Seismic Performance Screening and Evaluation for Embankments on Liquefiable Foundation Soils
This paper proposes a framework for screening and evaluating seismic performance of river earth embankments on liquefiable foundation soils. The framework is executed in the order of simplest screening by soil liquefaction potential map to preliminary and detailed evaluation of seismic performance o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/12/6/221 |
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| author | Chih-Chieh Lu Kuan-Yu Chen Yun-Ta Cheng Yu-Hung Han |
| author_facet | Chih-Chieh Lu Kuan-Yu Chen Yun-Ta Cheng Yu-Hung Han |
| author_sort | Chih-Chieh Lu |
| collection | DOAJ |
| description | This paper proposes a framework for screening and evaluating seismic performance of river earth embankments on liquefiable foundation soils. The framework is executed in the order of simplest screening by soil liquefaction potential map to preliminary and detailed evaluation of seismic performance of embankment according to the sufficiency of data and the complexity and accuracy of the methods. The seismic performances of embankments are classified into four levels based on the seismic-induced crest settlement. The method used for preliminary evaluation is based only on the factors of safety of foundation soils against liquefaction and the embankment slope against sliding. The static softening method (SSM) and dynamic effective stress method (DESM) are suggested for detailed evaluation of seismic performance. SSM is a static FDM or FEM analysis for estimating liquefaction-induced settlement by weakening the strength of the liquefied foundation soil under the action of the self-weight of the embankment. However, DESM is a dynamic history analysis for estimating liquefaction-induced settlement by simulating the generation and dissipation of pore water pressure in the liquefaction process of foundation soils under the action of the self-weight of the soil embankment and its seismic inertial force. The damaged embankment of the Maoluo River in the 1999 Chi-Chi earthquake was used as a case to demonstrate the feasibility of this framework. The results showed that the simpler the adopted method is, the more conservative the estimated settlement. |
| first_indexed | 2024-03-09T23:42:29Z |
| format | Article |
| id | doaj.art-0919a07d08af4ce483b16cfa34df0ddb |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-09T23:42:29Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-0919a07d08af4ce483b16cfa34df0ddb2023-11-23T16:49:38ZengMDPI AGGeosciences2076-32632022-05-0112622110.3390/geosciences12060221Seismic Performance Screening and Evaluation for Embankments on Liquefiable Foundation SoilsChih-Chieh Lu0Kuan-Yu Chen1Yun-Ta Cheng2Yu-Hung Han3National Center for Research on Earthquake Engineering, Taipei 106219, TaiwanNational Center for Research on Earthquake Engineering, Taipei 106219, TaiwanWater Resources Planning Institute, Water Resources Agency, Ministry of Economic Affairs, Taichung 413001, TaiwanWater Resources Planning Institute, Water Resources Agency, Ministry of Economic Affairs, Taichung 413001, TaiwanThis paper proposes a framework for screening and evaluating seismic performance of river earth embankments on liquefiable foundation soils. The framework is executed in the order of simplest screening by soil liquefaction potential map to preliminary and detailed evaluation of seismic performance of embankment according to the sufficiency of data and the complexity and accuracy of the methods. The seismic performances of embankments are classified into four levels based on the seismic-induced crest settlement. The method used for preliminary evaluation is based only on the factors of safety of foundation soils against liquefaction and the embankment slope against sliding. The static softening method (SSM) and dynamic effective stress method (DESM) are suggested for detailed evaluation of seismic performance. SSM is a static FDM or FEM analysis for estimating liquefaction-induced settlement by weakening the strength of the liquefied foundation soil under the action of the self-weight of the embankment. However, DESM is a dynamic history analysis for estimating liquefaction-induced settlement by simulating the generation and dissipation of pore water pressure in the liquefaction process of foundation soils under the action of the self-weight of the soil embankment and its seismic inertial force. The damaged embankment of the Maoluo River in the 1999 Chi-Chi earthquake was used as a case to demonstrate the feasibility of this framework. The results showed that the simpler the adopted method is, the more conservative the estimated settlement.https://www.mdpi.com/2076-3263/12/6/221embankmentsoil liquefactionseismic performance |
| spellingShingle | Chih-Chieh Lu Kuan-Yu Chen Yun-Ta Cheng Yu-Hung Han Seismic Performance Screening and Evaluation for Embankments on Liquefiable Foundation Soils Geosciences embankment soil liquefaction seismic performance |
| title | Seismic Performance Screening and Evaluation for Embankments on Liquefiable Foundation Soils |
| title_full | Seismic Performance Screening and Evaluation for Embankments on Liquefiable Foundation Soils |
| title_fullStr | Seismic Performance Screening and Evaluation for Embankments on Liquefiable Foundation Soils |
| title_full_unstemmed | Seismic Performance Screening and Evaluation for Embankments on Liquefiable Foundation Soils |
| title_short | Seismic Performance Screening and Evaluation for Embankments on Liquefiable Foundation Soils |
| title_sort | seismic performance screening and evaluation for embankments on liquefiable foundation soils |
| topic | embankment soil liquefaction seismic performance |
| url | https://www.mdpi.com/2076-3263/12/6/221 |
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