Vehicle trajectory data contains massive spatial-temporal traffic information, which is one of the necessary data for traffic state estimation. To solve the problem that it's difficult to obtain the fully sampled vehicular trajectory in the existing data collection environment, oriented to the conne...

To clarify the vehicle trajectory characteristics and driving behavior preference of hairpin curves of mountain roads, the vehicle trajectory and lateral distance between wheel track and lane marking on hairpin curves were collected in the condition of natural driving, the track curvature were calcu...

Combining autonomous vehicle (AV) with time-sharing leasing or peer-to-peer (P2P) leasing, two novel travel modes are provided for travelers. To explore the behavior characteristics of AV rental, travelers’ preferences and influence factors for choosing AV time-sharing leasing, AV P2P leasing, priva...

Autonomous vehicles have an important influence on travel mode choices of travelers, which can affect urban traffic demand, urban spatial layout and urban planning. Based on the extended technology acceptance model and the heterogeneity of different travelers’ preferences, a random parameter Logit m...

In order to study the seismic performance of assembled concrete piers in different connection modes, the quasi-static test of two assembled concrete piers (using steel tube shear connector and grouting sleeve connection, respectively) and a cast-in-place integral concrete pier was conducted, the hy...

In order to find a nondestructive and quantitative monitoring method for steel corrosion in reinforced concrete, theoretical formulas of the partial modulus and corrosion rate of rebar are derived with consideration of the influence of the Earth’s background magnetic field and environmental interfer...

In order to investigate the effect of geogrid on the mechanical properties of clay-contaminated ballast, a series of direct shear tests were carried out on geogrid-reinforced ballast specimens under four normal pressures and three degrees of clay pollution. The effects of geogrid on the shear streng...

In order to explore the longitudinal and lateral resistance mechanism, contribution and influence of steel rod depth and shoulder width of steel rod reinforced sleeper, and to provide a new method for increasing resilience and stability of the long sharp slope in Sichuan−Tibet railway, a series of l...

In order to study the influence of hardening railway ballast bed on its own dynamic characteristics, considering the real shape of ballast particles, a simulation analysis model of hardening ballast bed was established by using discrete element method. The influences of dirty hardening and hardening...

The strength degradation is an important reason for the high-speed and long-distance movement of landslides. In order to explore the influence of landslide strength attenuation on landslide movement ability, taking a high-speed Vajont landslide in Italy as an example, combined with field investigati...

With more and more tunnel projects passing through landslide areas, research on the interaction between landslide and tunnel is particularly important. To better understand the influence of landslide with different angles of sliding zone on the stress of tunnel lining structure, taking the Nanping t...

To understand the dynamic characteristics and performances of bridge-tunnel transition sections with deep buried pile-plank structures (DBPPS), dynamic field tests were performed on a transition zone including a tunnel entrance, a transition section and a abutment in the Shanghai—Kunming high-speed ...

Development characteristics and evolution law of the rock bending belts during the slope toppling deformation process is the key tostudying the geological development and mechanical behaviour of counter-tilt layered rock slopes in the process of deformation and failure. In order to reveal the influe...

Affected by factors such as huge size and complex geological conditions, the super-large anchorage caisson foundation has high quality and safety risks in the construction stage. In order to assess these risks accurately, the work breakdown structure-risk breakdown structure (WBS-RBS) method, combin...

To investigate the penetration mechanism of jacked piles in laminated clay and utilize the advantages of discrete element PFC^2D software in dealing with large deformation and nonlinearity, given that the contact bonding model excels in soil simulation, a discrete element model for jacked pile penetr...

Formation water pressure and seepage volume in front of excavation face are important parameters of underwater tunnel projects, and also key indexes for designing the support force of excavation face and advanced water blocking and reinforcement parameters. Firstly, in view of the limitation in anal...

Due to the large scale and long term of snow disaster in highway of the cold regions, the highway system in Heilongjiang Province and its frequent snowdrift disasters were taken as research objects to explore the macro conditions of disaster formation from the aspect of disaster occurrence mechanism...

Two kinds of Class F fly ash-slag based geopolymer concrete, namely GPC-10 (10% slag content, 80 °C high-temperature curing) and GPC-50 (50% slag content, standard curing), are characterized by good mechanical properties. To understand better their carbonation resistance, rapid carbonation tests wer...

Straight-line fitting has received extensive attention both in curve fitting research and engineering practice. The methods of ordinary least squares and orthogonal least squares fitting ignore the existence of the observation error correlation. The coordinate pairs of surveying points, obtained by ...

To improve the ride comfort of cooperative adaptive cruise control (CACC) system under the mixed traffic flow that comprises connected automated vehicle (CAV) and manual vehicle (MV), a dual-layer control strategy considering ride comfort (RC-DCS) is proposed. From a macro perspective, the upper con...

In order to study the parameter matching law of yaw damper for the lateral stability of high-speed trains under different wheel-rail contact conditions, a simplified model of vehicle lateral dynamics was established aiming at the typical parameters of high-speed trains operating in China. Considerin...

In order to understand the abnormal wear mechanism of the contact wire and the pantograph strip in the rigid catenary system, and to improve the service life of its friction elements, tests were carried out on the current-carrying friction and wear performance of the rigid catenary system with a blo...

In order to fully understand the service performance of ER8C and ER8 wheels for high-speed electric multiple units (EMUs), the chemical composition, the conventional mechanical properties, the fatigue properties, the impact properties, the ductile-brittle transition temperature, the fracture toughne...

Studying urban rail vehicles from the perspective of industrial design helps to improve train comfortability, safety, aesthetics, and cultural characteristics, so as to promote the image of the cities. Firstly, the main shapes and characteristics of six types of typical urban rail vehicles in China ...

In order to configure and evaluate the train collision energy scheme more scientifically and comprehensively, the maximum average acceleration, maximum instantaneous acceleration and energy utilization rate of trains were taken as evaluation indexes, and a more reasonable comprehensive weight coeffi...

Piecewise Logistic map (PLM) is introduced into 2D coupled map lattices (2DCML) model to face a tradeoff between complexity and efficiency of chaotic systems, and a transformation method based on transient status values is used to make the output sequence of the model obey a uniform distribution. Th...

To improve clustering adaptability, real-time performance, and tracking accuracy in the process of dynamic obstacle detection and tracking with lidar, an adaptive density clustering algorithm and a multi-feature data association method are developed for detection and tracking respectively. Firstly, ...

A multi-objective optimization model of siting and sizing of inverter feedback devices is established with an objective of saving the investment cost of inverter feedback devices and improving the utilization rate of regenerative braking energy. The AC-DC hybrid power flow algorithm that involves th...