Seismic Protection Devices Study for the W. Marquam Interchange–Marquam Bridge Section

Details

• Creators:
  Griffith, Andrew ; Normand, Wayne ; Starkey, Steve
• Corporate Creators:
  Oregon. Department of Transportation
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Bridge Piers Bridges Seismicity Shock (Mechanics)
• Resource Type:
  Research Paper
• Geographical Coverage:
  United States
• Corporate Publisher:
  Oregon. Department of Transportation. Research Section
• Abstract:
  This report summarizes the seismic retrofit of the Marquam Bridge in Portland, Oregon with proprietary bearing/restraint and shock transmission devices. The retrofit was completed in 1995. The devices were supplied by FIP Industries, Inc. and included: • Bearing Restraint Devices (including shock transmission components); four devices at Piers #2 and #5; • Bearing Restraint Devices: four devices at Piers #3 and #4; and • Shock Transmission Devices: two on each side of Panel Point L13. The bearing/restraint devices replaced existing bearings and required special modifications to the bridge piers and truss to accommodate jacking operations and bearing installation. After the installation was complete in 1995, Teflon shavings were discovered in the guide bar region in each of the new bearings on Pier #2 and Pier #5. The shavings were the result of the Teflon sliding element being extruded into the guide bar region. Since then, further monitoring has confirmed that the Teflon extrusion process has diminished over time. After almost five years of service, the other devices are performing satisfactorily.
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:fb91f44d11f6ffcca4de40e6e57f349f43709d8e4f1d8799c4803240f1c81703308aebd32e5aaf7fe6d049ef2d429bdc007801dbde3ff8e8737878d134e17d00
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/14406/dot_14406_DS1.pdf
• File Type:
  [PDF - 3.80 MB ]