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http://dx.doi.org/10.7731/KIFSE.2019.33.5.149

Seismic Analysis of Firefighting Pipe Networks  

Choi, Ho-Sung (Department of Fire and Disaster Prevention, Daejeon Univ.)
Lee, Jae-Ou (Department of Fire and Disaster Prevention, Daejeon Univ.)
Publication Information
Fire Science and Engineering / v.33, no.5, 2019 , pp. 149-154 More about this Journal
Abstract
The stability of firefighting pipes is crucial in the event of an earthquake. In Korea, specification-based designs are used in accordance with NFSC. However, engineering performance-based designs are used for buildings that have special requirements. For firefighting pipes, tree type pipe networks are usually utilized in buildings; however, they are characterized by several limitations. Hence, grid type and loop type networks are being utilized lately. Earthquake-resistant designs for firefighting pipes in Korea utilize NFPA 13 as the cookbook. Nevertheless, an engineering analysis is required to verify its reliability. The NFPA 13 standard used in Korea is a design method for engineers who lack earthquake engineering analysis knowledge of pipes and adapt ASCE and ASME guidelines. Earthquake resistant designs in Korea review braces only. Hence, various analyses under load conditions, such as the internal pressure of a pipe, force exerted by a continuous load, and an earthquake, are required to ensure reliability. An engineering earthquake-resistance analysis showed that tree type pipe networks are less stable than grid and loop type pipe networks. A comparison of earthquake-resistance analysis based on stress and strain revealed that strain analysis exhibited a conservative result value in the range of over-stress. Therefore, for the earthquake-resistance analysis of pipes, it is rational that engineers perform analysis to achieve the required standards through engineering analysis rather than uniform calculations, which should also be analyzed considering various analysis conditions.
Keywords
Seismic; Fire fighting pipe; Stress base design; Strain base design; Displacement;
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  • Reference
1 Korea Meteorological Administration, http://www.kma.go.kr/(2017).
2 NEMA, "Seismic Design Criteria of Fire-fighting Facilities" (2016).
3 MOLIT, "Construction Equipment Design Criteria" (2016).
4 Ministry of Trade and Industry a Law Examination, "Heating Facility standard of District Heating System" (2018).
5 J. O. Lee, H. K. Kim and S. B. Cho, "A Study on Performance-based Seismic Design Method of Fire Extinguishing Pipe System", Fire Science & Engineering, Vol. 31, No. 4, pp. 86-94 (2017).   DOI
6 J. O. Lee, K. Y. Oh and D. S. Bang, "Comparison of Methods to Improve Seismic Performance Depending on the Use of Expansion Joint", International Journal of Innovative Technology and Exploring Engineering, Vol. 8, Issue. 8S2, pp. 670-674 (2019).
7 NFPA 13, "Standard for the Installation of Sprinkler Systems, Ch.9" (2016).
8 American Lifelines Alliance, "Seismic Design and Retrofit of Piping Systems" (2002).
9 ASME B31.1, "Power Piping" (2012).
10 Bentley, "Autopipe Advanced" (2019).
11 Piping Team, "Stress Manual" Hyundai Engineering (2004).
12 B. Liu, X. J. Liu and H. Zhang, "Strain-based Design Criteria of Pipelines", Journal of Loss Prevention in the Process Industries, Vol. 22, No. 6, pp. 884-888 (2009).   DOI
13 F. P. Beer, E. R. Johnston and D. F. Mazurek, "Mechanics of Materials" McGraw-Hill, US (2015).
14 F. P. Beer, E. R. Johnston and D. F. Mazurek, "Vector Mechanics for Engineers (Statics)" McGraw-Hill, US (2007).