Whole Life Cycle Carbon Emissions Research Of Industrialized Precast Construction

Construction industry is the consume large amounts of natural resources and at the expense of a heavy environmental burden, according to the statistics:40% of the total construction activity using the natural resources,40% of the total energy, caused by the construction waste also accounted for 40% of total human activities create waste, construction of 2030 greenhouse gas is expected to account for 25% of the emissions in the whole society.Therefore, the construction of low carbon emission reduction is imminent.As on the change of mode of production has innovation significance of technology innovation, industrial production mode is an important way for energy saving and emission reduction, and its development prospect is very broad;At the same time, the construction of industrialization has become the trend and necessity of building.However, due to the real market environment, based on relatively deep industrialization is still in its infancy architectural practice, thus a targeted related research on energy saving and emission reduction is not enough even blank.Under this background, the study of industrialized building carbon emissions is more practical significance.This article first to the industrialized building development at home and abroad and analyzing the present situation and problems of carbon emissions;Secondly, from the basic, building carbon emissions research, building carbon emissions model analysis, low carbon building evaluation four aspects launches the research about the present situation of domestic and international carbon emissions;Among them, the carbon emissions basic research including carbon policy, standard, evaluation method, energy carbon emission factor, building materials, equipment, carbon emissions factors and carbon emissions calculation software;Building carbon emissions including life cycle model analysis and the whole life cycle in different stages of the proportion of carbon emissions;Through the above background research to sort out the existing problems, and put forward the research goal and research content.For the aim of this article, from the building carbon emissions based on the theory of the full life cycle assessment for basic research and traditional way to build the whole life cycle of building carbon emissions model from two parts;The first part mainly includes the whole life cycle assessment theory, the whole life cycle of building carbon emissions evaluation theory and basic research building carbon emissions;And the second part of the traditional construction mode of whole life cycle of building carbon emissions to carry on the summary, space-time matrix calculation model, build carbon source for scrutiny, in different stages of the clear carbon emissions measurement and measurement list, summary of carbon emissions data source and carbon reduction measures;And the different structure types, structure materials of building carbon emissions analysis evaluation.On this basis,the above problem.Built in the traditional way of building carbon emissions model, based on the contrast the difference between the traditional construction mode and industrialization production mode, combining the characteristics of the precast pattern of industrialization;By identifying the target range, inventory analysis, impact assessment and results explain four aspects to establish a system based on the full process control, the industrialization of the lifecycle carbon emissions precast construction evaluation model;After the concrete is divided into two sections:carbon emissions accounting model and evaluation;Carbon accounting model including basic database framework, based on BIM industrialized building data information database, and the calculation method of each stage, and redrew the stages of its life cycle;Evaluation for specific carbon source, influence factors of industrialized precast construction carbon reduction measures.Last part to light building system for example, lightweight portable aluminum alloy in different stages of the whole life cycle of residential buildings in the empirical analysis, including carbon emissions accounting, impact assessment (LCIA), and in view of the low carbon design specific carbon source, so as to establish a complete set of lightweight building system of low carbon building carbon emissions evaluation guidelines and accounting form system.This paper constructs the new industrialized precast construction evaluation model of the whole life cycle of carbon, has realized the visualization of low carbon buildings, controllable, intelligent and operational, not only for light industrial precast housing system provides the whole life cycle of a low carbon construction technology security, will also be the healthy and rapid development of China’s other low carbon buildings provide strong theoretical basis and practical guidance.