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Analysis of piled bridges at sites prone to liquefaction and lateral spreading in New Zealand – NZ Transport Agency Report

Analysis of piled bridges at sites prone to liquefaction and lateral spreading in New Zealand – NZ Transport Agency Report

INTRODUCTION Early this year, New Zealand Transport Agency (NZTA) has published the NZTA Stage 2 Research Report titled “Analysis of piled bridges at sites prone to liquefaction and lateral spreading in New Zealand”. The report is available on NZTA’s website at the following address: http://www.nzta.govt.nz/resources/analysis-of-piled-bridges-at-sites-prone-to-liquefaction-and-lateral-spreading-in-new-zealand/…

National Design Guidelines for Ground Improvement of Soils Prone to Liquefaction

National Design Guidelines for Ground Improvement of Soils Prone to Liquefaction

Abstract One of the Canterbury Earthquake Royal Commission recommendations was that “ground improvement should be considered as part of the foundation system of a building and reliability factors included in the design procedures” and that “the Ministry of Business, Innovation and Employment should consider the…

Steel screw settlement reduction piles for a raft foundation on soft soil

Steel screw settlement reduction piles for a raft foundation on soft soil

The new Gisborne Police Station building was built on a soft site occupied by a historical retail building. The façade of the historical building had to be retained, and the building demolished. Based on complex geotechnical investigations and consideration of various foundation options, Opus recommended that a piled…

Proposed amendments to geotechnical requirements of NZTA Bridge Manual

Proposed amendments to geotechnical requirements of NZTA Bridge Manual

Work is currently underway to update the NZTA Bridge Manual (BM) based on recent advancements in bridge design practice in New Zealand and worldwide, and also the NZTA’s experience on the performance of bridges during the Canterbury earthquakes. In the current 2nd edition of the BM various…