公路交通安全设施碳排估算方法研究

Study on Carbon Emission Estimation Method for Traffic Safety Facility

针对现阶段下交通安全设施碳排的全生命周期划分不清、核算主体异质性考虑不足等问题,提出了一种全生命视角下的公路交通安全设施碳排放模型。以常见的交安设施波形梁钢护栏为例,基于分种类、分阶段、分单元的计量方法,结合排放因子、工程量等实际因素,开展单位长度的全生命周期碳排放测算,并探索节能减碳可行路径。结果表明,材料生产阶段与运营养护阶段是最主要的碳排放来源,分别占全生命周期总碳排的88.19%与10.34%。发展低碳智能制造施工工艺、科学降低设施材料用量、强化老旧设施再利用、加大清洁能源的利用率,能够有效降低交安设施全生命周期碳排。

This study presents the comprehensive carbon emission model of traffic safety facilities,aiming to address the challenges related to the unclear allocation of carbon emissions throughout life cycle and the inadequate consideration of diverse accounting entities.Taking the common waveform beam steel guardrail as a case study,the measurement method was developed to calculate the carbon emissions per unit length throughout life cycle.The method incorporates sub-species,sub-phase,and sub-unit considerations,as well as factors(e.g.,emission factors,construction quantities,and other pertinent variables),which can help explore viable approaches for energy conservation and carbon reduction.The findings indicate that the material production stage and the operation and maintenance stage are primary contributors to carbon emissions,comprising 88.19%and 10.34%respectively of the total carbon emissions across the life cycle.The adoption of low-carbon intelligent manufacturing and construction technology,scientific reduction of material usage,increased reuse of existing facilities,and greater utilization of clean energy can significantly reduce carbon emissions from traffic safety facilities.