Concrete Sandwich Composite Wallboard Thermal And Mechanical Properties Of (summer And Cold Winter Region)

Recently the energy-saving not only is a basic characteristics of the buildings' strategy of sustainable development, but also becomes an important domain for the development of the contemporary construction science and the construction industry in China. It is the primary way to popularize the energy-saving of construction that improving the heat insulation performance of the enclosed elements (i.e., walls, windows, doors and roof) of building. In the enclosed elements, the external walls contact the most to the outdoor environment, so they influence much to the heat insulation performance of construction. And the core that the external walls insulate heat is to adopt right measures to reduce the heat exchanges between inner and outdoor.Reinforce concrete composite wall-panel, one kind of concrete walls, is to be able to insulate heat as well as bear loading. This research focuses on its heat insulation and its mechanical behavior under the vertical loading and horizontal loading.Through theoretical analysis, the heat insulation was investigated. According to the process of heat transmission and the design rules of energy-saving, the study investigated several groups of indexes of heat transmission and heat inertia. The influences of the thickness of concrete layer, the thickness of heat insulation layer and the ratio of oblique steel rods were analyzed. The results proposed that the thickness of concrete influenced a lot to the wall's performance of heat insulation and that the "hot bridge" effect of the oblique steel rods that cross through the heat insulation layer was very obvious. Through comparative analysis, some advice to improve the design rules of energy-saving for the hot-summer and cold-winter area, such as the area of Zhejiang Province, were given out.Through finite element analysis using several tools in the ANSYS, the concrete walls' mechanical behavior under the vertical loading and/or horizontal loading were studied. After several groups of comparative experiments that used the concrete walls with different ratios of length and wide, the distribution of stress, the characteristics of distortion and the oblique steel rods' stress were investigated. The experiments found out that the oblique steel rods linked the concrete side to side and formed a whole to bear the outside loading and that the mechanical behavior were influenced largely by the thickness of the two side concrete layers and by the yield strength and the ratio of oblique steel rods.A ten floors concrete wall building was also designed according to the above research conclusions. The temporal analysis of the whole building and its elastic plasticity are tested by the SATWE and EPDA. And the results proposed that the construction could even bear the distortion caused by the earthquake of degree seven but that the building's ductility is bad.In conclusion, reinforce composite wall-panel can be used to the civil buildings in the area of hot summer and cold winter, such as that of Zhejiang Province. In addition, it meets the policy of "energy emission reduction", so it holds great potential to promote to apply in the buildings in our province.