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 |  موضوع: كتاب Design of Reinforced Concrete Structure - Volume 3 الإثنين 18 سبتمبر 2017, 3:55 am | |
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تصميم المنشآت الخرسانية الجزء الثالث
الدكتور مشهور أحمد غنيم - الدكتور محمد ثروت المهيلمي
Design of Reinforced Concrete Structure - Volume 3
Mashhour Ahmed Ghoneim
Professor of Concrete Structures - Cairo University
Mahmoud Tharwat El-Mihilmy
Associate Professor of Concrete Structures - Cairo University
ويتناول الموضوعات الأتية :
TABLE OF CONTENTS
1. ARCHES, SPECIAL TYPES OF FRAMES AND
TRUSSES
1.1 Introduction
1.2 Reinforced Concrete Arches
1.2.1 General
1.2.2 Design of the Arch with a Tie
1.2.3 Layout of a Hall Covered by Arched Girders
1.3 Saw-tooth Roof Structures
1.3.1 North Direction Normal to the Span
1.3.1.1 Frames as the Main Supporting Elements
1.3.1.2 Arches as the Main Supporting Elements
1.3.2 North Direction is Parallel to the Span
1.3.2.1 Frames as the Main Supporting Elements
1.4 Vierendeel Girders 36
1.5 Expansion and Settlement Joints
1.5.1 Expansion Joints
1.5.2 Settlement Joints
1.6 End gables 46
Example 1.1: Structural system for workshop
Example 1.2: Structural system for car maintenance workshop.
Example 1.3: Structural system for medical facility
Example 1.4: Structural system for textile factory
Example 1.5: Structural system of a factory
Example 1.6: Arch with a Tie
Example 1.7: Frame with the north direction is normal to span.
Example 1.8: Frame with north direction is parallel to the span
1.7 Arched Slab Systems
1.7.1 Introduction
1.7.2 Structural system of the Arched Slab *
1.7.3 Structural Analysis of Arched Slabs..
1.7.3.1 Circular Arched Slabs
1.7.3.2 Parabolic Arched Slabs
Example 1.9: Circular arched slab
Example 1.10 Parabolic arched slab
4. CONTROL OF CRACKING
2. DEEP BEAMS AND CORBELS 4.1 Introduction
4.2 Reasons for Controlling Crack Widths
4.3 Types of Cracks
4.4 Development of Cracks due to Loads
4.5 Crack Control in the Egyptian Code
4.5.1 Categories of structures
4.5.2 Satisfaction of Cracking Limit State
4.5.3 Code Related Provisions
4.6 Liquid Containing Structures
4.7 Design Aids for Calculating wk
Example 4.1
Example 4.2 :
Example 4.3
Example 4.4
2.1 Introduction
2.2 Deep beams
2.2.1 General
2.2.2.1 The Empirical Design Method
22.2.2 Design Using the Strut and Tie Method
2.2.3 Detailing of Other Types of Deep Beams
2.2.3.1 Bottom Loaded Deep Beam
2.2.3.2 Continuous Deep Beams
2.2.3.3 Deep Beam Supporting Another Deep Beam
2.3 Shear- Friction Concept
2.4 Short Cantilevers (Brackets or Corbels)
Example 2.1
Example 2.2
5. DESIGN OF FOUNDATIONS
3. CONTROL OF DEFLECTIONS \
5.1 Introduction
5.2 Types of Foundations..
5.3 Soil Pressure under concentrically Loaded Footings
5.4 Soil Pressure under Eccentrically Loaded Footings
Example 5.1
5.5 Gross and Net Soil Pressures
Example 5.2 .
5.6 Design of Isolated Footings
5.6.1 Introduction
5.6.2 Design Steps
Example 5.3
5.7 Combined Footings
Example 5.4: Combined footing with PC
Example 5.5: RC combined footing resting directly on soil
5.8 Strap Footings
Example 5.6 ....
5.9 Raft Foundations
5.9.1 Introduction
5.9.2 Conventional Rigid Method
5.9.3 Analysis of the Raft Using Computer Programs
5.9.3.1 Modeling of the Raft
5.9.3.2 Modeling of the soil
5.9.3.3 Analysis of the Computer Output
Example 5.8: Raft using the Conventional method
3.1 Introduction 242 324
3.2 Load-Deflection Behavior of RC Beams
3.3 Moment of Inertia of RC sections
3.3.1 Gross moment of inertia
3.3.2 Cracked Transformed Moment of Inertia
3.3.3 Effective moment of inertia Ie
3.4 Code Provisions for Control of Deflections
3.4.1 Limiting Deflection by Span-Depth Ratio (Approach One)..,, 252
3.4.1.1 Beams and One-Way slabs
3.4.1.2 Two-way slabs
3.4.2 Calculation of Deflection (Approach Two)...
3.4.2.1 Calculation of Immediate Deflection
3.4.2.2 Long Term Deflection ....
3.4.2.3 Permissible Deflections
3.4.2.4 Deflection of Continuous Beams
Example 3.1 263 378
Example 3.2
Example 3.3
Example 3.4
Example 3.5
Example 3.6
iv7.4.3 Prestressing Reinforcement
7.5 Losses in Prestressed Members
7.5.1 Introduction
7.5.2 Anchorage Slip Losses (A)
7.5.3 Elastic Shortening Losses(e)
7.5.4 Wobble Friction Losses (W)
7.5.5 Curvature Friction Losses (F)
7.5.6 Shrinkage Losses (sh)
7.5.7 Creep Loss (CR)
7.5.8 Steel Relaxation Losses (R) .
Example 7.1: Calculations of losses for a pre-tensioned beam
Example 7.2: Step by step computation of losses in post-tensioned beam 548
7.6 Anchorage Zones
7.6.1 Introduction...,
7.6.2 Stress Distribution
7.6.3 Methods of Analysis
7.6.3.1 Stmt-and-Tie Method.
1.63.2 Beam Analogy
1.633 Finite element method
Example 7.3
Example 7,3 .
Example 7.1
Example 5,9: Raft design using computer analysis 420
5.10 Design of Pile Caps
5.10.1 Introduction
5.10.2 Pile Cap shapes
5.10.3 Design of Pile Caps
5.10.3.1 Design Using the conventional Method ,
5.10.3.2 Finite Element Analysis of Pile Caps.....
5.10.3.3 Design using The Strut and Tie Method
Example 5.10
Example 5,11
Example 5.12
6. STRUT-AND-TIE MODEL
6.1 Introduction 471
6.2 Principle of B and D Regions
6.3 Components of the Strut-and-Tie Model
6.4 Design of the Struts
6.4.1 Idealization of the Strut
6.4.2 Strength of Un-reinforced Struts 482
6.4.3 Strength of Reinforced Struts ....
6.5 Design of Ties
6.5.1 Strength of the Tie
6.5.2 Anchorage of Reinforcement
6.6 Design of Nodal Zones
6.6.1 Types of Nodal Zones
6.6.2 Strength of Nodal Zones
8. FLEXURE IN PRESTRESSED CONCRETE BEAMS
8.1 Introduction '.
8.2 Analysis of Prestressed Concrete Members Under Service Loads
8.2.1 General
8.2.2 Allowable Concrete and Steel Stresses
8.2.2.1 Allowable Steel Stresses
8.2.2.2 Allowable Concrete Stresses
8.2.3 Calculations of Stresses at Transfer
8.2.4 Calculations of Stresses at Full Service Loads
8.2.5 Summary
Examine 8.1
Example 8.2
Example 8.3
Example 8.4
Example 8.5
8.3 Flexural Strength of Prestressed Beams
8.3.1 Introduction !
8.3.2 Calculations of the Ultimate Moment Capacity
6.7 Applications ... 490
Example 1
Example 2
Example 3
7. INTRODUCTION TO PRESTRESSED CONCRETE
7.1 Introduction 520
7.2 Systems of Prestressing
7.2.1 Pretensioned Concrete ...
7.2.2 Post-tensioned Concrete
7.3 General Design Principle
7.4 Materials
7.4.1 Concrete 526
7.4.2 Non-prestressing Reinforcement
vi9.3 Torsion in Prestressed Concrete 727
9.3.1 General
9.3.2 The Design for Torsion in the Egyptian Code
9.3.2.1 Introduction
9.3.2.2 Calculation of the Shear Stress due to Torsion
9.3.2.3 Consideration of Torsion
9.3.2.4 Check the Adequacy of the Concrete Section ,
9.3.2.5 Design of Torsional Reinforcement
9.3.2.6 Code Requirements
9.4 Combined Shear and Torsion
9.4.1 Introduction
9.4.2 Design for Shear and Torsion in ECP 203
9.4.2.1 Consideration of Torsion
9.4.2.2 Adequacy of the Concrete Cross-Section
9.4.2.S Design of Transverse Reinforcement
9.4.2.4 Design of Longitudinal Reinforcement
Example 9.3: Combined shear and torsion design(l)
Example 9.4: Combined shear and torsion design(2)
8.3.3 Calculation of Prestressing Steel Stress at Ultimate fps ,.
8.3.3.1 Calculation of fps in bonded tendons..;
8.3.3.2 Calculation of fps for unbonded tendons
8.3.4 Maximum Limits for the Areas of Prestressing and nonprestressing Reinforcing Steel
Example 8.6: Mu using the approximate equation (I-section)..
Example 8.7: Mu using the approximate equation (T-section)
Example 8.8: Mu using the approximate equation (R-section)
Example 8,9: Mu using the strain compatibility method
8.4 Combined Flexure and Axial Loads
8.4.1 Stresses at service loads
8.4.2 Capacity at ultimate loads
Example 8.10: Strain compatibility method for combined flexure and
axial load
8.5 Proper Beam Shape Selection
8.6 Limiting Eccentricity Envelopes
Example 8.11: Upper and lower envelopes
8.7 Determination of the Prestressing Force and the Eccentricity in Flexural
Members
Example 8.12: Determination of P and e combinations
Example 8.13: Determination of P and e combinations
8.8 Reduction of Prestressing Force Near Supports
8.9 Deflection of Prestressed Beams
8.9.1 Introduction
8.9.2 Calculations of Deflections in the ECP 203
Example 8.14
Example 8.15
Example 8.16
662 10 .CONTINUOUS PRESTRESSED BEAMS
10.1 Introduction 758
10.2 Tendon Profile for Continuous Beams
10.3 Elastic Analysis of Continuous Beams
10.3.1 Effects of the Prestress
10.3.2 Support Displacement Method
10.3.2.1 Background
Example 10.1
Example 10.2
10.3.3 Equivalent Load Method
Example 10.3
10.4 Linear Transformation and Concordant Profiles
9. SHEAR AND TORSION IN PRESTRESSED 778
CONCRETE BEAMS
9.1 Introduction
9.2 Shear in prestressed Beams
9.2.1 Inclined Cracking
9.2.2 Effect of Prestress
9.2.3 Shear Strength According to ECP 203
9.2.3.1 Upper limit of Design Shear Stress qumax ...
9.2.3.2 Shear Strength Provided by Concrete qcu
9.2.4 Shear Reinforcement Calculations
Example 9.1: Shear design using the simplified procedure
Example 9.2: Shear design using the detailed procedure.
Appendix A: Design Charts for Sections Subjected to Flexure
Appendix B: Design Charts for Calculating Icr and w*
Appendix C: Slope and Deflection Equations
REFERENCES
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