Base Isolation for Seismic Protection — The new hospital in Lisbon

Guerreiro, Lúıs; Ferreira, J. P. C. Lobo; Colato, Gian Paolo; Castellano, Gabriella; Baldo, Paolo

doi:10.2749/222137805796271503

Cited by 5 publications

(5 citation statements)

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“…The force-displacement curves, obtained by graphically sampling the plots reported in [16,17] and the hysteretic loops predicted by the proposed fitting method, are shown comparatively in Figs. 4 and 5.…”

Section: Fitting the Extended Bouc-wen Model To Hysteretic Loops Of Smentioning

confidence: 99%

“…The objective function is defined as a sum of five indexes, three of them having integral formulation and the other two being derived from the relations (15) and (16). The partial performance indices are:…”

Section: Ga Optimisationmentioning

confidence: 99%

“…As the measured data have a certain degree of imprecision and the number of model parameters is relatively large, one of the most suitable methods to obtain a sufficiently accurate model for practical applications is the GA approach. The approach is validated by the results obtained in fitting the extended model to hysteretic loops exhibited by two types of seismic protection devices [16,17]. These analytical models are then employed to investigate the efficiency of the base isolation or bracing devices by comparing the seismic response of protected and unprotected structures.…”

Section: Introductionmentioning

confidence: 99%

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Identification of an extended Bouc–Wen model with application to seismic protection through hysteretic devices

2010

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In this paper is proposed an extended Bouc-Wen model for improving its capability to approximate experimental symmetric hysteretic loops. On the basis of the generalized equation there are defined integral and differential conditions that describe the essential geometric properties of a hysteretic curve. Next, a new method based on Genetic Algorithms is developed to identify the Bouc-Wen model parameters from experimental hysteretic loops obtained from periodic loading tests. The performance of presented approach is illustrated for two types of seismic protection devices with hysteretic characteristics: elastomeric base isolators and buckling restrained dissipative braces. The applicability of proposed method is highlighted by using the derived models to analyse by numerical simulation the efficiency of these devices for reducing seismic response of a three stories civil structure.

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Section: Fitting the Extended Bouc-wen Model To Hysteretic Loops Of Smentioning

confidence: 99%

Section: Ga Optimisationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Identification of an extended Bouc–Wen model with application to seismic protection through hysteretic devices

2010

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“…Technologies for seismic protection have been developed, in order to design structures in highly seismic hazardous area. One of the most interesting solutions applied in bridges are passive energy dissipation systems [1]. Isolation systems can be steel hysteretic dampers or viscous dampers.…”

Section: Introductionmentioning

confidence: 99%

Numerical Design and Analysis Isolated Single Span Pedestrian Bridge Under Seismic Load

Amin¹

2020

IJEAST

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In recent time earthquake has been the most dangerous threat to structures. As Bangladesh has a high risk of facing earthquake it is necessary to ensure safety of the structures. Bridges are very vulnerable to earthquake ground motion. In this study a single span composite bridge is modelled with SAP 2000 and is analysed. The bridge is analysed without using isolators subjected to modified El Centro data for 15, 20 seconds. Nonlinear time history analysis was performed. Then this same bridge is analysed using a lead rubber bearing at one end of the bridge. The behaviour of the bridge is observed using isolators. From this analysis displacement vs time and acceleration vs time curves are found for different El Centro data. For base isolated and not isolated condition this results are compared. The comparison shows how seismically isolated condition can improve the response of bridge during earthquake.

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“…During the last five years FIP Industriale provided elastomeric isolators for the Hospital "Da Luz" in Lisbon, the first isolated building in Portugal [20,21], for the 27 storey Sea Plaza Hotel, part of the development of the Black Sea city of Sochi (Russia) in view of the 2014 Olympic Winter Games, and for the retrofit of a fire station in Basilea (Switzerland). The Taipei 101 skyscraper in Taipei (Taiwan) with its 508 m has been the world's tallest building since 2004.…”

Section: Applications In Buildings Outside Italymentioning

confidence: 99%

Recent applications of Italian anti-seismic devices

Castellano

Infanti

2009

WIT Transactions on the Built Environment

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In the last three decades anti-seismic devices, in particular those implementing the passive control of structural response through seismic isolation and energy dissipation, have undergone great development, finding many applications in both new and existing structures. Since the 1970s Italy has been giving a strong contribution to said development, so that it soon became the country with the largest number of seismically isolated bridges (over 150 bridges and over 100 km by 1992). The application of passive control techniques in Italian buildings was slow at the beginning; however in last five years, due to the change of seismic code in 2003, many buildings benefited from different types of antiseismic devices. New buildings, in particular strategic buildings such as hospitals, are more and more often protected by seismic isolation, which guarantees their full functionality even immediately after a strong earthquake. Seismic isolation has also been implemented to retrofit existing buildings. More often existing RC framed buildings, in particular schools, have been retrofitted through dissipative bracings, exploiting their capability to reduce the ductility request of structural members and thus the damage. Since the late 1980s, Italian anti-seismic devices have been applied in other countries too -ranging from Mediterranean seismic-prone countries to the USA, from Bangladesh to South America. Some of the outstanding projects in which Italian anti-seismic devices have been used are the Rion-Antirion Bridge in Greece, the Taipei 101 skyscraper in Taipei, the Stonecutters Bridge in Hong Kong, the St. Francis Shangri-La Towers in Manila, etc. Some recent applications of Italian antiseismic devices are described in this paper.

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Base Isolation for Seismic Protection — The new hospital in Lisbon

Cited by 5 publications

References 0 publications

Identification of an extended Bouc–Wen model with application to seismic protection through hysteretic devices

Identification of an extended Bouc–Wen model with application to seismic protection through hysteretic devices

Numerical Design and Analysis Isolated Single Span Pedestrian Bridge Under Seismic Load

Recent applications of Italian anti-seismic devices

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