Repository logo
  • English
  • 中文
Log In
Have you forgotten your password?
  1. Home
  2. College of Engineering / 工學院
  3. Civil Engineering / 土木工程學系
  4. Model Tests of Reinforced Revetments for Debris-Flow Control
 
  • Details

Model Tests of Reinforced Revetments for Debris-Flow Control

Date Issued
2016
Date
2016
Author(s)
Chang, Hsin-Wen
DOI
10.6342/NTU201601238
URI
http://ntur.lib.ntu.edu.tw//handle/246246/278166
Abstract
In this study, a small-scale model test was conducted to simulate the impact of debris flow on reinforced-soil structures. Materials were selected according to similitude laws to simulate the particle size distribution of the material at a debris flow site (Fengchu) and the geosynthetics. During the test, the movement of the materials was recorded by three video cameras. The analyses of the front velocity and mean velocity for specific particles were performed by particle image velocimetry (PIV) and particle tracking velocimetry (PTV). Moreover, a device was set up at the toe of the slope for measuring the impact force from debris flow. The variations in velocity and impact force were studied in terms of different quantity of flow. The mechanic behavior of the barriers (revetments) and comparison between two types of barriers were discussed. In the debris flow simulation test, flows of different quantities were considered. According to the physical test result, the variation in front velocity was not obvious. However, the quantity of flow had influence on the mean velocity. Although the initial mean velocity of large quality flow was slower, the mean velocities of flows with different quantities were almost the same. Regarding for the impact force, the quantity of flow had little influence on the pattern of time history. As the quantity of flow was increased, the maximum impact force increased as well; nevertheless, the impact force per unit area was not increased proportionally to the impact force. It was found that the impact force at the middle was larger than that at the side of the flow. To measure the impact of debris flow on reinforced-soil structures, two types of barrier, wrap-around and glued facings, were taken into consideration. Based on the observation, the glued-facing barrier depressed more at the up-stream side and bulged more at the downstream side than the wrap-around barrier. After uncovering the embedded layer, the foundation of wrap-around barrier had significant lateral deformation at the downside; while the glued-facing barrier had small overall sideway movement. Both barriers did not have rupture of reinforcement or soil washed out, indicating the good function of the GRS barriers.
Subjects
Model test
GRS barrier
debris flow
impact force
scouring
Type
thesis
File(s)
Loading...
Thumbnail Image
Name

ntu-105-R03521102-1.pdf

Size

23.32 KB

Format

Adobe PDF

Checksum

(MD5):ec6e2c2eb535ed4ad6cf1acb59b677e2

臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of “NTU Repository” with “Academic Hub” to form NTU Scholars.

總館學科館員 (Main Library)
醫學圖書館學科館員 (Medical Library)
社會科學院辜振甫紀念圖書館學科館員 (Social Sciences Library)

開放取用是從使用者角度提升資訊取用性的社會運動,應用在學術研究上是透過將研究著作公開供使用者自由取閱,以促進學術傳播及因應期刊訂購費用逐年攀升。同時可加速研究發展、提升研究影響力,NTU Scholars即為本校的開放取用典藏(OA Archive)平台。(點選深入了解OA)

  • 請確認所上傳的全文是原創的內容,若該文件包含部分內容的版權非匯入者所有,或由第三方贊助與合作完成,請確認該版權所有者及第三方同意提供此授權。
    Please represent that the submission is your original work, and that you have the right to grant the rights to upload.
  • 若欲上傳已出版的全文電子檔,可使用Open policy finder網站查詢,以確認出版單位之版權政策。
    Please use Open policy finder to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement.
  • 網站簡介 (Quickstart Guide)
  • 使用手冊 (Instruction Manual)
  • 線上預約服務 (Booking Service)
  • 方案一:臺灣大學計算機中心帳號登入
    (With C&INC Email Account)
  • 方案二:ORCID帳號登入 (With ORCID)
  • 方案一:定期更新ORCID者,以ID匯入 (Search for identifier (ORCID))
  • 方案二:自行建檔 (Default mode Submission)
  • 方案三:學科館員協助匯入 (Email worklist to subject librarians)

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science