As a large-scale urban infrastructure,the carbon emissions generated by the subway construc-tion process cannot be ignored,so it is necessary to calculate and analyze the carbon footprint of the sub-way construction process.This paper takes a subway section in Qingdao with shield construction technolo-gy as an example,and constructs a carbon emission model in physicochemical stage based on the whole life cycle evaluation method.The results show that the highest proportion of carbon emission in the physi-cal and chemical stage of the whole subway section is the production stage of precast components,and the production of concrete and steel bars is the main link to produce carbon dioxide.Based on the results,the use of recycled building materials to replace some concrete and steel bars in the production stage of prefabricated components can effectively reduce the total carbon emissions of the whole process,and sug-gest possible directions for carbon reduction in the future.
关键词
碳排放/地铁/盾构/物化阶段/节能减排
Key words
carbon emission/metro/shield/physicochemical stage/energy conservation and emission reduction
维普
万方数据