EN 13381-9:2015
(Main)Test methods for determining the contribution to the fire resistance of structural members - Part 9: Applied fire protection systems to steel beams with web openings
Test methods for determining the contribution to the fire resistance of structural members - Part 9: Applied fire protection systems to steel beams with web openings
This European Standard specifies a test and assessment method for determining the contribution made by fire protection systems to the fire resistance of structural steel beam I and H members in the horizontal plane containing openings in the web which may affect the structural performance of the beam. This European Standard applies to beams subject to 3 or 4 sided fire exposure.
For any beam with a single web opening or where the web openings are considered to be of small diameter in relation to the web depth the applicability of this European Standard needs to be determined by a structural engineer.
This European Standard applies to fire protection materials that have already been tested and assessed in accordance with EN 13381 4 or EN 13381-8. i.e. this European Standard cannot be used in isolation. Use of this European Standard requires the multi-temperature analysis (MTA) derived from EN 13381 4 or EN 13381 8 as the basis for determining thickness for beams with web openings. This MTA needs to be carried out on the web and bottom flange separately generating an elemental multi-temperature analysis (EMTA). The bottom flange EMTA may be used as the top flange EMTA when a beam is subject to 4 sided exposure.
This European Standard contains the fire test methodology, which specifies the tests which need to be carried out to provide data on the thermal characteristics of the fire protection system, when exposed to the standard temperature/time curve specified in EN 1363 1.
This European standard also contains the assessment, which prescribes how the analysis of the test data should be made and gives guidance on the procedures which should be undertaken.
The assessment procedure is used to establish:
a) on the basis of the temperature data derived from testing unloaded steel sections, the thermal response of the fire protection system on cellular beams (the thermal performance);
b) the temperature ratio between the web post and the web reference temperature, which will vary depending on the web post width;
c) the temperature ratio between points around the web openings and the web reference area.
d) The elemental multi temperature analysis from either EN 13381 4 or EN 13381 8 needs to be reassessed and reported against elemental A/V for each fire resistance period.
e) A structural model needs to be used to derive limiting temperatures for cellular beams using the data from b), c) and d) above.
Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden Bauteilen - Teil 9: Brandschutzmaßnahmen für Stahlträger mit Stegöffnungen
Diese Europäische Norm legt ein Prüf- und Beurteilungsverfahren zur Bestimmung des Beitrages von Brand-schutzsystemen zum Feuerwiderstand von tragenden Stahlträgern mit I- und H-Profilen in der horizontalen Ebene fest, die Öffnungen im Steg aufweisen, die die bautechnische Leistungsfähigkeit beeinflussen können. Diese Europäische Norm gilt für Träger, die an 3 oder 4 Seiten der Brandeinwirkung ausgesetzt sind.
Für Träger mit einer einzelnen Öffnung im Steg oder bei denen der Durchmesser der Stegöffnungen im Ver¬hältnis zur Stegtiefe als klein gilt, muss die Anwendbarkeit dieser Europäischen Norm durch einen Tragwerks¬planer bestimmt werden.
Diese Europäische Norm gilt für Brandschutzmaterialien, die bereits nach EN 13381 4 oder EN 13381 8 geprüft und bewertet wurden, d. h. diese Europäische Norm kann nicht losgelöst davon angewendet werden. Für die Anwendung dieser Europäische Norm ist die aus EN 13381 4 oder EN 13381-8 abgeleitete Mehrfachtemperaturanalyse (MTA) als Grundlage für die Bestimmung der Brandschutzdicke für Träger mit Stegöffnungen erforderlich. Diese MTA muss am Steg und am Unterflansch getrennt durchgeführt werden, was zu einer elementaren Mehrfachtemperaturanalyse (EMTA) führt. Die EMTA für den Unterflansch darf bei Trägern, die einer 4 seitigen Brandeinwirkung ausgesetzt sind, als EMTA für den Oberflansch verwendet werden.
Diese Europäische Norm enthält eine Methodik für Brandprüfungen, die die Prüfungen beschreibt, die zur Ermittlung von Daten über die thermischen Eigenschaften des Brandschutzsystems bei Beanspruchung unter den Bedingungen der Einheits-Temperaturzeitkurve nach EN 1363-1 durchzuführen sind.
Diese Europäische Norm enthält darüber hinaus die Beurteilung, die festlegt, wie die Analyse der Messwerte durchgeführt werden sollte, sowie Hinweise zu den anzuwendenden Verfahren.
Das Verfahren der Beurteilung wird angewendet, um:
a) auf der Grundlage der Temperaturmesswerte, die sich aus den Prüfungen von unbelasteten Stahlprofilen ergeben, das thermische Verhalten des Brandschutzsystems auf Lochstegträgern zu ermitteln (ther¬mische Leistungsfähigkeit);
b) das Verhältnis der Temperatur des Stegpfostens zur Bezugstemperatur des Stegs, das in Abhängigkeit von der Breite des Stegpfostens schwankt, zu ermitteln;
c) das Verhältnis der Temperatur der Punkte um die Stegöffnungen herum zur Temperatur im Bezugs¬bereich des Stegs zu ermitteln.
d) Die elementare Mehrfachtemperaturanalyse entweder aus EN 13381 4 oder EN 13381 8 muss erneut bewertet und im Vergleich zum elementaren A/V-Verhältnis für jede Feuerwiderstandsdauer angegeben werden.
e) Es ist ein Strukturmodell zu verwenden, um die Grenztemperaturen für Lochstegträger anhand der vorstehenden Angaben aus b), c) und d) abzuleiten.
Méthodes d'essai pour déterminer la contribution à la résistance au feu des éléments de construction - Partie 9: Systèmes de protection au feu appliqués aux poutres alvéolaires en acier
La présente Norme européenne spécifie une méthode d'essai et d'évaluation permettant de déterminer la contribution des systèmes de protection au feu à la résistance au feu des éléments en I et en H des poutres en acier de construction dans le plan horizontal contenant des ouvertures dans l'âme susceptibles d'affecter la performance structurelle de la poutre. La présente Norme européenne s'applique aux poutres soumises à une exposition au feu sur 3 ou 4 côtés.
Pour les poutres ayant une seule ouverture d'âme ou dont les ouvertures d'âme ont un petit diamètre par rapport à la hauteur de l'âme, l'applicabilité de la présente Norme européenne doit être déterminée par un ingénieur en construction.
La présente Norme européenne s'applique aux matériaux de protection au feu qui ont déjà été soumis à l'essai et évalués conformément à l'EN 13381 4 ou à l'EN 13381-8, ce qui signifie que la présente norme ne peut pas être utilisée isolément. L'utilisation de la présente Norme européenne nécessite d'employer l'analyse de plusieurs températures (MTA) tirée de l'EN 13381 4 ou de l'EN 13381 8 comme base de la détermination de l'épaisseur à appliquer aux poutres alvéolaires. Cette MTA doit être conduite séparément sur l'âme et sur la semelle inférieure en générant une analyse élémentaire de plusieurs températures (EMTA). L'EMTA de la semelle inférieure peut être utilisée comme l'EMTA de la semelle supérieure lorsqu'une poutre est soumise à une exposition sur les 4 côtés.
La présente Norme européenne contient la méthodologie d’essai au feu, qui spécifie les essais devant être réalisés pour fournir des données sur les caractéristiques thermiques du système de protection au feu lorsqu’il est exposé à la courbe normalisée température/temps spécifiée dans l’EN 1363 1.
La présente Norme européenne comprend également l'évaluation qui prescrit la façon d'effectuer l'analyse des données d'essai et spécifie les lignes directrices des modes opératoires qu'il convient d'entreprendre.
Le mode opératoire de l'évaluation permet d'établir :
a) d'après les températures tirées des essais effectués sur des petits tronçons d'acier non chargés, la réponse thermique du système de protection au feu sur les poutres alvéolaires (les performances thermiques) ;
b) le rapport de températures entre la température de la membrure pleine et la température de référence de l'âme, qui variera en fonction de la largeur de la membrure pleine ;
c) le rapport de températures entre les points situés autour des ouvertures d'âme et la surface de référence de l'âme.
d) L'analyse élémentaire de plusieurs températures issue de l'EN 13381 4 ou de l'EN 13381 8 doit être réévaluée et rapportée en fonction du facteur de massiveté élémentaire A/V pour chaque durée de résistance au feu.
e) Un modèle structurel doit être utilisé pour déduire les températures limites des poutres alvéolaires à l'aide des données tirées de b), c) et d) ci-dessus.
Preskusne metode za ugotavljanje prispevka k požarni odpornosti konstrukcijskih elementov - 9. del: Požarno zaščitni sistemi za jeklene nosilce z odprtinami v stojini
Ta evropski standard določa metodo za preskušanje in oceno za ugotavljanje prispevka požarno zaščitnega sistema k požarni odpornosti konstrukcijskih jeklenih nosilcev I in H z odprtinami v stojini v vodoravnem položaju. Ta standard se uporablja za nosilce, ki so izpostavljeni ognju iz 3 ali 4 strani.
Ta standard se uporablja za protipožarne materiale, ki so že bili preskušeni in ocenjeni v skladu s standardoma EN 13381-4 ali EN13381-8. tj. standard prEN 13381-9 ne sme biti uporabljen samostojno. Uporaba standarda prEN 13381-9 zahteva multitemperaturno analizo (MTA) iz standarda EN 13381-4 ali EN 13381-8 kot osnovo za določanje debeline nosilcev z odprtinami v stojini. Analizo MTA je treba izvesti v stojini in spodnji prirobnici ter v obeh primerih ustvariti elementarno multitemperaturno analizo (EMTA). EMTA spodnje prirobnice se lahko uporabi kot EMTA zgornje prirobnice, če je nosilec izpostavljen ognju iz štirih strani.
Ta evropski standard vključuje metodologijo preskušanja požarne varnosti, ki določa preskuse, ki jih je treba opraviti za pridobitev podatkov o toplotnih lastnostih sistema protipožarnega varstva v času izpostavljenosti standardni krivulji temperatura-čas, določeni v standardu EN 1363-1.
Ta evropski standard prav tako vsebuje presojo, ki predpisuje način analiziranja podatkov preskusa, in navodila o postopkih, ki jih je treba izvesti.
Postopek ocenjevanja se uporablja za ugotavljanje:
a) toplotnega odziva požarno zaščitnega sistema na celične nosilce (toplotno delovanje) na podlagi podatkov o temperaturi, pridobljenih pri preskušanju delovanja neobremenjenih profilov;
b) toplotnega razmerja med temperaturo stojine in referenčno temperaturo stojine, ki niha glede na širino stojine;
c) temperaturnega razmerja med točkami okoli odprtin v stojini in referenčnim področjem stojine;
d) elementarne multitemperaturne analize iz standarda EN 13381-4 ali EN 13381-8, ki jo je treba znova oceniti in o njej poročati v povezavi z elementarnim A/V za vsako obdobje požarne odpornosti.
Strukturni model je treba uporabiti za določanje mejnih temperatur za celične nosilce z uporabo podatkov iz b), c) in d) zgoraj.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.RQVWUXNFLMVNLKVWRMLQLPrüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden Bauteilen - Teil 9: Brandschutzmaßnahmen für Stahlträger mit StegöffnungenMéthodes d'essai pour déterminer la contribution à la résistance au feu des éléments de construction - Partie 9: Systèmes de protection au feu appliqués aux poutres alvéolaires en acierTest methods for determining the contribution to the fire resistance of structural members - Part 9: Applied fire protection systems to steel beams with web openings13.220.50Požarna odpornost gradbenih materialov in elementovFire-resistance of building materials and elementsICS:Ta slovenski standard je istoveten z:EN 13381-9:2015SIST EN 13381-9:2015en,fr,de01-september-2015SIST EN 13381-9:2015SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13381-9
June 2015 ICS 13.220.50; 91.080.10 English Version
Test methods for determining the contribution to the fire resistance of structural members - Part 9: Applied fire protection systems to steel beams with web openings
Méthodes d'essai pour déterminer la contribution à la résistance au feu des éléments de construction - Partie 9: Systèmes de protection au feu appliqués aux poutres alvéolaires en acier
Prüfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden Bauteilen - Teil 9: Brandschutzmaßnahmen für Stahlträger mit StegöffnungenThis European Standard was approved by CEN on 20 May 2015.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13381-9:2015 ESIST EN 13381-9:2015
Determination of Product Thickness on Beams with Web Openings . 30 A.1 Purpose . 30 A.2 Background . 30 A.3 Overview of structural geometry . 30 A.4 Interaction with EN 13381-4 and EN 13381-8 . 32 A.5 Steel temperature distribution . 32 A.6 Structural analysis of the beam design . 32 A.7 Determination of fire protection thickness . 37 A.7.1 Product specific analysis on the basis of a specified critical temperature . 37 A.7.2 Iterative protection thickness analysis . 37 A.7.3 Iterative steel temperature analysis . 37 A.8 Structural models . 37 Annex B (informative)
The logic for determining the web post average temperature . 38 Bibliography . 40
on the basis of the temperature data derived from testing unloaded steel sections, the thermal response of the fire protection system on cellular beams (the thermal performance); b) the temperature ratio between the web post and the web reference temperature, which will vary depending on the web post width; c) the temperature ratio between points around the web openings and the web reference area; d) the elemental multi temperature analysis from either EN 13381-4 or EN 13381-8 needs to be reassessed and reported against elemental A/V for each fire resistance period; e) a structural model needs to be used to derive limiting temperatures for cellular beams using the data from b), c) and d) above. SIST EN 13381-9:2015
3.1.2.1 reactive materials materials that are specifically formulated to provide a chemical reaction upon heating such that their physical form changes and in so doing provide fire protection by thermal insulative and cooling effects SIST EN 13381-9:2015
m Width of beam flanges D
m Depth of beam tw
m Thickness of web tf
m Thickness of flanges 4 Test equipment 4.1 General The furnace and test equipment shall conform to that specified in EN 1363-1. 4.2 Furnace The furnace shall be designed to permit the dimensions of the test specimens to be exposed to heating, to be as specified in 6.2 and their installation within the test furnace to be as specified in Clause 6. 4.3 Test conditions A number of short steel beams all containing web openings and protected by the fire protection system shall be heated in a furnace according to the protocol given in EN 1363-1 and Clause 7. Where several test specimens are tested simultaneously, care shall be taken that each is adequately and similarly exposed to the specified test conditions. The procedures given in EN 1363-1 shall be followed in the performance of this test unless specific contrary instructions are given. SIST EN 13381-9:2015
Table 2 — Up to and including 90 min fire protection Beam Ref Plate Girder dimensions (mm) Web post width (mm) Cell Opening Type 6 600x170x15x10 130 Circular 160 Circular 7 600x170x15x10 160 Circular 225 Circular 8 600x170x15x10 130 Circular 225 Circular 9 600x170x15x10 500 Rectangular 10 600x170x15x10 130 Rectangular 225 Rectangular
NOTE In Tables 1, 2 and 3, it is acceptable to test additional specimens with a narrower web post if required. 6 Installation of the test specimens 6.1 Fixing Each unloaded beam test specimen shall be bolted to the soffit of the furnace cover slabs using appropriate diameter studs welded to the beam. There shall be a suitable steel plate beneath the locking nut. Each specimen shall be provided with a layer of ceramic fibre insulation board placed between the soffit and the top flange of the beam. This insulation material shall have an uncompressed thickness of (30 ± 5) mm and a nominal density of (125 ± 25) kg/m3. This insulation shall have a width equal to the width of the top flange of the steel beam (see Figure 4) Alternative insulation materials of Class A1 complying with the requirements of EN 13501-1 may be used provided they have similar thermal properties and thickness to the specified ceramic fibre insulation. 6.2 Installation pattern A typical test specimen installation pattern useable in a 4 m by 3 m furnace is given in Figure 5. Beams shall have a spacing of a minimum 450 mm from flange toe to flange toe and away from the furnace lining by a minimum of 300 mm as shown in Figure 5. 6.3 Furnace Load In order to ensure that the specified furnace temperature/time relationship is complied with and to avoid test specimens being affected by adjacent specimens and other obstacles it may be necessary to control the amount of steel within the furnace. SIST EN 13381-9:2015
the individual results of all furnace temperature measurements and the mean of all individual furnace temperature measurements, taken as specified in EN 1363-1, graphically presented and compared with the specified requirements and tolerances given in EN 1363-1; c) the individual results of all furnace pressure measurements and the mean of all individual furnace pressure measurements, taken as specified in EN 1363-1, graphically presented and compared with the specified requirements and tolerances given in EN 1363-1; d)
the weighted mean steel temperature of each web post as defined in 10.2 and the mean steel temperature of the bottom flange shall be tabulated; e) the steel temperatures at all the additional thermocouple positions shall be tabulated; f) the mean steel temperature of the web reference area shall be tabulated. Observations of the behaviour of the test specimens shall be made and the time at which they occur shall be recorded. Only data maintained in the laboratory files shall be used in the assessment. 10 Assessment 10.1 General The temperature data obtained from the steel sections is used as the basis for relating each web post temperature and the temperatures recorded by the additional thermocouples to the web reference temperature at the required fire performance period. This standard defines test packages to suit the required fire performance period as given in 5.4.4. SIST EN 13381-9:2015
for web post width 100 mm ++=(Temp at Position
Ax37.5)(Temp at Position
Cx37.5)(Temp at Position
Bx25)100Web post temperature b)
for web post width 130 mm ++=(Temp at PositionAx45)(Temp at Position Cx45)(Temp at Position Bx40)130Web post temperature c)
for web post width 160 mm (++=(Temp
at Position Ax 50)(Temp at Position Cx50)(Temp at Position Bx60)160Web post temp d)
for web post width 225 mm ++=(Temp
at
Position Ax 50)(Temp
at
Position Cx50)(Temp
at
Position Bx 125) 225Web
post
temp e)
for web post width 500 mm +++=(Temp
at
Position Ax 50)(Temp
at
Position Dx50)(Temp
at
Position Bx 200) (Temp
at
Position C x 200)500Web
post
temp. Positions are shown in Figure 6 f)
the web reference temperature is calculated as the average of the four thermocouples referred to in 7.3.3. 10.3 Determination of web post lines The web post line shall be based on the ratio of the web post temperature to the web reference temperature; for the maximum required fire performance period. There shall be a separate web post line plot for both circular and rectangular web posts. Where there is more than one web post of the same width then the mean of the individual ratios shall be determined. This ratio is then plotted against web post width see Figure 8. If the web post ratio is less than 1 then the web post ratio for web posts greater than this shall equal 1. The web post ratio shall increase with a decrease in web post width. If any point does not satisfy this criteria then it shall be replaced by the ratio of the next lowest web post width, unless this point is the narrowest web post in which case you shall revert to the next highest web post ratio. As a minimum requirement, the average bottom flange temperature shall not reach 575°C before it is in within 15 % of the required period of fire performance. No upper limit has been set in this respect, as the web post to web reference temperatures will be taken when the bottom flange has reached 575°C and not when the predicted period of fire performance has been reached. This will ensure that no benefit will be gained from over-application of the protection system. A single fire test at maximum fire resistance period may be used to determine a web post line for all fire resistance periods below by taking the worst case individual ratio of the mean web post temperature to the web reference temperature for each fire resistance period compared to the ratio of the mean web temperature to the web reference temperature at the maximum fire resistance period achieved. SIST EN 13381-9:2015
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