Seismic fragility and behavior of spherical pressure vessels

Sezer Oztürk, Kayahan Akgül, Ali Sari

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

Pressurized tanks are vessels that show high impermeability and strength against large internal pressures. These tanks can be used for liquid or gas storage. The internal pressures of the vessels used in gas storage can be at very high levels. These tanks are used in many different areas in the industry. Therefore, human health and life safety is an important parameter. Thus, the design of the tanks to be produced must be suitable for the purpose, as well as the correct analysis and safe usage conditions. Excessive pressure and the temperature difference can lead to explosions that will cause dangerous and many fatal accidents. As a result, domino effects can occur in industrial facilities. For this reason, the risk analysis and seismic behavior of these vessels should be carefully examined. When the performances of past earthquakes are examined, it has been revealed that especially spherical vessels show seismic fragility. Therefore, evaluating the seismic fragility of these vessels is an important issue in regions with high seismic risk. Fragility curves are important tools to evaluate the vulnerability of structures to earthquakes. Within the scope of this study, fragility curves have been created by considering nonlinear time history analyzes and the limited database analyzed for the damage conditions of spherical pressure vessels in earthquakes that occurred in the past years. The curves obtained were interpreted in relation to the ground motion intensity parameter (PGA). In addition, nonlinear time history analyzes of tank models using the Finite Element Method (FEM) have been performed to evaluate the seismic performance of the vessels. Also, the damage data of horizontal tanks were collected and interpreted.

Original languageEnglish
Title of host publicationOperations, Applications, and Components; Seismic Engineering; Non-Destructive Examination
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791885352
DOIs
Publication statusPublished - 2021
EventASME 2021 Pressure Vessels and Piping Conference, PVP 2021 - Virtual, Online
Duration: 13 Jul 202115 Jul 2021

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume5
ISSN (Print)0277-027X

Conference

ConferenceASME 2021 Pressure Vessels and Piping Conference, PVP 2021
CityVirtual, Online
Period13/07/2115/07/21

Bibliographical note

Publisher Copyright:
Copyright © 2021 by ASME.

Keywords

  • Finite element analysis
  • Pressure vessels
  • Seismic behavior
  • Seismic fragility
  • Spherical and horizontal tank

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