Introduction xi 1 Connection Design 1 1.1 Design Models 1 1.2 Traditional Design Methods 1 1.3 Past and Present Numerical Design Calculations 2 1.4 Validation and Verification 9 1.5 Benchmark Cases 12 1.6 Numerical Experiments 12 1.7 Experimental Validation 13 References 14 2 The Component-Based Finite Element Method 17 2.

1 Material Model 17 2.2 Plate Model and Mesh Convergence 17 2.2.1 Plate Model 17 2.2.2 Mesh Convergence 19 2.3 Contacts 24 2.4 Welds 24 2.

4.1 Direct Connection of Plates 24 2.4.2 Weld with Plastic Redistribution of Stress 25 2.4.3 Weld Deformation Capacity 25 2.5 Bolts 27 2.5.

1 Tension 27 2.5.2 Shear 28 2.6 Interaction of Shear and Tension in a Bolt 29 2.7 High-Strength Bolts in Slip-Critical Connections 31 2.8 Anchor Bolts 32 2.8.1 Description 32 2.

8.2 Anchor Bolts with Stand-Off 33 2.9 Concrete Block 33 2.9.1 Design Model 33 2.9.2 Resistance 33 2.9.

3 Concrete in Compression Stiffness 34 2.10 Local Buckling of Compressed Internal Plates 35 2.11 Moment-Rotation Relation 38 2.12 Bending Stiffness 41 2.13 Deformation Capacity 43 2.14 Connection Model in Global Analyses 45 References 49 3 Welded Connection 51 3.1 Fillet Weld in a Lap Joint 51 3.1.

1 Description 51 3.1.2 Analytical Model 51 3.1.3 Numerical Model 53 3.1.4 Verification of Strength 54 3.1.

5 Benchmark Example 55 3.2 Fillet Weld in a Cleat Connection 57 3.2.1 Description 57 3.2.2 Investigated Cases 57 3.2.3 Verification of Strength 57 3.

2.4 Benchmark Example 58 3.3 Fillet Weld of a Shear Tab 60 3.3.1 Description 60 3.3.2 Investigated Cases 60 3.3.

3 Comparison of Strength 60 3.3.4 Benchmark Example 61 Reference 63 4 T-Stub Connections 65 4.1 Description 65 4.2 Slip-Critical Connections 65 4.3 Prying Action 67 4.4 Prying of the T-Stub 69 4.5 Prying of the Beam Flange 72 4.

6 Summary 75 References 75 5 Beam-Over-Column Connections 77 5.1 Description 77 5.2 HSS Column Local Yielding and Crippling 78 5.3 Beam Web Local Yielding and Crippling 80 5.4 Axial Compression/Bending Moment Interaction 84 5.5 Summary 86 References 86 6 Base Plate Connections 87 6.1 Description 87 6.2 Concentric Axial Compressive Load 88 6.

3 Shear Load 97 6.4 Combined Axial Compressive Load and Moment 100 6.5 Summary 102 References 103 7 Bracket Plate Connections 105 7.1 Description 105 7.2 Bolted Bracket Plate Connections 105 7.3 Bolt Shear Rupture 107 7.4 Additional Bolt Groups 108 7.5 Tearout 110 7.

6 Slip Critical 111 7.7 Welded Bracket Plate Connections 111 7.8 Summary 113 References 114 8 Single Plate Shear Connections 115 8.1 Description 115 8.2 Bolt Group Strength 116 8.3 Plate Thickness 118 8.4 Other Framing Configurations 121 8.5 Location of the Point of Zero Moment 123 8.

6 Stiffness Analysis 126 8.7 Summary 127 References 127 9 Extended End-Plate Moment Connections 129 9.1 Description 129 9.2 End-Plate Thickness 130 9.3 Vertical Bolt Spacing 137 9.4 Capacity Design 138 9.5 Summary 141 References 141 10 Bolted Wide Flange Splice Connections 143 10.1 Description 143 10.

2 Axial Loading 144 10.3 Axial Loading with Unequal Column Depths 149 10.4 Combined Axial and Major-Axis Flexure Loading 152 10.5 Summary 154 References 154 11 Temporary Splice Connection 155 11.1 Introduction 155 11.2 Axial Load 156 11.3 Bending Moments 160 11.4 Shear Along the z-Axis 162 11.

5 Shear Along the y-Axis 165 11.6 Torsion 167 11.7 Summary 168 References 169 12 Vertical Bracing Connections 171 12.1 Introduction 171 12.2 Verification Examples 172 12.3 Connection Design Capabilities of Software for HSS 175 12.4 Summary 177 References 177 13 HSS Square Braces Welded to Gusset Plates in a Concentrically Braced Frame 179 13.1 Problem Description 179 13.

2 Verification of Resistance as Per AISC 179 13.3 Resistance by CBFEM 179 13.3.1 Limit States (AISC and CBFEM) 182 13.3.2 Parametric Study 195 13.4 Summary 198 Appendix 199 References 210 14 HSS Circular Braces Welded to a Gusset Plate in a Chevron Concentrically Braced Frame 211 14.1 Problem Description 211 14.

2 Verification of Resistance as Per AISC 211 14.3 Resistance by CBFEM 213 14.4 Parametric Study 216 14.5 Summary 219 Appendix 220 References 229 15 Wide Flange Brace Bolted to a Gusset Plate in a Concentrically Braced Frame 231 15.1 Problem Description 231 15.2 Verification of Resistance as Per AISC 231 15.3 Verification of Resistance as Per CBFEM 231 15.4 Parametric Study 234 15.

5 Summary 242 Appendix 243 References 262 16 Double Angle Brace Bolted to a Gusset Plate in a Concentrically Braced Frame 263 16.1 Problem Description 263 16.2 Verification of Resistance as Per AISC 263 16.3 Verification of Resistance as Per CBFEM 263 16.4 Resistance by CBFEM 267 16.5 Summary 273 Appendix 274 References 292 17 Double Web-Angle (DWA) Connections 293 17.1 Description 293 17.2 The Experimental Study 293 17.

2.1 Instrumentation 294 17.3 Code Design Calculations and Comparisons 299 17.3.1 LRFD Design Strength Capacities of Four Test Specimens 300 17.3.2 LRFD Design Strength Capacities of Six Additional Connection Models 301 17.3.

3 Calculated ASD Design Strength Capacities 302 17.4 IDEA StatiCa Analysis 303 17.5 ABAQUS Modeling and Analysis 304 17.6 Results Comparison 308 17.6.1 Comparison of IDEA StatiCa and AISC Design Strength Capacities 308 17.6.2 Comparison of IDEA StatiCa and ABAQUS Results 310 17.

7 Summary 313 References 313 18 Top- and Seat-Angle with Double Web-Angle (TSADWA) Connections 315 18.1 Description 315 18.2 Experimental Study on TSADWA Connections 315 18.3 Code Design Calculations and Comparisons 317 18.3.1 Design Strength Capacity of Double Web-Angles 318 18.3.2 Design Strength Capacity of the Top- and Bottom Seat-Angles 322 18.

3.3 ASD Design Strength Capacities of Test No. 14S1 324 18.4 IDEA StatiCa Analysis 324 18.4.1 Moment Capacity Analysis Using IDEA StatiCa 324 18.4.2 Moment-Rotation Analysis 327 18.

5 ABAQUS Analysis 328 18.6 Results Comparison 331 18.6.1 Comparison of Connection Capacities from IDEA StatiCa Analysis, AISC Design Codes, and Experiments 331 18.6.2 Comparison of IDEA StatiCa and ABAQUS Results 332 18.7 Summary 335 References 336 19 Bolted Flange Plate (BFP) Moment Connections 337 19.1 Description 337 19.

2 Experimental Study on BFP Moment Connections 337 19.3 Code Design Calculations and Comparisons 340 19.3.1 Design Strength Capacity of Single Web Plates 341 19.3.2 Design Strength Capacity of Flange Plates 343 19.3.3 Calculated ASD Design Strength Capacities of Test No.

BFP 344 19.4 IDEA StatiCa Analysis 344 19.4.1 Moment Capacity Analysis Using IDEA StatiCa 344 19.4.2 Moment-Rotation Analysis 345 19.5 ABAQUS Analysis 349 19.6 Results Comparison 351 19.

6.1 Comparison of IDEA StatiCa Analysis Data, AISC Design Strengths, and Test Data 351 19.6.2 Comparison of IDEA StatiCa and ABAQUS Results 353 19.7 Summary 355 References 356 20 Conclusion 357 References 358 Disclaimer 359 Terms and symbols 361 Index 363.