Soil Mechanics for Unsaturated Soils phần 7 ppt

... AMONG VOLUMETRIC DEFORMATION COEFFICIENTS The constitutive equations or surfaces for unsaturated soils have been formulated and presented in three forms. In the elasticity form, the E, If, ... small deformations. The semi-empirical approach is more commonly used in conventional soil mechanics, and is used herein to formu- late the constitutive relations for unsaturate...

Ngày tải lên: 09/08/2014, 23:20

... saturated soils has commonly been estimated using this procedure (Bishop and Henkel, 1962). This theory has been extended to embrace unsaturated soils testing. For unsaturated soils, it ... used for saturated soils [i.e., Fq. (9.1)]. Therefore, the shear strength equation for saturated soils, Eq. (9.1), is applicable when the pore-water pres- sures are negative, prov...

Ngày tải lên: 09/08/2014, 22:24

... 64 64 64 66 67 67 68 69 70 70 70 70 71 73 74 77 77 77 79 80 81 82 83 84 86 86 86 88 88 90 91 93 95 97 97 99 99 100 104 105 1 07 1 07 108 110 110 110 ... 1. 072 4 1.1 477 10 1.2 276 1.3123 1.4022 1.4 974 1.5983 1 .70 51 1.8180 1.9 375 2.0639 2.1 974 20 2.3384 2.4 872 2.6443 2.8099 2.9846 3.1686 3.3625 3.5666 3 .78 14 4.0 074 30 4....

Ngày tải lên: 09/08/2014, 22:23

... 480.4 5 47. 5 615.4 549.4 479 .2 412.6 278 .7 270 .9 406.8 613.2 138.3 394.6 202.2 270 .5 338.3 406.3 476 .4 202.2 338.5 4 07. 8 473 .7 541.2 477 .1 4 07. 6 340 .7 109.6 3.0 143.5 498.3 ... 2 27. 5 2 97. 2 73 .1 208.3 278 .0 343.9 41 1.3 3 47. 6 277 .8 211.4 +71 .4 + 135.9 +68.6 -204.3 +68.8 + 136.6 +68.5 +68.8 +68.1 +69.5 +69.0...

Ngày tải lên: 09/08/2014, 22:24

... 4 .75 , 4 .76 , and 4 .77 . The soils were sampled in the field using Shelby tubes. Matric suction measumments on compacted soils have also been performed on a silt from Brazil (Fig. 4 .78 ). ... the driving potential for flow in that phase. This is equally true for saturated and unsaturated soils. 5.1.1 Driving Potential for Water Phase The driving potential for...

Ngày tải lên: 09/08/2014, 22:24

... Substituting Eq. (8 .78 ) into Eq. (8 .72 ) gives R, = 4/m;. (8 .78 ) (8 .79 ) Equation (8 .79 ) can be written in a compressed form by (8.80) collecting the soil properties into single ... the force equilibrium equations. Formulation for Two-Dimensional Flow The following derivation is for the general case of a her- erogeneous, anisotropic, unsaturated s...

Ngày tải lên: 09/08/2014, 22:24

... 70 .94 37. 86 71 .28 176 .95 72 .83 23.45 72 .55 16.62 73 .73 0.85 2 71 .29 176 .89 71 .58 314 .7 72.84 79 .04 72 .61 60.69 72 .58 33.89 3 71 .58 315.25 71 .99 453.53 72 .68 448.05 72 .59 120.3 72 .59 78 . 07 ... 72 .59 78 . 07 4 72 .68 448.05 72 .56 239.83 72 . 57 126.2 5 72 .58 3 47. 7 72 .55 204.53 6 72 .53 494.5 72 . 57 321.89 7 72.20 504.34 CHAPTER...

Ngày tải lên: 09/08/2014, 22:24

... 0 .70 2 0.040 0.126 0.033 0.263 DS 0.424 0 .70 0 DS 0.421 0.699 os 0.516 0.606 0. 177 0.082 0.158 OS 0.5 17 0.616 0.055 0. 076 0.052 0.101 os 0.511 0.609 os 0.514 0.609 DT 0.4 27 ... 0.516 0.5 67 0. 179 0.106 0. 171 OT 0.523 0. 571 0.0 37 0.0 57 0.024 0.060 Notes: “All indices have a negative sign, as described by the sign convention in Chapter 12. b“DS”...

Ngày tải lên: 09/08/2014, 23:20

... neering (ISSMFE, 1 977 ) has been used as a guide. How- ever, it has been necessary to extend some of the symbols for unsaturated soil mechanics. For example, the soil has two fluid ... in an unsaturated soil are (a - u,) and (u, - u,). The complete form of the stress state for an unsaturated soil can be written as two independent stress tensors. Fig...

Ngày tải lên: 09/08/2014, 23:20

... 2 67 268 269 270 272 273 275 277 279 282 283 284 363 379 429 433 air entry value 48 81 82 83 84 112 218 221 2 57 258 260 261 263 264 265 266 272 273 275 380 386 3 87 air passage ... Soil- water characteristic curve 45 67 74 98 111 114 115 116 124 126 128 129 130 134 136 2 57 341 368 369 370 371 372 375 376 377 378 381 382 386 3 87 388 393 drying portion...

Ngày tải lên: 09/08/2014, 23:20