Abstract: An offshore wind power single pile-friction wing composite foundation is provided, which includes a single pile and a friction wing being connected to the single pile through the force-conducting pipe, the tapered transition section of the single pile penetrates deep into the bearing stratum of the seabed, the force-conducting pipe of the friction wing located in the bearing stratum is in close contact with the tapered transition section of the single pile, the side wing of the friction wing is connected to the outer wall of the force-conducting pipe, and the ring wing is arranged inside the included angle of the side wing. There is a thorough structure in the axial direction of the friction wing, having convenience for embedding the bearing stratum of the seabed; the side wing and the ring wing support each other structurally to ensure the structural stability of the friction wing.

Abstract: A test method based on a test system for five-dimensional space effects of ground surface settlement caused by dual-mode shield construction is provided. First, manufacturing a formation similarity material model; then, laying ground surface monitoring points in longitudinal and transverse direction; installing a shield machine model, and performing shield construction, the shield machine model adopts a double-shield body mode; performing five-dimensional monitoring during shield construction; designing an observation method for ground surface settlement data in step length and time dimension, and acquiring five-dimensional data in combination with three-dimensional scanning; and finally, performing deformation information processing according to the monitored data, so as to realize an acquisition of the five-dimensional data.