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191 results about "Subway line" patented technology

DAS driving strategy optimization method driven by subway line real-time data

The invention relates to the technical field of subway train driving strategy optimization, and discloses a subway line real-time data driven DAS driving strategy optimization method, which comprises the following steps: acquiring multi-dimensional operation data including a train real-time position sequence, station passenger flow data and a trackside signal equipment state; extracting line operation characteristics through a convolution space-time encoder, generating a passenger flow fluctuation prediction map by using a time sequence decomposition algorithm, and performing characteristic fusion on the trackside signal equipment state to generate an equipment health degree evaluation matrix; inputting the multi-dimensional data into the driving strategy model to generate an initial driving instruction sequence, dividing operation control priorities through a regional clustering algorithm, and constructing a dynamic optimization strategy network in combination with a genetic algorithm to generate a final driving strategy scheme; and acquiring an execution state log in real time, and updating the strategy network through the abnormal decision detection model. According to the method, the dynamic optimization of the subway driving strategy is realized, and the operation safety, efficiency and comfort are improved.
Owner:SHANGHAI BOZHIWEI ELECTRONIC SOFTWARE CO LTD

Subway passenger flow simulation deduction method considering individual trip chain and activity mode

The invention discloses a subway passenger flow simulation deduction method considering an individual trip chain and an activity mode, and relates to the technical field of subway operation management, and the method comprises the following specific steps: constructing a topological framework, calculating an external factor attention weight, constructing an individual trip behavior library, carrying out dynamic topological adjustment, and executing passenger flow simulation and deduction. By constructing the space-time heterogeneous topology model and dynamically adjusting the weight values of the nodes and the edges, the precision and the real-time performance of subway passenger flow simulation are improved, physical parameters and historical operation data of urban subway lines are collected, an external factor input layer and a calibration layer are additionally arranged, and the accuracy of subway passenger flow simulation is improved. The spatial-temporal heterogeneous topology model can reflect the influence of external factors on the subway passenger flow in real time, the station retention weight and the line passing weight are dynamically corrected by calculating the attention weight of the external factors and combining data in the individual travel behavior library, and the prediction of the subway passenger flow change is realized. And a scientific basis is provided for subway operation managers.
Owner:JIANGSU URBAN TRAFFIC PLANNING & DESIGN INST CO LTD

Urban rail train operation organization emergency processing method and system under earthquake early warning

The invention discloses an urban rail transit organization emergency processing method and system under earthquake early warning, and the method comprises the steps: carrying out the evaluation of the safety of a station through employing an analytic hierarchy process and a fuzzy comprehensive evaluation method based on the earthquake early warning information obtained from a Chinese earthquake network, combining the line characteristics of the station and the characteristics of the surrounding environment, and carrying out the evaluation of the safety of the station through the combination of an analytic hierarchy process and a fuzzy comprehensive evaluation method; according to a safety evaluation result, the urban rail-oriented earthquake early warning grading treatment is divided into a plurality of grades, and a treatment scheme is given; and based on the station safety evaluation result and the grade disposal scheme, establishing a train scheduling optimization model based on the earthquake early warning information by aiming at the train operation elements through constructing constraint conditions and objective functions, and solving the model to obtain an optimal train operation scheme. The method has the advantages that the train operation scheme on the line is quickly decided by considering the actual situation of the earthquake and integrating the subway line characteristics, the environment characteristics and the early warning information, the safety of passengers is guaranteed to the maximum extent, the operation efficiency is improved, and the loss is reduced.
Owner:KUNMING METRO CONSTR MANAGEMENT CO LTD

Bolt color marking line detection method based on image segmentation and classification fusion

The invention discloses a bolt color marking line detection method based on image segmentation and classification fusion, and belongs to the field of track maintenance. According to the method, a color mark line area of a bolt head is accurately segmented by collecting a track bolt image and combining image preprocessing and mask extraction. On the basis, through deep semantic feature extraction and fusion, pixel-level masks and global context information are integrated and sent to a classification network to judge whether the bolt color graticules are aligned or not. And finally, the whole network structure is optimized through a joint training mechanism, so that the accuracy and robustness of the system in a complex environment are improved. According to the method, the bolt color marking line can be accurately extracted under the complex conditions of weak light, light reflection, shielding and the like, the fine offset with the alignment deviation smaller than 15 degrees can be effectively recognized, and the method can be widely applied to the fields of subway lines, urban rail vehicle maintenance, automatic inspection robots and the like.
Owner:JIANGSU NINGHE INTELLIGENT TRANSPORTATION TECH CO LTD

Metro line steel rail corrugation formation mechanism analysis method

An analysis method for a metro line steel rail corrugation forming mechanism comprises the steps that numerical model input parameters are obtained, and a wheel-rail three-dimensional coupling numerical model suitable for a vehicle-rail / wheel set of a metro line is constructed; longitudinal and transverse half width lengths of wheel-rail contact spots in the stable running process of the vehicle / wheel are obtained so as to determine a creep force-creep rate relation curve; determining a creep rate saturation critical value to judge the creep saturation state of the wheel-rail system; a macroscopic determination program for determining the structural stability of the wheel-rail system; determining an analysis process of a steel rail corrugation forming mechanism; judging whether the contact interface creep is saturated or not, and analyzing the probability of occurrence of rail corrugation according to the judgment; and determining a wavelength fixing method for rail corrugation in an actual measurement interval, and verifying the effectiveness and applicability of the method. According to the method, the steel rail corrugation phenomenon on a subway line is focused, the analysis method is provided from the two aspects of microcosmic creep saturation and macroscopic structure stability, and therefore the occurrence probability of steel rail corrugation is reflected more accurately.
Owner:SHIJIAZHUANG TIEDAO UNIV

Low-clearance and short-distance obstacle removing construction method for existing operation station enclosure structure

The invention discloses a low-clearance and close-range barrier removal construction method for an existing operation station enclosure structure, which comprises the following steps: S1, underground diaphragm wall construction: S11, underground diaphragm wall groove wall reinforcement: according to the stratum condition, in order to avoid hole collapse in the groove forming process, adopting MJS construction method piles for reinforcement treatment between a barrier removal working well and new and old ground walls of a station, and S12, construction of an underground diaphragm wall; grooving the underground diaphragm wall; s13, hoisting an underground diaphragm wall reinforcement cage; s14, concrete pouring is conducted; s2, crown beam supporting and dewatering well construction; s3, foundation pit excavation and support erection construction are carried out; s4, constructing a lining wall; s5, freezing construction is conducted; s6, barrier removal construction is carried out; and S7, backfilling construction is conducted. The problem that conventional construction cannot meet the construction requirements that the obstacle removing working well is located in a low clearance, adjacent to an operation subway line and a bridge pile and small in space of the obstacle removing working well is solved, obstacle removing work can be safely completed, and operation of the subway line and the viaduct cannot be affected.
Owner:URBAN RAIL TRANSIT ENGINEERING CO LTD OF CHINA RAILWAY FIRST GROUP CO LTD +1

Subway station spatial layout optimization method and system

The invention belongs to the technical field of rail transit construction, and discloses a subway station spatial layout optimization method and system, and the method comprises the steps: obtaining urban development planning and subway line network planning data, employing a passenger flow prediction algorithm, calculating long-term passenger flow data of different stations, and determining the scale grade of each station through a preset passenger flow threshold value; based on the scale level and the spatial layout of the stations, in combination with the functional positioning and transfer requirements of the stations, evaluating the layout schemes of station halls, stations, entrances and exits and channels by adopting an analogue simulation algorithm, and obtaining a layout scheme with the optimal passenger flow dispersion efficiency; according to the passenger flow volume change trend prediction data, elastic space analysis is carried out on the optimized layout scheme with the minimum occupied area and the lowest construction cost, the reserved space and the adjustable layout area of long-term reconstruction and extension of the station are determined, and an elastic space layout scheme is formed.
Owner:SHANDONG UNIV OF SCI & TECH

Subway line track state detection method and system based on improved YOLOv8s algorithm

The invention discloses a subway line track state detection method and system based on an improved YOLOv8s algorithm, and relates to the technical field of image processing, and the method comprises the steps: obtaining a to-be-detected subway line track image, inputting the image to a feature extraction module, and obtaining a first extraction feature, a second extraction feature, a third extraction feature and a fourth extraction feature; inputting the fourth extraction feature into a double attention module to obtain an enhanced feature; inputting the enhanced features into an SPPF module to obtain initial fusion features; inputting the initial fusion feature into a true internal rolling module to obtain a deep fusion feature; inputting the first extraction feature, the second extraction feature, the third extraction feature and the deep fusion feature into a multi-scale fusion module to obtain a multi-scale feature; and inputting the multi-scale features to a detection head module to obtain a final detection result of the multi-scale detection target. And various types of defect targets existing on the track can be comprehensively, efficiently and accurately detected and identified.
Owner:BEIJING MASS TRANSIT RAILWAY OPERATION CORPORATION LIMITED

Efficient and refined prediction method for indoor vibration of proposed building close to subway

The invention discloses a high-efficiency refined prediction method for indoor vibration of a proposed building close to a subway, and the method comprises the steps: carrying out a subway vibration propagation attenuation law test on the ground surface of a region where a proposed building foundation is located, and actually measuring subway vibration acceleration time domain data at different distance positions of a subway line through a test section; establishing a tunnel-site soil two-dimensional plane finite element model; a subway train load model capable of considering frequency spectrum characteristic adjustment and optimization is adopted, and a subway train load conforming to a site soil vibration propagation attenuation rule is obtained through inversion through comparison iterative calculation of multiple two-dimensional model calculation results and actually measured data; a two-dimensional plane finite element model after excavation of the building foundation pit is established, and subway vibration acceleration at the bottom of the building foundation pit is obtained through calculation; building a building three-dimensional finite element model containing an underground foundation structure, and using vibration data of a foundation pit position obtained by calculation of a two-dimensional finite element model as an excitation load to realize rapid and refined calculation and prediction of indoor subway vibration of the building.
Owner:INST OF URBAN SAFETY & ENVIRONMENTAL SCI BEIJING ACAD OF SCI & TECH

Oversaturated Passenger Flow Pre-Control Method for Urban Rail Transit Stations

The present invention relates to the technical field of rail transit management, and particularly relates to an over-saturated passenger flow pre-control method for urban rail transit stations. After the start time of the activity influence, according to the representative outbound of large-scale activities at each station on each subway line and the relative distance between each station and the activity station at each moment, the participation of large-scale activities on each subway line at each moment is obtained; combined with the number of available drivers, the increased transport capacity of each subway line at each moment is obtained; according to the change trend of the representative inbound or representative outbound of large-scale activities at the activity station at different moments, the start time and the end time of the large-scale activity are obtained, and the transport capacity of each subway line at different moments is controlled. The present invention provides reasonable subway transport capacity by accurately analyzing the influence of the passenger flow of large-scale activities on the subway transport capacity, and improves the effectiveness of passenger flow control.
Owner:SHANDONG TRAFFIC CONTROL TECH CO LTD

Subway lightweight video positioning method based on sparse optical flow algorithm

The invention provides a subway lightweight video positioning method based on a sparse optical flow algorithm, and the method comprises the steps: collecting a front image in a subway driving process, and carrying out the ROI region segmentation of the image; carrying out gray processing on the ROI image and carrying out angular point identification; performing optical flow tracking on the identified angular point by using an L-K optical flow identification algorithm based on an image pyramid, and estimating a new position of the angular point in the current frame according to the pixel intensity change in the local window; the target points are screened, noise is filtered, effective displacement tracks of the target points are screened, and confidence coefficient assignment is carried out on the effective target points; converting the pixel coordinate system into a three-dimensional world coordinate system to obtain a three-dimensional coordinate of the target point; solving the real displacement and instantaneous speed of each target point between adjacent frames; weighting and solving the actual displacement and the real-time speed of the whole vehicle; the actual distance between the stations of the subway line is obtained, and whether the subway arrives at the station is judged according to the running distance and the real-time speed between the subway stations. According to the method, metro positioning is achieved only through the vehicle head camera and the vehicle-mounted computer, a large amount of trackside equipment is reduced, light weight of metro positioning is achieved, and the equipment maintenance cost is reduced.
Owner:NANJING UNIV OF SCI & TECH

Subway passenger flow prediction method and equipment based on multi-scale space-time diagram attention network

The invention relates to a subway passenger flow prediction method and device based on a multi-scale space-time diagram attention network. The method comprises the steps of collecting passenger flow data of subway OD pairs, subway line network structure data and land use type data; constructing an OD-level urban rail transit knowledge graph based on the collected data, and calculating node features of the knowledge graph, including calculating historical passenger flow features, calculating land use information, calculating accessibility of OD pairs and calculating correlation of the OD pairs; inputting node features of the knowledge graph into a multi-scale space-time diagram attention network, performing diagram filtering on the node features, and updating the node features of the knowledge graph in combination with a result of a space-time attention mechanism; and inputting the updated node features into the multi-scale LSTM model, and outputting a multi-scale prediction result of the subway passenger flow. Compared with the prior art, the method has the advantages of being more accurate in prediction, beneficial to intelligent scheduling and the like.
Owner:SHANGHAI UNIV OF ENG SCI

Geographic information-based store site selection dynamic decision-making method and system

The invention provides a dynamic decision-making method and system for store site selection based on geographic information, and relates to the technical field of geographic information system.The method comprises the steps that traffic data of main roads and subway lines of a target city and geographic image information of peripheral business districts of a to-be-analyzed area in the target city are obtained; processing the geographic image information to obtain a physical boundary range and business state distribution information of a peripheral business district, and calculating traffic reachability parameters in combination with traffic data; determining a preliminary candidate area in the physical boundary range, and obtaining a cooperative potential parameter according to the traffic reachability parameter; selecting a candidate store area position from the preliminary candidate area based on the traffic reachability parameter and the cooperative potential parameter; according to surrounding dynamic factors, the candidate store area positions are evaluated to determine the final store site selection, so that the accurate, intelligent and dynamic decision-making of the store site selection is realized, and the scientificity and the commercial success rate of the site selection are improved.
Owner:BEIJING ALL VIEW CLOUD DATA TECH CO LTD

Urban newly-built subway line selection safety risk assessment method and system

The invention provides an urban newly-built subway line selection safety risk assessment method and system. The method comprises the steps that an existing building (structure) pile foundation loss permissible model is established; establishing a dynamic and static mechanical response model of the soft soil body through data statistical analysis and equation fitting; establishing a distance relation model between a dynamic stress field generated by metro operation and the metro through numerical simulation; and the allowable existing building pile foundation loss, the soft soil mass mechanical response and the distance relation between the subway operation stress field and the subway are synthesized, the safe distance value range is obtained, and line selection evaluation of the newly-built subway is supported. According to the method, through collection, arrangement and analysis fitting of a large amount of data information, summarization of the high-risk area of the newly-built metros in the high-density city in the soft soil area is achieved, and effective guidance is provided for planning and design of the newly-built metros in the soft soil area under the condition that existing buildings are considered.
Owner:SHANGHAI JIANKE ENG CONSULTING

Metro train speed measurement method based on millimeter wave radar

The invention discloses a metro train speed measurement method based on a millimeter-wave radar, and the method comprises the steps: S1, millimeter-wave radar equipment installation and calibration: enabling the millimeter-wave radar to be fixedly installed at the outer side of a train cab through a tool clamp, testing and measuring the installation posture of the millimeter-wave radar, and employing a gyro machine as the basis of dynamic calibration; step S2, radar signal acquisition and processing: millimeter wave radar message data are analyzed, interference of a subway line environment is reduced from the aspects of radar working parameter tuning and beam radiation optimization, and conditions are set to trigger high-frequency data acquisition; s3, data preprocessing and data analysis: preprocessing the collected data from the aspects of noise values, outliers and data reduction, identifying a detection target by adopting a density-based spatial clustering algorithm, and outputting target point cloud data; and S4, calculating the train speed and outputting the train speed in real time. According to the invention, the millimeter-wave radar is installed and the detected millimeter-wave radar point cloud data is analyzed in real time, so that accurate measurement of the train running speed is realized.
Owner:SHANGHAI ELECTRIC THALES TRANSPORTATION AUTOMATION SYST CO LTD

Construction method of support-first and support-second system based on back pressure soil of deep foundation pit of temporary operation subway

The invention relates to the technical field of deep foundation pit engineering construction, in particular to a first-supporting-and-second-supporting system construction method based on back pressure soil of a deep foundation pit of a temporary operating subway, and the method comprises the following steps: aiming at the construction problem of the deep foundation pit of the temporary operating subway, forming a collaborative supporting system by reserving a back pressure soil body, a supporting pile and a top beam; layered excavation is carried out by adopting a support-first and support-second process, and a next layer is excavated after support installation and prestress application are completed; deep foundation pit backfilling and steel support layered dismantling are executed step by step along with commercial main body structure construction; after the commercial main body reaches the preset stage, integrated construction including static cutting, rigid connecting component pre-embedding for settlement prevention and middle-embedded type water-stop belt waterproofing is conducted on the subway channel; and a real-time monitoring system is combined to ensure construction safety and subway structure stability. The method can effectively balance the stability of the deep foundation pit and metro protection requirements, improves the construction efficiency, solves the problems of settlement and leakage of construction joints, and is suitable for deep foundation pit engineering close to an operating metro.
Owner:CHINA CONSTR SECOND ENG BUREAU LTD

Soft soil area newly-built box culvert short-distance crossing operation subway line construction method

The invention discloses a soft soil area newly-built box culvert short-distance crossing operation subway line construction method which comprises the steps that positioning paying-off and blocking are conducted in a construction area, and before a foundation pit is excavated, ballasting bags with the specific stacking weight and height are arranged in the center of a corresponding subway tunnel rail according to the linear meter; holes are formed in the uplift pile positioning positions on the two sides of the subway tunnel, a first section of pile casing is hoisted and pressed downwards till the first section of pile casing sinks, the perpendicularity is adjusted, a rotary drilling machine takes soil to enable the pile casing to sink, all sections of pile casings are sequentially inserted into the designated burial depth, a reinforcement cage is put down to pour concrete, the pile casings are pulled out after the strength reaches the standard, and a cushion layer is made; the uplift pile end reinforcing steel bars on the same side are connected through reinforcing steel bar nets to form an uplift beam net, box culvert bottom plate reinforcing steel bars are bound, and an uplift pile, uplift beam and box culvert bottom plate integrated structure is formed through formwork erecting and pouring. According to the technical scheme, disturbance of construction to the subway tunnel can be reduced, and operation safety is guaranteed.
Owner:JINAN YELLOW RIVER CONSTRUCTION GROUP CO LTD

A subway existing line building waterproof system lap joint construction method

This invention discloses a method for overlapping construction of waterproofing systems in existing subway lines. It relates to the field of underground engineering waterproofing construction technology and includes: Step 1, current status investigation and deformation assessment; Step 2, overlapping structure system design; Step 3, key material selection and process matching; Step 4, refined overlapping construction process; and Step 5, full inspection after each process. This invention's method for overlapping construction of waterproofing systems in existing subway lines, through Step 1, involves structural deformation monitoring and analysis and diagnosis of the existing waterproofing layer; Step 2, involves deformation adaptation structure design and differential deformation compensation design; Step 3, involves material selection and process innovation; Step 4, involves base treatment, interface treatment, expansion joint and node construction, and reinforcement layer construction; and Step 5, involves process inspection. This method, tailored to the characteristics of existing subway lines, enables the effective combination of different waterproofing materials, adapts to continuous deformation, and ensures long-term reliability.
Owner:CHINA RAILWAY 16TH BUREAU GRP CO LTD +2

A long rail welding platform device for a subway operation line base and its usage method

The present invention relates to the technical field of track engineering, and specifically relates to a long rail welding platform device and a usage method for a subway operation line base, including: a welding work area, wherein the welding work area is provided with a transfer structure for transferring rails; a plurality of roller structures extending in a parallel direction from the welding work area to the existing line, and the roller structure includes a support frame and a roller assembly arranged on the support frame, and the support frame is used to support the roller assembly to the same height as the existing line. Compared with the prior art, the combined structure of the present invention is simple and feasible, easy to install and disassemble, and its advantages are: it can maintain the normal operation of the subway line, does not affect the travel of passengers, ensures the safety of subway operation, utilizes the original subway operation line vehicle base to build a long rail welding platform, welds 25m rails into 100m long rails, transports them to the underground line to replace the subway, and greatly improves the replacement speed.
Owner:SHANGHAI CIVIL ENG GRP CO LTD OF CREC +2

Deep and large foundation pit support system and construction method spanning over existing subway interval structure

This application relates to a deep and large foundation pit support system and construction method for straddling an existing subway section structure, belonging to the technical field of civil engineering construction. The deep and large foundation pit support system in this application includes a number of full casing support piles located on both sides of the existing subway line and a beam-slab covering the top of the existing subway line; the beam-slab includes a rigid frame beam and a reinforced concrete slab cast integrally; the rigid frame beam in the beam-slab straddles above the existing subway line and is correspondingly arranged with the full casing support piles, and both ends of the rigid frame beam are fixedly connected to the tops of the corresponding full casing support piles on both sides of the existing subway line; a number of rotary drilling support piles are arranged on the outside of the full casing support piles on each side, the rotary drilling support piles are located on the side and obliquely below the existing subway line, and there are a number of cross-laid anchor rods between the rotary drilling support piles on both sides. In this application, the effective protection of the subway structure is realized, and the adverse impact of construction on the existing subway is reduced.
Owner:BEIJING URBAN CONSTR ROAD & BRIDGE GROUP +2

Subway construction period emergency resource management and allocation method and system

The invention relates to the technical field of subway construction period emergency resource management, and particularly discloses a subway construction period emergency resource management and allocation method and system, and the method comprises the steps: building a line map of an existing subway line, carrying out the statistics of the resource types, number and coordinates of an emergency resource warehouse, building a resource map, setting the accident grade according to the accident type, and carrying out the emergency resource allocation. And determining the required resources under each grade, determining the required resources according to the accident type and grade when an emergency occurs, formulating an allocation scheme in combination with a resource map, and notifying management personnel of the emergency and the allocation scheme to realize rapid allocation of the resources. According to the invention, through presetting the emergency resource list and combining the real-time project progress, accurate matching is realized, emergency information is periodically updated to ensure accurate time efficiency, visual management is realized through a map, automatic monitoring and early warning linkage are realized to improve response sensitivity, so that emergency commanding and dispatching are more convenient, and emergency response efficiency is effectively improved.
Owner:DALIAN PUBLIC TRANSPORT CONSTR INVESTMENT GRP CO LTD +2

Platform for spatial analysis of protection area along subway based on unmanned aerial vehicle orthograph and GIS map fusion technology

The invention discloses a platform for spatial analysis of a protection area along a subway based on an unmanned aerial vehicle orthograph and a GIS map fusion technology, and belongs to the technical field of monitoring of the protection area along the subway, and the platform comprises a data collection module, a protection area image construction module, an abnormality judgment module, and a GIS real-time data sharing module. And the data acquisition module acquires video data of a target area through the unmanned aerial vehicle to obtain an orthograph of the target area, performs precision calibration on the obtained orthograph by using RTK to measure coordinates and elevation in combination with ground control points set in the target area, collects target subway line information, and marks a target subway line in the orthograph of the target area. According to the method, on the basis of the unmanned aerial vehicle orthograph and GIS map fusion technology, complex geographic information is simplified through linear processing on a subway protection area space analysis platform, the accuracy, real-time performance and efficiency of risk judgment are improved, and powerful support is provided for safety management of subway protection areas.
Owner:CHINA TOWER CO LTD

Subway train working diagram and demand management collaborative optimization method in reserved travel mode

The invention provides a subway train working diagram and demand management collaborative optimization method in an appointment trip mode, which comprises the following steps: acquiring subway line data and passenger flow data, and establishing decision variables; according to the coupling relation between the reserved passengers and the non-reserved passengers in the subway system, the fairness between the number of the passengers served by the train in each station and the number of the waiting passengers, and the coupling relation between the transport capacity and the transport volume, constructing constraint conditions; constructing an initial subway train working diagram and demand management collaborative optimization nonlinear programming model by combining subway line data, passenger flow data, decision variables and constraint conditions; equivalently converting the nonlinear programming model into a linear form according to a large M constraint to obtain a demand management collaborative optimization linear programming model; and according to mathematical characteristics of the linear programming model, designing a solving algorithm for solving until a standard subway train working diagram, a reservation quota allocation scheme and a passenger flow control scheme are obtained. According to the method, the service efficiency is improved, and the operation cost is reduced.
Owner:BEIJING JIAOTONG UNIV

Safety assessment method and system based on construction along subway

The invention discloses a safety assessment method and system based on construction along a subway, and belongs to the technical field of electric digital data processing, and the method comprises the following steps: obtaining an initial static comprehensive stress response value, and obtaining the initial construction speed of a grab machine through matching; a simulation construction comprehensive stress response value is obtained, and an initial construction speed simulation deviation proportion and a grab machine execution construction speed are obtained through analysis; whether construction speed correction processing is executed or not is judged, and if it is judged that the construction speed correction processing is executed, the construction speed correction processing is conducted; and if it is judged that the construction speed correction processing is not executed, a construction safety reminding signal is generated based on the construction execution speed of the grab machine and uploaded to a safety management background for construction safety reminding, and automatic construction state updating is carried out. The construction speed along the subway is reasonably adjusted, the construction safety is guaranteed, and the problem that in the prior art, the construction safety along the subway is poor due to the fact that the construction speed of a grab machine is unreasonable is solved.
Owner:HENAN VOCATIONAL COLLEGE OF WATER CONSERVANCY & ENVIRONMENT

Building waterproof device for entrance above subway line

The invention relates to a building waterproof device for an entrance above a subway line. The building waterproof device comprises a first supporting structure, a second supporting structure, a first connecting structure, a second connecting structure, a reinforcing structure and a ceiling structure. The first supporting structure comprises a height-adjustable first supporting vertical beam and a walking mechanism, adapts to terrains and is convenient to move; each connecting structure strengthens the stability of the supporting system, and a plurality of groups of connecting flanges and reinforcing rods ensure stability; the ceiling structure is in a major arc shape, a water baffle and a sealing layer guarantee waterproofness, and the supporting frame set optimizes stress. And the telescopic rod with the reinforced structure realizes stable support and stress dispersion. The device has the advantages of excellent waterproofness, stable support, flexible adaptation, strong structure, easy maintenance and the like, is suitable for construction and transformation of subway line entrances, and can effectively resist severe weather and guarantee safe and smooth subway operation.
Owner:GUANGXI CONSTR ENG GRP NO 1 CONSTR ENG

Shield construction method for underneath passing of existing operating subway line

The invention discloses a shield construction method and a heating device for underneath passing an existing operation subway line, and the method comprises the steps: obtaining a structure deformation cloud picture according to the position relation between a shield tunnel and an existing line and in combination with soil layer parameters; shield tunneling five-stage settlement control is carried out on the basis of the structural deformation cloud picture; wherein the shield tunneling five-stage settlement control comprises cutter head front settlement control, cutter head excavation position settlement control, shield tunneling machine right upper part settlement control, shield tail segment part settlement control and formed tunnel upper part lag settlement control. The problem that an existing construction method easily causes settlement or displacement overrun of an existing operation subway line can be effectively solved.
Owner:RANKEN RAILWAY CONSTR GROUP

Subway station passenger flow prediction method, device, equipment and storage medium

The present application relates to a method, device, equipment and medium for predicting the passenger flow entering a subway station. The method includes: determining bus passengers who meet the first preset demand as the first target passengers, and determining subway passengers who meet the second preset demand as the second target passengers; for the departure point to the destination, according to the time the first target passenger takes to take the bus and the time he takes to take the subway line containing the new line station, determining the probability of inducing an increase in the first target passenger at the predicted station; according to the time the second target passenger takes to take the old line station and the time he takes to take the subway line containing the new line station, determining the probability of losing the second target passenger at the predicted station; according to the initial passenger flow entering the station to be predicted, the above-mentioned probability of inducing an increase and the number of the first target passengers induced, the above-mentioned probability of losing and the number of the second target passengers lost, determining the target passenger flow entering the station to be predicted. This method improves the accuracy of the prediction of passenger flow entering the station.
Owner:PCI TECH GRP CO LTD +1

Intelligent management method of portable box for subway riding

The invention provides a portable box intelligent management method for subway riding, and relates to the technical field of data management, and the method comprises the steps: calling portable box management logs of K stations of a target subway line in a preset historical window, carrying out the index extraction of the logs according to the indexes of the usage amount, the storage amount and the in-cabinet ownership, and carrying out the index extraction of the logs; traversing each index set to carry out index centralized trend analysis, determining mobility factors of K stations, further obtaining deployment coefficients of the K stations, carrying out fluctuation identification to obtain steady-state coefficients of the K stations, identifying the deployment and steady-state coefficients by using a monitoring step length identifier to determine monitoring bandwidth sets of the K stations, and carrying out monitoring on the monitoring bandwidth sets of the K stations; a portable box monitoring transmission branch is constructed for monitoring management, the problems of congestion in the security check process, inconvenience for passengers and increased management cost caused by the fact that articles of the passengers cannot be managed efficiently and conveniently are solved, and the effects of improving the operation efficiency and safety of the whole subway network and ensuring the riding and management experience are achieved.
Owner:TIANJIN LINE 3 RAIL TRANSIT OPERATION CO LTD

Shield launching construction method for inclined line exchange station

The invention provides a line inclined exchange station shield launching construction method, and relates to the technical field of subway line shield launching. According to the construction method, reinforcing steel bars are implanted into side walls, a bottom plate and a top plate in an original subway line, so that the structure of the reinforcing steel bars is perpendicular to a newly-built subway line, concrete is poured, and a tunnel portal structure is constructed; the original subway line is guaranteed to be perpendicular to the newly-built subway line through the tunnel portal, then when the shield tunneling machine conducts construction, the shield launching end wall is perpendicular to the line, a cutter head of the shield tunneling machine is made to be parallel to a tunnel face, it is guaranteed that stress is even when the shield tunneling machine conducts construction, the tunneling process is along the axis, precision is high, and deviation or rotation does not occur; the safety of the construction process is effectively improved, meanwhile, it is guaranteed that the shield tunneling machine cannot be damaged due to uneven stress, the construction progress is guaranteed, and the technical problems that an existing shield tunneling machine is uneven in stress and prone to deviation when starting on the oblique crossing line, the underground excavation construction period is long, and the cost is high are solved.
Owner:CHINA RAILWAY 13TH BUREAU GRP 6TH ENG COMPANY +1

Graphical user interface for displaying subway station location information on electronic devices

1. Name of the product in this design: Graphical User Interface for Displaying Subway Station Location Information on Electronic Devices. 2. Purpose of this design: To display the location of subway lines and stations. 3. The key design features of this product are its graphical user interface. 4. The image or photograph that best illustrates the design's key features: the front view. 5. Purpose of the graphical user interface: Used for human-computer interaction interfaces for subway lines and station locations. 6. Human-computer interaction method of graphical user interface: The main view is the start interface; click the icon of unchecking "map background" in the lower right corner of the main interface to enter the interface change state diagram 1. The interface change state diagram 1 is the map view by default, and a custom-drawn subway line map can be displayed on the tile map.
Owner:HENAN BRILLIANT URBAN RAIL TECH CO LTD