Doctoral Dissertations

Xiangdong Liu

Keywords and Phrases

Bond-slip

Abstract

"This dissertation consists of five papers, which presents the results of research on the application of FRP composites on the strengthening steel bridge structures. In particular, the work focuses on both rehabilitation of steel bridge girders (flexural members), and steel bridge columns (compression members) with FRP composite materials.

The first paper focuses on the flexural steel member strengthening. Based on the experimental results, it is clear that an increase in stiffness and ultimate load capacity of corroded steel members can be achieved from the application of CFRP laminates to the tension flange of corroded steel members. Peel off of FRP laminates was the observed failure mode of the retrofitted beams.

The second through fifth papers investigate the feasibility of retrofitting of compression loaded steel members using FRP composite pipes filled with expansive light-weight concrete. First, a high-expansion light-weight concrete was investigated. Second, the local bond-slip relationship between steel and this type of concrete was developed. Finally, a FRP retrofit method was proposed for corroded steel bridge columns, and deficient steel columns were strengthened using this retrofit technology. Test results indicated that a restoration of ultimate load capacity of a deficient steel column with the proposed FRP retrofit technology is attainable. Also design guidelines were developed for the retrofit of stocky and slender columns."--Abstract, page iv.

Advisor(s)

Nanni, Antonio
Silva, Pedro Franco

Committee Member(s)

Myers, John
LaBoube, Roger A.
Pottinger, Hardy J., 1944-

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

Ph. D. in Civil Engineering

Sponsor(s)

Federal Railroad Administration
University of Missouri--Rolla. Center for Infrastructure Engineering Studies

Publisher

University of Missouri--Rolla

Publication Date

Fall 2003

Journal article titles appearing in thesis/dissertation

  • Rehabilitation of steel bridge girders with FRP composite members
  • FRP confined expansive light-weight concrete
  • Local bond-slip relationship between smooth steel bar and FRP confined expansive light-weight concrete
  • Rehabilitation of steel bridge columns with FRP composite materials
  • Rehabilitation of compression steel members using FRP pipes filled with non-expansive and expansive light-weight concrete

Pagination

xvi, 170 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2003 Xiangdong Liu, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type

text

Language

English

Subject Headings

Iron and steel bridges -- Maintenance and repairFiber-reinforced plasticsReinforced concrete constructionExpansive concreteComposite materials

Thesis Number

T 8363

Print OCLC #

56343372

Electronic OCLC #

905904065

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