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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1418

Title: USE OF COMPOSITE CONCRTE SLAB SYSTEM USING HOLLOW BLOCKS AND PRECAST SLAB/BEAM MEMBER
Authors: Merid, Belay
Advisors: Adil Zekaria (Dr-Ing)
Copyright: 2004
Date Added: 14-Oct-2008
Publisher: Addis Ababa University
Abstract: Table of Content Pages Acknowledgement I Abstract II List of Symbols III List of Figures V List of Tables VI 1. Introduction 1 1.1. General 1 1.2. Objective and Scope of the Study 2 2. Size of Composite element 3 2.1. Determination of size of precast element 3 2.1.1. Thickness of precast element 3 2.1.2 Width of Precast element 3 2.2. Size of Hollow concrete blocks 5 2.3. Size of Reinforcement 6 2.4. Maximum Span of Composite structure 6 2.4.1 Modeling of Precast Element 7 2.4.2. Load on the Precast Element 7 2.4.3 Load on the composite structure 10 2.4.4 Analysis of Precast Element 11 2.4.4.1 General 11 2.4.4.2 Constants and Assumptions 11 2.4.4.3 Determination of maximum Span 12 2.4.4.3.1 Without Intermediate Support 13 2.4.4.3.2 With Intermediate Support 22 2.5 Economical Span of Composite Structure 25 2.5.1 Cost of Composite Structure 25 2.5.1.1 Cost of reinforcement 25 2.5.1.2 Cost of Precast Element 25 2.5.1.3 Cost of HCB 25 2.5.1.4 Cost of Cast insitu concrete 26 2.5.1.5 Cost of Labour for precast and HCB laying 26 2.5.2 Determination of Economical span and combinations. 29 3. Design of Solid and Ribbed Slab for Cost Comparison 32 3.1 Design of One way Solid Slab 32 3.2 Design of Ribbed Slab 34 iv 3.3 Cost Comparison. 38 4. Analytical Investigation of HCB 40 4.1 General 40 4.2 Material Properties and Assumptions 40 4.2.1 Material Properties 40 4.2.2 Assumptions 41 4.2.3 Size of HCB Used in This Study 43 4.3 Load on The Hollow blocks 45 4.4 Description of Stresses 47 4.4.1 State of Stress at a point 47 4.4.2 Principal Normal Stress 48 4.4.3 Principal Shearing Stress 49 4.4.4 Combined Stress 50 4.4.4.1 Maximum Normal Stress Theory (Rankine’s Theory) 50 4.4.4.2 Maximum Shearing Stress Theory (Tresca-Guest Theory) 51 4.4.5 Failure Prediction On Hollow Concrete Block (HCB) 52 4.4.5.1 Analysis Result 54 4.5 Verification of Results Obtained from Laboratory Investigation. 61 4.5.1 Laboratory Testing 61 4.5.2 Verification of Results 61 4.5.2.1 With Uniformly Distributed Load 61 4.5.2.2 With point load 64 5. Conclusion and Recommendations 69 5.1 Conclusions 69 5.1.1 On Composite structure 69 5.1.2 On Hollow Concrete Blocks 69 5.2 Recommendation 70 6 References 71 7. Appendix Appendix A Cost Breakdown 71 Appendix B SAP2000 Precast Model and Analysis Result 76 Appendix C Axial Resistance of Round Bars 81 Appendix D Precast Element Analysis and Design 84 Appendix E SAP2000 Solid Element (HCB) Analysis result and v Failure Prediction. 100
Description: A thesis submitted to The school of graduate studies of Addis Ababa University in partial fulfillment of the requirement for the degree of Master of Science in Structural Engineering
URI: http://hdl.handle.net/123456789/1418
Appears in:Thesis - Civil Engineering

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