环境和经济的LCA 柔性强化解决方案的比较,用于一个强化混凝土梁
Pedro Frazão Pedroso1, João R Correia1, José D Silvestre1
1Civil Engineering Research and Innovation for Sustainability (CERIS), Department of Civil Engineering, Architecture and Environment, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal.
Materials (Basel, Switzerland)
|December 17, 2024
概括
本研究比较了四种混凝土梁强化方法. 对于环境影响,混凝土外套是最好的,而碳纤维增强聚合物 (CFRP) 条带是最具成本效益的.
科学领域:
- 土木工程 土木工程是指土木工程.
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 建筑业对全球经济增长做出了重大贡献,但对环境产生了重大影响.
- 需要可持续的康复解决方案来提高结构安全,减少废物和原材料的提取.
- 环境和经济上合理的康复战略对于利益相关者做出明智决策至关重要.
研究的目的:
- 评估和比较四种不同的钢筋混凝土梁强化解决方案的环境和经济影响.
- 根据多标准,灵敏度和生态成本分析,确定最佳的强化解决方案.
- 提供数据,以便在结构改造方面做出明智的决策.
主要方法:
- 进行了一项涉及现有钢筋混凝土梁的案例研究.
- 分析了四种强化解决方案:混凝土外套 (有或没有增加横截面) 和板粘合 (使用碳纤维增强聚合物 (CFRP) 条或钢板).
- 对环境和经济影响评估进行了摇篮到门的生命周期评估 (LCA),随后进行了多标准和灵敏度分析以及生态成本方法.
主要成果:
- 当优先考虑环境影响时,混凝土外显示出最佳的环境性能.
- 当成本是决定因素的主导因素时,CFRP条带的粘合成为最佳解决方案.
- 该研究提供了对评估的强化技术对环境和经济影响的全面比较.
结论:
- 选择最佳的结构强化解决方案取决于具体的优先事项,无论是环境影响还是经济成本.
- 通过精心挑选的强化方法,可以实现现有建筑群的可持续康复.
- 生命周期评估和多标准分析是评估和比较可持续建筑解决方案的有效工具.
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