公路工程湿软黄土路基施工能耗和碳排放评估

Evaluation of energy consumption and carbon emissions for construction of wet and soft loess subgrade in highway engineering

公路工程湿软黄土路基施工会消耗大量的能源,并释放大量的二氧化碳等温室气体,对环境造成一定影响.正确评估各公路工程湿软黄土路基施工方案所产生的能耗和碳排放,对节能减排具有重要意义.基于此,从原材料的获取到施工项目的完成,采用相应的能源和碳排放评估模型,结合国内外的清单数据及规范定额,评估安临公路工程中3种湿软黄土路基施工方法(水泥搅拌桩、预应力混凝土管桩、EPS轻质路堤)的能耗和碳排放.对比分析之后,进一步阐明3种湿软黄土路基施工方法的优缺点.

The construction of wet and soft loess subgrade in highway engineering will consume a lot of energy and release a lot of greenhouse gases such as carbon dioxide,which will have a certain impact on the environment.Correctly assessing the energy consumption and carbon emissions generated by the construction plan of the wet and soft loess subgrade of each highway project is of great significance to energy saving and emission reduction.Based on this,from the acquisition of raw materials to the completion of the construction project,using corresponding energy and carbon emission assessment models combined with domestic and foreign inventory data and normative quotas,energy consumption and carbon emissions are evaluated for three wet and soft loess subgrade construction methods in the Anlin first-class highway project,which are cement mixing piles,prestressed concrete pipe piles,EPS lightweight embankments.After comparative analysis,the advantages and disadvantages of the three wet and soft loess subgrade construction methods are further clarified.