Load-Displacement Assessment of One-Way Reinforced Concrete (RC) Slabs Externally Strengthened Using CFRP Strips under Blast Loads

Mourão, Rodrigo; Maazoun, Azer; Teixeira-Dias, Filipe; Vantomme, John; Lecompte, David

doi:10.3390/icem18-05435

Cited by 3 publications

(2 citation statements)

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“…The use of fibre reinforced polymers (FRP) in other construction methods, such as reinforced concrete, has been a first choice for strengthening elements under blast loading (Mourão, 2020;Mourão et al, 2018). Its potential to strengthening timber elements was investigated by Lacroix and Doudak (Lacroix and Doudak, 2020a, 2020b, 2022Lacroix and Doudak, 2018a, 2018b, 2018cLacroix and Doudak, 2020a, 2020b, 2022.…”

Section: The Replacementmentioning

confidence: 99%

Blast resistance of timber structural elements: A state-of-the-art review

Mourão¹,

Caçoilo

Teixeira-Dias

et al. 2022

International Journal of Protective Structures

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The response of structures subject to impulsive loads remains a field of intense research. Whilst traditional construction materials, such as steel and concrete/masonry, have been the focus of most studies, further research on the performance of alternative materials for blast-resistant applications has been driven by their growing use in sustainable construction. Over the last years, engineers have been re-evaluating the use of timber as a prime construction material for a range of building types, from small office to high-rise residential buildings. As a result, there is now a growing need to study the blast resistance of timber structures, as they may become potential targets of terrorist attacks or being placed in the blast-radius of other critical buildings. A review of existing research on the blast resistance of timber structures is presented and key factors on the blast analysis and design of such structures are discussed. Most of the research has been conducted on light-frame wood stud walls, glued- and cross-laminated timber, and addresses material properties under high strain rates, typical failure modes, behaviour of structural connections and retrofitting solutions. Failure modes are reported to be highly dependent on the element layout and manufacturing aspects, and dynamic increase factors for the modulus of elasticity and maximum strength in the ranges of [1.05, 1.43] and [1.14, 1.60], respectively, have been proposed for different timber elements. Mechanical connectors play a significant role in dissipating energy through plastic deformation, as the brittle nature of timber elements compromises the development of their full capacity. Regardless the element type, SDOF models can accurately predict the dynamic response as long as idealised boundary conditions can be considered. Overall, although a good amount of research is available, more extensive research is needed to guide the design and engineering practice and contribute to the development of design codes and testing standards for timber structures under blast loading.

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Section: The Replacementmentioning

confidence: 99%

Blast resistance of timber structural elements: A state-of-the-art review

Mourão¹,

Caçoilo

Teixeira-Dias

et al. 2022

International Journal of Protective Structures

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“…Throughout history, the examination of the repercussions of explosions on buildings, crucial structural elements, and individuals has primarily been a concern for the military or industrial sectors. This is due to the considerable risks involved and the stringent regulations regarding the handling and detonation of explosive products [1][2][3]. In modern times, the need for research and development in impact resistance and blast mitigation for engineering structures has become crucial due to various incidents such as accidental explosions, deliberate blasts, and detonations that occur in both civilian and military environments.…”

Section: Introductionmentioning

confidence: 99%

A Concise Overview of Numerical Simulation Tools and Techniques for Anti-Explosion Response Prediction of Infrastructures and Facilities

Anas,

Al-Dala’ien,

Tahzeeb

et al. 2023

E3S Web Conf.

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In the wake of recent devastating explosions, like the tragic blast in Lebanon’s Beirut City, there has been a growing recognition of the need for blast-resistant design. Previously, this type of design was mainly reserved for critical infrastructures such as embassies and military facilities. However, the destructive power unleashed by these incidents has highlighted the importance of implementing blast-resistant measures in a wider range of buildings and infrastructure. The focus is now shifting towards incorporating blast-resistant features into various types of structures to enhance public safety and minimize the devastating impact of future explosive events. Collapse of infrastructures in the surrounding area of the explosion and the potential damage to buildings located at significant distances has raised serious concerns among structural engineers regarding the safety of infrastructures and facilities when subjected to explosive detonations. The level of devastation caused by the explosion can differ, spanning from reparable damage to total structural failure, leading to loss of life. Some engineers propose that buildings in areas prone to vulnerability or affected by war should be constructed with the ability to withstand explosive detonations, in order to prioritize the safety of human lives and preserve the integrity of the infrastructure. This article provides a concise overview of the latest advancements in numerical simulation tools and methodologies for predicting the response of infrastructures and facilities to explosions. It covers topics such as structural responses, pressure-impulse diagrams, existing design methods, and various numerical simulation tools and methodologies. The article also delves into the challenges faced in modeling blast scenarios and analyzing structural responses using different numerical methods. Additionally, it offers recommendations for overcoming these difficulties.

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