Sequential time-history analysis of building structures under earthquake and tsunami loads

N. Takahashi, Y. Hachiro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To develop the sophisticated evaluation method of tsunami-resistant performance for building structures, sequential non-linear time-history response analysis under earthquake and following tsunami loads was performed and the fundamental behavior of building structures was discussed. Then a time-history model for vertical profile of tsunami wave was developed based on the results of fluid analysis using smoothed-particle hydro-dynamics (SPH) method. Applying the proposed time-history model for vertical profile of tsunami wave as the input load after an earthquake load in the sequential non-linear time-history response analysis, the following results were revealed. (1) Froude number affects the vertical distribution of the maximum tsunami pressure to building structure. And Froude number affects also the vertical distribution of inter-story drift ratio of building structure. The proposed time-history model for vertical profile of tsunami wave shows the results of an approximate vertical distribution of inter-story drift ratio of building structure obtained from the results of SPH fluid analysis. (2) According to the sequential non-linear time-history response analysis under earthquake load and following tsunami load with the proposed time-history model for vertical profile of tsunami pressure, it is revealed that structural damage by earthquake affects the maximum displacement of building structure by tsunami. It is important to detect the deterioration of fundamental period caused by the seismic damage for detailed tsunami-resistant performance evaluation.

Original languageEnglish
Title of host publication11th National Conference on Earthquake Engineering 2018, NCEE 2018
Subtitle of host publicationIntegrating Science, Engineering, and Policy
PublisherEarthquake Engineering Research Institute
Pages5943-5953
Number of pages11
ISBN (Electronic)9781510873254
Publication statusPublished - 2018 Jan 1
Event11th National Conference on Earthquake Engineering 2018: Integrating Science, Engineering, and Policy, NCEE 2018 - Los Angeles, United States
Duration: 2018 Jun 252018 Jun 29

Publication series

Name11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy
Volume10

Conference

Conference11th National Conference on Earthquake Engineering 2018: Integrating Science, Engineering, and Policy, NCEE 2018
CountryUnited States
CityLos Angeles
Period18/6/2518/6/29

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Takahashi, N., & Hachiro, Y. (2018). Sequential time-history analysis of building structures under earthquake and tsunami loads. In 11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy (pp. 5943-5953). (11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy; Vol. 10). Earthquake Engineering Research Institute.