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A platform for research: civil engineering, architecture and urbanism
Design criterion for underground structures is ductility to absorb imposed distortions without losing capacity to carry static loads, rather than resistance to inertial forces; curvature distortion may be calculated from design earthquake spectrum giving amplitudes and wave lengths; shearing distortion, resulting from lag of soil behind bedrock displacement, may be calculated from seismic velocity of ground and depth of overburden; detailed earthquake design criteria for San Francisco BART subways are included; these contain provisions to be made when plastic distortions are imposed on structure. (35383)
Design criterion for underground structures is ductility to absorb imposed distortions without losing capacity to carry static loads, rather than resistance to inertial forces; curvature distortion may be calculated from design earthquake spectrum giving amplitudes and wave lengths; shearing distortion, resulting from lag of soil behind bedrock displacement, may be calculated from seismic velocity of ground and depth of overburden; detailed earthquake design criteria for San Francisco BART subways are included; these contain provisions to be made when plastic distortions are imposed on structure. (35383)
Earthquake design criteria for subways
ASCE J Struct Div
Kuesel, T.R. (author)
1969
19 pages
Article (Journal)
English
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