Abstract A proposed expansion at the Lyttelton Port of Christchurch in New Zealand consists of the reclamation of approximately 34 hectares of new land and the construction of a new wharf supported on piles. Seismic response of the reclamation and soil-pile interaction have been key…
Abstract A site-specific geotechnical engineering approach was proposed as part of a seismic retrofit design of a multi-storey building in Christchurch CBD (Central Business District). Various analytical techniques were utilized including Probabilistic Seismic Hazard Analysis (PSHA), development of time histories, Site Specific Response Analysis (SSRA),…
The purpose of this paper is to evaluate the provisions of the New Zealand structural design actions standard (NZS 1170.5 (2004)) with respect to classical elastic soil-structure interaction effects on the earthquake design of shallow foundations supporting multi-storey buildings. Work by earlier researchers had led to the suggestion…
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…
The soil site spectra for site classes D and E in the current NZ design code impose a significant increase in the displacement demands, between 50 and 300% for a structure with a period of 1.0s or longer, compared with a rock site (class A/B)…
The soil site spectra for site classes D and E in the current NZ design code impose a significant increase in the displacement demands, between 50 and 300% for a structure with a period of 1.0s or longer, compared with a rock site (class A/B)…
This contribution addresses the seat length required to avoid unseating of bridge girders under strong earthquakes. In the investigation simulated ground motions according to the Japanese design spectrum for soft soil site are applied. The analysis of two adjacent bridge structures is performed using a combined finite…
A simplified method of assessing soil structure interaction (SSI) using a single degree of freedom representation of the structure is presented. The simplified method uses recommendations from the SEI/ASCE code and implements the response spectra of NZS 1170.5. Three typical structures are analysed, and it…