Extending the strain path method analogy for modelling penetrometer installation
✍ Scribed by Gill, D. R.; Lehane, B. M.
- Book ID
- 101220650
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 183 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0363-9061
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✦ Synopsis
The Strain Path Method (SPM) is an approximate framework for simulating the disturbance caused by piles or penetrometers in soil. The key conceptual assumption of the SPM is that the deformation and strain "elds caused during these penetration processes are strongly kinematically constrained (especially during undrained penetration of clays) and can be estimated independently from the actual constitutive properties of the surrounding soil. Previous applications of SPM have estimated strain "elds for a variety of penetrometer geometries using velocity "elds of ideal inviscid #uids. This paper re"nes the strain "eld for penetrometers with 603 conical tips using numerically computed velocity "elds in viscous #uids with a variety of boundary conditions imposed on the penetrometer shaft. Following a parametric study, a set of #ow conditions is selected which provides a best "t between computed soil deformations and physical displacement measurements made in three separate experiments. The approach is simple and rapid and, while highlighting some of the inaccuracies associated with the existing SPM solution, may also be used for comparative purposes to assist the development of other approaches to the deep penetration problem.