ǂThe ǂlimit values and the distribution of three-dimensional passive earth pressures

Abstract

Članek obravnava izvirni pristop določanja kritične razporeditve in mejnih vrednosti pasivnih zemeljskih tlakov za tri-dimenzionalne primere po metodi mejne analize in teorema zgornje vrednosti. Za določanje kritične razporeditve pasivnih tlakov vzdolž višine podporne konstrukcije je uporabljena metoda mejne analize z množico tri-dimenzionalnih kinematično dopustnih hiperboličnih rotacijskih porušnih mehanizmov po metodi postopnega določanja intenzitete pasivnih tlakov od zgoraj navzdol. Določena je kritična razporeditev, prijemališče in rezultantna vrednost pasivnih zemeljskih tlakov, ki se z ozirom na izbrani kinematični model lahko aktivirajo ob mejnem stanju. Rezultati analiz kažejo, da je skupna vsota pasivnih tlakov z upoštevanjem kritične razporeditve manjša od dosedaj objavljenih primerljivih vrednosti v literaturi, višina prijemališča rezultante pa je neodvisna od trenja med podpornimi konstrukcijami in zalednimi zemljinami.

Keywords

limit analysis;earth pressure;passive pressure;failure surface;soil-structure interaction;

Data

Language:	English
Year of publishing:	2008
Typology:	1.01 - Original Scientific Article
Organization:	UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
UDC:	624.131
COBISS:	12399382
ISSN:	1854-0171
Parent publication:	Acta geotechnica Slovenica
Views:	597
Downloads:	47
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary title:	Mejne vrednosti in razporeditev 3D pasivnih zemeljskih pritiskov
Secondary abstract:	This paper presents a novel approach to the determination of the critical distribution and limit values of three-dimensional passive soil pressures acting on flexible walls following the upper-bound method within the framework of the limit-analysis theory. The method of limit analysis with a set of three-dimensional kinematically admissible hyperbolic translational failure mechanisms is used to determine the critical distribution of the passive pressures along the retaining structurećs height. The intensity of thepassive pressures is gradually determined with the mentioned translational failure mechanisms in the top-down direction. Thus, the critical distribution,the trust point and the resultant of the passive pressures that can be activated at the limit state for the chosen kinematic model are obtained. The results of the analyses show that the total sum of passive pressures, considering the critical distribution, is lower than the comparable values published in the literature. Furthermore, the trust point of the passive pressure resultant is independent of the friction between the retaining structures and the soil.
Secondary keywords:	mejna analiza;zemeljski tlak;pasivni tlak;porušna površina;interakcija zemljina-konstrukcija;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 21-34
Volume:	ǂVol. ǂ5
Issue:	1
Chronology:	2008
ID:	10939518