Soil-nail wall stability analysis using ANFIS

Primož Jelušič (Author), Bojan Žlender (Author)

Abstract

The safety-factor optimization for a soil-nail wall is presented. The optimization is performed using the non-linear programming (NLP) approach. For this purpose, the NLP optimization model OPTINC was developed. The safety factor and the optimal inclination of the soil nails from the horizontal direction depend on the design of the soil-nail wall. Based on these results the ANFIS-INC model was developed for the prediction of the optimal inclination of the soil nail for any design of soil-nail wall. Additionally, an ANFIS-SF model was developed to predict the safety factor for different inclinations of the wall, the slope angle of the terrain, the length of the nails, and the hole diameter. It was found that the inclination of the soil nail should be adjusted to the inclination of wall, the length of nail, the slope angle of the terrain and the hole diameter. With increasing inclination of the wall, the length of the soil nail and the hole diameter, the safety factor is increasing. On the other hand, the safety factor is decreasing with the increasing slope angle of the terrain. The use of nonlinear programming and an Adaptive Network based Fuzzy Inference System allows a comprehensive analysis of the geotechnical problems.

Keywords

soil-nail;wall stability;optimization;NLP;ANFIS;

Data

Language:	English
Year of publishing:	2013
Typology:	1.01 - Original Scientific Article
Organization:	UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
UDC:	624.131
COBISS:	16990998
ISSN:	1854-0171
Parent publication:	Acta geotechnica Slovenica
Views:	1274
Downloads:	53
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Other data

Secondary language:	Slovenian
Secondary title:	Uporaba ANFIS-a pri stabilnostnih analizah sten z žebljano zemljino
Secondary abstract:	V članku so izvedli optimiranje varnostnega faktorja sidrane stene. Optimiranje so izvedli s pristopom nelineranega programiranja in v ta namen razvili optimizacijski model OPTINC. Varnostni faktor in optimalni nagib sidra od horizontalne smeri sta odvisna od tipa sidrane stene. Na osnovi dobljenih rezultatov so razvili ANFIS-INC model za napovedovanje optimalnega nagiba sider za poljubno sidrano steno. Razvili so tudi model ANFIS-SF za napovedovanje varnostnega faktorja za različne nagibe sten, kota nagiba brežine, dolžine sider in premera vrtine. Ugotovili so, da se mora nagib sidra prilagoditi nagibu stene, dolžini sidra, kotu nagiba brežine in premeru vrtine. S povečanjem nagiba stene, dolžine sidra in premera vrtine se varnostni faktor povečuje. Po drugi strani pa se varnostni faktor zmanjšuje s povečanjem kota brežine. Uporaba nelineranega programiranja in metode ANFIS (Adaptive Network based Fuzzy Inference System) omogoča obsežno analizo geotehničnih problemov.
Secondary keywords:	žebljana zemljina;stabilnost stene;optimizacija;NLP;ANFIS;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 61-73
Volume:	ǂVol. ǂ10
Issue:	ǂ[no.] ǂ1
Chronology:	2013
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;civil and structural engineering in general;gradbena tehnika;gradbeništvo;substructures;earthworks;foundations;tunnelling;spodnje nosilne konstrukcije (podporne konstrukcije;spodnji ustroji);zemeljska dela (ki so rezultat izkopavanja in nasipanja);temelji;gradnja predorov;
ID:	1439569