4、 27.underconsolidated soil欠固结土 28.zonal soil区域性土 29.soft clay软粘土 30.expansive (swelling) soil膨胀土 31.peat泥炭 32.loess黄土 33.frozen soil冻土 三. 土的基本物理力学性质 1.cc compression index 2.cu undrained shear strength 3.cu/p0 ratio of undrained strength cu to effective overburden stress p0 (cu/p
5、0)NC ,(cu/p0)oc subscripts NC and OC designated normally consolidated and overconsolidated, respectively 4.cvane cohesive strength from vane test 5.e0 natural void ratio 6.Ip plasticity index 7.K0 coefficient of “at-rest ”pressure ,for total stressesσ1 andσ2 8.K0’ domain for effe
6、ctive stressesσ1 ‘ andσ2’ 9.K0n K0 for normally consolidated state 10.K0u K0 coefficient under rapid continuous loading ,simulating instantaneous loading or an undrained condition 11.K0d K0 coefficient under cyclic loading(frequency less than 1Hz),as a pseudo- dynamic test for K0
7、 coefficient 12.kh ,kv permeability in horizontal and vertical directions, respectively 13.N blow count, standard penetration test 14.OCR over-consolidation ratio 15.pc preconsolidation pressure ,from oedemeter test 16.p0 effective overburden pressure 17.p s specific cone penetra