摘要:This paper introduced the suitability analysis method of landscape planning,and its application to the planning of open space system for Beihai City,Guangxi.Finally some problems for its application in practice and faculty for their solution were given.
摘要:Housing design in Chinese cities has reached a new summit since the middle of 1980's.In the past decade,great changes have taken place about conception and method of housing design.During the alternation of two centuries,people pay much more attention to the new housing design.This paper is concerned with the conception and principle of new housing design and architectural pattern of new housing. The design conception,of coexistence between housing and environment and the balance of ecosystem,should be set up in design of the new housing leaping over the era.We should consider human being as the core of housing design,improve the quality of housing environment adaptability and changeableness of housing to make housing grow with the development of living- pattern and society.The Architecture pattern of new housing in the period of nineth five year plan is as follows: The housing which save the land,energy and material.The living- style housing with complete function and all necessary fittings;adaptable and changeable house,with household participation;The growing- style housing completed gradually.
摘要:The residence exterior environment affects the living quality of the residents directly.This article offers methods and means to improve the quality of the residence exterior environment in light of general arrangement,environmental space designing,environmental art designing,etc.on the basis of the author,s engineering practice.
摘要:Some thermal behaviours including the pattern of the efflux of air supply ,the uniformity of room temperature and air velocity are all- sidedly analysed and evaluated,based on the tests in a typical office with a floor- mounted split type AC- er.Several conclusions on some applications in engineering that the engineers and technicians are concerned with are presented in this paper.
摘要:Parameters dominating elasto- plastic earthquake response of SDOF systems,relation between ground motion amplitude and elasto- plastic response of SDOF systems are presented in this paper.
摘要:Taking the Structural optimum of main metal frame of mast- crane as a sample,this paper discussed the method of Structural optimization of common middle & high flexibility metal tower- frame by dynamic programming.The method of dynamic programming applied to the structural optimum was deducted and the minimum weight design method of tower- frame was practiced The paper gave up the traditional interactive way of choosing type of material,combining with the concrete example,changed the data- table looking up into formula solution,shifting with one by one into directly sieving within selected types,artificially fixing up composed rods into automaticaliy arranging them through the way of maximum twist moment of inertia,thus,accelerate optimization and offered a short way for artificial structural analysis and calculation.
摘要:In this paper,the influence of set- retarding on applications of alkali- slag cement and concrete is analysed.Set character of alkali- slag cement and suitability of measures used at home and abtord are discussed.On the basis of above mentioned,it is proposed that the only way to solve the fast- set problem of alkali- slag cement is by incorporating efficient retarders,and researches on mechanism of retarders along with deve loping new composite retarders are the most important topics in the research field of alkali- slag cement and concrete.
摘要:A high strength concrete with 28 day strength up to 80 MPa from superfine sand with fineness modulus of 0.56 is obtained.It has a permeability resistance of 4.0 MPa and small shrinkage creep.Experiment and study were carried out on its pore structure,hydration products and microhardness of transient area in cement paste and aggregate interface. The essence for high strength of such concrete was revealed.
摘要:In this paper,several calculation methods for hawser cables as the crane stability system in loading and unloading forces is put out by coordinating principle of deformed body.It is convenient for adjustment of crane in unloading state to benifit accurance of the equipment installation and safrty of device during hoisting.It is also a more accurate and practical method for choice of the cable.
摘要:In this paper,a new mode of sectional even mass cantilever of silos was established and an analysis of infinite degree of freedom for it was carried out.In the end,a calculation example of this precise,reliable and practical mode was given.
摘要:Zenith luminance converting factor is the characteristic parameter of sky luminance distribution,which is not related to regions.The fractal dimension value of the change process of zenith luminance converting factor shows that the sky can be divided into four types as CIE standard clear sky,pseudo- clear sky,pseudo- overcast sky and CIEstandard overcast sky.This is more suitable for the study of sky lumimance distribution with the exception of a few particular weather conditions.
摘要:This paper presents objectives of study of grey system and the GM(1,1)grey forecast model is introduced.A new forecasting method was introduced which combined merits of both grey GM(1,1)forecast and Markov forecast overcome their shortcomings and increased precision of forecast.Finaly, an example for application was given.
摘要:This article introduces the principle and formation of hardwares and softwares of Full Range CH4 Surveying Meter used in mines.This kind of instrument can survey CH4 density ranging from zero to 100 percent.D to the adoption of the new- type chip computer PIC16C57 and I2CBOS series connection I/O technique,the meter,s revising the non- linearity of the heat conductive element,the surveying result become more accurate.
摘要:Owing to the fact that the outer- wall paint,exposed to the weather,is subjected to following attacks,such as ultraviolet ray,heat,rainwater and dust deposit in the air,the protective and decorative actions of outer- wall paint are damaged,and eventually the paint loses its practical use.In this paper,due to the fact that the acid deposit injury is very serious in chongging region,the methods of weatherability test applied for outer- wall paint in the region,are studied.