Experimental study on progressive collapse resistance of corroded RC continuous deep flexural members

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-03-23 DOI:10.1016/j.engfailanal.2025.109543

Chao Bao , Huan Long , Xiaotong Ma , Ibrahim M.H. Alshaikh , Galal Al-Mekhlafi , Luyuan Peng , Huxiang Wang

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引用次数: 0

Abstract

Abnormal loads can induce localized damage, potentially triggering the progressive collapse of reinforced concrete (RC) structures, leading to casualty and severe economic loss. In coastal or high-salinity environments, harsh conditions accelerate structural degradation, compromising resistance to progressive collapse, primarily due to reinforcing bar corrosion caused by chloride infiltration. To investigate the impact of corrosive environments on the progressive collapse resistance of RC continuous deep flexural members, quasi-static testing was conducted on four scaled-down RC substructure specimens. Besides one control group specimen, the remaining three specimens underwent electrochemically accelerated corrosion at 3%, 9%, and 12% across the entire specimen area, respectively. Failure modes and internal force were analyzed and compared. The results show that damage in both corroded and uncorroded specimens was concentrated in the plastic hinge regions near the beam ends. Reinforcing bar corrosion significantly affected the compression arch mechanism and the catenary mechanism, reducing the bearing capacities of these two mechanisms by up to 12.0% and 16.0%, respectively.

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来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.