最新刊期
卷 13 ， 期 1 ， 1991
- 摘要：Combined with thedesign precept of Cai-Yuan highway tunnel 2 in Chongqing,stress state,time ffectiveness and rupture mechanism of rock near the bounda-ries of the tunnel and the second lining in jointed rock mass arc studied with model tests.The results show that shotcretc-bolt support betters mechanical properties of the periphey rock of the tunnel,and increases the capacity of anti-deformation.The second lining also has the action of supporting structure.350|9|0更新时间：2023-11-28
- 摘要：In this paper,a wind tunnel model test for a wooden pagoda to be con-structed is described,which imitates a Tan-dynasty Buddha tower.It puts special emphasis on the wind effect of the pagoda,the upwind direction,the form factor,the behavior of the flying eaves,etc.A comparison between the test results in uniform and gradient wind field is made.337|7|0更新时间：2023-11-28
- 摘要：This paper suggests that the actual sky,with the exception of a few par-ticular weather conditions,such as rain and snowstorm in which artificial lighting is needed.The sky can bc divided into four types according to their sunlight conditions and sky luminance distrbutions,they arc clear sky,pscudc-clear sky,pseudo-overcast sky and overcast sky.It is inadequate to classify sky merely from cloudage and to affirm that all sky conditions except clear and overcast belong to only one type.From the viewpoint of statis-tical average over many years,when sun disk is covered with cloud,luminance distribution of the sky resembles that of overcast sky,and when there is no cloud over sun disk,it is sim-ilar to that of clear sky.The luminance distributions of pscudo-clear sky and pseudo-over-cast sky are quite.In pseudo-overcatssky,the maximum skydifferent.In pseudo-clear sky,it gets maximum sky luminence can not appear in the region around the sun in considera-tion of the problem from the viewpoint of statistial average over many years.Furthermore,the differences of horizont.al diffuse illuminancc between pseudo-clear and pseudl-ouercast sky are obvious.Therefore it is more suitable to study all kinds of skies,that is pseudo-clear and pseudo-overcast sky.777|8|0更新时间：2023-11-28
- 摘要：This paper introduces the intelligent moisture meter with a single-component microcomputer.The meter ismade according to a mathematical model tot moisture measurement.The paper mainly discusses the characeristics of hardware struc-ture and design of procedure.The meter is accurate,stable abd widely used.The appraisal of the meter is made and it is produced in hatches.724|7|0更新时间：2023-11-28
- 摘要：Combinatorial numbers as a concept of basic numbers are widely used in various fields.The determinant composd by combinatorial numbers possesses various characteristics.This paper studies the original and marvellous features of the determinant of combinatoreal numbers.And a rigorous proof is also given.937|8|0更新时间：2023-11-28
- 摘要：It's a historical inexorable trend that the development of architecture is synchronistic with the social economic and science and technology.Dwelling also faces new transformation with the passage of times.This paper makes a systematic analysis in theory,method and conception.It includes four parts,they arc cataclysm of living requirement,al-ter of general conception,the renewal of composition method,and the exploration of new style.440|8|0更新时间：2023-11-28
- 摘要：The colourcd clinker cement which fired directly from kiln has the advantages of low cost,bright colour and good colour durability.This paper studies the possibility of using calcium flouridc and gypsum combined mineralizer to calcine the col-outed clindcr cement at low temperature.Different methods such as X-ray diffraction ana ysis,scanning electron microscopy,infrared spectra analysis,combined water content chemical asysis,compressive strength test and so on arc used to study the clinder minerals,the colour,the physical and mechanics properties and behaviour of the coloured clinker cement which made both with high quality raw materials and with electric furnace reduced slag additive.399|412|0更新时间：2023-11-28
- 摘要：The desending lifclinc is a new type of lifesaving device used in high buildings.Based on the principlc of opcration and structure,the mathematical model for the optimum design of one-stage desending lifeline is cstablished in this paper.A practical de-riga example is calculated with a mcthod of discrete variablc optimum design.Some prob-lems in design arc discussed briefly.464|521|0更新时间：2023-11-28
- 摘要：In regard to stochastic and suddenly varying data,a new kind of data processor algorithm based on adaptive prediction is presented.The algorithm describes the changing pattern of measured variables by means of time series models with slowly time-varying parameters,forms the criterion by use of the adaptive and its 95% belief limit,and processes the measured data so as to reject or restrain outliers mixed in them.The simulation example indicates that the algorithm surmounts difficulties which most current algorithms encounter when processing stochastic and suddenly varying data and that it is of obvious effects.426|443|0更新时间：2023-11-28
-
- 摘要：This paper studies a long-term program of education development in the light of the theory and method of system engineering.A complete mathematical-Simulant model system is used to describe the internal regularity of an edu-cation system inside a social-economic tystem,and to put forward a set of efficient method for education development programming.The mathematical-simulant model system dis-cussed in the paper is put to practical use in a regional education programming.461|894|0更新时间：2023-11-28
- 摘要：In this paper,the frequency of space frame structure is obtained by a wavefront and an iterated power method.The computer internal storage is greatly saved.The solution so obtalned is quite in agreement with the finite solution.448|608|0更新时间：2023-11-28
- 摘要：This paper studies the production of a red cement with red clay as a raw material.It is produced by a direct calcine method using red clay as a coloring agent and red slag as an additive agent,then mixing it with white cement.614|914|0更新时间：2023-11-28
- 摘要：The environmental effects of discharge from construction sites are dis-cussed in this paper.According to its features,the discharge is classified.Based on the environmental physics,environmental chemistry cnvironmental biology,the harmful leffects of discharge and the necessity of cnvironmental protection in the construction sites are expounded.418|681|0更新时间：2023-11-28
-
- Address：Journals Department, Chongqing University, 174 Shazhengjie, Chongqing 400044, P.R.China Postal code：400044
- Tel：+86-23-65111322 Email：xuebao@cqu.edu.cn
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
0