A nonlinear visco‐elastoplastic model for structural pounding

Bamer, Franz; Markert, Bernd

doi:10.1002/eqe.3095

Cited by 17 publications

(11 citation statements)

References 14 publications

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“…The right hand side of equation 1is the excitation term dependent on the ground accelerationẍ g (t), which is, here, subjected to all horizontal degrees of freedom defined in the influence vector f . Using explicit time integration [5,6] to solve equation (1), the response sample set R can be calculated: (1) g (t),ẍ (2)…”

Section: The Efficient Neural Network Prediction Strategymentioning

confidence: 99%

A machine learning enhanced structural response prediction strategy due to seismic excitation

Thaler

Bamer

Markert

2021

Proc Appl Math and Mech

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Section: The Efficient Neural Network Prediction Strategymentioning

confidence: 99%

A machine learning enhanced structural response prediction strategy due to seismic excitation

Thaler

Bamer

Markert

2021

Proc Appl Math and Mech

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“…Also, Isteita and Porter [25] conducted a study on the safe distance between buildings using a number of different methods for verification. Further studies on earthquake-induced collisions between insufficiently separated buildings, or bridge segments, were also recently conducted (see [26][27][28][29][30][31][32], for example).…”

Section: Introductionmentioning

confidence: 99%

Determination of Peak Impact Force for Buildings Exposed to Structural Pounding during Earthquakes

et al. 2019

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Structural pounding between adjacent, insufficiently separated buildings, or bridge segments, has been repeatedly observed during seismic excitations. Such earthquake-induced collisions may cause severe structural damage or even lead to the collapse of colliding structures. The aim of the present paper was to show the results of the study focused on determination of peak impact forces during collisions between buildings exposed to different seismic excitations. A set of different ground motion records, with various peak ground acceleration (PGA) values and frequency contents, were considered. First, pounding-involved numerical analysis was conducted for the basic parameters of colliding buildings. Then, the parametric study was carried out for different structural natural periods, structural damping ratios, gap sizes between buildings and coefficients of restitution. The results of the analysis conducted for the basic structural parameters indicate that the largest response of the analysed buildings was observed for the Duzce earthquake. The parametric study showed that the pounding-involved structural response depended substantially on all parameters considered in the analysis, and the largest response was observed for different ground motions. The results of the study presented in this paper indicate that the value of the peak impact force expected during the time of the earthquake does not depend on the PGA value of ground motion, but rather on the frequency contents of excitation and pounding scenario. It is therefore recommended that the peak impact force for buildings exposed to structural pounding during earthquakes should be determined individually for the specific structural configuration taking into account the design ground motion.

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“…In order to calculate impact force during ground motions, several equations were suggested to describe the impact damping ratio so as to determine the energy dissipation. Anagnostopoulos [9,10], Maison and Kasai [11], Jankowski [12,13], Mahmoud et al [14,15], Komodromos et al [16,17], Ye et al [18], Barros et al [19], Naderpour et al [20][21][22][23][24] as well as Bamer and Markert [25] analyzed a number of proposed models and also demonstrated the effects of earthquake-induced structural pounding. Moreover, Filiatrault et al [26] presented results of shake table tests of pounding between adjacent single-bay steel framed model structures and compared them with predictions resulting from two existing pounding analysis programs.…”

Section: Introductionmentioning

confidence: 99%

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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A nonlinear visco‐elastoplastic model for structural pounding

Cited by 17 publications

References 14 publications

A machine learning enhanced structural response prediction strategy due to seismic excitation

A machine learning enhanced structural response prediction strategy due to seismic excitation

Determination of Peak Impact Force for Buildings Exposed to Structural Pounding during Earthquakes

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

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