On Liquefaction Resistance of Sands/Silts in Kaohsiung
2018
Hochschulschrift
Zugriff:
106
The coastal plain in western Taiwan is belonging to an alluvial plain, and the soil of its alluvium is mostly from the foothills belt in the central mountainous area of southern Taiwan, their soils can be mostly sandy shale and slate. The investigation from the previously studies found that the soils in Kaohsiung are mainly composed of slate, shale, quartz, low-plastic clay, silt, silty sand and so on. It can be found from the past earthquake cases that the soil liquefaction in Tainan and Kaohsiung is extremely easy to occur due to earthquakes. Subsequently soil subsidence or insufficient bearing capacity causes damage to the structure above the soil or reduces its functionality. In this study, the liquefaction potential index LPI is also analyzed with drilling data from Sanmin District, Lingya District and Xinxing District of Aihe River. The results showed that the LPI value of the liquefaction potential index of soil with high fine content was much lower than that of low fine content soil. This also shows that the effect of high fines content on liquefaction resistance is smaller than that of low fines. In addition, this paper also adds different fine content (FC=0%, FC=60%) to Kaohsiung Liouguei sand and controls different relative densities (Dr=30%, 40%, 50%, 60%, 70%, 80%, 90%) Conducted cyclic and static triaxial undrained tests, and tried to explore the effect of fine content on soil liquefaction resistance in Kaohsiung area. The static triaxial test results show that when the fine content is increased, the axial stress in the failure will be reduced, and when the fine content is 0%, the pore water pressure changes greatly. The results of the cyclic triaxial test show that the cyclic stress ratio (CSR) and cyclic resistance ratio (CRR) decrease as the fine content increases.
Titel: |
On Liquefaction Resistance of Sands/Silts in Kaohsiung
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Autor/in / Beteiligte Person: | Zhang,Zhi-Hao ; 張智皓 |
Link: | |
Veröffentlichung: | 2018 |
Medientyp: | Hochschulschrift |
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