Experimental study on coefficient of consolidation of land subsidence
XU Hai-yang1, 2, ZHOU Zhi-fang1, GAO Zong-qi3
(1. College of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China; 2. School of Resource and Environment, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China; 3. CCCC First Harbor Consultants Co., Ltd., Tianjin 300222, China)
Abstract：Based on the relationship among the void ratio, hydraulic conductivity and effective stress, a formula for the coefficient of consolidation and effective stress is derived. Using a self-developed test equipment to simulate land subsidence and through the analysis of test data, it is evident that the coefficient of consolidation is not constant but becomes small under compression. Considering the non-linear coefficient of consolidation, the Terzaghi’s theory is modified. Analytic solutions are compared with the measured values. The results show that the calculated values of ground consolidation settlement are more accurate by means of the modified Terzaghi’s theory of non-linear coefficient of consolidation.
徐海洋，周志芳，高宗旗. 地面沉降过程中固结系数的试验研究[J]. 岩土工程学报, 2011, 33(12): 1969-1973.
XU Hai-yang, ZHOU Zhi-fang, GAO Zong-qi. Experimental study on coefficient of consolidation of land subsidence. Chinese J. Geot. Eng., 2011, 33(12): 1969-1973.
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