Fire tests on beams with class 4 cross-section subjected to lateral torsional buckling

This paper describes experimental research in behaviour of laterally unrestrained beams (I or H section) of Class 4 constant or variable cross-sections at elevated temperatures. Preparation and design of experiments is described. The design of the test set-up was made by FE modelling and the experiments followed. The test results are given. Future numerical investigation is planned for full understanding of the fire behaviour of steel members of Class 4 cross-sections considering both welded and hot-rolled I or H shape steel profiles

STRUCTURAL FIRE BEHAVIOUR OF Z PURLINS

Cold-formed sections are very common and efficient as secondary load-caring structural members. But the current European design standard EN 1993-1-2 sets the limiting temperature for the Class 4 sections to 350°C which is generallyvery conservative approach.This paper is focused on the thin-walled profilebehaviourin case offire. In particular, the paper describes transition from the beam to fibre behaviour of a Z purlin. A sophisticated shell element FE model is shown and compared to the test. Later, a more practical (Engineering) model neglecting the bending stiffness entirely is made and compared to the previous results. The conclusions show, that such simplified description of real behaviour is possible to be used after the bending capacity of the member is exceeded and predicts the forces to connection well

Class 4 sections at elevated temperature

The steel cross-sections behave stable or unstable. The behavior of slender cross sections of steel beams is influenced by local buckling. The buckling can be observed on beam web and/or flange and reduce the load bearing capacity of the beam. Design models adopted for daily design procedures are based on the so-called effective width approach. The design at fire situation is simplified which means that the same effective cross section as for cold design is used neglecting the changes of stiffness of steel. The research is focused on getting the knowledge of behaving of steel beams with welded Class 4 cross-sections exposed to high temperatures. This article describes the progress of the experiments

Fire-Retardant Facing Materials in Metro Construction

Import 26/06/2013Bakalářská práce se zabývá popisem a přehledem protipožárních obkladových materiálů, které se vyskytují v požární a stavební praxi a zejména pak při stavbě metra. V práci je řešena problematika návrhu a zvolení vhodného protipožárního obkladového materiálu v rámci stanice metra s ohledem na stanovené požadavky.This thesis deals with description and overview of fire covering materials, paints, coatings, which are found in the fire and building practice and especially in the construction of the metro. In my report is solved the problem of choosing suitable fire cladding material in the underground station with respect to the requirements.Prezenční030 - Katedra požární ochranyvelmi dobř

Industrial Floor Safety

Import 23/07/2015Jandera, M. Bezpečnost průmyslových podlah. VŠB - TU Ostrava. Fakulta bezpečnostního inženýrství. Diplomová práce se zabývá přehledem bezpečnostních požadavků na průmyslové podlahy. Jsou zde uvedeny materiálové a technologické rozlišení průmyslových podlah. Dále práce popisuje zásady podlahových úprav požárních schodišť z požárně bezpečnostního hlediska. Cílem práce je sumarizace a hodnocení bezpečnostních požadavků na průmyslové podlahy s důrazem na požární bezpečnost a návrh inovace.Jandera M. Industrial safety floors. VŠB - TU Ostrava. Faculty of Safety Engineering. This thesis review of the safety requirements for industrial floors. They are listed here material resolution and technological industrial floors. It also describes the principles floor finishes fire escapes from fire safety point of view. The assignment is to summarize and assess security requirements for industrial floors with an emphasis on fire safety.030 - Katedra požární ochranyvelmi dobř

Manual de diseño para acero inoxidable estructural

El acero inoxidable se emplea en un amplio abanico de aplicaciones estructurales en ambientes agresivos en los que se requiere garantizar un comportamiento adecuado durante largos períodos de tiempo con niveles mínimos de mantenimiento. Además, el acero inoxidable presenta un aspecto atractivo, es resistente a la vez que ligero, muy dúctil y versátil en términos de manufactura. Este Manual de Diseño proporciona expresiones de dimensionamiento para aceros inoxidables austeníticos, dúplex y ferríticos. Las reglas están en sintonía con las modificaciones propuestas en 2015 sobre el Eurocódigo para el acero inoxidable estructural, EN 1993-1-4. Este Manual de Diseño cubre el cálculo de secciones transversales, elementos, uniones y el cálculo a temperaturas elevadas, así como nuevos métodos de cálculo que consideran los efectos del endurecimiento por deformación, característicos del acero inoxidable. Se proporcionan también guías para la selección de grados, durabilidad y fabricación. Finalmente, el Manual cuenta con quince ejemplos de cálculo que ilustran la aplicación de las reglas de dimensionamiento.Postprint (published version

Design manual for structural stainless steel

Stainless steel is used for a wide range of structural applications in aggressive environments where reliable performance over long periods with little maintenance is required. In addition, stainless steel has an attractive appearance, is strong yet still light, highly ductile and versatile in terms of manufacturing. This Design Manual gives design rules for austenitic, duplex and ferritic stainless steels. The rules are aligned to the 2015 amendment of the Eurocode for structural stainless steel, EN 1993-1-4. They cover the design of cross-sections, members, connections and design at elevated temperatures as well as new design methods which exploit the bene cial strain hardening characteristics of stainless steel. Guidance on grade selection, durability and fabrication is also provided. Fifteen design examples are included which illustrate the application of the design rules.edition: 4thstatus: publishe

Design manual for structural stainless steel

Stainless steel is used for a wide range of structural applications in aggressive environments where reliable performance over long periods with little maintenance is required. In addition, stainless steel has an attractive appearance, is strong yet still light, highly ductile and versatile in terms of manufacturing. This Design Manual gives design rules for austenitic, duplex and ferritic stainless steels. The rules are aligned to the 2015 amendment of the Eurocode for structural stainless steel, EN 1993-1-4. They cover the design of cross-sections, members, connections and design at elevated temperatures as well as new design methods which exploit the beneficial strain hardening characteristics of stainless steel. Guidance on grade selection, durability and fabrication is also provided. Fifteen design examples are included which illustrate the application of the design rules.Postprint (published version