Full Life-cycle Indicator Analysis Of Passive Timber Buildings In Sever Cold Region Based On Type Comparison

In the context of global energy conservation and emission reduction,"passive building" has become one of the building forms vigorously promoted by the construction industry because of its high climate adaptability,low energy consumption and low-carbon emission characteristics.As a typical traditional building type in China,wood frame building has good thermal properties,with the progress of building materials and construction and technology,passive wood frame building in China’s cold regions has a wide range of application value and prospects.This paper summarizes the characteristics of passive wood-frame buildings in cold regions,demonstrates the intrinsic coupling between wood-frame and passive buildings,quantifies the whole life cycle theory,constructs a whole life cycle comparison model between a typical wood-frame passive building and a concrete structure,extracts the two key aspects of carbon emission and cost in the whole life cycle study,and analyzes the application of passive wood-frame buildings in cold regions.Characteristics of Full Life Cycle Indicators in Buildings.This paper begins by examining the background of building energy efficiency and emission reduction,the real needs of passive building applications and the advantages of wood frame buildings.It analyzes the passive building design ideas,related technologies and parameters,and the passive building design standards in China’s cold regions;summarizes the characteristics of wood frame buildings in terms of space,structure and materials,and summarizes the advantages of wood frame buildings in passive construction;and presents evidence-based scientific research methods on whole life cycle theory.Further,a comparative analysis procedure between passive wood-frame buildings and concrete buildings in severe cold regions is constructed,a typical comparison model is established,and the passive performance is verified separately.On the basis of the bill of quantities and energy consumption data obtained from the model,the whole life cycle carbon emissions(LCA)prediction method and the whole life cycle building cost calculation(LCC)method are used to quantify the whole life cycle carbon emissions and building costs of passive wood-frame and concrete buildings in the phases of building materials preparation and construction,building use and maintenance,and building demolition.Analysis and research,according to the analysis and calculation results,to demonstrate the technical advantages of wood-framed passive buildings in terms of environmental protection,energy saving and economy.This paper adopts the research methods of literature study,simulation analysis and data calculation to quantitatively compare the whole life cycle of wood-frame passive buildings and concrete-frame passive buildings,and propose qualitative features and design strategies,and the results provide theoretical guidance and design reference for the study of passive buildings in severe cold regions,which has certain theoretical and application values.