| When actively promoting green building, how to scientifically and accurately evaluate and recognized green building will be an important issue of theoretical research and practical operation at the same time. Green building is an important indicator of energy conservation and emissions reduction, which can accurately measure the carbon emissions and determine the effect of energy conservation and emissions reduction. It is an effective tool for quantitative evaluation of green buildings.Construction, which is energy intensive and highly polluting, needs to explore the theory and method of green low carbon energy saving and emission reduction. While construction stage is the main and the most complex stage and its energy consumption is very high, so scientific quantitative analysis of carbon emissions is needed to provide theoretical basis and application methods of implementation for our country to develop green construction and carry on green construction.After the study of existing research literature at home and abroad and summarizing the main steps of the construction carbon footprint calculation, this paper have designed the construction main function module of carbon footprint calculator on the basis of the existing calculator. During specific implementation process, the first step is to determine the boundary on the basis of study of carbon sources by looking for information, doing research report and holding a seminar detailed to scrutiny carbon source in the process of construction.Then it uses the discharge coefficient method for the calculation of carbon emissions. But because discharge coefficient is not consistent with the results at home and abroad and the studies of discharge coefficient of construction industry is fewer, so the coefficient of carbon emissions requires a large number of research, and make sure that the final carbon emission coefficient can guarantee validity and authority. Finally, construction carbon footprint calculation model is established, then use the acquired data to calculate carbon footprint and analyze the results to produce big emissions in all kinds of statements. This can provide a reference for reducing carbon emissions. And now we have construction scheme optimization, machinery and equipment plan optimization and structure optimization, but there were no carbon plan optimization. As the country actively promoting green building, green construction, energy conservation and emissions reduction will become the important factors affecting construction scheme.Therefore, this research results can provide quantitative for the construction phase of carbon emissions calculation method. Using calculate existing software and the result of construction carbon emissions calculation can make predictions for construction carbon emissions. After collecting on-site data also can calculate the real-time field of carbon emissions, which can provides a workable method for monitoring and management of carbon emissions. At the same time, due to the carbon footprint of every construction project can be determined, the government can included it into the carbon market to promote every construction project to explore the potential to reduce emissions, and finally achieve energy conservation and emissions reduction and virtuous circle. |