Understanding and overcoming the barriers to structural steel reuse, a UK perspective
Understanding and overcoming the barriers to structural steel reuse, a UK perspective
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DOI：
10.1016/j.jclepro.2017.02.006
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发表时间：
2017-04
影响因子：
11.1
通讯作者：
D. Tingley;S. Cooper;Jonathan M. Cullen
中科院分区：
文献类型：
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作者：
D. Tingley;S. Cooper;Jonathan M. Cullen
为了在全球、国家和部门层面实现温室气体排放目标，应在建筑环境的具体碳和操作碳方面探索减少机会。减少隐含碳的一个未充分利用的选择是结构钢的再利用。然而，在英国，Sansom和Avery（2014）的研究表明重用水平正在下降。本文探讨了为什么会出现这种情况，通过一系列半结构化的采访，英国建筑业成员确定结构钢再利用的实际障碍。虽然有许多确定的障碍，但五个实际障碍被列为最重要的：成本，可用性/存储，没有客户需求，可追溯性和供应链差距/缺乏整合。这些与全球文献中最常见的问题形成对比：成本、供应链缺口/整合、风险、连接技术、复合结构和拆除时间;只有两个重叠：成本和供应链缺口/整合。文献中的许多障碍都有一个技术重点（减少回收率，而不是完全防止再利用），这与访谈优先考虑的主要是系统性障碍不同。这些系统性障碍需要首先得到解决，以提高再利用率。这将需要在整个英国建筑供应链中采取协调一致的方法。基于访谈的见解，本文提出了四种机制来克服这些系统性障碍：（1）创建供应商/重复使用部分可用性数据库，（2）展示客户需求，（3）建筑行业的技术指导和教育，（4）政府领导。这些机制将共同提高英国的再利用率，减少建筑环境的隐含排放，并在实现温室气体减排目标方面发挥关键作用。
To meet greenhouse gas emission targets, at global, national and sector level, reduction opportunities should be explored in both the embodied and operational carbon of the built environment. One underexploited option to reduce embodied carbon is the reuse of structural steel. However, in the UK, work by Sansom and Avery (2014) suggests a picture of declining levels of reuse. This paper explores why this is the case by identifying the practical barriers to structural steel reuse through a series of semi-structured interviews with UK construction industry members. Whilst there were many identified barriers, five practical barriers were prioritised as being most significant: cost, availability/storage, no client demand, traceability and supply chain gaps/lack of integration. These contrast with those most commonly identified in global literature: cost, supply chain gaps/integration, risk, jointing technique, composite construction and time for deconstruction; with only two overlaps: cost and supply chain gaps/integration. Many of the barriers from literature have a technical focus (reducing salvage yield rather than completely preventing reuse) differing from the largely systemic barriers that the interviews prioritised. These systemic barriers will need to be dealt with first to increase reuse rates. This will require a coordinated approach across the UK construction supply chain. Building on interview insights, this paper proposes four mechanisms to overcome these systemic barriers: (1) the creation of a database of suppliers/reused section availability, (2) a demonstration of client demand (3) technical guidance and education for the construction industry and (4) government leadership. Together these mechanisms would improve reuse rates in the UK, reduce the embodied emissions of the built environment and play a crucial role in meeting greenhouse gas emissions reduction targets.