Research on New Reinforcement for Basic Foundation of Existing Buildings

It has become a novel and universal engineering problem that the new construction caused uneven foundation settlement of existing building foundations. This paper relies on the actual project that the tilt of existing buildings caused by a new tunnel. For the uneven settlement of existing building foundation, the reinforcement treatment is carried out. A new rapid reinforcement method of using steel pipe pile with H-beam is proposed, and the reinforcement mechanism of the method is clarified. And the reinforcing effects of the method are verified by field static load test and site monitoring data. The settlement laws of existing buildings in three stages, which are before reinforcement, reinforcement period, after reinforcement, are revealed. The rationality of the reinforcement method is fully demonstrated. This paper provides a fast, rational and effective reference method for solving similar engineering problems in the future.