Probabilistic Wind Speed Model for Local Data at All Counties in Kansas

The Kansas Department of Transportation (KDOT) has around 450 older aluminum and steel truss structures that support highway signs and traffic signals. These structures are made of cantilevered, butterfly and non-cantilevered configurations with a number of fatigue-prone details. It is very important to examine such structures to evaluate their performance with time in terms of remaining fatigue life. Of special interest is to perform modeling, analysis and structural assessment that reveal nominal stress range levels needed to determine if the components/connection will have pseudo-infinite life and if not estimate their approximate remaining life. Another issue of interest is to guide the inspectors to look for critical spots that may have developed fatigue cracks that otherwise would have been difficult to detect. The PI has successfully completed and delivered a software that predicts the remaining fatigue life for non-cantilevered sign trusses. The software has been applied by KDOT showing that it is capable of predicting existing fatigue cracks in such ancillary structures. On the other hand, the principal inspector (PI) is currently working on a follow up project to develop a software to predict the remaining fatigue life of steel cantilever and butterfly sign structures. However, the current deterministic wind model is limited to data between 1975 and 2019. This wind model will soon be outdated and will not be possible to extend into the future. In addition, the wind data in these two studies are limited to 8 cities inside Kansas and do not lend themselves to be applicable to local counties in the entire state.

Language

• English

Project

• Status: Active
• Funding: $39908
• Contract Numbers:

  K-TRAN: KSU-21-6

  RE-0811-01

  C2166

• Sponsor Organizations:

  Kansas Department of Transportation

  Eisenhower State Office Building
  700 SW Harrison Street
  Topeka, KS  United States  66603-3754
• Performing Organizations:

  Kansas State University Transportation Center

  Kansas State University
  Department of Civil Engineering
  Manhattan, KS  United States  66506
• Principal Investigators:

  Rasheed, Hayder

• Start Date: 20200809
• Expected Completion Date: 20221231
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Fatigue strength; Predictive models; Service life; Speed; Structural analysis; Traffic signals; Traffic signs; Trusses; Wind
• Identifier Terms: Kansas Department of Transportation
• Geographic Terms: Kansas
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01760099
• Record Type: Research project
• Source Agency: Kansas Department of Transportation
• Contract Numbers: K-TRAN: KSU-21-6, RE-0811-01, C2166
• Files: RIP, STATEDOT
• Created Date: Dec 15 2020 2:44PM