Thermomechanical performance of offshore topside steel structure exposed to localised fire conditions

The concept of fire safety covers an extremely vast scope of issues. To ensure an adequate fire safety level, it is necessary to combine research and actions in several fields, such as the mathematical, physical, or numerical modelling of a fire phenomenon. Another problem is to design different types of fire protection, including alarm systems, sprinkler systems, and also roads and evacuation systems, in a manner that ensures maximum safety for the building’s users. A vital issue is the analysis of the static-strength response of the structure under fire conditions. This study, concerned with such analyses, is limited to steel truss structures. In technical approvals, manufacturers of fire-proofing materials do not account for the character of the performance of individual structural members. The components in compression need thicker insulation than those in tension. This phenomenon is related to the fact that under fire conditions, the flexural buckling coefficient in compressed members is abruptly reduced with an increase in temperature. In turn, this increase in temperature leads to a fast reduction in resistance. In addition, members in tension have much higher resistance than those in compression in the basic design situation, i.e., at the instant of t = 0 min. Consequently, even a considerable decrease in the resistance of tension members is not as dangerous as that of compression members. Therefore, due to the nature of the performance of individual elements, fire-proofing insulation of every steel structure should be computationally verified. Additionally, in this paper, the influence of the type of fire insulation on the mechanical response of the structure was investigated. Calculations were carried out for different types of sprayed-on insulation, and also for contour and box insulation panels. The graphs show the behaviour of the elastic modulus, the yield point, and the resistance of the elements in the successive minutes of the fire for the different methods of fire protection used. The best results were obtained for vermiculite and gypsum spray.

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Design Study of Steel Structure Fire-Retardant Coatings under High Temperature (Fire) Conditions

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.594-597.849 ◽

2012 ◽

Vol 594-597 ◽

pp. 849-859

Author(s):

Man Li Ou ◽

Wei Jun Cao ◽

Long Min Jiang ◽

Hui Cao

Keyword(s):

Mechanical Properties ◽

High Temperature ◽

Fire Resistance ◽

Fire Protection ◽

Structural Damage ◽

Fire Retardant ◽

Steel Structure ◽

Steel Structures ◽

Strength And Stiffness ◽

Fire Conditions

As the result of great changes occurring to mechanical properties under high temperature (fire) conditions, steel structures will soon lose the strength and stiffness and lead to structural damage. Through analysis of the steel structure fire resistance design methods under the conditions of high temperature (fire), this article explores the most used fire protection methods in steel structures—brushing or painting fire-resistant coatings, studies the fire-resistance theory of steel structure under fire conditions; in addition, the author proposes the reasonable thickness of the steel structure fire retardant coating of fire-resistant design through design examples.

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Finite element analysis on temperature field of long-span steel structure under fire conditions

Fourth International Conference on Advances in Steel Structures ◽

10.1016/b978-008044637-0/50152-9 ◽

2005 ◽

pp. 1035-1040

Author(s):

Y BAI ◽

Y SHI ◽

Y WANG

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Temperature Field ◽

Steel Structure ◽

Element Analysis ◽

Long Span ◽

Fire Conditions

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INVESTIGATION ACTIVITY ABOUT A COLLAPSED STEEL STRUCTURE SUBJECTED TO A REAL FIRE, Fire scenarios and structural behaviour of a real steel structure

Applications of Structural Fire Engineering ◽

10.14311/asfe.2015.019 ◽

2016 ◽

Author(s):

Iolanda Del Prete ◽

Nicola Di Fiore ◽

Emidio Nigro ◽

Luca Ponticelli ◽

Giovanni Di Stefano

Keyword(s):

Steel Structure ◽

Zone Model ◽

Structural Behaviour ◽

Fire Load ◽

Fire Event ◽

Load Models ◽

Fire Scenarios ◽

Steel Sections ◽

Model Approach ◽

Fire Conditions

The paper describes the behaviour ofa real steel structure collapsed under a fire event. 3D structural analyses were performed with SAFIR program (J-M Franssen, 2005). Different modellingare implemented with some fire load models and analyses of thebehaviour of the whole structure. The main purpose of this work was to investigate the failure types of a warehouse structure under fire conditions. Different fire conditions were applied to the steel frame sections, with ISOcurve (ISO EN 834-8:2002) and zone model approach. The analyses show that with unprotected steel sections, horizontal structures are more critical than columns. Trough applying a performance basedapproach,structure has 30 minutes of fire resistance.

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Analysis of the load-carrying capacity of a steel frame under fire conditions

Scientific Journal of the Military University of Land Forces ◽

10.5604/01.3001.0011.7367 ◽

2018 ◽

Vol 187 (1) ◽

pp. 129-139

Author(s):

Piotr Bilko ◽

Szymon Sawczynski

Keyword(s):

Stress Analysis ◽

Carrying Capacity ◽

Steel Structure ◽

Steel Structures ◽

Load Carrying Capacity ◽

Structural Members ◽

Basic Principles ◽

Load Carrying ◽

Strain Stress ◽

Fire Conditions

This article aims at presenting the basic principles of designing steel structures according to Eurocode PN-EN 1993-1-2, i.e. with respect to ensuring the appropriate level of safety for such structures in case of a fire developing into flashover. The load-carrying capacity of a steel structure, serving as an example, was assessed on the basis of a static strain-stress analysis. The analysis was conducted regarding changes in the temperature of structural members, both the exposed and the fireproof protected ones, under fire conditions.

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Influence of Zinc Coating to a Temperature of Steel Members in Fire

Journal of Structural Fire Engineering ◽

10.1260/2040-2317.6.2.141 ◽

2015 ◽

Vol 6 (2) ◽

pp. 141-146

Author(s):

Jiri Jirku ◽

Frantisek Wald

Keyword(s):

Fire Test ◽

Zinc Coating ◽

Steel Structure ◽

Testing Procedure ◽

Surface Emissivity ◽

Steel Members ◽

Zinc Coated Steel ◽

Coated Surface ◽

In Fire ◽

Fire Conditions

This paper describes effect of hot dip galvanizing of steel structure surfaces to temperature of steel members in the fire conditions. Temperature of the set of specimens was measured during the second fire test at experimental building in Veseli nad Luznici. Experiment results show, that the zinc coating can reduce temperature in steel members especially in the first fifteen minutes of the fire. The paper describes specimens, which were used for fire test, shows testing procedure and compares measured temperatures of specimens with and without zinc coated surface. The paper also describes the process of analytical evaluation and based on the results of this evaluation specifies value of the surface emissivity for zinc coated steel members in the fire conditions.

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Regeneration of a historic city block: the example of the relocation of the historic Atelier building to the cloister area of the Congregation of the Resurrection in Krakow

Urban Development Issues ◽

10.2478/udi-2019-0018 ◽

2019 ◽

Vol 63 (1) ◽

pp. 77-86 ◽

Cited By ~ 1

Author(s):

Bogusław Podhalański ◽

Anna Połtowicz

Keyword(s):

Twentieth Century ◽

Cultural Heritage ◽

Steel Structure ◽

City Block ◽

Raising Awareness ◽

Straight Line ◽

Heritage Buildings ◽

Heritage Building ◽

Historic City ◽

The City

Abstract The article discusses a project that features the relocation of the historic Atelier building, built by Krakow-based architect Wandalin Beringer (1839–1923) who was active in the early twentieth century, and the regeneration of a plot belonging to the Congregation of the Resurrection since 1885, which is located at 12 Łobzowska Street in Krakow. The method includes cutting the entire structure off at the foundation and then after reinforcing it with a steel structure transporting it in its entirety to the new location. The project included two possible variants of moving the building in a straight line, either by 21 or 59 metres and evaluates two projects of further regeneration, the adaptive reuse of the building as an exhibition and religious space as well as a proposal for the remodelling of the nearby plot that belongs to the Congregation into a space for meditation and as a recreational park. The aim of these measures is to prevent the demolition of this building, now over a century old, as a result of which a forgotten element of the cultural heritage of the city will be saved. This project was based on the results of analyses of the cultural and historical conditions of Krakow. The block of buildings in which the Atelier in question is located is a very attractive location, near to the very centre of Krakow, adjacent to residential, service and educational buildings. It is directly adjacent to the Monastery Complex of the Congregation of the Resurrection, listed as a heritage building under conservation protection (municipal registry of heritage buildings). In the second half of the twentieth century, the building was used as a workroom by artists such as Xawery Dunikowski and later by the sculptress Teodora Stasiak. The case of the Atelier may provide an inspiration for discussion as well as raising awareness among citizens and city authorities to avoid future situations in which cultural heritage may become forgotten or demolished.

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