Impact Stiffness of the Contact-Element Models for the Pounding Analysis of Highway Bridges: Experimental Evaluation

Guo, Anxin; Cui, Lili; Li, Hui

doi:10.1080/13632469.2012.693243

Cited by 20 publications

(15 citation statements)

References 28 publications

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“…Simulations have also been carried out for three-dimensional relative motion between the building floors [22][23][24]. Results from several large and small scale experiments have been published [20,21,[24][25][26][27][28][29][30][31][32]. Unfortunately, despite these accomplishments, the pounding simulations have several persistent limitations, i.e.…”

Section: Introductionmentioning

confidence: 99%

Limitations in Simulation of Building Pounding in Earthquakes

Khatiwada

Chouw

2014

International Journal of Protective Structures

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Several methods have been proposed for the analysis of building pounding. In previous studies some of these models have been considered in isolation, while others have been studied as a specific configuration of buildings. Although the pounding force predicted by each model varies significantly, results from the evaluation of these models have been inconclusive. This leads to uncertainties in the practical applications of pounding force models. This study addresses the limitations in numerical and experimental simulations of building pounding. The Sears impact model is suggested to overcome some of these limitations. It is concluded that contact stiffness and coefficient of restitution are the main reason for the diverse numerical results, while differences observed in the experiments could be due to sampling rate and instrumental constraints.

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Section: Introductionmentioning

confidence: 99%

Limitations in Simulation of Building Pounding in Earthquakes

Khatiwada

Chouw

2014

International Journal of Protective Structures

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“…This phenomenon can be partly attributed to the performance of the accelerometers. Although the model of the accelerometers of references was not provided, this deduction can be clearly demonstrated for reference . Force‐balance accelerometers with a measurement frequency range of 0–30 and 0–100 Hz were used.…”

Section: Resultsmentioning

confidence: 99%

“…Force‐balance accelerometers with a measurement frequency range of 0–30 and 0–100 Hz were used. The bridge model used in the study of reference is identical to the model used in this study. However, because 0–100 Hz force‐balance accelerometers were used for the measurement of the acceleration responses, the measured acceleration signals in reference were approximately 10 times smaller than that of this study.…”

Section: Resultsmentioning

confidence: 99%

A phenomenological contact‐element model considering slight non‐uniform contact for pounding analysis of highway bridges under seismic excitations

Guo

Cui

et al. 2015

Earthq Engng Struct Dyn

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Summary Impact stiffness is an important parameter of the contact‐element models for the analysis and prediction of the pounding responses of highway bridges subjected to seismic excitations. This paper presents a pounding experiment to investigate the inconsistencies between the theoretical and experimental values of the impact stiffness both for the linear impact model and Kelvin impact model presented in literature. The analysis of the impact acceleration and acoustic emission signals indicates that accelerometer performance and the non‐uniform pounding are two important factors that affect the pounding responses. Based on this observation, a phenomenological contact‐element model is proposed based on the actual contact state of highway bridges during the impact. To evaluate the effectiveness of the proposed impact model, a numerical simulation is subsequently conducted. A comparison of the results indicates that the proposed impact model can effectively predict the pounding responses of highway bridges. Copyright © 2015 John Wiley & Sons, Ltd.

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“…34,35 Bridges have also been separately analyzed in many cases. 34,[36][37][38][39][40] Furthermore, a wide literature 34,[40][41][42] published the results obtained by conducting pounding experiments on framed buildings and highway bridges. In particular, pounding response of bridge superstructures subjected to ground motions varying in space has been studied by Li-Xiang et al 43 in both experimental and analytical way.…”

Section: Padjs-bridgesmentioning

confidence: 99%

Influence of the characteristics of isolation and mitigation devices on the response of single‐degree‐of‐freedom vibro‐impact systems with two‐sided bumpers and gaps via shaking table tests

Andreaus

Angelis

2020

Struct Control Health Monit

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Summary During strong earthquakes, structural pounding may occur between structures (buildings, bridges, strategic facilities, critical equipment, etc.) and the surrounding moat wall because of the limited separation distance and the deformations of the isolator. An arrangement that favors the solution of this problem is the interposition of shock absorbers. Thus, the influence of geometrical and mechanical characteristics of isolation and mitigation devices on nonlinear, nonsmooth response of vibro‐impact systems is experimentally investigated in this paper on the basis of a laboratory campaign of experimental tests. Shaking table tests were carried out under a harmonic excitation in order to investigate two different configurations: the absence and the presence of bumpers. Three different values of the table acceleration peak were applied, four different amplitude values of the total gap between mass and bumpers were considered, and also four different types of bumpers were employed; moreover, two problems were addressed, namely, control of excessive displacements and control of excessive accelerations, and hence, two types of normalization were adopted in order to better interpret experimental results. Suitable choices of pairs of bumpers and gaps were suggested as a trade‐off between conflicting objectives. Furthermore, a numerical model was proposed, and its governing parameters identified in order to simulate the experimental results.

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Impact Stiffness of the Contact-Element Models for the Pounding Analysis of Highway Bridges: Experimental Evaluation

Cited by 20 publications

References 28 publications

Limitations in Simulation of Building Pounding in Earthquakes

Limitations in Simulation of Building Pounding in Earthquakes

A phenomenological contact‐element model considering slight non‐uniform contact for pounding analysis of highway bridges under seismic excitations

Influence of the characteristics of isolation and mitigation devices on the response of single‐degree‐of‐freedom vibro‐impact systems with two‐sided bumpers and gaps via shaking table tests

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