Method for recognizing load of single vehicle passing through multi-girder type bridge

An identification method and vehicle load technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of high WIM installation cost and maintenance cost, hardware damage of the WIM system, and vehicle load identification errors, etc. The process is simple and easy to implement, the monitoring simulation data is accurate, and the effect of ensuring the recognition accuracy

Inactive Publication Date: 2015-06-24
CHANGAN UNIV
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Problems solved by technology

[0003] At present, a more accurate method for identifying vehicle loads is to use a dynamic weighing system (weigh-in-motion, WIM). WIM can identify the axle load and wheelbase of vehicles without affecting normal traffic. However, in actual use, WIM The hardware of the system is very prone to damage, which leads to errors in the identifica

Method used

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  • Method for recognizing load of single vehicle passing through multi-girder type bridge
  • Method for recognizing load of single vehicle passing through multi-girder type bridge
  • Method for recognizing load of single vehicle passing through multi-girder type bridge

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Embodiment 1

[0034] A vehicle load identification method for a single vehicle passing through a multi-beam bridge, the specific steps are as follows:

[0035] 1). Carry out traffic load investigation, and use cameras to record the types of vehicles passing through the road sections in the surveyed area. Vehicles can be divided into 5 categories and 12 subcategories according to vehicle models. Combine the vehicle models of the collected data with the vehicle weight, The number of axles, wheelbase, and axle load parameters are used to classify traffic loads in the area and summarize them;

[0036] 2). Place a dynamic deflection meter at the bottom of each girder span of the identified bridge, use the device to collect the dynamic response information of the bridge mid-span when the vehicle passes the bridge, obtain the dynamic deflection curve, and then use the wavelet transform noise reduction method to remove the factors in the curve The dynamic response information caused by the impact a...

Embodiment 2

[0043] 1. Acquisition and analysis of measured traffic load information:

[0044] In the area where the vehicle load identification is to be carried out, the traffic survey is first carried out, that is, the actual traffic load information collection and analysis are carried out. Use the camera to record the vehicle type and the lateral position of different models by investigating the type of vehicle and the lateral position of the vehicle. By consulting the relevant model manuals and national automobile standards, the parameters such as axle load and wheelbase of various models are obtained, and then according to the traffic data measured in the area to be identified, representative models are selected to classify and summarize the vehicle loads in the area to be identified to obtain the vehicle type classification The table is shown in Table 1:

[0045] Table 1 Model Classification Table

[0046]

[0047]

[0048] 2. Vehicle lateral position recognition analysis:

...

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Abstract

The invention belongs to the technical field of buildings and traffic bridges, and particularly relates to a method for recognizing the load of a single vehicle passing through a multi-girder type bridge. According to the method, the weight of the vehicle is back calculated through response of the bridge when the vehicle passes through the bridge; the axle weights of all shafts of a large car are obtained according to an axle load distribution ratio after the weight of the vehicle is obtained; goodness fit is conducted on the total weight of a small car and the axle weight of the large car, and the distribution and the parameters obeyed by the vehicle weight and the axle weights are obtained; the distribution of the axle weights of all axles of the large car is obtained, and a vehicle model better meeting the reality is set up; the response of the bridge is obtained under the effect of the vehicle load, the Monte Carlo method or other methods can be used for generating a random traffic flow meeting the local reality, generated random vehicles are analyzed, the safety condition of the bridge under the normal traffic operation condition is evaluated, and a basis is provided for long-term safety evaluation of the bridge.

Description

technical field [0001] The invention belongs to the technical field of construction and traffic bridges, and in particular relates to a vehicle load identification method for a single vehicle passing through a multi-girder bridge. Background technique [0002] Vehicle load identification has always been the focus of research and discussion by experts and scholars in the field of bridge engineering. Vehicle load is an important content of traffic surveys. Only when more realistic traffic survey data are obtained can better local traffic data be obtained. And then provide better data support for bridge safety evaluation and performance evaluation in various regions. [0003] At present, a more accurate method for identifying vehicle loads is to use a dynamic weighing system (weigh-in-motion, WIM). WIM can identify the axle load and wheelbase of vehicles without affecting normal traffic. However, in actual use, WIM The hardware of the system is very prone to damage, which lead...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 韩万水李彦伟武隽王涛赵士良肖强
Owner CHANGAN UNIV
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