PORT WORKS DESIGN MANUAL PART 3 Guide To - The University ...

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68VirgincompressionSlope = compression ratio, CRAverage slope Decompression ratio, RRlog cr'o-': Effective Stress€ ; StrainFigure 7 - Definition of Compressibility Parameters. Drainage pathGranular fillDrainagepathSoft deposits < see note 1 )Pore water flow(a) Fill on Soft Deposits(b) Fill on Soft Depositswith Vertical Drains(see note 2)Permeable soil stratumNotes:1. Soft deposits include marine and alluvial deposits.2. Soft deposits may lie within impermeable strata such as stiff alluvial clay.Figure 8 - Shortening of Drainage Path by Vertical Drains
69timet + 120Piezometer installed at Point X 0 outside reclamation sitetimet+120Piezometer installed at Point XT within reclamation siteAverage excess pore water =pressure at Point X 1 on Day xAverage of the pore water pressure recorded bypiezometer at x 1 between time (t + T L ) and (t + 24+T L )- Average of the pore water pressure recorded bypiezometer at x 0 between time t and (t + 24)Legend:Px 0 = Pore water pressure recorded by piezometer at Point x 0 outside reclamation.PXi= Pore water pressure recorded by piezometer at Point XT within reclamation.T L = Time lag of response between piezometers at Points x 0 and ^.Notes:1. Automatic electronic devices should be used to facilitate recording of pressure data.2. Pressure reading should be logged continuously.3. Piezometer outside the reclamation is installed for the purpose of eliminating the tidal effect on thepiezometer reading taken inside the reclamation,Figure 9 - Tidal Effect on Pore Water Pressure Measurement
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PORT WORKS DESIGN MANUALPART 3Guide
Page 5 and 6:
FOREWORDThe Port Works Design Manua
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CONTENTSTITLE PAGE - !FOREWORD 3CON
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PageNo.5.3.3 Verification of Settle
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101.2 Definition, Symbols and Refer
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12the investigations may need to co
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14consequences of adopting a partic
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16(3) Installation of vertical drai
Page 20 and 21: 18The remaining layer of marine or
Page 22 and 23: 20• The rate of supply of public
Page 24 and 25: 22the shortage of public filling ca
Page 26 and 27: 24Considerations when planning the
Page 28 and 29: 262.10 Environmental ImpactsAll rec
Page 31 and 32: 293.3.1 GeneralThe reclamation sequ
Page 33 and 34: 31requires checking of the equilibr
Page 35 and 36: 33(2) Detailed Stability AnalysisTh
Page 37 and 38: 3.4 WorksIf, despite all the precau
Page 39 and 40: 374.4.1 GeneralThis chapter discuss
Page 41 and 42: 3943.2 due toThe ultimate primary c
Page 43 and 44: 41where S pt(residml) = Residual se
Page 45 and 46: Design of surcharge preloading gene
Page 47 and 48: 45H = Fill thickness.a = Logarithmi
Page 49: 47The calculation of residual settl
Page 52 and 53: 50For monitoring of pore pressure d
Page 54 and 55: 525.3.2 of FillThis section discuss
Page 56 and 57: 54the availability of frequent moni
Page 58 and 59: 56reduce settlement problems. Howev
Page 61 and 62: 59REFERENCESAsaoka, A (1978). Obser
Page 63: 61FIGURES
Page 67 and 68: 65(1) Geotextile-\I,- i i i i i , ,
Page 69: 67Figure 5 - Method of Calculation
Page 73 and 74: 71Slope >1Required pause in fill pl
Page 75: 73APPENDIX APREFABRICATED BAND DRAI
Page 78 and 79: 76List of ASTMD4491-92: Standard Te
Page 81: 79CONTENTSTITLE PAGE 77CONTENTS 79B
Page 84 and 85: 82t = Time from load application.c
Page 86 and 87: 84Hansbo, S. (1981).Consolidation o
Page 89 and 90: 87CONTENTSTITLE PAGE 85CONTENTS 87C
Page 91 and 92: 89C OF BY ASAOKA'S METHODC.IGeneral
Page 93: 91OFFigureNo.PageNo.C1 Asaoka's Gra
Page 96 and 97: 94SiFinal settlementPlacement of. a
Page 99: 97CONTENTSTITLE PAGE 95CONTENTS 97D
Page 102 and 103: 1000.3(8.9)(3 2 )(1. 2) - 2.8836L e
Page 104 and 105: 102Vertical drains dataTypeSpacingP
Page 106 and 107: 104The final primary consolidation
Page 108 and 109: 106The initial effective stress at
Page 110 and 111: 108Table D2.6m0123M0.5711.5712.5713
Page 112 and 113: 110Effective stress increment at en
Page 114 and 115: 112(3) Settlement due to secondary
Page 116 and 117: 114The value ofF(n) in Example D.2
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118CD~5COCOCDCLCD20 -14.9Required p
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120
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122state value.Mud wave. Excessive
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124
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126dd'D ree 0e maxe minFHI pK aLeng
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128
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X1S1SD112HK 627.5 P83Port works des
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