A New Slope Stability Analysis Method Based on FEM and Discussion on a Failure Mechanism of a Cut Slope.
-
- XIONG Jie
- 徳島大学工学部後期博士課程
-
- MOCHIZUKI Akitoshi
- 徳島大学工学部
-
- YUMIOKA Hirofumi
- 徳島大学工学部前期博士課程
-
- MIKI Tatsuo
- 徳島大学工学部前期博士課程
Bibliographic Information
- Other Title
-
- FEMを用いた斜面安定解析法と切土斜面の崩壊メカニズムの検討
- FEM オ モチイタ シャメン アンテイ カイセキホウ ト キリツチ シャメン ノ ホウカイ メカニズム ノ ケントウ
Search this article
Abstract
A new slope stability analysis method based on FEM (SS-Method) is presented. Here normal and shear stresses acting on the middle point ‘A’ of an arc of a slip surface within an individual element were calculated by employing the Shape-Matrix technique. In order to evaluate the accuracy of the SS-Method, a “standard slope”, which was assigned a safety factor of unity on the critical slip surface, was utilized. The safety factor of the critical slip surface obtained from the SS-Method was 1.01, verifying the reliability of this method.<BR>Safety factors for three test slopes calculated using the SS-method fell within valves obtained from other popular slope stability analysis methods.<BR>Two slope failures occurred in a cut soft-rock slope under a road bridge foundation. One of which was analyzed with a new approach, where slope stability was estimated by combining both the SS-Method (safety factor on critical slip surface) and FEM-stress method (local safety factor). The failure mechanism is explained as follows: The foundation caused a concentration of stresses near its toe, and subsequently a shearing deformation occurred in the slope due to deterioration of strength after several rainfalls. The slope failures were finally triggered due to a heavy rainfall.<BR>Countermeasures of the slope are also discussed by employing the FEM-stress method. Construction of an anchored framework or a simple frame-work are suggested.
Journal
-
- Landslides
-
Landslides 38 (2), 129-135, 2001
The Japan Landslide Society
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390001204544447360
-
- NII Article ID
- 10013011260
-
- NII Book ID
- AN00332562
-
- ISSN
- 18843956
- 02852926
-
- NDL BIB ID
- 6354261
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed