Seismic performance of square RC bridge columns under combined loading including torsion with low shear.

Details

• Creators:
  Li, Qian ; Belarbi, Abdeldjelil
• Corporate Creators:
  Missouri University of Science and Technology. Center for Transportation Infrastructure and Safety
• Corporate Contributors:
  United States. Dept. of Transportation. Research and Innovative Technology Administration
• Subject/TRT Terms:
  • Design methods
  • Earthquake resistant design
  • Base isolation
  • Columns
  • Torsion
  • Shear properties
• Publication/ Report Number:
  NUTC R231
• Resource Type:
  Tech Report
• Geographical Coverage:
  Missouri
• OCLC Number:
  683271023
• Edition:
  Final.
• Corporate Publisher:
  Missouri University of Science and Technology. Center for Transportation Infrastructure and Safety
• NTL Classification:
  NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures ; NTL-HIGHWAY/ROAD TRANSPORTATION-Soils and Geology
• Abstract:
  During earthquake excitations, reinforced concrete bridge columns can be subjected to a combination of axial load, shear force, ; flexural moments, and torsional moments. The torsional moment can be much more significant in columns of bridges that are skewed, ; curved, have unequal spans, or unequal column heights. Combined loading including torsion can result in complex flexural and shear ; failure of these bridge columns. This paper presents an experimental study on the seismic behavior of square reinforced concrete ; columns under combined cyclic flexural and torsional moments. The columns in this study were designed with an aspect ratio of six ; and tested under various loading conditions: cyclic flexural moment and shear force, cyclic pure torsion, and combined cyclic shear ; force, bending, and torsional moments. Test results reveal that (1) the flexural and torsional capacity is decreased due to the effect of ; combined loading, (2) the failure modes and deformation characteristics are changed, and (3) the damage zone tends to move upwards ; from the typical flexural plastic hinge zone due to the effect of additional torsional moment. The effects of combined loading on the ; hysteretic loading-displacement response, and damage characteristics are discussed.
• Format:
  PDF
• Funding:
  DTRT06-G-0014
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17486/dot_17486_DS1.pdf
• File Type:
  [PDF - 4.72 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:45e34478eff0cd55cc6eb5734b138529702ba8537aabdeabde4975a6955eb8c5