Mountain High Fill Embankment Settlement Monitoring And Stability Of The Numerical Simulation Analysis

With the rapid development of the economy in China, the construction in. Midwest regions is quickening evidently, deep filling and excavation is very common in these regions. The settlement of High filleded sub-grade is larger and lasting a longer time than common ones, and it needs a highly bearing capacity of ground. So, settlement deformation and stability of high filleded sub-grade is quite important to both construction and operation, and how to predict dangerous zones or the probable damage situation by numerical simulation or analyzing the stress effect or response of structure based on basic theory is important to construction.This thesis based on the former fruit, combines theory analysis with engineering practice, The primary results are gained as follows:(1) Summarizing methods for settlement of high filleded sub-grade calculation, putting forward the theory of applying Mohr-Coulomb elasto-plast-ic yield criterion to settlement calculation.(2) Considering the settlement monitoring of a Freeway, methods about disposal of settlement monitoring and notices in site are discussed in detail.(3) Through the calculation of some representative sections by the FEM method, this dissertation gives variety laws of stress field, displacement field and stress level at different construction stages and different zones.That applying Mohr-Coulomb elasto-plastic model combined with the FEM analysis software is appropriate is concluded.(4) With the FEM analysis software, simulating the staged-construction of the selected two sections is implemented. The results of simulation and actual measurement are consistent in trend, and the error rate is within the accuracy of engineering, which are obtained.(5) An analysis method for slope safety factor by strength reduction FEM is presented, which proves when the material properties based on M-C flow criterion is considered, results of applying associated flow criterion for rock-soil type are much larger, and results of applying non-associated flow criterion for are much smaller.