Premium
Non‐linear earthquake response of concrete gravity dams part 1: Modelling
Author(s) -
ElAidi Bahaa,
Hall John F.
Publication year - 1989
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290180607
Subject(s) - gravity dam , structural engineering , geotechnical engineering , finite element method , spurious relationship , viscoelasticity , geology , cracking , engineering , computer science , materials science , machine learning , composite material
A finite element procedure to model the non‐linear earthquake response of concrete gravity dam systems is presented. A two‐dimensional idealization is adopted for the dam and water in order to simplify the analysis and reduce the computational effort. The foundation of the dam is modelled as a rigid rectangular massless plate attached to a three‐dimensional viscoelastic half‐space. The non‐linear behaviour is represented by smearing techniques and includes tensile cracking with subsequent opening, closing and sliding, as well as water cavitation in the reservoir. Special treatments are applied to suppress spurious oscillations in the water response associated with cavitation and to prevent cracks in the dam from spreading into wide zones. Experience from non‐linear analyses is cited as it affects the design of the algorithm.