Advanced Materials Research Vol. 831

Abstract: In this paper, the use of multimodal transportation systems for Istanbul was reviewed. It was seen that there is a high imbalance towards the use of highway transportation. Especially, the marine and the railroad lines are underutilized and have not developed properly over the years. Due to extensive use of highway transportation, inter-and intra-city traffic experiences extensive congestions, delays, time and monetary losses. One of the bottlenecks of this congestion is at the Bosphorus Straight where there are two long span bridges. Recently, one of the bridges on the strait, Fatih Sultan Mehmet (FSM) Bridge, has undergone rehabilitation, thus offering reduced traffic capacity. This reduced capacity is taken partially by the other long span bridge (Bogazici Bridge) and partially by the marine transportation lines. In this paper, the traffic flow data before and after the FSM Bridge maintenance are presented along with the marine line data, especially for the redistribution of the traffic during the rehabilitation work at the FSM Bridge. It was concluded that with a well-developed and designed strategy, the marine lines can provide a more balanced modal distribution and more efficient transportation for the city of Istanbul.

Abstract: Electrified highway will continuously provide the grid electricity energy directly to power vehicles, also can recharge electricity to the batteries loaded on the running vehicles without stop. Power supplying system of the electrified highway could be laid overhead, sides or ground of the highway. Among the three layouts, the lateral collecting mode where the power supplying system is installed along with the highway buffer zone or fence is better than other two modes. In lateral mode various vehicles with different height could get electricity from the grid directly by the lateral collector extended from one side of the vehicle. The power vehicles with function to gather power from the power grid will lead the electric vehicle industry onto a correct way, and the lateral collecting mode is the prospective and representatives the right direction of power vehicles and electrified highway.

Abstract: This paper is based on one project of Metro shield tunnel across a high-speed railway bridge. In the study the impact of train operations is taken into account, the finite-element method is adopted to analyze effect of shield tunneling. The conclusions indicate that according to the different tunnels and relative positions of pile, the excavation of the tunnels would have different effects on pile foundation. When the construction of shield across the bridge, the nature of the soil and will have an effect on deformation and stress of pile. Due to tunnel excavation of bridge internal force on bridge attached to the forces of good roles and bad role. Additional deformation of the beams and the additional forces are very small, so they will not affect the bridge work.

Abstract: Aim at the characteristics of the mountain cities road traffic network, the short-time data signals in the congestion state of the road network traffic is analyzed. Fractal characteristics of traffic data signal is in research based on the self-similarity of the traffic data signals. The non-stationary property of the traffic flow signal in the congestion state is known through the calculation of the multifractal spectrum of the traffic flow signal based on EMD. The experimental results show the feasibility of the method, which also can provide theoretical support for the traffic flow control of the mountain city road network in the sub-health state.

Abstract: Shear failure is often found for masonry structure when subjected to complex loading. This paper presents the numerical analysis of shear strength test on triplet masonry specimens under different normal compressive stresses. Two different models were produced using a commercially available finite element analysis package ANSYS. The first model is a continuum model with the brick unit modeled as linear elastic material, while the mortar joints are modeled using a Drucker-Prager (DP) material or a concrete material. In the second model, the mortar joints as well as the brick/mortar interfaces were represented by a series of contact elements, and the Mohr-Coulomb failure surface was employed by these contact elements. Comparisons with the experimental results show that both models give satisfactory predictions for the maximum failure load, while the finite element model with interfaces has a better performance in terms of the load displacement response.

Abstract: Recently, the visualization technique of numerical construction data has become essential in construction industry due to the extended application of BIM (Building Information Modeling) and various IT technologies. To build and apply a BIM tool, the interoperability between different modeling systems is being an important item. Specially, in the field of civil engineering project, the development of IFC (Industrial Foundation Class) code for 3D CAD object is under the conceptual phase. This study introduces cases of developing active BIM functions and IFC code that applicable to road project and proposes how to enhance data inter-operability to utilize the functions in an integrated manner.

Abstract: This study aimed to apply low-cost interactive technology to home-based rehabilitation training for patients suffering from chronic stroke. It also focuses on discussing the results of the integration of interactive computer game training with home-based rehabilitation training in helping these patients. We conducted an experiment following the reversal design of single-subject research, in which a patient suffering with chronic stroke was given home-based rehabilitation training. In addition to interactive computer technology, the experiment also involved the adoption of a low-cost Wii Remote controller as an infrared receiver and a homemade infrared emitter supplemented by computer animation software to investigate the outcome of a home-based rehabilitation program. Data analysis is based on collection of points by the participant throughout the experiment and adopting visual analysis to discuss the outcome of interactive technology integrated with home-based rehabilitation. The results of this research show that the subject was able to stand on one leg for a few seconds longer than prior to the adoption of interactive technology integrated with home-based rehabilitation. Furthermore, parents of this patient and the therapists involved believe that the research and this innovative approach improved the patients performance in rehabilitation. The subject not only showed better motivation with regard to rehabilitation but also greater independence and enhanced capability of integrating into society.

Abstract: The interpolation algorithm in survey calculation is widely used in petroleum engineering, and it is different from the general mathematical interpolation. Along with the development of oil exploitation, various special type of well begin to appear, but the original interpolation method can not meet the needs of the field work. So the paper according to classical interpolation model of the interpolation algorithm, the three optimization intercalation models the curvature radius of curvature, minimum curvature, and natural curve were figured out. Theory analysis and results show that optimized interpolation formula the paper established can meet all kinds of optimization calculation of the inclined interpolation needs.

Abstract: Critical velocity is a very important parameter in smoke control of tunnel fires and the variation of critical velocity against fire heat release rate is also one of the most important issues in tunnel fire researches. In this paper, a simplified physical model of a tunnel was established and the predictions of critical velocity for fire sizes in the 5-100MW range were carried out by FDS simulations. The FDS-predicted dimensionless critical velocities were compared with the values calculated by Wu and Bakar’s model. The result indicated that when the heat release rate was relatively small, Q≤30MW, the critical velocity increased with the increasing of heat release rate and varied as the one-third power of the heat release rate; when Q≥40MW, the growth rate of critical velocity became very small; after Q reach to 60MW, the critical velocity was almost unchanged with the increasing of heat release rate. In addition, the values of critical velocity calculated by Wu and Bakar’model which was derived from small-scale gas fire tests were underestimated. Therefore, the model suggested by Wu and Bakar is not suitable for critical velocity prediction in tunnel fires.

Abstract: In the speech emotion recognition process, How to obtain effective characteristic parameters from the emotional data including the noise is one of the significant and difficult problem. This paper first removes the gauss white noise with the adaptive filter. Then the Mel Frequency Cepstrum Coefficients (MFCC) based on Empirical Mode Decomposition (EMD) is extracted and with its difference parameter to improve. At last we present an effective method for speech emotion recognition based on Fuzzy Least Squares Support Vector Machines (FLSSVM) so as to realize the speech recognition of four main emotions, i.e, anger, happy, surprise and natural. The experiment results show that this method has the better anti-noise effect when compared with traditional Support Vector Machines (SVM).