1110 results about "Transportation safety" patented technology

Apparatus, method, and system enforce compliance with Transportation Safety Policies (TSP) governing vehicle fleets, subways, trains, busses, airplanes, etc.The apparatus identifies, authenticates, authorizes and logs-in all drivers / operators before enabling vehicle operation. Assigned privileges are granted to Transportation Safety System (TSS) enrolled drivers / operators. After drivers / operators log-in, the apparatus detects, reports, and alarms safety violations to the governing TSS. Biometric log-in precludes driver / operator repudiation.In preferred embodiments, biometric readers and / or card-based fingerprint readers are mounted into vehicle dashboards for driver / operator authentication / log-in.The invention helps reduce inattentiveness accidents due to unauthorized wireless use (phoning, texting, Internet, games, etc.). Unauthorized wireless usage by drivers / operators is detected in driving and control areas. All unauthorized activity is logged, alarmed and / or reported to Transportation Safety System administrators, depending on incident type, severity, and / or safety violation.Remediation action varies from issuing warnings, to logging violations, to incapacitating vehicles forcing safety stops requiring supervisory intervention.

The invention provides a vehicle dynamic information system based on GPS (global position system) satellite positioning and an ECU (electronic control unit). The vehicle dynamic information system comprises a vehicle information acquisition module which is used for acquiring GPS positioning information and status information of a vehicle and is arranged on the motor vehicle, and a vehicle GPS data analysis module, a vehicle status data analysis module, a video data analysis module and a GIS (geographic information system) module which are arranged on a service side, wherein the vehicle information acquisition module can automatically obtain GPS positioning data and vehicle travelling computer data; after data compression and code conversion, the data is transferred to a gateway server to be received through a GPRS (General Packet Radio Service) / GSM (Global System for Mobile Communications) network; the gateway server can convert and decode the data to obtain a terminal original record which is then stored in a database; an end user can access the system through a WEB browser and can check the vehicle dynamic data. The vehicle dynamic information system provided by the invention has the advantages that the problems such as poor transportation safety, traffic jam and environmental pollution are effectively solved, the traveling efficiency of the vehicle is also improved, the probability that the vehicle is stolen is lowered, and the private use of government vehicles is reduced.

The invention discloses a separate-orbit CubeSat launching device for carrying or launching a single or a plurality of standard CubeSat. The separate-orbit CubeSat launching device mainly comprises a rectangular framework, an unlocking mechanism and a spring mechanism, wherein the rectangular framework is mainly constructed by connecting a cabin door, a baffle plate, bottom plates, side plates, upper cover plates and a back cover plate in a threaded way; a separate guide rail is arranged as a satellite slide rail; a rotary electromagnet and the like are taken as the unlocking mechanism; the spring mechanism comprises a push plate and pressure springs. The separate-orbit CubeSat launching device has high generality, and is low in cost; the transportation safety and launching reliability of satellites can be ensured, displacement of the satellites during transportation can be prevented, and the cabin door is not collided with a running platform or reversed in an opening process; moreover, a push plate anti-separation measure and the like are adopted.

The invention discloses a freight transportation safety evaluation model based on a man-vehicle-road-freight multi-risk source. The model is characterized in that a freight transportation safety sensing system is constructed and driver, vehicle, road (environment) and freight information is obtained; a causing factor of a freight vehicle accident is analyzed by using an accident causation theory, attribute sets of four kinds of man, vehicle, road, and freight risk sources are defined, and the attributed sets are analyzed and screened by using an accident tree analysis method; according to the screened attribute sets, a freight transportation safety risk index system is built by using an analytic hierarchy process and weights of the driver, vehicle, road(environment) and freight information factors for accident occurrence are determined; and according to the established integrated freight risk evaluation index system as well as all evaluation index weights, a freight transportation safety risk evaluation model is established by using a fuzzy evaluation theory. Therefore, the technical support for intelligent early warning can be provided for the road freight transportation safety work.

The invention discloses a cold chain transportation safety remote monitoring system which comprises a vehicle-mounted intelligent monitoring terminal, a central server, a client terminal and network equipment. The vehicle-mounted intelligent monitoring terminal comprises a microprocessor, a Beidou / GPS (global positioning system) positioning module, a communication module, a power source, a power source management module, an acceleration sensor, a data storage module, a diagnosis module and an anti-dismantle alarming module, the central server comprises a database server, a communication server, a backup server and a plurality of workstations, the client terminal is a PC or an intelligent phone, and the network equipment is used for forming an internal local network and a private wire network with mobile terminals. By the system, temperature and humidity of cold chain vehicles or cold chain transport cases conveying different preservation products are monitored in real time respectively on a same platform to control the temperature and the humidity within set temperature-humidity wave peak values, so that cold chain working effect is guaranteed.

The invention discloses an OBD-based vehicle quality dynamic measuring device and an OBD-based vehicle quality dynamic measuring method. The OBD-based vehicle quality dynamic measuring device comprises an OBD interface and an embedded measuring device body. An OBD can output driving data such as engine torque, vehicle position, vehicle speed and vehicle acceleration in real time; the embedded measuring device body is used for processing and analyzing data acquired from the OBD interface. The real-time, rapid and accurate measurement of vehicle quality is completed during the vehicle driving process by adopting the OBD-based vehicle quality dynamic measuring method disclosed by the invention. The OBD-based vehicle quality dynamic measuring method and device overcome the defects of low efficiency, low speed and poor precision of the traditional vehicle quality measuring method, are suitable for real-time measurement of vehicle quality, can perform effective monitoring on situations such as vehicle overload, hazardous article leakage in the transportation process and loss of goods, and play good supporting roles in standardizing traffic safety management, improving logistics transportation safety and guaranteeing economic benefit.

The invention provides an algorithm for intelligently generating a case loading scheme based on multiple constraint conditions. The algorithm is characterized by, one the basis of combining actual situation of case loading and fully considering main factors influencing case transport safety and case loading utilization rate, constructing a case balance loading optimization model, designing a corresponding solution algorithm, that is, a case loading algorithm comprising a balance adjustment algorithm, and providing a three-dimensional graph case loading scheme. Results show that the system cancalculate the case balance loading scheme of cargos in a case body quickly and efficiently, and can guide on-site workers to load the cargos quickly and accurately.

The invention relates to a construction transportation safety monitoring system. The construction transportation safety monitoring system comprises an intelligent handset of safety management personnel, an APP which supports a pipe-controlled camera mounted in the intelligent handset and is an application program used for receiving a positioning identification sign-in notification function, a wireless holder camera which supports a GPS module, is equipped with a program and an execution device which are controlled by the intelligent handset APP, realizes camera access through WLAN and is mounted to realize coverage of a construction transportation monitoring place, a camera transfer information processing background system which accomplishes intelligent handset end authentication and realizes inter-NAT camera control connection transfer processing, and a biology identification background system for a construction transportation field and safety management personnel which compares safety management personnel shooting pictures with background database pictures and informs the intelligent handset APP of an identification result, wherein a camera further associates GPS information with videos / pictures and transmits a result to the background systems, the wireless holder camera carries out time information association between the designated videos or pictures and the GPS position information, and the videos or the pictures to form a report which is sent back to the intelligent handset.

The present invention discloses a road surface dust suppressant and a preparation method thereof, wherein the road surface dust suppressant comprises 1-3% of a water-soluble macromolecule polymer, 0.5-1.5% of sodium polyacrylate, 0.5-1% of urea, 0.2-0.5% of an anionic surfactant, and the balance of water. According to the present invention, the road surface dust suppressant can be applied in road dust suppression, earth work dust emission treatment in mine exploitation, mine field road transportation and municipal construction, and other fields so as to effectively solve the problem of dust pollution, ensure transportation safety and health safety of motorcyclists and staffs around, reduce the maintenance cost of the transportation equipment, increase the service life of the equipment, and especially solve the problem of rolling dust emission of the heavy duty transportation tool.

The invention discloses a multi-channel data acquisition device for a submarine pipeline magnetic flux leakage internal detector. The multi-channel data acquisition device comprises a hall sensor, a multi-path switch, an instrument amplifier, an analog-to-digital (AD) conversion module, a field programmable gate array (FPGA), a digital signal processor (DSP) and a secure digital memory (SD) card, wherein the multi-path switch has a two-stage series structure; the multi-channel data acquisition device is provided with heat insulation cotton so as to adapt to a specific high-temperature and high-corrosion environment of a submarine pipeline; the hall sensor converts the magnetic induction density into voltage; the voltage is switched by the multi-path switch, so that a signal is transmitted to the instrument amplifier; the instrument amplifier amplifies a weak signal; the AD conversion module sets sampling for eight times through software, performs analog-to-digital conversion, and transmits a digital value to the FPGA after the conversion; and the DSP receives FPGA cached data, digitally filters and compresses the cached data, and finally stores the data into the SD card. Due to a dual central processing unit (CPU) structure consisting of the FPGA and the DSP, a large amount of data can be stored and processed; the device has the characteristics of high speed, multiple channels, high resolution and the like; furthermore, pipeline transportation safety is guaranteed; and early maintenance is facilitated.

The invention provides a vehicle dynamic information public service platform. The main functions of the platform comprise vehicle dynamic information access management, vehicle dynamic information appraisal management, vehicle dynamic monitoring management, comprehensive query and analysis, operator supervision, data share, interface management and system management. The platform is capable of improving the ability of acquiring various pieces of transportation safety information in time, the ability of supervising the road transportation vehicle safety and the ability of carrying out appraisal management on the operator service level, comprehensively improving the information service level, reducing the incident occurrence rate, enhancing the traffic transportation efficiency, decreasing the life and property loss of people to the greatest extent, and enabling the trips of the people to be more secure, more relieved and more convenient.

The invention discloses a logistics vehicle management system based on RFID and Beidou positioning, comprising a vehicle scheduling control module, a server and a client, wherein the vehicle scheduling control module is connected with the server through internet, and the server is connected with the client through internet; the logistics vehicle management system also comprises a third-party transaction module, a data mining module and a Beidou vehicle-mounted positioning terminal which are arranged between the server and the client, and also comprises a man-machine operation module and an RFID electronic tag generation module which are connected with the vehicle scheduling control module. The logistics vehicle management system disclosed by the invention can effectively help enterprises to strengthen the safety management of transportation, improve the vehicle delivery rate and service quality, improve the overall operation efficiency, reduce the logistics operation cost, and comprehensively increase the economic benefits of the enterprises; and the logistics vehicle management system is high in intelligent degree and convenient for the management of the enterprises, ensures that the labor cost is reduced, and also ensures that the vehicle conditions and cargo conditions in the logistics process can be real-timely monitored and traced.

The invention discloses an aqueous neoprene type environment-friendly glue which comprises aqueous rosin emulsion with low grain diameter and high stability, aqueous acrylic resin emulsion, ethane-vinyl acetate emulsion, anion type neoprene latex, aqueous foam suppressor, wetting dispersant, preservative, tackifier, nanometer calcium carbonate concentrated slurry, aerosol, and the like. The invention also discloses a preparation method of the aqueous neoprene type environment-friendly glue; the aqueous neoprene type environment-friendly glue takes water as a dispersed media, is uniform milky liquid, has the comprehensive advantages of no organic solvent, no heavy metal, insipidity, good initial adhesive force, excellent bond strength, excellent hold tack, excellent heat resistance and aging resistance, short drying time, long opening time, large spray area of unit weight, glue saving, excellent oily leather resistance, fireproofing, safe transportation, and the like, has the advantages of reducing environment pollution, improving operation and construction environment, saving large amounts of organic fuel, insipidity, and the like, is widely applied to industries of soft furniture of cases and bags, sofas, swivel chairs, mattresses, pillows, folding screens, and the like, and is especially suitable for application of green high-grade export products of occident.

The invention discloses a vehicle speed induction control method for reducing probability that a vehicle breaks a yellow light. The method comprises the steps of basic transportation data collection, vehicle running state detection, vehicle running state judgment, and automatic vehicle speed induction control. According to the method, detection of vehicle running state and collection of speed and position information of a vehicle are carried out in real time through a vehicle-mounted global position system (GPS). Comparison is carried out through running data of the vehicle and a signal timing scheme of a downstream intersection, a possible signal phase when the vehicle reaches the intersection is prejudged, and the vehicle is pointedly induced to run through the intersection at the optimal running speed or braking measures is timely adopted to reduce risks that the vehicle breaks the yellow light. According to the method, an existing road network configuration and signal control mode is needless to change, investment is small, calculation and actual operation are benefited through the method, practicability is strong, running efficiency of motor vehicles on intersections can be promoted, transportation safety is guaranteed, and great practical significance is achieved.

The invention discloses an engine material rest comprising a material rest body. The material rest body is provided with at least an engine placement work station; the position of the work station corresponding to a positioning part of an engine is provided with a plurality of fixed positioning pieces and a plurality of adjustable positioning pieces. The engine material rest can simultaneously install a plurality of engines of different types and specifications to completely fix the engines so as to guarantee the transportation safety; different number of material rests can be stacked according to the condition requirements of field and transportation vehicles, so that the transportation efficiency is improved. The engine material rest is operated simply and flexibly, and reduces the labor intensity of workers.

The invention belongs to the technical field of transportation safety, and discloses a lane-changing pre-warning system and method capable of achieving driving habit recognition. A millimeter-wave radar, a data collector and other devices are installed on a vehicle to collect data, so that the lane-changing data in the vehicle operating process is obtained, the driving habits of each driver are judged, and the lane-changing pre-warning system capable of achieving driving habit recognition is formed. Accordingly, in the actual situation, when an abnormal state of a driver appears in the lane-changing driving process, the driver is warned reasonably, and major vehicle accidents are avoided from being caused.

The invention relates to a glass transportation container. The glass transportation container comprises a container body; chutes are symmetrically and horizontally formed in front and back two side surfaces of the container body; multiple baffle plates are horizontally arranged in the chutes in a manner of sliding left and right; an A-shaped bracket is detachably arranged in the container body; glass plates are aslant butted against front and back two side surfaces of the A-shaped bracket; tension devices are arranged between the baffle plates on the left rights and / or the right sides of the glass plates and a container body baseplate; and the tension devices tend to force the baffle plates on the left sides and / or the right sides of the glass plates to butt against the glass plates so as to fasten the glass plates from the left sides and / or the right sides. The glass transportation container effectively reduces the resource waste, reduces the binding times, improves the glass transportation safety coefficient, and improves the working efficiency.

The invention discloses a method and device for switching an intelligent lock, a security and protection vehicle-mounted system and a security and protection monitoring system. The security and protection monitoring system comprises a background client, an intelligent mobile phone and the security and protection vehicle-mounted system. The intelligent mobile phone and the background client are respectively communicated with the security and protection vehicle-mounted system in a wireless communication way. The security and protection vehicle-mounted system comprises a main controller, a sensor for detecting cargo state information, a camera for making a video or a photograph, an electronic lock, a positioning module for positioning vehicle position information, a wireless communication module for transmitting and receiving data, an operation panel for setting work parameters of the main controller, and a human-computer interface for monitoring a cargo state and alarm information. The security and protection monitoring system improves logistics transportation safety, reliability, convenience and flexibility.

Apparatus, method, and system enforce compliance with Transportation Safety Policies (TSP) governing vehicle fleets, subways, trains, busses, airplanes, etc.The apparatus identifies, authenticates, authorizes and logs-in all drivers / operators before enabling vehicle operation. Assigned privileges are granted to Transportation Safety System (TSS) enrolled drivers / operators. After drivers / operators log-in, the apparatus detects, reports, and alarms safety violations to the governing TSS. Biometric log-in precludes driver / operator repudiation.In preferred embodiments, biometric readers and / or card-based fingerprint readers are mounted into vehicle dashboards for driver / operator authentication / log-in.The invention helps reduce inattentiveness accidents due to unauthorized wireless use (phoning, texting, Internet, games, etc.). Unauthorized wireless usage by drivers / operators is detected in driving and control areas. All unauthorized activity is logged, alarmed and / or reported to Transportation Safety System administrators, depending on incident type, severity, and / or safety violation.Remediation action varies from issuing warnings, to logging violations, to incapacitating vehicles forcing safety stops requiring supervisory intervention.

The invention discloses an active prevention and control system for vehicle transportation safety. The active prevention and control system comprises an infrared distance measuring sensor, a video acquisition module, a main control chip, an analysis module, a cloud server, an intelligent navigation system and a terminal module, wherein the infrared distance measuring sensor is used for measuring the distance between a vehicle and other vehicles, and the video acquisition module is used for acquiring video information of a driver in the driving process; and the main control chip is used for analyzing and processing the acquired information, judging whether the vehicle is currently in a safe distance or not and whether the driver is in a fatigue driving state or not, and forwarding an analysis result to the terminal module through the cloud server to remind the driver. According to the active prevention and control system, the driving distance and the state of the driver can be effectively monitored, and active early warning is carried out on non-safe distance and fatigue driving, so that the driving safety performance is improved, and a guarantee is provided for the life safety of the driver.

The invention relates to a foldable trimaran side sheet. The foldable trimaran side sheet is composed of a sheet body, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first rotation pair, a second rotation pair, a third rotation pair and a fourth rotation pair; the sheet body is hollow and streamlined in appearance, and the cross section outline of the sheet body is in the shape of a deep V; self-locking devices are arranged in the first rotation pair, the second rotation pair, the third rotation pair and the fourth rotation pair, and when the connecting rods rotate to the needed angles, the connecting rods can be locked in the states by the self-locking devices; through telescoping and folding of the four connecting rods, the foldable trimaran side sheet can achieve three working states including the stretching state, the contracting state and the V-shaped state. According to the foldable trimaran side sheet, the speed controllability and the maneuverability of a trimaran are effectively improved; the structure is simple, use is convenient, the foldable trimaran side sheet can be applied to ship braking, emergency collision preventing among ships and port entering and exiting and anchoring of the trimaran, and the very important significance for the ship transportation safety and ship maneuverability is achieved.

The invention provides an item packaging mode selecting method. The method includes steps of determining purchased items and calling item data information and package data information of the purchaseditems; determining the packaging mode and each item in the purchased items and the size of each item after packaging according to the item data information and the package data information; determining the final packaging mode of the purchased items according to the size of each item after packaging. A proper packaging mode can be given according to the purchased items in random combination of different users. The package of each item is determined first, and then the packaged items are placed into a proper container in the optimal arrangement. Therefore, resource is saved and packaging transportation safety is ensured.

In a network for a safety system in a transportation system, the transportation system includes a shaft and a car arranged in the shaft. A first wall node is at a first end of the shaft and a second wall node is at a second end of the shaft to communicate safety messages with the car. Each wall node includes at least one wireless transceiver connected to one or more antennas. Each car in the shaft includes at least two wireless transceiver connected to one or more antennas, wherein the first transceiver of the car uses a first frequency and the second transceiver of the car uses a second frequency to communicate each safety messages in duplicate. A wired backbone connects the set of wall nodes to a controller of the safety system of the transportation system.

The invention relates to the field of transportation, and discloses a computer part transportation mechanism. The mechanism comprises a rack, a conveyer belt, a plurality of tote boxes; grooves are formed in the tote boxes; placing plates are glidingly connected in the grooves; a cylinder body is mounted in a lower groove; two sliding plates are glidingly connected in the cylinder body; a dust collection chamber is formed between the surfaces, far away from an extrusion chamber, of the sliding plates and the cylinder body; the dust collection chamber is communicated with an air cavity; movinggrooves are formed in two sides of the bottom of the placing plate; first struts are fixed on the surfaces, far away from the extrusion chamber, of the sliding plates; one ends of the first struts penetrate through the dust collection chamber and are glidingly connected in the moving grooves; movable cavities are formed in both two sides of the groove; each movable cavity is internally provided with an extrusion air bag, an oscillating bar and a support rod; and the end of the placing plate penetrates into the movable cavities and is hinged with one ends, far away from a cross bar, of the oscillating bar. According to the mechanism, computer parts can be prevented from being damaged in the transportation process so that the computer part transportation safety is improved, and ash removal can be carried out on the computer parts so that the cleanliness of the computer parts is improved.

The invention relates to an intelligent monitoring system and an intelligent monitoring method for storage and transportation packing cases. The system comprises a power supply module, a state monitoring module, a storage and memory module, a system control module, a wireless communication module, a server used for data receiving, storing and forwarding, and a client used for sending a control command to the server and connected with the server. The system is adopted in the method to complete operation. According to the intelligent monitoring system and the intelligent monitoring method for storage and transportation packing cases, a multi-sensor data fusion technology is adopted to monitor the temperature, humidity and other information of goods in the storage and transportation process in real time, alarm is issued when the temperature, humidity or CO2 exceeds the standard or a case is opened illegally, temperature and humidity change and geographical information in the storage and transportation process can be recorded, and such functions as goods state monitoring, safety alarm and whole-process goods information tracing are achieved. The internal environment conditions of a storage and transportation packing case can be monitored, monitoring of abnormal opening is realized, and the transportation safety is improved.

A safety method for rhinogobio ventralis long-distance transportation comprises the following steps of 1 controlling the temperature of a water body; 2 adding penicillin; 3 adding anesthetic to perform first-step anesthesia; 4 rapidly transferring rhinogobio ventralis to a transportation water body of a transportation device; 5 adding the anesthetic to perform second-step anesthesia; 6 adding oxygen into the transportation water body, namely ensuring 10-20hour long-distance transportation safety of the rhinogobio ventralis. A safety transportation device for rhinogobio ventralis long-distance transportation comprises a box body and a box cover which are connected through hinges, the box body consists of an inner vat, an ice storage vat and a heat preservation layer which are sequentially arrange from inside to outside, and an ice storage layer is formed between the inner vat and the ice storage vat. The box cover is provided with a groove which is in a shape of a Chinese character 'hui' and matched with the inner vat and the ice storage vat. The safety method and the transportation device for the rhinogobio ventralis long-distance transportation greatly improve the survival rate of the rhinogobio ventralis in the long-distance transportation and achieve the 10-20hour long-distance transportation safety.

The invention discloses a public transport travel control method and device, a computer device and a storage medium. The method comprises: obtaining face images of one or more passengers entering a public transportation jurisdiction area, and enabling the face images to comprise face contour characteristics; matching a face image in a preset database, wherein the preset database comprises the collected face image and a set of identity information and account information mapped with the face image; and detecting whether the face image satisfies a preset condition, and when the face image satisfies the preset condition, allowing passage and paying the traffic fee from the account information mapped by the face image. The whole process is simple and convenient, multiple persons can be read atthe same time, the recognition speed and the passing speed of the passengers are increased, the riding time is saved, automatic payment is achieved, and the passengers can ride more conveniently. Byobtaining the identity information of the passengers, the passengers can be monitored conveniently, lawbreakers are prevented from being mixed into public transportation places to be disordered, and the public transportation safety order supervision strength is improved.

The invention discloses a steel rail used for high-speed and quasi-high speed railways and a manufacturing method thereof. The method comprises: reducing carbon content and utilizing a mode of controlled cooling after rolling to manufacture the steel rail with favorable rolling contact fatigue performance. The steel rail comprises the following chemical compositions by weight percent: 0.40%-0.64% of C, 0.10%-1.00% of Si, 0.305-1.50% of Mn, less than or equal to 0.025% of S, less than or equal to 0.005% of Al, greater than 0% and less than or equal to 0.05% of rare-earth elements, greater than 0% and less than or equal to 0.20% of at least one of V, Cr and Ti and the balance of Fe and inevitable impurities. The steel rail manufactured by the method of the invention maintains the strength and hardness of the existing steel rail of the high-speed railways, and simultaneously has improved plasticity and yield strength; and the energy value needed for initiation and expansion of fatigue microcracks formed on the surface of the steel rail is improved, thus the rolling contact fatigue performance of the steel rail can be improved under the same condition, and finally the service life and transportation safety of the steel rail are improved.

The invention relates to multi-wave packet wide cover undersea topography landform detecting device. It includes above and under water extensions, cable. The above water extension is made up of embedding type integration industrial personal computer, signal processing, collecting, pre-processing, and adjusting devices, storage. The under water extension is made up of signal generating and emitting devices, multi channel emitting and receiving transducer arrays, signal amplifying device. The invention adopts multi channel emitting and receiving transducer array and advanced signal processing technique to gain wide cover undersea topography and landform information to increase marine charting efficiency and precision. Thus it can be widely used in water traffic transportation safety guard, laying submarine cable, and sinks salvaging etc.

Disclosed is a jacking construction method for city road frame bridge upper-penetrating an operation subway and lower-penetrating an operation railway. The jacking construction method fundamentally solves the feasibility of lower-penetrating the existing railway and upper-penetrating the subway simultaneously of the road frame bridge, a series of technical measures are adopted, and transportationsafety of the existing railway and the subway in the whole construction process is ensured. Compared with other construction methods in the background technology, the construction efficiency is improved, the safety risk is reduced, the construction cost is saved, and the construction method is easy to operate and control. The series of technical measures such as existing railway structure reinforcement and subway anti-flotation are adopted, all kinds of technical measures depend on one another and are interrelated, and finally, three structures of the road frame bridge, the existing railway and the subway form a whole structure of non-interference and interrelation.