A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion

We revisit a unique building system including a base-isolation, building-connection hybrid control system. The base-isolation system withstands pulse-type earthquake ground motions effectively and the building-connection system resists long-duration earthquake ground motions efficiently. A simple sm...

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Autores principales:	Tomoya Nakamura, Kohei Fujita, Izuru Takewaki
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	base-isolation building-connection hybrid control passive control near-fault ground motion double impulse Engineering (General). Civil engineering (General) TA1-2040 City planning HT165.5-169.9
Acceso en línea:	https://doaj.org/article/5f056545369e4e7b9d94ee1adf6a0d95
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spelling	oai:doaj.org-article:5f056545369e4e7b9d94ee1adf6a0d952021-11-12T07:26:43ZA Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion2297-336210.3389/fbuil.2021.790584https://doaj.org/article/5f056545369e4e7b9d94ee1adf6a0d952021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fbuil.2021.790584/fullhttps://doaj.org/toc/2297-3362We revisit a unique building system including a base-isolation, building-connection hybrid control system. The base-isolation system withstands pulse-type earthquake ground motions effectively and the building-connection system resists long-duration earthquake ground motions efficiently. A simple smart critical response evaluation method without nonlinear time-history response analysis is proposed for this hybrid building system under near-fault ground motions. An analytical expression of the maximum elastic-plastic deformation of a damped bilinear hysteretic single-degree-of-freedom (SDOF) model under critical double impulse as a representative of pulse-type ground motions derived in our previous paper plays an important role in the development of the simple critical response evaluation method. A two-step transformation procedure into an SDOF model is proposed. The first step is the transformation of the main base-isolated building into an SDOF system and the second step is the reduction of the connecting dampers supported on a sub building to a damper with a sophisticated compensation factor on an assumed rigid wall. The evaluation of damping coefficients with the consideration of yielding of the base-isolation story is a key step in this paper. Different from the previous work, the equivalent damping coefficient is derived depending on the response range before and after yielding of the base-isolation story. This treatment enhances the accuracy of the proposed method. The accuracy and reliability of the proposed response evaluation method is demonstrated by the time-history response analysis of the multi-degree-of-freedom (MDOF) model.Tomoya NakamuraKohei FujitaIzuru TakewakiFrontiers Media S.A.articlebase-isolationbuilding-connectionhybrid controlpassive controlnear-fault ground motiondouble impulseEngineering (General). Civil engineering (General)TA1-2040City planningHT165.5-169.9ENFrontiers in Built Environment, Vol 7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	base-isolation building-connection hybrid control passive control near-fault ground motion double impulse Engineering (General). Civil engineering (General) TA1-2040 City planning HT165.5-169.9
spellingShingle	base-isolation building-connection hybrid control passive control near-fault ground motion double impulse Engineering (General). Civil engineering (General) TA1-2040 City planning HT165.5-169.9 Tomoya Nakamura Kohei Fujita Izuru Takewaki A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion
description	We revisit a unique building system including a base-isolation, building-connection hybrid control system. The base-isolation system withstands pulse-type earthquake ground motions effectively and the building-connection system resists long-duration earthquake ground motions efficiently. A simple smart critical response evaluation method without nonlinear time-history response analysis is proposed for this hybrid building system under near-fault ground motions. An analytical expression of the maximum elastic-plastic deformation of a damped bilinear hysteretic single-degree-of-freedom (SDOF) model under critical double impulse as a representative of pulse-type ground motions derived in our previous paper plays an important role in the development of the simple critical response evaluation method. A two-step transformation procedure into an SDOF model is proposed. The first step is the transformation of the main base-isolated building into an SDOF system and the second step is the reduction of the connecting dampers supported on a sub building to a damper with a sophisticated compensation factor on an assumed rigid wall. The evaluation of damping coefficients with the consideration of yielding of the base-isolation story is a key step in this paper. Different from the previous work, the equivalent damping coefficient is derived depending on the response range before and after yielding of the base-isolation story. This treatment enhances the accuracy of the proposed method. The accuracy and reliability of the proposed response evaluation method is demonstrated by the time-history response analysis of the multi-degree-of-freedom (MDOF) model.
format	article
author	Tomoya Nakamura Kohei Fujita Izuru Takewaki
author_facet	Tomoya Nakamura Kohei Fujita Izuru Takewaki
author_sort	Tomoya Nakamura
title	A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion
title_short	A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion
title_full	A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion
title_fullStr	A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion
title_full_unstemmed	A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion
title_sort	simple critical response evaluation method for base-isolation building-connection hybrid system under double impulse as representative of near-fault ground motion
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/5f056545369e4e7b9d94ee1adf6a0d95
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A Simple Critical Response Evaluation Method for Base-Isolation Building-Connection Hybrid System Under Double Impulse as Representative of Near-Fault Ground Motion

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