Title: Numerical modelling of limit load increase due to shear band enhancement
Language: English
Authors: Seitz, Karlotta Franziska 
Grabe, Jürgen 
Issue Date: 2018
Source: Numerical methods in geotechnical engineering IX (2): 1391-1398 (2018)
Journal or Series Name: Numerical methods in geotechnical engineering IX 
Abstract (english): Strengthening of just the shear bands is a patented idea to prevent a critical failure mechanism in order to increase the capacity of a geotechnical system with a minimum of material. Numerical modelling is used to examine this proposed method for limit load increase. Two basic geotechnical systems are analysed using OptumG2 for finite element limit analysis (fela): a shallow foundation with bearing failure and a retaining wall with horizontal wall movement resulting in the active earth wedge. An automated procedure identifies and enhances the shear band using a coupling of OptumG2 with MATLAB. The fela is performed with OptumG2 and run from a MATLAB script, which identifies the shear band based on the simulation result, sets the area of shear band enhancement and reruns the fela. The numerical simulations show that the shear band enhancement leads to a capacity increase for a simple geotechnical system. © 2018 Taylor & Francis Group, London, UK.
Conference: 9th European Conference on Numerical Methods in Geotechnical Engineering 
URI: http://hdl.handle.net/11420/2161
ISBN: 978-113854446-8
Institute: Geotechnik und Baubetrieb B-5 
Type: InProceedings (Aufsatz / Paper einer Konferenz etc.)
Funded by: This work is funded by the German Research Foundation (DFG) “Increase of bearing capacity for geotechnical constructions through shear zone enhancement” (GR 1024/23–1).
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