• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database

2010 Vol. 23, No. 1

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State of Arts of Research on Rail Grinding
JIN Hua-Song, DU Xing, GUO Jun, CUI Da-Bin
2010, 23(1): 1-11. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1628) PDF 1653KB(1035)
Abstract:
A detailed introduction to the existing theories and techniques of rail grinding and their application practices was presented. The interactions between rail grinding and rail rolling contact fatigue, railwear, noise and rail lubrication, aswell as theirmodels, were discussed. Based on the existing ...
Influences ofW heelsetM isalignment on Running Safety ofRailway Vehicles
ZHANG Wei-Hua, CHE Mao-Ru, JIN Hua-Song, Shu-Min-Hao
2010, 23(1): 12-16. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1304) PDF 739KB(683)
Abstract:
To investigate the influencesofwheelsetmisalignmenton running safety of railway vehicles,a dynamic vehiclemodelwithwheelsetmisalignmentwas setup. As an example of a high-speed train running on the tangent track, the influences ofwheelsetmisalignment on running safetywas analyzed by simulation. Analy...
M ixed FEM ofB-SplineW avelet on Interval for Beam Structures
GUO Shi-Wei-, Lin-Jian-Hui
2010, 23(1): 17-22. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1442) PDF 709KB(578)
Abstract:
A mixed finite elementmethod (FEM) of B-spline wavelet on the interval (BSWI) for beam structures was proposed based on the generalized variational principle of beam structure and interpolation ofBSWI, and general equations for solving static problem, vibrationmodal problem and stability problem of ...
Current Properties ofW ire ElectricalDischarge M achining ofP-Type Solar Silicon
QIU Meng-Bei-, Liu-Zhi-Dong-, Hong-　Wei-, Tian-Zong-Jun-, Huang-Yin-Hui
2010, 23(1): 23-27. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](726) PDF 917KB(452)
Abstract:
In order to improve the efficiency ofwire electricaldischargemachining (WEDM) of solar silicon, a diode-resistance (DR) circuitmodel forP-type solar siliconWEDM was created to analyze the currentproperties under constantvoltage power supply. Theoretical analysis reveals that the circuit current is d...
Key Technologies in H igh-Speed Railway TurnoutDesign
Wang-　Beng, CHEN 　Rong, CHEN Xiao-Beng
2010, 23(1): 28-33. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1501) PDF 906KB(825)
Abstract:
Based on the wheel/railmulti-point contact in turnout zone, a dynamic design theory for high-speed railway turnoutwas established and several creative designsweremade, such as separated semi-tangent switch plane linetype, horizontal hidden nose structure of turnout frog, short transitional top surfa...
Crack CalculationM ethod and Influence Factors for Continuously Reinforced Slab
Lin-Juan-Juan, LIU Hua-Yi, DIAO Ping-Dui
2010, 23(1): 34-39. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1326) PDF 762KB(648)
Abstract:
In order to research the development mechanism of cracks in continuously reinforced concrete slab of twin-block ballastless track, a theoreticalmodelwas put forward based on the bond- slip constitutive relation between steelbars and concrete. Crackwidth, crack space and steelbarstress were calculate...
Influence of SteelArch Corrosion on Security of Supporting System of Sub-sea Tunnel
WANG Meng-Nian, LI Hai-jun, ZHOU Guo-jun
2010, 23(1): 39-44. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1158) PDF 735KB(718)
Abstract:
To raise the supporting system security of large cross-section sub-sea tunnels, FEM (finite elementmethod) wasused to analyzeXiamen sub-sea tunne.l The effects ofsteelarch corrosion on the load-bearing capacity of steel arches and the securities ofpreliminary lining and secondary liningwere investig...
Influence ofM etro Tunneling in SoftC lay Strata on Underground Pipeline
QI Tai-Yue-, Gao-　Bei-, Tan-Dai-Meng
2010, 23(1): 45-53. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1270) PDF 1349KB(673)
Abstract:
To reduce the influence ofground surface subsidence caused bymetro tunneling in softclay strata upon underground pipelines, the numerical simulationmodel in software FLAC3Dwas applied to compare three tunneling methods, .i e., pumping, dynamic pumping and un-pumping tunneling methods, through consid...
Quantification of Seism ic Performance Levels for Urban Viaduct
LIU Yan-Hui, Diao-Shi-Chun, Jiang-Shi-Zhong
2010, 23(1): 54-59. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1421) PDF 724KB(711)
Abstract:
By taking a urban viaductas the research objectand on the premise of the determinationsof performance levels ( integrity, almost integrity, slightdamage, oderate damage and serious damage) and performance indexes (damage index expressed by the displacement ductility coefficient of bridge pier top), ...
Image ObjectDetection inM onitoring ofPantograph Slippers
Chen-Wei-Rong, FENG 　Qian, ZHANG 　Jian, XU Guo-Wang, LI 　Zhe
2010, 23(1): 59-64. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1203) PDF 1375KB(728)
Abstract:
Digital image process technique was used to monitoring of pantograph slippers, and the work principle and structure of a pantograph swireless image monitoring system were introduced. An image object detection algorithm for pantograph slippers, composed of rough detection and exact detection, was pro...
Networked Control System s Based on New Sm ith Predictor
Du-　Feng, JIAN Qing-Quan, DU Wen-Cai
2010, 23(1): 65-70. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1218) PDF 657KB(488)
Abstract:
In order to effectively restrain the influence of network delays on the performance of networked control systems (NCS), a new Smith predictorwith regard to the delays of network and controlled plantwas proposed. This new Smith predictordoes not include predictionmodels ofnetwork delays, and network ...
Multi-objective Train Operation Optim ization Based on Particle Swarm Algorithm
Tu-　Jin, HE Zheng-You, JIAN Qing-Quan
2010, 23(1): 70-75. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1966) PDF 859KB(740)
Abstract:
To reveal the essence ofmultiple objectives of train operation, amulti-objectivemodel for train operation was established and solved by using the multi-objective optimization method. Improvement and keeping diversity strategies were introduced to overcome the deficiencies of the existingMOPSO (multi...
MulticastQoS Routing Technology Based on Fixed-Length Frame
HONG Hai-Ying, CENG Hua-Shen, LI 　Ji
2010, 23(1): 76-81. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1098) PDF 895KB(597)
Abstract:
To effectively utilize network resources and balance the load, amulticastmechanism based on a fixed-length physical framewasproposed, and aQoS (quality ofservice)-awaremulticastrouting algorithm was designed, named as MRBP (multicast routing load-balancing algorithm based on Ethernet-oriented physic...
Listless Image Coding Algorithm Based on Region of Interest
BO 　Bei-, Yang-Gen-Qiang-, Sun-　Ning
2010, 23(1): 82-86. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](899) PDF 1221KB(500)
Abstract:
To reducememory requirementof the ROI (region of interest) coding algorithm based on lists, a new ROI coding algorithm based on listless zero-tree was proposed. In the process of SPIHT (set partitioning in hierarchical trees), signed bit planes are used to record the significance information ofcoeff...
Impact of Integrated GroundingW ire on Traction Return Current in Direct Power Supply System
DONG An-Beng-, Zhang-Xue-Yuan-, Deng-Meng-Li-, Chen-Ji-Gang-, Tun-An-Ning
2010, 23(1): 88-94. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1149) PDF 795KB(531)
Abstract:
In order to investigate the distribution of traction return current for high-speed and heavy-load railways, the equivalent impedances of rail and integrated grounding wire were calculated by analyzing their electrical circuits. W ith the equivalent impedances, the ratio of traction currents in the r...
Multi-constrained Routing Algorithm Based on M obile Agent forM obile Ad Hoc Networks
Zhang-　Yi, FENG 　Li, CHEN 　Wei, ZHANG Xiu-Mei
2010, 23(1): 94-98. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](873) PDF 743KB(480)
Abstract:
In order to solve the problem with the constraints of energy and available bandwidth, a routing algorithm based onmobile agentswas proposed. Itusesmobile agents to collect the information ofallmobile nodes. This algorithm has a strong routing stability because itselects linkswith the largest link ex...
Principle Analysis and Implementation ofVoltage Control of Hybrid Excitation SynchronousGenerator
FU Xin-He, JU Ji-Bin, JI Wen-Juan
2010, 23(1): 99-104. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](996) PDF 707KB(539)
Abstract:
A novel hybrid excitation synchronous generator (HESG) was developed to solve the problem that the output voltage is uncontrollable in permanentmagnet generator. The magnetic flux distribution of both the permanent magnet section and the excitation section in the HESG were computed using finite elem...
M odel and Algorithm for Taking out and Placing inW agons in Shunting Operation on RadialPrivate Lines
王慈光
2010, 23(1): 104-111. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1053) PDF 867KB(607)
Abstract:
To find the reasonable sequence, momen,t and batch number of taking out and placing in wagons in shunting operation on radial private lines, a model forwagonstaking-out and placing-in operation on radialprivate lineswasbuiltby combining qualitative and quantitative analysis. Then, the methods to con...
Fleet Planning Approach Based on Optim ized FleetCapacity Allocation in Airline Networks
Sun-　Hong, ZHANG Pei-Wen, HONG 　Yu
2010, 23(1): 111-115. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](2109) PDF 680KB(702)
Abstract:
The proposed approachwasbased on predicted statisticsofairline transportproduction, and its optimization objectivewas tomaximize the profit of airline companies. Fleet capacity allocation on each air route was optimized considering the technical and economic properties of each airplane type and traf...
Risk Analysis ofFlightConflict in Low Altitude Airspace
WANG Shi-Jin, DUO 　Dong
2010, 23(1): 116-123. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1049) PDF 983KB(857)
Abstract:
In order to determine the safe separation and risk probability of aircrafts in low altitude airspace, a collision avoidancemathematicmodel foropposite and intersecting flights at the same level was builtunder the constraints of flight rules, visibility requirements, response time, aircraft speed, an...
M odified BPR Functions for TravelTime Estimation of Urban ArterialRoad Segment
JIANG Gui-Yan, Li-Ji-Wei, Zhang-Chun-Qi
2010, 23(1): 124-129. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1040) PDF 935KB(521)
Abstract:
To increase the estimation accuracy of average travel time for urban arterial roads, three kinks ofmodified BPR functions, namely accumulative volume BPR functions for general states, BPR functions specially calibrated for a given state and accumulative volume BPR functions for a given state, were p...
Beeline Bus Stop Type Selection Based on Analysis of Influence on Traffic Flow
HU Wen-Ting, CHEN 　Jun, MO 　Xia
2010, 23(1): 130-135. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1035) PDF 795KB(493)
Abstract:
For type selection ofbeeline bus stop, the influences ofvirtual-bay bus stop (.i e., a bus stopwith reverse harboron line) and common beeline bus stop on traffic flowwas compared according to the investigation data from a bus stop in Nanjing in terms of the influential factors such as traffic load, ...
Calculation of Speed Lim it on Foggy Days
SHI Gui-Fang-, Yuan-　Gao-, Cheng-Jian-Chuan
2010, 23(1): 136-140. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1248) PDF 580KB(708)
Abstract:
Experiments were conducted with professional equipments atmotordrome to acquire the braking characteristic data ofdriverswhomeetunexpected obstacles. The results show thata braking- reaction time of2. 0 s in good road traffic conditions and 2. 5 s in general road traffic conditions satisfy mostdrive...
Nonlinear Control for Ship Course-Keeping Based on Lyapunov Stability
ZHANG Xian-Ku
2010, 23(1): 140-143. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1085) PDF 525KB(530)
Abstract:
To simplify the design process ofnonlinear controller for ship course-keeping, a Lyapunov energy function was derived. The simplified design process reduces 2 design steps into 1, has less parameters to be tuned, and avoids canceling the nonlinear items. The simulation researchwas carried outby taki...
Design and Realization ofAssessment System for G iant Panda sHabitat
YANG Wu-Nian, XIE Hong-Bin, JIAN 　Ji, NA 　Xi
2010, 23(1): 144-149. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](832) PDF 1337KB(504)
Abstract:
TheWenchuan earthquake led to serious damage to the ecological environment of giant pandas habitat in the western Sichuan Plateau. For scientific, fast and real-time assessment of giant pandas habita,t an assessment system, based on the landscape ecology and spatial analysis, was represented to esti...
M odified GPS AmbiguityW hite-Filtering Algorithm
HUANG Zhang-Yu, CHEN Su-Juan
2010, 23(1): 150-155. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1183) PDF 874KB(451)
Abstract:
In order to improve the decorrelation ofGPS (global positioning system) ambiguity, the white-filtering decorrelation algorithm wasmodified on the basis ofanalyzing the existingwhite-filtering decorrelation algorithms. In this modified algorithm, sequencing of elements in the ambiguity covariance mat...
Determ ination ofNitrite with FI-Spectrophotometric Analysis
Gong-Zheng-Jun, CHEN Guo-He, XIAO Xin-Feng, ZHANG Xin-Shen
2010, 23(1): 156-159. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](766) PDF 584KB(422)
Abstract:
A new flow-injection catalytic kinetic spectrophotometric method was proposed to rapidly determinate trace amounts ofnitrite. The proposedmethod is based on the accelerating effectofnitrite on the reaction between potassium chlorate andmethylene blue in strongly acidicmedia and combines the flow inj...
Experimental Study on Leachate TreatmentUsing Sem i-aerobic Aged Refuse Bioreactor
ZHANG Ai-Beng-, Liu-　Dan-, Liu-　Yong-, Wang-Yu-Qi
2010, 23(1): 160-165. doi: 10. 3969/.j issn. 0258-2724. 2
[Abstract](1012) PDF 915KB(439)
Abstract:
A semi-aerobic bioreactor, filled in with aged refuse in a laboratory, was used to treat leachate by once injection. As a resul,t in the case of a hydraulic load of40 L/d, a COD (chemical oxygen demand) organic load of480 g/d and an ammonia nitrogen (NH3-N) load ofabout12 g/d per cubicmeter aged ref...

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