- The document discusses retrofitting an existing multi-story reinforced concrete building using carbon fiber reinforced polymer against earthquake effects. - The objectives are to analyze and design the building against earthquake loads, identify failing beams and columns under increased seismic loads, calculate their required strengths, and retrofit with FRP composites. - The scope is an 8-story RC building in seismic zone 2B designed using ETABS software. It will be reanalyzed in zone 3 and deficient members strengthened with carbon fiber using Sika Carbodur software.

1. MINISTRY OF EDUCATION
TECHNOLOGICAL UNIVERSITY
(TOUNGOO)
DEPARTMENT OF CIVIL ENGINEERING
RETROFITTING OF MULTI-STORY RC BUILDING
USING CFRPAGAINST EARTHQUAKE EFFECT
Title Defence
(21.2.2020)
Supervised by
Daw Zin Mar Thet
Presented by
Ma May Thansin Nway
VI.C-2

2. OUTLINE OF PRESENTATION
• Introduction
• Objective
• Scope
• Flow Chart

3. INTRODUCTION
• Among the nature hazards, earthquakes have the potential for causing the greatest
damages to structures.
• Beams and columns, being the lateral load and vertical load resisting members in
RC structure are particularly vulnerable to failures during earthquakes.
• Seismic retrofitting is an effective method of reducing the risks for existing
seismically deficient structure.
• The retrofit process consist of a variety of treatments, including; preservation,
rehabilitation, restoration and reconstruction.

4. Types of Member Level Retrofit

5. CONTINUED;
• Fiber reinforced polymer (FRP) materials increase the confinement of
column and flexural and shear strengthening of beams.
• FRP materials are lightweight, non-corrosive, non-magnetic and exhibit
high tensile strength.
• A fiber reinforced polymer system consists of fibers typically made of
carbon, glass, or aramid and a polymer adhesive that can be an epoxy,
polyester, or vinyl-ester.

6. CONTINUED;
• Carbon fiber is flexible and can be made
to contact the surface tightly for a high
degree of confinement due to its high
strength and high modules of elasticity.
• Effective use of carbon fiber reinforced
polymer could significantly increase the
life of structures, minimize the
maintenance requirements and take short
construction period.

7. Concrete Beam and Column Wrapped with CFRP

8. OBJECTIVES
• To analyze and design of multi-story reinforced concrete building
against earthquake effect.
• To pick up the failure beams and columns on RC building with
increasing seismic loads.
• To calculate strength for failure beams and columns.
• To retrofit with FRP composite materials in order to obtain the
necessary strength of beams and columns.

9. SCOPE
• The proposed building is eight-story reinforced concrete building.
• It is located in seismic zone 2B originally and is designed and analyzed
for this zone with ACI 318-05 by using ETABS software.
• Required seismic load data is considered base on UBC 1997 code.
• The structure is considered prone to higher seismic risk and is analyzed
in seismic zone 3.
• Strengthening of deficient beams and columns are made by the use of
Sika Carbodur Calculation software.
• The carbon fiber is used in strengthening for the proposed building.

10. FLOW CHART
Start
Literature Review
Analysis and Design of Proposed Structure
in Zone 2B by using ETABS software
Analysis and Design of Proposed Structure
in Zone 3 by using ETABS software
Pick up the deficient Beams and Columns
Retrofit with CFRP by using Sika
Carbodur software
Discussion and Conclusion
Stability Checking

11. TENTATIVE IMPLEMENTATION PROGRAM
• Applied software – ETABS, Sika Carbodur Calculation Software
• The earthquake analysis method used in the study – Equivalent Static Analysis

12. THANK YOU
FOR YOUR ATTENTION!