最新刊期
卷 22 ， 期 1 ， 2000
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- 摘要：In this paper, the energy method has been used to study the change of the secondary moment of unbonded prestressed concrete continuous beams and it has been contrasted with bonded prestressed beams. The question, whether the secondary moment changes or not while loading, was answered. It shows that the primary secondary moment does not change when increment method is adopted to study the beams, but the total secondary moment will change while the force in prestressed reinforcement changes.837|1011|0更新时间：2023-11-28
- 摘要：Taking Zuo's courtyard located in Changshou county for an example, this paper analyzes the typical style of courtyards space in Three Gorges Area. Through the study on its connotation and pattern, a whole image about the courtyards in this area can be gained.571|550|0更新时间：2023-11-28
- 摘要：Along with development and standardization of market, and opening the building market to the outside world, the competition will more depend on the technique and strength of enterprises. The state-owned construction corporations must have correct understanding of technical advancement and pay greater attention to it. An appropriate approach for technical advancement should be chosen. On the other hand, the government should take measures, compulsive or hortative, on technical improvement of construction industry.370|418|0更新时间：2023-11-28
- 摘要：The 21st century is a century with focus on quality. The concept of construction engineering quality will greatly extended. The theory and method of construction quality administration will have great advancement in the 21st century. It will be shown in many respects, such as TQ, QR, CS, IC and QE. After the more and more enterprises tend to use ISO, it will naturally result in the general trend that three ISO systems will be combined into one.580|782|0更新时间：2023-11-28
- 摘要：The simplified method, in which second-order elasticity analysis having undergone stiffness reduction is employed to research into sway frames' second order effect, has begun to be accepted by Chinese Standard. In the proper ascertainment of the value of stiffness reduction factor considering non-elastic characteristic, it is advisable to properly choose the checking computation method of the stiffness reduction on the basis of a comprehensive analysis of RC frame. Combined with a contrastive analysis of the present schemes in USA and New Zealand, a scheme to ascertain the RC frames component's stiffness reduction is proposed for the revision of the Chinese Standard.476|633|0更新时间：2023-11-28
- 摘要：This paper discusses thoroughly SNMP for TCP/IP-based Internet and the problems of developing the network management system.585|638|0更新时间：2023-11-28
- 摘要：In this paper the syntheses method of polysilicon acid polyferric sulfate(PSPFS) is presented with Na2SiO3, H2SO4 and polyferric sulfate(PFS). The IR spectroscopy of PFS and PSPFS is discussed. This kind of product quality and the effect of turbidity removal is determined by the PH and Fe/Si(mol/mol) ratios of the product. When Fe/Si(mol/mol)=1.5, the product is stable.759|505|0更新时间：2023-11-28
- 摘要：This paper introduces briefly the importance of the comprehensive judgement of residential district and how to carry on the work objectively and fairly by fuzzy math. It introduces how to create the model and index system for comprehensive judgement of residential district in the first evaluation work on ten fine residential districts, organized by the Chongqing municipality.481|8|0更新时间：2023-11-28
- 摘要：The way of using pre-boring pressuremeter in investigation and evaluation for subsoil on which the high-rise building is founded and analysis of its results are briefly stated in this paper. It can be seen that this way is confirmed to be effective by examples given from practical engineering.385|885|0更新时间：2023-11-28
- 摘要：This paper introduced the formation mechanism of thermal crackle during deposit welding,and made research on the influence of chemical ingredient in hard_facing weld deposits on thermal crackling tendency during multi_layer deposit welding of high_carbon alloy using 15#steel as matrix.461|834|0更新时间：2023-11-28
- 摘要：A study on application of artificial neural networks(ANN) to active structural control is presented. A feedforward neural network with an adaptive back propagation training method is used in this paper. In the back propagation training, the learning rate is determined by ensuring the decrease of the total error function of the output training patterns at each training cycle. Four-layer-BP networks is constructed to produce the active force for the building structure subjected to earthquake excitation. Numerical examples of single-degree-of freedom systems under earthquake excitations are given to illustrate the effectiveness of the proposed control strategy.484|676|0更新时间：2023-11-28
- 摘要：:In accordance with the problems, occurred in the mountainous city's construction, especially the crises such as the destruction of ecological and humanistic environment, the loss of traditional culture and characteristics and the disorder of urban structure, this paper discusses the distinctive landscape characteristic of mountainous city thoroughly.631|6|0更新时间：2023-11-28
- 摘要：From the viewpoint of developing the tourism resource in Yunnan Province associated with the characteristics of ecological buildings,the advantages, importance and counter measures for protection and development of ecological buildings in Yunnan Province were discusssed.457|6|0更新时间：2023-11-28
- 摘要：This paper elaborates the formation of half-injection swirl-flow natural gas burning installation, its operating principle, air-dynamic and thermodynamic engineering performance and its fundamental features. It briefly introduces its effect of application in chemical splitting decomposition and variable furnace profile.394|7|0更新时间：2023-11-28
- 摘要：Around the design of air flow and distribution about the laminated air conditioning in summer in the powerhouse of Sanxia hydropower station, the system division, air flow pattern, air supply state and volume etc have been analyzed separately. Based on the existing domestic achievements, the relative calculation model has been established and the application method has been explored. From this the program named as AFDC/LACS has been compiled with language FORTRAN77 and the calculation on the airflow and distribution of the place mentioned above has been done with several design conditions. Thus some batches of the technical parameters have been provided to plan the test conditions in the heat simulated test..582|6|0更新时间：2023-11-28
- 摘要：After analyzing the development of lighting science and technology, considering the basic need of lighting and based on the inner law of the lighting science, a new kind of lighting, the healthy lighting is put forward in this paper. Then the notion, content and method for the healthy lighting were investigated.468|6|0更新时间：2023-11-28
- 摘要：This paper presents a fuzzy comprehensive evaluation method on engineering quality of steel structural installation.Comparing with existent method,this method can express objectively real quality.It is of benefit to quantity assessment of engineering quality and realizing computer management for inspection and evaluation.444|6|0更新时间：2023-11-28
- 摘要：首先用Ｃ－正规子群和ｐ－超中心的性质，对Ｉｔｏ定理作了推广，然后讨论了一类亚循环群的特征标。602|5|0更新时间：2023-11-28
- 摘要：This paper discusses the initial value problem of the nonlinear evolution equation. The uniqueness and stability of the solutions for the problem are proved. It is also obtained that the solution of the problem blows up in a finite time.568|6|0更新时间：2023-11-28
- 摘要：The calculation problems of bearing capacity of enclosed reinforced concrete strengthened brick masonry column under axial compression is introduced, which can be available for reference in calculating the bearing capacity of enclosed reinforced concrete strengthened brick masonry column.628|12|0更新时间：2023-11-28
- 摘要：The problem of intersection point of a straight line with a curved surface can be solved on the basis of the interrelation of their positions, their opposite projection and surface characteristics, by changing their projection characteristics through the methods of supplementary surface, supplementary projection and inverse evolution.988|17|0更新时间：2023-11-28
- 摘要：Tower structures are important device in the chemical equipment. They were lifted up by pulled down shearlegs. Tower structures' load is complex and changeful within lifting up. It is multifarious to analyze and to compute. At present, because people always adopts experiential or static analyzing and computing, one neglects changed circumstance and can adopt irrationally kinds of measures. It leads to break down tower structures and be lost in lifting up. This paper deduces computing formulae of danger case and provides basis for design for technics of lifting up according to analyze movement.556|1150|0更新时间：2023-11-28
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Exploration of Green Space Design''''s Shortcomings and Strategies in Internal Residential Districts
摘要：This essay analyses the shortcomings of current green space design in residential district, and points out that creating graceful human settlement environment should be based on exploring sorts of planning model and re-thinking of greenery's function, combined the spirit of traditional garden.430|762|0更新时间：2023-11-28 - 摘要：This paper discusses the influence of earthquake inputting in SSDI and summarizes the major states in seismic specification giving consideration to present states at SSDI with introduction of our new research findings in respect of SSDI.498|704|0更新时间：2023-11-28
- 摘要：The method of AC impedance spectroscopy has been applied to study the properties of interface between cement paste and crushed stone. The effect of interface between cement paste and crushed stone can be determined by comparison of three parameters in AC impedance spectroscopy.402|531|0更新时间：2023-11-28
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