| Structure of soft soil is one of soil fundamentality,A lot of tests andpractice indicate that structure has a great influence upon rheology.Studyingthe influence has much meaning on forecasting sedimentation of highway,subway and runway after they are built.They are embodied as follows: Rheology is a distortional course of soil with time,when it bears exteriorstress.Because few scholars study the influence that structure of soil has on itin Fuzhou,SO,secondary consolidation and rheology experiments are carriedout in this paper,then the formula of secondary consolidation sedimentation andthe damnificational rheology model are put forward. Firstly,secondary consolidation experiments of the undisturbed sampleand remolded sample are carried out.And its conclusion shows that secondaryconsolidation coefficient before structure destroyed is different from it afterdestroyed.Then,the formula of secondary consolidation sedimentation is putforward,and is put into practice,its conclusion indicates the formula can beused to forecast sedimentation after the building is built. Secondly,different stress tri-axial tests are carried out of the undisturbedsample and remolded sample.And the relation of stree-strian and time isanalyzed.After that,the damnificational rheology model is put forward basedon damnification,and model principle,then,all of the parameters are workedout.And the model rationality is testified by being put it into practice. Finally,inner structure of the undisturbed sample and remolded sample arescanned by using the electronic microscope.Then,the research proves thestructure is of the undisturbed sample tends to it of remolded sample after thestructure is destroyed.At last,microcosmic distortion mechanism of rheology isanalyzed. |
