Performance-based earthquake evaluation of a full-scale petrochemical piping system |
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| Institution: | 1. Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, 38123, Trento, Italy;2. University of Roma Tre, Department of Engineering, Via Vito Volterra 62, 00146, Rome, Italy;1. Department of Engineering, Roma Tre University, Via Vito Volterra 62, 00146 Rome, Italy;2. Department of Architecture, Roma Tre University, Via Aldo Manuzio 68L, 00153 Rome, Italy;1. Department of Structural Engineering, Tongji University, Shanghai 200092, China;2. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;1. Research Professor Seismic Research and Test Center, Pusan National University 49 Busandaehak-ro, Yangsan, Gyeongnam 50612, Republic of Korea;2. Research Professor Seismic Research and Test Center, Pusan National University 49 Busandaehak-ro, Yangsan, Gyeongnam 50612, Republic of Korea;3. Principal Researcher Structural Safety & Prognosis Division, Korea Atomic Energy Research Institute, 111 Daedeok-daero 989 beon-gil, Yusung-gu, Daejon 34057, Republic of Korea;4. Principal Researcher Structural Safety & Prognosis Division, Korea Atomic Energy Research Institute, 111 Daedeok-daero 989 beon-gil, Yusung-gu, Daejon 34057, Republic of Korea;1. KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden;2. Vattenfall AB, SE-169 92 Stockholm, Sweden |
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| Abstract: | Assessment of seismic vulnerability of industrial petrochemical and oil & gas piping systems can be performed, beyond analytical tools, through experimental testing as well. Along this line, this paper describes an experimental test campaign carried out on a full-scale piping system in order to assess its seismic behaviour. In particular, a typical industrial piping system, containing several critical components, such as elbows, a bolted flange joint and a Tee joint, was tested under different levels of realistic earthquake loading. They corresponded to serviceability and ultimate limit states for support structures as suggested by modern performance-based earthquake engineering standards. The so called hybrid simulation techniques namely, pseudo-dynamic and real time testing with dynamic substructuring, were adopted to perform seismic tests. Experimental results displayed a favourable performance of the piping system and its components; they remained below their yielding, allowable stress and allowable strain limits without any leakage even at the Near Collapse Limit State condition for the support structure. Moreover, the favourable comparison between experimental and numerical results, proved the validity of the proposed hybrid techniques alternative to shaking table tests. |
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| Keywords: | Piping systems Petrochemical piping Seismic performance Hybrid simulation Hybrid testing |
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