公路工程绿色低碳施工方案评价——基于“碳中和”与造价双目标  

Evaluation of Green and Low-Carbon Construction Scheme of Highway Engineering Based on Double Objectives of“Carbon Neutralization”and Cost

作　　者：李红镝 周韵梓 LI Hongdi;ZHOU Yunzi(School of Economics and Management,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学经济与管理学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2023年第7期106-112,共7页Journal of Chongqing Jiaotong University(Natural Science)

摘　　要：公路工程绿色低碳施工能够有效减少环境污染,但是建设工程中某一单位工程的施工方案无法实现“碳中和”,只能面向“碳中和”的低碳排放形成施工方案,同时也必须坚持合理造价控制下的绿色低碳施工方案。笔者从碳中和理念以及施工方案的造价成本双目标研究公路工程施工方案,将公路工程施工系统类比为耗散系统,根据“碳中和”理念,引入正负熵值模型,根据对施工系统的影响类型,将碳排放和造价成本解释为施工系统正熵值,将碳吸收解释为施工系统负熵值;根据模型公式运用PSR模型建立了基于“碳中和”理念的公路工程绿色低碳施工评价指标体系,得到正负熵值模型所需权重,从而计算施工系统总熵值,对比不同施工方案的施工系统熵值大小,综合分析比较施工方案的造价成本以及绿色低碳两方面的影响,设立3个情景对施工方案进行评价进而选出总体占优的施工方案。研究结果表明:使用生态砌块预制件的施工方案的施工总熵值小于使用传统预制件的施工总熵值,前者施工方案更加契合“碳中和”与造价双目标。Green and low-carbon construction of highway engineering can effectively reduce environmental pollution.However,the construction scheme of a unit project in the construction project cannot achieve“carbon neutralization”and can only form a construction scheme for low-carbon emissions that are“carbon neutralization”.At the same time,it is necessary to adhere to a green and low-carbon construction plan under reasonable cost control.The highway engineering construction scheme was studied from the double objectives of carbon neutralization concept and cost of construction scheme,and the highway engineering construction system was compared to a dissipative system.According to the concept of“carbon neutralization”,a positive and negative entropy model was introduced.Based on the type of impact on the construction system,carbon emissions and cost were interpreted as positive entropy values of the construction system,and carbon absorption was interpreted as negative entropy values of the construction system.According to the model formula,the PSR model was used to establish the evaluation index system of green and low-carbon construction of highway engineering based on the concept of“carbon neutralization”,and the weights required by the positive and negative entropy model were obtained.The total entropy of the construction system was thereby calculated,and the entropy values of different construction schemes were compared.The impacts of cost and green and low-carbon of construction scheme were comprehensively analyzed and compared,and three scenarios were established to evaluate the construction scheme,and then the overall superior construction scheme was selected.The research results show that the total entropy value of the construction scheme using ecological block prefabricated parts is less than that of the construction scheme using traditional prefabricated parts,and the former construction scheme is more consistent with the double objectives of“carbon neutralization”and cost.

关 键 词：公路工程 施工耗散系统 碳中和理念 绿色低碳施工方案 正负熵值模型 

分 类 号：U415.1[交通运输工程—道路与铁道工程]