Mid-Column Pounding of Multi-Story Reinforced Concrete Buildings considering Soil Effects

Shakya, Kabir; Wijeyewickrema, Anil

doi:10.1260/136943309787522687

Cited by 42 publications

(25 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Typically, a contact mechanism is activated when the condition u 1 (t)−u 2 (t) u gap is met. The modelling of the contact itself has been subject to a multitude of approaches [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…The magnitude of the tensile loading 643 depends on both the level of element damping and the relative velocity of the collision. Variations on the Kelvin Voight element, such as the no tension variation by Shakya et al [14], address this inaccuracy ( Figure 2). However, these variations invalidate the assumptions made when relating the coefficient of restitution to the collision element damping ratio.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An investigation of the effects of mass distribution on pounding structures

Cole

Dhakal

Carr

et al. 2010

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

The effects of diaphragm mass distribution are investigated for building pounding. Elastic diaphragm-todiaphragm collisions are explained by considering the total momentum over the length of each diaphragm at three critical instants during collision. Expressions for collision force and collision duration are produced, providing additional information about the collision process. Equations for the post collision velocity of each diaphragm are produced and are found to appreciably differ from conventional impact-momentum equations under certain conditions. The change in post collision velocity is found to be dependent on the ratio of the axial periods of free vibration of the two diaphragms and the ratio of their masses. An equivalent lumped mass model is proposed and assessed against simplified distributed mass models with numerical modelling of two two-storey buildings. Finally, a new parameter is introduced to represent the plasticity of an inelastic collision between the two distributed masses. This paper highlights the significant influence that diaphragm mass distribution may have on the analysis of pounding structures.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An investigation of the effects of mass distribution on pounding structures

Cole

Dhakal

Carr

et al. 2010

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…A solution scheme was proposed and the correlation between numerical and analytical results was found to be satisfactory. Shakya and Wijeyewickrema [31] presented the analysis of seismic pounding of reinforced concrete buildings of various heights, including the aspects of soil-structure interaction. Two configurations of buildings were considered and pounding between structures was modelled by impact Kelvin-Voigt elements.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

View full text Add to dashboard Cite

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.

show abstract

“…Numerous literatures have focused on analysing structures of earthquake-induced pounding. Some research [7][8][9][10][11] involves poundings between adjacent buildings. For example, Jankowski [7] analysed the parametric pounding of two buildings with the same number of stories.…”

Section: Introductionmentioning

confidence: 99%

An Updated Analytical Structural Pounding Force Model Based on Viscoelasticity of Materials

Xue

Zhang

et al. 2016

Shock and Vibration

View full text Add to dashboard Cite

Based on the summary of existing pounding force analytical models, an updated pounding force analysis method is proposed by introducing viscoelastic constitutive model and contact mechanics method. Traditional Kelvin viscoelastic pounding force model can be expanded to 3-parameter linear viscoelastic model by separating classic pounding model parameters into geometry parameters and viscoelastic material parameters. Two existing pounding examples, the poundings of steel-to-steel and concrete-toconcrete, are recalculated by utilizing the proposed method. Afterwards, the calculation results are compared with other pounding force models. The results show certain accuracy in proposed model. The relative normalized errors of steel-to-steel and concreteto-concrete experiments are 19.8% and 12.5%, respectively. Furthermore, a steel-to-polymer pounding example is calculated, and the application of the proposed method in vibration control analysis for pounding tuned mass damper (TMD) is simulated consequently. However, due to insufficient experiment details, the proposed model can only give a rough trend for both single pounding process and vibration control process. Regardless of the cheerful prospect, the study in this paper is only the first step of pounding force calculation. It still needs a more careful assessment of the model performance, especially in the presence of inelastic response.

show abstract

Mid-Column Pounding of Multi-Story Reinforced Concrete Buildings considering Soil Effects

Cited by 42 publications

References 15 publications

An investigation of the effects of mass distribution on pounding structures

An investigation of the effects of mass distribution on pounding structures

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

An Updated Analytical Structural Pounding Force Model Based on Viscoelasticity of Materials

Contact Info

Product

Resources

About