Nonlinear Dynamic Analysis for Bridges with Restrainer
Date Issued
2005
Date
2005
Author(s)
Fang, Cha-Hung
DOI
en-US
Abstract
The study focuses on the contribution of bridges with restrainers that consider nonlinear behavior of each pier and restrainers. Based on the results from nonlinear dynamic analysis, we can obtain a reasonable design procedure.
For nonlinear dynamic analysis, each using time history is simulated from keeps phase spectrum and modifies Fourier amplitude. There are three original ground motion are used in the study. So the spectrum compatible design ground motion can be determined for nonlinear dynamic analysis. For handle the responses of restrainer exactly, we use 24 cases from change parameters of restrainer.
Besides the classification of restrainers, we also consider nonlinear behavior about restrainer and pier in bridge structure. That includes check the available seat width, impact event, ductility, force-redistribution. Based on the results from nonlinear dynamic analysis, the method of caltrans can be correction and set up a more reasonable design procedure and some limits and assumptions for the procedure bring out, too.
Subjects
防震拉桿
諧和反應譜之人造地震
非線性動力分析
富氏震幅譜
韌性比
防落長度
Restrainer
Spectrum compatible design ground motion
Fourier amplitude spectrum
Nonlinear dynamic analysis
Ductility ratio
Available seat width
Type
thesis
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