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	1. Mechanism of Safety Hazard Investigation for Metro Contruction
	LI Meng,CHEN Zhixin
	Transportation Engineering 11 May 2023
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	Abstract:The investigation of safety hazards is essential role in metro construction. However, due to many regulations and participants\' opinions needing to be considered, current safety hazards identified against the rules often need help with challenges such as being time-consuming, poor authority, poor traceability, or lack of real-time information. This study develops a novel blockchain-based safety hazard regulations storage system(SHRSS) and safety hazard monitoring system(SHMS) for metro construction to address these issues, expanding the use of blockchain in metro construction. The SHRSS constructs a safety hazard regulations database, standardized regulations, and stores in blocks. The SHMS builds a safety hazard information-sharing management blockchain, allowing each monitoring party to participate in risk monitoring. The paper draws discussions and summarizes the primary scientific contribution.
	TO cite this article:LI Meng,CHEN Zhixin. Mechanism of Safety Hazard Investigation for Metro Contruction[OL].[11 May 2023] http://en.paper.edu.cn/en_releasepaper/content/4760747


	2. Reaction spectrum comparative analysis of seismic performance of 62m concrete-filled steel tube beam bridge with curved string truss before and after reinforcement
	CHEN Daihai,XU Zhenqi,LI Zheng,MA Laijing,MA Fengrui
	Transportation Engineering 19 August 2019
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	Abstract:Taking a 62m concrete-filled steel tube bridge with curved string truss as the research object, according to its reinforcement scheme, the spatial finite element models of the bridge before and after reinforcement were established by using the general finite element software ANSYS. The natural frequencies of the bridge before and after reinforcement were calculated, and the seismic performance of the bridge was analyzed by using the response spectrum method. The results show that the frequencies of the reinforced bridges increase in varying degrees, especially the vertical and torsional frequencies. Before and after reinforcement, the maximum axial force in the upper chord of the bridge is the largest, and the shear force and bending moment are small. The maximum internal force basically appears at the two ends of the upper chord. This position should be regarded as the weak link of the bridge seismic resistance. Under the same cases, the axial force of the bridge after reinforcement is reduced by about 30% compared with that before reinforcement, and the displacement of the bridge after reinforcement is reduced in varying degrees. The reinforcement measures can improve the lateral and vertical stiffness of the bridge, especially the stiffness of the deck system.
	TO cite this article:CHEN Daihai,XU Zhenqi,LI Zheng, et al. Reaction spectrum comparative analysis of seismic performance of 62m concrete-filled steel tube beam bridge with curved string truss before and after reinforcement[OL].[19 August 2019] http://en.paper.edu.cn/en_releasepaper/content/4749442

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	3. Optimization Design of Hydraulically Interconnected Suspension Based on Orthogonal Experiment
	Zhou Bing,Long Lefei,Wu Xiaojian
	Transportation Engineering 06 March 2018
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	Abstract:In this paper, a 4-DOF roll-plane half-car model of hydraulically interconnected suspension (HIS) system is established, and the dynamic equations in frequency domain for the mechanical-hydraulic coupled system are derived. Then, the sensitivities of the vertical and roll modal responses to the hydraulic parameters are analyzed by employing the Sobol global analysis approach. The results indicate that the parameters of accumulators and damping valves have a significant effect on the vertical and roll modal vibrations. On this basis, the high sensitive hydraulic parameters are selected as optimized variables, and an optimization objective function is designed by mixing the vertical acceleration power spectral density and the roll angular acceleration power spectral density via an S-function. Thereafter the HIS system is optimized using the orthogonal optimization method. Finally, simulations at the speed of 10m/s, 20m/s and 30m/s indicate the optimized HIS system synthetically improves the vehicle ride comfort and roll stability.
	TO cite this article:Zhou Bing,Long Lefei,Wu Xiaojian. Optimization Design of Hydraulically Interconnected Suspension Based on Orthogonal Experiment[OL].[ 6 March 2018] http://en.paper.edu.cn/en_releasepaper/content/4743695


	4. Effect of alternative content of diatomite on creep deformation property of asphalt sand
	TAO Jinglin,CHENG Yongchun,YU Di,YANG Jinsheng,MA Jiansheng
	Transportation Engineering 01 May 2017
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	Abstract:High temperature and anti-ageing properties of asphalt could be improved by the addition of diatomite as researched in previous papers. It is believed to be alternative superior mineral filler in the construction of asphalt pavement in comparison with ordinary limestone powder. In this paper, compression strength and anti-deformation properties of asphalt sands with different content of diatomite were investigated by uniaxial compression failure test and uniaxial compression creep test. Five groups of asphalt sands with different volume content (0:1, 0.25:0.75, 0.5:0.5, 0.75:0.25 and 1:0) of diatomite to limestone were selected. The compression strength and secant modulus were firstly increased with the increasing of diatomite's content and then decreased when it exceed 0.75 whilst the creep strain was firstly decreased and then increased with the increasing of that. The compression strength and anti-deformation properties of asphalt sands were improved by the replacement of diatomite.
	TO cite this article:TAO Jinglin,CHENG Yongchun,YU Di, et al. Effect of alternative content of diatomite on creep deformation property of asphalt sand[OL].[ 1 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4731158


	5. Pedestrian Accommodation in Intersection Signal System: A Rule-based Dynamic Pedestrian Control Strategy
	NI Ying,LI Keping,DENG Tengyun
	Transportation Engineering 04 May 2016
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	Abstract:In intersection signal timing, pedestrian phase is quite often treated as a "slave" of the vehicle phase, resulting in unnecessary delays and safety problems. It is highly required to accommodate pedestrians in the signal system, and the development of automated pedestrian detection makes it be applicable. A rule-based dynamic pedestrian control (DPC) strategy accommodating pedestrian in intersection signal system has been proposed in the study. Phase structure including 8 vehicle phases and 4 pedestrian phases for a four-leg intersection has been introduced, and a set of rules regulating phase combination, phase sequence, and phase transition (internal and external) has been established. Dynamic pedestrian clearance interval has also been proposed. Different from previous control strategies, pedestrian demand is a decisive factor for signal timing optimization with consideration of pedestrian safety and comfort. According to simulation results, DPC is beneficial to reduce traffic delay at intersections crossed by a major street and a minor street.
	TO cite this article:NI Ying,LI Keping,DENG Tengyun. Pedestrian Accommodation in Intersection Signal System: A Rule-based Dynamic Pedestrian Control Strategy[OL].[ 4 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4686089


	6. NUMERICAL SIMULATION OF PEDESTRIAN-BRIDGE DYNAMIC INTERACTION
	Peng Youlu,Wu Dingjun,Li Qi
	Transportation Engineering 10 March 2016
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	Abstract:Researches on pedestrian-bridge interaction are not enough. In this paper, the pedestrian-induced lateral forces on a bridge are modelled as a sum of an equivalent static force exerted by pedestrians on rigid surface and a self-excited force due to an interaction between the pedestrian and the vibrating bridge. The dynamic balance equation is first established for the pedestrian-bridge interaction system. And then a new explicit integration method is applied to solve the equation with an iteration algorithm, computation procedures based on MATLAB are introduced simultaneously. In the case study at last, it is demonstrated that the new explicit integration method is absolutely reliable and there is nearly no difference between interaction and no interaction simulation in low crowd density, but big difference in high crowd denstiy.
	TO cite this article:Peng Youlu,Wu Dingjun,Li Qi. NUMERICAL SIMULATION OF PEDESTRIAN-BRIDGE DYNAMIC INTERACTION[OL].[10 March 2016] http://en.paper.edu.cn/en_releasepaper/content/4679531


	7. An Exploratory Study on Asphalt Pavement Shear Rutting Analysis based on Mohr-Coulomb Yield Criterion
	Wanqiu Liu,Xiaoyin Xing,Wang Zheren,Wang Shuhong
	Transportation Engineering 25 June 2014
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	Abstract:The application of semi-rigid base asphalt pavement structures has complemented the flexible pavement structures. The field test results from a test track built in Chongqing, China proved that, other than material selection, structural arrange can influence the shear rutting level. This paper introduces a simple multiaxial yield equation for asphalt pavement materials. It is closely associated with Mohr-Coulomb theory. It also considers both the strength difference between tensile and compressive loading and the difference between σ2 and σ3 in the actual stress field of pavement structures. An asphalt pavement permanent deformation estimation approach has also been introduced based on the proposed yield criterion. The proposed methods have been verified through the successful application in explaining the field test results of Chongqing test track.
	TO cite this article:Wanqiu Liu,Xiaoyin Xing,Wang Zheren, et al. An Exploratory Study on Asphalt Pavement Shear Rutting Analysis based on Mohr-Coulomb Yield Criterion[OL].[25 June 2014] http://en.paper.edu.cn/en_releasepaper/content/4601949


	8. Modeling stochastic multiple equilibrium behaviors on urban traffic networks
	ZHAO Hui,GAO Ziyou
	Transportation Engineering 06 December 2012
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	Abstract:In this paper, multiple traffic equilibrium with both competition and cooperation behaviors in stochastic environments is concentrated. Three different types of players, including Stochastic User Equilibrium (SUE) player, Stochastic System Optimum (SSO) player and Stochastic Cournot-Nash (SCN) player are simultaneously considered when the players are presumed to make routing decision with other players' perceptions of travel times. By formulating the stochastic multiple equilibrium as Variational Inequalities (VI), the multiple routing behaviors on urban networks is analyzed. Diagonalization technique is adopted to solve the VI problem arisen form the multiple traffic equilibrium model. And numerical examples are included to demonstrate the proposed models.
	TO cite this article:ZHAO Hui,GAO Ziyou. Modeling stochastic multiple equilibrium behaviors on urban traffic networks[OL].[ 6 December 2012] http://en.paper.edu.cn/en_releasepaper/content/4501284


	9. Integrated Yaw and Roll Stability Control for Sport Utility Vehicles in Highway Turning Scenario
	GE Jin,GAO Feng,XU Guoyan,SONG Xiaolin
	Transportation Engineering 14 May 2012
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	Abstract:This paper designs an integrated control strategy of vehicle yaw and rollover stability to enhance the active safety of highway vehicles in turning scenario. A rollover predictor is built based on Time-To-Rollover index. Modified Linear Quadratic Regulation is used in roll stability control, and Partial-Integral design is used in yaw stability control. With Carsim and MATLAB, simulations of fishhook maneuver and double lane-change test are conducted to evaluate the effectiveness of the control configuration and to validate the control method. The result shows that this controller performs well in maintaining vehicle roll and yaw stability. This study provides a theoretical basis towards a unified chassis control of coupled roll and yaw stability.
	TO cite this article:GE Jin,GAO Feng,XU Guoyan, et al. Integrated Yaw and Roll Stability Control for Sport Utility Vehicles in Highway Turning Scenario[OL].[14 May 2012] http://en.paper.edu.cn/en_releasepaper/content/4478467


	10. A web-based interview platform with geospatially prompted recalls for GPS household travel survey
	CHEN Wen,JI Minhe
	Transportation Engineering 30 March 2011
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	Abstract:Low data quality and heavy survey burden are standing issues in questionnaire-based household travel surveys (HTS). The proliferation of GPS and Internet-based geospatial technology provides great potential for innovation. This paper presents a web-based, geospatially prompted recall interview platform for GPS-based household travel survey. It made use of geospatial orientation and objects from Google Map as visual and semantic cues to prompt respondents' recall of travel experiences. The realized system functionality includes end-user self-administrated passive GPS survey data uploading, web server database management for GPS and trip data, automated GPS data noise removal, trip/stop candidate extraction, and GPS trajectory simplification, as well as annotated trip visualization and playback animation. Several essential tools for trip editing and attribute updates are provided in a logical and user-friendly manner. This approach was tested in Shanghai, a metropolitan setting of dense population, heavy inner-city traffic, and cement forests. The preliminary results indicated that the Internet map-based interface offered a great deal of heuristics to improve trip recall accuracy, while the backstage data mining algorithms was able to tolerate greater errors in trip recall and attribution from the user. The combined effects of rich geospatial and semantic hints, short system response time, and friendly user interface may help to significantly reduce the physiological and mental burdens on survey respondents, hence leading to a higher rate of participation.
	TO cite this article:CHEN Wen,JI Minhe. A web-based interview platform with geospatially prompted recalls for GPS household travel survey[OL].[30 March 2011] http://en.paper.edu.cn/en_releasepaper/content/4419328

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