44 results about "Bridge Collapses" patented technology

The invention belongs to the technical field of bridge monitoring, and particularly relates to an intelligent detection and early warning method and system for bridge collapse, and the method achieves the continuous and synchronous monitoring of a key region of a bridge through the deployment of a composite sensing node with a multi-physical field sensing capability. The time-frequency domain joint analysis and empirical mode decomposition technology is combined to effectively separate environmental interference and structure real response components; constructing a local rigidity evolution trajectory based on the structural response dominant component, and identifying a starting moment when the rigidity is significantly reduced by using a dual-threshold criterion; and multi-scale precursor features in the damage evolution process are further mined through time alignment recombination, space thermodynamic diagram generation and multi-region collaboration analysis. According to the method, the accuracy of small damage identification and the reliability of early warning are remarkably improved, the structure performance degradation process can be stably tracked under the actual service condition with complex environmental interference, and interpretable and traceable intelligent early warning support is provided for the bridge collapse risk.

The invention relates to the technical field of highway bridge demolition, in particular to a mechanical demolition construction method for a slant leg rigid frame bridge. Through the means of combining on-site actual measurement and numerical simulation analysis, a non-linear refined bridge demolition model is adopted, and the whole construction process of bridge mechanical demolition is reasonably simulated. And performing whole-process finite element analysis and comparison on the to-be-broken bridge to accurately obtain the collapse state of the bridge and the deflection limit value of the collapse of the bridge. Bridge breaking is carried out according to the optimal breaking sequence, and risk early warning can be effectively carried out. According to the technical scheme, on the basis of the scheme, real-time monitoring is further carried out in the whole forcible entry process through a strain sensor and long-distance deflection measuring equipment. And the construction risk of mechanical forcible entry is further reduced.

The invention relates to the technical field of road safety, in particular to an instant warning method and device after road collapse and bridge collapse, metadata features on a to-be-warned road are obtained, to-be-warned road maintenance features of the to-be-warned road are collected, and a road recognition candidate risk area is determined according to the to-be-warned road maintenance features; obtaining a related risk area set and an evaluation and warning risk area set corresponding to the road identification candidate risk area, and delimiting an accurate risk area according to the related risk area set and the evaluation and warning risk area set; and collecting vehicle navigation information of a driving vehicle set, and laying circuits and warning facilities in the accurate risk area according to the vehicle navigation information. The method can effectively associate the similar conditions of the to-be-warned road based on the multi-dimensional features, warns the passing vehicles to slow down and stop in time, prevents the vehicles from entering a disaster area, and guarantees the life and property safety of road users.

The invention relates to an expressway bridge collapse identification and early warning method based on vehicle dynamic monitoring, which belongs to the technical field of bridge safety monitoring, and comprises the following steps: if a vehicle falls into a bridge in a target bridge section, comparing with a bipartite model threshold based on a vertical acceleration, a vertical acceleration change rate and a three-axis resultant acceleration; whether the vehicle falls on the bridge or not is judged; under the condition that the vehicle falls to the bridge and falls to the water surface, the number of vehicles falling to the bridge, the first disaster correlation of the weather data associated with the vehicle falling to the bridge and the second disaster correlation of the social media data associated with the vehicle falling to the bridge are obtained; determining the credibility of the collapse state of the target bridge section based on the number of the vehicles falling into the bridge, the first disaster correlation of the vehicles falling into the bridge associated with the meteorological data and the second disaster correlation of the vehicles falling into the bridge associated with the social media data; and based on the credibility of the collapse state of the target bridge road section, issuing early warning information of the collapse state of the target bridge road section.

The application relates to a bridge collapse identification method and system based on vehicle mobile terminal sensing data, and belongs to the technical field of bridge safety monitoring. The method comprises the following steps: in the case that a target vehicle is determined to be located on a bridge section based on relative positions, monitoring driving acceleration of the target vehicle according to IMU data of a vehicle mobile terminal; in the case that a mutation occurs in vertical acceleration in the driving acceleration of the target vehicle, judging whether the target vehicle appears a bridge falling state caused by bridge collapse based on the vertical acceleration and synthetic lateral acceleration; if the target vehicle appears the bridge falling state caused by bridge collapse, obtaining jerk of the vertical acceleration, and determining bridge falling time information of the target vehicle based on the jerk; and based on the bridge falling time information of the target vehicle and falling heights of multiple vehicles when falling off the bridge, adjusting the credibility of the bridge collapse based on the falling heights of the multiple vehicles when falling off the bridge, so as to improve the determination accuracy and credibility of the bridge collapse state.

The utility model discloses a bridge collapse warning device, which relates to the technical field of disaster early warning and comprises a traction connecting device, an alarm device and a fixed guide device, one end of the traction connecting device is fixed at any position on a tunnel portal or a bridge, and the other end of the traction connecting device is connected with the alarm device; the alarm device gives an alarm when the traction connecting device is separated and disconnected; the fixed guide device is arranged at the bottom or the side edge of the bridge in the length direction of the bridge, and the traction connecting device penetrates through the fixed guide device. The bridge collapse warning device is installed on a side guardrail of a bridge through the steel wire rope and the connecting pipe, the switch can be triggered to be closed through the steel wire rope after the bridge collapses, so that a closed-loop circuit is formed among the switch, the warning lamp and the power supply, and the warning lamp emits warning light at the position, 100-150 m away from the bridge, in a tunnel. The warning device plays a role in warning vehicles going to enter the bridge, effectively eradicates or reduces major safety accidents caused by collapse of the bridge on the mountainous road, and guarantees driving safety on the bridge and the road in the mountainous area.

The invention discloses a test method for judging whether a damaged T-beam bridge target can meet the passing requirement of an armored vehicle, and belongs to the field of test and evaluation. According to the method, factors such as brake, wheel track and wheel base of the armored vehicle are considered, an equivalent loading block is used for simulating the armored vehicle, and a loading test is carried out at the most unfavorable position of a T-beam bridge target through graded load loading. If the bridge collapses in the loading process, taking a lower level of load to represent the target traffic capacity of the damaged T-beam bridge; and if the bridge is not collapsed, loading a larger level of load until the load is loaded to the maximum tonnage of the simulated armored vehicle, and finally judging whether the T-beam bridge target can meet the passing of the armored vehicle or not. According to the test method, the equivalent loading block is used for replacing the armored vehicle, a graded load loading mode is used, the traffic capacity of the damaged T-beam bridge target is obtained, the test cost is saved, safety risks are avoided, and accurate judgment can be provided for whether the military armored vehicle passes through the damaged T-beam bridge target or not.

The invention provides a traffic optimization and influence evaluation method based on a space-time traffic network model, and the method comprises the steps: constructing a space-time traffic network model, and obtaining space-time information based on a graph theory through the historical traffic flow data, and predicting the future traffic flow; the bridge collapse influence is evaluated, and traffic flow and stakeholders are involved; a multi-target bus route optimization model is constructed, bus station distribution is optimized, and multi-target optimization is achieved; determining an optimal traffic network project by using an analytic hierarchy process, and analyzing advantages and influences of the optimal traffic network project; according to the method, the space-time traffic network model is constructed, so that the traffic flow can be predicted, and particularly, the influence of emergencies on traffic is considered; through a bus route multi-objective optimization model, bus station distribution is optimized, the coverage rate of a bus network is improved, and the operation cost and the average commuting time are reduced; the traffic network project is comprehensively evaluated, the advantages of each project and the influence on different stakeholders are comprehensively analyzed, and a scientific basis is provided for traffic planning and decision making.

The embodiment of the invention discloses a method and equipment for determining ship-collision-resistant fortification ship type parameters of a bridge and a medium, and relates to the technical field of bridge risk assessment. The method comprises the steps that a ship-to-bridge collision model is constructed, and the ship-to-bridge collision model is used for reflecting the relation among ship-to-bridge displacement, mass and rigidity; determining a calculation formula of a net displacement ratio and an energy ratio of the ship and the bridge according to the ship-bridge collision model; according to the calculation formula and the law of conservation of energy, determining an expression of the initial navigational speed of the ship about the energy absorbed by the pier; determining a navigational speed threshold expression for preventing the bridge from collapsing under different ship tonnages according to the expression and the maximum threshold of the bridge pier displacement; and according to the ship speed threshold expression, determining fortification ship type parameters of the bridge pier. According to the embodiment, fortification ship type parameters can be determined according to bridge pier structure characteristics and service stages.

The application discloses a bridge collapse early warning method and system based on a bridge image and a neural network. The method comprises the following steps: acquiring a bridge image of a bridge prone to collapse; performing pretreatment and feature extraction on the bridge image to obtain bridge high-level features containing bridge structures and vehicle distribution; inputting the bridge high-level features containing the bridge structures and the vehicle distribution into a trained neural network model to output a prediction result of bridge collapse and vehicle drop; evaluating whether the bridge has a bridge collapse risk or a vehicle drop risk based on the prediction result of the bridge collapse; and performing bridge collapse early warning of a corresponding level according to the evaluation result of the bridge collapse risk or the vehicle drop risk. The application realizes bridge collapse prediction by extracting high-level features of a bridge image and combining a neural network, and can perform real-time early warning according to the predicted bridge collapse risk, thereby improving the accuracy of bridge collapse prediction and the real-time performance of early warning.

The invention discloses an inter-tunnel bridge collapse sound image grading early warning and inflation road sign laying system and method. The system comprises an optical fiber detection module, a broadcast early warning module, a sound image synchronous early warning module and an inflation road sign laying module. The optical fiber detection module monitors the inter-tunnel bridge state in real time, and when collapse risks are detected, an early warning instruction is sent out; the broadcast early warning module carries out broadcast early warning at the tunnel entrance according to the early warning instruction to remind passing vehicles to pay attention; the sound-image synchronous early warning module realizes sound-image synchronous early warning in the tunnel, so that the warning effect is enhanced; and after the inflatable road sign laying module receives the early warning instruction, two groups of inflatable traffic signs are laid at the upstream 2KM position of collapse of the inter-tunnel bridge. According to the invention, social vehicles can be effectively prevented from entering dangerous areas in advance, secondary accidents are avoided, reliable guarantee is provided for tunnel traffic safety, and the tunnel operation safety level is improved.

The invention discloses a servo top supporting method for overhead sensitive buildings and structures, and relates to the technical field of traffic engineering. The method comprises the following steps: S1, surveying and setting out; s2, blocking road traffic; s3, equipment entering; s4, top supporting equipment is installed; s5, initial pre-stress force is set; s6, performing automatic compensation; and S7, dismantling. The construction method is an innovative construction method different from a conventional shield underneath passing existing railroad bridge protection mode, the bridge can be supported when shield underneath passing railroad bridge construction is carried out, the risks of collapse and the like caused by excessive settlement of the bridge are avoided, the influence of shield construction is reduced, and the safety of the railroad bridge in the shield construction period is effectively ensured.

The invention discloses an expressway collapse warning system, which belongs to the technical field of early warning after road collapse, and comprises a collapse sensing warning unit, warning control relay units and an expressway control center, an expressway is divided into a plurality of relay control sections, each relay control section is provided with one warning control relay unit, and the warning control relay units are connected with the expressway control center. A landslide sensing and warning unit is arranged in a relay control section of an expressway at set intervals, and the landslide sensing and warning units, a warning control relay unit and an expressway control center form an ad-hoc network and self-powered communication network independent of external power supply network and power supply based on a wireless communication technology. According to the system, an ad hoc network and a self-powered communication network independent of external power supply network and power supply are adopted, the problem of monitoring failure caused by power grid interruption when emergency situations such as expressway collapse and bridge collapse occur is solved, related road management personnel can perform management and control in time, collapse information can be sent to drivers and passengers on the expressway in time, and the safety of the expressway is improved. Life and property loss caused by collapse of the expressway is reduced to the maximum extent.

The invention relates to an over-line continuous beam bridge jacking and horizontal rotating dismantling method which comprises the steps that rotary disc supports are erected around two main piers of a main span beam respectively, jacking supports are erected on the two sides of one rotary disc support, and jacks are arranged on the jacking supports; the midspan closure section and the two-side span closure section are cut off through a rope saw, and the main span beam is divided into two sections; a jacking support and a rotating disc support are alternately lifted to jack one section of main beam to be higher than the beam bottom and the beam surface of the other section of main beam, and then the two sections of main beams are horizontally rotated to the two sides of a road correspondingly to be dismantled. Smooth horizontal rotation of the main span beam body can be achieved without breaking and dismantling the midspan closure section during overall dismantling, so that the risks that the bridge collapses and fragments fall off the bridge in the bridge dismantling process are avoided, and construction safety is guaranteed.

The present application belongs to the technical field of intelligent transportation, and relates to a bridge structure state intelligent monitoring method and system based on multi-modal optical feature cross-validation. The present application ingeniously utilizes the existing and ubiquitous mobile light source (i.e. the vehicle lights of the driving vehicles) on the night road and the optical reflection target (i.e. the facade contour marker) on the bridge, takes the interaction of the two as a kind of new passive monitoring signal, combines the tail light point trajectory of the dynamically captured vehicles passing through the bridge, and constructs an intelligent monitoring system of cross-validation and mutual complementation by fusing the double optical feature abnormalities of the dynamic traffic flow (vehicle tail light) and the static facility (bridge marker anomaly), so as to realize the instantaneous early warning of the bridge collapse and other major risks with higher reliability and lower false alarm rate.

The utility model belongs to the technical field of bridge road safety monitoring and early warning, and mainly relates to a bridge collapse open circuit monitoring and early warning system, which comprises a UPS (Uninterrupted Power Supply) module, a data acquisition and processing module and an early warning module, the UPS power supply module comprises a solar panel, a lithium battery and a UPS power supply, and the solar panel and the lithium battery supply power to the UPS power supply module; the data acquisition and processing module comprises an upper computer, an optical transceiver A-end transmitting end, an optical transceiver B-end receiving end and a relay; the upper computer is connected with the A-end transmitting end of the optical transceiver, the B-end receiving end of the optical transceiver and the relay through serial port lines. According to the utility model, local early warning can be realized without an external network, and vehicles running on a lane are reminded outside a safe distance of a collapsed road section; remote transmission of road and bridge field collapse conditions can be realized, road states can be checked in real time at a mobile phone terminal, road management departments can find early warning in time and take effective measures such as circuit breaking in time, and further expansion of disasters is effectively prevented.

The invention relates to a bridge collapse dual-mode trigger grading early warning method, and the method achieves the grading early warning through the combined judgment of a risk through a dual-mode trigger mechanism based on data deviation and load type recognition, and the combination of the self-adaptive adjustment of a threshold value based on reinforcement learning. The invention further relates to an early warning system using the bridge collapse dual-mode triggering grading early warning method. The early warning system comprises a multi-mode data acquisition and abnormity triggering module, a model fine adjustment module, a risk judgment module and an optimization and synchronization module. According to the invention, the early warning response speed is improved, the balance of rapidity and reliability of the early warning system is realized, and the accuracy and practicability of the early warning system are improved.

The invention provides a road and bridge collapse warning system, which comprises a plurality of collapse warning devices and a collapse judgment device, and is characterized in that each collapse warning device comprises a sensor capable of sensing at least one of the vibration condition and the inclination condition of the collapse warning device; the processor is configured to send the sensor data generated by the sensor to the collapse judgment device, receive a collapse warning instruction indicating that road and bridge collapse occurs in the road and bridge areas corresponding to the plurality of collapse warning devices from the collapse judgment device, and give out an auditory or visual collapse warning signal in response to the collapse warning instruction; the collapse judgment device is configured to receive sensor data from the plurality of collapse warning devices and judge whether road and bridge collapse occurs in the road and bridge areas corresponding to the plurality of collapse warning devices based on the received sensor data; and when it is judged that road and bridge collapse occurs in the road and bridge areas corresponding to the plurality of collapse warning devices, a collapse warning instruction is sent to the plurality of collapse warning devices.

The utility model discloses a road bridge collapse and landslide early warning device which comprises a display assembly and an early warning assembly, the display assembly comprises a vertical pile, an LED display screen and an installation frame, the installation frame is fixed on the vertical pile, the LED display screen is fixed in front of the installation frame, an audible and visual alarm is arranged on the LED display screen, a right-angle frame is arranged on the upper side of the back face of the installation frame, and the right-angle frame is connected with the early warning assembly. A photovoltaic panel is obliquely arranged on the right-angle frame, a box body is arranged on the right-angle frame, a power source, a controller and an inverter are arranged in the box body, the photovoltaic panel is electrically connected with the power source through the inverter, and the early warning assembly comprises a pressure trigger sensor and a horizontal trigger sensor. Once relevant roads and bridges are abnormal (slight cracks and larger potential risks), the early warning assembly can be triggered to remind and warn vehicles.

The utility model relates to the technical field of earthquake resistance of civil engineering, in particular to a graded yield I-shaped mild steel damper for a bridge, which comprises an energy consumption system of the damper, an upper connecting component connected with a diaphragm plate at the bottom of a bridge and a lower connecting component connected with the top surface of a bridge pier, the damper can adapt to transverse displacement generated by bridge stress, so that the damper can bear longitudinal one-way force generated by bridge vibration and absorb longitudinal energy consumption, the vertical energy consumption steel sheets, the I-shaped energy consumption steel sheets and the X-shaped energy consumption steel sheets in the energy consumption system are different in yield strength and form multi-stage yield, meanwhile, the energy consumption system is fixed to the upper wing plate and the lower wing plate through bolts, and the energy consumption system is fixed to the upper wing plate and the lower wing plate through bolts. The anti-seismic energy dissipation steel sheet is simple in structure, convenient to machine, high in economic benefit and high in anti-seismic capacity, bridge collapse can be more effectively avoided when an earthquake occurs, and the anti-seismic aim of a building is achieved.

The utility model provides a fixing device suitable for a bridge collapse chain type monitoring unit. The fixing device comprises a fixing base and a cover plate. The fixing base is in a three-layer step shape, a base groove is formed in the central symmetry axis, perpendicular to the extending direction of the step, of the first layer of the step, first round holes are symmetrically formed in the two sides of the base groove, the kicking faces of the first layer and the second layer of the step are first arc-shaped grooves, and the tops of the first arc-shaped grooves extend towards the first round holes by a certain distance. Two first rectangular clamping grooves are formed in the second layer of the step and symmetrically formed in the two sides of the extension line of the central symmetry axis of the base groove of the base, and two second round holes are formed in the third layer of the step and symmetrically formed in the two sides of the extension line of the central symmetry axis of the base groove of the base; the cover plate is in a two-layer reverse step shape corresponding to the first step layer and the second step layer of the fixed base and is provided with a sliding groove corresponding to the base groove of the base, a second rectangular clamping groove corresponding to the first rectangular clamping groove and a second arc-shaped groove corresponding to the first arc-shaped groove.

The utility model provides a road and bridge collapse automatic alarm system, comprising a first mounting plate arranged on a first pavement slab body; a mounting column is arranged on the first mounting plate; the second mounting plate is arranged on the second pavement slab body; a rotating column and an alarm body are adjacently arranged on the second mounting plate; the alarm rod is rotatably arranged on the rotating column; one end of the alarm rod sleeves the mounting column, and the other end of the alarm rod is arranged below the alarm body; a limiting block and an adjusting block are arranged on the mounting column, an action space is formed between the limiting block and the adjusting block, and one end of the alarm rod sleeves the action space; the alarm device is arranged on a fence of the road and bridge and is connected with the alarm body; the road and bridge collapse automatic alarm system provided by the utility model is in a detection state before the road and bridge collapse, and at the moment, excessive energy consumption is not needed; and when collapse occurs, the collapse condition can be detected in time, and an alarm is given, so that accidents are avoided.

The invention discloses a bridge collapse accident flexible water curtain blocking system based on Beidou automatic monitoring, which comprises an intelligent control terminal, a base, a water curtain device mounted on the base, a high-brightness laser projection device, a tweeter and a detection device, the water curtain device, the high-brightness laser projection device, the tweeter and the detection device are connected with the intelligent control terminal, and the intelligent control terminal receives accident warning information sent by the bridge monitoring and early warning system based on Beidou automatic monitoring and controls the water curtain device to form a water curtain barrier at a bridge entrance. The high-brightness laser projection device projects high-brightness laser displaying accident warning information on the water curtain barrier, meanwhile, the tweeter gives out alarm sound to prevent vehicles from entering the bridge, and the detection device collects bridge running state information and vehicle information in the bridge and uploads the information in real time. According to the invention, the barrier-free flexible blocking effect which is clear and visible from a long distance in all weathers in daytime or sunny days is realized, and the effect of effectively blocking vehicles at the bridge entrance is realized.

The invention relates to a construction method for newly building an arch bridge in situ of an old bridge. The construction method comprises the steps that arch foot foundations are newly built at the two ends of a main beam of the old bridge, and steel pipe arch construction is conducted on the arch foot foundations; a plurality of slings are installed on the steel pipe arch, supporting ropes are installed at the bottom of the old bridge girder section by section, and each supporting rope section is connected with the corresponding sling; the old bridge girder is cut and dismantled segment by segment with the old bridge pier as the center, and the old bridge girder is transported to the set position segment by segment; and a new bridge girder is erected, and the new bridge girder is connected with the steel pipe arch through the slings to form the newly-built arch bridge. A sling on a new bridge steel pipe arch is used for lifting an old bridge girder, and the old bridge girder is symmetrically cut and dismantled section by section with an old bridge pier as the center, so that the risk that an old bridge collapses due to unbalanced stress in the dismantling process is reduced, normal navigation in the dismantling and building construction process is guaranteed, and the construction efficiency is improved. The technical problems that in the prior art, the construction period for dismantling and rebuilding a conventional old bridge is long, the old bridge is prone to collapse in the dismantling process, and navigation is interrupted are solved.

The utility model discloses a road and bridge collapse early warning structure and system, and relates to the technical field of geological disaster early warning. The early warning structure comprises a follow-up part and a touch part, one end of the follow-up part is fixedly provided with a fastener, and the touch part is also fixedly provided with a fastener; the touch part comprises a trigger mechanism, a signal transmission device and a box body; the early warning system comprises a plurality of the road and bridge collapse early warning structures and further comprises a road surface, a plurality of grooves are formed in the road surface, and the early warning structures are arranged in the grooves. According to the utility model, the plurality of fixed bodies are connected through the plurality of connecting bodies, so that the length or the length of the follow-up part formed by the plurality of fixed bodies and the plurality of connecting bodies can be adjusted, and the follow-up part can be suitable for wide or narrow roads; the follow-up part is laid in the groove formed in the surface of the road, and compared with an early warning structure pre-buried in a roadbed, the road early warning device can be used for a built road and can also be applied to a bridge for early warning and monitoring.

The invention relates to a bridge catastrophe identification method based on an image mode. The method comprises the following steps: acquiring a bridge target image and a bridge floor information image in real time; performing target point identification on the bridge target image, and calculating deviation of each target point along the bridge direction at different moments; recognizing the bridge floor information image through a prediction model obtained through pre-training to judge whether the appearance contour state of the bridge is abnormal or not; and judging whether to give an alarm or not according to the deviation and the bridge appearance contour state. According to the bridge catastrophe recognition method based on the image mode, the bridge target image and the bridge floor information image are collected in real time, whether major catastrophe such as bridge collapse occurs or not is accurately judged by judging the deviation amount and the bridge appearance contour state, alarm pushing is carried out in real time, and after the major catastrophe such as the bridge collapse accident occurs, the bridge target image and the bridge floor information image are recognized. And a secondary accident is caused.

The invention relates to the related technical field of induction indicating devices, and discloses an induction indicating device for emergency response to bridge collapse. A vertical mounting frame is fixedly mounted on the mounting base, an induction indicating device is fixedly mounted on the outer side of the vertical mounting frame, a character display frame and a light display device frame are mounted on the outer side of the induction indicating device, and the light display device frame is arranged below the character display frame. The two sides of the light display device frame and the character display frame are symmetrically provided with induction warning horns used for synchronously playing warnings, and the two induction warning horns are arranged in the vertical direction. According to the invention, light can be refracted into the eyes of a driver, the light can be changed through dynamic light angle adjustment, and the change more easily attracts the attention of the driver. Compared with light with a fixed angle, the adjustable light can actively attract the sight of a driver to the indicating device and remind the driver to pay attention to important information.

The present application belongs to the field of automobile active safety and intelligent transportation technology, and relates to a night road and bridge collapse early warning method and system based on visual perception. The method comprises the following steps: step one, establishing a normal disappearance rule benchmark model of a preceding vehicle tail light and a normal optical characteristic model of a roadside vertical sign; step two, performing preliminary calculation of a collapse confidence, giving a first collapse confidence A1, and simultaneously analyzing the roadside vertical sign, if the optical characteristics of the vertical sign detected do not conform to the normal optical characteristic model rule, then giving a second collapse confidence A2; step three, comparing the bridge collapse comprehensive confidence A with a preset threshold value to determine whether to issue a warning. The present application can quickly detect bridge collapse hazards at night, provide instant warning for vehicles in motion, and avoid the delay and non-real-time problems of traditional fixed sensors or manual inspection.

The invention provides a protective device for a railway and highway accident alarm signal transceiver, which relates to the technical field of traffic safety protection, and is characterized by comprising an on-board signal receiver, a ground signal generator, a parking system device, a portable signal receiver and a portable signal generator, the ground signal generator is installed on a railway or a road when a bridge collapses or is close to the road surface, the parking system device is installed on an automobile or a train, and the portable signal receiver and the portable signal generator are carried by maintenance personnel. The device has the advantages that when roadbed collapse is caused by landslide and rockfall of upper and lower slopes of railways and highways, the vehicle is alarmed and stopped, the accident that the vehicle falls into the bridge is prevented in time, and personal casualties are avoided.