Seismic performance characterization of fire sprinkler piping systems through shake table testing

Muhammad Rashid, R. Dhakal, T. Sullivan, T. Yeow
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引用次数: 2

Abstract

Fire sprinkler systems damaged during earthquakes can compromise building functionality either by loss of fire protection and/or flooding damage. To characterize the seismic behavior of fire sprinkler piping systems, shake table tests were conducted on a piping specimen with features representative of actual practices in New Zealand. The specimen was subjected to a set of motions including recorded floor acceleration response histories of an instrumented building in New Zealand. This paper describes the test setup and the piping specimen, and discusses the seismic response of the specimen to multiple floor motions for different bracing variations. Based on the test results reported in this paper, it can be concluded that bracing segments of piping other than the distribution pipe, such as the branch and arm-over pipes, can considerably affect the seismic demand on the system. Further, the test results confirm that the seismic demands on pipes can be considerably greater if the piping system is in resonance with the input excitation motion.
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通过振动台试验表征消防喷淋系统的抗震性能
消防喷淋系统在地震期间损坏,可能会因失去防火保护和/或洪水破坏而损害建筑物的功能。为了表征消防喷淋系统的抗震性能,在新西兰对具有代表性的管道试件进行了振动台试验。该试样受到一系列运动的影响,包括新西兰一座仪器化建筑的地板加速度响应历史记录。本文介绍了试验装置和管道试件,并讨论了不同支撑变化下管道试件在多次楼板运动下的地震反应。根据本文所报道的试验结果,可以得出结论,除配水管外,支管和移交管等管道的支撑段对系统的抗震需求有很大影响。此外,试验结果证实,当管道系统与输入激励运动发生共振时,对管道的抗震要求会大大提高。
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来源期刊
CiteScore
2.50
自引率
17.60%
发文量
14
期刊最新文献
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