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Buildings
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Base Isolation for Earthquake-Resistant Design
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Base Isolation for Earthquake-Resistant Design

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Structures".

Deadline for manuscript submissions: closed (20 May 2023) | Viewed by 9825

Special Issue Editor

Prof. Dr. Vasant Matsagar

E-Mail Website
Guest Editor
Department of Civil Engineering, Indian Institute of Technology (IIT) Delhi, New Delhi, India
Interests: multi-hazard; protective structures; earthquake-resistant design of structures; seismic base isolation

Special Issue Information

Dear Colleagues,

The base isolation of structures is a well-established and mature technology for earthquake-resistant design. Contemporary research works on seismic base isolation are aptly furthering the efforts towards improving the performance of structures, as well as contents therein. Moreover, the structural performance of the base-isolated buildings and structures is also under investigation with regards to other natural or accidental hazards, such as those from wind- and blast-induced ground motions. For this Special Issue in Buildings, articles reporting some original research contributions on the base isolation for earthquake-resistant design are solicited. Reports on innovative base isolators and new base isolation systems are being developed, and rigorous testing will be published in this edition. The practical implementation of base isolation technology in new and existing structures through in-depth case studies are also to be included. Floor isolation, the performance of secondary structures, and non-structural components in base-isolated structures are also topics of consideration. Apart from passively used base isolation systems, adaptive, semi-active, active, and hybrid control of structures with base isolation shall also find place in this Special Issue. Smart base isolation systems, wherein new control algorithms are used, e.g., those based on artificial intelligence (AI) and machine learning (ML), are welcome for consideration too.

Prof. Dr. Vasant Matsagar
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Buildings is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • AI/ML
  • active
  • base isolation
  • buildings
  • dynamics
  • earthquake
  • passive control
  • seismic
  • smart structures
  • vibration isolator

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Published Papers (3 papers)

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Research

23 pages, 6023 KiB  
Article
Hybrid Vibration Control of Hospital Buildings against Earthquake Excitations Using Unbonded Fiber-Reinforced Elastomeric Isolator and Tuned Mass Damper
by Sarranya Banerjee and Vasant Matsagar
Buildings 2023, 13(7), 1724; https://doi.org/10.3390/buildings13071724 - 6 Jul 2023
Cited by 11 | Viewed by 3817
Abstract
Lifeline structures such as hospital buildings need to be specifically designed such that they experience reduced vibrations when subjected to earthquake excitations because it will be difficult to vacate hospital buildings under the event of any earthquake. Therefore, to ensure operational condition under [...] Read more.
Lifeline structures such as hospital buildings need to be specifically designed such that they experience reduced vibrations when subjected to earthquake excitations because it will be difficult to vacate hospital buildings under the event of any earthquake. Therefore, to ensure operational condition under earthquake excitations in an existing hospital building, the present study utilizes flexible unbonded fiber-reinforced elastomeric isolators (UFREIs) for its seismic isolation. The UFREI-based isolation system is designed to restrict the structural acceleration within the tolerable limits for the building inhabitants even during earthquake hazards. However, the use of such flexible isolators results in excessively large bearing displacements, which either may not be practical and/or pose several serviceability issues. Therefore, tuned mass damper (TMD) is attached to the base floor of the UFREI-isolated hospital building to reduce the large isolator displacements. Properties of the hybrid vibration control system are designed according to the site-specific scenario in New Delhi, India. Further, nonlinear time-history analyses of the UFREI-isolated hospital building with the TMD are carried out, and responses are compared with its uncontrolled response. Results show that the peak bearing displacement response of the UFREI-isolated hospital building is reduced by 9% to 27%, due to the addition of the TMD. Importantly, the required design displacement of the UFREI-based isolation system is decreased by 27%, without compromising the effectiveness of base isolation. In fact, the performance of the hybrid vibration control system is superior to the base isolation system alone. Full article
(This article belongs to the Special Issue Base Isolation for Earthquake-Resistant Design)
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32 pages, 9322 KiB  
Article
Probabilistic Incremental Dynamic Analysis for Seismic Isolation Systems through Integration with the NHERI-SimCenter Performance-Based Engineering Application
by Mohammad AlHamaydeh, Ahmed Maky and Mohamed ElKafrawy
Buildings 2023, 13(6), 1413; https://doi.org/10.3390/buildings13061413 - 30 May 2023
Cited by 2 | Viewed by 2709
Abstract
In the wake of the 1994 Northridge and 1995 Kobe earthquakes, structural designers adopted performance-based engineering concepts instead of traditional deterministic design approaches. The primary change was to evaluate the design according to stakeholders’ interests instead of the engineering parameters. This evaluation process [...] Read more.
In the wake of the 1994 Northridge and 1995 Kobe earthquakes, structural designers adopted performance-based engineering concepts instead of traditional deterministic design approaches. The primary change was to evaluate the design according to stakeholders’ interests instead of the engineering parameters. This evaluation process required a probabilistic estimation for the included variables at all design stages. The NHERI-SimCenter application framework provides generic solutions implemented in different hazard simulation problems. Seismic isolation is an efficient, proven technique for improving seismic performance by limiting drift ratios and reducing damage. During the design stage, seismic isolation-system parameters must be carefully calibrated to control different aspects of the response, and it is necessary to run multiple simulations and count for parameter uncertainties. This research introduced components for seismic isolation and incremental dynamic analysis procedures integrated with framework modules, such as uncertainty quantifications and damage and loss estimation. Furthermore, an illustrative case study was included to reflect the impacts of this development. Full article
(This article belongs to the Special Issue Base Isolation for Earthquake-Resistant Design)
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Graphical abstract

23 pages, 8162 KiB  
Article
Experimental Investigation of Pounding Responses in Base-Isolated Frame Structures at Expansion Gap
by Siddalingappa S. Hubballi and R. S. Jangid
Buildings 2023, 13(2), 445; https://doi.org/10.3390/buildings13020445 - 6 Feb 2023
Cited by 7 | Viewed by 1835
Abstract
Experimental simulation and parametric studies have been conducted to investigate the effect of pounding in base-isolated (BI) frame structures with expansion gaps. Earthquakes often result in extensive damage at expansion joints, which encouraged this experimental evaluation of pounding between BI frames. In the [...] Read more.
Experimental simulation and parametric studies have been conducted to investigate the effect of pounding in base-isolated (BI) frame structures with expansion gaps. Earthquakes often result in extensive damage at expansion joints, which encouraged this experimental evaluation of pounding between BI frames. In the present research, the pounding effect in a series of combinations, such as adjacent flexible and stiffer BI frames of similar frequency and different frequency to adjacent frames, were experimentally analysed to find better combinations of adjacent structures with an expansion gap. In the experiments, the surfaces at the isolation and frame slab levels were free to impact in order to investigate direct pounding (DP) and mitigated pounding (MP) by inserting a neoprene rubber pad into the gap. The investigation was conducted by comparing BI structures with and without pounding responses as a result of the El Centro earthquake excitation. To demonstrate the extent of the pounding effect in adjacent structures, the horizontal and pounding force variations in each combination during DP and MP were evaluated. The experimental responses analysis results help in justifying a better variety of adjacent BI structures with an expansion gap. This experimental study shows that mitigating material in the gap is more efficient for nearer frequency combinations than for different frequency frame combinations. Full article
(This article belongs to the Special Issue Base Isolation for Earthquake-Resistant Design)
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