LITOLOŠKI SASTAV I GEOTEHNIČKI PARAMETRI TEMELJNOG TLA POVIJESNE JEZGRE GRADA PETRINJE

Abstract

With the aim of reconstruction of the historical center of the city of Petrinja, which was completely destroyed in the devastating earthquake, geotechnical surveys were carried out on the sites of collapsed and damaged buildings. With the intention of obtaining an overview of the broader lithological soil composition, a comparison with the soil profile east of the town of Petrinja is made in this paper. For this purpose, the Petrinja-Moscenica-Sisak profile was selected. Three main geotechnical zones were recognized in the profile. For each geotechnical zone comparison of characteristics tip resistance showed that the mechanical properties are relatively uniform in a wider area, with the lowest values in the area of the historical center of Petrinja. The upper lithological member was named geotechnical zone 1 and extends to a depth of 7 meters. The named layer was separated for systematization of geotechnical parameters in the city center. The characteristic parameter values were derived from the laboratory results, which were then compared with the cone penetration results, also after statistical processing. The analyzed data are in agreement. Thus, the obtained parameters can be used as intermediate parameters for the Petrinja city center.