Abstract:An office building is constructed on a backfilled stratum located at the bank of a reservoir. Because of unsuitable ground treatment and great seasonal water level change of the reservoir,the building occurs nonuniform settlement. Making use of the building¢s inverted nonuniform settlement caused by reinforcement,combining the micro-steel-piles which are constructed by stages and areas,the rectification of the tilted building has been successfully conducted;and the foundation of the tilted building has been reinforced. On the basis of engineering practice,a method for reinforcement of building foundation and rectification of tilted building with micro-steel-piles is introduced. The effects of the reinforcement of the building foundation and rectification of the tilted building with micro-steel-piles are also illuminated using the observed data. It is expected that this can provide references for similar projects.