1996, 18(3):1-7. DOI: 10.11835/j.issn.1674-4764.1996.03.001
Abstract:本文为《建筑物火灾烟气流动性状预测》系列论文之二。从建立记间热平衡式出发,导出以建筑物各房间室温为未知数的差分方程组,并与烟流解析,壁体传热解析联立进行,得到建筑物的温度分布。经计算与实测数据比较,证明预测计算是可靠的,偏安全的。
1996, 18(3):8-14. DOI: 10.11835/j.issn.1674-4764.1996.03.002
Abstract: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.
1996, 18(3):15-23. DOI: 10.11835/j.issn.1674-4764.1996.03.003
Abstract: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.
1996, 18(3):24-30122. DOI: 10.11835/j.issn.1674-4764.1996.03.004
Abstract: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.
1996, 18(3):31. DOI: 10.11835/j.issn.1674-4764.1996.03.005
Abstract: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.
1996, 18(3):42-48. DOI: 10.11835/j.issn.1674-4764.1996.03.006
Abstract: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.
1996, 18(3):49-55. DOI: 10.11835/j.issn.1674-4764.1996.03.007
Abstract: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.
1996, 18(3):56. DOI: 10.11835/j.issn.1674-4764.1996.03.008
Abstract:讨论了外伸构件在端部和附着支承点上同时有轴向力作用时的稳定性计算问题。推导出了分别以筒支段和外伸段为实际几何长度时的等效计算长度系数,并提供了实用可行的数据图表。
1996, 18(3):67-72. DOI: 10.11835/j.issn.1674-4764.1996.03.010
Abstract: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.
1996, 18(3):78. DOI: 10.11835/j.issn.1674-4764.1996.03.012
Abstract: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.
1996, 18(3):82-86. DOI: 10.11835/j.issn.1674-4764.1996.03.013
Abstract: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.
1996, 18(3):87-92. DOI: 10.11835/j.issn.1674-4764.1996.03.014
Abstract: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.
1996, 18(3):93-97. DOI: 10.11835/j.issn.1674-4764.1996.03.015
Abstract:This paper propored a concept of cap- tassels graph and illustrated that M(2m+ 1,t,G) is harmonious when n=2m+ 1 and G is strong harmonious.
1996, 18(3):98-103. DOI: 10.11835/j.issn.1674-4764.1996.03.016
Abstract: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.
1996, 18(3):116-122. DOI: 10.11835/j.issn.1674-4764.1996.03.018
Abstract: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.
1996, 18(3):123-130. DOI: 10.11835/j.issn.1674-4764.1996.03.019
Abstract:用生分算子级数法求解自由项为fi(t)∈e^λtpm(t)的线性微分方程组。首先介绍解法的理论根据,然后举例。这个方法的特点:1.用逆算子的部分分式直接求齐次方程组的通解;2.当自由项fi(t)∈e^λpm(t)时,就用逆算子的性质或微分算子级数法求方程组的特解。
1996, 18(3):131-136. DOI: 10.11835/j.issn.1674-4764.1996.03.020
Abstract: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.
1996, 18(3):137-142. DOI: 10.11835/j.issn.1674-4764.1996.03.021
Abstract: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.
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