NZS 4431:2022 – Engineered fill construction for lightweight structures is an update of the 1989 standard, with significant changes reflecting over thirty of years of improvements in geotechnical investigation, design and construction practice, test methods and environmental, consenting and health and safety obligations. The standard…
This paper presents the development and response of a Ruaumoko model for the representation of uplift and reattachment of a shallow foundation. The vertical load in the foundation is used to control the characteristics of moment and shear loads, as these values must reduce to zero when…
The current practice in New Zealand for seismic design of shallow foundations is to ensure the LRFD inequality is satisfied, meaning not all of the available bearing strength is mobilised. However, the occurrence of bearing failure may be acceptable, provided the resulting permanent displacements are also…
Abstract It is widely acknowledged that soil-structure interaction (SSI) has an important effect on foundation performance during earthquake loading. The standard way of handling this is to assume elastic behaviour of the soil beneath and around the foundation. For shallow foundation response there are three…
Abstract The moment-rotation response of shallow foundations is inherently nonlinear being controlled by the “elastic” stiffness at small rotations and the moment capacity of the foundation at larger rotations. Simple elastic soil structure interaction (SSI) does not model this rotational response and elastic radiation damping…
There is increasing awareness in earthquake engineering of the need to consider the structure, foundation, and underlying soil in an integrated fashion. The traditional design scenario, where the geotechnical and structural considerations are dealt with separately, results in inefficient and sometimes less effective foundation systems. Integrated numerical models…
