Post weld and epoxy anchorage variations for w-beam guardrail attached to low-rill culverts.

Details

• Creators:
  Price, Craig W. ; Rosenbaugh, Scott K. ; Faller, Ronald K. ; Sicking, Dean L. ; Reid, John D. ; Bielenberg, Robert W.
• Corporate Creators:
  Midwest Roadside Safety Facility
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Culverts
  • Guardrails
  • Anchorages
  • Fillet welds
  • Impact tests
  • Weld strength
  • Posts
• Publication/ Report Number:
  TRP-03-278-13
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Midwest States Regional Pooled Fund Program
• Abstract:
  The research effort consisted of two objectives for dealing with alterations to the W-beam guardrail system developed ; for attachment to the top of low-fill culverts. This effort included: (1) investigation of an alternative weld detail to simplify ; the three-pass fillet weld on the front flange of the post and (2) development of an epoxy anchorage option as opposed to ; through-bolting. These system modifications were evaluated through four dynamic, bogie tests conducted under the same ; impact conditions as the original system component testing. ; Based on a survey of the Pooled Fund member states, two different single-pass weld details were evaluated as a ; replacement for the 3-pass fillet weld used on the front flange of the post in the original system. However, both single-pass ; welds resulted in large tears in the base plate adjacent to the front flange. The 3-pass weld detail was successful with a post ; assembly fabricated from 50 ksi (345 MPa) steel materials. Thus, the 3-pass weld will continue to be recommended for use, ; while the post and base plate may be composed of ASTM A36 or Grade 50 steel parts. ; Anchor pullout was encountered for an embedment depth of 6 in. (152 mm), while an 8-in. (203-mm) embedment ; showed no signs of anchor failure. Thus, an 8 in. (203 mm) minimum embedment depth was recommended for the epoxied ; anchorage design.
  More +
• Format:
  PDF
• Funding:
  TPF-5(193) Supplement Nos. 34 and 47
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26467/dot_26467_DS1.pdf
• File Type:
  [PDF - 5.10 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:2f6a3ca858ee0204c0ecbe7b923b3a1f4a9f0cba86385fc3e6829ffac52d1e2ec2beec5ecbcf39e601201d5076b2563b2a1857a78ac9cfd506a6874011db76fb