服役桥梁拆解基本方法与资源化利用  

Basic deconstruction method and resource utilization for bridges in service

作　　者：肖建庄 周有威[1,3] 李文明 韩玉 闫强 何志芬 XIAO Jianzhuang;ZHOU Youwei;LI Wenming;HAN Yu;YAN Qiang;HE Zhifen(School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,Guangxi,China;College of Civil Engineering,Tongji University,Shanghai 200092,China;Institute of Science and Technology for Carbon Peak&Neutrality,Guangxi University,Nanning 530004,Guangxi,China;Guangxi Road and Bridge Engineering Group Co.,Ltd.,Nanning 530200,Guangxi,China;Pinglu Canal Group Co.,Ltd.,Nanning 530022,Guangxi,China;Guangxi Communications Design Group Co.,Ltd.,Nanning 530022,Guangxi,China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]同济大学土木工程学院,上海200092 [3]广西大学双碳科学与技术研究院,广西南宁530004 [4]广西路桥工程集团有限公司,广西南宁530200 [5]平陆运河集团有限公司,广西南宁530022 [6]广西交通设计集团有限公司,广西南宁530022

出　　处：《建筑科学与工程学报》2025年第2期142-152,共11页Journal of Architecture and Civil Engineering

基　　金：广西科技重大专项(AA23062022,AA23062054)。

摘　　要：为提高桥梁类工程拆除固废的资源化利用水平,实现服役桥梁结构拆解后的分级利用,针对现有桥梁过于粗放的拆除方式及固废未充分资源化利用的现状,从拆解设计、拆解工艺和资源化再利用等多角度,初步构建了以安全性为前提、层级资源化利用为目标的桥梁拆解理论技术体系,提出了桥梁拆解的安全性和再利用性原则,分析了桥梁拆解工艺与再利用性之间的联系,讨论了不同层级(材料、构件和结构)资源化利用的逻辑关联,总结了多种拆解工艺的优劣势并给出了今后桥梁拆解工艺的研究建议。以钦江沿线待拆解桥梁为例,基于安全的拆解设计和施工,依据桥梁结构特点实现了拆解桥梁的资源化再利用目标,提高了桥梁再利用水平和资源化利用效率。结果表明:采用拆解的策略实现桥梁的低损化解构有助于提升旧桥的资源化再利用水平;通过构建桥梁拆解与资源化利用技术框架,使桥梁建造由传统的单链范式转变为循环范式,可为未来桥梁的绿色低碳建造提供研究依据。To improve the waste resource utilization level of bridge deconstruction and realize the hierarchical utilization of bridges after demolition,faced with the rough demolition method and the underutilized status quo of waste resources for bridges in service,a theory and technology system of bridge deconstruction with safety as the primary prerequisite and hierarchical resource utilization as the goal was established from multiple perspectives of the deconstruction design,deconstruction technology and resource reuse.The principles of safety and reusability of bridge deconstruction were presented,and the links between bridge deconstruction methods and reusability were analyzed.In addition,the logical connections between the different levels(material,component and structure)of resource utilization were discussed,the advantages and disadvantages of various deconstruction methods were summarized and research suggestions for future bridge deconstruction methods were put forward.Taking the deconstructed bridges along the Qinjiang river as example,based on safe design and deconstruction of bridges,the target of resource reusability of bridge components was realized considering the characteristics of bridge structures,and the bridge reuse level and the resource utilization efficiency were improved.The results show that the deconstruction strategy achieving low damage deconstruction of bridges can help to improve the level of resource reuse of old bridges.By constructing a framework for bridge deconstruction and resource utilization,the bridge construction is transformed from the traditional single-chain paradigm to a cyclic one,providing a research basis for the green and low-carbon construction of future bridges.

关 键 词：桥梁结构 生命周期 拆解设计 拆解工艺 资源化利用 

分 类 号：TU997[建筑科学—市政工程]