混凝土结构低碳设计理论前瞻  

Prospects for low-carbon design theory of concrete structures

作　　者：肖建庄[1,2,4,5] 夏冰[1] 肖绪文 李岩[3,4] 薛松涛[1,2] 周颖[1,2] 卢昱杰 许碧莞 Jianzhuang Xiao;Bing Xia;Xuwen Xiao;Yan Li;Songtao Xue;Ying Zhou;Yujie Lu;Biwan Xu(College of Ciwil Engineering,Tongji Universiy,Shanghai 200092,China;State Key Laboratory for Disaster Reducrion in Chil Engineering,Tongji University,Shanghai 200092,China;School of derospace Engineering and Applied Mechanics,Tongi University,Shanghai 200092 China;Key Laboralory of Adwanced Civil Engineering Materials,Ministry of Education,Tongji Universiny.Shanghai 201804,China;SKey Laboratory of Performance Evolurion and Control for Engineering Srrctures,Ministy of Education,Tongji Universioy,Shanghui 200092,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]同济大学土木工程防灾国家重点实验室,上海200092 [3]同济大学航空航天与力学学院,上海20092 [4]同济大学先进土木工程材料教育部重点实验室,上海201804 [5]同济大学工程结构性能演化与控制教育部重点实验室,上海200092

出　　处：《科学通报》2022年第28期3425-3438,共14页Chinese Science Bulletin

基　　金：国家杰出青年科学基金(51325802,11625210,52025083,59925820)资助。

摘　　要：国家“双碳”战略和建筑业低碳发展共识,呼唤混凝土结构的低碳设计理论,本文通过简述混凝土行业低碳转型的历史与趋势,提出气候变化挑战下混凝土结构-环境共生系统的设计新需求;在混凝土结构-环境动态耦合关系的量化表征中,剖析了低碳设计从考虑可持续性的结构可靠性设计,到以双向设计为特征的结构可持续性设计的演进,将现有混凝土结构可持续性相关分析与设计方法融入低碳设计范畴,为气候变化下混凝土结构生命周期内的低碳排放与可靠服役性能提供保障;为实施低碳设计调控,结合本团队十余年的理论探索与实践,构筑混凝土结构3R^+(C)减碳技术体系,挖掘现有典型低碳技术的减排潜力与推广前景,进一步,提出未来研究方向与建议,推动混凝土结构低碳设计创新发展与应用。Industrial civilization causes huge carbon emissions,accelerates climate change,and hinders the sustainable development of human society.The construction industry causes about 40%of annual global anthropogenic carbon emissions,within which the massive construction of concrete structures alone accounts for more than 10%of the global emissions.China's national goals for carbon peaking,neutrality,and the low-carbon development consensus call for the low-carbon design theory of concrete structures in the construction industry.Starting from the scientific issues with the concrete structure-environment symbiotic system,this paper clarifies the indicators,design methods and tuning means of low-carbon structural design,aiming to lay a foundation and provide suggestions for the development of low-carbon design,and promote the sustainable development of concrete industry.By briefly reviewing the history of the concrete industry,we llustrate the trend of low-carbon transitions,for which it is urgently needed to shift the perspective of structural design from only centering on human needs to meeting the sustainable needs of the integrated system of concrete structures and environments.Based on the characteristics of carbon emissions and uptake of concrete structures,the significance of regulating concrete structures'net embodied carbon emissions for climate change mitigation is clarified.Further,to cope with climate change,we put forward the scientific issues and design requirements for the concrete structure-environment symbiotic system.To facilitate the sustainable development of the concrete structure-environment symbiotic system,we focus the low-carbon design method on the quantitative characterization of structure-environment dynamic coupling.The structural sustainability indicator is established to simultaneously reflect the structural reliability and carbon emission level of concrete structures.Further,we sort out relevant evaluation and design methods into the evolution of low-carbon design from the structural relibi

关 键 词：混凝土结构 气候变化 碳排放 低碳设计理论 结构可持续性 结构-环境共生 

分 类 号：TU37[建筑科学—结构工程]