Base-isolated building with high-damping spring system subjected to near fault earthquakes

Tornello, Miguel E.; Sarrazín, Mauricio

doi:10.12989/eas.2012.3.3_4.315

Cited by 7 publications

(3 citation statements)

References 7 publications

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“…Islam, Jameel, Uddin, and Jumaat (2012) introduced the proficient Building elevation for using isolation system in seismic vulnerable buildings. Tornello & Sarrazin (2012) have dealt with the behavior of BI building using high damping spring system under near fault earthquakes. Bhuiyan, Okui, Mitamura, & Imai (2009) introduced HDRB rheology model to analyse the seismic effects as well as the identification of nonlinear viscosity.…”

Section: State Of the Artmentioning

confidence: 99%

Evaluation of story response in seismic prone building construction using high damping rubber bearing

Islam

2019

rdlc

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Significantly growing construction in the earthquake vulnerable regions needs appropriate handling of seismic prone buildings. Insertion of high damping rubber bearing (HDRB) at the building base might be an attractive option for structural safety and economy. This study deals with incorporation of HDRB device in building base and focus on the change of structural behavior for its different categories. Structural responses of base isolated (BI) buildings under site-specific seismic excitation are analyzed. The superstructure of multistoried buildings is represented by a finite element (FE) model comprising multi-degree of freedom. The structural analyses involve the BI as well as fixed base (FB) buildings. The commercial finite element packages SAP 2000 has been used to determine the variation in structural responses performing static and dynamic analyses. Twenty prototype building frames are modelled considering four HDRB categories. The HDRB is found to make the buildings more flexible reducing the seismic responses. The increased natural period leads more importance of building flexibility effects and so the horizontal shift of superstructure increases. The story shear reduces significantly and eventually the reduced overturning moment indicates that the forces are highly overestimated if the bearing is not employed. The acceleration profile presents good agreement with the isolation strategy. Without bearing, story accelerations will be largely glorified. To lessen corresponding story shears and story accelerations HDRB can be chosen as per the specifications and necessities. Such HDRB isolated buildings can withstand rather high seismic tremors in a safe and efficient manner due to radical reduction of story responses and good structural flexibility.

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Section: State Of the Artmentioning

confidence: 99%

Evaluation of story response in seismic prone building construction using high damping rubber bearing

Islam

2019

rdlc

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“…Damping can achieve a shear strain from 100% to 10-20%. The use of a high damping rubber bearing for the seismic seclusion of structures has turned out to be a very effective strategy for providing security from tremor harm ( [4], [16]). High damping rubber bearings standout amongst the most frequently utilized disengagement frameworks for structures since the mechanical qualities of their various orientations may depend largely on the mixes used as part of a high damping elastic [10].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Steel Frame Structures with the Response of Seismic Isolators

Beykzade

Baghchesaraei

2020

Civil and Environmental Engineering Reports

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As science keeps evolving over time, new solutions are being put forward for reducing structural damage. One such solution is the use of seismic isolation systems. Seismic isolation systems reduce the response of structures to the force of earthquakes by reducing the input (force) acceleration when the natural period of the structure increases. Therefore, the use of seismic isolation systems is recommended in the analysis of diverse structures. This study was carried out on seismically isolated buildings with 8, 10, and 12 regular steel floors, modeled by a non-linear isolator in two-, or three-second periods. The differences in data and the responses of the buildings were compared with fixed-base buildings with 8, 10, and 12 floors.

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“…The isolation system provides additional flexibility as well as energy dissipation capability by offering such separation [1]. A new generation device, the high damping rubber bearing (HDRB), has brought an innovative aspect for analyzing and designing base isolated (BI) structures [2][3][4][5][6]. The HDRB rheology model [7], mechanical models [8] and the stiffening importance of HDRBs [9] are some of the investigations done to predict structural responses of BI buildings.…”

Section: Introductionmentioning

confidence: 99%

Diminishing Seismic Effect on Buildings Using Bearing Isolation

Islam¹

2018

IIUMEJ

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Adopting suitable seismic protection techniques is presently a foremost concern worldwide and has become a governing principle in the growing construction industry globally. Thus, a rapid upsurge in infrastructure development in seismic-prone areas requires proper treatment for building structures. Therefore, the aim of the study is to incorporate a rubber bearing isolation device in a building base in order to diminish the seismic effect on the superstructure. The changes of structural parameters and responses of fixed-based buildings for applying High Damping Rubber Bearing (HDRB) are investigated under site-specific ground excitation. Twenty representative buildings have been used to examine the responses employing four types of HDRB systems. The study reveals that the HDRB makes the structure more flexible, offering reduced structural responses. The introduction of HDRB may help to decrease floor moment by 31~55%, which can allow the structures to withstand comparatively high seismic tremors safely and efficiently. The base isolated structures experience significant lateral shift between 87.15 and 130.15 mm, and relative floor displacement is below 3% because of additional flexibility. The effective inertia height for the BI buildings remains under two-thirds of building elevation showing triangular distribution concentrating to the top story level. The reduction in forces, moments, and relative displacements of the structural members by applying HDRB can ensure economic design and higher structural safety against seismic excitation. ABSTRAK: Penerapan teknik yang sesuai bagi pelindungan gelombang seismos menjadi penekanan semasa di seluruh dunia dan telah menjadi prinsip penentu dalam industri pembinaan secara global. Oleh itu, kenaikan yang cepat dalam pembangunan infrastuktur dalam kawasan terdedah kepada gelombang seismos memerlukan penyelenggaraan yang betul bagi struktur bangunan. Jadi, matlamat kajian ini adalah bagi menggabungkan getah alat pengandar asing dalam teras bangunan bagi mengurangkan kesan seismos pada struktur asas. Perubahan pada parameter struktur dan tindak balas tapak-tetap bangunan bagi penggunaan teknik High Damping Rubber Bearing (HDRB) dikaji di bawah setiap kenaikan getaran gelombang sebenar bawah tanah. Dua puluh bangunan telah digunakan bagi menilai tindak balas terhadap penggunaan empat jenis sistem HDRB. Kajian menunjukkan HDRB membuatkan struktur lebih fleksibel, dan mengurangkan tindak balas terhadap struktur. Penggunaan HDRB dalam pembangunan membantu mengurangkan momen lantai sebanyak 31~55%, di mana struktur bangunan lebih tahan terhadap gegaran tinggi secara selamat dan berkesan. Struktur asas yang terasing mengalami peralihan sisi yang ketara antara 87.15 dan 130.15 mm, dan anjakan lantai relatif di bawah 3% dengan penambahan sistem fleksibel ini. Ketinggian inertia berkesan bagi bangunan BI kekal di antara dua pertiga ketinggian bangunan. Ini menunjukkan pengagihan segitiga tertumpu pada aras atas bangunan. Pengurangan pada daya, momen dan perubahan relatif struktur menggunakan HDRB dapat memastikan reka bentuk lebih ekonomi dan selamat pada bangunan tinggi daripada sebarang gelombang seismos.

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Base-isolated building with high-damping spring system subjected to near fault earthquakes

Cited by 7 publications

References 7 publications

Evaluation of story response in seismic prone building construction using high damping rubber bearing

Evaluation of story response in seismic prone building construction using high damping rubber bearing

Evaluation of Steel Frame Structures with the Response of Seismic Isolators

Diminishing Seismic Effect on Buildings Using Bearing Isolation

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