Health assessment of the slopes along the roads introducing the long-term degradation concept

• YAMAMOTO Tsuyoshi

  Kinki Regional Development Bureau, Ministry of Land, Infrastructure,Transport and Tourism

• NAKAI Takumi

  Earthtech Toyo corporation

• MARUKI Yoshifumi

  Earthtech Toyo corporation

• KODAKA Takeshi

  Department of Civil Engineering, Meijo University

• KISHIDA Kiyoshi

  Graduate school of Engineering, Kyoto University

• OHNISHI Yuzo

  Graduate school of Engineering, Kyoto University

Bibliographic Information

Other Title

• 長期劣化の概念を導入した道路法面の健全性評価手法の提案

Abstract

Recently the efficient/effective way to maintain the performance of the slopes along the roads has been required due to the limited budget for the construction. For the effective maintenance of the slopes, it is important to understand the failure mechanism of the slopes and to evaluate the middle/long term stability of the slopes properly. However, the following two points have not been clarified to make a decision systematically for the timing of the reinforcement of the slopes: 1) the factors and/or mechanisms which cause the decrease of performance and 2) which parameters should be used to evaluate the performance of the slopes. In this study, the significant decrease of the permeability at the toe of the slope and decrease of the strength caused by the cyclic wet/dry environment were assumed to be one of the main factors which cause the decrease of the performance of the slopes in the long term for the fill and cut land, respectively. Since the groundwater inside of the slope and slope stability are related closely, the coupled stress-flow simulations by FEM were performed to evaluate the long term stability and/or performance of the slopes. The proposed method in this study can be used for the health assessment and asset management of the slopes along the loads.

Journal

• Japanese Geotechnical Journal

  Japanese Geotechnical Journal 4 (1), 21-33, 2009

  The Japanese Geotechnical Society

Keywords

• road slope
• asset management
• health assessment
• unsaturated seepage flow coupled analysis
• FEM

Details

• CRID: 1390282680234125440
• NII Article ID: 130004482779
• DOI: 10.3208/jgs.4.21
• ISSN: 18806341
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed