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

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1000.3(8.9)(3 2 )(1. 2) - 2.8836L eTherefore,(1.2)(8.9)(3.0) =4+ L.5.0 10.0L e = 27.0mFor detailed analysis of stability, reference should be made to Section 3.1.3.
101D.2 Example 2 - Estimation of Residual Settlement with Surcharge PreloadingGiven1. The loading variations of a small reclamation project, which involve filling to finalformation level, application of surcharge preloading, removal of surcharge preloadingand application of future imposed load, are shown in Figure Dl.2. Vertical drains are installed before fill placement and the programme of reclamation isassumed as follows:Completion of vertical drain installation:Completion of filling to final formation level:Filling of surcharge preloading:Removal of surcharge preloading:(removal up to final formation level +4.5 mPD)Application of future imposed load:commencement of fillingthe end of the 9 th monthin the 10 th monthend of the 22 nd monthin the 24 th monthNote : The time in the above programme is measured from commencement of filling.3. Design data of the reclamation is shown below:Table D2.1Reclamation ProfileSeabed levelMean sea levelFinal formation levelSurcharge preloading thickness-8.0 mPD+1.3mPD+4.5 mPD5.0mMarine deposits dataThickness, H10.0mDrainage conditionDouble drainageUnit weight, y Mn16.0 kN/m 3Coefficient of consolidation (vertical), c v1.5 m 2 /yrCoefficient of consolidation (horizontal), c h1.5m 2 /yrCompression ratio, CR0.29Recompression ratio, RR0.06Coefficient of secondary consolidation, C n£ 0.005Fill dataUnit weight, y fillLogarithmic creep compression rate, a19.0 kN/m 21.0%
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PORT WORKS DESIGN MANUALPART 3Guide
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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
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18The remaining layer of marine or
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20• The rate of supply of public
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22the shortage of public filling ca
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24Considerations when planning the
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262.10 Environmental ImpactsAll rec
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293.3.1 GeneralThe reclamation sequ
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31requires checking of the equilibr
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33(2) Detailed Stability AnalysisTh
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3.4 WorksIf, despite all the precau
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374.4.1 GeneralThis chapter discuss
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3943.2 due toThe ultimate primary c
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41where S pt(residml) = Residual se
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Design of surcharge preloading gene
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45H = Fill thickness.a = Logarithmi
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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 and 70: 67Figure 5 - Method of Calculation
Page 71 and 72: 69timet + 120Piezometer installed a
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 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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Page 120 and 121: 118CD~5COCOCDCLCD20 -14.9Required p
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Page 124 and 125: 122state value.Mud wave. Excessive
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Page 128 and 129: 126dd'D ree 0e maxe minFHI pK aLeng
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Page 132: X1S1SD112HK 627.5 P83Port works des
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