西南交通大学学报

Review and Prospect of Structure Research of Underwater Shield Tunnel with Large Cross-Section

HE Chuan, FENG Kun

2011, 24(1): 1-11. doi: 10.3969/j.issn.0258-2724.2011.01.001

[Abstract](2172)

Abstract:

Comparison Research of Some Approximate Analytical Methods for Seismic Design of Circular Tunnel

YAN Qi-Xiang, MA Ting-Ting, WU Lin, HE Chuan

2011, 24(1): 12-17. doi: 10.3969/j.issn.0258-2724.2011.01.002

[Abstract](1936)

Abstract:
In order to cut down the complexity and workload of seismic analyses, three approximate analytical methods for seismic design of circular tunnels were discussed. The first one is based on the function of complex variable and improved by using shear stresses in strata gained by the vibration equation...

Pressure Distribution Model of Simultaneous Backfill Grouting of Shield Tunnel

YUAN Xiao-Hui, HAN Ru-Wang, ZHONG Xiao-Chun

2011, 24(1): 18-23. doi: 10.3969/j.issn.0258-2724.2011.01.003

[Abstract](1861)

Abstract:
In order to probe into the transfer process of grouting pressure in an annular tail void during the backfill grouting of a shield tunnel, rheological properties of cemented mortar were tested by rotary viscometer. The experimental result indicates that the cemented mortar is a Bingham fluid, and its...

Seismic Behavior of Low Masonry Structure with Core-Tie-Columns

ZHENG Ni-Na, LI Yang-Min, PAN Yi

2011, 24(1): 24-30. doi: 10.3969/j.issn.0258-2724.2011.01.004

[Abstract](1320)

Abstract:
In order to research the seismic behavior of core-tie-column, non-linear dynamic time-history responses of three types of two-story masonry structures with the same architectural layouts were analyzed. They are a masonry structure without restriction and two masonry structures with four core-tie-col...

Seismic Evaluation Method of Multi-storey Masonry Buildings Based on Earthquake Damage

SU Qi-Wang, SUN Yu-Peng, ZHAO Shi-Chun

2011, 24(1): 30-35. doi: 10.3969/j.issn.0258-2724.2011.01.005

[Abstract](1640)

Abstract:
In order to evaluate the seismic performance of existing masonry buildings rapidly, a seismic evaluation method for masonry buildings was proposed based on the theory of seismic evaluation of existing buildings in Japan. By taking the lateral bearing strength of walls and tie columns of every floor ...

High-Accuracy Continuous Function-Based Modification of Slope Mass Rating

ZHANG Ju-Lian, CHEN Meng-Rong

2011, 24(1): 36-41. doi: 10.3969/j.issn.0258-2724.2011.01.006

[Abstract](1218)

Abstract:
In order to raise fitting accuracy of the existing modified continuous functions for slope mass rating (SMR), based on the least-squares-fit algorithm, the table-form-rating SMR was modified by using new continuous functions. Continuous fitting functions of ratings for point-load strength, uniaxial ...

Measurement of Water Content of Multiple Geomaterials by Time-Domain Reflectometry Technique

CHEN Yun, CHEN Yun-Min, ZHOU Qun-Jian

2011, 24(1): 42-48. doi: 10.3969/j.issn.0258-2724.2011.01.007

[Abstract](1295)

Abstract:
In order to find a suitable method for measuring the water content of multiple geomaterials, an interaction model between electromagnetic wave and mixed media was built based upon polarization mechanism. The relationships between dielectric constant and each of material, porosity, and water content ...

Braking Forces and Displacements of Longitudinally Counpled Ballastless Welded Turnout on Bridges

REN Juan-Juan, WANG Peng, LIU Xue-Yi, LIU Jia

2011, 24(1): 49-55. doi: 10.3969/j.issn.0258-2724.2011.01.008

[Abstract](1606)

Abstract:
A finite element model of turnout-track slab-bridge beam-pier was established to analyze the forces exerted on ballastless track and welded turnout on bridge and their displacements under braking forces, in which a single crossover (composed of 2 sets of No.18 welded turnouts）, the longitudinally co...

Dynamic Responses of High-Speed Train-Track-Bridge System under Seismic Excitations

WANG Shao-Lin, ZHAI Wan-Meng

2011, 24(1): 56-63. doi: 10.3969/j.issn.0258-2724.2011.01.009

[Abstract](1909)

Abstract:
In order to analyze the effects of seismic excitations on the running safety of a high-speed train passing a bridge, a train-track-bridge dynamic model considering seismic loads was set up based on the train-track-bridge dynamic interaction theory. As an example, a simply supported beam with a span ...

Automatic Incident Detection Technology Based on SVM

CHEN Wei-Rong, GUAN Pei, ZOU Yuexian

2011, 24(1): 63-67. doi: 10.3969/j.issn.0258-2724.2011.01.010

[Abstract](1394)

Abstract:
In order to reduce traffic delays caused by traffic incidents, an new AID (automatic incident detection) algorithm, SVM-AID algorithm, was proposed based on support vector machines (SVM). Using actual traffic data of the I-880 database, the classification performance of the SVM-AID algorithm was tes...

Design and Realization of Security Monitoring System for Speed-up Railway Crossing

XU Zhi-Gen, CHEN Ji-Lan, YANG Xi-Ke, MENG Xin-Zhi

2011, 24(1): 68-75. doi: 10.3969/j.issn.0258-2724.2011.01.011

[Abstract](1377)

Abstract:
In order to improve the status of security monitoring when a speed-up train is passing through a railway crossing, a system for security monitoring and information management of railway crossings was designed and realized. This system adopts a wireless communication mode with a frequency of 150 MHz ...

Synthesis Optimization for Construction Project Based on Modified Particle Swarm Optimization Algorithm

WANG Weibo, FENG Quanyuan

2011, 24(1): 76-83. doi: 10.3969/j.issn.0258-2724.2011.01.012

[Abstract](1540)

Abstract:
A modified PSO (particle swarm optimization) algorithm—hierarchical subpopulation PSO（HSPSO) was proposed to avoid the premature phenomenon of the PSO algorithm during evolution. By using the strategy of subpopulation hierarchy, the algorithm can improve the convergence speed and accuracy. For the s...

Fault Diagnosis Method for Jointless Track Circuit Based on AOK-TFR

ZHAO Lin-Hai, MU Jian-Cheng

2011, 24(1): 84-91. doi: 10.3969/j.issn.0258-2724.2011.01.013

[Abstract](1458)

Abstract:
In order to make up for the shortcoming of the existing methods for compensation capacitor fault detection in both timeliness and cost aspects, a simulation model for induced voltage envelope of cab signal was proposed based on the transmission-line theory. On this basis, the influence law of compen...

Detecting High-Speed Maglev Line Irregularity Based on Intrinsic Mode Function Analysis

SU Yan-Chen, WU Chuan-Hui

2011, 24(1): 92-97. doi: 10.3969/j.issn.0258-2724.2011.01.014

[Abstract](1190)

Abstract:
In order to assess the track irregularity of maglev lines, an analysis was made of the practical data of track-inspection acceleration signals of a high-speed maglev train, which indicates that the longitudinal vibration acceleration signal of the train guidance system is most sensitive to the long-...

Handoff Algorithm for Hierarchical Cell Networks Based on Received Signal Strength and Power Loss

徐鹏, 方旭明, 杨俊

2011, 24(1): 98-102,108. doi: 10.3969/j.issn.0258-2724.2011.01.015

[Abstract](1903)

Abstract:
In order to settle the handoff problem resulted from deploying femtocell base stations in a macrocell, a new handoff algorithm for hierarchical cell networks was proposed. This algorithm makes a handoff judgment in light of signal strength received by users and signal power loss during transmission....

Grounding Effect of Integrated Grounding Wire for High-Speed Railway

GAO Guoqiang, DONG Anping, ZHANG Xueyuan, LEI Dong, WANG Bo, WU Guangning

2011, 24(1): 103-108. doi: 10.3969/j.issn.0258-2724.2011.01.016

[Abstract](1214)

Abstract:
In order to improve the utilization of integrated grounding wire (IGW), the inflences of its radius, buried depth, interval of transversal connections and soil resistivity on grounding effect were analyzed by taking IGW grounding impedance and shunting coefficient for rail current as the assessment ...

Numerical Analyses of Air Ionization and Breakdown of Short-Pulse High-Power Microwave

ZHAO Pengcheng, LIAO Cheng, LIN Wenbin, TANG Tao

2011, 24(1): 109-114. doi: 10.3969/j.issn.0258-2724.2011.01.017

[Abstract](1264)

Abstract:
In order to investigate air breakdown caused by short-pulse HPM (high-power microwave), the effective electric field, an important parameter for the calculation of ionization parameters, was obtained by solving the electron momentum equation for air. The effect of altitude on the air breakdown thres...

Sliding Mode Control of Acrobot Robot with External Disturbance

WANG Zhong-Hua, YANG Ji, CHENG Jin, ZHANG Yong

2011, 24(1): 115-120. doi: 10.3969/j.issn.0258-2724.2011.01.018

[Abstract](1315)

Abstract:
To increase the anti-disturbance ability of Acrobot systems, a dynamic model for the underactuated Acrobot system was built, and a silding mode control strategy for the system was proposed. In the strategy, the model in cascade normal form is expanded to the common form with disturbance term, and th...

Dynamic Responses of Shaft System of Hydraulic Generator Set with Coupling Faults of Bearing Looseness and Rotor Rub-Impact

HUANG Zhi-Wei, ZHOU Jian-Zhong, ZHANG Xiao-Yuan, WANG Chang-Jing, ZHANG Yong-Chuan

2011, 24(1): 121-126. doi: 10.3969/j.issn.0258-2724.2011.01.019

[Abstract](1351)

Abstract:
For the fault problems of the bearing looseness and rotor local rubbing caused by some nonlinear factors, a six-degree-of-freedom dynamic model for the hydraulic generator set with coupling faults of bearing looseness and rub-impact between rotor and stator was established, with the rigidity and dam...

Preparation of Cu2-xS Nanotubes and Their Surface Photovoltaic Properties

LIAO Xin, YANG Feng, PU Minghua, ZHAO Yong

2011, 24(1): 127-131. doi: 10.3969/j.issn.0258-2724.2011.01.020

[Abstract](1097)

Abstract:
In order to explore the photoelectric applications of CuS materials, copper sulfide (Cu2-xS) nanotubes were prepared via hydrothermal method. The structure and morphology of the Cu2-xS were characterized with X-ray diffraction (XRD) and scanning electron microscopy (SEM). The surface optoelectronic ...

Simulation and Experimental Investigation of Tortional Wear Corrosion at Constant Temperature

LIN Xiu-Zhou, CAI Zhen-Bing, HE Li-Ping, YI Jing-Hua, XIE Xin-Yuan, SHU Min-Hao

2011, 24(1): 132-137. doi: 10.3969/j.issn.0258-2724.2011.01.021

[Abstract](1320)

Abstract:
In order to reveal the wear and corrosion characteristics of metal materials under torsional contact in liquid medium at constant temperature, a new device for torsional wear corrosion test was developed. Using the test system, torsional wear corrosion tests of Ti6Al4V were carried out in saline sol...

Strength Calculation of Planar Double-Enveloping Hourglass Worm Gears

ZHANG Yan-Qin, ZHANG Guang-Hui

2011, 24(1): 138-142. doi: 10.3969/j.issn.0258-2724.2011.01.022

[Abstract](1655)

Abstract:
In order to simplify the calculation method for bearing capacity of planar double enveloping hourglass worm gears, a contact stress analytic formula for the worm drive was proposed through regression analysis and interpolation method based on the Hertz theory. The bending strength calculation formul...

Train Line Planning Model with Stochastic Stability in Passenger Flow Assignment Scheme for Passenger-Dedicated Line

PENG Qi-Yuan, JIA Xiao-Qiu, GUAN Xiao-Yu

2011, 24(1): 143-147. doi: 10.3969/j.issn.0258-2724.2011.01.023

[Abstract](1373)

Abstract:
In order to meet the requirements of mixed operation of trains with high and middle speeds on a passenger-dedicated line in China and increase the stochastic robustness of the train line planning system, a multi-objective expected value model for stochastic programming subjected to the carrying capa...

Optimal Model and Algorithm for Allocation of Arrival and Departure Trains in Railway Passenger Terminal

ZHAO Jun, LI Yu, REN Qiliang, PENG Qiyuan

2011, 24(1): 148-153. doi: 10.3969/j.issn.0258-2724.2011.01.024

[Abstract](1646)

Abstract:
To optimally allocate arrival and departure passenger trains among passenger stations in a railway terminal that connects high-speed and intercity passenger railway lines, a multiple-objective nonlinear mixed integer programming model was proposed. In the model, decision variables include distributi...

Seasonal Effects of Weather on Probability Distribution of Airport Arrival Capacity

ZHANG Jing, XU Xiao-Hao, WANG Fei

2011, 24(1): 154-161. doi: 10.3969/j.issn.0258-2724.2011.01.025

[Abstract](1688)

Abstract:
In order to study the effects of weather seasonal changes on airport arrival capacity distribution, the capacity probabilistic distribution of historical weather was obtained through statistical analysis of the original weather data. A periodic time-series model based on the capacity probabilistic d...

Probabilistic Methods for Airspace Sector Flow and Congestion Prediction

WANG Chao, YANG Le

2011, 24(1): 162-166. doi: 10.3969/j.issn.0258-2724.2011.01.026

[Abstract](1493)

Abstract:
In order to improve the accuracy of sector flow forecasting and diminish false congestion alerts, probabilistic models for sector entry time, sector transit time and sector exit time were established through analysis of the uncertain factors influencing air traffic operations. Then, a probabilistic ...

Trajectory Optimization Method of Aero-Gravity Assist Orbital Maneuver

ZHANG Wan-Li, WANG Chang-Hong, XIA Hong-Wei, XIE Wei-Nan

2011, 24(1): 167-174. doi: 10.3969/j.issn.0258-2724.2011.01.027

[Abstract](1488)

Abstract:
In order to achieve the orbit maneuver and save the fuel consumption in the space travel mission of spacecrafts, the dynamic equations and performance index functions of aero-gravity assist (AGA) maneuver were established under the terminal constraints and path constraints. The continuous two-point ...

Method for Congested Traffic Network State Analysis Based on Reasonable Routes

QI Hong-Sheng, WANG Dian-Hai, XU Cheng

2011, 24(1): 175-181. doi: 10.3969/j.issn.0258-2724.2011.01.028

[Abstract](1239)

Abstract:
In order to prevent the propagation of traffic jam throughout the road network, a traffic network analysis model is built, which is based on reasonable routes taking into account both the degree of saturation and the travel time. The uncongested zone out of the central congestion layer is classified...

Search Advance Search

Journal Search

Search Type

NewsMore

instruction for authors

Read this journal

LinksMore

2011 Vol. 24, No. 1