| Title | Seismic Wave Monitoring and Evaluation of Liquefaction Potential at Harbor Areas (2/3) |
| Dept | Transportation Technology and Information Division |
| Year | 2004 |
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| Price | |
| Summary | Published in April 2004 IOT SERIAL No. 93-66-799, 310pp. Taiwan is located in the western branch of the Cum-Pacific Seismic Belt therefore, earthquakes occurred frequently. Under strong earthquake shaking, the liquefaction of sandy soils of alluvium and reclaimed lands in western coastal area of Taiwan may occur and may cause damages for coastal and harbor facilities at this area. Hence, this project is divided into two subprojects: The first subproject is “Seismic Wave and Excess Porewater Pressure Monitoring at Harbor Areas.” In this study, the ground surfaced and embedded seismographers and piezometers were installed in Taichung Harbor and Taipei Harbor area. By combining with the monitoring results of seismic waves and excess porewater pressures in ground during earthquakes, the seismic response and liquefaction behavior of soils in the concerned area mentioned above were examined. The second subproject is “Local Models of Liquefaction and the Risk of Liquefaction at Harbor Areas.” In this study, We collected 174 CPT data sets and 288 SPT data sets of liquefaction and non-liquefaction cases from Chi-Chi earthquake. The Logistic regression model and the Discriminant model of the statistic classification method applied on these data. Several local models for evaluating liquefaction potential using CPT data and SPT data were established in this study. The relationship of probability of liquefaction (PL) and factor of safety against liquefaction (Fs) were also investigated. As a result, ground subsidence and liquefaction potential for the Taichung Harbor and Taipei Harbor area during earthquakes were also analyzed. |
| Post date | 2005/08/15 |
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