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  • CN 51-1277/U
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2000 Vol. 13, No. 1

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Investigation on Shear Strength of the Oblique Section of Concrete Simply Supported Beam
ZHANGKai-jing
2000, 13(1): 1-6.
[Abstract](1273)
Abstract:
The main parameters affecting the shear strength of the reinforced concrete (RC), partial prestressed concrete (PPC) and prestressed concrete (PC) simply supported beams are analyzed and optimized; and the expression formula for the shear strengths of the concrete and the hooped reinforcement are pu...
Calculation of the Free Vibration Characteristics of Soil-Construction Interaction System
SHENAi-guo
2000, 13(1): 7-10.
[Abstract](1480)
Abstract:
Amodel forsoil-construction system is established bytransformingthe semi-infinite elastic ground into a complex stiffness embodied in the boundary layer between soil and construction, and the extended characteristic equation of the proposed model is derived. Through solving the characteristic equati...
A Study on Lateral Rigidity of Bridge Pier in High Speed Railway
NINGXiao-jun, LIXiao-zhen, QIANG Shi-zhong
2000, 13(1): 11-13.
[Abstract](1685)
Abstract:
Using the theory of coupled vibration between bridge and vehicle, this paper makes an initial study on the lateral rigidity of piers of a medium-small span simply-supported girder bridge. By calculating and comparing the vibration responses of vehicle and bridge on the piers with different lateral s...
An Optimization Model for the Structure of Up-Flow Anaerobic Sludge Blanket Reactor and Its Use
CHENChun-guang, ZHENG Shuang-ying
2000, 13(1): 14-17.
[Abstract](1491)
Abstract:
According to the simplified flowpattern of an up-flowanaerobic sludge blanket (UASB) reactor, a structural optimization model is constructed. Through solving the optimization model and analyzing the correspondingresults, it can be concluded that (1) the structure design of the UASB reactor must be f...
Discrete Element Simulation of Full-Course Kinematics of Rocky High-Speed Landslide
CHENG Qian-gong, HUHou-tian
2000, 13(1): 18-22.
[Abstract](1708)
Abstract:
Based on the models of landslide geometry, kinematics and dynamics, and through a distinct element numerical simulation, the process and mechanismof slope rock-massmoving and landslide damming in the big deformation stage after failure were revealed and reappeared, thus providing a scientific basis ...
A Simulation of the Hydraulic and Mechanical Response to the Rainfall Process of the Typical Subgrade Slope in Chengdu-Chongqing Railway
XUZe-min, YANGLi-zhong
2000, 13(1): 23-27.
[Abstract](1314)
Abstract:
The typical subgrade slope of Chengdu-Chongqing railway is made of sandstone-mudstone layers and its weathering zones are covered by a sand layerwith a thickness of 2~5 m. Simulation tests indicate that the hydraulic and mechanical responses of the slope to a rainfall process is influenced by the in...
A Study on the Running Stability of Trains on Turnouts
WANG Ping
2000, 13(1): 28-31.
[Abstract](1481)
Abstract:
The spatial couplingmodel forrailwayturnoutsystem is improved inwhichthe vertical and lateral structure irregularities of turnouts and the variation ofwheel/rail contact geometry are taken into account. It is used to simulate the body hunting of trains and to analyze the running stability and safety...
The Excavation Procedure of Super-Large Underground Chambers and the Surrounding Rock Stability
YANGMing-ju, CHANG Shao-dong
2000, 13(1): 32-35.
[Abstract](1446)
Abstract:
During the construction of a group of super-large chambers, the most critical problem is the stability of the surrounding rock. So it’s necessary to analyze the excavation sequence and the stability of the underground chambers. In this paper, three main chambers of an underground hydropower station ...
On Confluence Movement Modes of Mixed Traffic Flow
LUOXia
2000, 13(1): 36-39.
[Abstract](1542)
Abstract:
This paper employs the process describingmethod to reveal the confluence movementofthe mixed traffic flow, obtaining that the mixed traffic flow unnecessarily obeys the rule-“the first arrived is served first”-in confluence process. Using the confluence acceptance probability theory, it is obtained ...
Operation Simulation of a Highway Passenger Transportation Terminal System
YANQi-peng, GAO Shi-lian
2000, 13(1): 40-43.
[Abstract](1454)
Abstract:
The characteristics of a highway passenger transportation terminal system are analyzed. By employing the simulation optimization theory and method, the operation simulation framework of the system is constructed; the simulation programthat has been confirmed effective iswritten; and thewhole process...
Solving Traffic Equilibrium Assignment Problem with Genetic Algorithm
CHEN Yan-ru, PUYun
2000, 13(1): 44-47.
[Abstract](1516)
Abstract:
This paper proposes a parallel processing method of genetic algorithm for the traffic equilibrium assignment problem with fixed traffic demand in order to forecast the traffic volume accurately. In the algorithm design, some improved steps such as the multi-dimensional parallel crossover, variationa...
The Spontaneous Configuration of Ferroelectric-Ferroelastic Materials:Ⅱ ———Polycrystalline Materials
ZHANG Ying
2000, 13(1): 48-53.
[Abstract](1125)
Abstract:
As the internal energy densityof ferroelectric-ferroelastic single cystals is the non-convexfunction of the transformation gradients and the electric displacements in the process of polarization, in natural conditions (i.e., without external forces and external electric fields), the stable spontaneo...
Spline Finite Point Method for Geometrically Nonlinear Analysis of Arch Structure
DUANHai-juan, QINRong
2000, 13(1): 54-56.
[Abstract](1362)
Abstract:
A spline finite point method for geometrically nonlinear analysis of arch structure is presented. With the displacement componentsuandwtreated as fundamental unknown variables, and the cubicB spline functions as displacement functions, the nonlinear stiffness equations of spline discretization are e...
On the Homotopy Iteration Method and Its Application in the Mechanism Problems
LILi, ZHANGJian, CHEN Yong
2000, 13(1): 57-60.
[Abstract](1129)
Abstract:
Based on the analysis ofthe zero set characteristics ofthe nonlinear polynomial mappinghomotopy function, a homotopy iteration method with an improved homotopy tracking scheme is proposed in this paper, and the feasibility and reliability of the homotopy iteration method for solving nonlinear polyno...
Radiation Properties of Wire Meshes
DENG Zhi-hui, WANG Yun-shi
2000, 13(1): 61-64.
[Abstract](1081)
Abstract:
Amethod for calculatingthe radiation properties ofwire meshes is presented, inwhichthe effects of scattering and surface characteristics are both taken into consideration, and the stratified superposition principle and a double-flux model are employed. Finally the calculated results are compared wit...
A Genetic-Neural Network Algorithm in Optimum Design
ZHAO Zheng-jia, HUANGHong-zhong, CHENXin
2000, 13(1): 65-68.
[Abstract](1655)
Abstract:
Agenetic-neural network algorithmforoptimumdesign is developed. In the algorithm, the global property of genetic algorithms (AG) and the parallelism of artificial neural networks (AN2) are combined; GA provides global initial solutions, fromwhich AN2obtains the final solutions. Thus, the defects of ...
The Reliability Analysis of the Tilting Mechanism Control System of Tilting Trains
DAIXiao-wen, YANJun-mao, BUJi-ling
2000, 13(1): 69-71.
[Abstract](1414)
Abstract:
The failure tree affecting the reliability of the tilting mechanism control system of tilting trains is introduced. Then the redundant control system is used to serve as the reliability optimization model of the system, and the formula of reliability is derived. At the same time, the redundant syste...
An Efficient 4-Node Plane Hybrid/Mixed Element with Tensorial Formulation
YANG Fan, WANGJun, CHENDa-peng
2000, 13(1): 72-76.
[Abstract](1478)
Abstract:
The paper is mainly concerned with developing a kind of tensorial formulation scheme for low- order hybrid/mixed finite elements based on Hellinger-Reisser variational principle. By making use of the invariance properties of tensors, the disadvantages due to coordinates transformation are totally av...
Schema Theory on Natural Number Coding
LIJun, XIEBing-lei, GUO Yao-huang
2000, 13(1): 77-80.
[Abstract](1543)
Abstract:
In this paper, based on the analysis of the genetic algorithm on binary coding, a preliminary discussion is made on the genetic algorithmof natural number coding. The schema and the order of schema which are based on natural number coding are discussed, and the correspondingschema theory is derived....
Deformation Analysis of SMA Springs and Its Application to Vibration Control
LIUAi-rong, PAN Yi-su, ZHOUBen-kuan
2000, 13(1): 81-85.
[Abstract](1155)
Abstract:
In this paper, the constitutive model by Brinson (1993) is modified, and the constitutive model suitable for shape-memory alloy (AMS) springs is built. Based on the constitutive model, the deformation of SMAsprings is analyzed. It can be seen thatthe stiffness ofSMAsprings is variable under differen...
Application and Design of the Wavelet Filter in Weak Signal Detection
LIShi-ling, LIHe-sheng, LI Zhi
2000, 13(1): 86-89.
[Abstract](1499)
Abstract:
Awavelet energy accumulation model, which can be used to obtain the accumulation in different decomposition scales, is designed on the basis of multi-scale decomposition properties ofwavelet transform. Furthermore, a wavelet energy detectingmethod forweak signal detection is presented, and the detec...
A Study on Optimum Design of Trapezoid Movable Core Alternating Current Arc Welding Machines
LvQi-bing, QUJin-shan, GULiang
2000, 13(1): 90-93.
[Abstract](1406)
Abstract:
The object functions of optimum designs are discussed for trapezoid movable core alternating current arc welding machines. Based on the discussion, a mathematical model for the optimum designs is built, and computer software for the optimum design is programmed, with which the optimum designs of wel...
Research on the Comparing-Mapδon the Symbolic Space (Ⅰ)
LIUJia-cheng, GUO Yao-huang, WANGLi
2000, 13(1): 94-97.
[Abstract](1122)
Abstract:
In this paper, the comparing-mapδon the symbolic spaceΣ2is introduced. Then an infinite 0-1 matrix is constructed to prove thatδis topologically conjugate to the shiftmapσ. Furthermore, the characters of periodic points of the comparing-mapδare studied, and several equivalent conditions for certain ...
Fuzzy Approach for Bi-Level Programming Problems (Ⅱ)
PEI Zheng, HUANGTian-min
2000, 13(1): 98-101.
[Abstract](1304)
Abstract:
A fuzzy mathematical approach is proposed for bi-level programming problems in which the upper-level has constraints and the lower-level consists ofNindependent programming units. A bi-level programming problem is divided into many classical ones, then by introducing the concepts of membership funct...
A Hybrid Learning Algorithm for Extracting and Optimizing Fuzzy Rule Bases
TANG Yong-chuan, HUANGTian-min
2000, 13(1): 102-105.
[Abstract](1636)
Abstract:
This paper proposes a hierarchical learning algorithm for optimizing fuzzy rule bases. In this algorithm, Takagi-Sugeno fuzzy neural network is used for the parametric learning of a fuzzy rule base with steepest descent method. Then, the structure of fuzzy rule bases is optimized with the binary cod...
Study on Dynamic Income Present Value Method for Appraising Mineral Resource Assets
ZHANGJin-suo, LIHuai-zu, HEDe-quan
2000, 13(1): 106-120.
[Abstract](1355)
Abstract:
The authors of this paper, by making researches on the income present value method for appraisingmineral resources assets using time series analysis theory and asset pricing theory, establish a dynamic model of forecasting the future net incomes of the mineral resource assets to be appraised, and pu...

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