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Seismic response of a long span cable
Author(s) -
Rao G. Visweswara,
Iyengar R. N.
Publication year - 1991
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.4290200304
Subject(s) - span (engineering) , response spectrum , structural engineering , modal , modal analysis , engineering , equations of motion , tension (geology) , incremental dynamic analysis , seismic analysis , geology , physics , finite element method , materials science , classical mechanics , polymer chemistry , moment (physics)
Abstract The dynamic response of a single span cable due to a travelling seismic excitation is studied in this paper. The influence of propagation time between the supports is investigated in detail. The importance of considering both vertical and longitudinal equations of motion in the analysis is highlighted. The results indicate the considerable influence of the time‐lagged support motions on the cable dynamic tension. A modal combination rule based on the response spectrum method is developed to arrive at the peak estimates of the cable response. Some significant aspects of cable behaviour, especially under horizontal support motion, are discussed.