Earthquake-Induced Structural Pounding

Jankowski, Robert; Mahmoud, Sayed

doi:10.1007/978-3-319-16324-6

Cited by 59 publications

(90 citation statements)

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“…The two structures are considered first independent, namely no contact arises between the structures. The data for the two structures are consistent with the data available in [7], to which a elastoplastic with yield deformation forcedeformation relation is added. The data is tabulated in table 1.…”

Section: Linear and Non-linear Seismic Response Of The Reference Sdofsupporting

confidence: 80%

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Evaluation of the Pounding Forces During Earthquake Using Explicit Dynamic Time Integration Method

Nica

Pricopie

2017

Mathematical Modelling in Civil Engineering

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Pounding effects during earthquake is a subject of high significance for structural engineers performing in the urban areas. In this paper, two ways to account for structural pounding are used in a MATLAB code, namely classical stereomechanics approach and nonlinear viscoelastic impact element. The numerical study is performed on SDOF structures acted by ELCentro recording. While most of the studies available in the literature are related to Newmark implicit time integration method, in this study the equations of motion are numerical integrated using central finite difference method, an explicit method, having the main advantage that in the displacement at the i th +1 step is calculated based on the loads from the i th step. Thus, the collision is checked and the pounding forces are taken into account into the equation of motion in an easier manner than in an implicit integration method. First, a comparison is done using available data in the literature. Both linear and nonlinear behavior of the structures during earthquake is further investigated. Several layout scenarios are also investigated, in which one or more weak buildings are adjacent to a stiffer building. One of the main findings in this paper is related to the behavior of a weak structure located between two stiff structures.

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Section: Linear and Non-linear Seismic Response Of The Reference Sdofsupporting

confidence: 80%

“…One of the first of such analysis is the study of Anagnostopoulos [1], and recent work is the studies of Mate et al [2], [3], the studies of Jankowski [4][5][6][7] and the study of S.A. Salam [8]. The study of Barros [9] shows the benefit of equipping the structures with shear walls to protect structures against pounding effects.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Pounding Forces During Earthquake Using Explicit Dynamic Time Integration Method

Nica

Pricopie

2017

Mathematical Modelling in Civil Engineering

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“…Mahmoud and Jankowski (2011) and Jankowski and Mahmoud (2015) proposed the incorporation of a modified linear viscoelastic impact model, as presented in Figure 3A, in which the damping term is activated only during the approach period of collision, and the impact element's damping is defined by Eq. 2.…”

Section: Assessment Of the Impact Force During Collision Between Strumentioning

confidence: 99%

Effect of Planar Impact Modeling on the Pounding Response of Base-Isolated Buildings

Mavronicola

Polycarpou

Komodromos

2016

Front. Built Environ.

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During strong earthquake excitations, base-isolated buildings may collide, either with the surrounding moat wall or with adjacent buildings if the available clearance is exceeded. This undesirable possibility has been recently investigated by several researchers, adopting various types of force-based impact models. Evidently, an important issue that arises regarding such numerical studies is the way of taking into account potential impacts. This paper parametrically investigates the effects of impact modeling characteristics on the computed overall peak response of a base-isolated building that experiences structural pounding. Specifically, the Kelvin-Voigt impact model and various other modifications of this linear viscoelastic impact model are considered in the conducted analyses. In order to efficiently conduct this investigation, a specially developed software is used. The results indicate that the excitation's and isolator's characteristics do not significantly influence the variation in the normalized peak response of the superstructure. In contrast, the impact parameters can have a significant effect on the superstructures' peak accelerations with overestimations up to 70%. In general, the normalized peak response ratios of the interstory drifts tend to increase as the available seismic gap and the coefficient of restitution decrease, although the magnitude of the deviations is within 5%, which can be considered insignificant.

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“…The majority of those research works simulate the problem in two-dimensions [1][2][3][4][5][6][7][8][9], in an attempt to avoid the complexities associated with the 3D nature of the problem and the consequently excessive computational cost. However, the effect of crucial factors, which may excite the torsional vibration of a building and further increase the possibility of impacts during earthquakes, can be taken into consideration only through 3D simulations.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ground Motion Directionality on Seismic Response of Base-Isolated Buildings Considering Pounding to Adjacent Structures

Mavronicola¹,

Komodromos²

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Earthquake-Induced Structural Pounding

Cited by 59 publications

References 0 publications

Evaluation of the Pounding Forces During Earthquake Using Explicit Dynamic Time Integration Method

Evaluation of the Pounding Forces During Earthquake Using Explicit Dynamic Time Integration Method

Effect of Planar Impact Modeling on the Pounding Response of Base-Isolated Buildings

Effect of Ground Motion Directionality on Seismic Response of Base-Isolated Buildings Considering Pounding to Adjacent Structures

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