To improve the operation efficiency of wagon flow at railroad terminals with multiple marshaling stations, firstly based on the analysis of different types of wagon flow operations at the terminal, the mathematical model is constructed with the goal of minimizing the total costs of wagons entering a...

With the increasing penetration of carsharing, vehicle overflow and congestion propagation at the level of station and path tend to be serious. In order to describe the influence mechanism of congestion propagation on the operation of carsharing systems, firstly, a queuing network of the carsharing ...

A large number of large-span prestressed concrete (PC) continuous rigid-frame bridges (CRFBs) have been built in China with heights of piers up to 100 m or more. They are likely to suffer strong earthquakes, especially in high seismic risks areas of Western China. The main girder and piers are rigid...

In order to study the influence of transverse asymmetrical load on the mechanical characteristics of long-span cable-stayed bridges, this paper takes the Changtai Yangtze River Bridge as the engineering background and analyzes the mechanical characteristics of the bridge with a transverse asymmetric...

To study the influence of the maintenance rail position and the guide vanes on the vortex-induced vibration (VIV) performance of the wide flat box girder section, the Lingdingyang Bridge (a long-span suspension bridge with wide flat steel box girder) is taken as an example. The VIV of the main girde...

In order to study the seismic performance of low-yield-point corrugated steel plate shear walls (CSPSWs), a new type of lateral-resistant load system, the finite element software ABAQUS was used to numerically analyze the seismic energy dissipation behavior of 16 CSPSWs under lateral monotonic and c...

Since U-shaped steel sheet piles (USSSPs) are prone to buckle, a dynamic coordination coefficient method for theoretically calculating the local stiffening effect of USSSPs is proposed, and a formula for calculating the critical buckling load of locally stiffened USSSPs is established. The influence...

Due to the requirements for the appearance of civil buildings and the production process of industrial buildings, abnormal internal joints may be formed in the partially-encased steel-concrete composite structures due to misalignment and change of beams and columns. In order to investigate the shear...

In the discrete element numerical simulation, different sample preparation methods will lead to differences in soil void ratio and uniformity, which will affect the simulation results of bearing capacity of shallow foundation. Therefore, it is necessary to analyze the influence of different sample p...

The coupling effect of slurry and soil stress has a significant influence on the slurry diffusion law of split grouting, which should be fully considered in the design phase of split grouting. The split grouting is regarded as a circular expansion process in an infinite plane domain. Based on the Ne...

To study the mechanical properties and energy evolution law of red-bed mudstone, five different confining pressure gradients (200, 250, 300, 350, and 400 kPa) and different rate stress paths between the axial and confining pressures are used to perform indoor cyclic loading and unloading tests, taki...

In view of the risk of excessive surface uplift in rectangular pipe jacking construction under the condition of shallow-buried soil, the finite element software MIDAS GTS was applied to simulate the dynamic process of large-diameter rectangular pipe jacking, and to explore the law of surface uplift ...

In order to scientifically address the uncertainty caused by material properties and complex geological environments in tunnel engineering and make the support design more safe and reasonable, a tunnel reliability design and calculation method based on reliability theory is proposed. Firstly, accord...

In order to solve the key technology of oxygen supply in high-altitude tunnel construction, the influence of oxygen supply concentration and labor power on labor intensity in a high-altitude tunnel is studied. Through field measurement in Guigala Tunnel in Dazi District, Lhasa, Tibet, the average en...

In order to adapt to the large-scale construction of urban rail transit and meet the needs of vibration reduction, a new type of prefabricated ballastless track structure is proposed. The vehicle ballastless track coupling dynamic analysis model and indoor full-scale test model are established to st...

In order to explore the bonding and anchoring performance of the reinforced concrete-filled steel tube (R-CFST) under cyclic loading, monotonic loading and cyclic loading tests were carried out on R-CFST specimens. The monotonic loading test is used to compare and analyze the response relationship b...

To avoid frost damage problems in cold regions tunnels, a solar shed was introduced as one of the insulation measures. First, a three-dimensional transient heat transfer numerical model was established to obtain the tunnel temperature field under natural ventilation, and the reliability of the numer...

To explore the influence of the braking structure/track structure on the frictional self-excited vibration of the wheelset−track−brake system on braking sections of high-speed trains, firstly, combined with on-site investigation, the finite element model of the wheelset−track−brake system of CRH3 hi...

Aiming at the increasingly serious problem of high-order wheel polygonal wear, based on the wheel-rail system rotor dynamics model, wheel-rail contact model and wear depth model, the generation and evolution model of wheel polygonal wear is established. By analyzing the variation of speed and wheel ...

To realize the condition-based maintenance of rail corrugation in a data-driven way, a time-space intensive measurement method of rail corrugation is proposed. First, the intelligent terminal is used to detect vibration and noise at a car body of the train formation, the acceleration waveforms in th...

The product quality of batch process is closely related to the process characteristics or the process reaction principle. In order to solve the problems of multistage, time sequence and dynamics of batch process data, a multistage quality prediction method based on nonlinear autoregressive with exog...

The implementation of the national strategy, actively addressing population aging, has underscored the importance of paying attention to the older adult population, which has become a crucial demographic group. Previous research has predominantly assumed that the effect of the built environment on t...

To enhance the ability of automated theorem provers to select relevant premises from large-scale premises of first-order logic problems, a symbol weight calculation formula is first proposed, obtaining various weights corresponding to different symbols based on the frequency of symbols in the proble...