{
    "identifier": "59145AB0040F183BE0531A5706818E571856",
    "accessLevel": "public",
    "contactPoint": {
        "hasEmail": "mailto:[email protected]",
        "fn": "Lisa Choe"
    },
    "programCode": [
        "006:045"
    ],
    "landingPage": "https:\/\/data.nist.gov\/od\/id\/59145AB0040F183BE0531A5706818E571856",
    "title": "Measurement of the Behavior of Steel Beams under Localized Fire Exposure",
    "description": "A total of nine localized fire tests on steel beams were designed and conducted in the National Fire Research Laboratory as part of its commissioning project, including thermal tests (Tests 1 through 5) and four-point bending test at ambient (Test 6) and elevated temperatures (Tests 7 through 9). All the tested specimens were nominally 6.2-m long W16\u00d726 beams made of ASTM A992 steel. Each specimen was supported by one of the two following connections: (i) simple support (Tests 1 through 8), and (ii) double-angles bolted to laterally braced support columns (Test 9). The midspan of each specimen was exposed to an open-flame fire using the 1-m2 natural gas burners. The burner was located 1.1 m below the bottom flange of the beam at midspan. A four-point flexural loading scheme was used to apply concentrated forces at two locations 2.44 m apart around midspan. The data included temperatures, the heat release rates from the burner, and structural measurements including forces, displacements and strains. The Type B standard uncertainties in various measurements were also included. Overall, the test results showed that the heating rate of the specimen was sensitive to the prescribed heat release rate-time relationship. However, the thermal gradient developed in the fire-exposed cross sections of the beam never achieved linearity under the localized fire exposure. Regardless of the connection types and fire conditions (i.e., steady-state or transient-state fire), the beams exhibited a similar behavior and failure mode. When subjected to combined fire and flexural loads, the beam specimens exhibited the lateral-torsional buckling followed by runaway vertical displacements at midspan. Additional details of experimental procedures and uncertainty analysis for this experimental series are provided in the following publications: 1) Zhang, C., Choe, L., Gross, J., Ramesh, S., Bundy, M. (2017). Engineering Approach for Designing a Thermal Test of Real-scale Steel Beam Exposed to Localized Fire. Fire Technology, Vol 53, Issue 4, pp 1535-1554. DOI: 10.1007\/s10694-016-0646-7 2) Choe, L., Ramesh, S., Zhang, C., Gross, J. (2016). The Performance of Structural Steel Beams Subjected to a Localized Fire. The 9th International Conference on Structures in Fire (SiF 16), June 8-10, 2016, Princeton, NJ.",
    "language": [
        "en"
    ],
    "distribution": [
        {
            "downloadURL": "https:\/\/s3.amazonaws.com\/nist-midas\/1856\/NFRL_LocalizedFireTest_SteelBeam_09012017.xlsx",
            "mediaType": "text\/plain"
        },
        {
            "downloadURL": "https:\/\/s3.amazonaws.com\/nist-midas\/1856\/NFRL_LocalizedFireTest_SteelBeam_09012017.xlsx.sha256",
            "mediaType": "text\/plain"
        },
        {
            "downloadURL": "https:\/\/s3.amazonaws.com\/nist-midas\/1856\/NFRL_LocalizedFireTest_SteelBeam_08112017.xlsx",
            "mediaType": "text\/plain"
        },
        {
            "downloadURL": "https:\/\/s3.amazonaws.com\/nist-midas\/1856\/NFRL_LocalizedFireTest_SteelBeam_08112017.xlsx.sha256",
            "mediaType": "text\/plain"
        },
        {
            "accessURL": "https:\/\/doi.org\/10.18434\/M37H4G"
        }
    ],
    "bureauCode": [
        "006:55"
    ],
    "modified": "2017-08-14 00:00:00",
    "publisher": {
        "@type": "org:Organization",
        "name": "National Institute of Standards and Technology"
    },
    "theme": [
        "Fire:Structural fire resistance"
    ],
    "keyword": [
        "steel beam; localized fire; thermal and mechanical behavior; experimental test"
    ]
}