Structural pounding between adjacent buildings subjected to strong ground motions. Part II: The effect of multiple earthquakes

Efraimiadou, Sofia; Hatzigeorgiou, George D.; Beskos, D.E.

doi:10.1002/eqe.2284

Cited by 52 publications

(21 citation statements)

References 28 publications

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“…Due to the high number of degrees of freedom and the nonlinearity as well as nonsmoothness of the contact problem, the evaluation of the multiple structure pounding is time-consuming [9,10]. As a result, the evaluation of the response to a whole frequency range can be computationally disproportionately expensive.…”

Section: Introductionmentioning

confidence: 99%

A Structural Pounding Formulation Using Systematic Modal Truncation

Shi

Bamer

Markert

2018

Shock and Vibration

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The evaluation of the response function of the structural pounding problem is generally time-consuming if high-order systems are applied. The well-known modal truncation strategy is outstandingly efficient for a single linear ground-accelerated structure. However, for the analysis of the structural pounding problem, the classical modal truncation technique turns out to be ineffective as additional higher frequency motion due to possible contact impact occurs. This makes the determination of how many modes should be taken into account in order to obtain a required level of accuracy more difficult. Therefore, in this paper, a systematically controlled modal truncation strategy adapted to the seismic pounding formulation under consideration of high nonlinearity and nonsmoothness of contact problems is introduced. A comparative study of the classical and the controlled modal truncation technique is presented and a comparison with the commercial software package ABAQUS © is provided. It is shown that the computational accuracy is significantly improved when applying the new systematically controlled modal truncation strategy.

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Section: Introductionmentioning

confidence: 99%

A Structural Pounding Formulation Using Systematic Modal Truncation

Shi

Bamer

Markert

2018

Shock and Vibration

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“…After the Tohoku-Oki earthquake with magnitude Mw9.0 occurring on March 11, 2011, in Japan, a large number of aftershocks struck the same area and the greatest one reached magnitude Mw7.9. Due to the potentially devastating effect of aftershocks, a great number of researchers attempted to investigate the effects of aftershocks on different structural systems, including the single-degreeof-freedom systems [2][3][4][5][6][7][8][9][10], reinforced concrete structures [11][12][13][14][15][16][17][18], steel structures [19][20][21][22], and wood-frame buildings [23][24][25]. As the last defense against nuclear leakage, the reinforced concrete containment (RCC) building subject to sequential ground motions is researched by [26].…”

Section: Introductionmentioning

confidence: 99%

Sequential Ground Motion Effects on the Behavior of a Base-Isolated RCC Building

Zheng

Pan

Bao

2017

Mathematical Problems in Engineering

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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 isolation can significantly attenuate the earthquake shaking of the RCC building under not only single earthquakes but also seismic sequences. It is also found that the adverse aftershock effect on the RCC can be reduced due to the base isolation applied to the RCC. More importantly, the study indicates that disregarding aftershocks can induce significant underestimation of the isolator displacement for base-isolated RCC buildings.

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“…Nowadays natural disasters such as flood and earthquakes have been frequently occurred in some certain areas [8]- [11]. These conditions will change the condition of land and building in the affected areas hence the ground level following the flood and earthquakes occurred could heave or dwindle [12]- [14]. If the ground level changes then the lightning air terminal protective angle which is calculated in regarding the land and building before the disaster take place become not reliable anymore to provide a appropriate protection [15]- [16].…”

Section: Introductionmentioning

confidence: 99%