考虑土体应力历史影响的沉降修正初探.pdfVIP

27 10 Vol.27 No.10 2006 10 Rock and Soil Mechanics Oct. 2006 2006) 12 1. 230027 2. 266031 e-lgp av e-p e-lgp ave-p a v e-p e-lgp TU 433 A Discussion of settlement modification considering stress history of soil mass 1 2 WANG Zhi-liang , SUN Xi-jie (1. College of Engineering, University of Science and Technology of China, Hefei 230027, China; 2. Qingdao Coast-defense Engineering Department, Qingdao 266031, China) Abstract: In layerwise summation method, e-lgp is superior to av and ep method; the reason is that it can be in consideration of the influence of soil stress history. But it is a pity that elgp method is rarely used in practical engineering because the related parameters are difficult to be determined. One thought to consider the influences of soil stress history in av and e-p method is given when lack of high pressure consolidation test data; and the corresponding concept of correction coefficient Ms is put forward. Besides, the approximate spans of Ms for different status soils are analyzed. Then, the calculated formula is developed. It is found that the results of av and e-p methods which are rectified with the correction coefficient are more accuracy and more closed to the e-lgp method. This method can be reference for engineers. Key words: soil mass; layerwise summation method (LST); stress history; correction coefficient; settlement 1