Shaking Table Test of Seismic Bracings in Piping Systems


Abstract eng:
The seismic damage caused by strong earthquakes worldwide has highlighted the importance of functional resilience of nonstructural components. Directing at seismic bracings used in piping systems, this paper firstly introduces the classification, construction and design steps of seismic bracings. The seismic code requirements for design method and load performance testing of seismic bracings are mentioned. Relevant seismic research of bracings is also reviewed. The shaking table test of seismic bracings in a 6-meter full-size piping system was conducted and responses of both floor and pipes were measured on the longitudinal and lateral directions under the table input levels. In addition with theoretical analysis and specification comparison, the seismic performance of bracings and the acceleration amplification coefficient of pipes are studied. The test results indicate that the seismic performance of bracings is good enough to satisfy the seismic code requirement. But the problem of bolt looseness occured in connection parts may further cause the rotation or shift of bracings under continued earthquakes or aftershocks. Based on the results, both technical improvement measures to enhance weak connections and design optimization suggestions considering cost need to be put forwarded.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.



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 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 416.:
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