Semi-rigid pipe joint for immersed tunnel

The invention relates to the technical field of pipe joints for immersed tunnels, in particular to a semi-rigid pipe joint for an immersed tunnel. The semi-rigid pipe joint for the immersed tunnel comprises a pipe joint body, wherein the pipe joint body is formed by a plurality of pipe joint sections in a splicing mode, the pipe joint sections are connected end to end, a tenon structure is arranged between every two adjacent pipe joint sections, a plurality of prestressed ducts are arranged in the pipe joint body in the circumferential direction of the pipe joint body, prestressed steel beams which are used for carrying out prestressed degree adjustment on the pipe joint sections correspondingly penetrate through the prestressed ducts, and prestressed anchorage devices are arranged at the two ends of the pipe joint body. Due to the fact that the design of the prestressed steel beams is adopted, the pipe joint sections can be connected in series, the pipe joint sections can be connected in series to form a whole in a splicing mode, and the pipe joint body can have a certain flexibility on the premise that the overall rigidity is not lost; the semi-rigid pipe joint for the immersed tunnel has higher degree of stress safety and higher degree of waterproof safety compared with a section type flexible pipe joint, and has better capacity of adapting to foundation deformation compared with an integral rigid pipe joint.