GEOGUIDE 1 GUIDE TO RETAINING WALL ... - HKU Libraries

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164FigureNo.16 Calculation of Active Earth Pressure for aVertical Retaining Wall Using the Rankine-Bell182Equation17 Calculation of Active Earth Pressure Using 183Coulomb Theory18 Active Earth Pressure Coefficients for Different 184Wall Configurations and Retained Slope Angles19 Passive Earth Pressure Coefficients for a Vertical 185Wall Retaining Sloping Ground20 Passive Earth Pressure Coefficients for a 186Sloping Wall Retaining Horizontal GroundPageNo.21 Illustration of the Trial Wedge Method with 187Hydrostatic Pressure for a Soil Modelled as ac 1 = 0 Material22 Illustration of the Trial Wedge Method with 188Hydrostatic Pressure for a Soil Modelled as ac 1 - 0' Material23 Illustration of the Trial Wedge Method with 189Groundwater Seepage for a Layered Soil Mass24 Approximate Method for the Evaluation of the 190Line of Action of Active Force25 General Method for the Evaluation of Active 191Earth Pressure Distribution26272829The Circular Arc Method for the Evaluation of 192Passive Earth PressureSimplified Method for the Evaluation of 193Compaction-induced Earth PressuresExample of Load Cases for a Uniformly Distributed 194Surcharge for the Design of L-shaped CantileverRetaining WallsCalculation of Lateral Pressure on a Vertical 195Retaining Wall Due to Vertical andHorizontal Loads
165No.p ageNo.30 Evaluation of Water Pressure on Potential 196Failure Surfaces31 Flow-nets Around Retaining Walls Under 197Steady-state Groundwater Seepage32 Flow-nets Around Retaining Walls 198Due to Surface Infiltration33 Water Pressure Distribution Across an 199Impermeable Cantilevered Retaining WallUnder Steady-state Groundwater Seepage34 Groundwater Flow Patterns and Resultant Water 200Pressures Behind Impermeable CantileveredRetaining Walls35 Flow-nets Around Bored Pile and Caisson Walls 20136 Penetration of Cut-off Wall to Prevent Hydraulic 202Failure in Homogeneous Sand37 Penetration of Cut-off Wall to Prevent Hydraulic 203Failure in Stratified Soil38 Ultimate Limit States of External Instability 204for Gravity Retaining Walls39 Calculation Models for Checking Against Sliding, 205Overturning and Bearing Capacity Failure ofGravity Retaining Walls40 Calculation of Active Earth Pressure for 206Stepped Gravity Retaining Walls41 Alternative Sliding Failure Mechanisms for 207Retaining Walls with a Tilted Base42 Alternative Sliding Failure Mechanisms for 208Retaining Walls with a Shear Key43 Typical Drainage Schemes for Gravity Retaining 209Walls44 Cross-sections of Typical Crib Walls 210
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THE OF KONGLIBRARIESHong Collection
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© Hong Kong GovernmentFirst publis
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CONTENTSTITLE PAGE 1PageNo.FOREWORD
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5. GEOTECHNICAL PARAMETERS 37PageNo
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PageNo.7.3 ASSESSMENT OF EFFECTS OF
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1111. CANTILEVERED RETAINING WALLS
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131. INTRODUCTION1.1 PURPOSE AND SC
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15invaluable in the design of retai
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18(a) Ultimate limit state - a stat
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20durability of the wall during its
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22specified to check the design ass
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24Where geotextile filters are inte
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27deterioration. In such cases, sur
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294. VERIFICATION OF SAFETY AND SER
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314.3.2 Design Calculation ModelsA
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33(d) inaccurate assessments of loa
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35(b) The range of possible behavio
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375. GEOTECHNICAL PARAMETERS5.1 GEN
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39parameters and an explanation of
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415.5 SOIL SHEAR STRENGTH PARAMETER
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435.5.4 Soils Derived from Insitu R
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45strengths, laboratory tests are s
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47tloading tests, pile tests and pu
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490.64(y-/d) + 0.017forloosesand^ =
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525.8.2 Shear Strength of Rock Join
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54It should be noted that use of th
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565.11.3 Wall Friction for Passive
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596.6.1 GENERALThe lateral pressure
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61without propping. The earth press
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63where OCR = overconsolidation rat
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65impermeable, this water may not d
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67The trial wedge method is rather
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69The compaction-induced earth pres
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717. EFFECTS OF SURCHARGE AND SEISM
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73or the presence of lateral suppor
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75strength degrades under seismic e
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78requirement to achieve accurate p
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80inclined drain system, no positiv
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82These should be connected to suit
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84The purpose of the segregation cr
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86for loose sands. In order to cate
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which cover the various wall types.
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909.2.4 Design Against Serviceabili
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92fill to insitu ground.BS 8007 (BS
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94considered as gravity retaining w
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969.4.6 AestheticsThe guidance on a
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989.5.3 Materials(1) Gabion Materia
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100mesh is sufficiently rigid to su
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102The wall stem and base slab of a
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10511. CANTILEVERED RETAINING WALLS
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107should be considered in the desi
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109which case the requirement to li
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Illof classical theories for calcul
Page 115 and 116: 113behind caissons to reduce the ef
Page 117: 11511.3.6 AestheticsA retaining wal
Page 120 and 121: 118(e) assessing the safety of temp
Page 122 and 123: 12012.4 MONITORING12.4.1 Assessment
Page 124 and 125: 122conditions. Changes in values be
Page 126 and 127: 124record sheet is given in Figure
Page 128 and 129: 126Broms, B.B. & Ingleson, I. (1971
Page 130 and 131: 128Fredlund, D.G. & Khran, J. (1977
Page 132 and 133: 130pp 265-283.Ingold, T.S. (19795).
Page 134 and 135: 132Potts, D.M. & Burland, J.B. (198
Page 137: 135TABLES
Page 140 and 141: 138TableNo.PageNo.14 Suggested Maxi
Page 142 and 143: 140Table 2 - Recommended Minimum Fr
Page 144 and 145: 142Table 4 - Grading and Plasticity
Page 146 and 147: 144Table 6 - Minimum Partial Load F
Page 148 and 149: 146Table 9 - Typical Ranges of Valu
Page 150 and 151: 148Table 13 - Typical Ranges of Val
Page 152 and 153: 150Table 15 - Suggested Maximum Val
Page 154 and 155: 152TTable 17 - Design Criteria for
Page 156 and 157: 154Table 19 - Geotextile Filter Cri
Page 158 and 159: Table 21 - Classes of Geotechnical
Page 160 and 161: 158Table 23 - Typical Working Accur
Page 162 and 163: 160Table 25 - Suggested Frequencies
Page 165: 163LIST OF FIGURESFigureNo.p ageNo.
Page 169 and 170: I 113*50'EGUANGDONG SHENGKat O Chau
Page 171 and 172: 1690)(ftCD u.-4-jCOo(DJICOFailure e
Page 173 and 174: 171T t Largest relevant stress rang
Page 175: 1735045353025,20 40D r60 80 100t f=
Page 178 and 179: 176100S 80enC.f\jams § Sis §J1I1
Page 180 and 181: 178O.OI 0 0.01 0.02 0.03 0.04 0.05
Page 182 and 183: 180* IIII• IISoil Zones Near a Ca
Page 184 and 185: 182Surcharge, quumimmmi uO o'j}) NH
Page 186 and 187: 184Of3Ul01COfOOOFailure surfaceLoga
Page 188 and 189: 186o£CODTJ15U13121110l~ r PCurves
Page 190 and 191: 188Plane on whichactive force iscal
Page 192 and 193: 1902HC.G. of wedge ABAFailure plane
Page 194 and 195: 192Locus of P pa] Resultant Force L
Page 196 and 197: 194Uniformly-distributed surcharge-
Page 198 and 199: 196r— Potential failure surfaceDr
Page 200 and 201: 198(a) Gravity Retaining WallNote :
Page 202 and 203: 200Infiltration \ \ \ \ \ \(a) Homo
Page 204 and 205: 202CL-Legend :Loose sandDense sandF
Page 206 and 207: 204a) Loss of Overall Stability(b)
Page 208 and 209: 206(a) Active Earth Pressure for Pa
Page 210 and 211: 208(a) Mechanism 1 : Sliding AlongH
Page 212 and 213: 210Concrete baseConcrete base(a) Ty
Page 214 and 215: 212(a) L-shaped CantileverRetaining
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214\ \\\\1 \ \\j 0(a) Deflected Sha
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216(a) Idealised PressureDistributi
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218OLegend :MinimumF t valuesCdaDip
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220Continuous rock joint atthe base
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222Location of Retaining Wall :Reta
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225CONTENTSPageNo.TITLE PAGE 223CON
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228should be satisfied for all ulti
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230For intermediate groundwater lev
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232advantages and economy can resul
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234wall. Limit equilibrium methods
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237LIST OF FIGURESFigureNo.PageNo.A
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240* - -T7 = c'N.s e U«c + 0.5 Y '
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242(a) Foundation at a Distance of
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245GLOSSARY OF SYMBOLSAA 1cross-sec
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247ff mG sa coefficient used in cal
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249m ia coefficient used in calcula
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251q cqdqfq n 'q uq u ituniaxial co
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253 a ai> etc. angles at which pote
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255GLOSSARY OF TERMS
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258Residual soil. Soil derived from
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260(Superseded by GEO Report No. 9)
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262Report on the Rainstorm of Augus
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264Sheung Shui : Solid and Superfic
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266Muk Kiu Tau : Solid Geology (1:5
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. u
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