河北省高速公路桥梁建设减排效益分析

基于工程建设碳排放量评价的基本概念和理论框架，从原材料物化、运输和施工等阶段进行桥梁改扩建能耗一原材料碳排放效益研究，并对其节能减排进行量化分析计算，以此探究节能减排新材料的应用前景。最后，运用此方法对京石改扩建工程中的沙河特大桥工程的原材料物化、运输和施工阶段的碳排放量进行分析与评价，结果表明：主要的碳排放量来自原料物化阶段而非桥梁施工过程；高性能混凝土可以作为低碳原材料替代传统普通混凝土，既能满足工程质量需求，又能产生很好的经济效果。

Emission Reduction Benefits on Construction of Expressway Bridge in Hebei Province

Based on the basic concepts and theoretical framework of the evaluation of carbon emissions by project construction, through the materialization, transportation and construction of raw materials, the arti- cle studies the benefit for carbon emission of energy consumption-raw materials in bridge reconstruction and expansion, and makes the quantitative analysis of energy conservation and emissions reduction, in or- der to explore the application prospect of new materials for energy conservation and emissions reduction. Finally, using this method, it analyzes and evaluates the carbon emission in the materialization, transporta- tion and construction of raw materials in the bridge projects of Shi-An reconstruction project. The results show that the main carbon emissions are from materialization of raw materials rather than a bridge con- struction process; high performance concrete can replace traditional ordinary concrete as low carbon raw materials, which can not only meet the demand of engineering quality, but also can produce good econom- ic effect.