387 documents found, page 1 of 39
Fire after earthquake assessment of 3D reinforced concrete structures
Haouach, Ismail; Kada, Abdelhak; Lamri, Belkacem; Piloto, P.A.G.Despite that, an earthquake’s occurrence can lead to dramatic effects with significant damage in urban areas, including human and material losses. Fire after an earthquake amplifies the overall impact and becomes a catastrophic event. Most constructions in Algeria are made of reinforced concrete, and current regulations overlook fires after earthquakes. Structural designs are inadequate to handle such events. T...
Fire resistance of ultra-high-strength steel columns using different heating rates
Piloto, P.A.G.; Pereira, Arthur Silva; Mottin, Artur CaronFeatured Application Numerical results to determine the fire resistance of ultra-high-strength steel using different heating rates.Abstract Ultra-High-Strength Steel (UHSS) offers several advantages over normal carbon steel, promoting exceptional strength, reducing self-weight, improving fire resistance, enhancing durability, and reducing material consumption. These advantages result in cost savings and sustain...
Bending resistance of austenitic stainless steel hollow sections at elevated te...
Piloto, P.A.G.; Mesquita, L.M.R.; Cruz, Áureo A.T.; Lopes, Nuno; Arrais, Flávio; Real, Paulo VilaThe present research aims to increase the knowledge of the structural behaviour of stainless steel members under fire. Eight experimental bending tests at elevated temperatures (500, 700 ºC) built with RHS 150×100×3 austenitic stainless-steel beams, using two different grades (1.4301, 1.4571) also known as 304 and 316Ti, are presented. Both grades 1.4301 (X5CrNi18–10) and 1.4571 (X6CrNiMo17–12–2) have almost th...
Numerical Investigation on the Fire Resistance of Partially Encased Steel Columns
Hoffstaeter, Ricardo Anderson; Piloto, P.A.G.; Martins, Carlos Humberto; Rigobello, RonaldoThis paper presented the results of numerical analyses on the fire resistance of composite columns with partially encased steel columns (PEC). This investigation used 2D and 3D finite element models and assessed for the design method of composite elements under compression according to the Annex G of Eurocode 4. New proposals were presented to determine the buckling resistance of PEC under standard fire. The 2D...
Fire resistance of austenitic stainless steel beams with rectangular hollow sec...
Lopes, Nuno; Arrais, Flávio; Real, Paulo Vila; Alves, Matheus Henrique; Mesquita, L.M.R.; Piloto, P.A.G.; Pinho-da-Cruz, JoaquimThis paper presents a study on the structural behaviour of stainless steel profiles under fire conditions. An experimental campaign of three-point bending tests on rectangular hollow section beams of the grade 1.4301 (also known as 304) were conducted, considering both steady-state and transient state conditions. Prior to those tests, the mechanical characterization of the stainless steel was investigated. The ...
Numerical study of the fire behaviour of external walls in light steel framing
Torres, Leonardo; Couto, Carlos; Vila Real, Paulo M.M.; Piloto, P.A.G.This study focuses on the fire behaviour of external walls in Light Steel Frame (LSF) structures. Previous investigations have primarily addressed the fire behaviour of internal wall configurations, however, the increasing number of fires affecting external walls shows that their behaviour must also be understood. Therefore, this work investigates the fire behaviour of these elements, presenting a numerical stu...
Light timber framed wall under fire: effect of the load and cladding
Piloto, P.A.G.; Vergara, DiegoLight Timber Frame Walls are made of solid timber elements and are usually protected by cladding materials (gypsum). This investigation finds the effect of different load levels and cladding systems on the fire resistance. The timber frame structure is made with three studs and two rails, and will be analysed with two different protection levels. The computational model includes the thermal analysis under stand...
Accuracy of 2D numerical models towards the prediction of the fire resistance o...
Piloto, P.A.G.; Gomes, Stephan; Torres, Leonardo; Couto, Carlos; Real, Paulo VilaLightweight steel framing (LSF) walls are commonly used in modern buildings due to their high strength-to -weight ratio and readiness for installation. However, empty cavities within these walls can pose a fire risk if not properly addressed. In order to ensure the fire resistance and performance of LSF walls with empty cavities, various modelling techniques can be employed. Two-dimensional thermal models can a...
Finite-element analysis for the performance of steel frames under fire after ea...
Merouani, Mohammed Redha; Kada, Abdelhak; Lamri, Belkacem; Piloto, P.A.G.Recent events of fire after an earthquake (FAE) show that this is a frequent dual event leading to a significant loss which can only be reduced by increasing the level of safety. This paper presents numerical models developed for FAE analyses on 24 steel portal frames to investigate their behaviour and estimate the performance in terms of ratios with regard to horizontal displacement, fire resistance time, and ...
Numerical investigation on the fire resistance of partially encased steel columns
Hoffstaeter, Ricardo Anderson; Piloto, P.A.G.; Martins, Carlos Humberto; Rigobello, RonaldoThis paper presented the results of numerical analyses on the fire resistance of composite columns with partially encased steel columns (PEC). This investigation used 2D and 3D finite element models and assessed for the design method of composite elements under compression according to the Annex G of Eurocode 4. New proposals were presented to determine the buckling resistance of PEC under standard fire. The 2D...