Seismic Analysis of Structures

Datta, T. K.

doi:10.1002/9780470824634

Cited by 143 publications

(63 citation statements)

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“…Figure 5 displays the general framework: N floating unit cells are embedded into the ground, for attenuation of the seismic wave propagation. As observed in Figure 5, it is evident that the proposed configuration is intended for handling surface waves (e.g., Rayleigh and Love waves) (Datta, 2010). Owing to a combination of low frequency content, high amplitude and large duration [Bolt, (2001), p.19], surface waves are primarily contributing to damage and form the main target of seismic isolation systems.…”

Section: Conceptual Unit Cell Designmentioning

confidence: 99%

On the feasibility of structural metamaterials for seismic-induced vibration mitigation

Wagner

Dertimanis

Antoniadis

et al. 2016

IJEIE

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This paper summarizes recent efforts toward development of locally resonant metamaterial structures for seismic isolation purposes. The metamaterial structure forms a blind zone in the frequency domain, inhibiting the propagation of waves characterised by frequencies lying within this range. The feasibility of fashioning such systems in the [0.5, 5] Hz frequency band, linked to earthquake induced response, is here explored. An analytical and numerical investigation is undertaken relying on Bloch's theory and classical vibration analysis. The analysed case-studies pertain to both one-dimensional and two-dimensional mass-in-mass lattice systems investigated for overlapping sub-bands. On the basis of the offered analysis, a basic unit cell design is proposed, and a parametric study is carried out revealing the critical influence of the external-to-internal stiffness ratios adopted for the unit cell design. A further discussion is offered with respect to limitations and extensions of the proposed designs.Keywords: seismic isolation; metamaterials; metastructures; Bloch's theory; 1D and 2D vibration response analysis; periodic lattice; mass-in-mass unit cells; band-gaps. On the feasibility of structural metamaterials 21Reference to this paper should be made as follows: Wagner, P.R., Dertimanis, V.K., Antoniadis, I.A. and Chatzi, E.N. (2016)

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Section: Conceptual Unit Cell Designmentioning

confidence: 99%

On the feasibility of structural metamaterials for seismic-induced vibration mitigation

Wagner

Dertimanis

Antoniadis

et al. 2016

IJEIE

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“…The value of coefficients, α and β , depends on the soil properties; at the surface of the earth, their values varies in the range of 5 to 7 km.s -1 and 3 to 4 km.s -1 , respectively (Datta, 2010). According to Figure 1, the angle of incidence, θ 0 , and the angle of reflection of SV waves, θ 2 , are equal.…”

Section: Incidence Sv Wavesmentioning

confidence: 99%

Seismic response of aboveground steel storage tanks: comparative study of analyses by six and three correlated earthquake components

Ghazvini

Tavakoli

Neya

et al. 2013

Lat. Am. j. solids struct.

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“…Yerüstü ve yeraltı yapıların sismik analizi için ZYE'nin düşünülmesi zeminin veya temelin çok sağlam olmaması durumunda önem kazanabilir. Yapı deprem etkisi sürecinde çevresindeki zemini deforme ederek onunla bir etkileşime girer (Datta, 2010). Bir deprem açık arazideki zeminde hem yatay hem de düşey yönde yer değiştirmelere neden olur.…”

Section: Introductionunclassified

“…Kinematik etkileşim yapılarda farklı titreşim modlarını da oluşturabilmektedir (Kramer, 2003). Ayrıca kinematik etkileşim temele rotasyonel bir hareketi de verebilir (Datta, 2010). Şekil 1.…”

Section: Introductionunclassified

Effects of Soils with Different Properties on Natural Period of Structure at RC High Rise Building

Derdiman

2013

AKU-J. Sci. Eng.

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ÖzetZemin yapı etkileşimi (ZYE) zemine ve yapıya bağlı olarak yapı üzerinde önemli etkilere neden olabilmektedir. Bu etkilere neden olan ZYE yapı davranışı açısından çoğu zaman olumlu katkı sağlarken yer hareketine bağlı olarak bazı zeminlerde olumsuz olabilmektedir. Zeminin sertlik derecesi bu etkileşimde önemli bir etkiye sahiptir. Bu çalışmada zemin-yapı etkileşimi açısından farklı özelliklere sahip zeminlerin yüksek yapılara etkisi araştırılmıştır. Bunun için 7 farklı elastisite modulune sahip zemin üzerinde 5, 10 ve 15 katlı yapı modelleri öngörülmüştür. Modellerin tamamı betonarme çerçeveli sistem olarak düşünülmüş ve çözümde sonlu elemanlar yöntemi kullanılmıştır. Yapıların salınım periyodundaki değişim ve değişik deprem spektrumlarında maruz kalacakları ivme (PSA) farklı zeminler için birbirleri ile karşılaştırılmıştır. Karşılaştırma sonucunda zeminin düşük elastisite modüllerine bağlı olarak ZYE yüksek yapının salınım periyodunu önemli derecede değiştirebileceği gözlenmiştir. Effects of Soils with Different Properties on Natural Period of Structure at RC High Rise Building Key words AbstractSoil structure interaction can cause important effects on structure dependent on soil and structure. Soil structure interaction with these effects provides a positive contribution to the behavior of this structure at most of the time. But sometimes these effects make worse structure behavior. Young's Modulus of soil has an important role in this interaction. In this study, effects of soils with different young's modulus on high rise building according to soil structure interaction were investigated. For this, 5-storey, 10-storey and 15-storey building models are created on the soils with 7 different soil properties were analyzed by finite element method. Values of period and acceleration (PSA) according to different earthquake spectrum were compared with each other for different soils. As a result of the comparison, at soft soils (lower values of young's modulus), soil-structure interaction on periods causes important influential changes on dynamic characteristic of RC high-rise building.

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Seismic Analysis of Structures

Cited by 143 publications

References 0 publications

On the feasibility of structural metamaterials for seismic-induced vibration mitigation

On the feasibility of structural metamaterials for seismic-induced vibration mitigation

Seismic response of aboveground steel storage tanks: comparative study of analyses by six and three correlated earthquake components

Effects of Soils with Different Properties on Natural Period of Structure at RC High Rise Building

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