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| 1 | Caltrans use of scrap tires in asphalt rubber products:a comprehensive review显示文摘The California Department of Transportation(Caltrans) has been using scrap tire rubber in asphalt pavements since the 1970 s in chip seals and the 1980 s in rubberized hot mix asphalt(RHMA).Both the wet(field blend) and dry processes were used in early trials.Caltrans has also used rubber modified binders containing both crumb rubber modifier and polymer modifier that could be manufactured at a refinery facility,a terminal blend wet process.Since the beginning of this century,Caltrans increased the use of scrap tire rubber in paving projects and invested considerable resources in developing technically sound,cost effective,and environmentally friendly strategies for using scrap tire rubber in roadway applications.By the end of year 2010,approximately 31%of all hot mix asphalt(HMA) placed by Caltrans was rubberized HMA,roughly 1.2 million tons.Caltrans efforts in using asphalt rubber products were also demonstrated in its research and technology development.These included the construction of two full-scale field experiments,five warranty projects,and an accelerated pavement study using a heavy vehicle simulator.Additionally,terminal blend asphalt rubber and rubberized warm mix asphalts began to be experimented on trial basis.This paper provides a comprehensive review of Caltrans experience over four decades with asphalt rubber products.Current practices and future outlook are also discussed. | Haiping Zhou Sri Holikatti Peter Vacura | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，1： | 32 |
| 2 | Three-dimensional modeling and simulation of asphalt concrete mixtures based on X-ray CT microstructure images显示文摘X-ray CT(computed tomography) was used to scan asphalt mixture specimen to obtain high resolution continuous cross-section images and the meso-structure.According to the theory of three-dimensional(3D) reconstruction,the 3D reconstruction algorithm was investigated in this paper.The key to the reconstruction technique is the acquisition of the voxel positions and the relationship between the pixel element and node.Three-dimensional numerical model of asphalt mixture specimen was created by a self-developed program.A splitting test was conducted to predict the stress distributions of the asphalt mixture and verify the rationality of the 3D model. | Hainian Wang Zhihan Huang Lei Li Zhanping You Yu Chen | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，1： | 30 |
| 3 | Behavior of composite rigid frame bridge under bi-directional seismic excitations显示文摘Pushover analysis and time history analysis are conducted to explore the bi-directional seismic behavior of composite steel-concrete rigid frame bridge,which is composed of RC piers and steel-concrete composite girders.Both longitudinal and transverse directions excitations are investigated using OpenSees.Firstly,the applicability of pushover analysis based on the fundamental mode is discussed.Secondly,an improved pushover analysis method considering the contribution of higher modes is proposed,and the applicability on composite rigid frame bridges under bi-directional earthquake is verified.Based on this method,an approach to predict the displacement responses of composite rigid frame bridge under random bi-directional seismic excitations by revising the elasto-plastic demand curve is also proposed.It is observed that the developed method yield a good estimate on the responses of composite rigid frame bridges under bi-directional seismic excitations. | Xiaogang Liu Jiansheng Fan Jianguo Nie Guo Li | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，1： | 22 |
| 4 | Laboratory investigation on the properties of asphalt mixtures modified with double-adding admixtures and sensitivity analysis显示文摘In order to improve the high temperature stability and low temperature cracking resistance of asphalt mixtures,two varieties of admixtures(anti-rutting agent and lignin fiber) were selected and then combined.This is called double-mixture technology.A series of tests about pavement performance of base asphalt mixtures and asphalt mixtures with admixture of anti-rutting agent or lignin fiber were conducted.Meanwhile sensitivity analyses were used to study the influence of three factors(i.e.,asphalt grade,aggregate type and gradation) on the high and low temperature performance and water stability of said asphalt mixtures.Test results indicated that the dynamic stability,residual stability,TSR and low temperature failure strain of asphalt mixtures have increased significantly with the additions of 0.40% anti-rutting agent and 0.36% lignin fiber.These results show that the high and low temperature and water stabilities of asphalt mixtures improve obviously.This supports the beneficial comprehensive effect of the double admixture.The problem of improving the asphalt mixtures performance with a single admixture is solved,in addition to also improving other pavement performance.Based on the sensitivity analysis,the most influential factors of dynamic stability,low temperature failure strain and TSR are the gradation,followed by asphalt grade and aggregate type. | Zhen Fu Yanni Dang Bo Guo Yue Huang | 2016 | Journal of Traffic and Transportation Engineering(English Edition)2016，3，5： | 17 |
| 5 | A dissipated energy comparison to evaluate fatigue resistance using 2-point bending显示文摘Fatigue is the main failure mode in pavement engineering.Typically,micro-cracks originate at the bottom of asphalt concrete layer due to horizontal tensile strains.Micro-cracks start to propagate towards the upper layers under repeated loading which can lead to pavement failure.Different methods are usually used to describe fatigue behavior in asphalt materials such as:phenomenological approach,fracture mechanics approach and dissipated energy approach.This paper presents a comparison of fatigue resistances calculated for different dissipated energy models using 2-point bending(2PB) at IFSTTAR in Nantes.2PB tests have been undertaken under different loading and environmental conditions in order to evaluate the properties of the mixtures(stiffness,dissipated energy,fatigue life and healing effect). | Cinzia Maggiore Gordon Airey Paul Marsac | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，1： | 16 |
| 6 | Multi-state supernetworks:recent progress and prospects显示文摘Supernetworks have long been adopted to address multi-dimensional choice problems,which are thorny to solve for classic singular networks.Originated from combining transport mode and route choice into a multi-modal network,supernetworks have been extended into multi-state networks to include activity-travel scheduling,centered around activity-based models of travel demand.A key feature of the network extensions is that multiple choice facets pertaining to conducting a full activity program can be modeled in a consistent and integrative fashion.Thus,interdependencies and constraints between related choice facets can be readily captured.Given this advantage of integrity,the modeling of supernetwork has become an emerging topic in transportation research.This paper summarizes the recent progress in modeling multi-state supernetworks and discusses future prospects. | Feixiong Liao Theo Arentze Harry Timmermans | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，1： | 16 |
| 7 | Temperature action and effect of concrete-filled steel tubular bridges:A review显示文摘Concrete-filled steel tube(CFST)has been widely applied in bridges due to its excellent structural and constructional performance.In CFST bridges,temperature action is not only an important but also a special load that must be considered in bridge design,construction and structural evaluation.This paper presents an overview on current researches of the temperature action and effect of CFST bridges.The historical and spatial characteristics as well as corresponding influencing factors of temperature distributions are summarized,and classifications of temperature actions are also reviewed.Results show that in-depth investigations of the contributions of temperature influencing factors can help to effectively reduce the adverse temperature effects on CFST bridges in the design stage.Due to the lack of long-term measurements and insufficient use of historical meteorological data,research on the representative value along with correlation analysis of CFST temperature actions and meteorological parameters have to be further carried out.In the meanwhile,a decomposition method of temperature distribution is proposed based on structural effects of CFST bridges in this paper.The decomposed temperature actions can be used for more accurate effect calculation than traditional temperature action classification method,especially for CFST truss bridges.At last,specific temperature action patterns still need to be investigated in some of the special problems,such as longitudinal temperature differences along the CFST arch rib and thermal debonding in the CFST interface.Further investigations are required on the accurate simulation of temperature distribution of CFST bridges considering the shading effects of components and terrain. | Jiang Liu Yongjian Liu Chenyu Zhang Qiuhong Zhao Yi Lyu Lei Jiang | 2020 | Journal of Traffic and Transportation Engineering(English Edition)2020，7，2： | 15 |
| 8 | Lane departure warning systems and lane line detection methods based on image processing and semantic segmentation:A review显示文摘Recently,the development and application of lane line departure warning systems have been in the market.For any of the systems,the key part of lane line tracking,lane line identification,or lane line departure warning is whether it can accurately and quickly detect lane lines.Since 1990 s,they have been studied and implemented for the situations defined by the good viewing conditions and the clear lane markings on road.After then,the accuracy for particular situations,the robustness for a wide range of scenarios,time efficiency and integration into higher-order tasks define visual lane line detection and tracking as a continuing research subject.At present,these kinds of lane marking line detection methods based on machine vision and image processing can be divided into two categories:the traditional image processing and semantic segmentation(includes deep learning)methods.The former mainly involves feature-based and model-based steps,and which can be classified into similarity-and discontinuity-based ones;and the model-based step includes different parametric straight line,curve or pattern models.The semantic segmentation includes different machine learning,neural network and deep learning methods,which is the new trend for the research and application of lane line departure warning systems.This paper describes and analyzes the lane line departure warning systems,image processing algorithms and semantic segmentation methods for lane line detection. | Weiwei Chen Weixing Wang Kevin Wang Zhaoying Li Huan Li Sheng Liu | 2020 | Journal of Traffic and Transportation Engineering(English Edition)2020，7，6： | 14 |
| 9 | Evaluation of pedestrian mid-block road crossing behaviour using artificial neural network显示文摘Pedestrians usually cross the road at mid-block locations in India because of the ease and convenience to reach their destination as compared to intersection locations.It is important to evaluate the pedestrian gap acceptance behavior at mid-block locations because of inadequate vehicular gaps under mixed traffic condition,which translates into the pedestrian road crossing behavior.The present study examines the pedestrian gap acceptance behaviour by employing an artificial neural network(ANN) model for understanding the decision making process of pedestrians,i.e.,acceptance or rejection of vehicular gaps at a mid-block location.From the results it has been found that the pedestrian rolling gap,frequency of attempt,vehicular gap size,pedestrian speed change condition and vehicle speed have major role in pedestrian gap acceptance.These results can lead to a better design of pedestrian crossing facilities where adequate gaps are not available in vehicular flow at mid-block crosswalk locations. | B Raghuram Kadali Nivedan Rathi Vedagiri Perumal | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，2： | 13 |
| 10 | Progress on wheel-rail dynamic performance of railway curve negotiation显示文摘Recent advances on wheel-rail dynamic performance of curve negotiation are reviewed in this paper.There are four issues,the mechanism and calculation method of curve negotiation,the analysis and assessment of dynamic performance of vehicle,the effect of vehicle parameters on dynamic performance,and the influence of railway parameters on dynamic performance.The promising future development of wheel-rail coupled dynamics theory is analyzed in the research of curve negotiation.The framework and technique matching performance of wheel-rail dynamic interaction on the curved track are put forward for modern railways.In addition,the application of performance matching technique is introduced to the dynamic engineering,in which the wheel load is reduced obviously when the speed of train is raised to 200-250 km/h. | Kaiyun Wang Chao Huang Wanming Zhai Pengfei Liu Shen Wang | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，3： | 13 |
| 11 | Applications of terrestrial laser scanning for tunnels: a review显示文摘In recent years,the use of terrestrial laser scanning( TLS) technique in engineering surveys is gaining an increasing interest due to the advantages of non-contact,rapidity,high accuracy,and large scale. M illions of accurate 3D points( mmlevel accuracy) can be delivered by this technique with a high point density in a short time( up to 1 million points per second),which makes it a potential technique for large scale applications in engineering environments such as tunnels,bridges,and heritage buildings. Tunnels,in particular those with long lengths,create great challenges for surveyors to obtain the satisfactory scanned data. This paper presents a short history of TLS techniques used for tunnels. A general overviewof TLS techniques is given,followed by a reviewof several applications of TLS for tunnels. These applications are classified as: detecting geological features of drilling tunnels,monitoring the geometry of tunnels during excavation,making deformation measurements,and extracting features. The reviewemphasizes howTLS techniques can be used to measure various aspects of tunnels. It is clear that TLS techniques are not yet a common tool for tunnel investigations,but there is still a huge potential to excavate. | Weixing Wang Weisen Zhao Lingxiao Huang Vivian Vimarlund Zhiwei Wang | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，5： | 12 |
| 12 | Research status and progress of tunnel frost damage显示文摘The problems of frost damage in cold region tunnels have been systematically analyzed and studied by local and foreign scholars. A series of important achievements has been proposed. In this paper, the research results on mechanism of frost damage, analysis of temperature field, classification of frost damage levels, and frost prevention technologies are summarized. The principles and limitations of the three major theories of frost damage mechanism are elaborated, and the importance of structural damage research on shotcrete in cold region tunnels is emphasized. Two major defects of current research on temperature field are concluded. The present situation of research on frost damage classification of cold region tunnels is discussed. The directions of further studies for tunnel temperature field and frost damage classification are proposed. The prevention technologies for tunnel frost damage in foreign countries, and the advantages and disadvantages of the four major prevention technologies in China and their applicable conditions, are concluded and analyzed. Meanwhile, the importance of frost damage classification is highlighted. Therefore, the local and foreign research results for cold region tunnels are systematically concluded, the defects of the researches are comprehensively analyzed, and the directions of further study are proposed. They are significant to solve the problems of tunnel frost damage in the future. | Yanbin Luo Jianxun Chen | 2019 | Journal of Traffic and Transportation Engineering(English Edition)2019，6，3： | 11 |
| 13 | A review on application of composite truss bridges composed of hollow structural section members显示文摘Composite truss with hollow structural section(HSS) members is deemed as the structure applicable to large-span and heavily-loaded bridges. To promote the application of composite truss bridge with HSS members in China, this paper described its structural characteristics and technology in details. Besides, not only were 32 typical design cases of composite truss bridges with HSS members collected, but also the corresponding historical development was summed up. Comparisons on structural components, characteristics and engineering applications were made among composite truss bridges with HSS members in different structural forms. Then, the analysis on the characteristics of composite truss bridges with concrete-filled steel tubular(CFST) chords was conducted, and the challenges on the aspects of complicated joints and interfacial debonding were pointed out. To address these problems, the concrete-filled rectangular hollow section(CFRHS)stiffened with PBLs(Perfobond Ribs) was proposed to improve the reliability of confinement effect in CFST member and force transfer in joints. The advantages on the mechanical properties of CFRHS structure stiffened using PBLs were systematically expounded with respect to the behaviors of steel plate, interface, member and joint. Moreover, the structure design, construction technology, structural calculation and economic efficiency of the practical bridge with CFRHS chords stiffened using PBLs were comprehensively analyzed.The results demonstrated that composite truss bridge with PBL-stiffened CFRHS members was competitive in mechanical performance and construction. | Zhijuan Tian Yongjian Liu Lei Jiang Weiqing Zhu Yinping Ma | 2019 | Journal of Traffic and Transportation Engineering(English Edition)2019，6，1： | 11 |
| 14 | Review and discussion on fire behavior of bridge girders显示文摘This paper presents an overview on fire behavior of bridge girders mainly including prestressed concrete(PC) bridge girders and steel bridge girders. The typical fire accidents occurred on bridges are illustrated and, the seriousness of posing threats to bridge structures resulted from increasing traffic fires, specially intense hydrocarbon fires generated from petrol-chemicals, is highlighted. The current researches, embracing high-temperature properties of constituent materials, prestress state, measurement in fire tests, numerical methods, structural fire resistance, and so forth, taken on coping with problems existing in fire behavior and structural fire behavior in bridge girders are reviewed and discussed. Further, strategies for enhancing fire resistance of bridge girders followed with failure criterion and mode in types of bridge structures are provided. Future research area along with emerging trends in structural fire behavior of bridge girders is also recommended for mitigating fire hazards occurred on bridge girders. Herein, it can be attained a conclusion from review and discussion that prestressed concrete bridge girders with thin webs, specially T-shaped bridge girder, are prone to unstable under fire exposure conditions. High-strength concrete utilized in prestressed concrete bridge girders is vulnerable to spalling at elevated temperature. Steel-truss bridge girder present a more significant fragility to fire exposure compared than other steel bridge girders. | Gang Zhang Xiaocui Zhao Zelei Lu Chaojie Song Xuyang Li Chenhao Tang | 2022 | Journal of Traffic and Transportation Engineering(English Edition)2022，9，3： | 11 |
| 15 | Emergency material scheduling optimization model and algorithms:A review显示文摘In the emergency management of disruptions,efficient emergency material scheduling(EMS) is a key factor to save people’s lives and reduce loss.Based on the literature of EMS and related areas in recent years,the research was summarized from two aspects of EMS optimization model and algorithms.It is concluded that the EMS optimization models mainly aim at the shortest time,shortest distance,minimum cost,maximum satisfaction and fairness,etc.The constraints usually include the quantity of supply depots,relief supply and vehicles,the types of commodities,the road network conditions,the budgets and the demand forecast of emergency materials.Multi-objective model is more complex and it usually considers more than one objective.To find the optimized solution,the multiobjective model with complex constraints needs more efficient algorithms.The existing algorithms,including mathematic algorithm and heuristic algorithm,have been categorized.For NP-hard(non-deterministic polynomial hard) problems,heuristic algorithms should be designed,which mainly include genetic algorithm(GA),ant colony optimization(ACO),particle swarm optimization(PSO),etc.Based on the characteristics of the optimization model and various algorithms,appropriate algorithm or tools should be chosen and designed to obtain the optimized solution of EMS model.Finally,the development trends of EMS optimization model and algorithm in the future are proposed. | Hui Hu Jing He Xiongfei He Wanli Yang Jing Nie Bin Ran | 2019 | Journal of Traffic and Transportation Engineering(English Edition)2019，6，5： | 11 |
| 16 | Influence of roadway geometric elements on driver behavior when overtaking bicycles on rural roads显示文摘The objective of this research was to determine what influence geometric design elements of roadway may have on driver behavior during the overtaking maneuver.This was part of a larger research effort to eliminate crashes(and the resulting fatalities and injuries) between bicycles and motorized vehicles.The data collection process produced 1151 observations with approximately 40 different independent variables for each data point through direct observation,sensor logging,or derivation from other independent variables.Prior research by the authors developed a means to collect real-time field data through the use of a bicycle-mounted data collection system.The collected data was then used to model lateral clearance distance between vehicles and bicycles.The developed model confirmed field observations that the lateral clearance distance provided by drivers changes with vehicle speed and oncoming vehicle presence.These observations were presented by the authors previously.The model shows that driver behavior can be adjusted by the inclusion,or exclusion,of geometric elements.Evaluating roadways(or roadway designs) based on this model will enable stakeholders to identify those roadway segments where a paved shoulder would prove an effective safety countermeasure.This research will also enable roadway designers to better identify during the design phase those roadway segments that should be constructed with a paved shoulder. | Jeremy R.Chapman David A.Noyce | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，1： | 10 |
| 17 | Finite element model updating of a tied-arch bridge using Douglas-Reid method and Rosenbrock optimization algorithm显示文摘Condition assessment of bridges has become increasingly important.In order to accurately simulate the real bridge,finite element(FE) model updating method is often applied.This paper presents the calibration of the FE model of a reinforced concrete tied-arch bridge using Douglas-Reid method in combination with Rosenbrock optimization algorithm.Based on original drawings and topographic survey,a FE model of the investigated bridge is created.Eight global modes of vibration of the bridge are identified by ambient vibration tests and the frequency domain decomposition technique.Then,eight structural parameters are selected for FE model updating procedure through sensitivity analysis.Finally,the optimal structural parameters are identified using Rosenbrock optimization algorithm.Results show that although the identified parameters lead to a perfect agreement between approximate and measured natural frequencies,they may not be the optimal variables which minimize the differences between numerical and experimental modal data.However,a satisfied agreement between them is still presented.Hence,FE model updating based on Douglas-Reid method and Rosenbrock optimization algorithm could be used as an alternative to other complex updating procedures. | Tobia Zordan Bruno Briseghella Tao Liu | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，4： | 10 |
| 18 | Study on triaxial test method and failure criterion of asphalt mixture显示文摘Asphalt mixture is the most widely used pavement material all over the world.In China,more than 90%of service expressways are asphalt pavement.However,current asphalt pavement design method still has irrationality.Even though maximum tensile stress theory is used as failure criterion,pavement structure under the effects of wheel load is in three-dimensional complex stress state.Obviously,one-dimensional strength theory cannot reflect the failure characteristics and the resistance of pavement structure.So it is necessary to study the failure criterion of asphalt mixture under three-dimensional complex stress state.Due to limitations of test equipment,there are almost no studies in related area.Under this background,this paper develops a new triaxial test method,according to the investigation of strength characteristics of asphalt mixture under complex stress state through plane isobaric/axial tensile test,plane isobaric/axial compression test,plane tensile and compression/axial tensile test,to reveal the general rules of asphalt mixture's strength failure.The failure mode is divided into three types:tensile failure,shear failure and rheological failure.The tensile meridian and compression meridian in the stress space and strength envelope in the p plane where hydrostatic pressure is greater than zero are obtained,and the failure criterion of asphalt mixture under complex stress state is established,providing theoretical method and scientific basis for structure design as well as strength check of asphalt pavement under three-dimensional stress state. | Jianlong Zheng Tuo Huang | 2015 | Journal of Traffic and Transportation Engineering(English Edition)2015，2，2： | 9 |
| 19 | Finite element model validation of bridge based on structural health monitoring——Part I: Response surface-based finite element model updating显示文摘In the engineering practice, merging statistical analysis into structural evaluation and assessment is a tendency in the future. As a combination of mathematical and statistical techniques, response surface(RS) methodology has been successfully applied to design optimization, response prediction and model validation. With the aid of RS methodology,these two serial papers present a finite element(FE) model updating and validation method for bridge structures based on structural health monitoring. The key issues to implement such a model updating are discussed in this paper, such as design of experiment,parameter screening, construction of high-order polynomial response surface model,optimization methods and precision inspection of RS model. The proposed procedure is illustrated by a prestressed concrete continuous rigid-frame bridge monitored under operational conditions. The results from the updated FE model have been compared with those obtained from online health monitoring system. The real application to a full-size bridge has demonstrated that the FE model updating process is efficient and convenient.The updated FE model can relatively reflect the actual condition of Xiabaishi Bridge in the design space of parameters and can be further applied to FE model validation and damage identification. | Zhouhong Zong Xiaosong Lin Jie Niu | 2015 | Journal of Traffic and Transportation Engineering(English Edition)2015，2，4： | 9 |
| 20 | Fleet size estimation for spreading operation considering road geometry,weather and traffic显示文摘Extreme weather conditions(i.e.snow storm) in winter time have caused significant travel disruptions and increased delay and traffic accidents.Snow plowing and salt spreading are the most common counter-measures for making our roads safer for motorists.To assist highway maintenance authorities with better planning and allocation of winter maintenance resources,this study introduces an analytical model to estimate the required number of trucks for spreading operation subjective to pre-specified service time constraints considering road geometry,weather and traffic.The complexity of the research problem lies in dealing with heterogeneous road geometry of road sections,truck capacities,spreading patterns,and traffic speeds under different weather conditions and time periods of an event.The proposed model is applied to two maintenance yards with seven road sections in New Jersey(USA),which demonstrates itself fairly practical to be implemented,considering diverse operational conditions. | Steven I-Jy Chien Shengyan Gao Jay N.Meegoda Taha F.Marhaba | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，1： | 9 |
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