Application of complex grouting method in reinforcement treatment of pile foundations;

Summary on reinforcement treatment work of one building complex;

Foundation reinforcement treatment for enlargement in floor number of building;

This paper analyzes in details the crack causes of the main girder in an engineering,and introduces the strengthening treatment and the construction methods.

Taking practical prestressed pipe pile as example the reasons caused the deviation of pipe piles are analyzed;at the same time according to the various geological conditions and deviation degrees different strengthening treatments are introduced,which include adding reinforced concrete core,pouring concrete-filled steel tubes and static-bolt pile and acquire good treatment effect.

The stability against sliding of foundation rock is computated by means of rigid-body limit equilibrium analysis as the principal method, and by diversified numerical analysis method as supplementary, and several strengthening treatment schemes are compared.