Applied Mechanics and Materials Vols. 71-78

Abstract: On the basis of Man’s three major relations and harmonies, by analogy, this paper puts forward three harmonies in architecture — harmony between architecture and nature, between architecture and human, and between architecture and itself. By explaining the main content of three harmonies in architecture, the paper introduces the system constitution of the harmonious architecture and devises the concept and target of the harmonious architecture.

Abstract: Dynamic elasto-plastic analysis methods can actually indicate the characteristic of structure. This paper is concerned with the seismic performance evaluation of a super high-rise hybrid structure by using nonlinear dynamic procedure (NDP). By reasonable selection of input ground motions, the nonlinear dynamic analyses are carried out by using CANNY program. Then the seismic responses of hybrid structure under three different earthquake intensities are obtained. Comparing the responses of three levels with pre-established performance objective, the results show that all responses meet the requirements. At the same time, the inter-storey shear drifts are mentioned to judge the seismic behaviors of hybrid structure. Based on the large amount of structural response information, conclusion can be drawn that the super high-rise hybrid structure achieves the seismic performance objective.

Abstract: Based on the protection of historical bridge and the combination of landscape planning and design philosophy, an integrative design strategy is proposed for the organic renewal of historical bridge landscape. According the strategy, after organic renewal, the historical bridge landscape will regard as the esplanade, and meet the needs of leisure and tour and the people’s life. This has a positive meaning to improve quality of life and protect human environment in urban and rural areas in Guangdong.

Abstract: Rut disease and anti-rut performance of a 13km very long uphill expressway was studied, which indicates that standard rut testing methods and dynamic stability controlling standard values are not suitable for the very long uphill expressway. According to the study, the 52km very long continuous uphill expressway was divided into three sections based on the temperature and longitudinal slope condition. Many asphalt surface course combination structures were set for the three sections. Total-thickness rut tests were carried out for these combination structures at heavy loading, low speed and different temperature conditions with the developed Wheel Tracking Test equipment. A dynamic stability controlling standard value for the whole asphalt surface course of the 52km long uphill expressway was determined, and according to the dynamic stability controlling standard value, the optimal asphalt surface course combination structures were recommended for the three sections.

Abstract: The stiffness, length and weight per unit length of the guiding beam had significant effect on the internal forces of the girder during the construction. The appropriate parameters could reduce internal forces, and save materials and ensure construction safety. The effect of different parameters of the guiding beam on the behavior of girder during the construction was analyzed to determine a reasonable parameter of guiding beams on continuous curved girder bridge of spatial truss structure with concrete filled steel tubular in incremental launching construction. The results of the analysis could provide technical data the design of other launching nose for continuous curved girder bridge of spatial truss structure with concrete filled steel tubular in incremental launching construction.

Abstract: By demonstrating the economical efficiency and environmental friendliness of containers, this paper expatiates the development trend of China’s container buildings at the current stage. Researches and analysis have been conducted during the practice of container hostel virtual design by introducing the design essence of Unité d'Habitation de Marseille. This paper also proposes the low-carbon design strategy in container buildings and states the experimental analysis of wind environment in the container hostels.

Abstract: Based on conservation of mass, total mass balance equation and component mass balance equation, mathematical models of thermodynamic for the auto cascade refrigeration cycle are established. Thermophysical properties in solving the governing equation are called from the NIST REFPROP7.0. Thermodynamic properties of the auto cascade refrigeration cycle using binary mixtures, namely, R170/R290, R23/R227ea, R116/R134a, R23/R134a, R170/R600a, R170/R600 and R170/R152a as refrigerants is evaluated. R170/R600a is selected for the low temperature refrigeration system, and the influences of cycle mole fraction, compression ratio and evaporating pressure on the cycle performance are analysed.

Abstract: This paper utilizes the production function model as analysis model, selects gross product of construction industry of China as output (Q), the sum of fixed assets and current assets of construction industry of China as capital input (K), and the numbers of construction workers of China as labor input (L). The comparable prices of ‘Q’ and ‘K’ from 1993-2009 are calculated by using the deflator index of gross domestic product and the price indices of investment in fixed assets, and the base year is 1991. The result of regression analysis shows the labor elasticity factor is 0.42 by using the software of ‘EVIEWS’, then the contribution rate of construction workers is calculated as 33.2%, and the sharing rate of construction economic gain is 15.69%. Comparing with the contribution of the construction workers, their sharing is less. This paper also finds the construction industry of China is the period of decreasing return to scale, this demonstrates the management level of construction industry shall be improved.

Abstract: In terms of architectural insulation materials, recycled materials, clean energy technology, architectural ventilation technology, architectural tridimensional virescence and rainwater collection systems, the aim is to analyze Shanghai Case and London Case which are two permanent green buildings in the World EXPO 2010. Through site investigation, the results showed that these two cases are outstanding in terms of architectural materials and eco-technology for urban sustainable development.

Abstract: In this paper two-way orthogonal-diagonal double-layer space grids structure is assumed as equivalent sandwich plate, and has been analyzed by the non-traditional theory of plate with three generalized displacements, in which shearing deformation is considered. Based upon the split rigidity method, static analysis and natural vibration analysis of two-way orthogonal-diagonal double-layer space grids structure has been studied and the simplified formulas are given out. The comparison with the results of equivalent sandwich plate method shows that as a more simplified method, split rigidity method is as accurate as equivalent sandwich plate method.