Embedded pin groove structure for connecting shear pin on tunnel segment and construction method thereof

The invention relates to an embedded pin groove structure for connecting a shear pin on a tunnel segment, which comprises a pin groove body, a side plate and a first shear-resisting plate, wherein thepin groove body is embedded in the tunnel segment and is internally provided with a groove adapted to the pin head of the shear pin, and the mouth of the groove is arranged on the corresponding ringsurface of the tunnel segment; the side plate is formed at the end part of the pin groove body and surrounds the edge of the mouth of the groove and is also arranged on the corresponding ring surfaceof the tunnel segment; and the first shear-resisting plate is fixedly arranged at the end part of the pin groove body and is arranged at the bottom of the groove, and is embedded in the tunnel segment. The embedded pin groove structure provided in the invention is used for forming a groove connecting the shear pin on the tunnel segment and can be applied to a general segment with a thickness of 350 mm, the shear-resisting b