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

More documents

Recommendations

Info

PageNo.3.2 SELECTION AND USE OF BACKFILL 213.2.1 General 213.2.2 Types of Backfill 223.3 FILTER AND DRAINAGE MATERIALS 233.3.1 Granular Filter and Drainage Materials 233.3.2 Geotextile Filter Materials 233.4 CONSTRUCTION METHOD AND SEQUENCE 253.5 TEMPORARY WORKS - GENERAL ASPECTS 253.5.1 Responsibility for Temporary Works Design 253.5.2 Standard of Temporary Works Design 253.5.3 Influence of Temporary Works on Retaining 25Wall Design3.6 TEMPORARY EXCAVATION AND FOUNDATION WORKS 263.6.1 Excavation Works 263.6.2 Foundation Works 263.6.3 Groundwater Control 273.7 PLACEMENT AND COMPACTION OF BACKFILL 273.8 SERVICES 283.9 USE OF PRESTRESSED GROUND ANCHORS 284. VERIFICATION OF SAFETY AND SERVICEABILITY 294.1 GENERAL PRINCIPLES 294.2 DESIGN SITUATIONS 294.3 CALCULATION METHODS 304.3.1 Available Approaches to Design Calculations 304.3.2 Design Calculation Models 314.3.3 Loadings, Geometric and Geotechnical Parameters 314.3.4 Factors of Safety 324.3.5 Structural Design 344.4 PRESCRIPTIVE MEASURES 344.5 THE OBSERVATIONAL METHOD 344.6 GEOTECHNICAL DESIGN REPORT 35
5. GEOTECHNICAL PARAMETERS 37PageNo.5.1 GENERAL 375.2 GEOTECHNICAL INVESTIGATION 375.2.1 Content of Site Investigation 375.2.2 Evaluation of Geotechnical Parameters 385.3 DETERMINATION OF SELECTED VALUES OF DESIGN 39PARAMETERS5.4 UNIT WEIGHT 405.5 SOIL SHEAR STRENGTH PARAMETERS 415.5.1 General 415.5.2 Design Soil Strength Model and Parameters 415.5.3 Compacted Fill 425.5.4 Soils Derived from Insitu Rock Weathering 435.5.5 Colluvium 445.5.6 Granular Sedimentary Soils 445.5.7 Cohesive Sedimentary Soils 455.6 SOIL DEFORMATION PARAMETERS 455.6.1 General 455.6.2 Deformation Parameters for the Linear Elastic 46Continuum Model5.6.3 Deformation Parameters for the Winkler Model 475.7 SOIL PERMEABILITY AND CONSOLIDATION PARAMETERS 505.7.1 Permeability 505.7.2 Coefficient of Consolidation 515.8 ROCK STRENGTH PARAMETERS 515.8.1 Strength of Intact Rock 515.8.2 Shear Strength of Rock Joints 525.8.3 Shear Strength of Rock Mass 525.9 ROCK DEFORMATION PARAMETERS 535.10 ROCK PERMEABILITY 545.11 <strong>WALL</strong> FRICTION AND ADHESION : 545.11.1 General 545.11.2 Wall Friction for Active Earth Pressure 55Calculations
Page 2 and 3: THE OF KONGLIBRARIESHong Collection
Page 4 and 5: © Hong Kong GovernmentFirst publis
Page 7: CONTENTSTITLE PAGE 1PageNo.FOREWORD
Page 11 and 12: PageNo.7.3 ASSESSMENT OF EFFECTS OF
Page 13 and 14: 1111. CANTILEVERED RETAINING WALLS
Page 15 and 16: 131. INTRODUCTION1.1 PURPOSE AND SC
Page 17: 15invaluable in the design of retai
Page 20 and 21: 18(a) Ultimate limit state - a stat
Page 22 and 23: 20durability of the wall during its
Page 24 and 25: 22specified to check the design ass
Page 26: 24Where geotextile filters are inte
Page 29 and 30: 27deterioration. In such cases, sur
Page 31 and 32: 294. VERIFICATION OF SAFETY AND SER
Page 33 and 34: 314.3.2 Design Calculation ModelsA
Page 35 and 36: 33(d) inaccurate assessments of loa
Page 37 and 38: 35(b) The range of possible behavio
Page 39 and 40: 375. GEOTECHNICAL PARAMETERS5.1 GEN
Page 41 and 42: 39parameters and an explanation of
Page 43 and 44: 415.5 SOIL SHEAR STRENGTH PARAMETER
Page 45 and 46: 435.5.4 Soils Derived from Insitu R
Page 47 and 48: 45strengths, laboratory tests are s
Page 49 and 50: 47tloading tests, pile tests and pu
Page 51 and 52: 490.64(y-/d) + 0.017forloosesand^ =
Page 54 and 55: 525.8.2 Shear Strength of Rock Join
Page 56 and 57: 54It should be noted that use of th
Page 58 and 59:
565.11.3 Wall Friction for Passive
Page 61 and 62:
596.6.1 GENERALThe lateral pressure
Page 63 and 64:
61without propping. The earth press
Page 65 and 66:
63where OCR = overconsolidation rat
Page 67 and 68:
65impermeable, this water may not d
Page 69 and 70:
67The trial wedge method is rather
Page 71 and 72:
69The compaction-induced earth pres
Page 73 and 74:
717. EFFECTS OF SURCHARGE AND SEISM
Page 75 and 76:
73or the presence of lateral suppor
Page 77:
75strength degrades under seismic e
Page 80 and 81:
78requirement to achieve accurate p
Page 82 and 83:
80inclined drain system, no positiv
Page 84 and 85:
82These should be connected to suit
Page 86 and 87:
84The purpose of the segregation cr
Page 88 and 89:
86for loose sands. In order to cate
Page 90 and 91:
which cover the various wall types.
Page 92 and 93:
909.2.4 Design Against Serviceabili
Page 94 and 95:
92fill to insitu ground.BS 8007 (BS
Page 96 and 97:
94considered as gravity retaining w
Page 98 and 99:
969.4.6 AestheticsThe guidance on a
Page 100 and 101:
989.5.3 Materials(1) Gabion Materia
Page 102 and 103:
100mesh is sufficiently rigid to su
Page 104 and 105:
102The wall stem and base slab of a
Page 107 and 108:
10511. CANTILEVERED RETAINING WALLS
Page 109 and 110:
107should be considered in the desi
Page 111 and 112:
109which case the requirement to li
Page 113 and 114:
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 and 166:
163LIST OF FIGURESFigureNo.p ageNo.
Page 167 and 168:
165No.p ageNo.30 Evaluation of Wate
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
Page 216 and 217:
214\ \\\\1 \ \\j 0(a) Deflected Sha
Page 218 and 219:
216(a) Idealised PressureDistributi
Page 220 and 221:
218OLegend :MinimumF t valuesCdaDip
Page 222 and 223:
220Continuous rock joint atthe base
Page 224 and 225:
222Location of Retaining Wall :Reta
Page 227:
225CONTENTSPageNo.TITLE PAGE 223CON
Page 230 and 231:
228should be satisfied for all ulti
Page 232 and 233:
230For intermediate groundwater lev
Page 234 and 235:
232advantages and economy can resul
Page 236 and 237:
234wall. Limit equilibrium methods
Page 239:
237LIST OF FIGURESFigureNo.PageNo.A
Page 242 and 243:
240* - -T7 = c'N.s e U«c + 0.5 Y '
Page 244 and 245:
242(a) Foundation at a Distance of
Page 247 and 248:
245GLOSSARY OF SYMBOLSAA 1cross-sec
Page 249 and 250:
247ff mG sa coefficient used in cal
Page 251 and 252:
249m ia coefficient used in calcula
Page 253 and 254:
251q cqdqfq n 'q uq u ituniaxial co
Page 255 and 256:
253 a ai> etc. angles at which pote
Page 257:
255GLOSSARY OF TERMS
Page 260 and 261:
258Residual soil. Soil derived from
Page 262 and 263:
260(Superseded by GEO Report No. 9)
Page 264 and 265:
262Report on the Rainstorm of Augus
Page 266 and 267:
264Sheung Shui : Solid and Superfic
Page 268 and 269:
266Muk Kiu Tau : Solid Geology (1:5
Page 270 and 271:
. u
show all

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

Create successful ePaper yourself

Delete template?

Save as template?