Very small strain stiffness anisotropy of sedimentary clays is investigated. First, a general
formulation of transversely isotropic elastic model is summarised, followed by a description …

This paper provides the background to the 50th Rankine Lecture. It considers the growth in
emphasis of the prediction of ground displacements during design in the past two decades …

Hypoplasticity has been around for some thirty years now. Starting from the crazy and yet
brilliant idea of Dimitrios Kolymbas in 1980s, it matured in the first half of 1990s into a …

The small strain stiffness and the stiffness degradation curve of soils are required in
advanced numerical analyses of geotechnical engineering problems. The shear modulus at …

A hypoplastic model for clays is developed to predict anisotropy of very small strain stiffness.
The existing hypoplastic model, with explicit formulation of the asymptotic state boundary …

This paper is the first of a set of linked publications on the PISA Joint Industry Research
Project, which was concerned with the development of improved design methods for …

The paper reports the shear strength anisotropy of the natural, highly overconsolidated,
London Clay from Heathrow Terminal 5 as established by comprehensive hollow cylinder …

A database with about 60 undrained monotonic and cyclic triaxial tests on kaolin is
presented. In the monotonic tests, the influences of consolidation pressure …

The innovative engineering approach adopted for the new Terminal 5 at Heathrow Airport
called for an advanced investigation of the London Clay strata, including detailed in situ …

A complete characterization detailing the intricate and complex response of geomaterials
remains a challenging task that can only be realized on a partial basis via a careful drilling …