Research Of Stability Of High Rock Slope Forced By An Impact Loading

The research of construct technics of deep-water foundation is one of the marginal problem. For a bridge deep-water foundation which local in high rock slope, some complex geologic condition such as the rock structure and water force should give the corresponding discussion. In practical engineering, reasonable solution of some important and key problem in common, such as the stability of side slope in the explosion of water conservation construction or vibration by large machine; the local stability problem existed in water foundation which from coupling vibration between bridge and vehicle etc., require the thoroughly research on the foundation dynamic mechanics of deep-water and high rock slope under impacting loading from the theories, numerical simulations and experiments.This thesis mainly studied for the stability of high rock slope and jetting of pile forcing by an large impact load combine with hydrostatic uplift when the bridge deep-water foundation was constructed. Firstly the statics stability theory based on the method of limit equilibrium and strength reduction finite element method is been introduced, the safe coefficient in rock slope sited in Liushui river(xiangyuⅡline) is given after numerical simulations. Then the base theory in impact dynamics including the choice of rock dynamics constitutive, impact vibrate theory and something about stress wave transmit in rocks been expounded. The influence exist in foundation when force by hydrostatic uplift is also introduced. Finally using the explicit dynamics finite element software—LS-DYNA to analysis the influence from impact load when in the process of large diameter pile hole. The consider factor including the high of sinker, drill deeper and the number of impact, and then get the conclusion about the slope effect by impact load base on some factor such as stress level and the vibrate velocity of particle. Given the reference in the choice of mechanism and technics process when an large bored pile was being constructed. Also we can build an foundation in this field through the compare between static and dynamics in the future.