Abstract：A new simplified incremental formula for evaluating the pore pressure of the saturated sands under the anisotropic consolidation was presented by using the dynamic triaxial tests.First,the test results indicated that the suitable form for describing the variation of the pore pressure due to the anisotropic consolidation was to use the power function of kc-1 to establish the relation between the relative increment of the pore pressure,?U/U 0,and the increment of the consolidation ratio,kc-1,i.e.,?U/U 0 =1,bC1,a(kc ?1)C.The coefficient C1,b was far away from 1,meaning that the pore pressure increment decreased rapidly when kc was near 1 and then decreased slowly.The power function of kc could not simulate the situation because in this case,the pore pressure increment was in nearly direct proportion to kc within 1<kc<3.The coefficient C1,a was 0.20-0.50 for two kinds of sands in the paper,which indicates that the pore pressure for kc=2 was 20%-50% less than that for kc=1.Finally,the comparison between the tests and calculations indicated that the new formula presented here could practically and effectively describe the rising of the pore pressure both for uniform and random loads.
孙锐；袁晓铭；. 非均等固结下饱和砂土孔压增量简化计算公式[J]. 岩土工程学报, 2005, 27(9): 1021-1025.
SUN Rui, YUAN Xiaoming. Simplified incremental formula for estimating pore water pressure of saturated sands under anisotropic consolidation. Chinese J. Geot. Eng., 2005, 27(9): 1021-1025.
