Enhancing the resilience of low-rise buildings: a New Zealand perspective

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Conference Contributions - Published
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2019
Authors
Chiaro G
Palermo A
Granello G
Hernandez E
Tasalloti A
Stratford C
Banasiak LJ
Abstract

Recent earthquakes in New Zealand proved that a shift is necessary in the current design practice of structures to achieve better seismic performance. Following such events, the number of new buildings using innovative technical solutions (e.g. base isolation, controlled rocking systems, damping devices, etc.), has increased, especially in Christchurch. However, the application of these innovative technologies is often restricted to medium-high rise buildings due to the maximum benefit to cost ratio. In this context, to address this issue, a multi-disciplinary geo-structural-environmental engineering project funded by the Ministry of Business Innovation and Employment (MBIE) is being carried out at the University of Canterbury. The project aims at developing a foundation system which will improve the seismic performance of medium-density low-rise buildings. Such foundation is characterized by two main elements: 1) granulated tyre rubber mixed with gravelly soils to be placed beneath the structure, with the goal of damping part of the seismic energy before it reaches the superstructure; and 2) a basement raft made of steel-fibre rubberised concrete to enhance the flexibility of the foundation under differential displacement demand. In the first part of this paper, the overarching objectives, scope and methodology of the project will be briefly described. Then, preliminary findings on the materials characterization, i.e., the gravel-rubber mixtures and steel-fibre rubberised concrete mixes, will be presented and discussed with focus on the mechanical behaviour.

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Chiaro G, Palermo A, Granello G, Hernandez E, Tasalloti A, Stratford C, Banasiak LJ (2019). Enhancing the resilience of low-rise buildings: a New Zealand perspective. Greenwich, London, UK: 2019 Society for Earthquake and Civil Engineering Dynamics Conference (SECED 2019). 09/09/2019-10/09/2019.
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Fields of Research::40 - Engineering::4005 - Civil engineering::400510 - Structural engineering
Fields of Research::40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineering
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