最新刊期
卷 11 ， 期 2 ， 1989
- 摘要：This paper makes an analysis and comparison of the calculatingsystem for second-order effect in columns of reinforced concrete frames proposedby scholars at home and abroad,and the systems adopted by codes of manycountries.The focus is on explaining the conceptual error and deficiency in somemethods.After expounding the basic law of the second-order effect in framecolumns with different restraints,this paper suggests an improvement of thecalculating system for second-order effect in frame columns for China's DesignCode of Concrete Structures.622|1110|0更新时间：2023-11-28
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- 摘要：By means of the method of integral equation of ring shells ininitial parameter form,the problems of S-type corrugated tubes are studied inthis paper.Two calculating examples are given,and compared with the exactsolutions.545|479|0更新时间：2023-11-28
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- 摘要：The building cold and hot loads calculation method for design-ers is spread and used in our country.There are total 301 kinds of commonwalls and roofs,which are classified as 6 types respectively.The cold loadtemperature tables are compiled for designers.With the development of build-ing science,there will be many new types of wall construction without classi-fication.This is inconvenient for fhis new calculation method to be spread.Inthis paper,a new method of wall classification is developed according to theprinciple of fuzzy colony discernment.We have got satisfactory result in com-parison with the result gained by load calculation method.This method invo-lves only algebra calculation and comparison calculation,such as taking bigger,taking smaller etc.,so it is simple and easy for designers to use.924|746|0更新时间：2023-11-28
- 摘要：In this paper,the theological model is presented,and the ba-sic principle of the viscoelastoplastic problem is worked out by the boundaryelement direct method,and the relevent formulations are derived.Several exam-ples show that the theological model and the corresponding boundary elementmethod presented in this paper are effective and reasonable.555|12|0更新时间：2023-11-28
- 摘要：In this paper,a computer program for nonlinear analysis ofa special frame is developed.The frame has all columns fixed at the base and hinged at the top.By taking the frame as a whole,the behavior ofthe frame is studied from the test results of three specimens of the frame andlarge amount of results of computer program.The minimun value of total sumof vertical loads sustained by the frame is found and a new method of deter-mining the effective length of stepped columns is suggested.656|9|0更新时间：2023-11-28
- 摘要：Generalized convex function is a generalization of convex func-tion,including pseudoconvex function,quasiconvex function,r-convex function,etc.The properties and operation properties of generalized convex functionplay an imporant role in generalized convex programming.Xue Jiasheng discu-sed the constructive method of pseudoconvex function;J.P.Crouzeix dicussedthe properties of quasiconvex function.This paper only discusses a class ofgeneralized convex function,r-convex functions.2058|9|0更新时间：2023-11-28
- 摘要：In ombination with the reconstruction of the old Wanglongmenin Cnongqing,the authors attempt to present the problem of fire control indesign of high-density and high-rise block of flats,with respect to generalplan,architectural design,equipments and the use of natural resources in mo-untainous region.It also has widespread significance in exploring the way toreconstruct old city in mountainous region.843|9|0更新时间：2023-11-28
- 摘要：According to the charactor of the tonw-system layout in moun-tainous area,this paper analyses current situations and existing problems ontown-system in Leshan region,combining with the practice of the town-system planning in this region.This paper also studies how to make the town-system in the region rational layout in the light of the economic andsocial development tendency in the end of the 20th century and the beginningof the 21st century.872|9|0更新时间：2023-11-28
- 摘要：This paper presents that the closure function of convex func-tion in Hilbert space is definied by affine function approximation.On the ba-sis of closure function of convex function,closure function of nonconvex func-tion is introduced by concept of convex hull function.Some properties ofclosure function of convex function and nonconvex function are discussed.831|10|0更新时间：2023-11-28
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