Archive

24 August 1987, Volume 6 Issue 4 Previous Issue    Next Issue

---

For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Select

Generalized Boolean Negation Chen Guezhen 1987, 6(4): 1-9.  Abstract ( )   PDF (517KB) ( )   The purpose of the paper is to study general negation and thier appolication to the fuzzy sets. The involution negation in full generality is discussed and its representation theorems are given. The corcept of gereralized Boolean negations is introduced and dis-cussed as well. Related Articles | Metrics

Select

Strength Theory of Strain Energy for Composites Materials Jieng Guobin 1987, 6(4): 19-24.  Abstract ( )   PDF (379KB) ( )   In this paper Based on the strain energy Concept a Fcilure Criterion for Composites Materials, is derived The presented criterion have clear physieal Concept and good agreement with Tsai-Hill arid Tsai-Wu Theory of strength for Anisotropic Materials. Related Articles | Metrics

Select

The Lateral Stability of Large Span Rib Arches Jin Weiliang, Zhao Guofan 1987, 6(4): 37-46.  Abstract ( )   PDF (586KB) ( )   In this paper, the authors investigate the lateral elastic buckling problem of a circular arch space system Composed of X-type double main arrh ribs with hinged or fixed ends and transverse bracing beams, loaded by uniformly distributed radial force. Employing the principle of the minimun potential energy, the analytic formulas of Critical buckling load qcr are obtained. Theoretical and numerical analyses show that the critical burkling load formulas given by this paper might be simply and conveniently used in design practice with Sufficient accuracy. Related Articles | Metrics

Select

Shear Strength of Simply Supported Prestressed Concrete and Partially Prestressed Concrete Beams with Concentrated Load Pang Tienming, Wang Nan 1987, 6(4): 47-54.  Abstract ( )   PDF (567KB) ( )   According to the experimental data of 530 Prestressed concrete and Partially Prest-ressed concrete beams, the authors offer the formula for calculation of shear strength of the beams, which is simple and easy to use, and in better agreement with the experimental data. In this paper, the increment of beam's Shear Strength due to the influence of Prestressing is deduced as well. Related Articles | Metrics

Select

Analysis to the Vertical Earthquake-force in the Design of Against-earthquake Structure Zhou Wenfang 1987, 6(4): 55-58.  Abstract ( )   PDF (285KB) ( )   Macroscopic analysis for some damages in Mexico Earthquake and idiscusson to another three examples are made in this paper. the result shows that the vertical earthquake-force is the primary cause for the damages to some structures Therefore the effects of vertical earthquakeforce should be considered in the design of against-earthquake. Related Articles | Metrics

Select

Essay about the National Transportation Policy Wang Jian 1987, 6(4): 73-80.  Abstract ( )   PDF (616KB) ( )   This paper deal with the national transportation policy from view of our national transportation system's history and transportation science research. The present structure which railway plays a dominant role will change to the synthetical developing of all transportation models, it compose four systems:mass tranist, regional, national and internal transportation system. Govement should make a suitable policy and reform the system of the administration. Related Articles | Metrics

Select

The Transfered Relation Between Stormwater Kernel Functions Which is Based on The Relationship of Storage-Release Chen Shengjia 1987, 6(4): 81-88.  Abstract ( )   PDF (482KB) ( )   Based on the stnding relationship of storage-release and the physis property of linear and nonlinear Kernel function, We Yealize that the relationship between linear and nonlinear Kernel function exists inherent physic relation of thing. If we catch at this objective law. weuse the linear kernel to express nonlinear kernel, it is too convenience calculating for us. This paper not only describes the physic property and trausfered relation, but also proposes four models of nonlinear kernel function which include time Variance and time invariance. Therefore, prospect of linear kernel researching is Opened. Related Articles | Metrics

Select

A Method of Forming Initial Highway Design Profile Automatically by the Undulate Degree Tang Yong 1987, 6(4): 95-100.  Abstract ( )   PDF (378KB) ( )   This paper presents a comcept of the undulate degree the change grade points to the mathematical property of at which the undulate degree is extreme value. Basd on it, the initial highway design profile is formed automatically by computer. Related Articles | Metrics