Full-scale Static and Dynamic Testing of Timber Frame Houses Damaged in the Christchurch Earthquakes

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Conference Contributions - Other
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Date
2018
Authors
Morris H
Carradine D
Li M
Abstract

Very little research exists on total house seismic performance. This testing programme provides stiffness and response data for five houses of varying ages including contributions of non-structural elements. These light timber framed houses in Christchurch, New Zealand had minor earthquake damage from the 2011 earthquakes and were lateral load tested on site to determine their strength and stiffness, and preliminary damage thresholds. Dynamic characteristics were also investigated. Various loading schemes were utilised including quasi-static loading above the foundation, unidirectional loading through the floor diaphragm, cyclic quasi-static loading and snapback tests. Dynamic analysis on two houses provided the seismic safety levels of post-quake houses with respect to local hazard levels. Compared with New Zealand Building Standards all the tested houses had an excess of strength, damage is a significant consideration in earthquake resilience and was observed in all of the houses. A full size house laboratory test is proposed.

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Keywords
Light timber frame, Seismic response, Full-scale testing, Dynamic assessment
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
Fields of Research::40 - Engineering::4005 - Civil engineering::400510 - Structural engineering
Fields of Research::40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineering
Fields of Research::40 - Engineering::4005 - Civil engineering::400505 - Construction materials
Fields of Research::40 - Engineering::4016 - Materials engineering::401610 - Timber, pulp and paper
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