Analyzing the shear strength parameters of the Chiu-fen-erh-shan landslide: integrating strong-motion and GPS data to determine the best-fit accelerogram |
| |
| Authors: | Jian-Hong Wu Hung-Ming Lin |
| |
| Institution: | (1) Department of Civil Engineering, National Cheng Kung University, No. 1, University Road, Tainan, Taiwan;(2) Sustainable Environment Research Center, National Cheng Kung University, Tainan, Taiwan;(3) Department of Construction and Facility Management, Leader University, Tainan, Taiwan |
| |
| Abstract: | This study adopts the Chiu-fen-erh-shan landslide as a case study for incorporating comprehensive accelerograph and global
positioning system (GPS) data to determine the best-fit acceleration data for analyzing a rock avalanche. Previous investigations
indicate that the distance from an accelerograph to a landslide site is crucial to determining the best-fit acceleration data
to use in conducting a seismic analysis. Unfortunately, the Chiu-fen-erh-shan landslide and its nearest accelerograph station
are located in different geological zones. Thus, GPS data were compared to the displacements derived from the accelerograms
of nearby monitoring stations to help select the best accelerograph data. This emphasizes that a high density distribution
of accelerographs and GPS installations are essential to acquire the best data for the seismic analysis, especially in complex
geological zones. After applying the best-fit accelerogram to Newmark’s sliding model and an empirical displacement attenuation
formula to back-calculate the shear strength parameters of the sliding surface, a cohesion of 0 kPa and friction angle of
the sliding surface of 24.8° were found for this landslide.
|
| |
| Keywords: | Chiu-fen-erh-shan landslide Chi-Chi earthquake Accelerograph GPS Displacement Newmark |
| 本文献已被 SpringerLink 等数据库收录！ |
|
