Effects of the structural strength of fire protection insulation systems in offshore installations
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Mineral wool is an insulation material commonly used in passive fire protection (PFP) systems on offshore installations. Insulation materials have only been considered functional materials for thermal analysis in the conventional offshore PFP system design method. Hence, the structural performance of insulation has yet to be considered in the design of PFP systems. However, the structural elements of offshore PFP systems are often designed with excessive dimensions to satisfy structural requirements under external loads such as wind, fire and explosive pressure. To verify the structural contribution of insulation material, it was considered a structural material in this study. A series of material tensile tests was undertaken with two types of mineral wool at room temperature and at elevated temperatures for fire conditions. The mechanical properties were then verified with modified methods, and a database was constructed for application in a series of nonlinear structural and thermal finite-element analyses of an offshore bulkhead-type PFP system. Numerical analyses were performed with a conventional model without insulation and with a new suggested model with insulation. These analyses showed the structural contribution of the insulation in the structural behaviour of the PFP panel. The results suggest the need to consider the structural strength of the insulation material in PFP systems during the structural design step for offshore installations.
Abstract
Mineral wool is an insulation material commonly used in passive fire protection (PFP) systems on offshore installations. Insulation materials have only been considered functional materials for thermal analysis in the conventional offshore PFP system design method. Hence, the structural performance of insulation has yet to be considered in the design of PFP systems. However, the structural elements of offshore PFP systems are often designed with excessive dimensions to satisfy structural requirements under external loads such as wind, fire and explosive pressure. To verify the structural contribution of insulation material, it was considered a structural material in this study. A series of material tensile tests was undertaken with two types of mineral wool at room temperature and at elevated temperatures for fire conditions. The mechanical properties were then verified with modified methods, and a database was constructed for application in a series of nonlinear structural and thermal finite-element analyses of an offshore bulkhead-type PFP system. Numerical analyses were performed with a conventional model without insulation and with a new suggested model with insulation. These analyses showed the structural contribution of the insulation in the structural behaviour of the PFP panel. The results suggest the need to consider the structural strength of the insulation material in PFP systems during the structural design step for offshore installations.
참고문헌 (34)
- Achenbach, M., "Identification of the thermal properties of concrete for the temperature calculation of concrete slabs and columns subjected to a standard fire : methodology and proposal for simplified formulations", Fire Saf. J, 87, pp.80~86 (2017)
- ASTM International, "C209-15, Standard Test Methods for Cellulosic Fiber Insulating Board", Annual Book of ASTM standards, ~ (2015)
- Bedon, C., "Experimental and numerical analysis of in-plane compressed unprotected log-haus timber walls in fire conditions", Fire Saf. J, 107, pp.89~103 (2019)
- Bozzolo, A., "Numerical methodology for thermal-mechanical analysis of fire doors", 10th European LS-Dyna Conference (2015)
- Buchanan, A. H., "Structural Design for Fire Safety" (2017), John Wiley & Sons
- Buska, A., "The compressive strength properties of mineral wool slabs : influence of structure anisotropy and methodical factors", J. Civ. Eng. Manag, 13(2), pp.97~106 (2007)
- Buska, A., "Effect of dynamic load on value of point load of mineral wool boards", Mater. Sci, 14(3), pp.268~272 (2008)
- CEN, "Eurocode 3: Design Of Steel Structures - Part 1-2: General Rules - Structural Fire Design. BS EN 1993-1-2", European Committee for Standardization, ~ (2003)
- CEN, "Eurocode 5: Design Of Timber Structures - Part 1-2: General Rules - Structural Fire Design. BS EN 1995-1-2", European Committee for Standardization., ~ (2004)
- Chapelle, L., "Characterization and Modelling of the Mechanical Properties of Mineral Wool", PhD, pp.2016
- De Boer, J. G. G. M., "Two-way coupled CFD fire and thermomechanical FE analyses of a self-supporting sandwich panel façade system", Fire Saf. J, 105, pp.154~168 (2019)
- DNV, "Sloshing analysis of LNG membrane tanks", DNV Classification Notes 30(9), ~ (2006)
- Emberley, R., "Description of small and large-scale cross laminated timber fire tests", Fire Saf. J, 91, pp.327~335 (2017)
- Hopkin, D. J., "Full-scale natural fire tests on gypsum lined structural insulated panel(SIP)and engineered floor joist assemblies", Fire Saf. J, 46(8), pp.528~542 (2011)
- ISO, "Fire Resistance Tests: Elements of Building Construction. ISO 834:2014", International Organization for Standardization, ~ (2014)
- Jiang, J., "Thermal performance of composite slabs with profiled steel decking exposed to fire effects", Fire Saf. J, 95, pp.25~41 (2018)
- Kakogiannis, D., "Blast performance of reinforced concrete hollow core slabs in combination with fire : numerical and experimental assessment", Fire Saf. J, 57, pp.69~82 (2013)
- Kim, B. J., "Experimental study on impact damage of membrane-type LNG carrier cargo containment system due to dropped objects", Ships Offshore Struct, 13(Suppl. 1), pp.339~347 (2018)
- Kontogeorgos, D. A., "Experimental investigation of the fire resistance of multi-layer drywall systems incorporating vacuum insulation panels and phase change materials", Fire Saf. J, 81, pp.8~16 (2016)
- Landucci, G., "Design and testing of innovative materials for passive fire protection", Fire Saf. J, 44(8), pp.1103~1109 (2009)
- Lee, S. E., "Nonlinear impact response analysis of LNG FPSO cargo tank structures under sloshing loads", Ships Offshore Struct, 10(5), pp.510~532 (2015)
- Leisted, R. R., "Experimental study on the influence of different thermal insulation materials on the fire dynamics in a reduced-scale enclosure", Fire Saf. J, 93, pp.114~125 (2017)
- Lineham, S. A., "Structural response of fire-exposed cross-laminated timber beams under sustained loads", Fire Saf. J, 85, pp.23~34 (2016)
- LSTC, "User's Manual for LS-DYNA. Livermore Software Technology Corporation", ~ (2018)
- Lucherini, A., "Experimental study of the performance of intumescent coatings exposed to standard and non-standard fire conditions", Fire Saf. J, 95, pp.42~50 (2018)
- Paik, J. K., "Ultimate Limit State Analysis and Design of Plated Structures" (2018), John Wiley & Sons
- Paik, J. K., "Nonlinear structural analysis of membrane-type LNG carrier cargo containment system under cargo static pressure loads at the cryogenic condition with a temperature of 163"C", Ships Offshore Struct, 6(4), pp.311~322 (2011)
- Piloto, P. A., "Experimental bending tests of partially encased beams at elevated temperatures", Fire Saf. J, 92, pp.23~41 (2017)
- Rackauskaite, E., "Model parameter sensitivity and benchmarking of the explicit dynamic solver of LS-DYNA for structural analysis in case of fire", Fire Saf. J, 90, pp.123~138 (2017)
- Rackauskaite, E., "Structural response of a steel-frame building to horizontal and vertical travelling fires in multiple floors", Fire Saf. J, 91, pp.542~552 (2017)
- Seo, J. K., "A method for determining fire accidental loads and its application to thermal response analysis for optimal design of offshore thinwalled structures", Fire Saf. J, 92, pp.107~121 (2017)
- Sohn, J. M., "Nonlinear structural behaviour of membrane-type LNG carrier cargo containment systems under impact pressure loads at 163"C", Ships Offshore Struct, 12(5), pp.722~733 (2017)
- Tiso, M., "Evaluation of zero-strength layer depths for timber members of floor assemblies with heat resistant cavity insulations", Fire Saf. J, 107, pp.137~148 (2019)
- Wiesner, F., "The structural capacity of laminated timber compression elements in fire : a meta-analysis", Fire Saf. J, 107, pp.114~125 (2019)