Abstract: In order to explore a new tilting correcting method of shallow foundation buildingin loess areas, a 2-story office building with uneven settlement in Lanzhou City was taken as the research object. After analyzing the causes of settlement, a new type of correction structure was proposed, consisting of inverted L-shaped beams added on both sides of the brick foundation and independent foundation diagonal lifting under the column, combined with a limit iteration lifting method. After verifying the bending, shear, and impact shear bearing capacities, the proposed scheme was implemented. Monitoring results show that the relative settlement at Q₁, Q₂, and Z₁ on the southwest side of the original building is relatively large, with a cumulative settlement of over 40mm and a local tilt rate of 0.7% at Q₁ and Z₁. After correction, the lifting amount of Q₁ and Z₁ are both 29 mm, reducing the tilt ratio to 0.17%, which meets the safety requirements of the specifications. The construction process was characterized by a short duration, simple procedures, and stable execution.

Key words: shallow foundation, tilting structure, inverted L-beam, tilting structure under column, limit iterative jacking, tilting effect