CN-119445784-B - Ultra-high vehicle collision bridge early warning system

CN119445784BCN 119445784 BCN119445784 BCN 119445784BCN-119445784-B

Abstract

The invention belongs to the technical field of bridge collision prevention, and particularly relates to an ultrahigh vehicle collision bridge early warning system which comprises a monitoring module, a data processing module and an early warning module, wherein the monitoring module and the early warning module are connected with the data processing module, the monitoring module comprises an under-bridge monitoring unit and an on-bridge vehicle monitoring device which are connected with the data processing module, the early warning module comprises an under-bridge ultrahigh vehicle early warning device and an on-bridge early warning device which are connected with the data processing module, the data processing module comprises a bridge deformation prediction model and a bridge collapse prediction model, the under-bridge clearance at the moment when the under-bridge pre-passing vehicle reaches the bridge position is predicted to meet the height of the under-bridge pre-passing vehicle through the bridge deformation prediction model, and the residual bearing capacity of the bridge after the pre-passing vehicle collides with the bridge is predicted through the bridge collapse prediction model. The invention greatly reduces the possibility of the vehicle striking the bridge.

Inventors

WANG SHICHAO
Zhou Shenquan
ZHANG GANG
LI CHENYANG
WU GUANTING

Assignees

长安大学

Dates

Publication Date: 20260512
Application Date: 20241115

Claims (7)

1. The ultra-high vehicle collision bridge early warning system is characterized by comprising a monitoring module (1), a data processing module (2) and an early warning module (3), wherein the monitoring module (1) and the early warning module (3) are connected with the data processing module (2); The monitoring module (1) comprises an under-bridge monitoring unit (12) and an on-bridge vehicle monitoring device (11) which are connected with the data processing module (2), and the early warning module (3) comprises an under-bridge ultrahigh vehicle early warning device (31) and an on-bridge early warning device (32) which are connected with the data processing module (2); the data processing module (2) comprises a bridge deformation prediction model (21) and a bridge collapse prediction model (22), the under-bridge monitoring unit (12) and the on-bridge vehicle monitoring device (11) upload collected current vehicle data to the data processing module (2), the under-bridge deformation prediction model (21) predicts whether the under-bridge clearance at the moment when the under-bridge pre-passing vehicle reaches the bridge position meets the height of the under-bridge pre-passing vehicle or not, if the height of the pre-passing vehicle is smaller than the under-bridge clearance at the moment, the under-bridge clearance at the moment meets the height of the pre-passing vehicle, the under-bridge vehicle early warning device (31) does not perform early warning, otherwise, the under-bridge clearance at the moment cannot meet the height of the pre-passing vehicle, the under-bridge ultra-high vehicle early warning device (31) performs early warning, meanwhile, the bridge collapse prediction model (22) calculates the residual bearing capacity of the bridge after the pre-passing vehicle impacts the bridge, and the possibility of collapse is obtained according to the residual bearing capacity, and meanwhile the on-bridge early warning device (32) performs early warning; The bridge deformation prediction model (21) is based on a finite element model, boundary conditions of a target bridge are added into the finite element model according to actual conditions, and the position of the vehicle on the bridge when the pre-passing vehicle passes through the lower part of the bridge is predicted according to the measured vehicle running speed on the bridge and the measured vehicle running speed under the bridge, wherein the prediction calculation process is as follows: Setting the moment when the underaxle pre-passing vehicle passes through the underaxle vehicle monitoring device (120) as The vehicle speed is The distance between the under-bridge vehicle monitoring device (120) and the bridge position is that The moment when the vehicle on the bridge passes through the vehicle monitoring device (11) on the bridge is The vehicle speed is The displacement predicted value of the vehicle on the bridge is The time difference between the on-bridge vehicle and the off-bridge vehicle reaching the corresponding monitoring devices is t: (1) (2) Calculating a predicted value of the displacement of the vehicle on the bridge, namely the position of the vehicle on the bridge, adding the vehicle as a load to the corresponding position of the bridge in the established bridge finite element model according to the predicted value of the displacement of the vehicle on the bridge, calculating bridge deformation data by solving the finite element model, subtracting the bridge deformation data from the current clearance under the bridge obtained by the laser ranging displacement sensor, obtaining the clearance under the bridge when the pre-passing vehicle under the bridge reaches the position of the bridge, and finally pre-judging whether the clearance under the bridge at the moment meets the height of the pre-passing vehicle under the bridge.
2. The ultra-high vehicle impact bridge warning system according to claim 1, further comprising a height-limiting frame (4), wherein the under-bridge monitoring unit (12) comprises an under-bridge vehicle monitoring device (120) respectively connected with the data processing module (2), a weighing sensor (121) arranged on an under-bridge road surface, and an under-bridge clearance monitor (122) arranged on the height-limiting frame (4).
3. The ultrahigh vehicle impact bridge warning system according to claim 2, wherein the under-bridge vehicle monitoring device (120) and the on-bridge vehicle monitoring device (11) are identical; the on-bridge vehicle monitoring device (11) comprises a door type bracket (11-2) and a laser radar measurer (11-1) arranged on the door type bracket (11-2), wherein the laser radar measurer (11-1) is connected with the data processing module (2); The laser radar measurer (11-1) of the under-bridge vehicle monitoring device (120) is used for detecting the height and the speed of a vehicle passing under a pre-entering bridge; the lidar measurer (11-1) of the on-bridge vehicle monitoring device (11) is used for detecting the speed of a vehicle running on a bridge deck.
4. The ultrahigh vehicle impact bridge warning system of claim 2, wherein the under-bridge clearance monitor (122) is a laser ranging displacement sensor for measuring under-bridge clearance.
5. The ultra-high vehicle impact bridge warning system according to claim 1, wherein the under-bridge ultra-high vehicle warning device (31) comprises a first supporting rod (31-3), and a first display screen (31-1) and a first warning lamp (31-2) which are connected with the data processing module (2) are arranged on the first supporting rod (31-3).
6. The ultra-high vehicle impact bridge warning system according to claim 1, wherein the on-bridge warning device (32) comprises a second support rod (32-1), and a second display screen (32-3), a second warning lamp (32-2) and a loudspeaker (32-4) which are connected with the data processing module (2) are arranged on the second support rod (32-1).
7. The ultrahigh vehicle impact bridge warning system according to claim 1, wherein the bridge collapse prediction model (22) comprises calculating the measured vehicle speed, vehicle weight, vehicle ultrahigh value, vehicle impact bridge position and bridge concrete strength parameters to obtain a predicted bridge residual bearing capacity, and comparing the predicted bridge residual bearing capacity with the load weight of the vehicle on the bridge to calculate the bridge collapse possibility.

Description

Ultra-high vehicle collision bridge early warning system Technical Field The invention belongs to the technical field of bridge collision avoidance, and particularly relates to an ultrahigh vehicle collision bridge early warning system. Background Due to factors such as the increase of the types and the heights of vehicles, the widening and renovation of urban roads, the illegal operation of drivers and the like, the underbridge design clearance of some old bridges cannot completely meet the requirement of underbridge traffic, and traffic accidents that some ultrahigh vehicles strike the upper structure of the bridge frequently occur, so that the beam body is damaged locally and even collapses, the normal road traffic is influenced, and the life and property of people are seriously threatened. Currently, in order to avoid the superelevation vehicle from striking the bridge superstructure, most of them are adopted to avoid the superelevation vehicle from striking the bridge superstructure by setting up a height-limiting frame. However, the method omits the dynamic change of the clearance under the bridge, which is generated along with the running of the vehicle on the bridge, the change of the height limiting frame and the change of the clearance under the bridge, which are caused by special conditions such as pavement subsidence, and the like, to a certain extent, and finally, the vehicle can not pass through the bridge, so that the accident that the ultrahigh vehicle impacts the upper structure of the bridge occurs. Moreover, if collision occurs, the current early warning system only can early warn vehicles and pedestrians under the bridge, and can not timely send collision early warning to the vehicles and pedestrians on the bridge. In view of the above, the present inventors provide an ultra-high vehicle collision bridge warning system to solve the above technical problems. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides an ultra-high vehicle collision bridge early warning system, wherein a bridge deformation prediction model and a bridge collapse prediction model are arranged on a data processing module, data measured by vehicles on a bridge and under the bridge are transmitted to the bridge deformation prediction model and the bridge collapse prediction model, so that the possibility of whether a pre-passing vehicle collides with the bridge or the bridge collapses is predicted, finally, the possible collision is early warned in advance through an ultra-high vehicle early warning device under the bridge and an early warning device on the bridge, people on the bridge are evacuated in advance, and the ultra-high vehicle under the bridge is prompted, so that the occurrence of large-scale casualties caused by the collision of the ultra-high vehicle is avoided. In order to achieve the above purpose, the present invention adopts the following technical scheme: The invention provides an ultra-high vehicle collision bridge early warning system which comprises a monitoring module, a data processing module and an early warning module, wherein the monitoring module and the early warning module are connected with the data processing module; The monitoring module comprises an under-bridge monitoring unit and an on-bridge vehicle monitoring device which are connected with the data processing module, and the early warning module comprises an under-bridge ultrahigh vehicle early warning device and an on-bridge early warning device which are connected with the data processing module; The data processing module comprises a bridge deformation prediction model and a bridge collapse prediction model, the bridge deformation prediction model predicts whether the under-bridge clearance at the moment when the under-bridge pre-passing vehicle reaches the bridge position meets the height of the under-bridge pre-passing vehicle or not, if the under-bridge clearance at the moment is smaller than the under-bridge clearance at the moment, the under-bridge clearance at the moment meets the height of the pre-passing vehicle, the under-bridge ultrahigh vehicle early warning unit does not perform early warning, otherwise, the under-bridge clearance at the moment cannot meet the height of the pre-passing vehicle, the under-bridge ultrahigh vehicle early warning unit performs early warning, and meanwhile, the bridge collapse prediction model calculates the residual bearing capacity of the bridge after the pre-passing vehicle impacts the bridge, obtains the possibility of bridge collapse according to the residual bearing capacity, and simultaneously, the on-bridge early warning device performs early warning. Further, the system further comprises a height limiting frame, and the under-bridge monitoring unit comprises an under-bridge vehicle monitoring device, a weighing sensor and an under-bridge clearance monitor, wherein the under-bridge vehicle monitoring device is respectively connected w