Vol.8, No 2, 2010 pp. 135 - 143
UDC 624.151.5:624.159.2(045)=111
DOI: 10.2298/FUACE1002135D
A COMPARATIVE THEORETICAL–EXPERIMENTAL ANALYSIS OF SETTLEMENTS OF SHALLOW FOUNDATIONS ON GRANULAR SOIL
Nebojša Davidović, Zoran Bonić, Verka Prolović, Biljana Mladenović, Dragoslav Stojić
Faculty of Civil Engineering and Architecture, University of Niš, Serbia
E-mail: dnebojsa@gaf.ni.ac.rs
The paper presents a brief description of experiment within the research project "Theoretical and experimental analysis of interaction of shallow reinforced concrete foundations and soil for the purpose of improvement of national regulations and implementaation of Eurocode system" where in situ tests of a series of reinforced concrete foundation footing were performed, by loading until failure. As a rule, methods for calculation of shallow foundations settlement on granular soils overestimate the expected settlement, and underestimate soil bearing capacity, which results in a conservative foundation design. In order to test accuracy and reliability of the different settlements prediction methods, a comparative analysis of settlements calculated using these methods and those measured during experiment, was performed.
Key words: settlements, shallow foundations, granular soil, experiment, accuracy, reliability, comparative analysis.
UPOREDNA TEORIJSKO-EKSPERIMENTALNA ANALIZA SLEGANJA PLITKIH TEMELJA NA KRUPNOZRNOM TLU
U radu je dat kratak opis eksperimentalnog dela naučno-istraživačkog projekta ˝Teorijska i eksperimentalna analiza interakcije plitkih armirano-betonskih temelja i tla za potrebe unapređenja domaće regulative i primene sistema Evrokodova˝, u okviru koga je izvršeno eksperimentalno ispitivanje serije armirano-betonskih temelja, opterećivanjem do loma. Po pravilu, metode za proračun sleganja plitkih temelja na krupnozrnom tlu precenjuju očekivana sleganja, a potcenjuju nosivost tla, što dovodi do toga da je dimenzionisanje temelja konzervativno. U cilju provere tačnosti i pouzdanosti različitih metoda za proračun sleganja uizvršena je uporedna analiza sleganja sračunatih primenom ovih metoda i onih izmerenih tokom eksperimenta.
Ključne reči: sleganja, plitki temelji, krupnozrno tlo, eksperiment, tačnost, pouzdanost, uporedna analiza.