MEDIAN DIKE IMPACT EVALUATION: SENSITIVITY ANALYSIS

AN IMPACT SENSITIVITY ANALYSIS WAS PERFORMED ON EARTHEN DRAINAGE DIKES THAT ARE CONSTRUCTED IN THE MEDIAN OF DIVIDED HIGHWAYS PERPENDICULAR TO THE ROADWAY. SIX PARAMETERS ARE EXAMINED: APPROACH VELOCITY, APPROACH ANGLE, DIKE LATERAL IMPACT POSITION, DIKE APPROACH SLOPE, SOIL TYPE, AND MEDIAN PROFILE. RESULTS ARE EVALUATED BY COMPARING MAXIMUM VALUES OF ACCELERATION, INCREMENTAL VELOCITY CHANGE, AND CENTER-OF- GRAVITY HEIGHT. DYNAMIC VARIABLE DATA ARE PRESENTED FOR SELECTED CASES. THE SIMULATION PROGRAM IS DESCRIBED ALONG WITH THE MODIFICATIONS NECESSARY FOR SIMULATING TRAVEL OVER SOFT SOIL (A COMMON CONDITION IN DRAINAGE CONTROL AREAS). CONCLUSIONS INDICATE THE PROBABLE UNSAFE CHARACTER OF THE CURRENT DIKE STANDARD. /AUTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrr/1972/386/386-0011.pdf
• Supplemental Notes:
  • Sponsored by Committee on Traffic Safety Barriers and Sign, Signal and Lighting Supports. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Dunlap, Duane F
  • Grote, Philip
• Conference:
  • 51st Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1972-1-17 to 1972-1-21
• Publication Date: 1972

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 111-122
• Monograph Title: Traffic safety barriers, lighting supports and dike slopes
• Serial:
  • Highway Research Record
  • Issue Number: 386
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Center of gravity; Crash tests; Crashes; Dikes; Medians; Simulation; Soft soils; Testing; Velocity
• Subject Areas: Design; Highways; Marine Transportation; Research;

Filing Info

• Accession Number: 00203662
• Record Type: Publication
• Report/Paper Numbers: No 386
• Files: TRIS, TRB
• Created Date: Oct 9 1972 12:00AM