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:
  • Reinforced concrete bridges
  • Bridge piers
  • Bridge design
  • Load factor
  • Shear strength
  • Earthquake resistant design
  • Serviceability
  • Retrofitting
  • Performance measurement
  • Hinges
• 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.
  More +
• Format:
  PDF
• Funding:
  C1883
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27416/dot_27416_DS1.pdf
• File Type:
  [PDF - 5.20 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:ca196210fe88e37761c81c06361babc45e0d05e87c9b291466707f3a12758b76