Abstract: In order to investigate the uphill performance of heavy-haul trains, a multi-particle train model is built by the theory of train longitudinal dynamics, taking the plane and vertical sections of railway line into account. According to the principle that the train speed at the top of a slope should n...
Abstract: Considering the complexity and non-expandability of extracting abnormal noise features of shock absorbers by experience and manual work, applications of deep belief networks (DBNs) to identification of vehicle suspension shock absorber's abnormal noise are discussed, and a complete identification pr...
Abstract: In order to study the post-construction settlement of CFG(cement flyash gravel)pile composite foundation of high speed railway in soft soilI areas, finite element numerical simulations were made using ABAQUS software for several factors that influence the post-construction settlement of the CFG pile...
Abstract: In order to study the vortex-induced vibration performance of streamlined box girders and seek effective mitigation measures, a long-span cable-stayed bridge with steel-box girder was taken as an example to investigate the vortex-induced vibration of the main girder through section model wind tunnel...
Abstract: To reduce the pressure fluctuation during rail grinding operation, a new rail grinding pressure control system was proposed by adding a chamber adjuster into the traditional pneumatic constant pressure control system. The chamber adjuster consisted of a gas holder and a proportional flow valve. It c...
Abstract: In the initial stage of a highway planning, obsolete topographic maps and the difficulty and high economic costs in acquiring digital terrain data always present challenges for digital location design. To address these challenges, a method based on comprehensive analysis of current geographic inform...
Abstract: In order to select a reasonable sleeper type used for a high-speed railway bridge, based on a comprehensive investigation of sleeper types, sleeper-ballast bed models for type Ⅲ sleeper, broad sleeper, ladder sleeper and frame sleeper were established using the discrete element software PFC 3D, and ...
Abstract: In order to investigate the vibration correlation of a low-pylon cable-stayed bridge and its cable components under different running speeds, the interaction between the whole structure and its cables was considered by taking a railway low-pylon cable-stayed bridge with a main span of 115 m+95 m as ...
Abstract: In order to analyze the influence of frequency on suspender tension, a partial differential equation of motion is established for the suspender according to its vibration mechanical properties and dynamic equilibrium. Then, a computational formula for the frequency and suspender force is built takin...
Abstract: To clarify the fabrication errors' propagating properties in the construction control of a large-span cable-stayed bridge, the effect characteristics of the manufacture errors of key components during the whole construction procedure were investigated. An error propagation equation was developed bas...
Abstract: In order to reveal the characteristics of the peak acceleration at different depths of a slope and seismic landslide formation mechanism, a strong earthquake monitoring array was set up in both sides of the Lengzhuguan slope. Five strong vibrograph at different depths but the same altitude were trig...
Abstract: To investigate the seismic performances of irregular bridges, a seismic vulnerability model for a typical irregular highway bridge was created. By considering the uncertainties of an earthquake and bridge parameters, a model sample database was generated by adopting the sampling method to carry out ...
Abstract: In order to assess the seismic performances of high pier of concrete-filled steel tube (CFST) composite column, curvature was chosen as the performance indicator. The whole eccentric compression process for section samples of CFST composite column was simulated by the Latin hypercube sampling (LHS) ...
Abstract: To solve the problems of the great seismic force and poor anti-seismic performance of normal energy dissipation system of buckling restrained braces in high seismic regions, it was proposed to design two-stage energy dissipation system of buckling restrained braces. With reference to one engineering...
Abstract: In order to describe the characteristics of rock rheological deformation better, a generalized Kelvin creep damage model considering the deterioration effects in creep process was proposed, and its finite difference scheme was derived. Based on the interface platform of software FLAC3D, the model wa...
Abstract: In order to establish a practical parameterization calculation formula for the axial rigidity of a circular hollow section (CHS) Y-type joint, a semicircular arch model for Y-type joint rigidity was developed based on the round-direction model and the relationship between local deformation of a join...
Abstract: To effectively protect Chinese ancient timber buildings, bracket sets (tou-kung) of 1st eave of Taihe Palace in the Forbidden City were taken as an example to investigate the bearing performances of Chinese ancient liujin type of bracket sets under vertical loads. Based on constitution characteristi...
Abstract: In order to investigate the frequency-domain characteristic of reliability and the damping performance of a tuned mass damper (TMD) system, the probability distribution formula about the spectral moment of cut-off frequency of a structure under random excitations is derived based on the first-passag...
Abstract: Aimed at the route choice process integrated with the subjective perception and objective analysis that cannot be quantified, the intuitionistic fuzzy set theory is applied to quantify the selection results of route decision, in which the subjective and objective intuitionistic fuzzy numbers are con...
Abstract: To solve the problem with excessive trailers obstructing major traffic paths outside container terminals, a hybrid Petri net (HPN) model with optimal scheduling strategy is created by optimizing trailer arrivals using non-stationary Poisson distribution to simulate arrival pattern. It can be applied...
Abstract: In order to solve the puzzles existing in electronic voting, such as vote collision, the third party deceiving voters, relying anonymous communication channel to send votes and vote inefficiency, a secure and efficient electronic voting scheme was designed. The scheme, based on the principle of elec...
Abstract: To improve spectral efficiency of the cooperative communication system, the communication system with full-duplex relay was investigated. First, the conventional proactive opportunistic relaying and the optimal full-duplex relay selection were introduced. Then, an incremental full-duplex relay schem...
Abstract: In order to improve the test case generation efficiency of the CTCS-3 train control system, a test case automatic generation method is proposed based on formal models of hybrid communication sequential process (HCSP) and timed automata. Then, timing models for operation scenarios in the train contro...
Abstract: In order to alleviate the impact of forecast errors of renewable energy sources and loads on the active distribution scheduler and to solve the over-voltage problem caused by distributed generation (DG), a two-stage optimal schedule model was presented by integrating a day-ahead economic scheduler w...
Abstract: In order to study aerodynamic noise source distribution and frequency spectrum for the pantograph of high-speed trains, the flow field for the pantograph of high-speed trains was calculated using the computational fluid dynamics method, and the fluctuating pressure on the surface of the pantograph w...
Abstract: As China's high-speed railways enter into a comprehensive operation and maintenance period, many problems are exposed such as binary judgment of system and equipment states, fault diagnosis after fault occurrence and passive maintenance. To deal with these problems, the prognostics and health manage...
Abstract: To improve the efficiency and dynamic performance of fuel cell locomotives, a control-oriented thermal management model with a fan in the radiator and a coolant circulation pump was built by the law of mass conservation, the first law of thermodynamics, and the affinity law. Based on this model, the...
Abstract: In order to study the influences of the high order harmonics of traction network on three-phase power system, the harmonic model of impedance-matching balanced transformer was established to analyze the permeability characteristics of high-order harmonics for public grid high-voltage three-phase sys...