Abstract: In order to estimate the ultimate load of pile foundation by the strength reduction method, based on the Zeeman machine of cusp catastrophe, the bearing capacity functional of pile foundation and the theory of direct shear test the catastrophe's critical condition of bearing capacity of pile foundat...
Abstract: In order to study the bearing characteristics of the composite foundation with rigid-flexible and long-short piles under embankment loading, a field test of a foundation improved by the capped pre-stressed thin-wall concrete (PTC) piles and soil cement deep mixed (CDM) columns was conducted in a bri...
Abstract: The Chengdu metro line 2 partly passes through the complex strata of sandy pebble and expansive soil. In order to obtain the influence law of expansive force resulted from partial expansion on shield tunnel lining structure load in complex layers, the influence of partial expansion with various rang...
Abstract: In order to study the unsaturated characteristics of red clay, Geo-experts self-balanced pressure plate meter and ZJ direct shear apparatus were used in experiments to investigate the soil-water and shear strength characteristics of the typical undisturbed and remolded red clays under different dry ...
Abstract: In order to investigate the impact of reservoir water level fluctuation on the dynamic responses of groundwater seepage of landslide. The transient seepage of Shiliushubao landslide as a research object was discussed under five different water level fluctuation rates and different seepage coefficien...
Abstract: To discuss the effect of train axle load and speed on the dynamic characteristics of soil subgrade, a 3D dynamic simulation of the ballast track-subgrade system was made using ANSYS and FLAC3D. In the calculation process, the hysteretic damping was used to simulate the nonlinear characteristics of s...
Abstract: To investigate the reasonable pavement structure for rapid construction of emergency airfield, fatigue deformation characteristics of soil airfield pavement were researched respectively by manual loading method and electro-hydraulic servo fatigue testing machine. Through a full-scale model test, the...
Abstract: In order to research the dynamic responses of a super-long span suspension bridge with CFRP cables, a super-long-span suspension bridge with CFRP (carbon-fibre reinforced plastic) cables and having a span of 3 500 m was designed by taking a strait as engineering background. Based on the ANSYS softwa...
Abstract: To investigate the influence mechanism of axial force fluctuation on the seismic behaviors of steel box columns, the seismic behaviors of steel box columns under 5 patterns of eccentrically fluctuant axial force were numerically analyzed by finite element simulation. The influence rules of axial for...
Abstract: In order to study the influence of the seam between type Ⅰ slab ends and CA mortar on dynamic characteristics of rail, slab, and vehicle under high-speed train load, a vehicle-type Ⅰ slab track vertical coupling dynamic model was established. Through this model, the changes of evaluation indexes suc...
Abstract: To investigate the influence of random structure parameters on vehicle vibration responses, the random vibration responses of a vehicle system with uncertain parameters under random road excitations were investigated using a quarter-vehicle model. A dynamic model for the system was established. In t...
Abstract: In order to study the impact mechanism and design method for a derailed train impacting against adjacent structures that are applicable to Chinese high-speed train, the UK Railway Group Standards GC/RT5112 and International Union of Railways leaflet UIC777-2R are analyzed, which are the basis to dev...
Abstract: In order to solve the imbalance of DC bus capacitor voltages in the diode-clamped multilevel converter, a balancing circuit with two-layer auxiliary inductors was designed. With this circuit, the voltages of all the DC-side capacitors in the multilevel converter can be balanced by a simple control. ...
Abstract: In order to solve the problem that DC-DC converter switch has a large steady-state output voltage ripple in pulse train (PT) control, a variable width pulse train (VWPT) control method was proposed after analysis of the generating mechanism of large output voltage ripples. The VWPT control method is...
Abstract: To deal with the structuring element optimization of mathematical morphology filter, an optimization design method of mathematical morphology filter based on quantum genetic algorithm was proposed. The quantum genetic population was initialized according to the characteristic of mathematical morphol...
Abstract: To apply the complex-valued neural networks to pattern recognition, the dynamical behaviors of the equilibrium point of a class of complex-valued networks with mixed time delays were investigated. Assuming that the activation functions satisfy the global Lipschitz condition, some sufficient conditio...
Abstract: In order to deal with the tough problem of providing high accuracy and meanwhile achieving real-time tracking using Hough-based approaches under very limited samples for training, a Hough ferns based method was proposed for object tracking. This method uses the random ferns as the basic detector. It...
Abstract: To find out the solution for barrier-free design of passenger trains in China, three models were proposed by analyzing the passengers' special needs, including the demand model of passenger with reduced mobility, the accessible passageway model of coach, and the basic layout model of wheelchair acce...
Abstract: In order to analyze quantitatively the stability of parallel operation of diesel generator sets and monitor the state of generators being out of step during development of a simulator for the ship power system, calculation formulae for parameters of the swing angle were deduced. An on-line algorithm...
Abstract: The resource allocation problem in OFDM-based DF-Relayed link was formulated as a joint optimization of subcarrier pairing and power allocation while maximizing energy efficiency (EE) with both the minimum rate and the total transmission power constraints. It is proved that the optimal energy-effici...
Abstract: In order to determine the dependence direction of correlated failures in the reliability calculation of mechanical structural systems, a reliability variable determination model was established under a linear regression background according to properties of the linear dependent coefficient. Using th...
Abstract: In order to explore the corrosion law of large span bridge cables, cylindrical corrosion electrodes were prepared according to the actual corrosion state of bridge cable wires, and the electrochemical corrosion rate of the high strength-steel wires were investigated by orthogonal experiment design a...
Abstract: To verify the formulas of elastic radial stiffness and plastic limit pressure of stents, the conception of "planar stent cell" was proposed and a planar stent specimen was produced according to the real curved structure of an intravascular stent. Tensile experiments of "planar stent cell" were then ...
Abstract: In order to overcome the defect that the properties of the original system is changed in the process of chaos control with external excitation or damping, the OGY control method is combined with the pole placement technique of the linear control theory to establish a linear mapping. By applying the ...
Abstract: In order to evaluate the opening and closing states and fatigue properties of a new type of polyoxymethylene heart valve, accelerated fatigue tests were performed on the polyoxymethylene heart valve and an ON-X heart valve using the heart valve prostheses fatigue tester (TH-2200). The opening and th...
Abstract: To provide design basis for alignment parameters of different types of highways, the lateral accelerations, speeds, and trajectory curvature radii of passenger cars and buses on 12 highways having different design speed and topography were collected in field survey. The level of driving comfort on e...
Abstract: In order to improve the adaptability of terminal airspace and standard arrival/departure routes to real air traffic flows and their spatial distribution, a method for detection of main air traffic flows in massive flight trajectories was addressed. After analysis of the spatial characteristics of tr...
Abstract: In order to improve the trajectory prediction accuracy, a new four-dimensional aircraft trajectory prediction approach was presented, which was based on aircraft performance data and aircraft intent. Firstly, through statistical analysis of historical radar data about aircraft trajectories, an aircr...