Problem Statement and Motivation

plantcitybusinessUrban and Civil

Nov 26, 2013 (3 years and 10 months ago)

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Problem Statement and Motivation

Key Achievements and Future Goals

Technical Approach

Mohsen

A.
Issa
, Ph.D., P.E., S.E., FACI, Department of Civil and Materials Engineering

Ph.D

Student:
Rajai

Alrousan



Worldwide repairing of aging infrastructure became necessary as the
structural elements cease to provide satisfactory strength and
serviceability, etc.



Sudden failures (brittle) of RC columns and beams, are considered as
the most disastrous failure modes that occur with no advance warning
of tribulation.



Use of CFRP
-
composites can provide substantial enhancements in
the beams shear strength and column ultimate capacity.



It is very beneficial and crucial to provide rationalized models that
consider the concrete and structure nonlinearities.


The study showed that the CFRP
-
composites is a very effective
strengthening/repair system that provide substantial enhancements in
the behaviors of beams and columns.


Guidelines and preliminary models were proposed to predict the shear
strength of RC beams and ultimate strength of columns strengthened
with CFRP
-
composites.


Various repair projects of beams and columns were implemented
employing the recommendations of this research.


The current work is focusing onto rationalizing the proposed
preliminary models to be applicable for any CFRP
-
composite
configuration and concrete strength.


Fabrication of reinforced concrete (RC) beams and columns and
testing their behaviors with and without CFRP
-
composites.



Performing nonlinear finite element analysis (FEA) to simulate the
response of the beams and columns.



Calibration and validation of the FEA models.



Expansion of the FEA to study additional critical issues related to the
beams shear strength and ultimate strength of columns.



Use of the experimental and FEA results to provide rational models
that predict the beam shear strength and column ultimate capacity
based on the configuration of CFRP composites.