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51.
Geodetski instrumenti skozi zgodovino in uporaba 3D skenerja v gradbeništvu in drugih posegih v prostoru
Zinaida Mahmutagić, 2016, diploma project paper

Abstract: V diplomski nalogi je opisan razvoj geodetske opreme, nivelirjev, teodolitov in tahimetrov, skozi zgodovino. Obravnavana je določena oprema, katero lahko najdemo v znanih podjetjih, razširjenih na trgu v Sloveniji, kot so Topcon, Sokkia in Geoservis d.o.o, ki podpira blagovo znamo Leica Geoservis ter njihova primerjava. Poleg tega je predstavljena ena od najnovejših tehnologij v Sloveniji, tehnologija 3D skenerja, njegova zgradba, uporabnost in delovanje.
Keywords: 3D skener, nivelir, teodolit, tahimeter
Published: 15.09.2016; Views: 583; Downloads: 77
.pdf Full text (2,07 MB)

52.
Deformation analysis of bridges in exceptional transport in Slovenia
Rok Kamnik, Boštjan Kovačič, Andrej Štrukelj, 2010, short scientific article

Abstract: In August 1999 an exceptional transportation of two steamers of 666 tonnes was performed from the Port of Koper to the Nuclear power plant in Krško. The transport covered a distance of about 200km and represented one of the largest exceptional transports in Slovenia ever. Finding the best route represented one of the major issues, because the steamers had to cross more than 50 problematic sections and bridges, most of which have not been designed for such heavy loads. It was necessary to load-test almost all bridges on the route to determine whether those bridges need any extra supports or not. Consequently, a logistic operator has an important and indispensable role and becomes a co-modeller of logistic service. A deformation analysis or a polynomial interpolation of vertical displacements could also be used. Therefore, a laboratory load test of a concrete plate was made. The concrete plate was loaded with hydraulic cylinder PZ 100 with extensiometer up to 21kN. Every increase of load by 3kN was measured with Nikon Ser 800 total station.
Keywords: deformation analysis, exceptional transport, bridges, Slovenia
Published: 01.06.2017; Views: 403; Downloads: 44
.pdf Full text (925,47 KB)
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53.
The different methods of displacement monitoring at loading tests of bridges or different structures
Boštjan Kovačič, Rok Kamnik, Andrii Bieliatynskyi, 2016, published scientific conference contribution

Abstract: By measuring the displacements and deformations at different structures we deal in the Faculty of Civil Engineering, transportation Engineering and Architecture in University of Maribor for about 20 years. At that time we measured over 600 structures. Most loading tests of bridges and Viaducts were made. The measurements of movements needed to be as precise and accurate as possible. To do that laboratory test of instruments were made to see which instrument gives us reliable results. Displacements can be determined by geodetic and physical methods, depends of the construction. The use of geodetic methods are still preferable. In the paper the measurements with the total station, the level and rotation level, photogrammetry and solutions on the field by physical methods with inductive transducers are presented. We need to measure displacements as quick as possible but efficiently because we can not repeat the measurements under the same conditions. Also the surveying on the bridge and in the lab with the comparison of methods is presented under the different hard terrain conditions - water beneath the construction, big height of the structure, unapproachability, large span structures.
Keywords: bridges, measurements, strain gauge, load test, deformation, strain, signal processing
Published: 02.08.2017; Views: 406; Downloads: 178
.pdf Full text (3,15 MB)
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54.
GNSS monitoring of geologically demanding areas
Boštjan Kovačič, Boško Pribičević, Rok Kamnik, 2016, original scientific article

Abstract: Displacement research using the three-dimensional global navigation satellite system (GNSS) as part of geodetic monitoring is becoming the key investigation for establishing a cause-and-effect relationships model between external natural factors, on the one hand, and the criteria that describes the level of functionality and safety of the observed natural or artificial object, on the other, in cases of motion of an object in space and time. The main objective of the deformation analysis is to confirm the stabilities of the reference points of a geodetic network, which are used to determine the movements of the control points that are stabilized on the observed objects. The assumption about the stabilities of certain reference points must be based on reasonable grounds, underpinned by measurements and proven by numerical methods. This is one part of the results of the deformation analysis when determining the extent of the movements and deformations. To do this a transformation is used in which a comparison is made between the coordinates of the points for two separate epochs. On the basis of the estimated transformation parameters, possible movements can be concluded within the reference points, i.e., on whether the datum parameters have changed. After confirming the stability of the geodetic network the coordinate differences of identical points measured within the different time windows can be determined as displacements and/or deformations of an object. In this paper one viaduct was assessed through geology and tectonic activities and also a load test of the viaduct was performed. The viaduct is in a quite active region, but the load test showed that the bridge response to the load is as expected.
Keywords: geodesy, geotehnics, monitoring, GNSS measurements, geology, deformation analysis, geodetic network
Published: 18.06.2018; Views: 333; Downloads: 20
.pdf Full text (630,78 KB)
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56.
Metodologija celovitega monitoringa in upravljanja vodnih pregrad
Andrej Rajh, 2016, master's thesis

Abstract: Magistrsko delo obravnava metode, ki omogočajo zagotavljanje celovitega monitoringa upravljanja vodnih pregrad. Poglavitni cilj izvajanja tehničnega opazovanja je zagotavljanje varnosti in upravljanje s tveganji – riziki. V nalogi podajamo pregled zgodovinskega razvoja sistemov opazovanj in havarij ki so se zgodile v preteklosti. Podajamo pregled obstoječih praks in odločevalskih algoritmov ter vzroke, ki so privedli do havarij. Za obstoječe objekte podajamo rešitev, kako na podlagi obstoječih izkušenj in rezultatov opazovanj, vzpostavimo odločevalski mehanizem, ki bo za opazovalna mesta, ki so trenutnno brez posebnosti pravočasno zaznala vplive. Na podlagi tako dopolnjenega odločevalskega algoritma smo pripravili odločitev za vzpostavitev nove vrste opazovanj oz. dodatnega opazovalnega mesta, na podlagi katere bo mogoče sklepati o rzvoju vplivov in posledic
Keywords: sistem tehničnega opazovanja, varnost, odločevalski algoritmi, novi vplivi, nova opazovalna mesta
Published: 12.10.2016; Views: 701; Downloads: 97
.pdf Full text (4,51 MB)

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