Lateral spreading-induced abutment rotation in the 2011 Christchurch earthquake: observations and analysis
作者： J.J.M. HASKELL , S.P.G. MADABHUSHI , M. CUBRINOVSKI , A. WINKLEY
关键词: Soil structure interaction 、 Seismology 、 Abutment 、 Pile 、 Liquefaction 、 Geology 、 Rotation 、 Geotechnical engineering 、 Deformation (meteorology) 、 Compression (geology)
摘要: A series of strong earthquakes near Christchurch, New Zealand, occurred between September 2010 and December 2011, causing widespread liquefaction throughout the city's suburbs. Lateral spreading developed along Avon River, damaging many bridges east city centre. The short- to medium-span exhibited a similar pattern deformation, involving back-rotation their abutments compression decks. By explicitly considering rotational equilibrium about point contact with rigid bridge decks, it is shown that relatively small kinematic demands from laterally backfill soil are needed initiate pile yielding, this mode deformation should be taken into account in design abutment piles.
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