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Title of Thesis

Performance Behavior of Confined Brick Masonry Buildings under Seismic Demand

Author(s)

Amjad Naseer

Institute/University/Department Details
Department of Civil Engineering / N-W.F.P University of Engineering and Technology, Peshawar
Session
2009
Subject
Civil Engineering
Number of Pages
231
Keywords (Extracted from title, table of contents and abstract of thesis)
Confined, Brick, Masonry, Seismic, Demand, Eurocode, Disintegration, Similitude, Walls, Assemblages, Predominant, Excitations, Cyclic, collapse, Earthquake, Reinforcement

Abstract
Seismic behavior of typical confined brick masonry buildings has been studied. Single and double story reduced scale confined brick masonry building models, representing
typical single and double story residential houses in northern Pakistan, have been tested on simple earthquake simulator. The models have been built at 1:4 reduced scale,
following the laws of complete model similitude and tested by subjecting them to a sequence of excitations. The models were confined according to the requirements of Eurocode 8.
The research work was divided into three distinct phases: testing of prototype masonry materials and assemblages; simulation of reduced scale masonry materials and assemblage; and shaking table test of reduced scale models. Prototype masonry materials and assemblage were tested in compression, diagonal compression and cyclic test
Typical shear failure was observed to be predominant failure mode in both single and double story models. Although, the walls of single story severely damaged, the confining
element was able to prevent them from disintegration. Damage was concentrated at the ground floor in the case of double story model. In-plane walls of ground floor were severely damaged during strong shaking. Horizontal bed joint reinforcement is recommended to connect the tie columns and ground floor masonry walls that will improve the seismic behavior of the ground floor walls. Response modification factor of 3.0 and 2.41 was determined for single and double story models respectively, what is in good correlation with Eurcode spectral amplification factors. The model test results indicate that prototype single and double story buildings of the tested type will resist, with moderate damage an earthquake with peak ground acceleration of 0.4 g and 0.25 g, respectively. The same buildings would resist collapse when subjected to earthquakes up to 1.0 g.

Download Full Thesis
6,752 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 CONTENTS

 

viii
102 KB
2

1

INTRODUCTION

1.1 Introduction

1.2 Aim And Objectives Of The Research Work
1.3 Scope Of Work
1.4 Research Methodolgy
1.5 Report Organization

1
120 KB
3 2 LITERATURE REVIEW

2.1 Introduction

2.2 Properties Of Pakistani Masonry
2.3 Failure Mechanism
2.4 Response Of Confined Masonry During Earthquakes
2.5 Codes /guidelines Recommendations
2.6 Theory Of Structural Model
2.7 Experimental Testing

6
740 KB
4 3 EXPERIMENTAL PROGRAM: MASONRY MATERIALS AND MASONRY ASSEMBLAGE

3.1 Introduction

3.2 Prototype Masonry Test
3.3 Model Masonry
3.4 Comparison Of Mechanical Properties Of Prototype And Model Masonry Assemblage

40
916 KB
5 4 EXPERIMENTAL PROGRAM: SHAKE TABLE TEST

4.1 Introduction

4.2 Typical Pakistani Masonry Building
4.3 Fabrication Of Typical Pakistani Masonry Building
4.4 Pull Out Test
4.5 Design Of Slab And Floor Beam Reinforcement
4.6 Additional Floor Masses
4.7 Earthquake Simulator
4.8 Instrumentations And Data Acquisitions
4.9 Ground Motion Time History
4.10 Testing Procedure

79
1,227 KB
6 5 SHAKE TABLE TEST RESULTS

5.1 Introduction

5.2 Single Story Model Building
5.3 Double Story Model Building
5.4 Seismic Resistance Of Prototype Building
5.5 Comparing Single And Double Story Building

115
632 KB
7 6 CONCLUSION AND RECOMMENDATION

6.1 Summary
6.2 Conclusions And Recommendations
6.3 Future Research Work

151
130 KB
8 7 REFERENCES AND APPENDIX

159


3,678 KB