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22 April 1985, Volume 4 Issue 2 Previous Issue    Next Issue

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New Trends in Cable Stayed Bridge in the World The World's Largest Span Cable Stayed Bridge——Annacis Island Bridge Near Vancouver, Canada Fan Lichu 1985, 4(2): 1-11.  Abstract ( )   PDF (737KB) ( )   This paper deals with the acture state and new trends in cable-stayed bridge in the world. In recent years, the cable-stayed bridges with composite stiffening girder were increasingly in long span ranges of 250 m to 465 m. The design and some aspects of the structure of Annacis Island bridge which is the world's largest span cable-stayed bridge are prensented here. It has 5 span (50 m+182.75 m+465 m+182.75 m+50 m) composite stiffening girder suspended at the "H" shape R. C. towers by paralled wire cables with a narrow spacing of only 9 m. The tower height is 154.3 m above top of pilecap. Related Articles | Metrics

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Methods of Design for Allow Stress and Probability Limitation in the Structure Design Shen Qiming, Deng Heping 1985, 4(2): 12-17.  Abstract ( )   PDF (458KB) ( )   This Paper gives a brief description of the development in the theory of the structure design and the fundamentals of the methods of design for allowed stress and probability limitation in the structure design. It also makes a comparison between their respective characteristics. Related Articles | Metrics

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The Seepage Calculation of Earth Dams Zhao Yingqi 1985, 4(2): 31-37.  Abstract ( )   PDF (430KB) ( )   This Paper Presents a new method of the seepage calculation of earth dams, and obtains the formula as follow:f(a0)=(H12-(a0+H2)2)/(2[(m1H1/(2m1+1))+m1(Hn-H1)+b+m2(Hn-a0-H2)])-a0/m2(1+In((a0+H2)/a0))=0 and it also gives the computation program of the seepage calculation of earth dams for the pocket computer PC-1500. Three examples included at the end of this paper. Related Articles | Metrics

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The Types and Computations of the Limit of Numerical Sequences Zou Zhaonan 1985, 4(2): 38-47.  Abstract ( )   PDF (501KB) ( )   As there are various types in calculating the limit of numerical sequences, the numerical sequences are classified in this paper, The auther gives the main methods and a lot of examples to the computations as well. Related Articles | Metrics

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Circulation and Cross-section Formulation in Bend Reach Gong Bingsheng 1985, 4(2): 48-54.  Abstract ( )   PDF (459KB) ( )   Based on considering the effect of bottom shear stress on the spiral flow in bend reach, this paper develops the expressions of velocity distribution transverse slope and shear stress. The relationship between circulation and cross-section formulation is also presented, and the comparisons made here show that the theoretical results agree with river and experiment data quite well. Related Articles | Metrics

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Duration Curve and its Random Analysis Xiao Zhaoyuan 1985, 4(2): 55-62.  Abstract ( )   PDF (572KB) ( )   This paper presents the statistic analysis of duration curves, which have been frequently used in channel engineering, water power engineering, and water supply and sewerage work. It is supposed that the duration curve is a stationary stochastic process, and, therefore, the self-regression model is chosen for the curve. The paper shows that with this model the computational results fit the survey data very well,and the duration curve is determinnate. As the mathematical model is very simple, the high accuracy duration water levels of different design standard can be produced through simple calculations. Related Articles | Metrics

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Psychology and Traffic Safety Wang Jian 1985, 4(2): 63-71.  Abstract ( )   PDF (691KB) ( )   This paper deals with the driver factor in the traffic accidents.From the wiew of the psychology, we consider the driver as an information processor and discuss the driver's primary information processing functions and the process. In describing the specific human factor in accident a distinction was made between human direct causes and indirect causes whose presence caused the direct causes. The traffic safety can be improved by applying the principles of the psychology in driver education, licensing, enforcement of traffic laws and remedial caurses. Related Articles | Metrics

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The Seven Classes and Seven Models of Landslide's Classification and the Law of Landslide's Distribution in Chinese Railways Fu Chuanyuan 1985, 4(2): 83-91.  Abstract ( )   PDF (793KB) ( )   There are more than one thousand large-middle scale landslides along the railway line in China. The components and properties of slip materials and the genesis of slip zone are main factors of controlling distribution and basic properties of landslides. According to the components of slip bodies, landslides may be classified seven classes including clay slid, loess slid and so on. In addition and the genesis of slip zones, they may be distinguished seven models including structure model, contact model and so on.Comprehensive nomenclature included in both classes and models may fully indicate Various main characteristics of every landslide and would be advantageous to engineering treatment. Related Articles | Metrics