Earthquake induced pounding in friction varying base isolated buildings

Agarwal, Vivek; Niedzwecki, John M.; Lindt, John W. van de

doi:10.1016/j.engstruct.2007.01.026

Cited by 52 publications

(28 citation statements)

References 24 publications

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“…Seismic isolation for multistory buildings has been well evaluated and reviewed (Hong and Kim, 2004) [9]; (Barata and Corbi, 2004) [4]; (Agarwal, 2007) [1]; (Komodros, 2008) [15]; (Lu and Lin, 2008) [18]; (Spyrakos, 2009) [28]; (Panayiotis et al 2010); (Islam et al, 2011 a and b) [10,11]. A base isolator with hardening beVol.…”

Section: Introductionmentioning

confidence: 98%

Parameters Influencing the Response of a Base-Isolated Building

Ounis¹,

Ounis²

2013

Slovak Journal of Civil Engineering

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In order to illustrate the effect of damping on the response of a base-isolated building, a large investigation was undertaken. It consists of a parametric study, which takes into account the progressive variation of the damping ratio (10% to 30%) under different seismic excitations. Using a time history analysis of displacements and accelerations at various levels of the building, the results show that the efficiency of the isolator increases with the assumed damping ratio, provided that the latter is less than or equal to 20%. Beyond this value, the isolator becomes less useful.

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Section: Introductionmentioning

confidence: 98%

Parameters Influencing the Response of a Base-Isolated Building

Ounis¹,

Ounis²

2013

Slovak Journal of Civil Engineering

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“…Through parametric analysis, [14], [13] studied the effects of pounding of a seismically isolated building with the surrounding retaining wall, revealing the damaging effects of structural impact on the effectiveness of seismic isolation. Considering a sliding isolation system with varying friction, [4] investigated the earthquake induced upper story pounding response of two buildings in close proximity. They concluded that the impact force is very high when the sliding friction coefficient is constant, while it becomes quite low when the friction coefficient is allowed to vary with velocity.…”

Section: Mohammedismail@upcedumentioning

confidence: 99%

Hybrid RNC-isolation of structures under near-fault earthquakes

Ismail

Pozo

Rodellar

2012

2012 American Control Conference (ACC)

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Abstract-The problem of combining active damping with a purely passive isolation system, with hysteretic damping, to reduce possible pounding effects under near-fault ground motions is addressed. The used isolation system is a recently proposed one that is referred to as roll in cage (RNC) isolator. It has an integrated buffer mechanism to prevent excessive bearing displacements under strong seismic excitations. Therefore, possible pounding under such strong earthquakes will be within the bounds of RNC isolator to avoid adjacent structural pounding. Active control is invoked at a certain bearing displacement to reduce it before reaching its design limit, after which pounding takes place. It was found that increasing the RNC isolator's inherent hysteretic damping reduces the bearing displacement and consequently alleviates or even eliminate pounding. Moreover, the integration of active control, at smaller bearing displacements, with the RNC isolator can reduce the bearing displacement but adds more rigidity to the isolation system, which leads to less efficient isolation.

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“…[2]. But at the same time the given program complexes do not allow the engineer-builder to operate mobile calculation taking into account constantly changing parameters of the system and to estimate received results with experimental data [3]. Program complexes of the "average" class (Lyre, MicroFE, etc.)…”

Section: Introductionmentioning

confidence: 99%

Static calculation of bearing construction elements taking into account physical nonlinearity

Zhauyt¹,

Sakenova²,

Arinova³

et al. 2017

Vib. proced.

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Abstract. One of the most important characteristics of construction behavior is physical nonlinearity which appears in the course of deformation between strain and deformations. Its account complicates algorithm; therefore, many modern construction calculations are spent in an elastic stage that lead to the overestimated results, not corresponding to real work of the construction. In this connection, it is necessary to develop such models of construction, which fully enough and unequivocally confirm to investigated objects and processes of their deformation.

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Earthquake induced pounding in friction varying base isolated buildings

Cited by 52 publications

References 24 publications

Parameters Influencing the Response of a Base-Isolated Building

Parameters Influencing the Response of a Base-Isolated Building

Hybrid RNC-isolation of structures under near-fault earthquakes

Static calculation of bearing construction elements taking into account physical nonlinearity

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