Fatigue failure and cracking in high mast poles.

Details

• Alternative Title:
  Project title: Fatigue failure and cracking in high mast poles
• Creators:
  Goyal, Raka ; Dhonde, Hemant B. ; Dawood, Mina
• Corporate Creators:
  University of Houston. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Cracking
  • Pavement cracking
  • Fatigue cracking
  • Street lighting
  • Lighting columns
  • Roads--Lighting--Supports--Cracking--Texas
  • Roads--Lighting--Supports--Fatigue--Texas
• Publication/ Report Number:
  FHWA/TX-12/0-6650-1 ; 0-6650-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Sept. 2010¿Aug. 2011.
• Corporate Publisher:
  University of Houston. Dept. of Civil and Environmental Engineering
• Abstract:
  This report presents the findings of a comprehensive research project to investigate the fatigue ; cracking and failure of galvanized high mast illumination poles (HMIP). Ultrasonic inspection of ; poles throughout the state has revealed the presence of weld toe cracks at the shaft-to-base-plate ; connections of some galvanized poles that the Texas Department of Transportation (TxDOT) ; owns. ; However, the effect of these galvanization-induced cracks on the fatigue life of the poles has not ; been clearly defined. The first phase of this research involved extensive review of published and ; unpublished data, to identify key factors that contribute to galvanization-induced cracking. Best ; fabrication practices to minimize such cracking are recommended. In the second phase, a ; comprehensive reliability analysis of several TxDOT pole configurations was conducted for ; different regions in Texas to predict the fatigue lives of the cracked poles. Critical pole ; configurations and locations are identified to facilitate cost-effective decisions related to ; inspection, repair, and replacement of poles.
  More +
• Format:
  PDF
• Funding:
  0-6650
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24201/dot_24201_DS1.pdf
• File Type:
  [PDF - 2.71 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:a962aab2bc5c6393ac574ba802dd2fc6634e9f752dcfbba4b597242e15a7dd00dd6feab49c262ebf666ef8620fe1372a97f36a4aa489f7b30554e4886b0f2cc8