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Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
Copyright © 2012 URS CONFIDENTIAL – This document is proprietary and competitively sensitive. Any disclosure, copying, or use of it is strictly prohibited.
Presentation to
GT STRUDL USER GROUP MEETING
June 20th, 2013
Feifei Lu, PEStructural Engineer
URS Corporation
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
Copyright © 2012 URS CONFIDENTIAL – This document is proprietary and competitively sensitive. Any disclosure, copying, or use of it is strictly prohibited.
Outline
• Introduction of GT STRUDL Baseplate Wizard
• Anchor Tolerance
• Loading
• Support Condition
• Analysis & Results
– Fix Support
– Spring Support
– Nonlinear Support
• Thermal Load Analysis
• Conclusion
• Q&A
2
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
Copyright © 2012 URS CONFIDENTIAL – This document is proprietary and competitively sensitive. Any disclosure, copying, or use of it is strictly prohibited. 3
Introduction of GT STRUDL Baseplate Wizard
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
Copyright © 2012 URS CONFIDENTIAL – This document is proprietary and competitively sensitive. Any disclosure, copying, or use of it is strictly prohibited. 4
Introduction of GT STRUDL Baseplate Wizard
Baseplate Geometry
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
Copyright © 2012 URS CONFIDENTIAL – This document is proprietary and competitively sensitive. Any disclosure, copying, or use of it is strictly prohibited. 5
Introduction of GT STRUDL Baseplate Wizard
Attachment (user define)
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Introduction of GT STRUDL Baseplate Wizard
Anchor properties and Location
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Introduction of GT STRUDL Baseplate Wizard
Concrete Bearing Loading Information
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Introduction of GT STRUDL Baseplate Wizard
Analysis & Results
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
Copyright © 2012 URS CONFIDENTIAL – This document is proprietary and competitively sensitive. Any disclosure, copying, or use of it is strictly prohibited. 10
Anchor Tolerance
Breaker
Tie Off Jib Crane
Plan View
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Horizontal: #11 Bar in BundleVertical:#8 Bar
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Anchor Installation Window
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Case 1 Case 232.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
32.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Case 3 Case 432.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
32.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Case 5 Case 632.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
32.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Case 7 Case 832.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
32.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Case 9 Case 1032.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
32.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Case 11 Case 1232.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
32.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Case 13 Case 1432.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
32.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Anchor Tolerance
Case 15 Case 1632.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
32.0
0.0
3.0
6.0
9.0
12.0
15.0
18.0
21.0
24.0
27.0
30.0
26.0 0.0 3.0 6.0 9.0 12.0 15.0 18.0 21.0X
Y
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Loading
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Loading
•Operating Condition
a) Position 1(O1): D + L Swing arm perpendicular to the radial concrete wall.
b) Position 2(O2): D + L Swing arm parallel to the radial concrete wall.
•Parking Condition: Swing arm parallel to the concrete wall.
a) Self weight
b) Seismic Load
c) Thermal Load
Load Case Description
O1 Operating Loading at Position 1
O2 Operating Loading at Position 2
P Parking position Dead Load
T Thermal Load from 80° to 120°
EX Seismic Load along X-direction (Horizontal)
EZ Seismic Load along Z-direction (Horizontal)
EY Seismic Load along Y-direction (Vertical)
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Loading
X
Y
ZSUPPORT FX FY
FIXED JOINT
IND LOAD 1
-2568.5804.
o
900.0
1.0800E+05
o
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & Results
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & ResultsFix Support Condition
X
Y
Z
SUPPORT FX FY
FIXED JOINT
Fix Support
Tension OnlyElement
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & ResultsFix Support Condition
Fix Support
Tension OnlyElement
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & ResultsSpring Support Condition
X
Y
Z
KFY 7.5000E+05 SPRING KFX 7.5000E+05 RESTRAIN FX FY FIXED JOINT
Spring Support
Tension OnlyElement
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & Results Spring Support Condition
Spring Support
Tension OnlyElement
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & ResultsNonlinear Support Condition
X
Y
Z
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & Results Nonlinear Support Condition
Nonlinear Spring Support
Tension OnlyElement
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
-15000
-10000
-5000
0
5000
10000
15000
Nonlinear Spring Support
Displacement (in)
Forc
e (lb
f)
Analysis & Results Nonlinear Support Condition
Shear Capacity
1/16 inch Slip
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & ResultsFix Support Condition
Fix Support
plate stress (psi) Anchor Results Ratio
Von Mise S1 S2 Anchor 1 Anchor 2 Anchor 3 Anchor 4
Case 1 27261 31238 -31037Loading 1 0.310 0.217 0.399 0.062Loading 2 0.279 0.268 0.436 0.085
Case 2 13319 15095 -15111Loading 1 0.263 0.206 0.426 0.068Loading 2 0.306 0.259 0.455 0.077
Case 3 15932 18047 -18058Loading 1 0.152 0.290 0.501 0.072Loading 2 0.174 0.332 0.510 0.089
Case 4 13386 14880 -14891Loading 1 0.311 0.115 0.428 0.080Loading 2 0.349 0.183 0.476 0.091
Case 5 20672 23707 -23585Loading 1 0.378 0.223 0.275 0.148Loading 2 0.407 0.278 0.303 0.165
Case 6 13348 15163 -15053Loading 1 0.266 0.216 0.443 0.041Loading 2 0.308 0.267 0.477 0.038
Case 7 17217 18744 -18859Loading 1 0.210 0.186 0.528 0.085Loading 2 0.210 0.237 0.543 0.112
Case 8 26067 29869 -29713Loading 1 0.229 0.343 0.345 0.186Loading 2 0.231 0.380 0.364 0.195
Case 9 15950 18112 -17988Loading 1 0.154 0.302 0.519 0.044Loading 2 0.175 0.342 0.536 0.044
Case 10 19874 22795 -22657Loading 1 0.419 0.106 0.276 0.168Loading 2 0.452 0.190 0.319 0.185
Case 11 13402 14952 -14810Loading 1 0.316 0.124 0.448 0.049Loading 2 0.352 0.191 0.503 0.047
Case 12 25398 29098 -28920Loading 1 0.299 0.195 0.358 0.237Loading 2 0.271 0.248 0.391 0.228
Case 13 27612 31643 -31472Loading 1 0.234 0.365 0.378 0.050Loading 2 0.235 0.401 0.401 0.065
Case 14 17245 18744 -18863Loading 1 0.213 0.197 0.550 0.054Loading 2 0.212 0.248 0.577 0.058
Case 15 20966 24049 -23896Loading 1 0.431 0.119 0.304 0.056Loading 2 0.464 0.203 0.355 0.069
Case 16 21741 24934 -24802Loading 1 0.385 0.239 0.300 0.046Loading 2 0.414 0.292 0.334 0.056
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & Results Spring Support Condition
Spring Support
plate stress (psi) Anchor Results Ratio
Von Mise S1 S2 Anchor 1 Anchor 2 Anchor 3 Anchor 4
Case 1 27273 31255 -30975Loading 1 0.282 0.186 0.409 0.078Loading 2 0.301 0.192 0.428 0.113
Case 2 13329 15120 -15133Loading 1 0.246 0.192 0.429 0.081Loading 2 0.307 0.213 0.468 0.094
Case 3 15939 18077 -18087Loading 1 0.149 0.268 0.497 0.085Loading 2 0.251 0.205 0.494 0.116
Case 4 13391 14904 -14909Loading 1 0.289 0.123 0.425 0.077Loading 2 0.288 0.203 0.471 0.110
Case 5 20692 23733 -23530Loading 1 0.348 0.201 0.308 0.151Loading 2 0.393 0.220 0.365 0.170
Case 6 13370 15194 -14987Loading 1 0.252 0.190 0.431 0.074Loading 2 0.313 0.218 0.477 0.073
Case 7 17218 18798 -18850Loading 1 0.201 0.184 0.516 0.082Loading 2 0.237 0.187 0.500 0.127
Case 8 26084 29892 -29664Loading 1 0.211 0.309 0.380 0.187Loading 2 0.299 0.241 0.405 0.199
Case 9 15954 18149 -17923Loading 1 0.156 0.266 0.498 0.079Loading 2 0.259 0.211 0.500 0.095
Case 10 19889 22815 -22599Loading 1 0.382 0.109 0.304 0.155Loading 2 0.379 0.200 0.367 0.181
Case 11 13404 14966 -14756Loading 1 0.295 0.121 0.428 0.071Loading 2 0.296 0.210 0.479 0.088
Case 12 25412 29116 -28869Loading 1 0.270 0.182 0.386 0.222Loading 2 0.291 0.186 0.411 0.211
Case 13 27633 31670 -31411Loading 1 0.219 0.312 0.396 0.080Loading 2 0.308 0.249 0.423 0.103
Case 14 17243 18812 -18851Loading 1 0.207 0.182 0.518 0.077Loading 2 0.246 0.194 0.504 0.107
Case 15 20981 24070 -23824Loading 1 0.392 0.108 0.317 0.072Loading 2 0.388 0.206 0.383 0.098
Case 16 21767 24968 -24733Loading 1 0.356 0.201 0.319 0.075Loading 2 0.402 0.226 0.382 0.087
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & Results Nonlinear Support Condition
Nonlinear Support
plate stress (psi) Anchor Results Ratio
Von Mise S1 S2 Anchor 1 Anchor 2 Anchor 3 Anchor 4
Case 1 28112 32228 -32043Loading 1 0.301 0.193 0.433 0.077Loading 2 0.319 0.200 0.447 0.115
Case 2 13441 15214 -15227Loading 1 0.250 0.194 0.433 0.081Loading 2 0.315 0.219 0.473 0.094
Case 3 16189 18291 -18302Loading 1 0.153 0.273 0.503 0.085Loading 2 0.257 0.211 0.499 0.117
Case 4 13513 14958 -14963Loading 1 0.295 0.125 0.430 0.077Loading 2 0.295 0.210 0.476 0.110
Case 5 20897 23978 -23822Loading 1 0.364 0.206 0.320 0.161Loading 2 0.411 0.229 0.377 0.178
Case 6 13482 15321 -15115Loading 1 0.256 0.192 0.435 0.073Loading 2 0.321 0.225 0.482 0.073
Case 7 17604 19302 -19379Loading 1 0.208 0.188 0.525 0.081Loading 2 0.243 0.192 0.505 0.129
Case 8 26356 30188 -30034Loading 1 0.225 0.322 0.398 0.204Loading 2 0.315 0.252 0.421 0.211
Case 9 20572 21405 -21332Loading 1 0.159 0.270 0.504 0.079Loading 2 0.265 0.218 0.506 0.097
Case 10 20063 23024 -22855Loading 1 0.399 0.112 0.316 0.166Loading 2 0.396 0.208 0.379 0.191
Case 11 13512 15065 -14856Loading 1 0.300 0.123 0.432 0.071Loading 2 0.304 0.217 0.484 0.089
Case 12 26052 29860 -29695Loading 1 0.289 0.189 0.407 0.242Loading 2 0.307 0.193 0.427 0.224
Case 13 28433 32599 -32423Loading 1 0.233 0.324 0.417 0.080Loading 2 0.325 0.262 0.441 0.105
Case 14 17602 19309 -19371Loading 1 0.213 0.185 0.526 0.075Loading 2 0.252 0.199 0.510 0.109
Case 15 21235 24370 -24179Loading 1 0.409 0.111 0.331 0.073Loading 2 0.407 0.215 0.397 0.099
Case 16 22056 25309 -25128Loading 1 0.372 0.206 0.333 0.076Loading 2 0.421 0.237 0.397 0.087
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Analysis & Results Summary
Plate Stress (psi) Anchor Force (ratio)
Fix Support 27612 0.5772
Spring Support 27633 0.07% 0.5181 -10.24%
Nonlinear Support 28433 2.97% 0.5258 -8.91%
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Thermal Load Analysis
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Thermal Load Analysis
• Thermal Coefficient:
Coefficients of Expansion for 100 Degree (Fahrenheit)
Concrete 0.000550
Steel 0.000650
Difference between Concrete and Steel 0.000100
Input to Material Constants
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Thermal Load Analysis
• Thermal Load:
Input to Temperature Load
Temperature (Fahrenheit)
Normal Temperature 80
Operating Temperature 120
DT 40
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Thermal Load Analysis
Baseplate under Thermal Loading
plate stress (psi) Anchor Results (lbf)
Von Mise S1 S2 Anchor 1 Anchor 2 Anchor 3 Anchor 4
FIX 6399 4301 -6035Anchor Shear Force 9241 9240 9216 9215
Ratio 0.974 0.974 0.971 0.971
SPRING 435 499 -412Anchor Shear Force 501 501 500 500
Ratio 0.054 0.054 0.054 0.054
NONLINEAR 478 549 -400Anchor Shear Force 0.1 0.1 0.1 0.1
Ratio 0.001 0.001 0.001 0.001
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Conclusion
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Conclusion
• Fix support condition generally conduct most conservative results for anchor forces.
• Design procedure for anchor tolerance situation.
a) Model baseplate for Case 1 and Case 2.
b) Find out maximum plate stress based on Case 1.
c) Find out the most critical anchor by Case 1 and Case 2 analysis.
d) Use Engineering Judgment to determine the worst case for anchor force.
• Temperature change during operating is negligible to baseplate and anchorage design.
Baseplate Analysis for Anchor Bolts Tolerance Using GT STRUDL Base Plate Wizard
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Q&A
