Applied Mechanics and Materials Vols. 496-500

Abstract: Mostly used in packing and outdoor facilities in the early stage, wood-plastic composites are gradually applied to other design sectors thanks to their advantageous features including cost efficiency, environmental protection, recyclability as well as being easy to be processed and fabricated. The application of this kind of green and new material in the exhibition design sector will be beneficial to developing the standardized structure and rapid fabrication in the exhibition design to save the project construction material costs and shorten erection time. In this article, the feasibility and ecological significance of using wood-plastic composites in the exhibition sector are explored from the aspects of the physical and chemical properties of the wood-plastic composites as well as their processing methods.

Abstract: This paper studies respectively from the degree of prestress, the grade of concrete strength and the eccentricity, considers the different effects under the influence of different factors, at last gets the most reasonable material parameters.

Abstract: This paper studied the influences of different temperature histories on the assessment of cracking resistance based on the thermal stress tests, and also initially considered and discussed the effects of several empirical tests on thermal stress tests, including approximate adiabatic heating mode, temperature control mode, archived data matching mode, followed by some proposals regarding the standardizing research of thermal stress test of concrete.

Abstract: Using the dielectric loss property of carbon black , cement-based composites were prepared by introducing carbon black into cement. The reflection losses were studied using arched testing method in the frequency range of 2~18 GHz. The results showed that the absorption properties were improved in high frequency. The filling ratio of carbon black as well as the thickness of samples had influence on the absorption properties. The lowest reflection loss of-10.6 dB was obtained at 18 GHz of 5wt.% carbon black filled cement with thickness of 20mm. The new material can be used for building indoor electromagnetic radiation protection.

Abstract: By taking the comprehensive improvement of the environment of Xinxu River in Nanning City for example, the paper has analyzed the current situation of place image, interpreted the spirit of place, and considered that the place design should be based on characteristic and recognizable image, unified and diversified image, general and continuous image, accessible and humanistic image and ecological protective image of landscape sensitive area.

Abstract: The paper presents the rutting test using cylinder specimen with flexible constraint on the basis of Chinas existing rutting tests. Through laboratory rutting tests by comparing the use of the rutting plate specimen and that of the cylinder specimen, it concludes that by the use of the latter, the specimen shape is easy to control, the variability of the rutting depth is small and the ability to distinguish asphalt mixture is equivalent to the test using the plate specimen, and proves the feasibility of using the cylinder specimen with flexible constraint to carry out laboratory rutting test.

Abstract: Basing on a giant truss, this passage did a macro assessment of welding resjdual stress by the changes of material hardness which was measured by brinell hardness method after welding. This experiment measured about 1728 measurement points on 72 nodes. Statistical analysis of the hardness data shows that hardness of base metal decreases in the area of HAZ ,and plastic of welded joints increases.

Abstract: As the greenway construction grows popular,the concept and type of greenway is clarified in this study,research progresses and prospects of greenway planning are summarized.Greenway planning of Shunde District is taken for an example to elaborate properties,types,origination and tasks of greenway,moreover,construction background,ecological,human-centered and characteristic design principles were analyzed,especially the design of its buffer zone,corridor system,width of crawl lane,node system,identification system and service area.Greenway construction of Shunde District is to build a greenway network of multiple types and functions in 3 levels: region,city and community; a recreational landscaping system with regional greenland as the background,greennet and greenway as the framework,to promote a new " ecological,green and low-carbon" lifestyle,and create the new image of Shunde as a livable riverfront region full of sunshine .

Abstract: Different of large volume concrete members strength will result in changes of its bearing capacity, thus affect form removal age of structure. In this paper for the large volume concrete members, calculated the strength of the component through the concept of maturity.

Abstract: This paper introduces a variety of viscous damper installation form, including brace, herringbone and cantilever wall installation. By an example, install the bracing form, herringbone installation form and type cantilever wall installation condition are compared, And to calculate the results of its damping effect has carried on the comparative study, The superiority of the cantilever wall type layout pattern is obtained.