多车桥梁动态称重算法

doi:10.13229/j.cnki.jdxbgxb20200018

Abstract

Abstract:

At present， the research on commercial bridge weigh-in-motion （BWIM） system was mainly focused on the one-dimensional BWIM system. Most of them only consider the situation of a single vehicle crossing the bridge， and the phenomenon of multiple vehicles crossing the bridge in actual traffic was common. Aiming at this situation， a multi-vehicle dynamic weighing algorithm was proposed. Based on the Moses axle weight recognition algorithm， based on the transverse bridge's dynamic response line and bridge bending moment influence surface， the vehicle information such as the lateral position and axle weight of the single and multiple vehicles crossing the bridge were identified， and the finite element was finally weighed by the bridge dynamics Simulation analysis is performed to study the reliability of the algorithm under different working conditions such as single vehicle crossing the bridge， two vehicles crossing the bridge and three vehicles crossing the bridge. The results shows that： under the conditions of single vehicle crossing the bridge， two vehicles crossing the bridge， and three vehicles crossing the bridge， with the increase of the number of vehicles， the recognition accuracy slightly decreases， the maximum error of the total vehicle weight recognition is about 13%， and the lateral position recognition The error is about 9%， and the recognition accuracy meets the actual needs of the project. The algorithm can identify the lateral position and axle weight of the vehicle when multiple vehicles cross the bridge， and has the potential to develop into a commercial BWIM system.

Key words: bridge engineering, bridge weigh-in-motion, dynamic response line, Moses algorithm

CLC Number:

U446.2

Ya-feng GONG,Jia-xiang SONG,Guo-jin TAN,Hai-peng BI,Yang LIU,Cheng-xin SHAN. Multi⁃vehicle bridge weigh⁃in⁃motion algorithm[J].Journal of Jilin University(Engineering and Technology Edition), 2021, 51(2): 583-596.

Figures/Tables 18

Fig.1

Fig.2

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Table 1

Calibration car parameter list"

参数	数值	参数	数值
$p s 1, p s 2$ /(N·m^-1)	$2.135 × 106$	$p s 3, p s 4$ /(N·m^-1)	$1.215 × 106$
$n s 1, n s 2$ /(N·s·m^-1)	$1.35 × 104$	$n s 3, n s 4$ /(N·s·m^-1)	$1.98 × 104$
$p t 1, p t 2$ /(N·m^-1)	$1.78 × 106$	$p t 3, p t 4$ /(N·m^-1)	$2.29 × 106$
$n t 1, n t 2$ /(N·s·m^-1)	$2.01 × 103$	$n t 3, n t 4$ /(N·s·m^-1)	$2.03 × 103$
$m t 1, m t 2$ /kg	$750$	$m t 3, m t 4$ /kg	$500$
$I v$ /（kg·m²）	$1.38 × 105$	$I r$ /（kg·m²）	$1.52 × 104$
$r 1$ /m	$2$	$r 2$ /m	$2$
$r 3$ /m	$0.95$	$m v$ /kg	$12 ? 500$

Table 1

Table 2

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Fig.5

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Table 3

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Fig.9

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Fig.15

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路面等级	路面不平整度系数/10^-6m³
路面等级	下限	上限	几何平均
A	—	32	16
B	32	128	64
C	128	512	256
D	512	2 048	1 024
E	2 048	8 192	4 096
F	8 192	32 768	16 384
G	32 768	131 072	65 536
H	131 072	—	262 144

车辆编号	类型	轴距/m	前轴/t	后轴/t	总重/t
1	两轴车	4.27	5.8	6.7	12.5
2	两轴车	4.27	7.0	8.0	15.0
3	两轴车	4.27	8.3	9.5	17.8
4	两轴车	4.27	9.4	10.6	20.0
5	两轴车	4.27	4.8	5.7	10.5
6	两轴车	4.27	10.8	12.2	23.0

Multi⁃vehicle bridge weigh⁃in⁃motion algorithm

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