Graduation Semester and Year

2018

Language

English

Document Type

Dissertation

Degree Name

Doctor of Philosophy in Civil Engineering

Department

Civil Engineering

First Advisor

Nur Yazdani

Abstract

Elevating a residential house appears to be one of the most effective techniques to eliminate or alleviate flood losses. In general, the elevation procedures involve raising a house as well as its typical slab-on-grade (SOG) foundation and supporting it with an additional support system. The unconcerned effects of the drastic changes in support condition could lead to severe structural damages and failure of houses. After elevated, thus, such slabs must be properly supported and retrofitted, for which the available methodology and know-how is almost nonexistent. The fiber reinforced polymer (FRP) application, considered as a promising technique in the rehabilitation of concrete structures, are utilized in this study to improve the structural performance of an elevated SOG. The main objectives of the research is to investigate and evaluate the flexural behavior of a full-scale elevated SOG with low reinforcement ratio and the effect of using externally bonded carbon FRP (CFRP) and glass FRP (GFRP) laminates to retrofit such slabs. The current study includes three distinct phases: experimental investigation of two full-scale slabs subjected to static load, finite element analyses of test slabs to verify with the experimental results, and parametric study to expand the results using validated numerical models. The results show a delay of the crack initiation and propagation, as well as an increase in the ultimate load capacity of 30% over the control with the use of a single layer of CFRP laminates. The experimental and theoretical were found to correlate well in terms of the load-deflection responses, crack development, and modes of failure.

Keywords

ABAQUS, Finite element analysis, FRP composites, One-way slabs, Slab on grade

Disciplines

Civil and Environmental Engineering | Civil Engineering | Engineering

Comments

Degree granted by The University of Texas at Arlington

Download

Share

COinS