Popularization of various portable mobile devices with positioning function produces massive spatial-temporal trajectory data of moving objects, and the huge data scale has brought severe challenges to trajectory data management and analysis. Therefore, a spatial-temporal trajectory data compression...

In order to solve the difficulty of acquiring tagged corpus, a Chinese word sense disambiguation method is proposed on the basis of semi-supervised learning convolutional neural networks (CNN). Firstly, the word, part of speech and semantic category are extracted as discriminative features, which ar...

Existing data fusion visualization methods have high requirements on data accuracy, complex matching process, redundant organization mode of traditional point cloud, poor dynamics for complex data and low index efficiency, and thus it is difficult to efficiently visualize multi-source data in networ...

Testing model is an important basis to create the test cases of safety critical function of high-speed railway signal system. To solve the problem that the characteristics of signal system are not fully represented in the modeling process of safety critical function test of high-speed railway signal...

Due to the rapid development of electric vehicles (EVs), the number of EVs has surged. Connecting EVs to micro-grid in charge-discharge scheduling become an effective way to reduce the negative impact of large-scale EVs on the power grid. Thus, given the source-charge characteristics of the EVs, wit...

To study the DC operation parameters of the 10 kV AC cable in different laying modes and DC operation topologies, according to the example of the three-core cross-linked polyethylene (XLPE) cable widely used in 10 kV AC distribution network, the temperature field, flow field and electric field coupl...

Empty wagon allocation is the key link in railway transportation. The scheme of empty wagon allocation should have robustness to avoid the influence of uncertain factors. Based on the fixed technical operation time of stations and travel time between stations, the connection time relationships betwe...

Reasonable shunting operation plans can greatly improve the operation efficiency and maintenance capacity of the electric multiple unit (EMU) depots. On the premise of determinate layout of tracks and each function sections, the effect of EMU marshalling status and occupation on the shunting operart...

For automatic and safe parking of buses in public transportation environment, the safety constraints such as the degree of fitness with the platform geometry, the influence of vehicle occupancy, and the driving continuity are explored. The nonlinear constraint optimization function is used to calcul...

In order to analyze the causes of rail corrugation in curve section of heavy haul railway, a refined wheel-rail three-dimensional contact model is established based on the friction self-excited vibration theory. The influences of different stiffness, friction coefficient and superelevation on the un...

To study the characteristics of wheelset elastic vibration and their effect on the dynamic performance of heavy-haul freight wagon, a railway wagon with a 30 t axle load is considered as the research object in this work. The running stability and the curving performance of vehicle are investigated i...

The effect of skew tail-wind on driving safety cannot be ignored. To investigate the effect of skew tail-wind, the aerodynamic characteristics of the vehicle under the action of skew tail-wind were tested by using a wind tunnel test device of the moving vehicle model, aiming at the vehicle and bridg...

The effect of the wheel load could cause the self-vibration effect of high frequency for the track slab. To analyze the fatigue characteristic of CRTS Ⅱ track slab under high-frequency load and the effect of the self-vibration of the track slab on its fatigue life, the fatigue characteristics of the...

Aiming at investigating the correlation between the parameters of a vehicle’s secondary suspension structure and the uneven wear of the running wheel tires, the goal of optimization was to improve the uneven wear performance of the running wheel tires and the design variables are the vehicle’s secon...

To explore the failure mechanism of Jinsha River Bridge at Zhubalong, a 1∶20 scaled numerical simulation model of the bridge was built with the measured field data in flood discharge, while the influence of air trapped in the diaphragm chamber at the bottom of T-beam is analyzed. The characteristics...

To deeply explore the seismic damage mechanism and evaluate the ductile capacity of hollow RC columns, square and rectangular hollow specimens with different aspect ratios, longitudinal rebar ratios, and stirrup ratios were tested under quasi-static loading. The crack distribution and damage state w...

The influence of axial force and shear effect on the longitudinal deformation of shield tunnel structures under different loads is investigated by Fourier series method. Taking into account the foundation reaction caused by shear deformation, the governing differential equation of bending deformatio...

Landslide disasters occur frequently in loess area. Landslides, especially super deep landslides, have a significant impact on the stress and deformation of existing tunnel structures. The deformation characteristics and mechanical responses of tunnel-landslide systems are extremely complex and have...

The rock mass in a fault zone is a special type of rock mass that has attracted wide attention in the field of civil engineering. Triaxial tests are conducted on the rock mass of a concealed fault zone of a hydropower project on the Nujiang river to obtain the mechanical parameters of the rock mass ...

Peak ground-motion acceleration (PGA) directly reflects ground shaking intensity with the advantages in conceptual clarity and engineering application. Prediction of PGA, along with site condition correction, needs to be handled in site-specific seismic design. In this work, 32 stations and the eart...

Non-parametric spectral inversion is the key technology to study the seismic source, propagation path and site effects. The reliability of spectral inversion was responsible for exactly understanding seismic source physics and effectively predicting seismic hazards. In this work, the non-parametric ...

In order to study the mechanism of plant roots in preventing slope soil cracking, a self-developed uniaxial tensile test device was used to quantitatively study the strengthening effect of roots on the tensile strength of soil and analyze the tensile failure mechanism of root-soil composite. The tes...

Geogrid has been widely adopted in ballasted railways to improve the bearing capacity of ballast and its resistance to lateral deformation. The mechanical properties of geogrid-reinforced ballast aggregate are seriously affected by contaminants of coals falling from the moving hauls or clay fines fr...

The sound absorption performance of porous asphalt concrete has an important impact on reducing tire/pavement noise. The sound absorption coefficients of porous asphalt concrete (PAC), stone matrix asphalt (SMA-13) and a dense graded asphalt concrete (AC-13) are tested adopting the standing wave rat...

To solve the instability problem of newly designed double-limb cold-formed C-shaped steel yurts under vertical loads such as ice and snow, the stability performance of a double-limb cold-formed C-shaped steel portal frame with an in-plane toono was investigated. The failure modes and bearing capacit...

In order to reduce the damage degree of masonry infills and improve their deformation recoverability under earthquake, based on the failure mechanism of infill walls of reinforced concrete frames, a structural measure of installing horizontal slip layers (HSLs) in masonry infills constructed by holl...

To explore the failure mode and bearing capacity of the granite cladding panel under different reinforcements, flexural tests were conducted on the windward and leeward sides of 33 granite cladding panels with undercut bolt anchorage. The joints of the granite cladding panels were reinforced with me...