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The estimation of earthquake‐generated additional tension in a suspension bridge cable
Author(s) -
Irvine H. M.
Publication year - 1980
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.4290080306
Subject(s) - bridge (graph theory) , tension (geology) , suspension (topology) , structural engineering , phase (matter) , span (engineering) , engineering , mathematics , physics , classical mechanics , medicine , quantum mechanics , homotopy , pure mathematics , moment (physics)
A simple formula, equation (15), is derived for the peak additional cable tension that can be expected in a suspension bridge undergoing earthquake excitation. The method involves application of the response spectrum technique and rests on several plausible assumptions. The formula gives a reasonable upper bound, suitable for preliminary design estimates, irrespective of whether the ground motions at each end are in‐phase or, as is probable with a long span bridge, whether they are out‐of‐phase.