Applied Mechanics and Materials Vols. 71-78

Abstract: According to the conditions of the research in both civil and aboard, and thinking of the northeast region's climate characteristics, we research performance of the bitumen with different dosage Lake asphalt. And we also analyze the Lake Asphalt mixtures with two representative kinds of aggregates. Pave test-road and summarize the construction technology of the lake asphalt mixture.

Abstract: In order to study the bearing capacity and section stress-strain distribute on the steel tube filled with steel-reinforced concrete (STSRC) compression-flexure column, four compression-flexure members of STSRC were tested and theoretical researched. The major parameters of the test were axial compression ratio (n=0.5~0.85). The result of the study showed that: load-deformation() typical curve includes three stages, elastic characteristic, elastic-plastic characteristic, and disruption; Along with the increase of axial compression ratio, the bearing capacity and ductility reduced, but the peak displacement had not change enough; The composite column conformed to plane section, and the larger the axial compression ratio, the further distance of neutral axis of section to the centric axis and closer to the tensile region. ; During the loading process, the steel skeleton in compressive zone yield, but in tensile region never yielded. According to the test results and the limit equilibrium method, the formula for calculating the compression-flexure member of STSRC was established. A good agreement between the calculation results and testing results illustrates, which is feasible to using the calculating formula to calculate the bearing capacity of STSRC.

Abstract: This paper analyzes the current status and inadequate of three-dimensional parametric design, and introduces the conceptions and principles of KBE (Knowledge Based Engineering) technology and the parametric design. The key techniques of parametric design system are studied based on the platform of combination of SolidWorks as three-dimensional feature modeling software, Microsoft Access as supported database and Microsoft Visual Basic as the development tool. Firstly, we divide the product into modules by functions. Secondly, invoke corresponding knowledge and methods of design and calculation in the KBE knowledge base to perform design and calculation. Then we use parametric modification method combined with equations, values link and design tables to get the parametric models, judge the rationality of the design parameters through finite element analysis, and create the drawings which meet the processing and production requirements using drawings automatically adjustment technology. Finally a case study of stacker design is given to validate these techniques of parametric design system, and show that the techniques have great significance for improving product design quality, shorting the design cycle and improving the competitiveness of enterprises.

Abstract: According to the micro-climate environment outdoor of the region, wind environment outdoor which is under planning programming can be done analog computation using computational fluid mechanics PHOENICS software. A set of comprehensive prediction and assessment system which is mainly focused on outdoor environment composite index WBGT can be established combining with assessment method on wind environment outdoor of predecessors in order to more accurately and humanly predict and assess the wind environment outdoor, bring safe, comfortable and healthy outdoor environment and provide references for the assessment and design of green residential district.

Abstract: It is the first time to adopt shock-isolation technology in giant steel frame structure in Guangdong Science Center E area, by using remote wireless automatic monitoring system, it executes health monitoring of isolation bearings. Based on the platform of Guangdong Science Center, it shows scientific presentation of new technology and plays a key role in popular science education, which will promote the application of shock-isolation technology in structural engineering field.

Abstract: Porous concrete is commonly used by ecologically sound construction companies, since it helps to manage water runoff in sustainable way. Many so-called “green” builders promote the use of porous concrete in their projects [1]. Although porous concrete is a viable material that has the potential to replace the use of traditional concrete pavements in situations where heavy traffic is limited, porous concrete has been predominantly used in non-pavements applications, with only a limited use in pavements applications. This paper provides a clear indication of design and maintenance of porous concrete in pavements applications. Various designs of porous concrete pavement were schematized and explained.

Abstract: As stadiums have high energy consumption in architectural lighting and air conditioning, how to make full use of natural lighting and natural ventilation is the key to architectural energy conservation. To this end, many passive energy conservation measures have been taken into account in designing Multifunctional Stadium of Guangdong Pharmaceutical University. For instance, strip light windows with vertical shading have been installed on east and west facade, open external windows on south and north facade, and green roof on Auxiliary Stadium etc. Test result of the Stadium shows that the above-mentioned passive design methods are able to increase natural light intensity of the playing field and prevent glare, improve wind velocity of natural ventilation and comfort in spectator areas, reduce inner surface temperature and thermal radiation of the roof on Auxiliary Stadium.

Abstract: The design of kitchen and bath for small and middle-sized apartments requires details since it is conducted within a small space. Kitchen and bath space has different functions, and the needs for functions vary among different households. The author put forward the idea of a detailed design mode of kitchen and bathroom space in China by referring to characteristics and structures of designs for Japanese small-sized apartments, which combines Chinese-and-western style kitchen, composite bathroom and unified wring.

Abstract: This study developed municipal green roof promotion strategies by reviewing successful green roof initiatives of the international municipalities. This paper consists of three major parts: the first introduced some green roof initiative policies in some cities. The second part of this paper employs the key findings of some municipal governments have set green roof policies and program to assist the government policy makers can better determine which policies suit their needs. The third part of this paper is to propose some green roof promotion strategies for the municipalities to pursue the goals of energy-saving carbon reduction and ecological-compensation for the cities.

Abstract: Recently, some serious earthquakes happened in the world and seriously threaten the safety of the life and property of the people. Monitoring and measuring the quakeproof capacity of building need to install high cost sensitive instruments to provide sufficient information. A cost-effective and reliable method based on the applying digital image correlation method, DIC to monitor the natural frequency of building under excitation of earthquake as damage index is proposed in this research. Using DIC to monitor the structural damage based on the natural frequency as damage index can easily detect the structural damage after the excitation of earthquake. Test results reveal that sensitivity of this DIC method is superior to traditional data collected by installed accelerometers, ACC in structure.