Vertical Motion Inputs for Seismic Analysis of Large Span Bridge

Abstract:

In seismic analysis of large span bridge, inconsistent ground motions in three directions, lengthwise, lateral and vertical are required to input at the base of each of the two main girder piers. In order to adopt synthesized motion field for the inputs, a simple way to prepare the vertical motion is introduced for improvisation at this moment in this paper, since the synthesis in general consists of two parts, the low frequency ground motion calculated by a numerical method, like FEM, and the high frequency motion synthesized by random approach, and the result of the former is in three dimensional, while that of the latter has just horizontal component. The vertical acceleration time histories proposed in the paper show the way is available.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 1403-1406
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.1403
• Online since: January 2013
• Authors: Zheng Ru Tao, Xia Xin Tao
• Keywords: Inconsistent Input, Synthesized Ground Motion, Vertical Component

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