• ISSN 0258-2724
  • CN 51-1277/U
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2000 Vol. 13, No. 4

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Calculation of Reliability Index and Resistance Partial Coefficients of Bored Pile Ultimate Bearing Capacity
LUO Shu-xue
2000, 13(4): 261-265.
[Abstract](1344)
Abstract:
Based on treatment and analysis of the testing data of piles, a formula for calculatingthe ultimate bearing capacity of bored piles is proposed by employing the reliability principle and analysis method for piles. Resistance partial coefficients of piles are determined by computation, and the comput...
An Introduction to Hopf Algebras, Yang-Baxter Equation and Quantum Groups
WANGMing-yi
2000, 13(4): 325-329.
[Abstract](1172)
Abstract:
It is well known that Hopf algebras, Yang-Baxter and quantum groups are three main research directions in modern mathematics and come fromthree different disciplines. In this paper, the development of Hopf algebras, the origin of Yang-Baxter and the prevailing of quantum groups are introduced. In ad...
Dynamic Response Features of High-Speed Track in Frequency Domain
LIUXue-yi, WANG Pin
2000, 13(4): 335-339.
[Abstract](1416)
Abstract:
According to the action properties of high-speed wheel/rail system, an analysis method is developed for studying the dynamic responses of high-speed track in frequency domain. The features of dynamic responses in frequency domain of high-speed track are investigated, and the influences of the track ...
Analysis of Three Dimensional Elastic-Plastic Stresses of Rail under Non-Ellipse Contact Area
LUHui, SUNGuo-ying
2000, 13(4): 340-343.
[Abstract](1478)
Abstract:
The calculation of wheel/rail contact stresses is an important project in wheel/rail relations. In this paper, a model forwheel/rail with arbitrary profiles contacting in an arbitrary point is built to calculate contact area and contact surface stresses. Then bytakingthe calculated surface stresses ...
Simulation Calculation of Lateral Impact Force Acting on Guard Rail while Passing Through Turnout Zone on the Side-Way
RENZun-song, ZHAI Wan-ming, WANG Qi-chang
2000, 13(4): 344-347.
[Abstract](1394)
Abstract:
Using the flange clearance and the wheel/rail dynamical clearance, a method is presented to calculate the lateral impact force acting on the guardrail. Based on a vehicle/turnout spatial coupled vibration model, the dynamic responses of the guardrail are calculated by simulation when the vehicle pas...
Study on Nonlinear Wind Resisting Static Stability of Catwalk of Suspension Bridge
ZHENG Shi-xiong, ZHOUShu-hua, LIAOHai-li
2000, 13(4): 348-451.
[Abstract](1755)
Abstract:
By measuringthe static aerodynamic coefficients of the three components of forces through section model test and taking into account the components of the displacement-dependent wind load and geometric nonlinearity, the authors of this paper propose a nonlinear finite elementmethod (FEM) to assess t...
Structural Behavior Nonlinear Analysis of Tied Arch Bridge with Concrete-Filled Steel Tubes During Construction
ZHAOLei, BUYi-zhi
2000, 13(4): 352-356.
[Abstract](1433)
Abstract:
Being aimed at the third bridge over Fu river in the city of Mianyang, Sichuan, a tied arch bridge with concrete-filled steel tubes andwith a main span of 202 m, a 3-dimensional compound structural calculation model constructed by flat shells, beams, trusses and rope elements is used to analyze the ...
A New Type of Bridge Plate Rubber Support Resistant to Lateral Displacement
ZHENG Zhi-ou, ZHENG Shi-ying
2000, 13(4): 357-360.
[Abstract](1156)
Abstract:
Bridge plate rubber support has many advantages. However, its lateral displacement is considerable for bridges on high-speed railways, which is a hidden danger in train driving. In this paper, a new material and a newconcept are used, thus the compression stiffness and longitudinal shear stiffness c...
Reliability Analysis of the Pile Shaft of Bridge Pile Foundation Structure System
WANSi-ming, ZHAO Shan-rui, HUANG Guang-sheng
2000, 13(4): 366-370.
[Abstract](1528)
Abstract:
Based on the analysis of pile shaft load and resistance uncertainty, the reliability indices of pile shaft members are calculated. According to the minimum reliability index prescribed by design, the critical value of the pile slender ratio is determined.
Study on Resistance Partial Coefficients of Piles
PENGXiong-zhi, ZHAO Shan-rui, LUO Shu-xue
2000, 13(4): 371-374.
[Abstract](1074)
Abstract:
According to the statistics of resistance in 78 bored piles and 128 drilled piles, the resistance partial coefficients of the bored piles and drilled piles are studied using calibration method. Results show that the partial coefficient of the main resistance is affected greatly by its distribution t...
On Construction of Continuous Operation Reference System for Differential GPS Satellite Navigation and Positioning
HUANGDing-fa, DINGJian-wei, XIAJie
2000, 13(4): 375-378.
[Abstract](1307)
Abstract:
Establishing a continuous operation reference system (CORS) for satellite navigation and positioning is the inevitable tendency in further developing and exploring GPS technique application. This paper mainly describes the structure and technical indexes of CORS, and analyzes critical techniques of ...
The Prerequisite to Investment in High-Speed Railway in the View of Market Demand
LIUWan-ming
2000, 13(4): 379-382.
[Abstract](1622)
Abstract:
The author uses utility theory and multiple object decision making approach to analyze the choice behavior of the individual, then establishes a model to research the passenger traffic market shares of three travel modes, in which the travel distance and the value of time (VOT) are included as varia...
Technical Evaluation for Urban Rail Transportation Networks
WANG Zhong-qiang, YANQi-peng, GAO Shi-lian
2000, 13(4): 383-386.
[Abstract](1404)
Abstract:
Evaluation for urban rail transportation networks (URTN) includes three main points: financial analysis, national economic analysis and technical evaluation. Since URTN is different from other urban transportation modes, this paper mainly dealswith the systemofURTNtechnical evaluation indexes. Using...
Research on Optimum Computer Networks Design
LI Cheng-Zhong, DENG Chao-jian, LIAng
2000, 13(4): 387-390.
[Abstract](1419)
Abstract:
Because of the technique progress in computers and the quick development in communication networks, the optimum design of the link capacity has become a key problem in the computer networks. In this paper, a method for the optimum design of the computer networks link capacity is proposed, by which t...
Study on the Signal Communication System of Maglev Trains
YANGJian-yong, LIANJi-san
2000, 13(4): 391-394.
[Abstract](1197)
Abstract:
The composition, functions and realization method of the signal communication systemforMaglev trains are discussed. In viewof the characteristics ofMaglev trains, the data flowof the system is analyzed, inwhich the emphasis is given to the data exchange between the facilities in the vehicle and thos...
The Structure and Performance of High Rate Turbo-Codes
ZHANG Zhong-pei, JINFan
2000, 13(4): 395-398.
[Abstract](1268)
Abstract:
There are multi-dimension and punctured methods for constructing Turbo-codes. The interleave design and punctured matrixstructure in constructingTurbo-codeswith the punctured method are discussed. Through the analysis of the free distances and decoding of high rate Turbo-codes constructed by the abo...
Nonlinear Dynamic Analysis for Railway Freight Cars
ZENGJing, WANG Yong
2000, 13(4): 399-403.
[Abstract](1655)
Abstract:
The concepts of linearity, nonlinearity and real critical speeds for railway vehicles are introduced in the first part of this paper. Then a nonlinearmathematical model for a railway freight carwith 31 degrees of freedom is set up, inwhich the nonlinearity arising fromthe friction forces andwheel/ra...
Recursive Identification Methods for Control Model of Tilting Car Body Test Rig
YANGMing-li, ZHANGHan-quan
2000, 13(4): 404-408.
[Abstract](1572)
Abstract:
Based on the general I/Omodel structure, an off-line identification of the lowfrequency dynamic features of a tilting car body test rig is studied using four different parameter evaluation methods. The accuracy of the obtained model is proved through comparing the I/O results in model simulation wit...
Study on Polaron Properties in Asymmetric Double Heterostructure of Semiconductors
WENCheng-zhong, JIANG Guang-zuo
2000, 13(4): 409-412.
[Abstract](1015)
Abstract:
The polaron ground state in asymmetric double heterostructure (ADHS) is studied. Using perturbation method, the binding energy and effective mass of a polaron are calculated and expressed as the functions of the width of the center layer. In considering electron-phonon interactions, both the confine...
A Study on Correlation Searching System for the Laws and Regulations in Railway Transportation
JIANGNan, TANZhong-ping, HEFu
2000, 13(4): 413-416.
[Abstract](1317)
Abstract:
The computer management and consulting system for railway transportation laws and regulation is studied in depth. The concept of”meaning cluster”is put forward, and the correlation is mathematically defined. On this basis the mathematics model and data structure of correlation searching for computer...
A Method for Integer Programming Problem by Theory of Groups
LIQing-song, ZHOUShuang-gui, DUWen
2000, 13(4): 417-420.
[Abstract](1285)
Abstract:
There are so many methods for the problem of integer programming (IP); however, available methods connected with theoryofgroups are still given little consideration. This paper, in orderto predigest the process of solving the IP problem, attempts to divide the IP problem into a series of simple mode...
Analysis of Organization Mechanism and System of Human Error in Enterprises
YUANXu, WUZhen-ye
2000, 13(4): 421-424.
[Abstract](1159)
Abstract:
Based on investigation and analysis of the safetymanagement status quo of enterprises, the safety managementmechanism mode for enterprises is set up. The internal and external conditions of the mode operation, change and conversion are analyzed, and the main characteristics ofthe preferable mechanis...
A Global Saturation Theorem for the Mixed Exponential Type Integral Operators
TIANJun, PENGJian-hua
2000, 13(4): 430-433.
[Abstract](1033)
Abstract:
A general exponential type integral operator, called mixed exponential type integral operator, is introduced, and the properties of this type of integral operator are studied. Based on the improved Bajsanski-Bojanic parabolic method and the related properties of integral operators, a global saturati...
A Fuzzy Control Method for Compelling Stable Strategy
ZHAOHai-liang
2000, 13(4): 434-439.
[Abstract](1454)
Abstract:
Based on the varying trend of the on-line identification controlled object’s output state, a new approach to compelling stable control strategy is presented. It can eliminate the oscillations of the conventional fuzzy logic controller, whichoften occurwhen the systemparameters change. In addition, s...
The Stability of a Nonautonomous and Nonlinear System
LIUChang-dong, YUXiao-hua
2000, 13(4): 440-443.
[Abstract](1306)
Abstract:
The stabilitytheoryof a kind of nonautonomous and nonlinearsystem is discussed usingthe scalar quantity functionV(Liapunov) forthe decomposition theoryof large systems. The sufficient condition ofthe asymptotic stabilityof the system is obtained, and in the meantime, a corollary forthe asymptotic st...
Study on the Relationship among Geometric Quantities of Riemannian Monifolds
GUO You-rui, SHUAIBin, LIUHai-yan
2000, 13(4): 444-446.
[Abstract](1170)
Abstract:
To study the relationship among geometric quantities (the curvature, the diameter and the volume) ofRiemannianmonifolds is a significant project in geometry. As to the questionwhetherthe volume V(M)has a positive lower bound for them-dimensional Riemannian monifoldsMsatisfying that the curvatureK(M)...
Researches on the Comparing-Mapδon the Symbolic Space(Ⅱ)
LIUJia-cheng, MEIXue-feng, GUO Yao-huang
2000, 13(4): 447-449.
[Abstract](1109)
Abstract:
The comparing-mapδon the symbolic space is topologically conjugate to the shiftmapσ.In this paper, characters about eventually periodic points ofδandσare studied ,it is proved thatδandσon the symbolic spaceΣ2have the same eventually periodic points set ,i. e.EP(δ)=EP(σ),and some relations between th...

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