High Fill Abutment

With the rapid increment of the subgrade's fill height, the effect of the earth mass on the viaduct's substructure leaps to a dominating position. The thesis aims mainly at how to build modem bridges economically, artistically and safely. In view to the highly filled-up ribbed-slab abutment in mountain ridge and countless hillock areas, the thesis proposes a new thought on design and optimization, while discussing the former design and calculating theory. Applying the space integral finite element analysis method and considering the non-linearity of the soil mass, the thesis verifies the results concluded from the plane short-cut calculating theory. Numerical analysis method mentioned here can cast a brick to attract jade on calculating the substructure of bridges and will advance toward maturity in pace with the inceasing growth of finite element.