Non-linear viscoelastic modelling of earthquake-induced structural pounding

Jankowski, Robert

doi:10.1002/eqe.434

Cited by 298 publications

(311 citation statements)

References 26 publications

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“…Kasai and Maison [12] investigated the building pounding damage during the 1989 Loma Prieta earthquake. Jankowski [13] presented nonlinear viscoelastic modelling of earthquake-induced structural pounding. Jankowski [14] reported that the increase in structural damping of adjacent structures simultaneously leads to the extension of the region in the spectrum where the impact force is equal to zero.…”

Section: Introductionmentioning

confidence: 99%

Non-linear FEM analysis of seismic induced pounding between neighbouring multi-storey structures

Jameel

Islam

Hussain

et al. 2013

Lat. Am. j. solids struct.

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Pounding of neighbouring construction of structures due to seismic excitation increases the damage of structural components or even causes collapse of structures. Among the possible building damages, earthquake induced pounding has been commonly observed in several earthquakes. Therefore it is imperative to consider pounding effect for structures. This study aims to understand the response behaviour of adjacent buildings with dissimilar heights under earthquake induced pounding. Effects of different separation distances between structures are also investigated. Nonlinear finite element analysis in time domain has been carried out for pounding of neighbouring structures having varying heights. To show the importance of avoiding pounding in structures the results obtained were compared with model having no pounding phenomena. The results were obtained in the form of storey shear, pounding force, storey drift, point displacement and acceleration. The acceleration at pounding level significantly increases during collision of building. The generated extra pounding force may cause severe damage to structural members of structures. Pounding produces shear at various story levels, which are greater than those obtained from no pounding case. Building with more height suffers greater damage than shorter building when pounding occurs. Increasing gap distance tends to reduce story shear in consistent manner. The results also show that the conventional modelling of building considering only beams and columns underestimates pounding effects. More realistic modelling such as beams, columns and slabs shall be adopted to accurately understand the pounding phenomenon.

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Section: Introductionmentioning

confidence: 99%

Non-linear FEM analysis of seismic induced pounding between neighbouring multi-storey structures

Jameel

Islam

Hussain

et al. 2013

Lat. Am. j. solids struct.

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“…In addition, with these models, a negative reaction force takes place just before the end of the contact. More recently, Hertz models have been used [1,12]. They provide a better fit with experimental results, although there are not many of them.…”

Section: Literature Reviewmentioning

confidence: 99%

“…They have been chosen instead of the Hertz models because parameter selection as well as numerical solution is easier. Also, visco-elastic elements make it easy to fix parameters so as to fit experimental reaction forces [1]. Parameters M,K S ,C S and Kb are not difficult to obtain.…”

Section: The Model and Its Integrationmentioning

confidence: 99%

“…Extensive pounding related damage have been reported after many events (i.e. Mexico City 1985, Loma Prieta 1989, or Kobe 1995) [1], evaluation of response in terms of EDPs, conditioned on IM. In the considered pounding problem, the reaction force will be the EDP of interest.…”

Section: Introductionmentioning

confidence: 99%

“…X(dv)= J J J G(du|dm)dG(dm|edp)dG(edp|im)|dA(im)| (1) where k(x) denotes the mean rate of x<X events per year and G(x\y) denotes the conditional complementary cumulative function for random variable X given Y = y. This study will be bounded to the first step of the procedure.…”

Section: Introductionmentioning

confidence: 99%

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Pounding force assessment in performance‐based design of bridges

Vega¹,

Rey

Alarcón

2009

Earthq Engng Struct Dyn

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SUMMARYBridges with deck supported on either sliding or elastomeric bearings are very common in mid-seismicity regions. Their main seismic vulnerabilities are related to the pounding of the deck against abutments or between the different deck elements. A simplified model of the longitudinal behavior of those bridges will allow to characterize the reaction forces developed during pounding using the Pacific Earthquake Engineering Research Center framework formula. In order to ensure the general applicability of the results obtained, a large number of system parameter combinations will be considered. The heart of the formula is the identification of suitable intermediate variables. First, the pseudo acceleration spectral value for the fundamental period of the system (Sa(7i)) will be used as an intensity measure (IM). This IM will result in a very large non-explained variability of the engineering demand parameter. A portion of this variability will be proved to be related to the relative content of high-frequency energy in the input motion. Two vector-valued IMs including a second parameter taking this energy content into account will then be considered. For both of them, a suitable form for the conditional intensity dependence of the response will be obtained. The question of which one to choose will also be analyzed. Finally, additional issues related to the IM will be studied: its applicability to pulse-type records, the validity of scaling records and the sufficiency of the IM.

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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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Non-linear viscoelastic modelling of earthquake-induced structural pounding

Cited by 298 publications

References 26 publications

Non-linear FEM analysis of seismic induced pounding between neighbouring multi-storey structures

Non-linear FEM analysis of seismic induced pounding between neighbouring multi-storey structures

Pounding force assessment in performance‐based design of bridges

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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