PDF Free Download | Unified Theory of Concrete Structures by Thomas T. C. Hsu, and Y. L. Mo
Contents of Unified Theory of Concrete Structures eBook
- Instructors’ Guide
- Introduction
- Overview
- Structural Engineering
- Structural Analysis
- Main Regions vs Local Regions
- Member and Joint Design
- Six Component Models of the Unified Theory
- Principles and Applications of the Six Models
- Historical Development of Theories for Reinforced Concrete
- Struts-and-ties Model
- General Description
- Struts-and-ties Model for Beams
- Struts-and-ties Model for Knee Joints
- Comments
- Equilibrium (Plasticity) Truss Model
- Basic Equilibrium Equations
- Equilibrium in Bending
- Equilibrium in Element Shear
- Equilibrium in Beam Shear
- Equilibrium in Torsion
- Summary of Basic Equilibrium Equations
- Interaction Relationships
- Shear–Bending Interaction
- Torsion–Bending Interaction
- Shear–Torsion–Bending Interaction
- Axial Tension–Shear–Bending Interaction
- ACI Shear and Torsion Provisions
- Torsional Steel Design
- Shear Steel Design
- Maximum Shear and Torsional Strengths
- Other Design Considerations
- Design Example
- Comments on the Equilibrium (Plasticity) Truss Model
- Bending and Axial Loads
- Linear Bending Theory
- Bernoulli Compatibility Truss Model
- Transformed Area for Reinforcing Bars
- Bending Rigidities of Cracked Sections
- Bending Rigidities of Uncracked Sections
- Bending Deflections of Reinforced Concrete Members
- Nonlinear Bending Theory
- Bernoulli Compatibility Truss Model
- Singly Reinforced Rectangular Beams
- Doubly Reinforced Rectangular Beams
- Flanged Beams
- Moment–Curvature (M–φ) Relationships
- Combined Bending and Axial Load
- Plastic Centroid and Eccentric Loading
- Balanced Condition
- Tension Failure
- Compression Failure
- Bending–Axial Load Interaction
- Moment–Axial Load–Curvature (M −N − φ) Relationship
- Fundamentals of Shear
- Stresses in -D Elements
- Stress Transformation
- Mohr Stress Circle
- Principal Stresses
- Strains in -D Elements
- Strain Transformation
- Geometric Relationships
- Mohr Strain Circle
- Principle Strains
- Reinforced Concrete -D Elements
- Stress Condition and Crack Pattern in RC -D Elements
- Fixed Angle Theory
- Rotating Angle Theory
- Contribution of Concrete (Vc)
- Mohr Stress Circles for RC Shear Elements
- Rotating Angle Shear Theories
- Stress Equilibrium of RC -D Elements
- Transformation Type of Equilibrium Equations
- First Type of Equilibrium Equations
- Second Type of Equilibrium Equations
- Equilibrium Equations in Terms of Double Angle
- Example Problem Using Equilibrium (Plasticity) Truss Model
- Strain Compatibility of RC -D Elements
- Transformation Type of Compatibility Equations
- First Type of Compatibility Equations
- Second Type of Compatibility Equations
- Crack Control
- Mohr Compatibility Truss Model (MCTM)
- Basic Principles of MCTM
- Summary of Equations
- Solution Algorithm
- Example Problem using MCTM
- Allowable Stress Design of RC -D Elements
- Rotating Angle Softened Truss Model (RA-STM)
- Basic Principles of RA-STM
- Summary of Equations
- Solution Algorithm
- Example Problem for Sequential Loading
- Elements under Proportional Loading
- Example Problem for Proportional Loading
- Failure Modes of RC -D Elements
- Concluding Remarks
- Fixed Angle Shear Theories
- Softened Membrane Model (SMM)
- Basic Principles of SMM
- Research in RC -D Elements
- Poisson Effect in Reinforced Concrete
- Hsu/Zhu Ratios ν and ν
- Experimental Stress–Strain Curves
- Softened Stress–Strain Relationship of Concrete in Compression
- Softening Coefficient ζ
- Smeared Stress–Strain Relationship of Concrete in Tension
- Smeared Stress–Strain Relationship of Mild Steel Bars in Concrete
- Smeared Stress–Strain Relationship of Concrete in Shear
- Solution Algorithm
- Example Problem
- Fixed Angle Softened Truss Model (FA-STM)
- Basic Principles of FA-STM
- Solution Algorithm
- Example Problem
- Cyclic Softened Membrane Model (CSMM)
- Basic Principles of CSMM
- Cyclic Stress–Strain Curves of Concrete
- Cyclic Stress–Strain Curves of Mild Steel
- Hsu/Zhu Ratios υTC and υCT
- Solution Procedure
- Hysteretic Loops
- Mechanism of Pinching and Failure under Cyclic Shear
- Eight Demonstration Panels
- Shear Stiffness
- Shear Ductility
- Shear Energy Dissipation
- Torsion
- Analysis of Torsion
- Equilibrium Equations
- Compatibility Equations
- Constitutive Relationships of Concrete
- Governing Equations for Torsion
- Method of Solution
- Example Problem
- Design for Torsion
- Analogy between Torsion and Bending
- Various Definitions of Lever Arm Area, Ao
- Thickness td of Shear Flow Zone for Design
- Simplified Design Formula for td
- Compatibility Torsion in Spandrel Beams
- Minimum Longitudinal Torsional Steel
- Design Examples
- Beams in Shear
- Plasticity Truss Model for Beam Analysis
- Beams Subjected to Midspan Concentrated Load
- Beams Subjected to Uniformly Distributed Load
- Compatibility Truss Model for Beam Analysis
- Analysis of Beams Subjected to Uniformly Distributed Load
- Stirrup Forces and Triangular Shear Diagram
- Longitudinal Web Steel Forces
- Steel Stresses along a Diagonal Crack
- Shear Design of Prestressed Concrete I-beams
- Background Information
- Prestressed Concrete I-Beam Tests at University of Houston
- UH Shear Strength Equation
- Maximum Shear Strength
- Minimum Stirrup Requirement
- Comparisons of Shear Design Methods with Tests
- Shear Design Example
- Three Shear Design Examples
- Finite Element Modeling of Frames and Walls
- Overview
- Finite Element Analysis (FEA)
- OpenSees–an Object-oriented FEA Framework
- Material Models
- FEA Formulations of -D and -D Models
- Material Models for Concrete Structures
- Material Models in OpenSees
- Material Models Developed at UH
- Coordinate Systems for Concrete Structures
- Implementation
- Analysis Procedures
- Equation of Motion for Earthquake Loading
- Single Degree of Freedom versus Multiple Degrees of Freedom
- A Three-degrees-of-freedom Building
- Damping
- Nonlinear Analysis Algorithm
- Load Control Iteration Scheme
- Displacement Control Iteration Scheme
- Dynamic Analysis Iteration Scheme
- Nonlinear Finite Element Program SCS
- Application of Program SCS to Wall-type Structures
- RC Panels Under Static Load
- Prestresed Concrete Beams Under Static Load
- Framed Shear Walls under Reversed Cyclic Load
- Framed Shear Wall Units at UH
- Low-rise Framed Shear Walls at NCREE
- Mid-rise Framed Shear Walls at NCREE
- Post-tensioned Precast Bridge Columns under Reversed Cyclic Load
- Framed Shear Walls under Shake Table Excitations
- A Seven-story Wall Building under Shake Table Excitations
