formed by uniformly distributing m seabed stainless steel wire ropes on the left side and the right side of the floating island, straightening and firmly holding the seabed stainless steel wire ropes, and the m stainless steel wire ropes are wound and tied on the m reinforced concrete blocks sinking into the seabed respectively; and 3, the absolute horizontal height of the floating island is not changed. The floating island does not freely float on the water surface, and at the lowest tide level, the buoyancy ensures that the m strands of stainless steel wire ropes have moderate tension. And 4, the core principle is as follows: mechanical balance, namely buoyancy F1 = borne bridge gravity G + tensile force F2 of a seafloor stainless steel wire rope.

The invention discloses a sea-crossing cluster assembly type bridge rapid assembly device, and relates to the technical field of bridge construction, the sea-crossing cluster assembly type bridge rapid assembly device comprises a supporting and walking mechanism, and the supporting and walking mechanism comprises a supporting frame and supporting beams arranged on the two sides of the supporting frame; the hoisting mechanism is located in the supporting frame, can move transversely and is used for hoisting and transversely conveying the bridge prefabricated part; the at least one pair of retractable stabilizing mechanisms is symmetrically arranged on the supporting beam and is used for downwards extending out and being inserted into the ground to stabilize the whole equipment during hoisting operation; and a first hydraulic rod, a sliding frame, an inserting plate, a limiting sliding block and a limiting hole are arranged to be matched with one another, and the active stabilizing function of the equipment is achieved. The first hydraulic rod pushes the inserting plate to move downwards along the sliding frame, meanwhile, the limiting sliding block on the inserting plate slides and guides in the limiting hole of the supporting frame, it is ensured that the inserting plate is perpendicularly inserted into the ground, and the effect of firmly anchoring the equipment on the foundation is achieved.

This invention relates to the field of intelligent building construction technology, specifically disclosing an intelligent generation system for modular scaffolding erection schemes. The system includes an engineering geometric parameter analysis device, a wind field dynamic simulation device, a physical information neural network prediction device, a wind-resistant reinforcement zone generation device, and a real-time meteorological data access device. By integrating computational fluid dynamics with a neural network embedded with physical constraints, based on a three-dimensional building model and real-time meteorological data, it dynamically predicts wind-induced vibration risks and automatically generates wind-resistant reinforcement schemes conforming to the modular rules of scaffolding. By employing the above technical solution, this invention enables high-precision wind vibration early warning and intelligent optimization of scaffolding systems in extreme environments such as super high-rise buildings or cross-sea structures, improving their inherent safety level and construction feasibility.

The invention discloses a railroad bed capable of being frozen on the sea level, and relates to the technical field of ocean engineering and railway transportation. The railway roadbed comprises a roadbed body, the roadbed body is of a hollow box structure capable of floating on the water surface, and steel rails are laid on the top face of the roadbed body. A reinforcing support structure is arranged below the steel rails in the roadbed main body, comprises a truss bearing wall and a steel rail bearing platform, and is used for supporting a load; lateral buoyancy supporting assemblies are arranged on the two sides of the roadbed body and used for providing auxiliary buoyancy and balance. The floating characteristic of the hollow box body is utilized, the hollow box body is laid on the sea surface before freezing in winter, the hollow box body and an ice layer are frozen into a whole after seawater is frozen, and train passing is achieved by directly utilizing the bearing capacity of the ice layer. The roadbed has the advantages of high structural strength, good transverse stability and the like, and can be disassembled and dragged away after sea ice melts in summer, so that the smoothness of a channel is ensured, the seasonal limitation is effectively broken through, and the cross-sea transportation cost is reduced.

The invention relates to a synchronous coupling generation system and method for three-dimensional abnormal waves in cross sea conditions and a medium, and belongs to the technical field of ocean engineering. Comprising a parameter calculation module; the wave system coupling module is configured to combine with a physical space position for generating a three-dimensional abnormal wave based on coupling growth characteristics between wave systems; the scene adaptation module is configured to convert a wave number spectrum into a spatial wave surface form for a numerical simulation scene and perform wave evolution simulation; and the wave making control module is configured to convert the processed time sequence into a motion control signal of the wave making equipment according to the driving characteristics of the wave making equipment, and drive the wave making equipment to generate three-dimensional abnormal waves. Efficient energy focusing is achieved through coupling modulation instability, the spatial form of three-dimensional abnormal waves is accurately controlled, meanwhile, numerical simulation and physical test scenes are adapted, and the diversified requirements of ocean engineering for extreme wave simulation are met.

The invention discloses a method and a system for correcting the local scouring depth of a bridge foundation by considering the combined action of wave flow. The method comprises the following steps: calculating the depth of a local scouring pit of a bridge pier under the action of pure water flow; correcting the local scouring pit depth of the pier under the action of the pure water flow by utilizing an increasing coefficient of the local scouring depth under the influence of waves to obtain the local scouring pit depth of the pier under the combined action of the wave flow; the increasing coefficient is calculated according to the tidal current speed, the maximum speed of a horizontal mass point at the bottom of the seabed and the KC number. According to the method, the calculation precision is improved, the risk caused by small calculation value of local scouring of the sea-crossing bridge foundation is reduced, and the bridge safety is guaranteed.

The invention discloses a sub-cofferdam construction method for cross-sea tunnel construction, which comprises the following steps: S1, constructing a first sub-cofferdam, reserving a first channel, and constructing a first sub-cofferdam tunnel in the first sub-cofferdam; s2, after tunnel construction of the first sub-cofferdam is completed, the first sub-cofferdam is divided into a connecting area and a navigation channel area through steel sheet piles; s3, the cofferdam structure of the channel area is dismantled to form a second channel; s4, a second sub-cofferdam is constructed, and the second sub-cofferdam is made to communicate with the connecting area; s5, a second sub-cofferdam tunnel is constructed, and the second sub-cofferdam tunnel communicates with the first sub-cofferdam tunnel; and S6, the second sub cofferdam structure is dismantled. By the adoption of the scheme, it is guaranteed that a channel is always reserved between the two islands during construction, normal operation can be achieved, and meanwhile the tunnel can be conveniently constructed in the first sub-cofferdam and the second sub-cofferdam in an open excavation mode.

The application discloses a wave power generation-anti-collision-anti-scour integrated cross-sea bridge protection system and method, which comprises a bridge pier system, an anchorage scour prevention module wrapped around the outer periphery of the foundation section of the bridge pier system, an anti-collision and energy capturing mechanism arranged on the two sides of the bridge pier system, an energy conversion assembly arranged between the anti-collision and energy capturing mechanism and the anchorage scour prevention module, and a wave power generation mechanism; the energy conversion assembly comprises a lower cantilever energy conversion mechanism, an upper outer energy conversion mechanism and an upper inner energy conversion mechanism; the wave kinetic energy and potential energy are captured through the three energy conversion mechanisms and the anti-collision and energy capturing mechanism, are converted into electric energy through the wave power generation mechanism transmission mechanism, and are converted into electric energy through the generator; the anti-collision and energy capturing mechanism absorbs the ship collision energy and guides the ship trajectory, the anchorage scour prevention module changes the water flow direction to weaken the scour of the bridge pier system, and the wave power generation, ship anti-collision and anti-scour three functions are integrated and cooperatively operated.

The invention discloses a finite element method-based dynamic-hydraulic calculation method for a bearing platform with any cross section, and aims to solve the problem of errors caused by adopting a pier dynamic-hydraulic calculation method to approximate the bearing platform in the prior art. The method comprises the following steps of: establishing a dynamic balance equation of a deepwater pier under the action of an earthquake, and deducing generalized parameters based on a shape function and a D 'Alembert principle; constructing a simplified analysis model of the bearing platform, adopting a modified shape function to adapt to geometric characteristics of the bearing platform, and regarding the bearing platform mass as concentrated mass to establish a dynamic balance equation; and finally, deducing a computational formula of the dynamic and hydraulic additional mass. The method is clear in theory, high in calculation efficiency and accurate in result, and can be widely applied to convenient calculation of dynamic and hydraulic power of the bearing platform in engineering such as sea-crossing bridges.

The present disclosure is a vertical position staged self-adjusting wave-resistant anti-ship collision device for a cross-sea bridge, comprising: a collision-proof sleeve box arranged around the bridge foundation near the water surface; a horizontal restraint system arranged between the bridge foundation and the collision-proof sleeve box; a vertical restraint system, one end of which is fixed to the collision-proof sleeve box, and the other end is fixed to the bridge foundation, for providing an action force to the collision-proof sleeve box in the opposite direction of the vertical movement direction or the movement trend direction; an adjusting water tank arranged at the top of the collision-proof sleeve box for adjusting the water entry depth of the collision-proof sleeve box. By using the present disclosure, the collision-proof sleeve box can be locked when small water level changes or small wave actions occur, and vertically adaptive movement is achieved when large water level changes or large wave actions occur, realizing the anti-ship collision function under different water levels, while reducing the up-down high-frequency movement amplitude and cumulative stroke of the collision-proof sleeve box under the random wave action of the marine environment, reducing the wear and tear of the horizontal restraint system, and improving the wave impact resistance and fatigue resistance.

The utility model discloses a mass block suitable for the tuned mass damper of cross-sea bridge, it includes the mass block body of inside hollow, the inside hollow inside filling has counterweight of mass block body, and mass block body includes the front end body and rear end body of being connected, and the front end body is hemispherical shell, and the rear end body is streamline shell, the utility model discloses under the sea current impact, and the front end body is located upstream and first receives the impact, and the rear end body is located downstream and rear end body is streamline and can destroy tail flow field, dissipate impact energy, reduce the water flow resistance that mass block whole received, effectively improve mass block stress performance.

The invention discloses a method for calculating a wave flow force shielding coefficient of a sea-crossing bridge pile group foundation, and belongs to the technical field of pile group foundation wave flow force research. The method comprises the following steps: making a bridge pier, a bearing platform and a pile group foundation in a scaling-down manner, simulating an application scene and installing in a test wave pool; irregular waves are generated in the test wave pool through a wave maker, and the wave height and period of the waves in the test model are simulated; the water depth, the wave height, the wave period, the pile diameter and the pile distance in the test wave pool and the wave flow force borne by the pile foundation are measured respectively; and a wave flow force shielding coefficient calculation formula is provided based on analysis of the on-way change rule of the pile foundation wave flow force shielding coefficient. Compared with a calculation method in the current specification, the calculation method provided by the invention provides convenience for single pile stress re-checking calculation in the pile group, the calculation precision is improved, the cost increase caused by too conservative engineering design calculation is avoided, and the engineering construction cost is effectively saved.

This invention discloses a method for hoisting steel anchor boxes with variable spacing for cable-stayed bridge towers across the sea, belonging to the field of bridge engineering. To address the challenges of short working windows at sea and the low precision, efficiency, and slowness of traditional methods, this invention constructs an integrated intelligent hoisting system. By deploying visual markers and positioning anchor points on the tower columns and steel anchor boxes, and combining differential satellite positioning, inertial measurement units, and other multi-source sensors, the precise pose of the steel anchor boxes is calculated in real time under a unified spatiotemporal reference. Artificial intelligence algorithms are used to predict the dynamic trajectory of sea conditions, the ship's hull, and the hoisting process, and a model predictive controller generates crane linkage compensation commands to dynamically suppress wind and wave disturbances. During the near-field installation phase, the system performs trajectory fine-tuning and anti-collision control based on a segment gap database; finally, a three-way hydraulic jack completes millimeter-level precise alignment and locking. This invention achieves an integrated closed loop of perception, prediction, control, and fine-tuning, significantly improving installation accuracy and efficiency, and shortening the time spent at sea.

This invention discloses a cross-sea combined distributed measurement system and method, relating to the field of bridge construction technology. The cross-sea combined distributed measurement system includes multiple instrument platforms and multiple reference platforms. The multiple instrument platforms are spaced apart on one side of the bridge pier, and each instrument platform is equipped with a first total station on its top. The multiple reference platforms are spaced apart between the instrument platforms and the bridge pier, and each reference platform is equipped with a first target on its top. Each bridge pier is equipped with a second total station on its top. The reference elevation of the reference platform is measured using the first total station of two adjacent instrument platforms and the first target of one reference platform. Based on the reference elevation of the two reference platforms, the elevation of the bridge pier is measured using the second total station of one bridge pier and the first targets of the two adjacent reference platforms. By setting up multiple reference platforms and multiple instrument platforms to perform measurements together, the number of instrument platforms set up in the sea is reduced, the construction period is shortened, and the measurement cost is reduced.

The invention provides a porous composite sleeve inflatable hose collaborative noise reduction device and method suitable for offshore wind power pile sinking operation, and belongs to the technical field of ocean engineering noise control, the porous composite sleeve inflatable hose collaborative noise reduction device comprises a porous composite sleeve base body, and the porous composite sleeve base body is formed by compounding an inner metal rigid material layer and an outer elastic sound absorption material layer; conical through holes which are uniformly arranged in a penetrating manner are formed in the porous composite sleeve base body; an inflation hose system is fixed to the outer portion of the porous composite sleeve base body in a spiral winding mode through a buckle, the inflation hose system covers outlets of all the conical through holes and is communicated with the outlets of all the conical through holes, and a pressure relief valve is installed on the inflation hose system. According to the device, through the synergistic effect of multiple mechanisms of sound reflection, friction damping, viscoelastic energy dissipation and pneumatic pressure relief, the purpose of efficient noise reduction of offshore piling operation is achieved. The method is suitable for underwater impact noise control scenes such as offshore wind power pile foundations and sea-crossing bridges, has an obvious noise reduction effect on the offshore piling operation, and remarkably reduces the noise environmental pollution of the offshore piling operation.

The invention discloses an integrated water conveying pipeline based on submarine cables, a fresh water supply system and a supply method, and belongs to the technical field of marine new energy operation and maintenance guarantee. The integrated water conveying pipeline is of a coaxial structure and sequentially comprises a submarine cable, an insulating rubber layer, a water conveying pipeline body and an armor layer from inside to outside. The fresh water supply system comprises the integrated water conveying pipeline, an onshore fresh water pressurization system, an offshore fresh water receiving and storing system and a monitoring and control system. The supply method comprises the steps that land fresh water enters the integrated water conveying pipeline after being filtered and pressurized, is conveyed to the sea in a cross-sea mode, is subjected to decompression and sterilization treatment and is stored in the water storage tank, and the monitoring system monitors relevant parameters in real time. According to the method, the cost is reduced by using the existing laying path of the submarine cable, the supply stability is improved through continuous conveying and real-time monitoring, the fresh water management is optimized through the prediction model, the long-period operation and maintenance requirements of the offshore booster station are met, and the method can be widely applied to the offshore booster station fresh water supply scene of near and open seas.

The invention discloses a steel pipe pile combined cofferdam structure for a cross-sea tunnel and a construction method, and belongs to the technical field of steel pipe pile cofferdams, the steel pipe pile combined cofferdam structure comprises a plurality of steel pipe piles in a head-to-tail closed shape, every two adjacent steel pipe piles are connected through a lock catch assembly, ton bags are stacked in an area defined by the steel pipe piles, and the ton bags are connected with the steel pipe piles. The ton bags are filled with sand materials, and the ton bags are used for carrying out back pressure supporting on the inner sides of the steel pipe piles. The construction method has the effects that the construction cost of the cross-sea tunnel cofferdam is reduced, and the construction efficiency is improved.

This invention discloses a method and system for correcting the local scour depth of bridge foundations considering the combined effects of waves and currents. The method includes: calculating the depth of local scour pits on bridge piers under pure water flow; correcting the depth of local scour pits under pure water flow using an amplification factor for the local scour depth under wave influence, thus obtaining the depth of local scour pits under the combined effects of waves and currents; the amplification factor is calculated based on the tidal velocity, the maximum velocity of horizontal particles at the seabed bottom, and the KC number. This invention improves calculation accuracy, reduces the risk of local scour of cross-sea bridge foundations due to underestimation of calculated values, and ensures bridge safety.

The invention belongs to the technical field of slurry treatment equipment, and provides a sea-crossing bridge linear cutting removal slurry recovery device. The device comprises a pretreatment device and a separation device connected behind the pretreatment device, the separation device comprises a small-particle stock bin, the top of the small-particle stock bin is open, the top of the small-particle stock bin is provided with a sediment forming component and a partition plate allowing the sediment forming component to vertically move, and water flow forming holes are formed in the partition plate on the two sides of the sediment forming component; the upper end of the sediment forming component is a blocking end, a gap is formed between the blocking end and the partition plate, the blocking end is matched with the water flow forming hole, and water flows away from the sediment forming component along the gap between the blocking end and the partition plate. The invention aims to improve the flocculation rate of concrete slurry sol, reduce the use of chemical agents and realize low-carbon green treatment; and the mud cakes are directionally regulated and controlled and are converted into different aggregates or functional materials, so that the high-added-value utilization of the mud cakes is realized.

The invention discloses a preparation method of a high-thermal-conductivity insulating wire core for inhibiting a skin effect. The preparation method is specifically implemented according to the following steps: step 1, carrying out surface modification on a boron nitride nanosheet; step 2, preparing a boehmite nanosheet; step 3, preparing coating slurry; step 4, metal conductor pretreatment; step 5, directional arrangement and gradient curing; and 6, preparing a conductive wire core. The invention also discloses a wire core prepared by the method, and the prepared wire core simultaneously realizes the cooperation of four functions of low-loss power transmission, efficient heat dissipation, electrical treeing aging resistance and mechanical fatigue resistance under the extreme working conditions of high voltage, large current, dynamic laying and the like. And a new generation of high-performance conductor solution is provided for high-capacity and long-life submarine cable systems such as offshore wind power, flexible direct-current cross-sea interconnection and the like.

The invention belongs to the technical field of heat distribution pipeline overhead laying simulation, and discloses a heat distribution pipeline overhead laying simulation system for a cross-sea bridge, which comprises a sea surface simulation module, a pipeline simulation module, a coupling simulation module, a digital twinborn calibration module and a comprehensive decision module, the sea surface simulation module is used for collecting and quantifying multi-source parameters of typhoons, waves and piers at the cross-sea bridge, and finally outputting a spatial continuous power distribution cloud picture; the pipeline simulation module can obtain the average pressure, flow and flow velocity transient change of the whole sea-crossing pipeline on each time step, establish a structural coupling model of the transient change of fluid in the pipeline and the pipe wall, and output the transient flow pressure in the pipeline. Through the high-resolution wind wave field reconstruction of the sea surface simulation module and the accurate capture of the internal transient flow of the pipeline simulation module, the limitation of the traditional steady-state hypothesis is broken through, and the dynamic process of the wind-wave-bridge-pipe multi-coupling effect during the typhoon passing can be truly represented.

The application discloses a kind of cross-sea immersed tunnel siltation and sudden silt load calculation method, comprising: sufficient investigation, collect tunnel area marine environment monitoring data basis, theoretical analysis, according to field test results, establish siltation thickness theoretical model and calculation method under two conditions of sand mining open period and closed period.According to the characteristics of the project area, the siltation load calculation model is established, and the siltation thickness is layered and stacked based on the siltation thickness model.The total load and the incremental load of the tunnel siltation under the siltation state are established.According to the collapse and formation characteristics of the sudden silt material in seawater, a marine sudden silt geometric model is established.The probability density function is used to establish the sudden silt spatial distribution function and the corresponding sudden silt load distribution function.According to the application, the theoretical model and calculation method of the marine environment siltation load and the disaster load formed by the rare sudden siltation in the project area are established, which provides a practical method for calculating the dynamic load on the immersed tunnel during operation.

The invention relates to a sea-crossing bridge settlement deformation observation system based on multi-modal fusion, and the system comprises a Beidou / GNSS monitoring subsystem which is used for constructing a whole-line settlement deformation monitoring control network, takes the geodetic height variable quantity as a settlement value, and comprises a reference network formed by monitoring reference points, a monitoring network formed by working base points and monitoring points, and a monitoring network formed by the working base points and the monitoring points; the reference network and the monitoring network form a monitoring control network; the inclination measurement subsystem comprises an inclination angle sensor which is arranged on an approach bridge pier of the sea-crossing bridge and is used for measuring a non-uniform settlement value of the approach bridge pier; the static leveling subsystem comprises static leveling gauges mounted on a main tower pier and a side pier of the sea-crossing bridge and is used for measuring a relative settlement value of the main tower pier and the side pier and a non-uniform settlement value of the main tower pier; and the data processing subsystem is respectively connected with each subsystem and is used for receiving, storing and calculating data. According to the method, multiple technologies are fused, multi-modal data are formed, and full-period multi-dimensional settlement deformation observation of ultra-wide water area bridge construction is achieved.

The invention relates to the technical field of reinforcing mesh processing, and discloses a conveying device for sea-crossing channel reinforcing mesh processing based on visual inspection, which comprises a conveying seat, conveying belts for conveying a reinforcing mesh are arranged at the two ends of the conveying seat, and a rotatable overturning support is arranged on the conveying seat. A movable detection frame is arranged at one end of the overturning support, a plurality of first visual sensors and a plurality of second visual sensors are arranged on the detection frame, and first abutting rods are fixed to the two ends of the detection frame; in the process that the turnover support drives the reinforcing mesh to turn over, the purpose of driving the first visual sensor and the second visual sensor on the detection frame to move synchronously can be achieved, welding points distributed on the two faces of the reinforcing mesh can be detected in sequence at the same time, the detection time of a single reinforcing mesh can be shortened, and the detection efficiency is improved. And the detection efficiency is improved.

This invention belongs to the field of bridge engineering safety assessment technology, specifically a differentiated safety assessment method for cross-sea cable-stayed bridges and suspension bridges in frozen coastal areas of northern China. The method includes the following steps: constructing a differentiated assessment index system, acquiring multi-source heterogeneous data, determining the weights of differentiated indicators, establishing a differentiated safety assessment model, conducting assessments, outputting assessment results, and generating maintenance recommendations. For the structural stress characteristics of cable-stayed bridges and suspension bridges, a multi-level assessment index system containing common and characteristic indicators is constructed respectively. The common indicators include at least environmental indicators, and the characteristic indicators are set according to the key stress-bearing components of cable-stayed bridges and suspension bridges. The assessment method involved in this invention is highly targeted, accurate, and practical.

The application discloses a bridge abutment structure of a cross-sea bridge and a construction method thereof, characterized in that the bridge abutment is located on the water surface outside a seawall, a circle of prefabricated concrete sheet piles are arranged in front of and on the two sides of the bridge abutment, and the sheet piles are connected to form a closed scour-preventing structure; and light foam soil and block stones are used for filling soil behind the bridge abutment, and a filter structure is arranged. The bridge abutment of the application is located on the water surface outside the seawall and directly bears the scour of ocean waves, the bridge abutment has the functions of scour prevention and anti-voiding, and the problem that the bridge abutment is not suitable to be arranged on the seaward side is solved through comprehensive measures. Meanwhile, the bridge abutment is suitable to be applied to complex sites with high filling soil and soft ground.

The application discloses a multifunctional dredging device suitable for a cross-sea embankment pipe culvert and a construction method thereof, which is placed in the pipe culvert and used for carrying out dredging treatment on dirt in the pipe culvert; the multifunctional dredging device comprises a movable dredging body, a silt loosening mechanism arranged at the lower end of the dredging body and used for loosening the dirt in the pipe culvert, a dirt suction port arranged above the silt loosening mechanism on the dredging body, a dirt discharge pipe communicated with the dirt suction port, a high-pressure water jet hole arranged above the dirt suction port on the dredging body and a waterproof motor for providing power; the silt loosening mechanism comprises a rake head for loosening silt and an inner eight-hinged structure for loosening hard and complex deposited layers. The application utilizes the walking wheels and the silt loosening-dirt suction-dirt discharge-high-pressure water jet flushing and scouring cooperative operation to adapt to the dredging requirements of silt with different depths; the multifunctional dredging device is placed in the pipe culvert and fixed on a working ship by two flexible cables, thereby solving the problems of inconvenient operation and single function of the prior art.