中图分类号：TU71；X506 文献标志码：A 文章编号：2096-6717（2025）04-0172-11

Carbon emission tracking model for construction sites based on earnedcarbonvalues

SONG Guanghana，LU Yujiea，b，WANG Naa，LI Peixian c，d （20 （a.College of Civil Engineering；b.KeyLaboratoryofPerformanceEvolutionand Controlfor Engineering Structures ofMinistry of Education；c.College of Architecture and Urban Planning;d.China KeyLaboratoryof Ecology and Energy-saving Studyof Dense Habitat，MinistryofEducation，Tongji University，Shanghai 2Ooo92，P.R.China）

Abstract： Carbon emissions from construction sites exhibit distinct traits of spatial concentration and temporal intensity，which underscores the pressing need for effective monitoring and regulation of their environmental impacts.However，many constructionsite carbon assessments are carried out before or after project completion，with litle attention paid to monitoring environmental performance during the construction process. This paper develops a performance assessment model caled Earned Carbon Value Management （ECVM） based on construction quota theory， internet of things technology and earned value theory to assess the performance of carbon emissions during construction and improve the accuracy and eficiency of the carbon emissions management at construction sites.The model links construction carbon emissions with project completion volume and resource consumption，proposing thre key parameters and four key indicators.The development model was applied to aconstruction project ofa building in Shanghai，and the evaluation revealed thatat the 20- day mark of construction，the project had an emission variance （EV） of -105.46kgCO₂e ，while the schedule variance （SV） was -215kgCO₂e . This indicates significant delays in the current construction progress，with carbon emissions exceeding the allocated limit. However， when construction progressed to 30days ， the EV and SV of the project were -2 603.18kgCO₂e and 555.39kgCO₂e ，respectively. This demonstrates the positive impact of a moderate progress adjustment，resulting in effctive control of the construction schedule. Nevertheless，the carbon emissions still exceeded the allotted limit， necesitating further measures to mitigate carbon emisions.The case demonstrates that ECVM can analyze the relationship between construction progress and carbon emissions during the construction process analyze the causes of deviations and propose targeted corrective measures based on carbon emision performance indicators.The model presented in this paper is generic and can be used for any construction project that aims to reduce carbon emissions.

Keywords： construction carbon emission；earned carbon value management；construction progress；deviation management；construction machinery

在“双碳”目标背景下，施工机具碳排放精细化管理逐渐成为新的研究热点。建筑物化过程中温室气体排放集中且强度大，已有相关研究强调评估这一阶段碳排放的重要性[1-2]。建筑物化阶段的碳排放主要来源于建材消耗，其导致的隐含碳排放通常占整个物化阶段碳排放总量的 92%～94%^×3] ，已有很多学者关注施工建材的碳排特征和减碳方案[4-5]。除建材隐含碳排放外，施工机具的使用也将导致短时间段内大量温室气体排放。此外，智能建造的兴起导致自动化施工机具和信息化管控设备的应用逐渐增加，进而加剧了施工场地的上述排放。相比物化碳排放和运维碳排放，尽管建筑全生命周期由施工机具产生的碳排放占比较小，但面对当前中国基础设施不完善、还需进行长期投资建设的大背景，深入研究该类型碳排放特征、挖掘减排潜力并提出切实可行的减碳方案十分必要。

施工现场碳排放主要是由施工机具消耗能源所致，其碳排放量不仅受工程量的影响，还受到机具性能、台班安排、耗能类型等方面的影响。实现施工现场碳排放精细化管理的前提是实时定量化评估施工碳排放量。当前业界多关注施工前的碳排放配额和竣工后的碳排放结算，但对于施工过程中的碳排放评估关注不足。碳排放配额多根据工程量与施工定额进行估算，适用于施工前建设单位与设计单位对碳排放的前瞻把控[6]。……