Machine learning-based framework for predicting the fire-induced spalling in concrete tunnel linings

IF 6.7 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
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Abstract

Fire-induced spalling in concrete is a serious issue in tunnel lining design because it can reduce the load-bearing capacity of the tunnel and the cross-section area of the tunnel lining. The adverse consequences of concrete spalling can cause serious damage to the tunnel lining or even failure occasionally. Hence, concrete spalling at elevated temperatures particularly explosive spalling must be properly assessed by considering it as a crucial factor for fire resistance in concrete tunnel lining designs. In the last several years, there has been a surge of scientific studies aimed at explaining why concrete spalls when exposed to fire. Despite these attempts, a current evaluation method that can reliably forecast the average depth of spalling of concrete tunnel lining has not yet been developed, and a comprehensive analysis of this phenomenon has not been completed. Many areas of structural engineering have benefited from the use of machine learning, but no one has yet attempted to use it to predict the spalling depth of concrete tunnel lining. Most sophisticated techniques in machine learning such as ensemble learning approaches have not been adopted. This study also addressed this issue by developing a database of 415 spalling test results under 16 input variables to provide predictions about the spalling depth of concrete tunnel lining using ensemble learning approaches such as Random Forest (RF), Categorical gradient boosting algorithm (Catboost), Light gradient boosting algorithm (LightGBM) and Extreme gradient boosting algorithm (XGBoost). This research developed a novel machine learning-based framework to predict the spalling behaviour in tunnel lining exposed to fire. Based on the conclusions, XGBoost demonstrated the highest performance in predicting spalling depth in concrete tunnel linings.

基于机器学习的混凝土隧道衬砌火灾诱发剥落预测框架
火灾引起的混凝土剥落是隧道衬砌设计中的一个严重问题,因为它会降低隧道的承载能力和隧道衬砌的横截面积。混凝土剥落的不良后果会对隧道衬砌造成严重损坏,甚至偶尔会导致隧道衬砌失效。因此,必须将高温下的混凝土剥落,尤其是爆炸性剥落,作为隧道混凝土衬砌设计中防火的一个关键因素进行适当评估。在过去的几年里,旨在解释混凝土遇火剥落原因的科学研究激增。尽管进行了这些尝试,但目前仍未开发出一种能够可靠预测混凝土隧道衬砌平均剥落深度的评估方法,对这一现象的全面分析也尚未完成。结构工程的许多领域都受益于机器学习的应用,但还没有人尝试用它来预测混凝土隧道衬砌的剥落深度。机器学习中最复杂的技术(如集合学习方法)尚未被采用。本研究也针对这一问题,开发了一个包含 16 个输入变量的 415 项剥落测试结果的数据库,利用随机森林 (RF)、分类梯度提升算法 (Catboost)、轻梯度提升算法 (LightGBM) 和极端梯度提升算法 (XGBoost) 等集合学习方法对混凝土隧道衬砌的剥落深度进行预测。这项研究开发了一种基于机器学习的新型框架,用于预测隧道衬砌在火灾中的剥落行为。根据研究结论,XGBoost 在预测混凝土隧道衬砌的剥落深度方面表现出最高的性能。
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来源期刊
Tunnelling and Underground Space Technology
Tunnelling and Underground Space Technology 工程技术-工程:土木
CiteScore
11.90
自引率
18.80%
发文量
454
审稿时长
10.8 months
期刊介绍: Tunnelling and Underground Space Technology is an international journal which publishes authoritative articles encompassing the development of innovative uses of underground space and the results of high quality research into improved, more cost-effective techniques for the planning, geo-investigation, design, construction, operation and maintenance of underground and earth-sheltered structures. The journal provides an effective vehicle for the improved worldwide exchange of information on developments in underground technology - and the experience gained from its use - and is strongly committed to publishing papers on the interdisciplinary aspects of creating, planning, and regulating underground space.
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