Earthquake-induced pounding between equal height buildings with substantially different dynamic properties

Jankowski, Robert

doi:10.1016/j.engstruct.2008.03.006

Cited by 94 publications

(70 citation statements)

References 18 publications

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“…The pounding force response spectra for the El Centro earthquake confirm that the increase in mass value leads to considerable increase in peak impact force. Jankowski [16] performed non-linear analysis for earthquake-induced pounding of two equal height structures with substantially different dynamic properties. This response analysis show that collisions have a significant influence on the behaviour of the lighter and more flexible building especially in longitudinal direction causing generous amplification of the response and lead to extensive permanent deformation due to yielding [17][18][19][20].…”

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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“…It is, namely, the generalized Hertz model, and this model can take into account the energy loss during the contact-collision between two objects. It can better simulate the entire contact-collision dynamic process and has been widely used [8]. The model is the Hertz model in parallel with a nonlinear spring damper, to describe the energy loss during the contact-collision between two objects.…”

Section: Collision Modelmentioning

confidence: 99%

R&D on a Nonlinear Dynamics Analysis Code for the Drop Time of the Control Rod

Wang

Xie³

et al. 2017

Science and Technology of Nuclear Installations

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Whether the control rod can drop down in time is one of the important guarantees for the safe operation of the nuclear power plant. The drop-down process of the control rod is very complicated. For a long time, the researchers have done a lot of work on that, but it is hard to consider all the nonlinear factors. This paper considers the main factors together. Based on the theoretical analysis, we developed the nonlinear dynamics response analysis software for the nuclear power plant, which can be used to calculate the rod's drop-down time. Compared with the results of the experiments, the software we developed proves to be applicable and reliable.

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“…As an example, for Nstorey Building A, the total number of degrees of freedom, 3N+5 are obtained as 3N equations of dynamic equilibrium of each floor of the superstructure for the translation in the x and y directions and rotation about the centre of mass and 5 degrees of freedom due to interaction at the foundation. The 3N equations of dynamic equilibrium of each floor of Building A may be expressed as in the x direction with the help of the non-linear viscoelastic model [11]. …”

Section: Theoretical Background Of System Modelmentioning

confidence: 99%

Seismic history analysis of asymmetrical adjacent buildings with soil-structure interaction consideration

Uz¹,

Hadi²

2011

WIT Transactions on the Built Environment

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The seismic response history analysis of multi-storey asymmetric adjacent buildings with soil-structure interaction (SSI) during impact is investigated in this study. The coupled multi-degree of freedom modal differential equations of motion for the two way asymmetric shear buildings are derived and solved using a step by step solution by the fourth-order Runge-Kutta method with impact and without impact. The SSI forces are modelled in the form of the frequencyindependent soil springs and dashpots. A numerical example of two-way asymmetric four-storey adjacent buildings under the variation of the important SSI system parameters such as the large and small SSI effects is investigated under the excitation of the 1940 El Centro Earthquake. This study shows that the lateral torsion response of both buildings is affected when impact takes place with the adjacent buildings. The first three modal response histories of each building are significantly reduced due to the effect of the small SSI. Further, it is also observed that the roof twist of the lighter buildings is decreased for the large SSI effect compared to the small SSI effect. Finally, in increased eccentricities, the impact response of buildings is significantly severe.

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Earthquake-induced pounding between equal height buildings with substantially different dynamic properties

Cited by 94 publications

References 18 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

R&D on a Nonlinear Dynamics Analysis Code for the Drop Time of the Control Rod

Seismic history analysis of asymmetrical adjacent buildings with soil-structure interaction consideration

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