Steel-concrete composite structures, including concrete-filled steel tubular (CFST) structures and concrete-filled double skin steel tubular (CFDST) structures, have seen a significant increase in use in the modern construction industry due to their superior structural performance compared to conventional steel bare sections and reinforced concrete (RC) structures. Single Skin and Double Skin Concrete Filled Tubular Structures presents state-of-the-art in CFST and CFDST structures and their performance under various static loading conditions. The book establishes a foundation for understanding the structural performance of composite structures by discussing the behavior of CFST and CFDST structures based on experimental and finite element (FE) investigations. Besides, numerical and analytical methods for investigating the behavior of CFST and CFDST structures are presented in detail. The title offers many design examples following international design codes, including North American design guidelines ANSI-AISC 360, European design regulations Eurocode 4, and Australian design code AS 5100. The title can be used for the practical use of civil engineers and as a resource for further research.
1. Chapter 1 Introduction - p. 1 2. Chapter 2 Experimental tests - p. 29 3. 2.1: Introduction - p. 30 4. 2.2: Cross-sectional shapes - p. 33 5. 2.3: Experiments - p. 33 6. 2.4: Effective parameters - p. 39 7. 2.5: Failure modes - p. 41 8. 2.6: Stiffeners in composite columns - p. 72 9. 2.7: Size effects - p. 90 10. 2.8: Hollow ratio - p. 100 11. 2.9: Effects of the confinement factor - p. 102 12. 2.10: Effects of the material properties - p. 105 13. 2.11: Load eccentricity - p. 113 14. 2.12: The role of the inner steel tube - p. 119 15. 2.13: Material imperfections - p. 125 16. 2.14: Effects of preload and long-term sustained load - p. 153 17. References - p. 163 18. Chapter 3 Analytical methods - p. 167 19. 3.1: Introduction - p. 167 20. 3.2: Stress–strain response of materials - p. 168 21. 3.3: Creep model for concrete - p. 279 22. 3.4: Creep analysis of CFST columns - p. 284 23. 3.5: A constitutive model for computing the lateral strain of confined concrete - p. 298 24. 3.6: Axial and lateral stress–strain response of CFST column - p. 305 25. 3.7: An analytical axial stress–strain model for circular CFST columns - p. 308 26. 3.8: Path dependent stress–strain model for CFST columns - p. 314 27. 3.9: Elastic-plastic model for the stress–strain response of CFST columns - p. 321 28. 3.10: Strength enhancement induced during cold forming - p. 332 29. References - p. 335 30. Chapter 4 Numerical methods - p. 341 31. 4.1: Introduction - p. 343 32. 4.2: Numerical modeling of confined concrete - p. 343 33. 4.2.1: Concrete plasticity model: Drucker–Prager type plasticity model - p. 344 34. 4.2.2: Concrete plasticity model: concrete damage plasticity model - p. 359 35. 4.2.3: Effects of different parameters on the numerical results - p. 375 36. 4.3: Investigating the behavior of composite members through numerical analysis - p. 384 37. 4.3.1: Short columns - p. 385 38. 4.3.2: Mechanism of interaction of steel tubes and concrete - p. 419 39. 4.3.3: Tapered and inclined composite members - p. 427 40. 4.3.4: Slender columns - p. 441 41. References - p. 533 42. Chapter 5 Design rules and standards - p. 539 43. 5.1: Limitations of design regulations on the strength of materials and section slenderness - p. 542 44. 5.2: Compressive design strength of composite members based on design guidelines - p. 546 45. 5.2.1: Compressive strength of CFST columns subjected to axial compression - p. 546 46. 5.2.2: Buckling curves - p. 555 47. 5.2.3: Design capacity of CFST columns subjected to axial compression - p. 556 48. 5.2.4: Examples - p. 559 49. 5.2.5: Design strength of CFDST columns subjected to axial compression - p. 577 50. 5.3: Moment design strength of composite members based on design guidelines - p. 577 51. 5.3.1: Moment strength of CFST beams - p. 577 52. 5.3.2: Moment capacity of CFST beams based on design codes - p. 586 53. 5.3.3: Examples - p. 592 54. 5.3.4: Moment capacity of CFDST beams - p. 604 55. 5.4: CFST members under combined axial loading and bending - p. 609 56. 5.4.1: Determining the resistance of CFST members under combined axial loading and bending based on design rules - p. 611 57. 5.4.2: Second-order effect - p. 623 58. 5.4.3: Example eight - p. 626 59. 5.5: Strength of composite members based on research works - p. 635 60. 5.5.1: CFST members under axial compression - p. 635 61. 5.5.2: CFDST members under axial compression - p. 655 62. 5.5.3: CFST members under bending - p. 655 63. 5.5.4: CFDST members under bending - p. 673 64. 5.5.5: CFDST members under combined axial loading and bending - p. 676 65. 5.6: Local buckling of steel plates - p. 678 66. 5.7: Further discussion on local buckling of steel plates in rectangular CFST columns under axial compression - p. 706 67. 5.8: Compressive strength of CFST stub columns with stiffeners - p. 732 68. 5.8.1: Square CFST stub columns with PBL - p. 732 69. 5.8.2: Square CFST stub columns with inclined stiffener ribs - p. 736 70. 5.8.3: Square CFST stub columns with binding bars - p. 737 71. 5.8.4: Rectangular CFST stub columns with binding bars - p. 741 72. 5.8.5: Square CFST stub columns with spiral tension bars - p. 746 73. 5.8.6: Circular CFST stub columns with tie bars - p. 749 74. 5.8.7: Circular CFST stub columns with tension bars - p. 752 75. 5.8.8: Circular CFST stub columns with external ring bar stiffeners - p. 754 76. 5.8.9: Circular CFST stub columns with jacket strip stiffeners - p. 757 77. 5.8.10: Circular CFST stub columns with spiral bar stiffeners - p. 758 78. 5.8.11: L-shaped CFST stub columns with binding bars - p. 759 79. 5.8.12: T-shaped CFST stub columns with binding bars - p. 767 80. 5.9: Compressive strength of CFST stub columns with local corrosions - p. 776 81. 5.10: Strain compatibility between the steel tube and the concrete core - p. 785 82. References - p. 786 83. Chapter 6 Future research - p. 793 84. Index - p. 813
Steel-concrete composite structures, including concrete-filled steel tubular (CFST) structures and concrete-filled double skin steel tubular (CFDST) structures, have seen a significant increase in use in the modern construction industry due to their superior structural performance compared to conventional steel bare sections and reinforced concrete (RC) structures. Single Skin and Double Skin Concrete Filled Tubular Structures presents state-of-the-art in CFST and CFDST structures and their performance under various static loading conditions. The book establishes a foundation for understanding the structural performance of composite structures by discussing the behavior of CFST and CFDST structures based on experimental and finite element (FE) investigations. Besides, numerical and analytical methods for investigating the behavior of CFST and CFDST structures are presented in detail. The title offers many design examples following international design codes, including North American design guidelines ANSI-AISC 360, European design regulations Eurocode 4, and Australian design code AS 5100. The title can be used for the practical use of civil engineers and as a resource for further research.
1. Chapter 1 Introduction - p. 1 2. Chapter 2 Experimental tests - p. 29 3. 2.1: Introduction - p. 30 4. 2.2: Cross-sectional shapes - p. 33 5. 2.3: Experiments - p. 33 6. 2.4: Effective parameters - p. 39 7. 2.5: Failure modes - p. 41 8. 2.6: Stiffeners in composite columns - p. 72 9. 2.7: Size effects - p. 90 10. 2.8: Hollow ratio - p. 100 11. 2.9: Effects of the confinement factor - p. 102 12. 2.10: Effects of the material properties - p. 105 13. 2.11: Load eccentricity - p. 113 14. 2.12: The role of the inner steel tube - p. 119 15. 2.13: Material imperfections - p. 125 16. 2.14: Effects of preload and long-term sustained load - p. 153 17. References - p. 163 18. Chapter 3 Analytical methods - p. 167 19. 3.1: Introduction - p. 167 20. 3.2: Stress–strain response of materials - p. 168 21. 3.3: Creep model for concrete - p. 279 22. 3.4: Creep analysis of CFST columns - p. 284 23. 3.5: A constitutive model for computing the lateral strain of confined concrete - p. 298 24. 3.6: Axial and lateral stress–strain response of CFST column - p. 305 25. 3.7: An analytical axial stress–strain model for circular CFST columns - p. 308 26. 3.8: Path dependent stress–strain model for CFST columns - p. 314 27. 3.9: Elastic-plastic model for the stress–strain response of CFST columns - p. 321 28. 3.10: Strength enhancement induced during cold forming - p. 332 29. References - p. 335 30. Chapter 4 Numerical methods - p. 341 31. 4.1: Introduction - p. 343 32. 4.2: Numerical modeling of confined concrete - p. 343 33. 4.2.1: Concrete plasticity model: Drucker–Prager type plasticity model - p. 344 34. 4.2.2: Concrete plasticity model: concrete damage plasticity model - p. 359 35. 4.2.3: Effects of different parameters on the numerical results - p. 375 36. 4.3: Investigating the behavior of composite members through numerical analysis - p. 384 37. 4.3.1: Short columns - p. 385 38. 4.3.2: Mechanism of interaction of steel tubes and concrete - p. 419 39. 4.3.3: Tapered and inclined composite members - p. 427 40. 4.3.4: Slender columns - p. 441 41. References - p. 533 42. Chapter 5 Design rules and standards - p. 539 43. 5.1: Limitations of design regulations on the strength of materials and section slenderness - p. 542 44. 5.2: Compressive design strength of composite members based on design guidelines - p. 546 45. 5.2.1: Compressive strength of CFST columns subjected to axial compression - p. 546 46. 5.2.2: Buckling curves - p. 555 47. 5.2.3: Design capacity of CFST columns subjected to axial compression - p. 556 48. 5.2.4: Examples - p. 559 49. 5.2.5: Design strength of CFDST columns subjected to axial compression - p. 577 50. 5.3: Moment design strength of composite members based on design guidelines - p. 577 51. 5.3.1: Moment strength of CFST beams - p. 577 52. 5.3.2: Moment capacity of CFST beams based on design codes - p. 586 53. 5.3.3: Examples - p. 592 54. 5.3.4: Moment capacity of CFDST beams - p. 604 55. 5.4: CFST members under combined axial loading and bending - p. 609 56. 5.4.1: Determining the resistance of CFST members under combined axial loading and bending based on design rules - p. 611 57. 5.4.2: Second-order effect - p. 623 58. 5.4.3: Example eight - p. 626 59. 5.5: Strength of composite members based on research works - p. 635 60. 5.5.1: CFST members under axial compression - p. 635 61. 5.5.2: CFDST members under axial compression - p. 655 62. 5.5.3: CFST members under bending - p. 655 63. 5.5.4: CFDST members under bending - p. 673 64. 5.5.5: CFDST members under combined axial loading and bending - p. 676 65. 5.6: Local buckling of steel plates - p. 678 66. 5.7: Further discussion on local buckling of steel plates in rectangular CFST columns under axial compression - p. 706 67. 5.8: Compressive strength of CFST stub columns with stiffeners - p. 732 68. 5.8.1: Square CFST stub columns with PBL - p. 732 69. 5.8.2: Square CFST stub columns with inclined stiffener ribs - p. 736 70. 5.8.3: Square CFST stub columns with binding bars - p. 737 71. 5.8.4: Rectangular CFST stub columns with binding bars - p. 741 72. 5.8.5: Square CFST stub columns with spiral tension bars - p. 746 73. 5.8.6: Circular CFST stub columns with tie bars - p. 749 74. 5.8.7: Circular CFST stub columns with tension bars - p. 752 75. 5.8.8: Circular CFST stub columns with external ring bar stiffeners - p. 754 76. 5.8.9: Circular CFST stub columns with jacket strip stiffeners - p. 757 77. 5.8.10: Circular CFST stub columns with spiral bar stiffeners - p. 758 78. 5.8.11: L-shaped CFST stub columns with binding bars - p. 759 79. 5.8.12: T-shaped CFST stub columns with binding bars - p. 767 80. 5.9: Compressive strength of CFST stub columns with local corrosions - p. 776 81. 5.10: Strain compatibility between the steel tube and the concrete core - p. 785 82. References - p. 786 83. Chapter 6 Future research - p. 793 84. Index - p. 813
