Numerical simulation of potential seismic pounding among adjacent buildings in series

Raheem, Shehata E. Abdel; Fooly, Mohammed Y. M.; Shafy, Aly G. A. Abdel; Taha, A.; Abbas, Yousef A.; Latif, Mohamed M.S. Abdel

doi:10.1007/s10518-018-0455-0

Cited by 38 publications

(20 citation statements)

References 37 publications

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“…Comparison between different impact force models using Equations (4)- (7) for one chosen CR value equal to 0.5 is shown in Figure 1. The figure clearly indicates that different equations show visible different results for the same CR value.…”

Section: Existing Formulae For Impact Forcementioning

confidence: 99%

“…The results of the numerical simulations, together with the experimental results, are shown in Figure 9. The numerical analysis has been conducted using Equations (5)- (7) and (13). Parameters of different models used in the numerical analysis have been determined through iterative procedure so as to equalize the peak impact force determined from the simulations with the peak impact force obtained from the experiment (see [36] for details).…”

Section: Impact Force Time Historymentioning

confidence: 99%

“…The results of numerical analysis are also shown in Figure 11. The normalized root mean square errors have been calculated using Equation (14) for different impact force models based on Equations (5)- (7) and (13) and the results are presented in Table 3. It can be seen from the table that the best accuracy of simulations is obtained by using the proposed formula.…”

Section: Pounding Between Two Structures During Earthquakementioning

confidence: 99%

“…It is obviously accepted that insufficient separation distance between buildings, or bridge segments, provides many damages due to collisions during earthquakes, which is called structural pounding [1,2]. This phenomenon occurs when critical distance cannot cover relative movements under seismic excitations, and large lateral displacement exceeds separation distance between adjacent structures or structural elements [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Effective Formula for Impact Damping Ratio for Simulation of Earthquake-induced Structural Pounding

et al. 2019

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Structural pounding during earthquakes may cause substantial damage to colliding structures. The phenomenon is numerically studied using different models of collisions. The aim of the present paper is to propose an effective formula for the impact damping ratio, as a parameter of the impact force model used to study different problems of structural pounding under seismic excitations. Its accuracy has been verified by four various approaches. Firstly, for the case of collisions between two structural elements, the dissipated energy during impact has been compared to the loss of kinetic energy. In the second stage of verifications, the peak impact forces during single collision have been analyzed. Then, the accuracy of different equations have been verified by comparing the impact force time histories for the situation when a concrete ball is dropped on a rigid concrete surface. Finally, pounding between two structures during earthquakes has been studied. The results of the analysis focused on comparison between dissipated and kinetic energy show relatively low errors between calculated and assumed values of the coefficient of restitution when the proposed equation is used. In addition, the results of the comparison between experimentally and numerically determined peak impact forces during single collision confirm the effectiveness of the approach. The same conclusion has been obtained for the whole impact time history for collision between a ball and a rigid surface. Finally, the results of the comparative analysis, conducted for pounding between two structures during an earthquake, confirm the simulation accuracy when the proposed approach is used. The above conclusions indicate that the proposed formula for impact damping ratio, as a parameter of impact force model for simulation of earthquake-induced structural pounding, is very effective and accurate in numerical simulations in the case of different scenarios.

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Section: Existing Formulae For Impact Forcementioning

confidence: 99%

Section: Impact Force Time Historymentioning

confidence: 99%

Section: Pounding Between Two Structures During Earthquakementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effective Formula for Impact Damping Ratio for Simulation of Earthquake-induced Structural Pounding

et al. 2019

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“…Response spectrum analysis does not provide realistic seismic analysis in structures with damage progression, hysteretic deterioration, inelastic response, second-order effect, and other significant nonlinear behaviors. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] For these cases, the structural design can be enhanced with the use of accelerograms for the time history analysis. Real accelerograms have irregular response spectrums and are not directly related to the code defines design spectra.…”

Section: Introductionmentioning

confidence: 99%

An artificial accelerogram generator code written in Matlab

Ferreira

Moutinho

Cunha

et al. 2020

Engineering Reports

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Artificial accelerograms are a very useful tool for designing structures against seismic hazards; in particular, when structures exhibit nonlinear behavior. This paper presents a Matlab code for generating artificial accelerograms to match code‐defined spectra based on the modification of actual earthquake ground motions. In this case, while the code is written to generate Eurocode 8‐compatible accelerograms, it can be easily adapted to any other code in the world. The proposed code determines the earthquake spectra and Fourier Transform using the Fast Fourier Transform algorithm and then modifies the Fourier Transform in order to match the predefined spectra. The code also includes instructions for outlining different actual ground motions, soil, and earthquake type. The code is geared to students and researchers in the field of Structural and Earthquake Engineering. The objective of this work is to provide a Matlab code that can be integrated in other research programs such as seismic structural analysis, structural control software, or other codes.

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Analysis of the Global Dynamic Behavior of Metallic Adjacent Building Structures with Non‐Linear Behavior Under Structural Pounding Induced by Seismic Excitations

2022

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This study aims to analyse the global dynamic behaviour of two metallic structures with equal or different heights subjected to structural collisions induced by earthquakes that represent a seismic region in Portugal. Numerical models of the structures were developed with a finite element software, and the respective non‐linear behaviour will be idealized using the fibre model at the critical regions considered. The Kelvin‐Voigt model will be used to simulate the magnitude of pounding forces. The phenomenon of structural pounding influences the dynamic response of the structures. This influence is generally more evident when structures are of different heights.

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Numerical simulation of potential seismic pounding among adjacent buildings in series

Cited by 38 publications

References 37 publications

Effective Formula for Impact Damping Ratio for Simulation of Earthquake-induced Structural Pounding

Effective Formula for Impact Damping Ratio for Simulation of Earthquake-induced Structural Pounding

An artificial accelerogram generator code written in Matlab

Analysis of the Global Dynamic Behavior of Metallic Adjacent Building Structures with Non‐Linear Behavior Under Structural Pounding Induced by Seismic Excitations

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