Pages
-
-
A Contribution to Dynamic Characterisation of Ordered Blocky Systems
-
Nina Čeh In this work, dynamic characterisation of blocky structures is investigated. First, rocking of blocks is investigated. By this model, the behaviour of historical monuments, dry-stones, blocks in nuclear power plants, and masonry structures after the failure of the mortar may be described. Non-linear equations of motion are derived and solved numerically. The exact time of impact is detected and the kinematic contact conditions after the impact are derived. Experimentally obtained energy loss...
-
-
A Model for Skid Resistance Prediction Based on Non-Standard Pavement Surface Texture Parameters
-
Ivana Pranjić The research presented in this thesis focused on the development of a prediction model for friction performance of asphalt pavements quantified as skid resistance, accounting for the nonstandard texture parameters. Pavement friction results from a complex interplay of many influencing parameters that can be grouped in four distinct groups: surface roughness properties, driving properties, vehicle tire properties and environmental influences. Surface roughness properties were selected as the...
-
-
Anchor Channels in Composite Concrete Slabs: Experimental and Numerical Investigation
-
Anton Bogdanić Anchor channels are a type of cast-in-place fastener that are well suited for supporting curtain walls and other applications in commercial construction because they provide flexibility when connecting structural or nonstructural elements. In modern high-rise buildings, composite slabs consisting of profiled steel decking with an in-situ cast concrete topping are commonly used. In some countries, it is also common to install the attachment point of the curtain wall in a recess of the...
-
-
Experimental and numerical analysis of delamination of layered glued plate structures with variable width
-
Ivan Hlača This thesis investigates the influence of specimen width on the mode-I fracture toughness of adhesively bonded plate-like specimens. First, the influence of different double cantilever beam (DCB) loading arrangements on the measured fracture toughness is investigated and an accurate method for determination of the traction-separation law of the interface using the direct approach with the digital image correlation (DIC) is presented. An additional set of DCB experiments with three different...
-
-
Identifikacija rizika od odrona u karbonatnim stijenskim masama na prometnicama u Republici Hrvatskoj
-
Dalibor Udovič Prometnice u Republici Hrvatskoj, a naročito autocesta A1, popularno zvana Dalmatina koja povezuje kontinentalnu i mediteransku Hrvatsku, a pri čijoj je izgradnji čovjek itekako intervenirao u prirodu, tj. stijensku masu (izgradnjom tunela, nadvožnjaka, podvožnjaka), osim udobne vožnje kriju i rizik od odrona stijenske mase, tj. hazarda.
Hazard od odrona stijenske mase može se izraziti kao vjerojatnost da će se odron stijenske mase određene magnitude pojaviti u određenom...
-
-
Importance of geotechnical cross-section unsaturated zone for landslide occurrence in flysch deposits
-
Josip Peranić Factors primary controlling rainfall-induced slope failures are both rainfall characteristics and soil properties. Rainfall causes a transient infiltration process through the unsaturated part of the slope which affects sloping material by increasing the moisture content and pore-water pressure, changing the effective stress and hydro-mechanical properties of the soil. To study the physical process of rainfall infiltration and how it affects the slope stability state, the dependency between...
-
-
Linked Interpolation and Strain Invariance in Finite-Element Modelling of Micropolar Continuum
-
Sara Grbčić At the core of this thesis is an alternative continuum theory called the micropolar
(Cosserat) continuum theory, developed in order to describe the phenomena which
the classical continuum theory is not able to describe. In this theory, in addition to
the displacement eld, there also exists an independent microrotation eld and, in
order to completely describe such a material, six material parameters are needed.
In the framework of the nite-element method, new nite elements based on the
...
-
-
Model for Erosion Intensity and Sediment Production Assessment Based on Erosion Potential Method Modification
-
Nevena Dragičević Erosion is a physical process, characterised by significant variations in its intensity and frequency all over the world. Erosion varies upon many elements, among which the most significant are climate parameters precipitation and temperature, as well as other parameters such as geology, topography, vegetation cover and anthropogenic influences. The topic of the dissertation is the analysis of erosion intensity and sediment production using Erosion Potential Method also known as Gavrilović...
-
-
Model integralnoga upravljanja kakvoćom voda ruralnoga prekograničnoga riječnog sliva
-
Gorana Ćosić-Flajsig Cilj ovog doktorskog rada je razviti inovativni model integralnoga upravljanja kakvoćom voda ruralnog prekograničnog riječnog sliva, unutar integralnog upravljanja vodama, radi postizanja okolišnih ciljeva riječnog sliva. Razvijeni model testiran je na ruralnom prekograničnom slivu rijeke Sutle, između Slovenije i Hrvatske. Temelji se na implementaciji DPSIR pristupa s ArcGIS-om radi izrade sveobuhvatne analize, te definiranja ključnih problema i izvora pritisaka u riječnom slivu....
-
-
Modeliranje betona armiranog čeličnim vlaknima
-
Željko Smolčić U disertaciji je prikazana eksperimentalna i 3D nelinearna numerička analiza betona armiranog čeličnim vlaknima s kukama. Eksperimentalna analiza provedena je savijanjem u tri točke zarezanih greda s različitim volumnim udjelima vlakana do Vf=1.5 %. Da bi se dobila efektivna veza posmično naprezanje-prokliznuće vlakna između vlakna i betona provedena je eksperimentalna analiza čupanja pojedinačnog vlakna iz betona. Numerička analiza betona armiranog vlaknima provedena je na mezo...
-
-
Multi-scale damage model of fiber-reinforced concrete with parameter identification
-
Tea Rukavina In this thesis, several approaches for modeling fiber-reinforced composites are proposed.
The material under consideration is fiber-reinforced concrete, which is composed
of a few constituents: concrete, short steel fibers, and the interface between
them. The behavior of concrete is described by a damage model with localized failure,
fibers are taken to be linear elastic, and the behavior of the interface is modeled with
a bond-slip pull-out law. A multi-scale approach for coupling...
-
-
Određivanje toplinskih parametara asfaltnih kolničkih konstrukcija inverznim postupkom
-
Marijana Cuculić Cilj ovog rada je razvoj numeričkog modela za izračun distribucije temperature u kolničkim konstrukcijama s obzirom na mjerene meteorološke podatke uz uvođenje nelinearnog koeficijenta prijenosa topline koji je funkcija temperaturne razlike kolnika i okolnog zraka. Prednost ovog modela je što isti izračunava toplinsko zračenje kolnika (toplinu vraćenu u okolni zrak) što je u važan dio procesa prijenosa topline kod „otvorenih“ prostora. Tijekom perioda 2011. – 2012. godine...
Pages
