陕南山区预应力混凝土箱梁桥碳排放分析及优化研究  

Carbon Emission Analysis and Optimization of Prestressed Concrete BoxGirder Bridge in Mountainous Region of Southern Shaanxi

作　　者：熊治华 刘宏宇 朱铭宇 李耀禹 韩瑞霖 李晓璐 XIONG Zhihua;LIU Hongyu;ZHU Mingyu;LI Yaoyu;HAN Ruilin;LI Xiaolu(College of Water Resources and Architectural Engineering,Northwest A&F University,Xianyang,Shaanxi 712100,China)

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西咸阳712100

出　　处：《施工技术（中英文）》2023年第23期90-97,共8页Construction Technology

基　　金：中央高校基本科研项目(Z111022001);大学生创新创业训练项目(X202210712126)。

摘　　要：在陕西省留坝县侯镇张良庙至营盘公路改建工程新建桥梁中,构建了陕南山区现浇预应力混凝土箱梁桥的全生命周期碳排放核算模型,通过融合考虑碳排放与造价双变量,对桥梁运营阶段及拆除阶段的节能减排措施可行性做出分析,并进一步研究碳排放总量的波动性。研究发现,在陕南山区现浇箱梁桥全生命周期各阶段中,碳排放量及造价最多的是材料生产运输阶段,因此,减少现浇混凝土桥梁的碳排放量应考虑控制建材工艺等。为兼顾碳排放及造价取得均衡效果,构建碳排放量与工程造价双因素评判曲线,综合考虑桥梁全生命周期建设方案的经济性和可持续发展性。In the reconstruction project of Zhangliangmiao to Yingpan Road in Hou Town,Liuba County,Shaanxi Province,a life cycle carbon emission accounting model for cast-in-place prestressed concrete box girder bridge in the mountainous area of southern Shaanxi province is established.By integrating carbon emissions and costs,this study analyzed the feasibility of energy-saving and emission-reducing measures during the operation and demolition stages of the bridge,as well as investigated the variability of total carbon emissions.It was discovered that,material production and transportation accounted for the highest carbon emissions and costs throughout the entire life cycle of cast-in-place box girder bridges in southern Shaanxi's mountainous region.Therefore,reducing carbon emissions from these types of concrete bridges should focus on controlling building materials and processes.To achieve a balanced outcome considering both carbon emissions and costs,a two-factor evaluation curve was constructed based on project cost and carbon emission levels,ensuring comprehensive consideration for economic viability and sustainable development throughout all stages of bridge construction.

关 键 词：绿色建筑 公路 桥梁 碳排放 全生命周期 造价 

分 类 号：U445[建筑科学—桥梁与隧道工程]