The seismic response of low-energy buildings founded on a thermal insulation layer – A parametric study

Azinović, Boris; Koren, David; Kilar, Vojko

doi:10.1016/j.engstruct.2014.10.015

Cited by 21 publications

(17 citation statements)

References 41 publications

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“…(2)). Such an increase could lead to damage to the superstructure or its content, which should not be ignored [5,[9][10][11]. However, if the fundamental period of the superstructure is already on the plateau of constant accelerations, the insertion of TI under the foundation slab might prolong the structural period into the descending branch, so that the seismic forces acting on the structure might be reduced.…”

Section: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

“…The results of the preliminary studies [5] and extensive parametric studies [11] have shown that the designers of multi-storey buildings founded on the TI layer under the ground floor slab should pay additional attention to the seismic behaviour of such structures. In the case of stronger seismic excitation the following limit states (or their combination) could be expected: (i) formation of a plastic mechanism in the superstructure (i.e.…”

Section: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

“…the weight of the building was too large), and (iv) the allowable shear strength of the TI, or the allowable friction capacity between the TI layers, is exceeded. Both studies [5,11] that the control of maximum shear stresses and maximum horizontal displacements at the TI layer is much less critical than the control of behaviour of TI in compression which becomes of critical concern when severe uplifting takes place. It was shown that during moderate seismic excitation the edge compressive stresses in the TI layer beneath the foundation slab could exceed the TI nominal compressive strengths already in the cases of heavy concrete buildings with more than two or three storeys [5].…”

Section: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

“…It was shown that during moderate seismic excitation the edge compressive stresses in the TI layer beneath the foundation slab could exceed the TI nominal compressive strengths already in the cases of heavy concrete buildings with more than two or three storeys [5]. The allowable number of storeys depends on numerous parameters such as seismic intensity, the floor plan aspect ratio (slenderness) of the superstructure, its stiffness, strength and cyclic behaviour, its seismic weight, quality and thickness of the TI [11]. In authors' related study [10] also the soil type and the stiffness of the ground floor slab have been investigated and recognized to be essential parameters in governing the seismic response of the buildings founded on the TI layer.…”

Section: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

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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: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

Section: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

Section: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

Section: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

See 2 more Smart Citations

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

Azinović

Koren²,

Kilar³

2014

TOCIEJ

Self Cite

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“…For this reason, effective retrofitting concepts, which should include newly developed or modified and upgraded technologies, as well as new design concepts, need to be developed and their validity confirmed [4][5][6]. It should be mentioned that these technologies should also be considered from the seismic engineering point of view, since certain elements could influence the dynamic stability of a structure [7,8]. The specific properties and energy efficiency of such new technologies, as well as their design concepts, can be evaluated by the performance of different kinds of tests, especially when such measurements are combined with real case demonstrations [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Various Retrofitting Concepts of Building Envelope for Offices Equipped with Large Radiant Ceiling Panels by Dynamic Simulations

et al. 2015

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Abstract:In order to achieve significant savings in energy and an improved level of thermal comfort in retrofitted existing buildings, specific retrofitting concepts that combine new technologies and design need to be developed and implemented. Large radiant surfaces systems are now among the most promising future technologies to be used both in retrofitted and in new low-energy buildings. These kinds of systems have been the topic of several studies dealing with thermal comfort and energy utilization, but some specific issues concerning their possible use in various concepts for retrofitting are still poorly understood. In the present paper, some results of dynamic simulations, with the transient system simulation tool (TRNSYS) model, of the retrofitted offices equipped with radiant ceiling panels are presented and thoroughly analysed. Based on a precise comparison of the results of these simulations with actual measurements in the offices, certain input data for the model were added, so that the model was consequently validated. The model was then applied to the evaluation of various concepts of building envelopes for office retrofitting. By means of dynamic simulations of indoor environment it was possible to determine the benefits and OPEN ACCESSSustainability 2015, 7 13170 limitations of individual retrofitting concepts. Some specific parameters, which are relevant to these concepts, were also identified.

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Structural Details in Energy-Efficient Buildings

Azinović

Kilar

Koren

2022

Springer Tracts in Civil Engineering

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In order to meet the EU Green Deal requirements, the thermal envelope of a modern energy-efficient building must be “wrapped” all around the building with no thermal bridges. This chapter describes the most important structural details and their effects on energy consumption and seismic resistance of the building as a whole. Those details where the energy efficiency might be inversely proportional to its earthquake resistance, are further explored and analysed.

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The seismic response of low-energy buildings founded on a thermal insulation layer – A parametric study

Cited by 21 publications

References 41 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

Evaluation of Various Retrofitting Concepts of Building Envelope for Offices Equipped with Large Radiant Ceiling Panels by Dynamic Simulations

Structural Details in Energy-Efficient Buildings

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