Study On The Low-carbon Design Of Low-rise Steel-timber Combined Structure Housing In Cold Regions

After entering in twenty-first Century, goobal warming, the depletion of resourcesand serious environmental pollution, and the current domestic cold regionsfacing the process of urban-nization, the rapid growth of energy consumption ofresidential construction, the increasing, carbon dioxide emissions are rising rapidly, at the same time, in the existing residential structure system in the "life cycle" can not meet the changes of function and health of occupants comforthumanization demand.In view of the above situation, combined with the characteristics of cold climateand living habits, this paper puts forward the low rise residential from of steel-timber combined structure of this modern wooden structure system under the framework of the research, and the development of the the structural form in the situation at home and abroad and the present situation,and summarized the structure weight is light, the resistance of wind and seismic is strong flexible space advantage and economic construction is convenient, short construction period, dependence onskilled workers with low, low comprehensive cost and satisfy the industrialization and sustainable development needs and other advantages.According to the advantages and characteristics of steel-timber combined structure and the cold current structure system under the low-rise residential status, and then puts forward the "longevity" and "three sections" and passive as the representative of the low carbon design as the representative of humanized design concept, and combining Thomas Herzog’s two family house and Jishui experimental steel-timber combined structure house in Japanese as examples.Through the design of plane, space and outer resistance structure in steel-timber combined structure house, reflected on the low-carbon of idea concreteanalysis in these aspects of the design process. Through the plane of low rise residential buildings in cold, summed up the current cold low rise residentialproblems. Based on two kinds of design concept, study graphic design graphicdesign "temperature gradient on the cold low rise steel residential wood structure of "whole life cycle", also studied thermal environment design, the space of the wind environment design and "Kang" space design. The external retaining structure and energy consumption in producing the largest, by studying thetypes and spacing on the steel and wood structure wall structure, keel and insulation materials and the design of external windows and roofs, further proofenergy-saving low carbon design.Through the eQUEST software simulation, verified in the "standard model", the annual energy consumption to low-rise steel-timber combined structure housing in cold regions is smaller than the reinforced concrete structure in cold current structureunder the system of annual energy consumption. At the same time, the calculation formula of carbon emissions, according to the annual energy consumption simulation, calculate the carbon dioxide emissions in the "standard model" under the low rise steel residential wood structure "life cycle", and compared with the cold current structure, low carbon steel and wood structuresystem is verified from different stages in any step.Through the research to the design of the low-rise steel-timber combined structure housing in cold regions, and compare with the cold current structure system, from many points of view that low-rise steel-timber combined structure housing in cold regions, it has the great advantage of low carbon design, can become the development direction of low-rise house in the future in cold regions.