A probabilistic approach for risk assessment of moisture-related degradation of building envelopes

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-27 DOI:10.1177/17442591241261078

Bona Ryan, David N. Bristow, P. Mukhopadhyaya

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引用次数: 0

Abstract

The performance and durability of wood-frame building envelopes is affected by long-term moisture transport and its impact. Despite considerable progress in deterministic and prescriptive methodologies aimed at estimating moisture deposition and the consequent risk of mold growth, a consensus in methodology applicable to the analysis of moisture risk in building enclosures is an unfinished agenda. This might partly be caused by uncertainties that exist due to variations in input parameters, model structure, and data scarcity. To address this issue, this study presents a probabilistic risk assessment of building envelope deterioration from moisture accumulation. The proposed methodology integrates the development of meta-models, a full-factorial response surface methodology, and Bayesian analysis. The effectiveness of the proposed approach is demonstrated through a parametric analysis of typical wall assemblies featuring diverse layers and boundary conditions. The findings highlight the influence of input variables and their relative significance on moisture accumulation in the selected climate zones. Additionally, a sensitivity analysis of model parameters and the application of Bayesian analysis in specific contexts are presented, facilitating comparative evaluation of moisture-related risk of building envelopes.

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建筑围护结构受潮退化风险评估的概率方法

木结构建筑围护结构的性能和耐久性受到长期湿气迁移及其影响的影响。尽管在估算湿气沉积和随之而来的霉菌生长风险的确定性和规范性方法方面取得了很大进展，但在适用于建筑围护结构湿气风险分析的方法上达成共识仍是一项未完成的议程。造成这种情况的部分原因可能是输入参数、模型结构和数据稀缺造成的不确定性。为解决这一问题，本研究提出了一种对建筑围护结构因湿气积聚而恶化的概率风险评估方法。所提出的方法综合了元模型开发、全因子响应面方法和贝叶斯分析。通过对具有不同层和边界条件的典型墙体组件进行参数分析，证明了所提方法的有效性。研究结果强调了输入变量的影响及其对选定气候区湿度累积的相对重要性。此外，还介绍了模型参数的敏感性分析以及贝叶斯分析法在特定情况下的应用，从而有助于对建筑围护结构的湿气相关风险进行比较评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.