CN111540216A - Urban bridge overload early warning system and method - Google Patents

Urban bridge overload early warning system and method Download PDF

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Publication number
CN111540216A
CN111540216A CN202010447276.XA CN202010447276A CN111540216A CN 111540216 A CN111540216 A CN 111540216A CN 202010447276 A CN202010447276 A CN 202010447276A CN 111540216 A CN111540216 A CN 111540216A
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bridge
vehicle
overload
information
early warning
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CN111540216B (en
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王淮峰
林立
侯海涛
夏丹丹
林晓波
胡海涛
胡磊
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Xiamen University of Technology
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Xiamen University of Technology
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
    • G01G19/03—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion
    • G01G19/035—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion using electrical weight-sensitive devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights

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  • Traffic Control Systems (AREA)

Abstract

The invention discloses an urban bridge overload early warning system and method, which relate to the technical field of traffic early warning coordination and comprise a weighing module group, a data processing and control module, an upper bridge snapshot module group and a lower bridge snapshot module group; the weighing module group and the upper bridge snapshot module group are both arranged at the upper bridge positions at the two ends of the bridge; the weighing module group is used for measuring the vehicle weight information of the vehicles on the bridge; the upper bridge snapshot module group is used for snapshotting upper bridge vehicle information of vehicles on the upper bridge in advance; the lower bridge snapshot module group is used for snapshotting lower bridge vehicle information of lower bridge vehicles and sending the lower bridge vehicle information to the data processing and control module; the data processing and control module is respectively connected with the weighing module group, the lower bridge snapshot module group and the upper bridge snapshot module group; the data processing and control module is used for judging whether the bridge is overloaded according to the vehicle weight information, the upper bridge vehicle information and the lower bridge vehicle information, and outputting a bridge overload early warning instruction when the bridge is overloaded. The invention realizes the bridge overload early warning by measuring the live load of the bridge in real time.

Description

Urban bridge overload early warning system and method
Technical Field
The invention relates to the technical field of traffic early warning coordination, in particular to an urban bridge overload early warning system and method.
Background
With the continuous development of economy in China, the traffic network is increasingly busy. Some vehicles are compelling to gain economic benefit and have serious overload situations. In addition, the local bridge surface may have a sudden load increase in a short period due to traffic jam and the like. Once the damage and even collapse accident of the bridge occurs, the highway and the urban expressway which are composed of a large number of bridges can cause huge casualties and economic losses, and lead to extremely bad social influence.
Overload is defined in terms of a vehicle, i.e., the actual load of the vehicle is greater than the nominal design load of the vehicle. In the transportation process of an overloaded transportation tool, the control capability is reduced, and traffic accidents are easy to happen.
Overload is defined from the aspect of roads and bridges, namely the weight of vehicles passing through the roads and the bridges exceeds the designed live load of the roads and the bridges. Under the condition that the live load of the automobile exceeds the design load, the bridge is easy to have structural damage and even cause serious accidents of local or overall collapse of the bridge, and casualties and economic losses in accident areas and the periphery are caused. If two trucks on a 312 national road tin-free road section are overloaded 6 a 10 th day and a 10 th night in 2019, the overload amounts reach 394% and 455% respectively, bridge collapse is caused, and serious traffic accidents of 3 deaths and 2 injuries are caused.
Disclosure of Invention
The invention aims to provide an urban bridge overload early warning system and method, which can realize bridge overload early warning by measuring live load of a bridge in real time.
In order to achieve the purpose, the invention provides the following scheme:
an urban bridge overload early warning system comprises a weighing module group, a data processing and control module, an upper bridge snapshot module group and a lower bridge snapshot module group;
the weighing module group and the upper bridge snapshot module group are both arranged at the upper bridge positions at two ends of the bridge; the weighing module group is used for measuring the vehicle weight information of the vehicles on the bridge; the upper bridge snapshot module group is used for snapshotting upper bridge vehicle information of vehicles which are going to go to the upper bridge, and the upper bridge vehicle information comprises a license plate, a speed per hour and a vehicle type;
the lower bridge snapshot module group is arranged at the lower bridge at two ends of the bridge; the lower bridge snapshot module group is connected with the data processing and control module; the lower bridge snapshot module group is used for snapshotting lower bridge vehicle information of lower bridge vehicles and sending the lower bridge vehicle information to the data processing and control module;
the data processing and control module is also respectively connected with the weighing module group and the upper bridge snapshot module group; the data processing and control module is used for judging whether the bridge is overloaded according to the vehicle weight information of the vehicles on the bridge in advance, the vehicle information on the bridge and the vehicle information on the vehicle on the bridge, and outputting a bridge overload early warning instruction when the bridge is overloaded.
Optionally, the system further comprises an overload early warning module; the overload early warning module comprises a traffic light group; the traffic light group is connected with the data processing and control module; the traffic light set is used for receiving the bridge overload early warning instruction output by the data processing and control module and controlling the red light of the traffic light set to work according to the bridge overload early warning instruction.
Optionally, the overload early warning module further includes an overload information prompting unit, and the overload information prompting unit is connected to the data processing and controlling module; the overload information prompting unit is used for receiving the bridge overload early warning instruction output by the data processing and controlling module and sending out overload prompting information according to the bridge overload early warning instruction.
Optionally, the traffic light group includes bridge traffic lights and road traffic lights; the bridge traffic light is arranged at the upper bridge positions at two ends of the bridge, and the road traffic light is arranged at a road entrance below the bridge.
Optionally, the system further comprises an overload parking detection module group, wherein the overload parking detection module group is connected with the data processing and control module; and the overload parking detection module group is used for detecting whether an overload vehicle is parked in a parking area according to the bridge overload early warning instruction and the vehicle weight information.
Optionally, the system further comprises an overload alarm module, wherein the overload alarm module is connected with the data processing and control module; the overload warning module is used for receiving the bridge overload warning instruction output by the data processing and controlling module, sending warning information according to the bridge overload warning instruction and then transmitting the warning information to a traffic command center.
An urban bridge overload early warning method is applied to any one of the above urban bridge overload early warning systems, and specifically comprises the following steps:
acquiring vehicle weight information of vehicles on the upper bridge measured by the weighing module group, vehicle information on the upper bridge captured by the vehicle capturing module group on the upper bridge, and vehicle information on the lower bridge captured by the vehicle capturing module group on the lower bridge;
judging whether the vehicle weight of the pre-on-axle vehicle exceeds the rated single-point load of the bridge or not according to the vehicle weight information of the pre-on-axle vehicle to obtain a first judgment result;
if the first judgment result shows that the vehicle weight of the pre-on-bridge vehicle does not exceed the rated single-point load of the bridge, judging whether the current total load of the bridge exceeds the rated total load of the bridge or not according to the vehicle weight information of the pre-on-bridge vehicle, the information of the on-bridge vehicle and the information of the off-bridge vehicle to obtain a second judgment result;
and if the second judgment result shows that the current total load of the bridge exceeds the rated total load of the bridge, outputting a bridge overload early warning instruction.
Optionally, the method for warning overload of an urban bridge further includes outputting a bridge overload warning instruction if the first determination result indicates that the vehicle weight of the pre-on-bridge vehicle exceeds the rated single-point load of the bridge.
Optionally, if the first determination result indicates that the vehicle weight of the pre-on-bridge vehicle exceeds the rated single-point load of the bridge, outputting a bridge overload warning instruction, specifically including:
if the first judgment result shows that the vehicle weight of the pre-bridge vehicle exceeds the rated single-point load of the bridge, a bridge overload early warning instruction is output, and the bridge overload early warning instruction is sent to a traffic light set to control the red light of the traffic light set to work;
judging whether the overloaded vehicle stops in an upper bridge parking area or not to obtain a third judgment result;
if the third judgment result shows that the overloaded vehicle stops in the upper bridge parking area, outputting a bridge overload early warning removing instruction, and sending the bridge overload early warning removing instruction to the traffic light set to control the green light of the traffic light set to work;
if the third judgment result shows that the overloaded vehicle does not stop in the upper bridge parking area, continuing to send the bridge overload early warning instruction to the traffic light set to control the red light of the traffic light set to work, and acquiring the lower bridge vehicle information of the lower bridge vehicle captured by the lower bridge capture module set;
judging whether the overloaded vehicle gets off the bridge or not according to the information of the off-bridge vehicles to obtain a fourth judgment result;
if the fourth judgment result shows that the overloaded vehicle is off-bridge, outputting a bridge overload early warning removing instruction, sending the bridge overload early warning removing instruction to the traffic light set to control the green light of the traffic light set to work, and then judging whether the overloaded vehicle is parked in an off-bridge parking area or not to obtain a fifth judgment result;
if the fourth judgment result shows that the overloaded vehicle does not get off the bridge, continuing to send the bridge overload early warning instruction to the traffic light set to control the red light of the traffic light set to work, and returning to the step of judging whether the overloaded vehicle gets off the bridge according to the information of the off-bridge vehicle to obtain a fourth judgment result;
and if the fifth judgment result shows that the overloaded vehicle does not stop in the lower bridge parking area, sending alarm information according to the bridge overload early warning instruction, and then transmitting the alarm information to a traffic command center.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides an urban bridge overload early warning system and method. The data processing and control module can judge whether the bridge has an overload problem through the detection information of the weighing module group, the upper bridge snapshot module group and the lower bridge snapshot module group. The real-time live load condition of the bridge is obtained through load monitoring of the single vehicle and the group of vehicles, so that overload early warning of the bridge is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic diagram of an urban bridge overload warning system according to an embodiment of the present invention;
FIG. 2 is a flowchart of an urban bridge overload warning method according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a control flow of an urban bridge overload warning system according to a third embodiment of the present invention;
fig. 4 is a schematic diagram of a single vehicle overload warning system of a third city bridge overload warning system in an embodiment of the invention.
Description of the symbols:
the system comprises a first snapshot module, a second snapshot module, a third snapshot module, a fourth snapshot module, a first weighing module, a second weighing module, a first bridge traffic light, a second bridge traffic light, a first road traffic light, a second road traffic light, a first traffic information display screen, a second traffic information display screen, a third traffic information display screen, a fourth traffic information display screen, a first weighing module, a second weighing module, a first bridge traffic light, a second bridge traffic light, a first road traffic light, a second road traffic light, a first traffic information display screen, a second traffic information display screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an urban bridge overload early warning system and method, which can realize bridge overload early warning by measuring live load of a bridge in real time.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1, the present invention provides an urban bridge overload warning system, which includes a weighing module group, a data processing and controlling module, an upper bridge snapshot module group, and a lower bridge snapshot module group.
The weighing module group and the upper bridge snapshot module group are both arranged at the upper bridge positions at two ends of the bridge; the weighing module group is used for measuring the vehicle weight information of the vehicles on the bridge; the bridge-climbing snapshot module group is used for snapshotting bridge-climbing vehicle information of a vehicle climbing a bridge in advance, and the bridge-climbing vehicle information comprises a license plate, a speed per hour and a vehicle type.
The lower bridge snapshot module group is arranged at the lower bridge at two ends of the bridge; the lower bridge snapshot module group is connected with the data processing and control module; the lower bridge snapshot module group is used for snapshotting lower bridge vehicle information of lower bridge vehicles and sending the lower bridge vehicle information to the data processing and control module.
The data processing and control module is also respectively connected with the weighing module group and the upper bridge snapshot module group; the data processing and control module is used for judging whether the bridge is overloaded according to the vehicle weight information of the vehicles on the bridge in advance, the vehicle information on the bridge and the vehicle information on the vehicle on the bridge, and outputting a bridge overload early warning instruction when the bridge is overloaded.
Preferably, the urban bridge overload early warning system further comprises an overload early warning module; the overload early warning module comprises a traffic light group; the traffic light group is connected with the data processing and control module; the traffic light set is used for receiving the bridge overload early warning instruction output by the data processing and control module and controlling the red light of the traffic light set to work according to the bridge overload early warning instruction. The traffic light group comprises bridge traffic lights and road traffic lights; the bridge traffic light is arranged at the upper bridge positions at two ends of the bridge, and the road traffic light is arranged at a road entrance below the bridge.
Preferably, the overload early warning module further comprises an overload information prompting unit, and the overload information prompting unit is connected with the data processing and controlling module; the overload information prompting unit is used for receiving the bridge overload early warning instruction output by the data processing and controlling module and sending out overload prompting information according to the bridge overload early warning instruction. The overload information prompting unit is arranged at the upper bridge position at two ends of the bridge and the bridge entrance position at two ends of the bridge entrance. The overload information prompting unit comprises a traffic information display screen and a voice prompter, and the traffic information display screen and the voice prompter are used for reminding a driver whether the driver can pass according to an instruction output by the data processing and control module.
Preferably, the urban bridge overload early warning system further comprises an overload parking detection module group, and the overload parking detection module group is connected with the data processing and control module; and the overload parking detection module group is used for detecting whether an overload vehicle is parked in a parking area according to the bridge overload early warning instruction and the vehicle weight information. The two ends of the bridge are provided with overload parking areas, and each overload parking area comprises an upper bridge front overload parking area arranged at the upper bridge of the bridge and a lower bridge rear overload parking area arranged at the lower bridge of the bridge. The overload parking detection module comprises an upper bridge overload parking detection module and a lower bridge overload parking detection module, the upper bridge overload parking detection module is arranged in an overload parking area in front of an upper bridge, and the upper bridge overload parking detection module is used for detecting whether an overloaded vehicle is parked in the overload parking area in front of the upper bridge according to the bridge overload early warning instruction and the vehicle weight information. The lower bridge overload parking detection module is arranged in the lower bridge rear overload parking area and is used for detecting whether an overloaded vehicle is parked in the lower bridge rear overload parking area or not according to the bridge overload early warning instruction and the vehicle weight information.
Preferably, the urban bridge overload early warning system further comprises an overload warning module, and the overload warning module is connected with the data processing and control module; the overload warning module is used for receiving the bridge overload warning instruction output by the data processing and controlling module, sending warning information according to the bridge overload warning instruction and then transmitting the warning information to a traffic command center.
Example two
As shown in fig. 2, the present invention provides an urban bridge overload early warning method, which is applied to the urban bridge overload early warning system according to the first embodiment, and the urban bridge overload early warning method specifically includes:
step 101: and acquiring the vehicle weight information of the vehicles on the upper bridge measured by the weighing module group, the vehicle information of the vehicles on the upper bridge captured by the vehicle capturing module group on the upper bridge in advance and the vehicle information of the vehicles on the lower bridge captured by the vehicle capturing module group on the lower bridge.
Step 102: judging whether the vehicle weight of the pre-on-axle vehicle exceeds the rated single-point load of the bridge or not according to the vehicle weight information of the pre-on-axle vehicle to obtain a first judgment result; and if the first judgment result shows that the vehicle weight of the pre-bridge vehicle does not exceed the rated single-point load of the bridge, executing step 103.
Step 103: and judging whether the current total load of the bridge exceeds the rated total load of the bridge or not according to the vehicle weight information of the vehicles on the bridge in advance, the information of the vehicles on the bridge and the information of the vehicles on the lower bridge to obtain a second judgment result. And if the second judgment result shows that the current total load of the bridge exceeds the rated total load of the bridge, executing the step 104.
Step 104: and outputting a bridge overload early warning instruction.
And if the first judgment result shows that the vehicle weight of the vehicle on the bridge exceeds the rated single point load of the bridge, executing step 104.
If the first judgment result shows that the vehicle weight of the vehicle on the bridge in advance exceeds the rated single-point load of the bridge, a bridge overload early warning instruction is output, and the method specifically comprises the following steps:
and if the first judgment result shows that the weight of the vehicle on the bridge exceeds the rated single-point load of the bridge, executing the step 1051.
Step 1051: and outputting a bridge overload early warning instruction, and sending the bridge overload early warning instruction to a traffic light set to control the red light of the traffic light set to work.
Step 1052: judging whether an overloaded vehicle is parked in an upper bridge parking area or not according to the bridge overload early warning instruction and the vehicle weight information to obtain a third judgment result; if the third determination result indicates that the overloaded vehicle stops in the upper bridge parking area, step 1053 is performed. If the third determination result indicates that the overloaded vehicle does not stop in the upper-bridge parking area, step 1054 is performed.
Step 1053: and outputting a bridge overload early warning removing instruction, and sending the bridge overload early warning removing instruction to a traffic light set to control the green light of the traffic light set to work.
Step 1054: and continuously sending the bridge overload early warning instruction to a traffic light group to control the red light of the traffic light group to work, and acquiring the lower bridge vehicle information of the lower bridge vehicle captured by the lower bridge capture module group.
Step 1055: judging whether the overloaded vehicle gets off the bridge or not according to the information of the off-bridge vehicles to obtain a fourth judgment result; if the fourth determination result indicates that the overloaded vehicle has left the axle, step 1056 is performed. If the fourth determination result indicates that the overloaded vehicle is not off-axle, step 1057 is performed.
Step 1056: and outputting a bridge overload early warning removing instruction, and sending the bridge overload early warning removing instruction to a traffic light set to control the green light of the traffic light set to work.
Step 1057: and continuing to send the bridge overload warning instruction to the traffic light set to control the red light of the traffic light set to work, and returning to the step 1055.
Step 1058: judging whether the overloaded vehicle stops in a lower axle parking area or not to obtain a fifth judgment result; if the fifth determination result indicates that the overloaded vehicle stops in the lower-bridge parking area, step 1059 is performed. If the fifth determination result indicates that the overloaded vehicle does not stop in the lower-axle parking area, step 1060 is executed.
Step 1059: and outputting an instruction of the overloaded vehicle to stop in the lower axle parking area.
Step 1060: and sending alarm information according to the bridge overload early warning instruction, and then transmitting the alarm information to a traffic command center.
EXAMPLE III
The invention also provides a specific implementation mode of the urban bridge overload early warning system, which comprises the following steps: the system comprises a weighing module group, a data processing and control module, a snapshot module group, a traffic light group, a traffic information display screen, a voice prompter, an overload alarm module and overload parking areas arranged at two ends of a bridge. The high-definition snapshot module group, the weighing module group, the bridge traffic light and the traffic information display screen are arranged at the upper bridge positions at the two ends of the bridge in sequence. The high-definition snapshot module group comprises a first snapshot module 1, a second snapshot module 2, a third snapshot module 3 and a fourth snapshot module 4; the weighing module group comprises: a first weighing module 5 and a second weighing module 6; the bridge traffic light comprises a first bridge traffic light 7 and a second bridge traffic light 8; the traffic information display screen comprises a first traffic information display screen 11 and a second traffic information display screen 12; the third snapshot module 3 and the fourth snapshot module 4 are arranged at the lower bridge at two ends of the bridge. Road traffic lights and traffic information display screens are installed at the entrance of the road below the bridge, wherein the road traffic lights comprise first road traffic lights 9 and second road traffic lights 10, and the traffic information display screens comprise third traffic information display screens 13 and fourth traffic information display screens 14.
The two ends of the bridge are provided with overload parking areas which are divided into overload parking areas before the bridge, namely after the overload vehicles are weighed, if the overload vehicles are overloaded, drivers receive the overload parking information sent by the traffic information display screen and the voice prompter and actively park in the overload parking areas before the bridge. The overload parking area after getting off the bridge, namely after the overload vehicle is weighed, if overload, the driver receives the message of overload parking sent by the traffic information display screen and the voice prompter, but because of various uncontrollable factors after getting on the bridge and after safely getting off the bridge, the driver actively stops to the overload parking area after getting off the bridge.
The weighing module group is installed at the upper bridge position of vehicles at two ends of a bridge, the vehicles need to pass through the weighing module group before passing through the upper bridge, the weighing module group belongs to dynamic weighing, namely, the running vehicles can automatically acquire the weight of the vehicles through the wheel weights of the vehicles only through the weighing module group, the vehicles can be weighed without parking, and the smooth traffic is not influenced.
The high-definition snapshot module is a high-definition camera. The high-definition camera shoots vehicle information such as license plates, speed per hour and vehicle types and transmits the vehicle information to the data processing and control module. The first snapshot module 1 and the second snapshot module 2 record that the vehicle is on the bridge, and the third snapshot module 3 and the fourth snapshot module 4 record that the vehicle is off the bridge.
The contents displayed by the traffic information display screen and the traffic light set are divided into two parts, namely a bridge and a road below the bridge.
In the bridge part, when a bridge is overloaded, a first traffic information display screen 11 and a second traffic information display screen 12 at upper bridge positions at two ends of the bridge display that 'the current bridge is overloaded, please go to the bridge later', a bridge traffic light is on a red light, vehicles at two ends are forbidden to go on the bridge, when the overloaded vehicle passes through the bridge smoothly, the first traffic information display screen 11 and the second traffic information display screen 12 display that 'passing, a user is congratulated all the way', and the bridge traffic light is on a green light.
In the road part below the bridge, when the bridge is overloaded, the red light of the road traffic light below the bridge is on, the third traffic information display screen 13 and the fourth traffic information display screen 14 display that ' the bridge in front is overloaded at present and please pass later ', the vehicle to be overloaded smoothly passes through the bridge, the third traffic information display screen 13 and the fourth traffic information display screen 14 display that ' passing, and then the road traffic light is on green.
The data processing and controlling module records and processes vehicle data collected by the weighing module group and the high-definition snapshot module group, and whether the current load of the bridge exceeds the design rated load of the bridge or not is calculated through data processing. And after calculating whether the bridge is overloaded or not, outputting control signals to traffic light sets and traffic information display screens of roads at the upper bridge positions and the lower bridge positions at the two ends of the bridge, so as to carry out corresponding traffic order coordination.
And the data processing and control module records and stores all load data passing through the bridge, and the load data is used for maintenance and overhaul and structural health assessment of the bridge.
The data processing and control module calculates a formula whether the current load of the bridge exceeds the design rated total load of the bridge or not: gGeneral assembly＝Gs-Gx>？GForehead rest(ii) a Rated single point load Gd (G) for bridge designVehicle with wheels>？GForehead slip. Wherein G isVehicle with wheelsIt may be the weight of a single vehicle or the total weight of a plurality of vehicles per unit of road section, if GVehicle with wheelsWhen the total weight of a plurality of vehicles on a certain unit road section is GVehicle with wheelsRelated to the speed of travel of the vehicle, GVehicle with wheelsIs a function of the total length of the bridge, the driving speed, the length of a unit road section and the type of the vehicle.
Wherein G isGeneral assemblyIs the current total load of the bridge, GForehead slipDesigning a rated single point load for a bridge, i.e. the maximum load per unit length of the bridge, GForehead restAnd the load is rated total load, Gs is the total weight of the upper bridge vehicles at two ends of the bridge, Gx is the weight of the lower bridge vehicles, and Gd is the rated single-point load designed for the bridge.
The overload alarm module is used for starting alarm when the load of a single vehicle exceeds the rated single-point load of the bridge, contacting a traffic command center, feeding back vehicle information to track the overloaded vehicle, and avoiding continuous threat of dangerous vehicles to the front road and the bridge.
The overload rate is defined in two situations, including a single-point overload rate and a total overload rate. The single-point overload rate is divided into a single vehicle-mounted overload rate and a unit road section overload rate.
Single point overload rate: (actual load of single vehicle/live load capacity of rated unit section) 100%
Unit road section overload rate: (actual load capacity of single path section/live load capacity of design) 100%
The total overload rate is as follows: (actual total load/design live load capacity of bridge) 100%
The alarm module divides the early warning grade according to the overload rate and corresponds to different emergency measures. As shown in table 1:
TABLE 1 overload Rate-Warning grade comparison Table
Figure BDA0002506344340000101
Note: the accumulated overload times, the small inspection (small repair) times, the medium inspection (medium repair) times and the large inspection (large repair) times in the overload processing measures in the table can be adjusted according to the design of each bridge. Meanwhile, the frequency and scale of maintenance are adjusted according to data analysis such as traffic flow and historical load recorded by the bridge.
The control flow of the system in this embodiment is as follows:
as shown in fig. 3, when a vehicle gets on the bridge, the first snapshot module 1 and the second snapshot module 2 at two ends of the bridge take pictures of the vehicle, and record the information of the vehicle getting on the bridge, such as license plate, speed, height and the like of the vehicle getting on the bridge in advance; the first weighing module 5 and the second weighing module 6 weigh the weight of the vehicle; the third snapshot module 3 and the fourth snapshot module 4 record the lower axle vehicle information of the axle vehicle; and then the information of the upper bridge vehicles, the information of the vehicle weight and the information of the lower bridge vehicles are transmitted to a data processing and control module for judgment.
Firstly, judging the overload of a single vehicle weight, and then judging the total load of the bridge. So the bridge can be divided into three states: no overload, single overload and total overload.
No overload: if the single vehicle on the bridge is not overloaded and the total load is not overloaded, the data processing and control module outputs signals as follows: the traffic light sets are all green. The traffic is smooth above and below the bridge.
Overload of the bicycle: if the weight of a single vehicle of the vehicle is larger than the rated single point load of the bridge design, the data processing and control module outputs signals as shown in FIG. 4:
a) alarming, reporting that potential safety hazards exist when the bridge of the traffic command center is overloaded, and making emergency preparation; transmitting the information of the overloaded vehicle to an overloaded parking area; and after the overload parking area before the upper bridge receives the information of the overload vehicle, judging whether the overload vehicle stops in the parking area or not. If yes, the alarm is relieved, and the bridge is normally passed under the bridge; if not, the next step is carried out.
b) The bridge traffic light lights the red light, and vehicles about to get on the bridge are prevented from continuing to get on the bridge. On one hand, the load of the bridge is prevented from being continuously increased, and the damage risk of the bridge is increased; another aspect is to minimize possible accidents, involving more personnel, resulting in greater economic losses.
c) The red light is lighted by the road traffic light, so that the travelling crane on the road below the bridge is prevented from passing through the bridge opening, and the condition that the travelling crane below the bridge is influenced by the damage or collapse of the bridge structure, and casualties and economic loss are caused is avoided.
d) The first traffic information display screen 11 and the second traffic information display screen 12 display warning languages like overload and no-get-on, such as "overload at present and please get on the bridge later".
e) The third snapshot module 3 and the fourth snapshot module 4 at the two ends of the bridge monitor whether the overloaded vehicle passes through smoothly in real time, and after the overloaded vehicle passes through in a snapshot manner, the traffic light set (bridge traffic lights and road traffic lights) turns on green, and the traffic information display screen displays similar languages of 'traffic lights, traffic lights and a good-and-quiet' for congratulating you on the road.
When the overloaded vehicle is not snapped to pass, the step of c) d) is continued.
f) When the third snapshot module 3 or the fourth snapshot module 4 confirms that the overloaded vehicle gets off the bridge and the overloaded parking area after getting off the bridge confirms that the corresponding overloaded vehicle is parked in the overloaded parking area after getting off the bridge. And reporting that an overloaded vehicle exists in a certain bridge of the traffic command center, taking corresponding measures and releasing the alarm. If the overloaded vehicle stops in the overloaded parking area after entering the lower axle, the traffic command center processes the overloaded vehicle on the spot; if the overloaded vehicle does not stop in the overloaded parking area after entering the lower bridge, in order to avoid the overloaded vehicle from safely leaving and then entering other bridges, the hidden danger of overload is thoroughly eliminated, the overloaded vehicle needs to be tracked, and vehicle information is fed back to the traffic command center to continuously track the overloaded vehicle.
Overload of the total load: if the total weight of the vehicles on the bridge is greater than the total rated load of the bridge design, the data processing and control module outputs signals as follows:
A) and alarming, reporting that the bridge is overloaded and potential safety hazards exist in the traffic command center, and preparing for emergency.
B) The traffic light group lights a red light, and the traffic lights are forbidden to pass through the bridge above and below the bridge.
C) The first traffic information display screen 11 and the second traffic information display screen 12 display thereon a warning language like overload and no-get-on, which is "overload at the current bridge, please get on the bridge later".
D) The third snapshot module 3 and the fourth snapshot module 4 snapshot the vehicles passing through the bridge in real time, when the load on the bridge is smaller than the designed rated total load, the total load overload alarm is relieved, and the traffic light set lights up green lights.
The invention provides an urban bridge overload early warning system and method, which can evaluate the real-time live load condition of a bridge through load monitoring of a single vehicle and a group of vehicles, and coordinate traffic signals at a bridge end and under the bridge through the live load of the bridge, and a text and voice prompt system. And the overload alarm module is arranged and is in contact with the traffic command center at any time, so that the risk of bridge damage and even collapse caused by vehicle overload can be greatly reduced, and the safe traffic capacity of the traffic system is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (9)

1. An urban bridge overload early warning system is characterized by comprising a weighing module group, a data processing and control module, an upper bridge snapshot module group and a lower bridge snapshot module group;
the weighing module group and the upper bridge snapshot module group are both arranged at the upper bridge positions at two ends of the bridge; the weighing module group is used for measuring the vehicle weight information of the vehicles on the bridge; the upper bridge snapshot module group is used for snapshotting upper bridge vehicle information of vehicles which are going to go to the upper bridge, and the upper bridge vehicle information comprises a license plate, a speed per hour and a vehicle type;
the lower bridge snapshot module group is arranged at the lower bridge at two ends of the bridge; the lower bridge snapshot module group is connected with the data processing and control module; the lower bridge snapshot module group is used for snapshotting lower bridge vehicle information of lower bridge vehicles and sending the lower bridge vehicle information to the data processing and control module;
the data processing and control module is also respectively connected with the weighing module group and the upper bridge snapshot module group; the data processing and control module is used for judging whether the bridge is overloaded according to the vehicle weight information of the vehicles on the bridge in advance, the vehicle information on the bridge and the vehicle information on the vehicle on the bridge, and outputting a bridge overload early warning instruction when the bridge is overloaded.
2. The urban bridge overload warning system according to claim 1, further comprising an overload warning module; the overload early warning module comprises a traffic light group; the traffic light group is connected with the data processing and control module; the traffic light set is used for receiving the bridge overload early warning instruction output by the data processing and control module and controlling the red light of the traffic light set to work according to the bridge overload early warning instruction.
3. The urban bridge overload warning system according to claim 2, wherein the overload warning module further comprises an overload information prompting unit, and the overload information prompting unit is connected with the data processing and controlling module; the overload information prompting unit is used for receiving the bridge overload early warning instruction output by the data processing and controlling module and sending out overload prompting information according to the bridge overload early warning instruction.
4. The urban bridge overload warning system according to claim 2, wherein the traffic light set comprises bridge traffic lights and road traffic lights; the bridge traffic light is arranged at the upper bridge positions at two ends of the bridge, and the road traffic light is arranged at a road entrance below the bridge.
5. The urban bridge overload warning system according to claim 1, further comprising an overload parking detection module group, wherein the overload parking detection module group is connected with the data processing and control module; and the overload parking detection module group is used for detecting whether an overload vehicle is parked in a parking area according to the bridge overload early warning instruction and the vehicle weight information.
6. The urban bridge overload early warning system according to claim 1, further comprising an overload alarm module, wherein the overload alarm module is connected with the data processing and control module; the overload warning module is used for receiving the bridge overload warning instruction output by the data processing and controlling module, sending warning information according to the bridge overload warning instruction and then transmitting the warning information to a traffic command center.
7. An urban bridge overload early warning method, which is applied to the urban bridge overload early warning system according to any one of claims 1 to 6, and specifically comprises the following steps:
acquiring vehicle weight information of vehicles on the upper bridge measured by the weighing module group, vehicle information on the upper bridge captured by the vehicle capturing module group on the upper bridge, and vehicle information on the lower bridge captured by the vehicle capturing module group on the lower bridge;
judging whether the vehicle weight of the pre-on-axle vehicle exceeds the rated single-point load of the bridge or not according to the vehicle weight information of the pre-on-axle vehicle to obtain a first judgment result;
if the first judgment result shows that the vehicle weight of the pre-on-bridge vehicle does not exceed the rated single-point load of the bridge, judging whether the current total load of the bridge exceeds the rated total load of the bridge or not according to the vehicle weight information of the pre-on-bridge vehicle, the information of the on-bridge vehicle and the information of the off-bridge vehicle to obtain a second judgment result;
and if the second judgment result shows that the current total load of the bridge exceeds the rated total load of the bridge, outputting a bridge overload early warning instruction.
8. The method according to claim 7, further comprising outputting a bridge overload warning instruction if the first determination result indicates that the vehicle weight of the pre-bridged vehicle exceeds the rated single point load of the bridge.
9. The method according to claim 8, wherein if the first determination result indicates that the vehicle weight of the pre-bridge vehicle exceeds the rated single point load of the bridge, a bridge overload warning instruction is output, and the method specifically includes:
if the first judgment result shows that the vehicle weight of the pre-bridge vehicle exceeds the rated single-point load of the bridge, a bridge overload early warning instruction is output, and the bridge overload early warning instruction is sent to a traffic light set to control the red light of the traffic light set to work;
judging whether the overloaded vehicle stops in an upper bridge parking area or not to obtain a third judgment result;
if the third judgment result shows that the overloaded vehicle stops in the upper bridge parking area, outputting a bridge overload early warning removing instruction, and sending the bridge overload early warning removing instruction to the traffic light set to control the green light of the traffic light set to work;
if the third judgment result shows that the overloaded vehicle does not stop in the upper bridge parking area, continuing to send the bridge overload early warning instruction to the traffic light set to control the red light of the traffic light set to work, and acquiring the lower bridge vehicle information of the lower bridge vehicle captured by the lower bridge capture module set;
judging whether the overloaded vehicle gets off the bridge or not according to the information of the off-bridge vehicles to obtain a fourth judgment result;
if the fourth judgment result shows that the overloaded vehicle is off-bridge, outputting a bridge overload early warning removing instruction, sending the bridge overload early warning removing instruction to the traffic light set to control the green light of the traffic light set to work, and then judging whether the overloaded vehicle is parked in an off-bridge parking area or not to obtain a fifth judgment result;
if the fourth judgment result shows that the overloaded vehicle does not get off the bridge, continuing to send the bridge overload early warning instruction to the traffic light set to control the red light of the traffic light set to work, and returning to the step of judging whether the overloaded vehicle gets off the bridge according to the information of the off-bridge vehicle to obtain a fourth judgment result;
and if the fifth judgment result shows that the overloaded vehicle does not stop in the lower bridge parking area, sending alarm information according to the bridge overload early warning instruction, and then transmitting the alarm information to a traffic command center.
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