Upper-bound solutions of three-dimensional passive earth pressures

Stanislav Škrabl (Avtor), Borut Macuh (Avtor)

Povzetek

This paper presents a novel approach to the determination of passive soil pressures: using the upper-bound method within the framework of limit analysistheory. It is based on a three-dimensional, kinematically admissible, rotational, hyperbolical failure mechanism. The failure mechanism is composed of the central and two lateral bodies, which are connected by a common velocity field. This approach is similar to two-dimensional stability analyses, where the log spiral potential failure surface is considered. The front surface of the central body interacts with the retaining wallč the uppersurface can be loaded by surcharge loadingč and the log spiral segment defines the curved failure surface of the central part. The cross sections of the lateral bodies are in agreement with the cross section of the central body. On the outer side, they are laterally bounded by a curved and kinematically admissible hyperbolic surface, which is defined by enveloping the hyperbolical half cones and part of the case surface of the leading half cone. The results give values for the passive soil pressure coefficients that are for most cases lower than the values determined by the upper-bound method of limit analysis for a translational failure mechanism, as published in the literature.

Ključne besede

geomehanika;interakcija objekt-tla;limitna analiza;zemljinski pritiski;porušne ploskve;pasivni pritiski;geomechanics;soil-structure interaction;limit analysis;earth pressures;passive pressure;failure surface;

Podatki

Jezik:	Angleški jezik
Leto izida:	2005
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FGPA - Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo
UDK:	624.131.5
COBISS:	10333718
ISSN:	0008-3674
Št. ogledov:	1454
Št. prenosov:	91
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarne ključne besede:	geomehanika;interakcija objekt-tla;limitna analiza;zemljinski pritiski;porušne ploskve;pasivni pritiski;
URN:	URN:SI:UM:
Strani:	str. 1449-1460
Letnik:	ǂVol. ǂ42
Zvezek:	ǂno. ǂ5
Čas izdaje:	Oct. 2005
ID:	8718380