The design of passive houses with thermal isolation (TI) under foundations in earthquake prone areas should pay additional attention to: a) control of maximum shear and axial stresses/strains in TI layer and b) control of eventual increase of displacements and earthquake induced forces to the superstructure. The paper deals with the seismic response of such passive buildings with the TI layer made of extruded polystyrene (XPS). The material structural characteristics of XPS were experimentally determined utilizing the axial compressive and shear tests. The parametric study has shown that in general the seismic safety of low-rise passive houses is not of critical concern. For higher (or slenderer) buildings however, the negative effects of TI layer under foundations are more important. The negative effects are larger for stiffer buildings, positioned on more flexible insulation layers, and founded in a better soil conditions.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 2842244We analysed the seismic response of the houses built on the XPS thermal insulation. On the basis of experiments, we determined the shear modulus and shear friction coefficients of the extruded polystyrene in contact with some other materials. We made recommendations for foundations for single-family houses built on thermal insulation.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 2557828Recently, the term passive house became more and more popular in Slovenia. This is not a new building technology, the knowledge is for long known and consistent considered in the concept of passive house standard. The passive house is a great energy potential. Actually, it is currently an optimal energy-efficient building. Because of quality thermal envelope, adequate air-tightness and a built-in controlled mechanical ventilation system with the heat recovering, its annual heating demand amounts to a maximum of 15 kWh/(m2a), which can be met by so-called warm air heating. A passive house has numerous advantages over the structures in which we live today. Apart from low energy consumption (and, consequently, reduced dependence on fossil fuels), and low maintenance costs, its advantage lies primarily in permanent fresh, warm and clean air. Thanks to relatively large glazed surfaces, the passive house also offers great comfort of illumination. The article will argue for the advantages of the passive house.
B.04 Guest lecture
COBISS.SI-ID: 2539652The article presents the findings about the core of the creative practice based research laboratory is the design process. The essence of the research in this laboratory is focused on the positivistic evaluation of the liberal research approach contributions, that offers the potentials of the differentiation between research oriented and practice oriented design and their integration into venturous architectural practices.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 2766468The thesis deals with seismic base isolation as a restoration technique for increasing the seismic resistance of architectural heritage. Even though the idea of using various kinds of isolation devices for earthquake mitigation of buildings has been conceived centuries ago, its actual implementation (mainly to new structures) has a history of only about 30 years. The basic principle of using seismic isolation is to extend the fundamental period of vibration of the isolated structure outside the resonance frequencies of seismic waves or to increase the total damping of the system. In both cases a reduction of the induced seismic forces is obtained, thus lessening its impact on the structure. Typical base isolation devices represent special bearings that are usually installed at the base of the structure. Due to the reduction in induced seismic forces, the need for other, more invasive techniques can in many cases be abolished or greatly reduced. In this sense base isolation systems present a unique solution, since they can increase the seismic resistance of existing structures, without rigorous interventions in the structure itself. The basic hypothesis that has been examined in the thesis states that seismic isolation presents an efficient technique for the seismic strengthening architectural heritage as it follows the so called minimum intervention concept, increasing not only the structure’s seismic resistance but also minimizing the negative effects on its heritage values. In order to justify the need for seismic interventions, the first part of the thesis analyses the seismic vulnerability of the most common structural typologies of heritage architecture in Slovenia. The main part of the thesis includes the comparison between the principal architectural conservation guidelines and guidelines of structural restoration. To overcome the discrepancies between the various aspects of the two types of guidelines, a new concept in heritage restoration is presented. The new concept has to be adopted for the successful implementation of seismic isolation for such structures. The technical part of the thesis deals with seismic base isolation in greater detail, especially with its application to existing buildings. A new method for selecting appropriate bearings for the installation in structures of architectural heritage has been proposed.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 2879620