Research on Applicability for Parameter in Seismic Design of Buried Pipeline and Pushover Analysis for Soil Liquefaction
Date Issued
2014
Date
2014
Author(s)
Chiu, Yu-Hsuan
Abstract
When we refer to the foreign seismic design manual of underground water pipeline, we can not completely trust him. We can not say that Taiwan can use this set of methods. Therefore, we must have some action of localization and the applicability. This thesis will discuss an equation, which is calculated for the peak ground velocity (PGV) in the seismic design of underground pipeline. Due to the attempt to set a custom PGV formula suitable, we analyze 182 time history ground motion records. By the average of all the data, we assume an equation. Next, we classified this equation by the analysis of the site classification, distance to the Epicenter and so on. Finally, we will suggest an equation which satisfied Tiawan’s environment.
The second part is carrying out nonlinear pushover analysis for pipeline to investigate the influence of soil liquefaction, which using 400mm diameter ductile iron pipe with K-type-joint for model. By the results of the analysis, we can be found that the joint distribution is strongly impact on the strength of pipeline. When the range over 16 meters of liquefied, the pipeline fails because it is inability to bear self-weight. Although the strength of pipeline is strongly correlated with the joint distribution, but there do not have a distribution type that is always of higher strength. The influence of joint distribution is correlated with the number of body segments in liquefaction, but it will be less when the range of liquefaction increase.
Subjects
自來水地下管線
管線耐震設計
延性鑄鐵管
K型接頭
非線性鉸
側推分析
土壤液化
Type
thesis
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