A Study on the Relationship between Arias Intensity and Earthquake-induced Slope Displacement

• Main Authors: Hsuan-HoWang, 王宣賀
• Other Authors: Ching Hung
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/2djurj

碩士 === 國立成功大學 === 土木工程學系 === 106 === Earthquake-induced landslides are damaging hazards. A way to mitigate landslide damage, having a better understanding of slope movements induced by earthquakes is pivotal. The energy-based Arias Intensity has been recognized as a useful measure in earthquake-induced slope stability. Finite element analysis has been a practical and effective tool to analyze the dynamic process of landslides. The study utilized a series of seismic records and performed numerical simulations to study the relationship between Arias Intensity and earthquake-induced slope displacement. The displacements in the dynamic process were examined and the relationships between Arias Intensity and displacements of slopes, considering different angles of slopes (20 o, 30 o, and 45o), are presented. The Tsaoling model and Aso-bridge model were utilized as verification models. The results indicated that the range of the Arias Intensity and the plastic flow rule have influences on the relationships between Arias Intensity and normalized earthquake-induced slope displacement, while the angles of slopes show little effect. The range of the Arias Intensity should be considered in any usage of published empirical relationships. The plastic flow rule should be taken into account when conducting simulations. This study aims to provide better understanding in the relationships between Arias Intensity and earthquake-induced slope displacement and hopes to provide insight for any further usages of empirical relationships.