摘要:In order to establish the relationship between subjective sense and physical measurement in lighting engineering, the qualitative and quantitative analyses are connected through generalized Weber - Fechner Law. For practical application problems of lighting engineering, a proximate function of subjective sense deduced from physical measurement is brought forward. The experiment in advertising lighting shows that the result of this function is more exact and more closely to the practice than others. Using this proximate function, the illumination level, corresponding to given satisfaction level, can be found. In other words, the physical measurement corresponding to given subjective sense can be evaluated by using this proximate function, accordingly the design of lighting project can be directed reasonably.
摘要:In the light of the field investigation on Bashu Cliffside Carvings with Cliffside Sculpture and Cliffside Buddhism Temple as the main stream and the analysis of historical documents,this paper intends to show the distribution laws and the shape characteristic of Bashu Cliffside Big Buddhist Grotto.It also points out the cultural connotation of religious architecture presented by the Bashu Cliffside Buddhist Grotto matched with the nature and the temples.
摘要:Based on the function orientation of the new towns in General Planning for Beijing Municipality(2004-2020) and the condition of future economic growth and labor force demand,this paper makes a population prediction of Changping using edge-glide algorithm.It is pointed out that the population amount will decline under natural population growth,from 515 thousand in 2000 to 489 thousand in 2020.Along with the population and industry transfer from center of the municipality to outer district,the new town will have strong impact on function remission of the central city area and the population will increase rapidly in Changping.It is predicted that there will be increase of 520-630 thousand in Changping from 2000 to 2020.So it's important to take measures to meet the requirement of population growth and alleviate the function of city zone.
摘要:Taking ancient Dachang Town as an example, this paper first points out the particular value of the ancient town and introduces briefly its actuality, and then elaborates the fact that Dachang Town will he rebuilt in other place owing to the construction of Three - gorges project. Finally, this paper expounds how to preserve and keep the traditional style and features in its rebuilding layout and architectural design.
摘要:The mountainous area construction in city and the traffic way of walk is unified into the common organism through the reasonable way. This arcticle elaborates this unique space culture of the mountainous area city emphatically, and summarized six sorts of paragenesis, and provides the basis for the walk space design of mountainous area.
摘要:This article sets forth some phenomena occurring in the Architecture domain.It indicates that the Chinese Architectural circle is in the Stop-Suckle period of spirit.The reason for such phenomena enumerated above is analyzed from the aspects of particularity of the era and cultural language circumstance,as well as the impact of mass-culture with the emphasis on the effect of Mass culture.Analysis on the advantage and disadvantage of the overspreading of Mass culture was carried out and it is pointed out that mass-culture overspreading into Architectural culture is a double-edge sword.It has good influence as well as bad one,there should be correct guide to the mass culture to avoid its unfavorable effect.
摘要:Web Services is a service-oriented structure and which is really platform-independent and language-independent.In this paper, its system and key technology are analyzed,then aiming at the main problems in information sharing of urban planning information system(UPIS),a UPIS integration framework based on the Web Services is proposed and its principle is studied.Furthermore,an example with realization of UPIS system by ASP.NET in Visual Studio.NET is given.
摘要:In this paper,first,three assessment systems for green building,namely the LEED(USA) and GOBAS(China) are compared with CASBEE(Japan) in respect of central concepts,mark of evaluation and result of assessment.It is expected that this research of assessment systems could be helpful to designers of architecture in different specialties.Secondly,in this paper these three assessment systems are analyzed from the position of design work.In the end,it is pointed out that to compile a design-oriented handbook for green building design is the new domain of the assessment system for green building.
摘要:The numerical model,which combines the two-dimensional river model and ship maneuvering mathematical model,is built.The influence of Nanjing Fourth Bridge to be built across the Changjiang River on river's condition is studied.The change of river conditions around the Bridge pier is analyzed and the tracks of ship transit along the reach of the Changjiang River are simulated for the cases of before and after building the Nanjing Fourth Bridge.The parameters of navigation in sail course have been obtained.The result shows that the influence on rivers condition of the Nanjing Fourth Bridge on Changjiang River is very small,and its influence on navigation is not significant.
摘要:In this paper,the peak particle velocity and main vibration frequency are put forward as a monitoring measure of blast vibrations based on the analysis of blast vibrations damage to the structure.In this paper,the damage criteria and the safety standards of vibration in some countries are shown.In addition,this paper analyzes the influence factors of the blast and give suggestions on effective control of the blast.
摘要:An indoor experiment on explosive compaction of saturated sand has been done.The changes of pore water pressure during blasting are measured and the laws of pore water pressure increment and dissipation are analyzed.It indicates that the processes of increment and dissipation of pore water pressure have particularity along the depth and radial.At the same time,the development rule of liquefaction under explosive loading is also analyzed;these conclusions obtained in the experiment,may provide some useful references for the engineering design and the theoretic study of explosive compaction for water-saturated granular foundation.
摘要:Considering the large negative bending moment at the end of frame beam and low tensile strength of concrete,a new composite steel-concrete frame beam(CSCFB),reinforced by a T shape steel beam at the negative bending regions,was brought forward.Through two full-scale of single-layer CSCFB frame models experiment,the load-displacement curves of CSCFB and strain distribution at cross section were obtained.Compared with the ordinary composite beam,the T shape reinforcing section can enhance the beam stiffness effectively,and make it distribute reasonably.The segment flexural rigidity method is presented and validated.
摘要:According to the fact that the undrained shear strength decreases in the field vane test,applying the cylindrical expansion theory and assuming that the saturated soft clay satisfies Tresca yield criterion,the disturbance degree function D is given on the basis of the sensibility of saturated soft clay.Considering that the undrained shear strength is the linear function of the disturbance degree D in plastic region,the elastic-plastic solution of the cylindrical expansion has been gained.
摘要:In this paper,the simulation calculation of Weisheng River Bridge was firstly conducted.Based on it,the measuring points and methods for stress measuring and calculation approach for real stress were introduced.The measured results matched the calculated results very well.Stress measuring during the construction monitoring can serve as references and guides of the structural situations during the different bridge construction process.
摘要:This paper introduced FLUENT CFD simulation software and based on this software, the numerical modeling of the rotational flow sedimentation tank is set up and calculated. The separation efficiency curve and accumulation efficiency curve have been obtained and the deposition character inside the rotational flow sedimentation tank is shown. The conclusions given in this paper are valuable to the further improvement of the rotational flow sedimentation tank design.
摘要:Based on the actual situation that there is shortage of water,existence of many dry ditches,over-use of the underground water and the water pollution in the downtown of Jiaozuo city,in this paper,with comprehensive application of the multi-eco technologies such as comprehensive water-handlings and artificial wetland water purifications,the preservative strategies for the surface water and underground water together are put forward to optimize the water cycling,which can on the one hand reduce the contradictories in the water surroundings of the downtown,and on the other hand improve the landscape of dry ditches and sunk areas.
摘要:Through selecting the index of MSW compost quality and establishing the evaluation grades of index, an evaluation system with the method of fuzzy mathematics has been framed in this paper. Then, based on the assessment of single factor and comprehensive effects of different factors, in this paper, the experimental data are taken for example to evaluate the MSW compost quality. The result shows that this method is successfully applied and also can be used as a simple useful method to the evaluation of MSW compost quality.
摘要:Securitization of housing mortgage as a form of finance innovation in China develops well abroad while there are many obstacles and risks during its implementation in China.This paper discusses the message asymmetry in the risk and how to deal with it.
摘要:Political risk is one of the common risks in international construction projects, the political risk is analyzed in this paper and an evaluation model of political risk in international construction projects is presented based on BP algorithm, The model is a self- study and self- adaptive one in risk evaluation. Through the simulation study with practice data, with this model the cost improvement of international construction projects can be predicted in political risks exactly, it is useful in evaluating the comprehensive political risk.
摘要:Audit takes a unique status and has obvious function in financial surveillance system.The Audit is used to superintend the factuality,validity and virtue of fiscal and financial income and expenses.In the renewed China Audit law the functions and status of official audit have been intensified,and the qualification and status of Audit department as executing office is confirmed.This paper analyzed the official construction project audit's function and legal status.
摘要:As one of the key factors affecting the real estate,the development investment exerts leading influence on the real estate industry,which has become the pillar industry in the economic development of China.This paper aims to show the evolution route,the inner rule and the mechanism of the cyclic fluctuation of the real estate investment in China,and to give a reasonable short-term forecast of the investment based on the establishment of the ARIMA model,in order to contribute to a nicer performance of the industry in the future.
摘要:The value-at-risk(VaR) model is a statistical model to estimate and control financial risk,and used to measure the most probable loss on the next deal stage of financial asset portfolio.Based on the principle of the value-at-risk,in this paper the value-at-risk is to be applied to the risk evaluation of construction project.Assuming the sub-project prices abide by the BQ model are random variable which conform to normal distribution,this paper has built up the portfolio of project according to biding and quoted price of construction project,and adopted the variance-covariance method to measure the value-at-risk of the biding and quoted price in order to provide a feasible risk analysis tool for the evaluation of construction project bidding.
摘要:The influence of three kinds of additives: silica fume,slag and fly ash on the sulphate attack resistance of concrete were studied.The experiment results show that these three kinds of additives can improve sulphate attack resistance of the concrete and the order of their efficiency from high to low is silica fume,slag and fly ash;the development of mortar expansion value is closely related to the degree of sulphate attack resistance of the concrete;integrated assessing two concrete properties: mortar expansion value and compressive strength ratio can more exactly assess the sulphate attack resistance of the concrete.
摘要:The existence of ettringite in sulphoaluminate cement hardened paste is mainly in the form of pole-like crystal,which causes unfavorable effect on the cement.In this paper the strength and microstructure of the sulphoaluminate cement containing ultra-fine CaCO_3 weze discussed.Experimet results show that the strength of sulphoaluminate cement was obviously improved by adding 3% of ultra-fine CaCO_3.After curing for 28d,the compressive strength of cement paste and mortar is 100.6MPa and 94.1MPa respectively,and the bending strength of the mortar reached 12.5MPa.SEM study on hardened paste of sulphoaluminate cement containing ultra-fine CaCO_3 showed that its structure was dense and homogeneous,there was hardly any massive crystall detected.
摘要:The importance of indoor air quality and the effect of volatile organic compounds(VOC) on human health are discussed in this paper,TVOC as a measurement for evaluation of VOC and the VOC pollution control methods and technology for indoor air are also presented.
摘要:With the implementation of the policy for house monetarization,the real-estate guaranty company develops quickly in our country.However,there exist many problems as it is a newly emerged thing in financial system of real estate.The problems are as follows: the estate security company is defined as a medium agency in legislature,which does not conform to its feature as financial business;the local restrictions will cause the decrease of credit,weakness in risk-taking capacity and supervision of the company.Such predicament hinders the development of the guaranty company seriously.In order to resolve these problems, the crucial way is to clarify the status of the guaranty company as a non-bank financial institution,and to set up a national guaranty company to offer official security to the people of low income and enhance internal and external supervision.Only through these steps can we realize the functions of the guaranty company for real estate and give full play of its potential function.
摘要:The tuned liquid damper(TLD),as a passive energy dissipation system,has been applied in structural vibration absorption in recent years.In this paper,the achievements in the study on the principle of damping,influencing factors,analysis and design methods are generalized.The trend of the TLD development is discussed.The researches including numerical emulation technology of TLD,non-linearity analysis,research of control-TLD,effect of damping under seismic shock and construction design methods considering the TLD are the future emphases.
摘要:As key technique of digital urban planning, research on urban planning models supported by GIS and remote sensing become one of the concentrations in urban planning. According to the objects and aims of model,this paper suggets to separate the models into two kinds.integrate planning models and engineering oriented models. The progress in research of these models as well as analysis of the trends and countermeasures of the models research are introduced.
摘要:Intelligent concrete patching material can discern little concrete crackles or other structure defects and auto-excited mending material,to repair them.Thus the strength and service life of the concrete can be recovered or improved.The development and application prospect of intellectual patching material is very good for the intelligent mending way.In this paper,the research state of this kind of patching material in recent years is introduced.Especially the mending mechanism,the study and application state of cementitious capillary crystalline patching material and intellectual self-healing concrete system are discussed in detail.