2024 Vol. 24, No. 6

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Cover and Contents of Vol.24, No.6, 2024
Cover Contents
Reviews
Review on key emergency resource deployment for expressway traffic accidents
JIN Yin-li, GAO Peng, TAN Er-long, LI Lin-wei, LIU Kun
Abstract: The key emergency resources for expressways were defined. In terms of the prevention, preparation, and response stages of emergency rescue for expressway traffic accidents, the key emergency resource deployment for expressways was divided into emergency facility location selection, allocation and di...
2024, 24(6): 1-25. doi: 10.19818/j.cnki.1671-1637.2024.06.001
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Review on mechanism and key technologies for delaying thermal crack propagation of high-speed train brake discs
LI Jie, WANG Li, WANG Xiao-yan, HU Zheng, WANG Xin, GAO Zi-yu, WANG Shi-min
Abstract: The fatigue thermal crack initiation and propagation mechanisms of train brake discs made of cast steel were analyzed. The effects of stress ratio, temperature, and overloading on the crack propagation rate of brake discs were described. Three key technologies for delaying crack propagation, includi...
2024, 24(6): 26-42. doi: 10.19818/j.cnki.1671-1637.2024.06.002
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Review on travel quality evaluation methods for urban bicycle traffic system
LI Cong-ying, ZHANG Hong-tao, LI Kun, ZHANG Da-peng, JIA Jin-xiu, ZHAO Song-yang, HE Yuan
Abstract: In order to investigate the influencing factors of travel quality for urban bicycle traffic system, a comprehensive review of the evaluation methods was carried out from the aspects of both road facilities and road networks. In the evaluation of road facilities, factors such as bicycle traffic flow,...
2024, 24(6): 43-65. doi: 10.19818/j.cnki.1671-1637.2024.06.003
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Research review on behavior strategies of electric vehicles considering charging demands
MA Jun-chi, ZHANG Yuan, DUAN Zong-tao, TANG Lei
Abstract: In order to improve the usability and operational efficiency of electric vehicles, the research progress of related work was described from three perspectives: charging behavior strategies (including charging station recommendation and charging path planning), behavior strategies for passenger servi...
2024, 24(6): 66-79. doi: 10.19818/j.cnki.1671-1637.2024.06.004
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Transportation infrastructure engineering
Seismic performance of large-diameter and variable cross-section pile group foundation in earthquake-induced subsidence sites
FENG Zhong-ju, XU Bo-xi, DONG Jian-song, ZHANG Cong, LIU Xu-zhao, LAI De-jin
Abstract: The model test on shaking table was used to select synthetic 5010 waves with different ground motion intensities. The effect of different ground motion intensities on the seismic performance of pile group foundation was studied. The differences in dynamic responses of horizontal displacement of pile...
2024, 24(6): 80-91. doi: 10.19818/j.cnki.1671-1637.2024.06.005
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Calculation method of instantaneous stiffness of steel reinforced ultra-high performance concrete beams with rectangular section
LIN Shang-shun, JI Bang-chong, LIU Jun-ping, LIN Jian-fan, ZHAO Jin-bing
Abstract: To study the instantaneous stiffness and calculation method of steel reinforced ultra-high performance concrete (SRUHPC) beams with rectangular section, five SRUHPC beam specimens and one reinforced ultra-high performance concrete (reinforced UHPC) beam specimen were fabricated. The reinforcement ra...
2024, 24(6): 92-105. doi: 10.19818/j.cnki.1671-1637.2024.06.006
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Stress concentration characteristics of concrete-filled steel tubular truss-rib K-joint with inner studs
LIU Jun-ping, YANG Qian, LIU Hua-long, YANG Yi-tu, CHEN Bao-chun
Abstract: To further study the influence of setting inner studs on the stress distribution of concrete-filled steel tubular truss-rib K-joints, a test on the stress concentration characteristics was conducted. The hot spot stress and stress concentration factor of joints without inner studs were compared and ...
2024, 24(6): 106-120. doi: 10.19818/j.cnki.1671-1637.2024.06.007
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Imaging method for damage inentification of plate structures detected by single mode Lamb waves
TIAN Liang, WANG Yu-ning, FAN Li-long, ZHAO Jian, SI Zhi-yuan
Abstract: The damage detection of steel plates with prefabricated rectangular through-cracks was carried out by using single mode Lamb waves. The excitation and receiving transducers were arranged in a sparse array on the damaged steel plates. A numerical model of Lamb waves propagation in the steel plate was...
2024, 24(6): 121-134. doi: 10.19818/j.cnki.1671-1637.2024.06.008
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Concrete bridge crack detection method based on improved YOLO v8s in complex backgrounds
JIANG Shi-xin, ZOU Xiao-xue, YANG Jian-xi, LI Hao, HUANG Xue-mei, LI Ren, ZHANG Ting-ping, LIU Xin-long, WANG Di
Abstract: To address the issue of low detection accuracy for cracks in concrete bridges caused by complex backgrounds, as well as small and obscure features, the crack location information was accurately located, and key parameters such as crack length and width were measured based on the improved YOLO v8s al...
2024, 24(6): 135-147. doi: 10.19818/j.cnki.1671-1637.2024.06.009
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Transportation vehicle engineering
Fault-tolerant control of four-wheel hub-drive electric vehicles based on MPC-MSCA
XUE Hong-tao, ZHANG Yu-le, SONG Zi-wei, FENG Han
Abstract: In response to the safety hazards posed by local in-wheel motor failures in four-wheel hub-drive electric vehicles, a fault-tolerant control method based on model predictive control-multi system collaborative allocation (MPC-MSCA) was proposed. The method was designed to address operating conditions...
2024, 24(6): 148-158. doi: 10.19818/j.cnki.1671-1637.2024.06.010
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Influence of frequency-dependent characteristics of double-layer nonlinear fastener system on wheel-rail dynamics characteristics
LI Xia, TANG Wei, DAI Jia-yu, SHENG Xiao-zhen, WANG An-bin
Abstract: To study the influence of frequency-dependent characteristics of double-layer nonlinear fastener system on wheel-rail dynamics characteristics, the dynamic stiffness of the fastener system within the frequency range of 100-1 000 Hz was obtained by hammering method. The finite element models of track...
2024, 24(6): 159-171. doi: 10.19818/j.cnki.1671-1637.2024.06.011
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Magnetic force calculation method of permanent magnet electromagnetic hybrid suspension system considering magnetic saturation
SHEN Lu, ZHANG Li-wei, XIU San-mu, ZHANG Meng-lei, LIU Tao
Abstract: To improve the accuracy and efficiency of magnetic force calculation of permanent magnet electromagnetic hybrid suspension system, the advantages of fast calculation speed of analytical method and high calculation accuracy of finite element method were comprehensively considered. Based on the equiva...
2024, 24(6): 172-182. doi: 10.19818/j.cnki.1671-1637.2024.06.012
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Transportation planning and management
Short-term traffic flow velocity prediction model based on multi-channel data fusion of meteorological and traffic
MA Fei, YANG Zhi-jie, WANG Jiang-bo, SUN Qi-peng, BAO Bo, GUO Qing-yuan, HUANG Kai
Abstract: In order to improve the prediction accuracy of short-term traffic flow under the influence of meteorological and traffic factors, a short-time traffic flow velocity prediction model based on Gramian angular field-convolutional neural network-long short-term memory (GAF-CNN-LSTM) was proposed by cons...
2024, 24(6): 183-196. doi: 10.19818/j.cnki.1671-1637.2024.06.013
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Joint optimization model of tram departure plan and multi-modal and multi-path traffic green waves
WANG Hao, XIE Ning
Abstract: Addressing the issue of low traffic efficiency of trams and incoordination between trams and motor vehicles, a joint optimization model of tram departure plan and multi-modal and multi-path traffic green waves was proposed. The relationship between the frequency of signal priority control activation...
2024, 24(6): 197-211. doi: 10.19818/j.cnki.1671-1637.2024.06.014
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Traffic information and control
Mixed platoon control method considering traffic oscillation mitigation
DONG Chang-yin, XIONG Zhuo-zhi, LI Ni, WANG Feng, ZHANG Jia-rui, WANG Hao
Abstract: An information interaction form between human-driven vehicle (HDV) and connected automated vehicle (CAV) in a mixed platoon was established, based on which a feedback feedforward controller was designed for CAVs. Besides, an optimization method targeting the control parameters of CAVs was proposed t...
2024, 24(6): 212-229. doi: 10.19818/j.cnki.1671-1637.2024.06.015
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System design of heterogeneous vehicle platoon based on multi-delay proportional-retarded controller
ZHU Xu, ZHANG Lin-hu, YAN Mao-de
Abstract: To effectively utilize delays to enhance system response speed and other control performances, a proportional-retarded (PR) controller was designed for the heterogeneous vehicle platoon by introducing multi-delays. The characteristic equations of each subsystem of the vehicle platoon were analyzed b...
2024, 24(6): 230-242. doi: 10.19818/j.cnki.1671-1637.2024.06.016
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Homogeneous platoon speed planning and following control in front vehicle cut-in and cut-out conditions
YANG Wei, SUN Xue, SI Yu, HAN Yi, CAI Yao
Abstract: To solve the problems that the front vehicle cut-in and cut-out may lead to a collision risk, as well as the low efficiency and poor stability of following control during constant speed cruise of the homogeneous platoon, a homogeneous platoon speed planning and following control model in front vehic...
2024, 24(6): 243-258. doi: 10.19818/j.cnki.1671-1637.2024.06.017
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Trajectory tracking control of intelligent vehicles based on deep reinforcement learning and rolling horizon optimization
XIE Xian-yi, ZHAO Xin, JIN Li-sheng, GUO Bai-cang, LI Ke-qiang
Abstract: To improve the generalization of trajectory tracking strategies for intelligent vehicles trained by deep reinforcement learning, a method of trajectory tracking control of intelligent vehicles based on rolling optimization and twin delayed deep deterministic policy gradient (ROTD3) was proposed to a...
2024, 24(6): 259-272. doi: 10.19818/j.cnki.1671-1637.2024.06.018
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Traffic safety and environment
Train-induced environmental vibration analysis of large-chassis and multi-tower metro depots
ZHAO Mi, LU Cheng-lin, CAO Sheng-tao, WANG Wei-ning, SHEN Jia-xu, DU Xiu-li
Abstract: To investigate the vibration response patterns at large-chassis and multiple-tower metro depots under the influence of train-induced vibration load, a refined numerical analysis model and efficient analysis techniques were employed. Based on the substructure method, the generation and propagation of...
2024, 24(6): 273-285. doi: 10.19818/j.cnki.1671-1637.2024.06.019
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Evaluation of eye-catching effect of highway tunnel entrance zones based on factor analysis and data envelopment analysis
HAN Lei, DU Zhi-gang, HE Shi-ming, MA Ao-jun
Abstract: To comprehensively evaluate the impact of visual attractions in highway tunnel entrance zones on drivers' eye-catching effect, 30 participants were recruited for a naturalistic driving experiment. Eye movement and electrocardiogram (ECG) data were collected under different visual attraction conditio...
2024, 24(6): 286-298. doi: 10.19818/j.cnki.1671-1637.2024.06.020
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Spatiotemporal characteristics and severity modelling of electric vehicle-pedestrian collision accidents
ZHUANG Yan, DONG Chun-jiao, LI Peng-hui, ZHENG Rui
Abstract: To investigate the spatiotemporal distribution pattern of electric vehicle-pedestrian collision accidents, the indicators of clustering strength and accident severity were incorporated into the traditional kernel density estimation method. A spatiotemporal kernel density estimation approach for traf...
2024, 24(6): 299-310. doi: 10.19818/j.cnki.1671-1637.2024.06.021
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