Experimental study on behaviour of secondary consolidation of soft soils under repeatedly dumped loads
ZHU Jungao 1 2, FENG Zhigang 1 2
1.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai University Nanjing 210098 China 2.Geotechnical Research Institute Hohai University Nanjing 210098 China
Abstract：Based on a number of oedometer tests on 13 soil samples,the influence of repeated loading on the secondary consolidation properties is investigated.It is found that with the increase of consolidation pressure p,the secondary consolidation coefficient C■ increases firstly to a maximum value and then decreases under initial loading,but the consolidation pressure corresponding to the maximum value is not equal to the preconsolidation pressure.It is also revealed that with the increase of p,C■ decreases under the first reloading and increases after 35 cycles in overconsolidated state.With the increase of loading cycle number,C■ decreases significantly.The load ratio △p/p has significant effects on C■.Experimental findings and results are significant to the settlement control of soft soil ground.
朱俊高；冯志刚；. 反复荷载作用下软土次固结特性试验研究[J]. 岩土工程学报, 2009, 31(3): 341-345.
ZHU Jungao 1 2, FENG Zhigang 1 2. Experimental study on behaviour of secondary consolidation of soft soils under repeatedly dumped loads. Chinese J. Geot. Eng., 2009, 31(3): 341-345.
