Simulation of the response of base-isolated buildings under earthquake excitations considering soil flexibility

Mahmoud, Sayed; Austrell, Per Erik; Jankowski, Robert

doi:10.1007/s11803-012-0127-z

Cited by 42 publications

(16 citation statements)

References 48 publications

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“…The behaviour of buildings founded on TI, when subjected to earthquake ground motions, is to a certain extent similar to the problems of nonlinear dynamic SSI and therefore a similar level of accuracy is presumed for the results obtained in this paper. The findings of previous researches [23][24][25][26][27][28][29][30][31][32][33][34][35][36] performed on simplified building models indicate that the results between the MDOF and equivalent SDOF models are in good agreement regarding buildings' top displacement response, whereas the simplified methods could lead to conservative estimates of the ductility demands for high rise structures. These facts are taken into consideration in this paper, where the results are mainly focused on low to mid-rise structures and on the distinction between the response of the FB and BI models.…”

Section: Numerical Modellingmentioning

confidence: 91%

“…Only a part of these results pointing out the performance of light-weight energy efficient buildings were presented in this paper. Similar simplified models for the superstructure have already been used for extensive parametric studies of fixed based structures [23][24][25][26], seismic isolation systems [27][28][29], soil structure interaction (SSI) phenomena [30][31][32][33][34] or to determine the probabilistic characteristics of seismic ductility demand [35,36]. The behaviour of buildings founded on TI, when subjected to earthquake ground motions, is to a certain extent similar to the problems of nonlinear dynamic SSI and therefore a similar level of accuracy is presumed for the results obtained in this paper.…”

Section: Numerical Modellingmentioning

confidence: 99%

See 1 more Smart Citation

Principles of Energy Efficient Construction and their Influence on the Seismic Resistance of Light-weight Buildings

Azinović

Koren²,

Kilar³

2014

TOCIEJ

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Abstract:Recently, an increasing trend of passive and low-energy buildings transferring from non earthquake-prone to earthquake-prone regions has thrown out the question about the seismic safety of such buildings. The paper describes the most commonly used details of energy efficient construction, which could be critical from the point of view of earthquake resistance. The paper focuses on the prevention of ground floor slab thermal bridge and presents a case study on the seismic response of multi-storey wooden buildings founded on the RC foundation slab lying on a thermal insulation (TI) layer made of extruded polystyrene (XPS). The structural response is investigated with reference to the following performance parameters: the building's lateral top displacement, the ductility demand of the superstructure, the friction coefficient demand, the maximum compressive stress in the TI layer and the percentage of the uplifted foundation. A comparison between the response of models founded on a fixed base and models founded on a layer of TI with the same wooden crosslam structure differing in the number of storeys, strength capacity and subjected to earthquakes with different levels of seismic intensity is done. Regarding the building's top displacements, the maximum compressive deformation in the TI layer, and the percentage of the uplifted foundation, the results have shown that the potentially negative influences of inserting the TI under the foundation slab could be expected only for high-rise buildings subjected to severe earthquakes. Oppositely, for the superstructure's ductility demand and for the friction coefficient demand it was demonstrated that the largest demands could be expected in the case of low-rise buildings. The control of friction coefficient demand, which was recognized as critical parameter for analyzed wooden buildings, has shown that the capacity value could be exceeded yet in the case of moderate earthquake occurrence.

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Section: Numerical Modellingmentioning

confidence: 91%

Section: Numerical Modellingmentioning

confidence: 99%

Principles of Energy Efficient Construction and their Influence on the Seismic Resistance of Light-weight Buildings

Azinović

Koren²,

Kilar³

2014

TOCIEJ

View full text Add to dashboard Cite

show abstract

“…The seismic isolation technique was used in aseismic design of bridges by masses of scientists, in order to reduce the damage of bridge caused by earthquakes [3].Seismic isolation bearing have much more mature and is widely used in engineering as one of the seismic isolation measures [4].…”

Section: Introductionmentioning

confidence: 99%

Optimal allocation and seismic isolation effect analysis of high-damping rubber bearing for Beam Bridge

Wang¹,

Wang²

2017

Proceedings of the 2017 2nd International Conference on Machinery, Electronics and Control Simulation (MECS 2017)

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Abstract:As the seismic isolation technique was widely use in aseismic design of bridges, the high-damping rubber bearing were applied to many bridges in order to reduce the seismic response of bridge. Compare the seismic isolation effect of different model high-damping rubber bearing and laminated rubber bearing, the optimal proposal of bearings has been suggested. Sliding bearings used on side piers caused the earthquake distributed unevenly among piers, as changed to high-damping rubber bearing, the seismic response of bridge have effectively controlled into allowable range.

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“…Research found that high-damping rubber bearings have good seismic mitigation and isolation performance [4]. As the bearing to be use the seismic force of bridge can be reduce, the bearing can also confine the displacement of the whole structure and effectively control the earthquake response of the bridge [5].…”

Section: Introductionmentioning

confidence: 99%

Stiffness optimized research of high damping rubber bearing for beam bridges

Wang¹

2017

Proceedings of the 2017 2nd International Conference on Machinery, Electronics and Control Simulation (MECS 2017)

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Abstract:Damping and isolation effect of high-damping rubber bearing with different combination have been studied for a continuous girder bridge. Dynamic time-history analysis has been taken by earthquake waves with exceeding probability to be 40 percent, 10 percent and 2 percent. The influence for seismic responses of bridge caused by sliding bearing set on transitional pier has been discuss. Research results show that the sliding bearings set on transitional piers have weakened the load sharing percent of transitional piers. The displacements of sliding bearings are larger than the bearings set on continuous piers, so that the load distribution of piers is nonuniform. The load sharing is much more reasonable when high-damping rubber bearings were set on all the piers, and the dynamical response of bridge was greatly decreases.

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Simulation of the response of base-isolated buildings under earthquake excitations considering soil flexibility

Cited by 42 publications

References 48 publications

Principles of Energy Efficient Construction and their Influence on the Seismic Resistance of Light-weight Buildings

Principles of Energy Efficient Construction and their Influence on the Seismic Resistance of Light-weight Buildings

Optimal allocation and seismic isolation effect analysis of high-damping rubber bearing for Beam Bridge

Stiffness optimized research of high damping rubber bearing for beam bridges

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