Power Spectrum Method for Bridge Seismic Analysis and Its Applications in China
Abstract eng: In China，the seismic design of highway bridges must comply with
(1989) since 1990, which is valid only for bridges with the main span shorter than 150m. The spatial effects between seismic excitations acting on different piers, such as the wave passage effect or the incoherence effect, were not mentioned, and only the response spectrum Method and the time history scheme were specified for seismic analysis, with the power spectrum method excluded. The above < Specifications 1989> (its bridges part) will soon be updated by , published in September, 2008. In this , some issues about this alternation will be described. In , design principles are given for highway bridges with net-span longer than 150m. Therefore, the seismic spatial effects should be taken into account for such bridges. The random vibration based power spectrum method (PSM) is added as an optional means for structural seismic analysis. As the Pseudo Excitation Method (PEM) developed in China has been widely accepted as an accurate and efficient algorithm of PSM, some details about PEM are also involved in and will be explained in this paper.
Contributors:
Conference Title:
Conference Title:
14th World Conference on Earthquake Engineering
Conference Venue:
Bejing (CN)
Conference Dates:
2008-10-12 / 2008-10-17
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
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Record created 2014-12-05, last modified 2014-12-05
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