Performance and capacity assessment of reinforced concrete bridge piers considering the current load and resistance factor design provisions and plastic hinge length in Kansas.

Details

• Creators:
  Esmaeily, Asad ; Shirmohammadi, Fatemeh
• Corporate Creators:
  Kansas State University. Transportation Center
• Subject/TRT Terms:
  Bridge Design Bridge Piers Earthquake Resistant Design Hinges Load Factor Performance Measurement Reinforced Concrete Bridges Retrofitting Serviceability Shear Strength
• Publication/ Report Number:
  K-TRAN: KSU-11-5
• Resource Type:
  Tech Report
• Geographical Coverage:
  Kansas
• Corporate Publisher:
  Kansas. Dept. of Transportation. Bureau of Materials & Research
• Abstract:
  Kansas Department of Transportation (KDOT) has implemented the new AASHTO-LRFD provisions in the state specific
  
  LRFD design procedure (KDOT LRFD). Most of the existing bridges constructed before the new provisions, have been designed
  
  based on the old provisions. In this study, these changes have been assessed based on the latest pertinent research, and two
  
  representative bridges, representing state bridges designed and constructed based on the new and old code versions have been
  
  studied and their performance were analyzed considering their real performance and new code revisions.
  
  In general, the two representative bridges provided by KDOT for this study, can safely address the demanded loads
  
  considering their actual strength and bridge structural-redundancy and load redistribution process. So, there is no immediate
  
  concern in terms of serviceability or collapse of these bridges under demanded loads, including the extreme vehicular impact load.
  
  However, the calculated shear strength of most of the columns designed and constructed based on the old codes may not be enough
  
  considering the new vehicular impact load required by the new code revisions.
  
  While no immediate action seems to be necessary in terms of serviceability and safety of these bridges, engineering
  
  judgment and a realistic case-based performance assessment is needed to decide if enhancement of the shear strength and the
  
  amount of lateral reinforcement within the plastic hinge length is necessary. Proper methods to retrofit these types of columns as
  
  detailed in Chapter 4 can be used, once a decision is made for a case to implement the aforesaid enhancement. The case-based
  
  appropriate retrofitting method can be specified for each case considering the column geometry, service load, reinforcement details
  
  and material properties.
  
  
• Format:
  PDF
• Funding:
  C1883
• Collection(s):
  University Transportation Centers US Transportation Collection
• Main Document Checksum:
  urn:sha256:ca196210fe88e37761c81c06361babc45e0d05e87c9b291466707f3a12758b76
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27416/dot_27416_DS1.pdf
• File Type:
  [PDF - 5.20 MB ]