最新刊期

    21 4 1999
    • Intensifying Reform on the Operating Mechanism of Building Market

      YAO Bin
      Vol. 21, Issue 4, (1999) DOI: 10.11835/j.issn.1674-4764.1999.04.001
      摘要:In this paper the necessity and urgency of reforming the operating mechanism of building market are discussed.It suggests that the improvement of quality of builing engineering in China can be ensured in aspects of system and operating mechanism only through the reforms in responsibility mechanism, competition mechanism,supply and demand mechanism,price mechanism,security mechanism and supervision and control mechanism.  
        
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    • CHEN De_qiang
      Vol. 21, Issue 4, Pages: 6-12(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.002
      摘要:This article investigates into the basis of positive assets realignment from the aspects of mathematical models and their limitations.The objectives of the research is taking advantage of the basic and special mathematical models in assets realignnment practices in order to make assets realignment decisions quantitatively and scientifically.  
        
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    • Vol. 21, Issue 4, Pages: 13-15(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.003
      摘要:According to the analysis of technology and economy about the gas supply with the medium pressure in gas pipeline network of urban gas transmission and distribution system,a more economical and feasible pressure value is obtained.  
        
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    • YAN Zhe
      Vol. 21, Issue 4, (1999) DOI: 10.11835/j.issn.1674-4764.1999.04.004
        
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    • Smoke Control Method in Atrium Building

      Vol. 21, Issue 4, Pages: 19-23(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.005
      摘要:This paper presents several regular smoke control methods in atrium buildings and analyses the factors that determine the smoke production rate of fire in atrium and balcony.As a result,eight designs of smoke control system are developed.  
        
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    • The Ecological Environment of Chinese Traditional Dwelling_Houses

      Vol. 21, Issue 4, Pages: 24-28(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.006
      摘要:This paper gives some analyses on the indoor climate and air quality in Chinese traditional quadral yard Buildings.A conclusion has been drawn that the living environment created by quadral yard building is of high quality.This kind of building is of great referential value in building human settlment environment with sustainable developmenlt and can also help to creat a better architectural form fitted in with the natural environment.  
        
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    • Vol. 21, Issue 4, Pages: 29-34(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.007
        
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    • Vol. 21, Issue 4, Pages: 35-39(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.008
        
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    • Study on Energy Efficiency of Central Air Conditioning System

      HE Xue_bing LIU Xian_ying
      Vol. 21, Issue 4, Pages: 40-44(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.009
      摘要:With rapid development of the civil\institutional\commercial central air conditioning system,the energy consumption problem becomes serious.From the view point of operation and management,this paper provides some measures to save energy through choosing suitable cooling and heating equipments,air handling units,terminal units or designing a better water system.  
        
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    • CHEN Qi_gao1 FU Zheng_hui2 DONG Zi_zhong1 LIU Cai_feng1
      Vol. 21, Issue 4, Pages: 45-49(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.010
      摘要:This paper is attempted to solve the problem of contradiction of building energy efficiency with indoor air quality.Quadrangle has the character of improving indoor air quality,since it always refreshes air intelligently.The courtyard has a long air column covering over the courtyard and the insulation of such a thick air layer can resist heat loss.As oxygen from outer space enters the courtyard,the energy can be recovered by oxygen.So,the contradiction of building energy efficiency with indoor air quality can be solved.The indoor air quality can be improved by the quadrangle combined with solar houses.  
        
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    • Investigation on Hydration_Hardening Mechanism ofModified Alumina Cement

      PENG Jia_hui
      Vol. 21, Issue 4, Pages: 50-54(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.011
      摘要:The modified alumina cement is a low alkaline cement with good durability.By means of atomic absorb spectrum,as well as the results of macro_experiment,the mechanism of hydration,hardening and modification principle are studied.  
        
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    • Methods of Mitigating Radon Inside Buildings

      Vol. 21, Issue 4, Pages: 55-60(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.012
      摘要:This paper summarized the necessities of mitigating radon inside buildings, the main way by which radon goes indoors, the principles of preventing and mitigating radon when low buildings are erected and the methods of rating the addresses of buildings. It gave a minute introduction of the methods or rules of mitigating radon in the process of designing and constructing low buildings in America. It also introduced at some length the research about the methods of mitigating radon inside the buildings which are fit for the condition of our country.  
        
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    • FU Bin ZHANG Qin CHENG Jian_ling ZHANG Jian_gao
      Vol. 21, Issue 4, Pages: 61-64(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.013
      摘要:According to the features of CAD for building water supply and drainage design,the interactive method for CAD calculation and drawing in building water supply and drainage engineering are discussed . A practical example of ADS for hydraulic calculation has been given in this paper .  
        
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    • Study on Intelligent Lighting Design Method

      CHEN Zhong_lin1 WANG Ai_ying1 GUO Ping2
      Vol. 21, Issue 4, Pages: 65-68(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.014
      摘要:In this paper,the artificial neural network theory is applied to indoor lighting design,the lighting design is combined with lighting calculation, which is fairly quick and reasonable.Furthermore this lighting design method is characterized by self_fitting and self_studying.  
        
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    • Vol. 21, Issue 4, Pages: 69-76(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.015
      摘要:In accordance with the behaviours of thick plates under the in-plane and transversal loadings,and introducing the concept of equivalent load, the coupled equations for the problem have been deduced with the theory of BEM in this paper.Thus a new method is presented for solving the problems of interaction of superstructure and foundation and subsoil,as well as for the problems of the thick plates under the complicated loadings.  
        
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    • Optimum Design of Individual Foundation and Its Application

      Vol. 21, Issue 4, (1999) DOI: 10.11835/j.issn.1674-4764.1999.04.016
      摘要:On the basis of analysing the defaults occuring in normal design,a new method of optimum design for individual foundation is put forward in this paper.This method can solve some problems successfully such as the strengh and deformation can be considered at the same time,which cannot be done in the current specification.The optimal mathematical models of individual foundation design and the bottom surface dimension design under eccentric load are derived.The optimal solution is decided by method of optimization and the method selected is penalty function and complex method, and the programs of optimum algorithm have been compiled and design and drawing of individual foundation have been completed. The final result suggests that a fair-sized economic efficiency can be obtained by using optimum method for foundation design.  
        
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    • ZHENG Xiao_yun
      Vol. 21, Issue 4, Pages: 87-90(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.018
      摘要:The problems and their causations of real estate management in our country are analysed and four countermeasures are presented in this paper. It is hoped to advance quality and level of real estate management in our country and to promote healthy development and positive circulation of real estate industry.  
        
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    • ZHENG Huai_li YUAN Zhong_xuan ZHENG Ze_gen
      Vol. 21, Issue 4, Pages: 91-95(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.019
      摘要:The present status of water environment in three gorges area of Yangtze River is analyzed in this paper.The importance to enhance water environment protection and ecology environment protection in Three Gorges area of Yangtze River is also discussed in this paper. Some suggestions about water environment protection and ecology environment protection in Three Gorges of Yangtze River are also provided . Finally, the environment constructional targets to let clear water mirror on Three Gorges area of Yangtze River again are put forward.  
        
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    • A Solution to a Drafting Problem by Hypothetical Exchange

      WU Ming_zhu
      Vol. 21, Issue 4, Pages: 96-97(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.020
      摘要:This paper proposes a drafting method for solving the intersection between circular elbow and elliptical conic pipe,which remains to be solved up to now and has not been mentioned in any textbooks.  
        
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    • WANG Kai _ rong
      Vol. 21, Issue 4, Pages: 98-101105(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.021
      摘要:In this paper,based on reference a method to solve the problem with equality constraints is given.A new approach for solving these problems is obtained,the number of dimensions of corresponding system or equations is less than that of the classic Lagrangian multiplier approximation.Using nonlinear equality constraints,the approximate algorithm is obtained.Moreover,the numerical difficulty is reduced by means of the new algorithm.  
        
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    • Discussion about Some Questions of the Profile Line

      YE Xiao _ qin
      Vol. 21, Issue 4, Pages: 102-105(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.022
      摘要:This paper discusses some questions about the profile line of space geometry,such as the judgement of the parallelism of the two profile lines with the same directions and the visibility about the skew lines and the reappeared points of profile lines, which make the solution of some questions in space geometry more easy than those commonly used.  
        
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    • Development of Modeling of the Underground Heat Exchanger for GSHP

      Vol. 21, Issue 4, Pages: 106-111(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.023
      摘要:This paper introduces the current status and development of modeling of the underground heat exchanger for a GSHP and several typical models used abroad are provided in details.  
        
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    • Analysis of the Abnormal Crevices and Causes in Bearing Cross_Wall

      LI Yi_biao
      Vol. 21, Issue 4, Pages: 117-122(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.025
      摘要:Taking the abnormal crevice in the bearing cross-wall of a students'dormitory as an example,this article deals with the description of the phenomena, features and harm of the crevice, its main causes being the temperature stress are analysed and proved, and further explanation of the problems concerned are given. Also, this article offers a reference for the design, construction and managing personnel for handling analogous problems.  
        
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    • Quality Supervision of Glass Curtain Wall Projeet

      JIANG Hong
      Vol. 21, Issue 4, Pages: 123-127(1999) DOI: 10.11835/j.issn.1674-4764.1999.04.026
      摘要:This thesis expounds the main content and the attentive problems of the supervision of glass curtiain wall during preparing stage of construction.construction stage and completion and acceptance stage,and puts forward some advices to ensure the work quality.Key Words glass curtain wall; project quality; supervision  
        
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