Abstract
The problem of determining the best profile for a c, φ soil slope is tackled, with reference to rigid rotational failure mechanisms. By means of limit analysis, upper bound values of collapse load are determined. A new mathematical function is derived to compute the external work made by the weight of a double spiral shaped soil region sliding away. It is found that a log spiral front is associated with a larger safety factor than a planar one. The obtained results may also explain the log-spiral shape of perimeter walls of some typical Japanese castles.
| Original language | English |
|---|---|
| Pages (from-to) | 717-731 |
| Number of pages | 14 |
| Journal | Soils and foundations |
| Volume | 47 |
| Issue number | 4 |
| Publication status | Published - Aug 2007 |
Keywords
- cohesive-frictional materials
- limit analysis
- optimization
- slope stability
- upper bound
- civil engineering