Archive

21 June 1993, Volume 12 Issue 3 Previous Issue    Next Issue

---

For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Select

Computing Method for the Design of Cascade Stilling Basins for High Dam Spillways Tan Zhcnhong, Bai Zipei 1993, 12(3): 1-7.  Abstract ( )   PDF (398KB) ( )   Conventional methods of energy dissipation by single-fall hydraulic jump-type stilling basin, roller bucket, or ski-jumpbucket may not be suitable for high dam spillways be-cause of very high velocity at the end of the spillways, niadc-quatc tailwater depthw, or Side Coditions. A suitable spillway alternative can be a cascade of falls with a still-ingbasin below each fall. This paper presents a computing method for the design of cascade stilling basins for high dam spillways. The design is demenstrated by a numcrical example. Related Articles | Metrics

Select

Research on the Layout and Property of the port of Side Wall Culvert in Locks Liu PinChang, Lai Zitang 1993, 12(3): 8-16.  Abstract ( )   PDF (574KB) ( )   In the local modelling exporiment, by experimenting with the property of simple port culvert in ship lock, the relationship μp=f(k) has been establiohed. The formula for the drag coefficient of the single port culvert has been set up. in the whole modelling of ship lock, the property of the flow and the law of distribution of the water change of the port culvert have been illustrated. The proper layout lenth of the cutlet sectcr and the ra (∑ωb)/ωr areas have also been determined, the research resuhts can have reference value. Related Articles | Metrics

Select

Some Matrix Research in Statistics Wang Songgui, Yang Hu 1993, 12(3): 17-28.  Abstract ( )   PDF (816KB) ( )   Matrix theory has come into wide use in many branches of the modern statistics, moreover their developements have been caused by many concerning problems proposed in the statistics. In this paper, three further problems related to statistics, such as {2}-generalized inverse, the singular approximating and the ordering relation of matrices are in troduced in the matrix theory. Bseides, some application of the above results are also discussed in the statistics, especially in the multivariate analysis and the parameter estimate of the linear model. Related Articles | Metrics

Select

The Approach to the Formative Arts for Long-span Hanging Type Bridges Yang Shijin 1993, 12(3): 29-41.  Abstract ( )   PDF (870KB) ( )   This paper begins with solving the formative condition and aesthetic criteria for long-span suspensions and cablestayed bridges, the facade composition and the formative characteristics of the tower and beam for the long-span hanging type bridges are discussed on the basis of analysing and synthesizing the new developement of aesthetic research for these types of bridges at home and abroad, and through the analysis of actual examples, the formative theory and design technique of bridges are exlored. Related Articles | Metrics

Select

Analysis of Torsional Moment to Oblique Separation Framed Tunnel Bridges by Finite Element Method of Plates and Beams Zhao Lei, Peng Junsheng 1993, 12(3): 42-47.  Abstract ( )   PDF (343KB) ( )   This Paper discusses the distribution of torsional moment for the tunnel bridge in various oblique angles, by using finit element model of plate and beam. Numerical studies revealing the design of oblique tunnel bridges should full considered the action of torsion. Related Articles | Metrics

Select

The Fuzzy Comprehensive Evaluation of Interchange Construction Schemes Wang Yongping, Wang Jiasheng 1993, 12(3): 48-55.  Abstract ( )   PDF (505KB) ( )   This paper presents the evaluation system of urban interchange construction schemes. In this paper, the calculated model for the fuzzy comprehensive evaluation of construction schemes is discussed, the index system of influence factors is setablished and the quantitave method of indexs is given, she weights of factors are explained. Finally, a example is given. Related Articles | Metrics

Select

Quantification Aoalysis of Public traffic Capacity Increment to City Expension and Economion Development Zhou Wei, Zhang Shusheng 1993, 12(3): 56-62.  Abstract ( )   PDF (461KB) ( )   By means of the weight regression and elastic coefieint analysis, this paper proposes the quantification modes about public traffic capasity increment to city expansion and economics development, and according to them, we aecornolished the anticipation of paseenger demand and the allocation of the relevant capacity in Xian city with a good. Related Articles | Metrics

Select

Study on the load of pile in excavated Hole and Engineering Cases Zhu Zuorong, Hu Zhenying 1993, 12(3): 63-70.  Abstract ( )   PDF (527KB) ( )   This paper discusses the formula for calculating the load on pile in excavated holes. It is shown that the selected parametres with correct values are very important for an applicable formula. The first case of study is an engineering in consultation, which is a sixeen-storey office building in construction. By calculation, the potential load of the pile in excavated hole is gained. The method can save steel materials 70.98 ton and concrete 403.37 m for the foundation engineering. The second case study is an industrial building. The original programmes of that building are natural building and filling piles, but the corrected desing is taking piles in excavated holes, adopting the measures for adding the toads on the piles, such as inse rtin the piles into foundation rock, and fixing the piles by anchors. The result shortens the duration of construction engineecing and saves construction cost about RMB 489.000 yuan for the foundation engineering. Related Articles | Metrics

Select

The Proprtioning Design Method of Bituminous Mixture to Control Rutting Li Ylming 1993, 12(3): 71-76.  Abstract ( )   PDF (315KB) ( )   In this paper, the proportioning desinn method of bituminous mixtue is presented based on wheel tracking test, the controlling indexes of which arc dynamic stability and ratio of void to misture. The test road in field and model test in the structure laboratory proved that the method is reliabic and effective. Related Articles | Metrics

Select

The Crack-line Stress Field Method for Analysing Strees Intensity Factors of an Eccentrically Cracked Tension Strip Wang Qizhi 1993, 12(3): 77-81.  Abstract ( )   PDF (268KB) ( )   The crack-line stress field method, which was proposed by Pro. Yi Zhijian[1], is appied to derive stress intensity factors (STFs) of an eccentrically cracked tension strip. It is pointed out that the result of Ref.[1] is partially erroneous. The correct result is given in the present paper, a comparison with the result from classic literatures [2, 3] is also given. It is shown that Yi's method can be used effectively for the SIF solution of an eccentrically cracked tension strip. Related Articles | Metrics

Select

Application of Dalembert's Theorem to the Dynamic Problems on Turning around a Moving Point Liu Jinying 1993, 12(3): 82-88.  Abstract ( )   PDF (339KB) ( )   Dalembert's theorem is employed in this article to solve the problem of mass point system turning around a moving Point, the way proposed in this article is more simple, convenient and coefficient than the traditional way in which the equation and the procedures arc very comlicated. Related Articles | Metrics

Select

The Bending Stability and Vibration Rectangular plate With Free Edges On The Two-Parameters Elastic Foundation Wang Xiaoguo, Luo Paimao 1993, 12(3): 89-95.  Abstract ( )   PDF (393KB) ( )   In this study, a flexural function is presented. Which Satisfies all the boundary conditions of the restangular plates with free edges on elastic foundation, the bending. Stability and vibration of free rectangular plate on the two-parameters elastic foundation are analyzed by the variational principle. This method is fast and simple to be used and with very high accuracy which is worthy of being extended in engineeriy In this paper, the previous results of free rectangular plate on the winker elastic foundation have also been improved. Related Articles | Metrics

Select

The Development and Applications of Hydraulic Accumulators in Mobile System Chen Xianyang 1993, 12(3): 96-100.  Abstract ( )   PDF (339KB) ( )   This article introduces the development and application of hydraulic accumulator in mobile transmission and suspend systems, and improves the mobile technical-economical proprer-ty, and reach the regengeration of energy and repeatable utilization, emergency and security, and weaken mobile vibrations. Related Articles | Metrics

Select

Tests and Analysis on the Shear Behavior of Arc Spot Welded Diaphragm Long Liping, Lu Tieying, Qian Li 1993, 12(3): 101-113.  Abstract ( )   PDF (789KB) ( )   Based on the results of the experiments under in-plane point load, the paper analyzes the failure modes and the haiour for Arc spot welded stressed skin diaphragm in which there are intermediate pulins and there is no intermediate pulin, we put forward a lot of technical measures to ensure the quality of spot weld, and provide the value of the shear strength and stiffness for this sort of diaphramg. Related Articles | Metrics