| Preface Introduction 0.1 Thermal Problems in Structural Engineering 0.2 Harmfulness and Resolution of Structure After Fire 0.3 Behavior Characteristics of Reinforced Concrete Structure at Elevated Temperature References PART Ⅰ Mechanical Behavior of Materials at Elevated Temperatures 1 Strength of Concrete at Elevated Temperatures 1.1 Testing Method and Device 1.1.1 General Testing Program 1.1.2 Design and Manufacture of the Furnace for Material Testing 1.2 Compressive Strength at Elevated Temperatures 1.2.1 General Phenomena During Heating 1.2.2 Cubic Compressive Strength at Elevated Temperatures 1.2.3 Compressive Strength After Cooling 1.3 Tensile Strength at Elevated Temperatures Conclusions References 2 Deformation of Concrete at Elevated Temperature 2.1 Deformation During Heating and Cooling 2.1.1 Deformation During Monotonic Heating and the Linear Expansion Coefficient 2.1.2 Deformation During the Heating-Cooling Cycle 2.2 Compressive Deformation and the Stress-Strain Curve at Elevated Temperature 2.2.1 Characteristics of Compressive Deformation 2.2.2 Prismatic Compressive Strength and Corresponding Strain 2.2.3 Equation of a Complete Stress-Strain Curve 2.2.4 Initial Elastic Modulus and Secant Modulus at Peak Stress 2.3 Stress-Strain Curves Under Repeated Loading 2.3.1 Envelope and Loci of the Common Point and the Stability Point 2.3.2 Formulas for the Unloading and Reloading Curves 2.4 Short Time Creep at Elevated Temperature 2.4.1 Creep Under Constant Temperature and Stress 2.4.2 Creep Under Variable Temperature and Stress Conclusions References 3 Temperature-Stress Paths and Coupling Constitutive Relation of Concrete 3.1 Temperature-Stress Paths and Deformation Components 3.1.1 Temperature-Stress Path and Its Resolution 3.1.2 Composite Components of Deformation at Elevated Temperatures 3.1.3 Testing Method and Average Temperature of the Specimen 3.2 Compressive Strength of Concrete Under Different Temperature-Stress Paths 3.2.1 Upper and Lower Bounds of Compressive Strength 3.2.2 Influence of Different Temperature-Stress Paths 3.3 Thermal Strain Under Stress and Transient Thermal Strain 3.3.1 Thermal Strain Under Stress 3.3.2 Transient Thermal Strain 3.4 Coupling Temperature-Stress Constitutive Relation 3.4.1 Comparison of Strains Under Different Temperature-Stress Paths 3.4.2 Basic Formulas of Coupling Constitutive Relation 3.4.3 Calculation Rules for Strain Increments 3.4.4 Example and Experimental Demonstration Conclusions References 4 Mechanical Behavior and Constitutive Relation of Reinforcement at Elevated Temperatures 4.1 Testing Method and Device 4.1.1 Testing Program 4.1.2 Test Contents and Data Processing 4.2 Tensile Strength at Elevated Temperature 4.2.1 Characteristics and Ultimate Tensile Strength 4.2.2 Yield Strength at Elevated Temperatures 4.2.3 Influence of Temperature-Stress Path 4.3 Tensile Strain and Stress-Strain Curve at Elevated Temperature 4.3.1 Characteristics of Tensile Strain 4.3.2 Equation of Stress-Strain Curve 4.3.3 Elastic Modulus 4.4 Thermal Strain Under Stress 4.4.1 Freely Expanding Strain 4.4.2 Thermal Strain Under Constant Stress 4.43 Short-Time Creep at Elevated Temperatures Conclusions References PART Ⅱ Temperature Field on a Cross Section of a Structural Member 5 Temperature-Time Curve of Fire and the Equation of Heat Conduction 6 Theoretical Analysis of the Temperature Field 7 Calculation Charts for a Temperature Field on a Cross Section PART Ⅲ Mechanical Behavior of Members and Structures at Elevated Temperatures 8 Behavior of Flexural Members at Elevated Temperatures 9 Behavior of Compressive Members at Elevated Temperatures 10 Behavior of Statically Indeterminate Structures at Elevated Temperatures PART Ⅳ Theoretical Analysis and Practical Calculation Method 11 General Mechanical Characteristics of Inhomogeneous Sections 12 Finite Element Analysis of the Loadincl History for Structures 13 Practical Calculation Methods for the Ultimate Strength of Members and Structures at Elevated Temperature 14 Fire Resistance Analysis and Damage Grade Evaluation of a Structure Index |
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