Simulation of prestressed bridge transformed from simple-supported system into continuous system;

Three finite element models were established to analysis the stress of the anchorage zone of the external prestressed bridge,considering the function of angle iron,steel tie plate,external prestressed steel tube,reinforcement network and distributing reinforcement.

At present, prestressed bridge is the throat hub of the city roads, highways, railway lines.

Based on the analysis of rock slope stability,and the foundation mechanical model of non linear unipoium load was established,the formulas for stress and displacement of depth of z in a foundation were deduced by superposition principle in the plane perpendicular to the axis of the beam in prestressed anchor-Rope and groundsill structure.