Results 21 to 30 of about 6,599,785 (249)

Data-Driven Prediction of Stability of Rock Tunnel Heading: An Application of Machine Learning Models

Infrastructures, 2022
In this paper, Artificial Neural Networks (ANN) have been utilized to predict the stability of a planar tunnel heading in rock mass based on the well-defined Hoek-Brown (HB) yield criterion.
Chayut Ngamkhanong, Suraparb Keawsawasvong, Thira Jearsiripongkul, Lowell Tan Cabangon, Meghdad Payan, Kongtawan Sangjinda, Rungkhun Banyong, Chanachai Thongchom   +7 more
doaj   +1 more source

Refined Analytical Approximations to Limit Cycles for Non-Linear Multi-Degree-of-Freedom Systems [PDF]

, 2019
This paper presents analytical higher order approximations to limit cycles of an autonomous multi-degree-of-freedom system based on an integro-differential equation method for obtaining periodic solutions to nonlinear differential equations.
Lewis, Andrew
core   +2 more sources

Stability analysis of shield tunnel face considering spatial variability of hydraulic parameters

Rock and Soil Mechanics, 2022
The shield method is commonly employed in the construction of urban subways, and the stability of the excavation surface is extremely important for the safety of tunnel construction.
YUAN Shuai, FENG De-wang, ZHANG Sen-hao, XING Yun-peng, KE Zun-qi   +4 more
doaj   +1 more source

Limit analysis of beams under combined stresses [PDF]

Facta Universitatis. Series: Architecture and Civil Engineering, 2008
The problem of the determination of limit bearing capacity of beam cross section under pure bending, eccentric tension, pure shear, as well as combined stress is considered in this paper.
Mijalković Marina, Trajković Marina, Milošević Bojan   +2 more
doaj   +1 more source

Calculation method on the minimum inserted depth of rigid anti-slide piles in the stable layer with oblique top surfaces in the downslope area

Zhongguo dizhi zaihai yu fangzhi xuebao, 2021
In order to calculate the minimum inserted depth of rigid anti-slide piles in stable soil with oblique top surface in the downslope area of the piles in a reinforced slope under a specified factor of safety, according to elastic-foundation-coefficient ...
Shiguo XIAO, Yuan QI, Laibin SUN
doaj   +1 more source

Continuum limit of random matrix products in statistical mechanics of disordered systems [PDF]

, 2018
We consider a particular weak disorder limit ("continuum limit") of matrix products that arise in the analysis of disordered statistical mechanics systems, with a particular focus on random transfer matrices.
Comets, Francis, Giacomin, Giambattista, Greenblatt, Rafael L.   +2 more
core   +4 more sources

Assessment and Fragility of Byzantine Unreinforced Masonry Towers

Infrastructures, 2021
The seismic response of five cultural heritage towers erected between the 10th and 19th century AD are investigated herein. Firstly, their architectural and modal characteristics were studied in the light of seismic events that hit the monuments.
Emmanouil-Georgios Kouris, Leonidas-Alexandros S. Kouris, Avraam A. Konstantinidis, Chris G. Karayannis, Elias C. Aifantis   +4 more
doaj   +1 more source

The Regge Limit for Green Functions in Conformal Field Theory [PDF]

, 2010
We define a Regge limit for off-shell Green functions in quantum field theory, and study it in the particular case of conformal field theories (CFT). Our limit differs from that defined in arXiv:0801.3002, the latter being only a particular corner of the
AH Mueller, AH Mueller, AV Kotikov, AV Kotikov, BW Lee, C Lovelace, D Shapero, DA Dicus, DM Hofman, EA Kuraev, FA Dolan, FA Dolan, FE Low, G. Festuccia, GV Frolov, H Cheng, H Cheng, HB Nielsen, HM Fried, II Balitsky, J-L Gervais, JB Bronzan, JB Bronzan, JL Cardy, JM Maldacena, JS Geronimo, K Seto, L Cornalba, L Cornalba, L Cornalba, L Cornalba, LN Lipatov, M Praszalowicz, MC Bergere, MC Bergere, R Blankenbecler, RA Brandt, RC Brower, S Nussinov, SG Matinyan, SJ Chang, SS Gubser, T Jaroszewicz, T. Banks   +43 more
core   +1 more source

A Calculation Method for Reliability Index of a Deep–Bedded Karst Tunnel Construction with Cavity Located Ahead of Tunnel Working Face

Buildings
For the purpose of reliability quantitative assessment of the surrounding rock of the deeply embedded karst tunnel and the geological body around the cavern in the case of the cavern in the forepart of the tunnel face, on the basis of the upper bound ...
Bo Wu, Wentao Sun, Guowang Meng
doaj   +1 more source

Three-dimensional seismic stability of locally loaded slopes under a rotational velocity field

Frontiers in Earth Science, 2023
In practical engineering, slopes subjected to local loads, like footings of buildings, are common. This paper aims to give an insight into the effect of seismic force on the stability of locally loaded slopes.
Xiaojia Ji, Qingling Wu
doaj   +1 more source