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Journal articles on the topic 'Base isolator'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Nanda, Radhikesh Prasad, and Subhrasmita Majumder. "Pushover Analysis of Base Isolated RC Frame Buildings With Masonry Infills." International Journal of Geotechnical Earthquake Engineering 10, no. 2 (2019): 18–31. http://dx.doi.org/10.4018/ijgee.2019070102.

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In the present article, the performance of base-isolated infilled frames is studied analytically. The seismic performances of four RC buildings, namely RC bare frame without isolator, RC bare frame with isolator, RC infilled frame without isolator, and RC infilled frame with isolator are analysed. The results show a decrease in base shear value and increase in time period due to base isolated buildings, while these parameters are reversely affected due to infills. The decrease in story drift for the base isolated buildings is in phase while considering infill. Also, it can be inferred that pla

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2

Jangid, R. S., and T. K. Datta. "Dissipation of Hysteretic Energy in Base Isolated Structure." Shock and Vibration 3, no. 5 (1996): 353–59. http://dx.doi.org/10.1155/1996/215819.

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Dissipation of hysteretic energy in the isolator of the base isolated structure under seismic excitation is investigated. The hysteretic force-deformation characteristics of the base isolator is specified by a nonlinear differential equation. The parameters of the equation can be adjusted to obtain various types of hysteretic models of the isolator including the elastoplastic type. The variation of hysteretic energy dissipated in the isolators is obtained for both harmonic and El-Centro 1940 earthquake ground motion for a set of important parameters. They include time period of superstructure,

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3

Ngo, Van-Thuyet. "Seismic performance comparison of a base-isolated building supported on bonded and unbonded fiber-reinforced elastomeric isolators." Structural Integrity and Life 25, no. 1 (2025): 27–35. https://doi.org/10.69644/ivk-2025-01-0027.

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Fiber reinforced elastomeric isolator (FREI) is a new seismic isolator which has been studied in the world and is expected to be utilised in medium and low-rise buildings. It consists of alternating layers of rubber bonded to fiber layers as reinforcement sheets. FREIs are primarily categorised into two types: bonded fiber reinforced elastomeric isolator (B-FREI) and unbonded fiber reinforced elastomeric isolator (U-FREI). In this study, a base-isolated 5-storey reinforced concrete building supported on FREIs in two cases: using B-FREIs and using U-FREIs under the action of various recorded re

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Balandin, D. V., N. N. Bolotnik, and W. D. Pilkey. "Pre-Acting Control for Shock and Impact Isolation Systems." Shock and Vibration 12, no. 1 (2005): 49–65. http://dx.doi.org/10.1155/2005/578381.

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Pre-acting control in shock/impact isolation systems is studied. With pre-acting control, the isolation system begins to respond to an impact before this impact has been applied to the base. The limiting performance of the isolator with pre-acting control is investigated for a single-degree-of-freedom system subject to an instantaneous impact. The isolation performance index is defined as the maximum of the absolute value of the displacement of the object to be isolated relative to the base, provided that the magnitude of the control force transmitted to the object does not exceed a prescribed

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5

SHARMA, AJAY, and R. S. JANGID. "INFLUENCE OF HIGH INITIAL ISOLATOR STIFFNESS ON THE SEISMIC RESPONSE OF A BASE-ISOLATED BENCHMARK BUILDING." International Journal of Structural Stability and Dynamics 11, no. 06 (2011): 1201–28. http://dx.doi.org/10.1142/s0219455411004543.

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The influence of high initial isolator stiffness on the response of a base-isolated benchmark building is investigated. The base-isolated building is modeled as a three-dimensional linear-elastic structure having three degrees-of-freedom at each floor level. The time-history analysis of this building is carried out by solving the governing equations of motion using Newmark-beta method along with an iterative predictor–corrector approach. The force–deformation behavior of the isolation system is modeled by a bilinear law, which can be effectively used to model all isolation systems in practice.

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6

Saha, Sandip Kumar, Vasant A. Matsagar, and Arvind K. Jain. "Earthquake Response of Base-Isolated Liquid Storage Tanks for Different Isolator Models." Journal of Earthquake and Tsunami 08, no. 05 (2014): 1450013. http://dx.doi.org/10.1142/s1793431114500134.

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The effect of different isolator parameters on earthquake response of base-isolated liquid storage tanks is investigated herein. Mechanical analog, with three lumped masses, is used to model ground supported base-isolated liquid storage tank, and analyzed for recorded earthquake ground accelerations. The nonlinear force–deformation behavior of the isolator is mathematically modeled in two different ways, represented by (a) equivalent linear elastic-viscous and (b) bi-linear hysteretic behaviors. The equations of motion for the base-isolated tank are derived and solved in the incremental form u

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7

Ocak, Ayla, Sinan Melih Nigdeli, Gebrail Bekdaş, Sanghun Kim, and Zong Woo Geem. "Optimization of Seismic Base Isolation System Using Adaptive Harmony Search Algorithm." Sustainability 14, no. 12 (2022): 7456. http://dx.doi.org/10.3390/su14127456.

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In this study, a seismic isolator placed on the base of a structure was optimized under various earthquake records using an adaptive harmony search algorithm (AHS). As known, the base-isolation systems with very low stiffness provide a rigid response of superstructure, so it was assumed that the structure is rigid and the base-isolated structure can be considered as a single-degree of freedom structure. By using this assumption, an optimization method that is independent of structural properties but specific to the chosen earthquake excitation set is proposed. By taking three different damping

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8

Kumar, Sooraj. "Seismic Impact of LRB-based Base Isolation on Stepped Buildings." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (2022): 715–21. http://dx.doi.org/10.22214/ijraset.2022.45336.

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Abstract: The base isolation design strategy uncouples the superstructure from the foundation, reducing the effects of earthquake ground motion. The structure is isolated from the ground motion by a flexible base. Installing base isolators in columns, the base shear values. The structural response accelerations are usually less than the ground motion acceleration. In general, base isolation reduces storey shear and acceleration while simultaneously increasing time period, storey displacement, and storey drift, allowing rigid buildings to be more flexible by dispersing energy to the foundation.

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9

Kumar, Sooraj, and Ganesh Jaiswal. "Effect of Base Isolation using LRB on Stepped Building." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (2022): 4324–30. http://dx.doi.org/10.22214/ijraset.2022.45990.

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Abstract: The base isolation design strategy uncouples the superstructure from the foundation, reducing the effects of earthquake ground motion. The structure is isolated from the ground motion by a flexible base. Installing base isolators in columns. The structural response accelerations are usually less than the ground motion acceleration. In general, base isolation reduces storey shear and acceleration while simultaneously increasing time period, and storey drift, allowing rigid buildings to be more flexible by dispersing energy to the foundation. The basic seismic isolation design provides

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10

Zelleke, Daniel H., Said Elias, Vasant A. Matsagar, and Arvind K. Jain. "Supplemental dampers in base-isolated buildings to mitigate large isolator displacement under earthquake excitations." Bulletin of the New Zealand Society for Earthquake Engineering 48, no. 2 (2015): 100–117. http://dx.doi.org/10.5459/bnzsee.48.2.100-117.

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The effect of viscous, viscoelastic, and friction supplemental dampers on the seismic response of base-isolated building supported by various isolation systems is investigated. Although base-isolated buildings have an advantage in reducing damage to the superstructure, the displacement at the isolation level is large, especially under near-fault ground motions. The influence of supplemental dampers in controlling the isolator displacement and other responses of base-isolated building is investigated using a multi-storey building frame. The coupled equations of motion are derived, solved and ti

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11

P V, Shadiya, and Priyanka Dilip P. "Seismic Analysis of Irregular Buildings With And Without Lead Plug Rubber Bearings (LPRB)." Journal of Recent Activities in Infrastructure Science 8, no. 2 (2023): 1–11. http://dx.doi.org/10.46610/jorais.2023.v08i02.001.

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Base isolation has become an effective technique that aids in earthquake hazard mitigation and has been in use for the past decade. By properly separating the structure from the horizontal ground motion components, the base isolation system lowers the likelihood of resonance. Isolators are provided at the base of the structures, and decoupling is accomplished by modifying the system's flexibility and adding adequate damping. Structures with irregular plans are gaining popularity owing to their aesthetic appearance as well as architectural designs. The response of such structures to seismic act

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12

Mondal, Papiya D., Aparna D. Ghosh, and Subrata Chakraborty. "Performances of Various Base Isolation Systems in Mitigation of Structural Vibration Due to Underground Blast Induced Ground Motion." International Journal of Structural Stability and Dynamics 17, no. 04 (2017): 1750043. http://dx.doi.org/10.1142/s0219455417500432.

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A comparative study is carried out on the performance of various elastomeric and frictional base isolation (BI) systems in the vibration mitigation of structures subjected to underground blast induced ground motion (BIGM). The parametric sensitivities of the base isolated structures to variations in the design parameters of the isolators are examined for different intensities of blast input. Results indicate that substantial reductions in both the acceleration and displacement responses of the structure can be achieved by the different base isolators. Generally, the Electricite de France (EDF)

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Matsagar, Vasant A., and R. S. Jangid. "Base-Isolated Building with Asymmetries Due to the Isolator Parameters." Advances in Structural Engineering 8, no. 6 (2005): 603–21. http://dx.doi.org/10.1260/136943305776318365.

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The effects of torsional coupling, due to isolator parameters, on the seismic response of base-isolated buildings are presented. The isolated building is modelled as a single-storey structure mounted on different isolation devices such as elastomeric and sliding systems involving non-linear restoring forces. The governing equations of motion for the uncoupled and torsionally coupled system are derived and solved in time domain by Newmark's method of integration to obtain lateral-torsional displacement response. The displacement response of the isolated system with different combinations of str

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14

Ngô, Văn Thuyết. "Ảnh hưởng của đường quan hệ lực cắt - chuyển vị ngang của gối cách chấn đa lớp đến hiệu quả giảm chấn của nhà cách chấn đáy có kết cấu tường gạch". Vietnam Institute for Building Science and Technology 2024, vi.vol4 (2024): 7–16. https://doi.org/10.59382/j-ibst.2024.vi.vol4-2.

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Multilayer elastomeric isolator is a device of passive control system that is commonly used for earthquake-resistant structures. Effective horizontal stiffness and equivalent viscous damping are two important parameters of characteristic properties of the isolator, while the effective horizontal stiffness is directly determined from shear force – horizontal displacement curve of the isolator. Seismic performance of a base-isolated building under earthquake is affect by the effective horizontal stiffness parameter of the isolator. However, there are very few studies examining this influence. Th

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Kumar, Sooraj, and Ganesh Jaiswal. "Effectiveness of Different Base Isolation on Stepped Buildings." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (2022): 4345–53. http://dx.doi.org/10.22214/ijraset.2022.45997.

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Abstract: Seismic isolation devices are commonly employed to protect structures from the impacts of severe ground motions. ETABS2016, a modelling and analysis programme, was used in this work to model and analyse the isolated stepped building. Rubber isolator link components were used as a single joint element to represent the rubber isolators between the ground and the superstructure. El-Centro seismic records were used to analyse the isolated building. The lateral inter-storey drifts, story displacement and peak absolute floor accelerations, of the isolated building were compared to those of

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16

Vibhute, A. S., S. D. Bharti, M. K. Shrimali, and S. Vern. "Seismic Performance of Elastomeric and Sliding Friction Isolation System." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 815–19. http://dx.doi.org/10.38208/acp.v1.588.

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The base isolation technique is widely used in the isolation of structures for providing efficient protection to structures concerning different loadings. This study aims to evaluate comparative performance and inelastic responses of the base-isolated structure for two types of isolation systems under the Far-field and Near-field earthquake. For this purpose, seismic response quantities like base shear, peak ?oor displacement, absolute acceleration, and isolator displacement for ten-story reinforced concrete building frame base isolated by lead rubber bearings (LRBs) are evaluated and compared

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17

Sabiha, Hamouche, Bennacer Lyacine, and Nassim Kernou. "Comparative Study of the Non-Linear Dynamic Behaviour of Different Seismic Isolation Systems." Advanced Engineering Forum 48 (January 10, 2023): 17–29. http://dx.doi.org/10.4028/p-97i58z.

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To mitigate the effect of earthquake on the structure, the base isolation technique is the best alternative as a seismic protection system. In this research, a two-degree-of-freedom (2DOF) equivalent model is modelled based on a real eight-level reinforced concrete structure damaged by the Boumerdes earthquake in 2003 is presented. The basic isolation systems considered are four models namely: the first system is a high damping isolator (HDBR), the second system is the friction pendulum isolator (FPS). The third model of the base isolation system is a non-linear model with two horizontal and r

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Rajput, Gautam, and Vinayak Mishra. "Performance of RC Building with Different base Isolators." International Journal for Research in Applied Science and Engineering Technology 10, no. 8 (2022): 1265–69. http://dx.doi.org/10.22214/ijraset.2022.46404.

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Abstract: The paper evaluates the application of base isolation methods based on the location of site. Building various sorts of structures while assuring their safety, serviceability, and durability is the focus of civil engineering. Seismic activity has severe impact on the structures' serviceability and safety. The type of building, the type of soil, the technology utilized for seismic resistant, and the location of the building, all the effects how much damage an earthquake may cause to structures. Because an earthquake alters the motion of the ground, which causes foundation failure, the

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Sharma, Ajay, and SudhirKumar Soni. "Application of MR damper in Base-isolated Irregular Building with different variable sliding Isolators." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 673–85. http://dx.doi.org/10.38208/acp.v1.568.

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Application of Electromagnetic induction (EMI) based passively controlled and some local response governed MR dampers in controlling the isolator displacement in base-isolated Irregular building have been studied and compared with the Lyapunov controller. The Irregular building is hybrid isolated with elastomeric rubber bearings and a variety of sliding isolators subjected to strong near field earthquakes acting bi-directionally in horizontal plane. The shear type base-isolated Irregular building is modelled as three-dimensional linear elastic structure having three degrees-of-freedom at each

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Sui, Jie Ying, Weng Feng Liu, and Yang Yang Zhang. "Study on Disk Spring Two-Storey Rolling Isolator." Advanced Materials Research 163-167 (December 2010): 3987–91. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.3987.

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In this paper, a new type of disk spring two-storey rolling seismic isolator was developed. The two-storey rolling isolator isolates horizontal earthquake with metallic dampers to restore to normal position, limit displacement and dissipate energy. The disk spring isolates vertical earthquake. Adopt MATLAB to build the shear model, and contrasts the earthquake response between the base-isolated structure and the unbase-isolated structure.

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El Ouardani, Adil, and Taoufik Tbatou. "Seismic Isolators Layout Optimization Using Genetic Algorithm Within the Pymoo Framework." Civil Engineering Journal 10, no. 8 (2024): 2517–35. http://dx.doi.org/10.28991/cej-2024-010-08-07.

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In most previous studies, seismic base isolation system optimization has mainly focused on determining isolation layer parameters. However, the subsequent steps of isolator device selection and positioning can significantly impact overall system performance. To address these shortcomings, we propose an alternative optimization approach demonstrated through two models: regular and irregular 8-storey reinforced concrete structures. This approach utilizes the Pymoo framework and commercially available isolators to find optimal isolator layout configurations in two steps. First, using the equivale

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Balaraju, Boda, and Atulkumar Manchalwar. "Performance of elevated water tank staging with base isolation under blast loading." E3S Web of Conferences 309 (2021): 01134. http://dx.doi.org/10.1051/e3sconf/202130901134.

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In this present study aims to evaluate the performance of base isolation device under different intensity blast induced ground excitations for an elevated water tank staging. In this study mainly focused to improve the performance of the base isolator and minimize the damage of the structure. To know the performance of base isolator two models are considered one is fixed base model and another one is supported with base isolator model for both non-linear time history analysis is carried out with the help of SAP 2000 software subjected to four different underground blast intensities. From the a

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Cancellara, Donato, Fabio de Angelis, and Mario Pasquino. "A Novel Seismic Base Isolation System Consisting of a Lead Rubber Bearing in Series with a Friction Slider. Part II: Application to a Multi-Storey RC Building and Comparison with Traditional Systems." Applied Mechanics and Materials 256-259 (December 2012): 2174–84. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.2174.

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In a parallel paper a new High Damping Hybrid Seismic Isolator (HDHSI) has been proposed and obtained by the assembly in series of a Lead Rubber Bearing (LRB) and a Friction Slider (FS) characterized by a high friction coefficient. In the present paper, within the context of seismic base isolation techniques for the earthquake resistance of Reinforced Concrete (RC) buildings, a multi-storey RC building is analyzed as base isolated by the seismic isolator HDHSI (High Damping Hybrid Seismic Isolator). The seismic response of this base isolated RC building is compared with the seismic response of

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Zheng, Zhi, Xiaolan Pan, and Xu Bao. "Sequential Ground Motion Effects on the Behavior of a Base-Isolated RCC Building." Mathematical Problems in Engineering 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/3579713.

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The sequential ground motion effects on the dynamic responses of reinforced concrete containment (RCC) buildings with typical isolators are studied in this paper. Although the base isolation technique is developed to guarantee the security and integrity of RCC buildings under single earthquakes, seismic behavior of base-isolated RCC buildings under sequential ground motions is deficient. Hence, an ensemble of as-recorded sequential ground motions is employed to study the effect of including aftershocks on the seismic evaluation of base-isolated RCC buildings. The results indicate that base iso

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Ngô, Văn Thuyết. "KHẢO SÁT ĐƯỜNG QUAN HỆ LỰC CẮT - CHUYỂN VỊ NGANG CỦA GỐI CÁCH CHẤN ĐÀN HỒI CỐT SỢI TRONG CÔNG TRÌNH CÁCH CHẤN ĐÁY CHỊU ĐỘNG ĐẤT". Vietnam Institute for Building Science and Technology 2022, vi.vol4 (2022): 11–17. http://dx.doi.org/10.59382/j-ibst.2022.vi.vol4-2.

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Fiber reinforced elastomeric isolator (FREI) is a relatively new laminated elastomeric isolator and is expected to reduce the damage for mid and low-rise buildings under earthquakes. It has been studied and developed with two types: bonded fiber reinforced elastomeric isolator (B-FREI) and unbonded fiber reinforced elastomeric isolator (U-FREI). In this study, the response of a reinforced concrete frame building supported on U-FREIs under the action of various ground motions of recorded real earthquakes in the past is investigated by finite element analysis using SAP2000 software. Result is to

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Tonyalı, Zeliha, and Adnan Kıral. "Seismic performance evaluation of base-isolated buildings with variations of mass and stiffness." Journal of Innovative Engineering and Natural Science 5, no. 2 (2025): 520–33. https://doi.org/10.61112/jiens.1606136.

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Significant investigations have been undertaken regarding base-isolated structures. However, various factors, such as substantial renovations in base-isolated buildings, the installation of heavy machinery in base-isolated hospitals, or the degradation of isolator stiffness, can lead to changes in a building's mass and stiffness over time. These alterations, often overlooked in existing literature, can affect the structure's natural period, resulting in seismic accelerations and bearing displacements that may exceed anticipated limits. This issue has not been thoroughly explored in the base is

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Liu, Ying Li, Chun Miao Li, and Te Liang Yan. "Dynamic Analysis of the Base Isolator Structure." Advanced Materials Research 143-144 (October 2010): 832–36. http://dx.doi.org/10.4028/www.scientific.net/amr.143-144.832.

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Isolators are included in the new earthquake-resistant standard. This article analyses some questions on base-isolators and presents a non-linear dynamic computing-model for the time-history. A corresponding computer program is also compiled. With the program, the earthquake response of a isolated structure including the displacement, acceleration and the shear force of each floor are calculated and compared with those of the same structure without base-isolation. It has been found that base-isolation has important realistic significance in mitigating earthquake disaster effectively and has en

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Dr., Thamir Al-Azawi* Dr. AbdulMuttalib I.S. AlMusaui Dr. Salah R. Al-Zaidee. "MODELING OF BASE ISOLATOR AS STRUCTURAL ELEMENT." Global Journal of Engineering Science and Research Management 4, no. 7 (2017): 92–103. https://doi.org/10.5281/zenodo.836621.

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Two proposals for modeling of the base isolators as a structural element have been given. The first model simulates base isolator as two springs, while the second one models base isolator as a deep beam element. Comparison between the two models indicates that if the experimental data to determine the value of EI/L are available, the modeling of base isolator as a deep frame element will be more accurate than the model of two springs. In both models, the energy dissipation in the base isolators has been modeled by an equivalent viscous damping. Based on the comparison with experimental work it

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Fasikhullisan, Fasikhullisan, Antonius Antonius, and Prabowo Setiyawan. "STUDI PERBANDINGAN KINERJA GEDUNG MENGGUNAKAN BASE ISOLATOR TYPE HIGH DAMPING RUBBER BEARING (HDRB) 8 LANTAI DAN 25 LANTAI (Studi Kasus: Rumah Susun Politeknik Pekerjaan Umum)." Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil 29, no. 1 (2024): 130–38. https://doi.org/10.32497/wahanats.v29i1.5654.

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In recent years a number of areas in the country have experienced earthquakes, resulting in deaths and damage to buildings. Indonesia is located in the Pacific Volcano Rim and is a country with the most active volcanoes in the world, so earthquakes often occur. In this thesis, a comparative analysis of the use of Base Isolators in an 8-storey building and a case study of Semarang Public Works Polytechnic Flats is conducted. The analysis uses ETABS V18 Software. The Vibration Period of the 8-Storey Building without Base Isolator in the X direction is 0.597s and when added Base Isolator becomes

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Wang, Hao, Wen-Zhi Zheng, Jian Li, and Yu-Qi Gao. "Effects of temperature and lead core heating on response of seismically isolated bridges under near-fault excitations." Advances in Structural Engineering 22, no. 14 (2019): 2966–81. http://dx.doi.org/10.1177/1369433219855914.

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Seismic responses of bridges isolated by lead rubber bearings under near-fault excitations are presented in this article. A bilinear force-deformation model is employed to represent the hysteretic behaviors of lead rubber bearings. The joint effects of ambient temperature, initial displacement, and lead core heating on the responses of seismically isolated bridges are investigated. Nonlinear time history analyses are conducted with the employed hysteretic models of lead rubber bearings. Comparisons of the responses with and without the joint effects are performed, in terms of maximum isolator

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Cheng, Yongfeng, Hulun Guo, Zhubing Zhu, Xiaochao Su, and Yushu Chen. "Dynamics of a Upright Pole Coupled with Nonlinear Hysteretic Isolators under Harmonic Base Excitation." Shock and Vibration 2018 (June 13, 2018): 1–11. http://dx.doi.org/10.1155/2018/2497035.

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Leady isolator shows hysteretic nonlinearity. The isolation efficiency of leady isolator is an important problem in many engineering structures. In this paper, vibrations of a ceramic upright pole coupled with four leady isolators under harmonic base excitation are studied. A hysteretic force-deformation model of leady isolator is derived from experimental results. With this model, the vibration of the pole in rotation is studied. The frequency response is obtained analytically by employing harmonic balance method. The analytical results are agreed well with numerical results. The vibration of

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Zarkasi, Ahmad, Hariyadi Hariyadi, Nurul Hidayati, Adryan Fitrayudha, and M. Heru. "The Influence of Base Isolator on The Reinforced Concrete Structures at Sapadia Mataram Hotel Earthquake-Induced." Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia 9, no. 1 (2024): 95–108. http://dx.doi.org/10.33366/rekabuana.v9i1.5562.

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Ring of Fire and at the intersection of three tectonic plates. Efforts are needed to minimize earthquake damage, one of which is the use of a base isolator system. This study aims to determine the effect of using High Damping Rubber Bearing (HDRB) with a diameter of 800 mm on the behavior of reinforced concrete structures in tall buildings under seismic loads. The research location is the 7-story Sapadia Hotel building in the city of Mataram. The research is conducted by analyzing a 3D model of the fixed base structure and the base isolator structure using numerical analysis. The results show

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Lakusic, Stjepan. "3D nonlinear seismic analysis and design of base-isolated buildings under near field ground motions." Journal of the Croatian Association of Civil Engineers 75, no. 05 (2023): 483–93. http://dx.doi.org/10.14256/jce.3548.2022.

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The structural performance of base-isolated buildings during past earthquakes confirmed the suitability of Lead Rubber Bearing (LRB) isolators. To assess the effectiveness of such isolators, 3D base-fixed and associated base-isolated models of a multi-story building are performed for three components recorded at each of the three stations with the closest distances to the seismic fault of approximately 5.54, 11.39, and 17.82 km during the 6.7 Mw Northridge earthquake in 1994. In this study, we discuss important issues regarding the analysis and design of base-isolated buildings under near-fiel

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Suwondo, Riza, Dawson Susanto, Made Suangga, and Mohammed Sohaib Alama. "Earthquake Resilience in Low-Rise Concrete Buildings: A Study on the Effectiveness of Base Isolators." International Journal on Advanced Science, Engineering and Information Technology 15, no. 2 (2025): 633–39. https://doi.org/10.18517/ijaseit.15.2.20636.

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Earthquakes pose significant challenges worldwide, causing severe structural damage, loss of life, and socioeconomic disruptions. To mitigate seismic effects, base isolators have emerged as an effective design strategy for reducing structural damage by decoupling buildings from ground motion. This study investigates the seismic performance of a low-rise concrete building equipped with base isolators, focusing on the influence of isolator mass, stiffness, and damping ratio on key structural responses, including the base shear, natural period, and inelastic storey drift. A symmetric three-storey

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Pérez-Aracil, J., E. Pereira, Iván M. Díaz, and P. Reynolds. "Passive and active vibration isolation under isolator-structure interaction: application to vertical excitations." Meccanica 56, no. 8 (2021): 1921–35. http://dx.doi.org/10.1007/s11012-021-01342-2.

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AbstractThis work studies the influence of a vibration isolator on the response of a flexible base structure. Two strategies are compared: passive and active vibration isolation (PVI, AVI). Although the multiple advantages of AVI over PVI techniques are well known, their effect in the base structure has not to date been compared. This interaction has an important role in the performance of the general control system, especially when the vibration isolation system is not the only system on the base structure or when there are multiple isolators working simultaneously on it. In addition, the str

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Kurniawandy, Alex, Zulfikar Djauhari, Hafizd Ahmed Jamil, and Riza Aryanti. "Study of the effect of installing seismic isolators at higher elevations in moment frame structures." E3S Web of Conferences 464 (2023): 15008. http://dx.doi.org/10.1051/e3sconf/202346415008.

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A seismic isolator is a helpful technology to protect structures from seismic hazards that threaten building structures. Seismic isolators increase the structure's natural period, thereby reducing the seismic response that occurs in the structure. Seismic isolators are generally installed at the base of the structure. However, in this study, the installation will be simulated at a higher elevation. The study purpose is to investigate the effect of installation seismic isolators in different level. The case study is a ten stories structures with four models. Model 1 is fixed without a base isol

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Öztürk, Hakan, Erkan Çelebi, and Cemalettin Kaya. "Experimental Study on Seismic Performance Evaluation of a Multi-Story Steel Building Model with Rolling-Type Seismic Base Isolation." Buildings 14, no. 10 (2024): 3268. http://dx.doi.org/10.3390/buildings14103268.

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Critical structures such as hospitals, high-precision manufacturing facilities, telecommunications centers, and fire stations, especially, need to maintain their functionality even during severe earthquakes. In this sense, seismic isolation technology serves as a vital design method for preserving their functionality. Seismic isolators, also known as earthquake isolation systems, are used to reduce the effects of earthquakes on buildings by isolating them from the ground they are located on. By ensuring that less acceleration and force demand is transmitted to the superstructure, both the buil

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Siagian, Ahmad Ridho, Wesli Wesli, Yovi Chandra, and Said Jalalul Akbar. "STUDI KOMPARASI BASE SHEAR PADA GEDUNG MENGGUNAKAN BASE ISOLATOR DAN NON BASE ISOLATOR." Teras Jurnal 7, no. 2 (2018): 235. http://dx.doi.org/10.29103/tj.v7i2.134.

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<p>Perencanaan struktur gedung di Indonesia masih minim dalam penggunaan <em>base </em>i<em>solator</em> pada wilayah gempa kuat seperti Aceh.<em> </em>Penelitian ini mengkombinasikan antara <em>base isolator</em> dan Sistem Rangka Pemikul Momen Khusus (SRPMK) sebagai sistem penahan gaya gempa di wilayah gempa kuat. Penelitian ini bertujuan untuk mengetahui besarnya perbandingan respon gempa struktur <em>fixed base </em>SRPMK dan struktur SRPMK <em>base isolator</em> pada bangunan tingkat 10. Kedua struktur di analis

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Omkar, Sonawane, and B. Walzade Swapnil. "Effect of Base Isolation in Multistoried RC Regular and Irregular Building using Time History Analysis." International Journal of Engineering Research & Science 4, no. 5 (2018): 30–37. https://doi.org/10.5281/zenodo.1256472.

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<strong><em>Abstract</em></strong><strong>—</strong> <em>Base isolation (BI) is a technique that has been used around the world to protect the building structures from the damaging effects of earthquake. The installation of isolator in building at base level considerably increases the time period of the structure, which means it reduces the possibility of resonance of the structure giving rise to better seismic performance of the building. The analysis is performed to compare the effectiveness of base isolation in regular and irregular multi-storied RC frame building. For this study, 15

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Mazji Till Abadi, Musa, and Behnam Adhami. "Improving the Seismic Behavior of Symmetrical Steel Structures Under Near-Field Earthquake Using a Base Isolation Method Lead Rubber Bearing Isolator." Modern Applied Science 10, no. 7 (2016): 10. http://dx.doi.org/10.5539/mas.v10n7p10.

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<p>In this study, the function and application of seismic isolation system through lead rubber bearing isolator (LRB) in near-fault earthquakes are compared with fixed-base structures. As a result of their high frequency content, near-fault earthquakes impose huge energy on structures and cause severe damages. One of the appropriate solutions for this issue is the use of LRB which decreases the amount of imposed energy on structures. To improve the function of isolated structures under the near-fault earthquakes, isolators are designed in a way to tolerate the vertical component of earth

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Yurdakul, Muhammet, and Mehmet Burak Yıldız. "The effect of positioning of seismic isolators in a reinforced concrete building." Journal of Innovative Engineering and Natural Science 5, no. 1 (2024): 1–18. https://doi.org/10.61112/jiens.1514611.

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Construction costs are increasing day by day. The importance of building the safest structures at the lowest cost is also increasing. For this purpose, it is necessary to design the structure in the best possible way without sacrificing safety. One way to ensure buildings are safe even during severe earthquakes is to include seismic isolation at the design stage. Judging by studies, seismic isolators are generally located at the lowest story of the building. However, the location of the seismic isolator on the lowest column has not been defined. In this study, the seismic isolator was located

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Ngo, Van-thuyet. "ЭФФЕКТИВНОСТЬ КВАДРАТНОГО АРМИРОВАННОГО ВОЛОКНОМ ЭЛАСТОМЕРНОГО ИЗОЛЯТОРА ДЛЯ ЖЕЛЕЗОБЕТОННОГО ЗДАНИЯ ПРИ ЗЕМЛЯТРЕСЕНИЯХ". International Journal for Computational Civil and Structural Engineering 19, № 4 (2023): 182–95. http://dx.doi.org/10.22337/2587-9618-2023-19-4-182-195.

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Un-bonded fiber reinforced elastomeric isolator (U-FREI) is a relatively new type of multi-layer elastomeric isolator in which fiber layers are used as reinforcement to replace steel sheets in conventional steel reinforced elastomeric isolators. It is installed directly between the substructure and superstructure without any connection at the interfaces. Most of the previous studies on the U-FREIs supported to the base-isolated buildings are masonry or stone structures. In this study, the dynamic responses of a reinforced concrete (RC) building supported on square U-FREIs under the action of r

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Ozbulut, Osman E., and Stefan Hurlebaus. "A Comparative Study on the Seismic Performance of Superelastic-Friction Base Isolators against Near-Field Earthquakes." Earthquake Spectra 28, no. 3 (2012): 1147–63. http://dx.doi.org/10.1193/1.4000070.

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This paper presents a comparative seismic performance assessment of super-elastic-friction base isolator (S-FBI) systems in improving the response of bridges under near-field earthquakes. The S-FBI system consists of a steel-Teflon sliding bearing and a superelastic shape memory alloy (SMA) device. The other isolation systems considered here are lead rubber bearing (LRB), friction pendulum system (FPS), and resilient-friction base isolator (R-FBI). Each isolation system is designed to provide the same isolation period and characteristic strength. Nonlinear time-history analyses of an isolated

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Mishra, Arunendra Kumar, and Dr Raghvendra Singh. "A Review Paper on Comparative Analysis on RCC Structure with Energy Dissipation Device and Composite Structure." International Journal for Research in Applied Science and Engineering Technology 10, no. 12 (2022): 136–41. http://dx.doi.org/10.22214/ijraset.2022.47835.

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Abstract: In recent years considerable attention has been paid to research and development of structural vibration control devices with particular emphasis on mitigation of wind and seismic response of buildings. Many vibration-control measures like passive, active, semi-active and hybrid vibration control methods have been developed. Base isolation is a passive vibration control system. The isolator partially reflects and partially absorbs input seismic energy before it gets transmitted to the superstructure. Lead rubber bearing isolators are placed between the superstructure and foundation,

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Cancellara, Donato, and Mario Pasquino. "A New Passive Seismic Control Device for Protection of Structures under Anomalous Seismic Events." Applied Mechanics and Materials 82 (July 2011): 651–56. http://dx.doi.org/10.4028/www.scientific.net/amm.82.651.

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In this paper, the possibility offered by the Base Isolation System, designed according to the strategy of limitation seismic force, in order to ensure a significant level of robustness to the isolated superstructure, has been analyzed. In according to the strategy of limitation seismic force, a new seismic isolator called HDHSI (High Damping Hybrid Seismic Isolator) is proposed, obtained by the assembly in series of a LRB (Lead Rubber Bearing) and a FS (Friction Slider) with high friction coefficient. The HDHSI device is in contrast to the R-FBI (Resilient-Friction Base Isolation) isolator an

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Song, Sumin, and Sangseom Jeong. "Analyses of Pile-Supported Structures with Base Isolation Systems by Shaking Table Tests." Buildings 14, no. 5 (2024): 1382. http://dx.doi.org/10.3390/buildings14051382.

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The dynamic behavior of a pile-supported structure with a base isolator was investigated by using 1 g shaking table model tests considering soil–structure interaction (SSI). The emphasis was placed on evaluating the effect of the with/without developed base isolator on the dynamic behavior of end-bearing piles and structures. The experiment was performed through sweep tests and sinusoidal wave tests. As a result of the tests, the developed base isolator was found to effectively reduce the structure’s resonant frequencies and damped the response acceleration under resonance frequencies. Accordi

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Xia, Dong Zhou. "Study on Seismic Performance of Symmetrical Steel Framed Building that with and without ERB and FPS Isolators." Applied Mechanics and Materials 204-208 (October 2012): 2634–40. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.2634.

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As is known, base isolation can reduce earthquake energy that transferred from the ground motion to the structure by buffering it with a bearing layer at the foundation which has relatively low horizontal stiffness. The paper investigates the time history records of a two storied symmetrical steel framed isolated building with Elastomeric Rubber Bearing and Friction Pendulum Systems that under the Northridge earthquake, and the isolator parameters are calculated using the design guidelines of International Building Code (IBC2000) within the spirit of IS 1893–2002(7). And then, contrasting of t

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Et. al., Cici Jennifer Raj J,. "Influence at Mass of the Base Isolation System in Affecting the Higher Modes of Vibration." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 2 (2021): 1809–15. http://dx.doi.org/10.17762/turcomat.v12i2.1518.

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Base Isolation is a technology of mitigating the effects due to earthquakes with the aspect of dissipating the seismic waves away from the superstructure, by isolating the superstructure from the ground.This concept is widely essential to be implemented in structures(buildings) irrespective of many factors. There are several materials which could be implemented as base isolator, however the need in reduction of the number of the isolators is essential dueto various factors which a developing country finds difficult to implement. In this paper, a three-storey unsymmetrical building to be consid

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Yu, Nanhui, Huajiang Ouyang, Jiafan Zhang, Jianping Ye, Qinghua Yan, and Xiao Zheng. "Performance Analyses of Passive Vibration Isolator with Parallel Connection of Quasi-Zero Stiffness and Inerter Dampers." Applied Sciences 10, no. 19 (2020): 6894. http://dx.doi.org/10.3390/app10196894.

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This paper investigates a type of linear vibration isolator which incorporates two passive devices, negative stiffness elements and an inerter, into the conventional isolator (massstiffnessdamper). Two configurations of the passive devices are considered, respectively: (1) the direct parallel connection of the inerter and the negative stiffness element; (2) the series connection of the inerter with the viscous damper, which, together, is then connected with the negative stiffness element in parallel. Numerical evaluations are presented for the isolators subject to base harmonic and shock excit

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Liu, Haiping, and Pengpeng Zhao. "Displacement Transmissibility of a Four-Parameter Isolator with Geometric Nonlinearity." International Journal of Structural Stability and Dynamics 20, no. 08 (2020): 2050092. http://dx.doi.org/10.1142/s0219455420500923.

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This study is concerned with structural vibration reduction using a four-parameter isolator designed as a scissor-like structure, which can induce geometric nonlinearity during the deformation process. The displacement transmissibility of the isolator including the geometric nonlinearity under base excitations is thoroughly investigated. First, the dynamic model of the four-parameter isolator is presented. Then, by utilizing the harmonic balanced method (HBM), the steady-state solutions of the inertia mass and auxiliary spring of the proposed isolator are derived. The analytical solutions are

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