A5066903975- Seismic Performance and Analysis
- Structural Health Monitoring Techniques
- Masonry and Concrete Structural Analysis
- Structural Response to Dynamic Loads
- Structural Behavior of Reinforced Concrete
- Probabilistic and Robust Engineering Design
- Wind and Air Flow Studies
- Fluid Dynamics Simulations and Interactions
- Infrastructure Resilience and Vulnerability Analysis
- earthquake and tectonic studies
- Nuclear and radioactivity studies
- Concrete Corrosion and Durability
- BIM and Construction Integration
- Structural Engineering and Vibration Analysis
- Civil and Structural Engineering Research
- Structural Load-Bearing Analysis
- Flood Risk Assessment and Management
- Geotechnical Engineering and Underground Structures
- Seismic Waves and Analysis
- Tropical and Extratropical Cyclones Research
- Seismic and Structural Analysis of Tall Buildings
- Graphite, nuclear technology, radiation studies
- Disaster Management and Resilience
- Plant Pathogenic Bacteria Studies
- Risk and Safety Analysis
University of Ljubljana
2016-2025
Geodetic Institute of Slovenia
2015-2025
Arak University
2010
Abstract Incremental dynamic analysis (IDA) has been extended by introducing a set of structural models in addition to the ground motion records which is employed IDA order capture record‐to‐record variability. The reflects epistemic (modeling) uncertainties, and determined utilizing latin hypercube sampling (LHS) method. effects both aleatory uncertainty on seismic response parameters are therefore considered analysis. proposed method applied an example four‐storey‐reinforced concrete...
The lack of empirical data regarding earthquake damage or losses has propelled the development dozens analytical methodologies for derivation fragility and vulnerability functions. Each method will naturally have its strengths weaknesses, which consequently affect associated risk estimates. With purpose sharing knowledge on modeling, identifying shortcomings in existing methods, recommending improvements to current practice, a group experts met Pavia (Italy) April 2017. Critical topics...
Abstract This paper provides an overview and introduction to the development of non-ergodic ground-motion models, GMMs. It is intended for a reader who familiar with standard approach developing ergodic starts brief summary GMMs then describes different methods that are used in emphasis on Gaussian process (GP) regression, as currently method preferred by most researchers contributing this special issue. Non-ergodic modeling requires definition locations source site characterizing systematic...
Effective disaster risk management would require the analysis and comparison of relevant risks potentially affecting a territory, also considering possible interactions among them (e.g., cascading effects). Modelling such may be complex, increasing challenge to perform exhaustive multi-risk assessment. Independent analyses are often performed for multiple in given area. However, as usually different risks, methodologies impact metrics adopted, results single-risk not comparable. The problem...
A large number of multi-storey reinforced concrete frame buildings with masonry infill walls, which were uniformly distributed over the height building, collapsed in 1999 Kocaeli (Turkey) earthquake, due to complete failure first storey or bottom two stories. In paper it is demonstrated that a soft mechanism formed such structural systems if intensity ground motion above certain level. It likely collapse will occur global ductilities bare frames, as well elements, are low, and walls...
A simplified method for seismic risk assessment with consideration of aleatory and epistemic uncertainties is proposed based on the widely used closed-form solution estimating mean annual frequency exceeding a limit state (LS). The determination fragility parameters involves non-linear static analysis set structural models, which defined by utilising Latin hypercube sampling, dynamic analyses equivalent single degree-of-freedom models. models captures uncertainties, whereas uncertainty due...
SUMMARY In the presented practice‐oriented probabilistic approach for seismic performance assessment of building structures, SAC‐FEMA method, which is a part broader PEER framework and permits probability in closed form, combined with pushover‐based N2 method. The most demanding framework, that incremental dynamic analysis, replaced by much simpler requires considerably less input data computational time, but can, nevertheless, often provide: acceptable estimates mean values structural...
Incremental dynamic analysis (IDA) is a widely used method for assessing structural performance under earthquake excitations. It enables direct evaluation of the record-to-record variability in response through set ground-motion records. If number records large then, becomes computationally demanding. To facilitate its practical application, precedence list has been introduced, aiming at selecting most representative IDA analysis. In progressive analysis, curves are computed progressively,...
Abstract The objective of the study presented in this paper is to investigate effects masonry infills on shear demand and failure columns for case when reinforced concrete frames with such are modeled by means simplified nonlinear models that not capable direct simulation these effects. It shown an approximate can be achieved through iterative procedure involves pushover analysis, post‐processing analysis results using limit‐state checks components, model adaptation if detected. fragility...
Summary A risk‐targeted design spectral acceleration and the corresponding seismic action for force‐based of structures is introduced by means two formulations. The first one called direct formulation utilizes hazard function at site structure. Because defined in codes often associated with a designated return period, an indirect also introduced. It incorporates safety factor that can be used to define reduction factor. shown proposed formulations give analogical results provide insight into...
Abstract In two companion papers a simplified non‐linear analysis procedure for infilled reinforced concrete frames is introduced. this paper simple relation between strength reduction factor, ductility and period ( R–µ–T relation) presented. It intended to be used the determination of inelastic displacement ratios spectra in conjunction with idealized elastic spectra. The was developed from results an extensive parametric study employing SDOF mathematical model composed structural elements...
Abstract In this paper, a technique is presented which employs the results of pseudo‐dynamic tests for development mathematical model. This technique, described by means modelling three‐storey reinforced concrete frame building with infill in bottom two storeys, was tested at ELSA Ispra, proved to be effective and lead fairly accurate structural The analyses suggest that global non‐linear seismic response frames masonry can adequately simulated relatively simple model, combines beam elements...
Abstract A relatively simple approach for the probabilistic seismic performance assessment of plan‐asymmetric structures has been proposed. It is based on PEER framework, in which most demanding part, i.e. incremental dynamic analysis (IDA), replaced by much simpler Incremental N2 (IN2) analysis. Predetermined default values dispersion measures are needed practical implementation this approach, can be used buildings requiring a 3D structural model. In paper, simplified summarized. Its...
Abstract A methodology has been proposed which can be used to reduce the number of ground motion records needed for reliable prediction median seismic response structures by means incremental dynamic analysis (IDA). This is presently limited predictions IDA curve only. The reduction in predict achieved introducing a precedence list records. determination such an optimization problem, solved paper (1) genetic algorithm and (2) simple procedure. simple, computationally non‐demanding structural...
SUMMARY An envelope‐based pushover analysis procedure is presented that assumes the seismic demand for each response parameter controlled by a predominant system failure mode may vary according to ground motion. To be able simulate most important modes, several analyses need performed, as in modal procedure, whereas total determined enveloping results associated with analysis. The common resulting from ‘first‐mode’ obtained history equivalent ‘modal‐based’ SDOF model, other modes based on...
SUMMARY An approximate seismic risk assessment procedure for building structures, which involves pushover analysis that is performed utilizing a deterministic structural model and uncertainty at the level of equivalent SDOF model, introduced. Such an approach computationally significantly less demanding in comparison with procedures based on entire structure, but still allows explicit consideration effect record‐to‐record variability modelling uncertainties. A new feature proposed...
Summary Decision models for the verification of seismic collapse safety buildings are introduced. The derivations based on concept acceptable (target) annual probability collapse, whereas decision making involves comparisons between demand and capacity, which is familiar to engineering practitioners. Seismic demand, corresponds design action associated with a selected return period, can be expressed either in terms an intensity measure (IM) or parameter (EDP). other hand, defined by dividing...
Unanchored steel storage tanks, commonly used in industrial facilities, can suffer damage during major earthquakes due to various failures. To better understand the seismic behaviour of such structures, a pushover-based performance assessment four tanks with varying slenderness ratios was performed. The emphasis placed on understanding relationship between engineering demand parameters, tank ratio, and wall geometrical imperfections, which were, however, imposed only lower course around...
Summary Risk‐based seismic design, as introduced in this paper, involves the use of different types analysis order to satisfy a risk‐based performance objective with reasonable utilization rate and sufficient reliability. Differentiation reliability design can be achieved by defining algorithms depending on importance structure. In general, proposed is iterative, where adjustment structure during iterations most challenging task. Rather than using automated algorithms, an attempt has been...