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05 August 1994, Volume 13 Issue S1 Previous Issue    Next Issue

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Near Crack Line Plastoehstic Andysis of mode ⅢEdge Cracked Plates LoadedbyPoint Forces Yi Zhijian,Han Yong 1994, 13(S1): 1-5.  Abstract ( )   PDF (265KB) ( )   In this paper,the small scale yielding conditions liave been abandoned。By using the near crackline anaIYsis method,the plastoelastic solutions,which are sufficiently precise near the crack line,havebeen obtained for a mode Ⅲedge cracked plate with infinite demensions loaded by point forces in per-fect plastoelastic material;Through a reasonable assumption,mode Ⅲedge cracked plate with finite de-mensions loadeo by Doint forces,has also been analysed. References | Related Articles | Metrics

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Error Bound of Etimation and a kind of Test Statistics in Mukivariate Linear Model Yang Hu 1994, 13(S1): 6-11.  Abstract ( )   PDF (284KB) ( )   In this paper,the error bound of the bet linear unbiased eatimate is given in the multivariate lin-ear model when perturbation exists in corresponding covariance matrix,A new kind of test statistics related to the selection of regression independent variable is introduced and its upper bound is also estab-lished。 References | Related Articles | Metrics

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Stress Intensity Factor for Mode-Ⅱ Cracks Obtained by Near Carck-Line Analysis Zeng Derong,Han Yong 1994, 13(S1): 12-17.  Abstract ( )   PDF (262KB) ( )   The strase intensity factors for mode centrically and eccentrical ly crackedStrips have been ob-tained by using crack -line analysis nlethod in this paper。 References | Related Articles | Metrics

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Data interface technique between FORTRAN&.AUTOCAD Chen Sitian,Gong Shanglong 1994, 13(S1): 18-22.  Abstract ( )   PDF (252KB) ( )   The AUTOCAD,a favourable and powerful drawingsystem of person-computer talk,is widelyused in many fields.The interface technique between advanced computer langua8e and AUTOCAD,however.has barely been reported.This paper develope the interface technique between FORTRAN andAUTOCAD Compretiensively and systematically,The various drawing routines written in FORTRANare described.and an example is showed to call the drawing routineei,This interface technique has beensuccessfully used in a network analysis program of cable-stayed bridge construction. References | Related Articles | Metrics

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Inquiry of Shear Strdngth of Partially Prcstressed Concrcte Beams with Unbonded Tendons Zhou Zhixiang,Jiang Binzhang 1994, 13(S1): 23-30.  Abstract ( )   PDF (415KB) ( )   Based on the test data of 25 beams,this paper studies the shear strength of partially preetressed con-crete beams with unbonded tendons.A new calculative model for the shear strength of beams withoutweb reinforcemnt is estabiislied by means of equilibrium equations and failure theory,The shearCayyied by stirrupe and the ultimate stress of unbonded curved tendons are also discussed,A formulawhich agrees well with test results is proposed for predicting the shear strength of beanms with unbondedtendons.A comkparison is also made between the beams with and without bended tendons。 References | Related Articles | Metrics

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A EMM Method with Rccurrence Relations in Analysis of Creep and Shrinkage Liu Zhongt 1994, 13(S1): 31-34.  Abstract ( )   PDF (198KB) ( )   In this paper,AEMM method and recurrence relation’s step-by-step method for analysis of creepdnd slirinkage were combined to forni a new AENIM method with Recurrence Relations,This methodretains the advantages of the foemers and need’nt store the history of stresses and too more the steps in analysis, References | Related Articles | Metrics

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Some Problem in Nonlinear Analysis Flexble Pavement Ling Tianqing,Wang Shijie,Xu Zhihong 1994, 13(S1): 35-40.  Abstract ( )   PDF (343KB) ( )   In th is paper,the in portance of nonlinear analysis in the strucral desgn of flexible pavement isanalysed,The nonlinear anal ysis methed for the structural design of fle-xible pavement and stress-de-pendent model on the resi-lient modu li of granular base course and subgradpnd soil materials are dis-cussed.Fu rthermore,the shortcom ings in the ex isting models are also discussed. References | Related Articles | Metrics

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Investigations of Atomizati on Behavior of Diesel Fuel Containing Dissolved Gas一The effect of gas properties on atomization Shau yiming,Huang Zhen,Seiichi Shiga,Liu Yuanxiang 1994, 13(S1): 41-47.  Abstract ( )   PDF (385KB) ( )   This paper presents a study on the effect of 8as properties on the atomization using LDSA andspeed pliotographic equipment,inveetigations were made certain of the effect of the dissolved CO2 andAIR on the atomiZation drpolet size distribution,spray angle and nozzle discharge coefficient under thecondition of a steady spray of fuel containing dissolved 8as,The results show that gases of all propertieshave an effect on the atomization;Such effect depends on the dissolving capacity of the gases in ... References | Related Articles | Metrics

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Realization of An Expert System for Automobile Engtnes’Cyinder Bore and Piston Rings Design Miao Yi 1994, 13(S1): 48-53.  Abstract ( )   PDF (316KB) ( )   According to the feature of alternating logie arsumentation with numerical calculation in the pro-ess of niechanical deeign,a discussion in this paper is prxsented about the realization of an expert sysstem for automobile engines’cylinder bore and piston rings desisn,including:rule forms of knowledgeepresentation to use engineering desisn,solving tactics of ii design-evaluate-redesign"and control mechnisni of",hisrarchy plan".The impleniented system shows that the thcory as well as the methods p... References | Related Articles | Metrics

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Experimental Study of Wave Effect on Collapse in Reservoir Banks Cheng Changhua,Chen Xuebing 1994, 13(S1): 54-59.  Abstract ( )   PDF (333KB) ( )   Based on the typical model investigation of hydrodynamical effect on the reservoir banks,this paper analyses the mechanism of reservoir band col lapse and gets the relationshipe between wave heightand xollapse length and depth。 References | Related Articles | Metrics

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Evaluation of Risks in Engineering Projects He Ming 1994, 13(S1): 60-65.  Abstract ( )   PDF (339KB) ( )   Risks in any contracted engineeting projects are al ways a fact,they are a potential power whichresults in competitve qualities of a project construction and management.The fisk evaluation of a pro-ject is a reasonable choice of any project managers,and it makes-upof the project managenient theory。With the intreduction of vafious typo of project risks,the paper focuses on the applicatiori of the proba-bi lity theory to the management consideration and the assessement of the risksiil an engineer ing prejcetwith the help of somcp ractical examples,aiming at arousing the intercat of more and more managersin the field of risk management in engineering projects so as to improve their management level. References | Related Articles | Metrics

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Study on Application of Spline to Dcsign of Horizontal Alignment of Highway Tu Shurong 1994, 13(S1): 66-71.  Abstract ( )   PDF (396KB) ( )   Based on the analysis of Drac tieal exainplees and the study of vehicle running track,this paper dis-cusses the feasibility and doniii1anct3 of the application of spline to the desi8n of horizontal alignment ofhighway and proposes four important conditions for this,A new recommendation to apply local cubespline to the optimization design of horizontal aligfln1ent of highway is presented.Furthermore,themathematical model and the deeign method are also introduced. References | Related Articles | Metrics

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Investigation of Safety-guard Technique for Important Buildings on the Edge of Highway Lin Xin,Deng Zhiymg 1994, 13(S1): 72-75.  Abstract ( )   PDF (212KB) ( )   The domitory building 702of adininistration bureau of geology and mining of sichuan province islocated on the edge of a highway under construction.In this paper,on the basis of the case of safety-guard engineering for the building,the changes of meehanical behaviour of subground for buildingowing to excavation and the reinforcement technique of such subground are investigated. References | Related Articles | Metrics

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A New Method of Automatical Forming of Highway Vertical Profile Wu Guoxiong 1994, 13(S1): 76-82.  Abstract ( )   PDF (366KB) ( )   Based on the principle of two order B-spline modelling this paper procaseed the terain line of pro-file and modeled alternately to form a under-vertical profile and its curvature figure.Then,using unitsof tangent line and circular curve,the curvature figure was modeled to form a vertical profile thatmeets design demands.At last,the constraint boundaries that restrained the forming of vertical profilewere discussed. References | Related Articles | Metrics

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Influence of Variability of Lining Thickness on Reliability of Tunnel Structure She Jian 1994, 13(S1): 83-90.  Abstract ( )   PDF (411KB) ( )   In this paper,a close一range photogrammetry method is applied to trace the excavated contour oftunnel,and the real value of lining thickness is obtained.According to the″loading-structure″modeland by random finite element method,the statistical features of loading effect on the structure are ob-tained.Computer programms for forecasting the reliability of tunnel lining are developed respectivelyin the cases of ultimate condition of bearing capacity and of normal service,and as a result,the rellabili-ty index β is determined. References | Related Articles | Metrics

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Some Views on Management of Mechanical Equipment in Mechanical Construction Enterprise Cuo Xiaohong 1994, 13(S1): 91-96.  Abstract ( )   PDF (392KB) ( )   This paper discuseed current situation about Management of mechanical equipment in mechanicalconstruction enteiprise and offered some useful advises for improvement Related Articles | Metrics

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A Study on Parameter Optimation for 2K-H Planetary Gear System Yin Li 1994, 13(S1): 97-102.  Abstract ( )   PDF (282KB) ( )   This paper deals with the optimation of a few parameters of 2K-H planetary gear system.Theyare out-mating angular.out-mating modification coefficient plus X(1∑),in-mating angular,ra-tio of module and central distance m/a.At last,CAD for 2K-H [A]planetary gear system is realized. References | Related Articles | Metrics

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Studies on the Basic Features&the Prevention and Control Countermeasures of Waste-Watering of Highway in Sichuan Area Chen Hungkai,Tan Hongmei 1994, 13(S1): 103-107.  Abstract ( )   PDF (301KB) ( )   In this paper,the basic features of waste-watering of highway,i.e.the obvious fluctuation,theregional significance and the paragensis of waste一watering of h ighway,are expounded primarily.Ac-cording to the basic featires the synthetical,method must be the most basic principle in the area. Futherstudies identify obviously the imporiance for unengineering metheds and the synthetical effects of someengineering methods to be applied in some places in the course of prevention and control of waste-water-ing of highway. References | Related Articles | Metrics

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Views on FIDIC Conditions of Contract from Market Economy Huang Chengfeng 1994, 13(S1): 108-112.  Abstract ( )   PDF (343KB) ( )   As Viewed from the principles of market econowy,this paper一a nalysed the main ideas of FIDICconditions of contract such as commodity,standardization,economical time-value of capital and eco-nomical management system,and also pointed out their macro一and micro一functions. References | Related Articles | Metrics

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Float Analysis and Utilization of Network Plan for Engineering Construction Wei Daosheng 1994, 13(S1): 113-117.  Abstract ( )   PDF (283KB) ( )   The activity float of network plan in a engineering cons-truction is the time kept in reverse for uti～lization of activity.There are some relations among the total float,the free float and the independentfloat.Studing their relations could help us in making and adjusting the plan and in controling theplanned engineering speed,and we can thus get much more in social and economical benefit. References | Related Articles | Metrics

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Dynamic Decision of Vehicde Selecting for Freeway Ma Weiyao 1994, 13(S1): 118-124.  Abstract ( )   PDF (334KB) ( )   Based on the practical revenue and costs of vehicle operation on freeway,a dynamic decision mod-el of vehicle selecting for freeway is set up by means of NPV(net present value). References | Related Articles | Metrics

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Theorem of Acceleration Composition in Plane Motion of Transport Zhai Wuquan 1994, 13(S1): 125-132.  Abstract ( )   PDF (366KB) ( )   In this paper,a theorem of composition of acceleration in plane motion of transport is obtainedand some examples are given. References | Related Articles | Metrics

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On the Sentence and Method ofX4￣T（G）+X4￣T（G） Hu Guoquan 1994, 13(S1): 133-137.  Abstract ( )   PDF (207KB) ( )   This paper discusses the sentence and method of the functional linit Related Articles | Metrics

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Studies on the Method of Counting up the students’Achivements According to the Physical Education Qualified Standard for College Students Jiang Yaohui 1994, 13(S1): 146-150.  Abstract ( )   PDF (269KB) ( )   When counting up the students'achivements according to the physical Education Qualified Stan-dard for college students,teachers have to lood up several cards of each student and calculate thosemarks several times in percentage,which is a very hard work and needs the cooperation with many de-part-ments of the college.in order to simplify and standardize this work,the auther studies the problemon the following two sides:1.deviding the total mark into two parts for the two semesters to make thecounting more exact;2.making running report card according to the PEQS for College Students to coor-dinate the work of each department to reduce the omission and to increase the efficiency. References | Related Articles | Metrics