Modeling of the stress-strain behavior in hard soils and soft rocks

Abstract

The paper begins with a definition of hard soils and soft rocks (HSSR); this is followed by a short overview of the typical stress-strain behavior of HSSR. It is shown that in spite of the differences in the origin, type and strength of materials, similar stress-strain behaviors can be observed for different materials, ranging from soils to rocks. Based on this observed similarity a theoretical framework can be postulated, with which an appropriate constitutive model for HSSR can be formulated. This model includes the concepts of structure and destructurization as intrinsic material properties. A model named S_BRICK that takes into account the structure and destructurization has been developed and a comparison of this model’s predictions with laboratory results is presented.

Keywords

geomechanics;soft rocks;hard soils;stress-strain behaviour;constitutive modeling;structure;destructurization;numerical modeling;

Data

Language:	English
Year of publishing:	2007
Typology:	1.01 - Original Scientific Article
Organization:	UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
UDC:	624.131
COBISS:	1330915
ISSN:	1854-0171
Parent publication:	Acta geotechnica Slovenica
Views:	841
Downloads:	77
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary title:	Modeliranje napetostno-deformacijskega obnašanja mehkih kamnin in trdih zemljin
Secondary abstract:	V prispevku je uvodoma predstavljena osnovna definicija mehkih kamnin in trdih zemljin. V nadaljevanju je nato predstavljeno značilno napetostno-deformacijsko obnašanje mehkih kamnin in zemljin, kjer bo prikazano, da se materiali z različno sestavo in genezo v pomembnih vidikih obnašajo podobno. To omogoča postavitev teoretičnega okvirja, znotraj katerega je mogoče ustrezno formulirati in postaviti konstitutiven materialni model, ki opisuje njihovo obnašanje. Ključen element za postavitev teoretičnega okvirja in konstitutivnega modela je vpeljava koncepta strukture in destrukturizacije. V zaključku je na kratko predstavljen konstitutivni model za mehke kamnine in trde zemljine S_BRICK, ter rezultati primerjave napovedi modela z rezultati laboratorijskih preiskav.
Secondary keywords:	geomehanika;mehke kamnine;trde zemljine;napetostno-deformacijsko obnašanje;konstitutivni modeli;S_BRICK;BRICK;struktura;destrukturizacija;numerično modeliranje;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 4-15
Volume:	ǂVol. ǂ4
Issue:	ǂšt. ǂ2
Chronology:	2007
ID:	10935046