Consolidation Settlement e H e o VOIDS e f VOIDS H o H f 1 - PDF document

Consolidation Settlement

 e  H e o VOIDS e f VOIDS H o H f 1 SOLIDS 1 SOLIDS

2.10 � 1.21 � 0.89 � � � log 8 � 0.99 ⁄ log 800 100 2.10 Compression Index 1.21 10 100 1000

2.10 � 1.10 � 1.00 log 10 � 1.00 � � � � 1.00 ⁄ log 1000 100 1 2.10 Compression Index 1.10 10 100 1000

0.38 � 0.14 � 0.24 � �� � log 8 � 0.27 ⁄ log 800 100 0.14 0.38 10 100 1000

� �� � 0.38 � 0.10 � 0.28 � 0.28 ⁄ log 800 80 1 0.10 C c  Compression Ratio 0.38 10 100 1000

 = 125 pcf 20 ft Surcharge  = 100 pcf Silty Sand 25 ft  ´ = 50 pcf, C c  = 0.25 20 ft

 = 125 pcf 20 ft Surcharge  = 100 pcf Silty Sand 25 ft 10 ft  ´ = 50 pcf, C c  = 0.25 10 ft

 = 125 pcf 20 ft Surcharge  ´ = 50 pcf, C c  = 0.25 20 ft  = 100 pcf Silty Sand 25 ft

 = 125 pcf 20 ft Surcharge 10 ft  ´ = 50 pcf, C c  = 0.25 10 ft  = 100 pcf Silty Sand 25 ft

Normally-Consolidated Soils   C             top top bot bot c H log log   vo vo vo vo   C            top top bot bot c log log   vf vf vf vf

 = 125 pcf 20 ft Surcharge  ´ = 50 pcf, C c  = 0.25 20 ft  = 100 pcf Silty Sand 25 ft

 = 125 pcf Surcharge 20 ft  ´ = 50 pcf, C c  = 0.25 15.45 ft  = 100 pcf Silty Sand 25 ft

F INAL G RADE 455.0 Compacted Fill,  = 125 pcf 447.0 444.0 Clayey Sand,  = 120 pcf,  ´ = 60 pcf 440.0 10 ft NC Sandy Clay,  ´ = 60 pcf, C c  = 0.25 A 425.0

OCM (Holtz & Kovacs, An Introduction to Geotechnical Engineering , 1981)

(Holtz & Kovacs, An Introduction to Geotechnical Engineering , 1981)

(Holtz & Kovacs, An Introduction to Geotechnical Engineering , 1981)

Over-Consolidated Soils    C C              bot bot top top r c H log log   p p p p   C            bot bot top top r log log   vo vo vo vo   C            bot bot top top c log log   vf vf vf vf For cases where the OCM is constant with depth

(Holtz & Kovacs, An Introduction to Geotechnical Engineering , 1981)

Over-Consolidated Soils    C C                    bot bot bot top top top r c H log log p p p p p p s p   C                  bot bot bot top top top r log log vo vo vo vo vo vo s o   C                  bot bot bot top top top c log log vf vf vf vf vf vf s f For cases where the OCM is not constant with depth          s d dz s d dz s d dz p p o vo f vf