Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Research Journal of Environmental Sciences
Year: 2011  |  Volume: 5  |  Issue: 5  |  Page No.: 444 - 460

Experimental Study of Cantilever Failure in the Upper Part of Cohesive Riverbanks

A. Samadi, M.H. Davoudi and E. Amiri-Tokaldany    

Abstract: With regard to many ambiguities existed on different types of cantilever failure in composite riverbanks and field study problems of this type of bank erosion, this phenomenon is not widely considered by other researches. The aim of this research was to investigate the experimental study of cantilever failure using data obtained from a field study in eroded banks of Kordan River. For this purpose, we used two samples of susceptible soil which were eligible to form overhanging block in riverbanks, in physical model tests. The physical, chemical and mechanical characteristics of those samples were previously determined via various tests. Accordingly, a soil block with optimum moisture contents and different densities has artificially been formed and consequently, certain depths of block are undermined in certain time steps. Then, the stability of overhanging block was assessed in each step. Finally, the failure pattern and related mechanism of cantilever failure was provided based on continuous images taken from deformations of soil block. Experimental results show that at least for our laboratory study conditions, the dominant failure mechanism is a toppling and this finding is in accordance with overhanging failure pattern, observed in Kordan Riverbanks. Also, failure mechanism in Cohesive Soil (CL) was progressive and accompanied with tension crack development. But in Loess Material (ML), the failure mechanism was momentary and deformations in upper part of soil block were not observed.

Cited References   |    Fulltext    |   Related Articles   |   Back
 
 
   
 
 
 
  Related Articles

 
 
 
 
 
 
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility