Geostatic analysis of the Zeleni park construction pit in Koper considering small-strain soil stiffness

The subject of diploma thesis is a geostatic analysis for the protection of a deep construction pit for the facility Zeleni park in Koper. This demanding construction pit was dug in sea sediments. Demanding geotechnical conditions required the use of “top-down” method to protect the construction pit with progressive opening of a reinforced concrete diaphragm wall using basement facility plates. Such\ud construction requires a geotechnical calculation of the construction pit considering excavation phases. The main goal of diploma paper is to evaluate the geotechnical research and to make geostatic analyses for construction pit protection observing different material models for soil in undrained, partially drained and drained conditions, followed by a comparison of results.\ud Diploma paper begins with information about the location and soil structure. Geotechnical researches are resumed and implementation technology in relation to construction pit protection is explained. In continuation, comparative calculations of construction pit protection with the diaphragm wall are presented using two material models for soil with isotropic hardening: the Hardening Soil Model (HS)\ud and the Hardening Soil Model with Small-Strain Stiffness (HSS) which also observes small-strain stiffness of the ground. A calculation of maximum axial forces in bracing plates is made for each model with maximum values of transverse forces, bending moments in diaphragm wall and diaphragm wall shifts. Diaphragm wall was dimensioned for all analyses. Results of geotechnical analyses confirmed\ud the reasonable use of the HSS model which observes small-strain stiffness of the ground. Calculation shifts of protection construction and the background are more realistic when the ground is considered for small strain, with less force impact on the diaphragm wall and on bracing plates

Dendrochronological dating of objects located in Dolenjska region

V diplomski nalogi so dendrokronološko datirani trije objekti Dolenjske regije – Škarjatov kozolec v Mirni, cerkev svetega Vida v Šentvidu pri Stični in Kosmov vinski hram v Malem Cirniku. Vsi objekti so grajeni iz hrastovega lesa (Quercus sp.) in primerjani z dolenjsko kronologijo Gozdarskega inštituta Slovenije. Datacije so izvedene s pomočjo statističnih analiz – korelacijske analize, t vrednosti po Baillie-Pilcherju in s koeficientom časovne skladnosti in z vizualno primerjavo krivulj. Zaradi starosti cerkve svetega Vida, je bila analiza opravljena z C14 analizo, saj za tisto obdobje še ni bilo ustvarjene referenčne kronologije. Objekt v Mirni je uvrščen v leto 1626, vinski hram v leto 1616, pri cerkvi pa je šlo zgolj za prenovo, romanska osnova je bila v stilu gotike prenovljena po letu 1483.In this thesis, the following three objects from the Lower Carniola have been dated by dendrochronology: the Škarjat’s hayrack from Mirna, the church of Saint Vid from Šentvid near Stična, and the Kosmo’s wine cottage from Mali Cirnik. All of them are made of oak wood (Quercus sp.) and compared to Lower Carniola’s chronology of the Slovenian Forestry Institute. The dating was done with the help of the statistical analyses – the correlation analyses, t values by Baillie-Pilcher and Gleichläufigkeit, and the visual comparison of curves with reference to chronologies. It was impossible to date the church of Saint Vid with the standard comparison methods. Because it is so old, the C14 analyses were made instead. Hayrack from Mirna was dated after the year 1626, wine cottage after 1616 and the church somewhere after 1483. The analysed church’s samples were parts of its renovation not the original construction, because the church\u27s Romanesque base was renovated in the Gothic style after 1483