Displacement-Based Approach for Assessing Earthquake-Induced Shallow and Deep Slope Failures
碩士 === 國立中興大學 === 土木工程學系所 === 103 === Newmark’s displacement method is a common method for slope stability analysis under seismic loading. Yielding acceleration (ky), defined as a threshold acceleration, is an important parameter for the analysis of slope stability in the Newmark’s displacement meth...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Others |
Language: | zh-TW |
Published: |
2015
|
Online Access: | http://ndltd.ncl.edu.tw/handle/33667671400602230275 |
id |
ndltd-TW-103NCHU5015020 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-TW-103NCHU50150202017-03-26T04:24:14Z http://ndltd.ncl.edu.tw/handle/33667671400602230275 Displacement-Based Approach for Assessing Earthquake-Induced Shallow and Deep Slope Failures 邊坡受震之深層與淺層位移破壞評估方法 Yu-Chun Chien 簡佑鈞 碩士 國立中興大學 土木工程學系所 103 Newmark’s displacement method is a common method for slope stability analysis under seismic loading. Yielding acceleration (ky), defined as a threshold acceleration, is an important parameter for the analysis of slope stability in the Newmark’s displacement method. When the earthquake-induced acceleration exceeds the yielding acceleration, the slope begins to slip. Usually, the yield acceleration cannot be calculated directly but be obtained through an iterative analysis. The iterative calculation makes the Newnmak method time-consuming and costly, which results in a huge expense especially for a region-wide assessment. In order to enhance the effectiveness of the Newmark analysis, this study developed a simple method to assess earthquake-induced displacement. This study includes two main parts. The first part is, based on large amounts of data of slope stability analysis, to develop the relationship between the safety factor (FS) and the soil parameters and to define the relationship between the shape of failure and ky. By means of the developed relationships, we could directly calculate FS and ky based on soil parameters and slope geometry. The second part is to develop a prediction model for Newmark’s displacement using the data of Chi-Chi earthquake. In reality, the slope is a flexible block but it is assumed as a rigid block in Newmark’s method. Therefore, this study uses one-dimensional equivalent linear analysis to account for the influence of flexible slope on the incident motion and access how it modifies the rigid-displacement model. By combining the ky in the first part and the developed model in the second part, it is easily to predict the displacement of earthquake-induced shallow and deep slope failures. 蔡祁欽 2015 學位論文 ; thesis 86 zh-TW |
collection |
NDLTD |
language |
zh-TW |
format |
Others
|
sources |
NDLTD |
description |
碩士 === 國立中興大學 === 土木工程學系所 === 103 === Newmark’s displacement method is a common method for slope stability analysis under seismic loading. Yielding acceleration (ky), defined as a threshold acceleration, is an important parameter for the analysis of slope stability in the Newmark’s displacement method. When the earthquake-induced acceleration exceeds the yielding acceleration, the slope begins to slip. Usually, the yield acceleration cannot be calculated directly but be obtained through an iterative analysis. The iterative calculation makes the Newnmak method time-consuming and costly, which results in a huge expense especially for a region-wide assessment. In order to enhance the effectiveness of the Newmark analysis, this study developed a simple method to assess earthquake-induced displacement.
This study includes two main parts. The first part is, based on large amounts of data of slope stability analysis, to develop the relationship between the safety factor (FS) and the soil parameters and to define the relationship between the shape of failure and ky. By means of the developed relationships, we could directly calculate FS and ky based on soil parameters and slope geometry. The second part is to develop a prediction model for Newmark’s displacement using the data of Chi-Chi earthquake. In reality, the slope is a flexible block but it is assumed as a rigid block in Newmark’s method. Therefore, this study uses one-dimensional equivalent linear analysis to account for the influence of flexible slope on the incident motion and access how it modifies the rigid-displacement model. By combining the ky in the first part and the developed model in the second part, it is easily to predict the displacement of earthquake-induced shallow and deep slope failures.
|
author2 |
蔡祁欽 |
author_facet |
蔡祁欽 Yu-Chun Chien 簡佑鈞 |
author |
Yu-Chun Chien 簡佑鈞 |
spellingShingle |
Yu-Chun Chien 簡佑鈞 Displacement-Based Approach for Assessing Earthquake-Induced Shallow and Deep Slope Failures |
author_sort |
Yu-Chun Chien |
title |
Displacement-Based Approach for Assessing Earthquake-Induced Shallow and Deep Slope Failures |
title_short |
Displacement-Based Approach for Assessing Earthquake-Induced Shallow and Deep Slope Failures |
title_full |
Displacement-Based Approach for Assessing Earthquake-Induced Shallow and Deep Slope Failures |
title_fullStr |
Displacement-Based Approach for Assessing Earthquake-Induced Shallow and Deep Slope Failures |
title_full_unstemmed |
Displacement-Based Approach for Assessing Earthquake-Induced Shallow and Deep Slope Failures |
title_sort |
displacement-based approach for assessing earthquake-induced shallow and deep slope failures |
publishDate |
2015 |
url |
http://ndltd.ncl.edu.tw/handle/33667671400602230275 |
work_keys_str_mv |
AT yuchunchien displacementbasedapproachforassessingearthquakeinducedshallowanddeepslopefailures AT jiǎnyòujūn displacementbasedapproachforassessingearthquakeinducedshallowanddeepslopefailures AT yuchunchien biānpōshòuzhènzhīshēncéngyǔqiǎncéngwèiyípòhuàipínggūfāngfǎ AT jiǎnyòujūn biānpōshòuzhènzhīshēncéngyǔqiǎncéngwèiyípòhuàipínggūfāngfǎ |
_version_ |
1718435044379328512 |