S - Kam Ng PhD Dissertation Final.pdf - Digital Repository of CCEE ...

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PercentPercentPercentPercent1886050Comparison of Pile Resistance Ratio (Data from Literatures)1.0Condition (Method)EOD-Literature (WEAP-SA)EOD-Literature (CAPWAP)Proposed Method-Lit (WEAP-SA)Proposed Method-Lit (CAPWAP)Mean StDev N1.779 0.3954 211.528 0.3201 141.063 0.2040 211.040 0.1740 144030201000.51.01.52.02.5Pile Resistance Pile Ratio Resistance (R Ratio (Rm/REOD or Rm/Rt)m /R EOD for or R m /R t considering pile setup)Figure 4.9: Statistical assessment of the proposed pile setup method based only on datapoints from literaturesComparison of Pile Resistance Ratio (All data)7060501.0Condition (Method)EOD (WEAP-SA)EOD (CAPWAP)Proposed Method (WEAP-SA)Proposed Method (CAPWAP)Mean StDev N1.643 0.3701 381.516 0.2749 190.9963 0.1944 381.024 0.1525 194030201000.51.01.52.02.5Pile Resistance Pile Ratio Resistance (R Ratio (Rm/REOD or Rm/Rt)m /R EOD for or R m /R t considering pile setup)Figure 4.10: Statistical assessment of the proposed pile setup method based on all data points
189Measured Pile Resistance at Time After EOD, R m(kN)(kN)9000800070006000500040003000200010000Pile Size Std.RatioMean(mm) Dev.R m /R EOD >= 600 1.663 0.591R m /R EOD < 600 1.454 0.4120 2000 4000 6000 8000Estimated Pile Resistance at EOD, R EOD (kN)Cheng&Ahmad (1988)-244mmCEPFellenius (2002)-273mm OEPFellenius (2002)-273mm CEPThibodeau&Paikowsky (2005)-324mm CEPKim et al. (2009)-356mm CEPThibodeau&Paikowsky (2005)-356&406mm PCPThibodeau&Paikowsky (2005)-457mm CEPThibodeau&Paikkowsky(2005)-457mm MTKarna (2001)-600mm CEPThompson et al. (2009)-600mmPCPThibodeau&Paikowsky (2005)-610mm CEPThompson et al. (2009)-750mmPCPFigure 4.11: Comparison between measured pile resistances at any time (t) and reported pileresistances at EODMeasured Pile Resistance at Time After EOD, R m800070006000500040003000200010000Pile Size Std.RatioMean(mm) Dev.R m /R t >= 600 1.184 0.396R m /R t < 600 1.063 0.2740 2000 4000 6000 8000Estimated Pile Resistance Using Proposed Method, R t (kN)Cheng&Ahmad (1988)-244mmCEPFellenius (2002)-273mm OEPFellenius (2002)-273mm CEPThibodeau&Paikowsky (2005)-324mm CEPKim et al. (2009)-356mm CEPThibodeau&Paikowsky (2005)-356&406mm PCPThibodeau&Paikowsky (2005)-457mm CEPThibodeau&Paikowsky (2005)-457mm MTKarna (2001)-600mm CEPThompson et al. (2009)-600mmPCPThibodeau&Paikowsky (2005)-600mm CEPThompson et al. (2009)-750mmPCPFigure 4.12: Comparison between measured pile resistances at any time (t) and estimated pileresistances using the proposed pile setup method
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Pile Setup, Dynamic Construction Co
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v2.5.8. Soil profile input procedur
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viii6.2. Introduction .............
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xLIST OF FIGURESFigure 2.1: Typical
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xiiresistances using the proposed p
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xivLIST OF TABLESTable 2.1: Summary
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xviABSTRACTBecause of the mandate i
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xviiiFurthermore, using these calib
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2soil strength. The gain in effecti
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4check pile integrity; (5) evaluate
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6confidently accounted for in curre
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8Board (IHRB) sponsored research pr
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10collected undisturbed soil sample
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12correction factors to estimated p
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15Chapter 7 - An Improved CAPWAP Ma
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17Procedures and Models Version 200
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19Section 2.8.2.2. Historical Summa
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21A = pile cross sectional area at
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23compressive force pulse expands d
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25When a uniform free end rod is im
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27RTLR sC vJ cv b= total soil resis
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29For a pile with very hard driving
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Force∆R∆u31( )(2.12)where,BTA =
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33Hammer efficiency defines the per
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35ForceMinimal Shaft ResistanceMini
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372.4. Case Pile Wave Analysis Prog
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39computation is stable only when t
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41,( ) ( ) - (2.17)( ) ( ) ( ) (2.1
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43been carried by many researchers
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Table 2.5: Summary 2 of dynamic soi
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472.4.3.1. Pile modelPile Dynamics,
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49Pile Segment iSoil Segment kJ kR
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̇̇̇̇51= pile bottom velocity at
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534. Constant dynamic soil paramete
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(a) Schematic (b) ModelExternal Com
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572.5.4. Pile modelPile model is di
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59model calculates the dynamic soil
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61where,a ij= acceleration at a pil
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Table 2.6: Summary of static analys
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65Table 2.9: Empirical values for
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Ultimate Capacity (kips)Stroke (ft)
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69blows/ft) or less is required to
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71methods is obscure and it cannot
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73Case Reference Pile type7891011Le
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75Case Reference Pile type910111213
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Days (Ahead)/DelayFigure 2.15: A gr
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83construction procedures used by t
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85f(g)βσ gFailure RegionArea = p
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87Table 2.14: AASHTO assumed random
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89(2.47)( ) ( ) (2.48)( ) ( ) (2.49
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912.7.4 Recommended LRFD resistance
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932.8. Pile Setup2.8.1 Introduction
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Ratio of Final to Initial Pile Resi
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97be determined. The challenges wit
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99Based on about 70 test piles at m
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101Komurka et al. (2003) noted that
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103developed by Wathugala and Desai
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105dynamic analysis methods. They s
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107Factors for LRFD Foundation Stre
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109New Jersey.Coyle, H. M, Bartoske
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111Hannigan, P. J. and Webster, S.
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113Theory to Piles, Petaling Jaya,
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115PDCA Specification 102-07, PDCA
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117Soderberg, L. O. (1962). ―Cons
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119Driven Piles in Clay.‖ Canadia
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1213.2. IntroductionMany researcher
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123with CAPWAP analysis at differen
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125Disturbed soil samples were coll
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1273.4.3. InstrumentationAll test p
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129embedded length before and after
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131(R EOD ) from CAPWAP analyses. T
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133due to restrike and SLT as well
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1353.5.6. Quantitative studies betw
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1373. The experimental investigatio
Page 157 and 158: 139Geotechnical Special Publication
Page 159 and 160: abcTable 3.1: Summary of soil profi
Page 161 and 162: TestpileISU2ISU3ISU4ISU5ISU6HammerD
Page 163 and 164: 1453.02.82.6Reported Soil Informati
Page 165 and 166: Vertical Coefficient of Consolidati
Page 167 and 168: Depth Below Ground (m)Depth Below G
Page 169 and 170: Percent Increase in Total Resistanc
Page 171 and 172: Depth Below Ground (m)Depth Below G
Page 173 and 174: 155CHAPTER 4: PILE SETUP IN COHESIV
Page 175 and 176: 157proposed pile setup method in a
Page 177 and 178: 159consider the immediate gain in p
Page 179 and 180: 161companion paper also show that p
Page 181 and 182: 1632. Accounting for the actual tim
Page 183 and 184: 165were compared using the proposed
Page 185 and 186: 167(17 ft) well-graded sand (SW) an
Page 187 and 188: 169( )√ ( ) √ (4.10)where μ =
Page 189 and 190: 1714.8. Integration of Pile Setup I
Page 191 and 192: 173diameter smaller than 600 mm). F
Page 193 and 194: Pile Resistance (kN)175geotechnical
Page 195 and 196: 177R m , R t = Measured pile resist
Page 197 and 198: 179Field Testing of Steel Piles in
Page 199 and 200: 181Table 4.1: Summary of existing m
Page 201 and 202: Table 4.3: Summary of five external
Page 203 and 204: 183Soil LayerTable 4.5: Soil inform
Page 205 and 206: (R t /R EOD ) × (L EOD /L t )(R t
Page 207: Measured Pile Resistance (kN)Measur
Page 211 and 212: Ratio of Measured and Predicted Pil
Page 213 and 214: 193surrounding the pile and the con
Page 215 and 216: 195Method (FORM) to calculate resis
Page 217 and 218: 197estimated using Eq. (5.1a), was
Page 219 and 220: 199Table 5.2: Comparison of Resista
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Page 223 and 224: 203( ( )) ( ̅) ( ) (5.7)( ) ( ) (5
Page 225 and 226: 205φ setup values. At a fixed dead
Page 227 and 228: 207conditions and design practices,
Page 229 and 230: 209procedure in pile designs. Two c
Page 231 and 232: 211estimation methods (e.g. Skov an
Page 233 and 234: 213End-Of-Drive and Set-up Componen
Page 235 and 236: 215CHAPTER 6: INTEGRATION OF CONSTR
Page 237 and 238: 217Bridge Design Specifications hav
Page 239 and 240: 219Chapter 5. The resistance factor
Page 241 and 242: 2216.4.3. Calibration methodFirst-O
Page 243 and 244: 223The LRFD resistance factors cali
Page 245 and 246: 225a. For sand and mixed soil profi
Page 247 and 248: 227for the Iowa Blue Book. To evalu
Page 249 and 250: 229Book method computed by AbdelSal
Page 251 and 252: 231modified resistance factor (Пξ
Page 253 and 254: 233Furthermore, these LRFD recommen
Page 255 and 256: 235Revisions, Washington, D.C.Abdel
Page 257 and 258: Table 6.1: Summary of data records
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Testpile IDISU1ISU2ISU3ISU4ISU5ISU6
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Table 6.4: Summary of adjusted meas
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243SourceIowaNCHRPReport 507Soilpro
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PercentPercent2459990501010.10.2STI
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PercentPercent2479990501010.51.0STI
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PercentWEAP over Blue Book with Con
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2517.2. IntroductionAlthough dynami
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253difficulty in pile setup investi
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255Liang (2000) calculated an avera
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257model shown in Figure 7.1. Based
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259which were identified as ISU2, I
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261figure, a power relationship in
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263relationship between the f s val
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2657.5.4. EOD condition for cohesio
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267were plotted against the SPT N-v
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269correlation between dynamic soil
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271Application of Stress-Wave Theor
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273Table 7.4: Summary of measured s
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275Table 7.5: Summary of measured s
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Soil Resistance (R)Soil DampingResi
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Upward Traveling Wave, W u (kN)F(t)
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Shaft Quake Value, qs (mm)Shaft Dam
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Depth Below Ground (m)Depth Below G
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Shaft Quake Value, q s (mm)Smith's
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Shaft Dampinf Factor, J s (s/m)Shaf
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289CHAPTER 8: SUMMARY, CONCLUSIONS
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291increased immediately and rapidl
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293improved. The regionally-calibra
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295relationship was conclusively dr
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297ACKNOWLEDGMENTSI was one of the
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