233 results about "Immersed tube" patented technology

The invention discloses an immersed tunnel leakage voiceprint recognition system based on deep learning. The system comprises an acoustic signal acquisition module, a signal preprocessing module, a voiceprint feature extraction module, a deep learning recognition module and a leakage positioning and early warning module. According to the invention, the leakage water flow sound and the structural damage elastic wave signal of the immersed tunnel are comprehensively considered, the multi-dimensional voiceprint feature extraction and deep learning model are fused, and the adaptive signal noise reduction and sound source positioning technology is combined, so that the high-precision monitoring and real-time early warning of the leakage of the immersed tunnel are realized; the accuracy and real-time performance of immersed tunnel leakage nondestructive monitoring are improved, and powerful support is provided for follow-up risk prediction and early repair.

The invention relates to the technical field of rock-soil stress monitoring, in particular to a rock-soil stress monitoring data analysis method and system. The method comprises the following steps: acquiring geological data and construction design data of a river bridge construction area, and analyzing piling immersed tube distribution difference to obtain piling immersed tube distribution difference data; performing extrusion lateral stress deflection simulation according to the piling immersed tube distribution difference data, further estimating stress transfer loss to obtain effective stress transfer data, and performing stress impact structure instability analysis between adjacent rocks and soil; and constructing a rock-soil stress risk monitoring model based on a random forest algorithm, and sending the model to a terminal for rock-soil stress monitoring data analysis. The rock-soil stress monitoring technology is optimized, so that the rock-soil stress monitoring technology is more accurate.

The invention provides an immersed tube tunnel underwater slope protection silting prevention system and a construction method thereof.The immersed tube tunnel underwater slope protection silting prevention system comprises a foundation trench, a side slope is arranged in the foundation trench, the immersed tube tunnel underwater slope protection silting prevention system comprises a plurality of blocking units, each blocking unit comprises a silting prevention plate and a plurality of limiting pipes, and the limiting pipes are arranged on the side slope. The silt prevention plate is laid on the side slope, a plurality of accumulation channels penetrating in the vertical direction are formed in the silt prevention plate, and the accumulation channels are used for collecting silt; the multiple limiting pipes are inserted into the side slope in the vertical direction and connected with the silt prevention plate. According to the immersed tube tunnel underwater slope protection siltation prevention system, silt in water flow is intercepted through the accumulation channel on the siltation prevention plate, when the silt falls onto the siltation prevention plate, the silt can be deposited in the accumulation channel, the deposited silt and a soil body embedded in the accumulation channel are fused into a whole, the siltation prevention plate can be reversely fixed, the stability of a side slope is protected, and the service life of the side slope is prolonged. The sludge utilization rate is improved.

The invention discloses a large-scale immersed tube tunnel silt squeezing simulation device and method, the large-scale immersed tube tunnel silt squeezing simulation device comprises a large-scale immersed tube model, a truss structure, a gear rack structure, two supports and a model groove, the truss structure is fixed on the top of the large-scale immersed tube model, and a balancing weight is placed on the truss structure; two sealing rubber strips are respectively arranged on the periphery of the large-scale immersed tube model; in the process of lowering the large-scale immersed tube model in the model tank, one end of the large-scale immersed tube model rubs with the side wall of the model tank to form a closed end, the other end of the large-scale immersed tube model forms a sludge discharge end, and an ultrasonic flow meter is arranged at the sludge discharge end; a stay wire displacement sensor is fixed on each bracket, two fixed ends are arranged at the top of the large-scale immersed tube model, and a fixed head of each stay wire displacement sensor is fixed on one fixed end; a gravel layer, a back-silting float sludge layer and a seawater layer are sequentially arranged in the model groove from bottom to top, and a sea groove slope model is arranged in the model groove.

The invention discloses a comprehensive detection processing and analysis method and system for a deep foundation trench of an immersed tunnel, and relates to the technical field of data processing, and the method comprises the steps: firstly carrying out the acoustic calibration of a multi-beam array in a foundation trench region, and compensating a beam incident angle and echo delay, so as to eliminate systematic sounding errors; then macroscopically scanning the foundation trench based on the corrected sounding equipment to generate a high-resolution three-dimensional point cloud, identifying abnormal elevation change in real time and dynamically adjusting the dredging depth; then multi-frequency acoustic detection is carried out on the silt sediment, a float sludge thickness cloud picture is drawn to evaluate a loose structure, and targeted compensation is carried out; finally, the topographic form and the sediment structure change are jointly used for construction early warning, a closed-loop system from precision calibration to anomaly detection to physical property diagnosis and risk early warning is formed, the precision and integrity of foundation trench depth measurement and sludge monitoring are remarkably improved, potential risks can be found and corrected in time in construction, and the construction efficiency is improved. And the construction safety and efficiency of the immersed tunnel deep foundation trench are guaranteed.

The invention relates to a combined support and anchor cable combined underwater immersed tube tunnel and a construction method thereof, the combined support and anchor cable combined underwater immersed tube tunnel comprises a tunnel body which is formed by tube joints which are connected end to end in the length direction; the lower part of the pipe joint supporting mechanism extends into the seabed, the upper part of the pipe joint supporting mechanism extends out of the seabed, and the pipe joint is supported on the upper part of the pipe joint supporting mechanism; the device is characterized by further comprising a pipe joint anchoring mechanism used for controlling vibration and / or displacement of the tunnel body, and the pipe joint anchoring mechanism is arranged between the outer wall of the pipe joint and the seabed; the piles are distributed on the outward sides of the pipe joints forming the tunnel body at intervals, the lower ends of the piles penetrate into the seabed, the upper ends of the piles upwards stretch out of the seabed and are fixed to the pipe joints, and the resultant force of the tunnel body in the X direction, the Y direction and the Z direction is close to zero. The device has the advantages that vibration and / or displacement generated by the coupling effect of factors such as ocean waves, ocean currents, ship waves, storm surge and dynamic loads are effectively controlled so as to cope with the complex ocean environment; and the technical difficulty, the engineering cost and the comprehensive cost are reduced.

The invention relates to the field of immersed tube underwater construction, in particular to an underwater foundation bed leveling system which comprises a transversely-moving material distribution cart arranged on a chassis frame, and a longitudinally-moving material distribution trolley arranged on the material distribution cart. The material distributing rod is fixed on the material distributing trolley; the first absolute value encoder is arranged on the cloth cart and used for collecting first position data of the cloth cart; the second absolute value encoder is arranged on the distribution trolley and used for collecting second position data of the distribution trolley; the main control system comprises a receiving module and a control module, the receiving module is in communication connection with the first absolute value encoder and the second absolute value encoder, and the receiving module is used for receiving the first position data and the second position data and sending the data to the control module; and the control module is in communication connection with the receiving module, the material distribution cart and the material distribution trolley, and the control module controls movement of the material distribution cart and the material distribution trolley according to the first position data and the second position data, so that the material distribution rod automatically performs foundation bed stone laying underwater.

The invention belongs to the technical field of welding platforms, and particularly relates to an immersed tube overwater welding operation platform which comprises a floating box, a welding supporting mechanism and a plurality of pipeline locking mechanisms, and the inner wall of the floating box is divided into nine air floating chambers through partition plates. The pipeline can float on the water surface to complete welding butt joint, butt joint of pipelines of different lengths is adapted, and the quality efficiency is guaranteed by monitoring the inclination state of the floating box and the welding platform in real time and adjusting the balance weight to prevent tipping and create a stable welding environment; stable fixed tension is provided, wind power and water flow influences are resisted, position deviation is prevented, reverse compensation force can be provided in cooperation with a propeller when large driving force is applied in one direction, fatigue damage of a traction rope due to continuous impact force is avoided, rapid water supply and drainage of the buoyancy tank are achieved, water is rapidly injected to increase the overall weight when large impact force is applied, and the tensile force of the traction rope is improved in a matched mode; the water flow pushing efficiency is reduced, the resistance stability is improved, and the positioning effect is optimized.

The present invention relates to the technical field of immersed tube construction, and in particular to a variable-cross-section template and a construction method for a variable-cross-section immersed tube. The variable-cross-section template comprises an inner template system and an outer template system, wherein the inner template system is located inside the outer template system; two outer sides of the inner template system are provided with first inclined faces inclined inwardly toward each other, two inner sides of the outer template system are provided with second inclined faces inclined inwardly toward each other, and each second inclined face corresponds to the first inclined face on the same side; and casting is performed in an area between the inner template system and the outer template system to form an immersed tube. During the casting of the immersed tube, an inclined side wall is provided between each second inclined face and the first inclined face on the same side to form a flared section of the immersed tube, and then the immersed tube enables lane confluence by means of the flared section. The immersed tube is cast by means of the variable-cross-section template of the present application, so that the immersed tube has the flared section, and the variable-cross-section immersed tube is formed, thereby meeting the construction requirements.

The invention relates to grid laying equipment for immersed tunnel backfilling and an immersed tunnel backfilling method, belongs to the technical field of subsea tunnel construction, and aims to solve the problem that grids are difficult to lay accurately in existing immersed tunnel backfilling construction. The grating laying equipment for immersed tunnel backfilling comprises a first track, a second track, a charging mechanism, a configuration mechanism, a traction mechanism and a fixing device. The two first rails are arranged on the two sides of the immersed tunnel in parallel. The loading mechanism is movably arranged on the first track and is used for loading a grating roll; the configuration mechanism is communicated with the loading mechanism, is used for receiving the grating roll and can adjust the stretching end of the grating roll to the discharge port; the second rail is arranged perpendicular to the first rail and can slide along the first rail; the stretching end of the grid roll is pulled by the pulling mechanism, so that the gravel layer is fully paved with the grid; and the laid grating layer is fixed on the rubble layer by using a fixing device. According to the application, the accurate laying of the grating in the backfill construction of the underwater immersed tube tunnel is realized.

The invention relates to a highway-railway combined construction immersed tube tunnel foundation bed structure, which belongs to the field of immersed tube tunnels, and adopts the technical scheme that a staged foundation is arranged below an immersed tube tunnel, the rigidity of a cushion layer of the staged foundation is gradually reduced along with the length from the end of the immersed tube tunnel, and a grouting lifting device is arranged below the staged foundation; the immersed tunnel is provided with a monitoring device, the monitoring device transmits monitored signals back to the data center, and a backfilling layer is arranged above the immersed tunnel according to an original riverbed line. According to the method, the multi-stage rigidity gradient distribution design and the active control lifting device are adopted, intelligent regulation and control of foundation bed supporting rigidity distribution characteristics are utilized, foundation lifting compensation is implemented in real time, dynamic optimization of a load transmission path and precise regulation and control of the settlement amount are achieved, and the service life of a key structure is greatly prolonged.

The utility model relates to a sampler for back-silting detection of a foundation trench of a pre-laid immersed tube tunnel, which belongs to the technical field of back-silting detection of foundation trenches of immersed tube tunnels and comprises a sampling tube, a sealing diaphragm and a sealing lifting lead. Wherein the sampling tube is used for accommodating a foundation trench back-silting sample, an opening is formed in the bottom of the sampling tube, and a bracket is fixed at the top; the sealing diaphragm is arranged at the bottom of the sampling tube and used for sealing the opening after sampling; one end of the sealing lifting wire is connected with the sealing diaphragm through the bottom of the sampling tube, the other end of the sealing lifting wire is controlled by a worker, and when the sealing lifting wire is controlled to be pulled upwards, the sealing lifting wire pulls the sealing diaphragm to move and seal the opening. According to the sampler, the opening is formed in the bottom of the sampling tube and is sealed by the sealing diaphragm, so that accurate acquisition of a back-silting sample is ensured; and through the arrangement of the sealing lifting lead wire, an operator can easily control opening and closing of the sealing diaphragm, and the operation difficulty and cost are reduced.

The invention provides a pre-paving method immersed tube tunnel and a construction method of a pre-paving method integral type tube joint immersed tube tunnel, and belongs to the field of tunnels, the pre-paving method immersed tube tunnel comprises a tunnel body, a broken stone hardcore and an adjusting assembly, and the broken stone hardcore is arranged below the tunnel body; the adjusting assembly comprises a first adjusting layer, a second adjusting layer and a grouting mechanism, the first adjusting layer and the second adjusting layer are both arranged between the tunnel body and the broken stone hardcore, the first adjusting layer and the second adjusting layer are sequentially arranged from bottom to top, the first adjusting layer comprises a plurality of first bags evenly laid on the broken stone hardcore, and the second adjusting layer comprises a plurality of second bags evenly laid on the broken stone hardcore; the second adjusting layer comprises a plurality of second bags evenly laid above the first bags, all the second bags are located between the first bags and the tunnel body, and the grouting mechanism comprises first grouting pipes communicating with the first bags and second grouting pipes communicating with the second bags. Compared with the prior art, by arranging the double-layer bag, the technical problem that an existing integral immersed tube tunnel is prone to being damaged due to sedimentation is solved.

The invention relates to a high-power vibroflotation lower assistance immersed tube bottom discharging device and a construction technology, and belongs to the field of vibroflotation construction. The device comprises a vibroflot, an immersed tube used for conveying filler and a lower power assisting system used for applying downward pressure to the immersed tube and the vibroflot, a feeding port is formed in the upper portion of the immersed tube, and a discharging port is formed in the lower end of the immersed tube. The lower power assisting mode of the lower power assisting system comprises but not limited to a vibration hammer, an impact hammer, a down-the-hole hammer and a winch lower pressurization system. The discharging mode is bottom discharging, including but not limited to damper upper portion discharging and vibroflot head discharging. The material guide pipeline of the immersed tube can be an external water, gas and gas pipeline channel or a water, gas and stone pipeline channel in the material guide pipeline, and is suitable for diversified construction. A high-power vibroflot is adopted to be matched with an immersed tube for construction, and the device is particularly suitable for treating muddy clay geology.

The invention provides an immersed tube joint sinking butt joint underwater space positioning system and method. The immersed tube joint sinking butt joint underwater space positioning system comprises a clinometer, a mobile station group, a tide gauge, a multi-beam sonar and a monitoring data analysis and display module. The inclinometer obtains bidirectional dip angle monitoring data of the immersed tube joint; the mobile station group obtains coordinate monitoring data of positions where the mobile stations are located respectively; the tide level meter obtains tide level monitoring data in the pipe joint sinking and butt joint period; the multi-beam sonar obtains the terrain data of the underwater foundation trench in the pipe joint sinking and docking area; the monitoring data analysis and display module obtains feature point coordinates, pipe joint postures and early warning index data on a to-be-immersed pipe joint according to the inclinometer monitoring data, the mobile station group monitoring data, the tide level data, the multi-beam underwater topographic data and the immersed pipe joint coordinate data.

The invention relates to the technical field of immersed tunnels, in particular to an immersed tunnel settlement calculation method, system and medium under a sedimentation load.The method comprises the steps that basic assumption is made based on stress deformation characteristics of an immersed tunnel, and the circulation form of the sedimentation load is determined based on the basic assumption; obtaining a calculation expression of the siltation load changing along with time; calculating the non-linear consolidation settlement of the soil layer of the underlying foundation caused by the sedimentation load; through the compression modulus, the drainage distance, the consolidation coefficient and the cycle period of the foundation soil layer, a Taylor expansion is combined to obtain a calculation expression of foundation settlement changing along with time; based on the bending moment and the shearing force of the Timoshenko beam model, the deflection of the immersed tube tunnel with the different dredging frequencies is determined; determining a settlement value at the left end joint of any pipe joint and a settlement value at the right end joint of any pipe joint according to the transmission deflection difference and the rotation angle between the adjacent pipe joints in the immersed tunnel; according to the method, the calculation accuracy of immersed tunnel sedimentation caused by the sedimentation effect can be improved.

The utility model discloses a cast-in-place pile over-pouring leveling device, which relates to the technical field of cast-in-place pile over-pouring construction, and comprises an immersed tube arranged in a pile hole and a connecting tube arranged at the top of the immersed tube, and a leveling mechanism and an over-pouring height detection mechanism are sequentially arranged on the connecting tube. The leveling mechanism comprises a supporting frame fixedly connected to the outer wall of the top of the connecting pipe, a rotating cylinder connected with the inner wall of the center of the supporting frame in a penetrating mode through a bearing, a lifting rod connected into the rotating cylinder in a sliding mode, a scraping plate fixedly connected to the bottom end of the lifting rod, a driving assembly and a height adjusting assembly. The leveling mechanism is arranged, the working height of the leveling plate is adjusted to a proper height through the height adjusting assembly, and then the leveling plate is driven to rotate at a high speed through the driving assembly, so that the flatness of a pile top area can be ensured by leveling concrete after the over-pouring construction is completed; and stress concentration caused by uneven concrete surface is avoided, so that the integral structural integrity and the bearing capacity of the cast-in-place pile are ensured.

The invention discloses an immersed tube butt joint installation method and system based on laser ranging and visual recognition, and belongs to the technical field of ocean engineering. The method comprises the steps that a laser target set is installed on the butt joint end face of an installed pipe joint, and a laser positioning set and a laser projector are installed on the butt joint end face of a to-be-installed pipe joint; after the to-be-installed pipe joint sinks, the laser positioning group is started to measure the distance to the target group in real time, meanwhile, parallel light beams are emitted to the other end face of the to-be-installed pipe joint through the laser projector, and the position of a light spot is collected through visual recognition to obtain posture deviation; the distance and deviation data are fused, the optimal pose of the pipe joint to be installed is calculated through an optimization algorithm, and then the offset of the end face center and the axis deflection angle are obtained; and according to the parameters, a regulation and control instruction is generated, and the ballast water system and the winch system are controlled to adjust the posture of the to-be-installed pipe joint till accurate butt joint is achieved. According to the invention, full-underwater, high-precision and automatic immersed tube butt joint is realized, and the dependence on an overwater measuring tower and a GPS (Global Positioning System) is eliminated.

The invention relates to the technical field of dock and immersed tube dry dock building, in particular to a dock gate structure, a dock gate system and a dock gate mounting method.The dock gate structure comprises a dock gate which is of a grillage structure; the supporting frame is used for supporting one side of the dock gate through a plurality of jacks, and the supporting frame can be detachably separated from the dock gate. According to the dock gate structure, the support frame which is detachably connected is arranged on one side of the dock gate to provide external support for the dock gate and share partial stress, so that the dock gate can be designed into a lighter grillage structure, and the volume of the dock gate is greatly reduced. After being prefabricated, the dock gate can be in a flat state on the water surface to be hauled, and due to the fact that the size and draught are greatly reduced, the requirement for the channel depth is reduced. After being hauled to the site, the device is assembled with the supporting frame for use, so that the overwater operation processes such as floating transportation and installation are simpler, more convenient and more efficient, and the engineering construction efficiency is greatly improved.

The utility model relates to the technical field of foundation pile impact devices, in particular to a static pressure immersed tube method plain soil compaction pile impact device which comprises two cross beams which are symmetrical to each other and fixedly installed on an external pile press, and U-shaped frames are fixedly installed on rod bodies at the ends of the two cross beams. A supporting frame is rotationally connected between the left side plate body and the right side plate body of the U-shaped frame through a rotating shaft, a driving motor is coaxially arranged at the end of the rotating shaft, a first hydraulic cylinder is fixedly installed on the top plate body of the supporting frame, a lower pressing disc is arranged at the tail end of a telescopic shaft of the first hydraulic cylinder, and second hydraulic cylinders are fixedly installed on the left side plate body and the right side plate body of the supporting frame. A clamping plate is arranged at the tail end of a telescopic shaft of the second hydraulic cylinder, guide holes are formed in the left side plate body and the right side plate body of the supporting frame, guide rods are fixedly installed on the side faces of the clamping plate, and the guide rods penetrate through the guide holes and are in sliding connection with the guide holes. According to the utility model, angle adjustment and clamping guide operation are facilitated, and dense pile impact is facilitated.

The invention relates to an immersed tube prefabrication engineering automatic inspection method and system based on a point cloud and a mechanical dog, and the method comprises the steps: generating an oblique photography model of a prefabrication site, and converting the oblique photography model into a point cloud model; performing grid segmentation on the point cloud model, determining a plurality of scanning sites according to a grid segmentation result, and performing path planning on the plurality of scanning sites to obtain an optimal path; transmitting the optimal path to a mechanical dog, so that the mechanical dog reaches each scanning site according to the optimal path, and collecting scanning point cloud data of the prefabricated immersed tube at each scanning site through a scanner carried by the mechanical dog; and converting the BIM model of the prefabricated immersed tube into model point cloud data, performing registration and alignment on the model point cloud data and the scanning point cloud data at each scanning site, and calculating the geometric deviation of the prefabricated immersed tube based on a registration and alignment result.

The invention discloses a seabed immersed tube tunnel reinforcing device, a construction method and a resetting method, and belongs to the technical field of tunnels. A seabed immersed tube tunnel reinforcing device comprises a tunnel body installed on a seabed foundation, a plurality of composite pile pieces are arranged in the seabed foundation, a broken stone hardcore connected with the composite pile pieces is installed on the surface of the seabed foundation, and a bag base layer is arranged on the upper surface of the broken stone hardcore. A bag adjusting layer connected with the tunnel body is mounted on the upper surface of the bag base layer; in an operation period and a post-earthquake observation period, attitude data of the tunnel body can be obtained in real time by utilizing a dynamic monitoring and adjusting mechanism constructed by the bag adjusting layer, the grouting device and the detection system, and once it is monitored that the attitude of the tunnel body deviates, the grouting device can be allocated in time, and according to data fed back by the detection system, the attitude of the tunnel body can be accurately detected. And grouting operation is rapidly conducted on the bag adjusting layer, and posture adjustment can be conducted on the specific portion of the tunnel body in a targeted mode by controlling the grouting pressure and the grouting amount.

A long-distance underwater transportation method for immersed tubes, the steps of which are as follows: S1. After the prefabrication of the immersed tube segments is completed, preparations before launching are carried out; S2. Water is injected into the dry dock, and the immersed tube floats under the action of buoyancy to complete the launching of the immersed tube from the dock; S3. The towing barge tows the immersed tube and floats it along the waterway in the shallow sea area; S4. After the towing barge tows the immersed tube into the deep sea area, the immersed tube is towed to the installation position; S5. Before the immersed tube enters the installation position, the immersed tube floats up, and after floating up, the freeboard height is adjusted and the towing cable is adjusted; S6. The towing barge tows the immersed tube and floats it along the waterway to the designated installation position, and after basic positioning, mooring is carried out. By submerging the immersed tube segments for underwater transportation, the present invention avoids the damage to the structure caused by the extreme deep-sea environmental loads during the transportation process, realizes the long-distance transportation of the immersed tube across the deep sea area, and the present invention realizes the reuse of the existing immersed tube tunnel prefabrication factory, saving the investment in new projects and the construction period of the prefabrication yard.

The invention relates to a pre-paving immersed tube tunnel foundation trench back-silting detection method and a sampler, and belongs to the technical field of immersed tube tunnel foundation trench back-silting detection.The detection method comprises the following steps that S1, when detection is needed, an RTK receiver is installed on a detection platform, and the detection platform is moved to a detection point through GPS positioning; s2, putting down the sampler for sampling, lifting up a sealing lifting lead of the sampler after sampling is completed, and pulling a sealing diaphragm to block an opening in the bottom of the sampler; s3, upwards extracting the sampler until the sampler leaves the water surface, keeping the sampler in an upright state, and measuring the thickness of each layer of back silt in the sampler; s4, extracting each layer of back-silting sample in the sampler, and carrying out a specific gravity test to obtain the density of a back-silting object; and S5, according to the thickness and density of the back silting object, whether desilting needs to be conducted or not is judged. According to the detection method, opening and closing of the sealing diaphragm are controlled through the sealing lifting lead, diving operation is not needed, and manpower and equipment cost is reduced; and the thickness and the density of the back-silting sample can be accurately obtained.

The invention relates to the technical field of water quality monitoring devices, and discloses a floating type water quality monitor which comprises a buoy, a retractable box fixed to the top of the buoy, a waterproof center control box installed above the retractable box and a monitoring piece arranged below the buoy, solar panels are annularly distributed on the periphery of the waterproof center control box, and a fixed lug ring is arranged on the top of the buoy in the circumferential direction; a supporting cylinder penetrating through the buoy is coaxially and fixedly connected to the bottom of the winding and unwinding box, a linkage cable set is arranged in the supporting cylinder and comprises a connecting cable and a driving steel cable which are arranged in parallel, and the bottom ends of the two cables are jointly connected with a monitoring part and control the monitoring part to ascend and descend; according to the scheme, through control of the linkage cable set composed of the connecting cable and the driving steel cable which are arranged in parallel, the monitoring depth of the monitoring piece can be adjusted through synchronous retracting and releasing, the driving steel cable can be independently lifted to enable the immersed tube to incline to form a monitoring deviation angle, the monitoring piece can move in the circumferential fan-shaped range in the axis direction of the buoy, and the monitoring range is widened.

The invention relates to a general formwork system for immersed tube prefabrication and a using method thereof. A general formwork system for immersed tube prefabrication comprises a standard assembly and a plurality of replacement assemblies, the replacement assemblies are detachably connected to the standard assembly to form an immersed tube section formwork, and each part of each replacement assembly comprises at least two specifications. According to the general formwork system for immersed tube prefabrication, the replacement assembly is detachably connected to the standard assembly to form the immersed tube joint formwork and can be used for prefabrication and pouring of immersed tube joints, and each part of the replacement assembly comprises at least two specifications, so that the replacement assembly connected with the standard assembly can be replaced according to needs; and the standard assembly is of a universal structure and can be repeatedly used, and therefore a large amount of cost can be saved.

This application discloses a method, system, and electronic equipment for guiding vessels through an immersed tunnel area in a port area, relating to the field of vessel management in port waters. The method includes: triggering vessel identification based on an electronic fence; determining the target vessel to enter the electronic fence area; determining the vessel's navigation path based on scheduling plan information; estimating the time interval for the target vessel to pass through the immersed tunnel area; acquiring tidal level data of the immersed tunnel area; and calculating the passage window period for passing through the immersed tunnel area based on the tidal level data; comparing the time interval for passing through the immersed tunnel area with the passage window period; and determining the time period for the vessel to pass through the immersed tunnel area based on the comparison results; and generating passage guidance information for the vessel during its passage through the immersed tunnel area based on real-time tidal height data during the passage period. This application solves the technical problem in related technologies where only vague prompts are provided for vessels with passage risks in immersed tunnel areas, resulting in low vessel passage efficiency.

The invention relates to a foundation bed provided with an immersed tunnel inclined self-silt-discharging furrow, which comprises a foundation trench, a block stone layer and a rubble layer, the rubble layer is provided with a furrow (3) and a ridge platform (4), the furrow (3) comprises two side slopes, the surfaces of the two side slopes are called side slopes (6), and the foundation bed is characterized in that the position, close to the middle and lower than the ridge platform (4), on the furrow (3) is a furrow starting point, and the ridge platform (4) is arranged on the furrow (3). Two furrow end points are arranged at the two ends of the furrow (3) respectively, a middle slope from high to low extends from the furrow starting point to each furrow end point, and a front inclined plane (5) is formed on the surface of each middle slope; the shapes of the side slopes (6) of the two side slope surfaces are determined according to the middle slope; and in the silt squeezing process of the immersed tube, silt returning objects at the bottom of the immersed tube flow out of the bottom of the immersed tube along the two front inclined planes (5). The invention further provides a design method of the foundation bed.

The utility model discloses a piling immersed tube for building foundation construction and relates to the technical field of immersed tubes, the piling immersed tube further comprises an immersed tube body, a through groove is formed in the bottom of the outer side of the immersed tube body in a penetrating mode, a protruding part used for guiding materials is fixedly connected to the bottom of the inner side of the immersed tube body, a pile head is installed at the bottom of the immersed tube body, and a pile tip is installed at the bottom of the pile head; the inner side of the immersed tube body is provided with a discharging mechanism used for delaying the descending speed of the gravel blocks, the discharging mechanism comprises a fixing tube, the fixing tube is located on the inner side of the immersed tube body, one side of the inner wall of the fixing tube is fixedly connected with a plurality of first sliding plates, and the other side of the inner wall of the fixing tube is fixedly connected with a second sliding plate. And broken stones can gradually slide to the protruding part along the first sliding plate and the second sliding plate, so that the broken stones are conveniently prevented from directly falling from the high altitude to smash the protruding part, and then the service life of the protruding part is conveniently prolonged.

The utility model relates to a final joint of an immersed tube, which belongs to the field of tunnel construction and comprises a tube section, an expansion section, a push-out section, a push component, a waterstop and a retainer ring structure. A channel is formed in the pipe section in the length direction of the pipe section. The expansion section is arranged at one end of the pipe section in the length direction. The push-out section is arranged in the expansion section. The pushing assembly is used for pushing the push-out section to move in the length direction of the pipe section. The push-out section is sleeved with the water stop belt. The two ends of the water stop belt are connected to the peripheral wall of the push-out section and the end wall of the expansion section correspondingly. The check ring structure is arranged on the end wall, facing the water stop belt, of the push-out section. The check ring structure is located between the water stop belt and the push-out section. The check ring structure comprises a blocking piece, a first spring piece and a connecting assembly. The push-out section is sleeved with the blocking piece, and the blocking piece inclines towards the direction of the push-out section to the direction away from the pipe section section. The first spring piece is attached to the side, facing the expansion section, of the blocking piece. The connecting assembly fixes the blocking piece and the first spring piece to the expansion section.