Large-settlement pile foundation and reinforcing method

The invention discloses a pile foundation with large settlement and a reinforcing method. The pile foundation mainly comprises a bearing platform, a bearing layer, a first cast-in-place pile, a second cast-in-place pile and an inclined pile. The bearing layer is positioned below the bearing platform; the upper ends of the first cast-in-place piles are fixedly connected with the bottom of the bearing platform, and the lower ends extend to a bearing stratum; the upper end of the second cast-in-place pile is fixedly connected with the bottom of the bearing platform, and the lower end extends to the bearing stratum; the inclined upper ends of the inclined piles are fixedly connected with the second cast-in-place piles and the bearing platform, and the lower ends extend to a bearing stratum. According to the reinforcing method of the scheme, the cast-in-situ bored piles and the inclined piles are combined to form the combined pile foundation, in the construction process, the construction reliability is improved, t