Patent ID: 11965420
Assignee: NORTHEAST ELECTRIC POWER UNIVERSITY
Field: Civil engineering (Other fields)
Classification: CPC E  Y | IPC E

Claim 2:
3. A construction method of a shield tunnel segment structure, comprising the shield tunnel segment structure of claim 1 and comprising the following steps:
sequentially splicing segment blocks in a circumferential direction to form a first section of a closed annular segment structure, wherein the first section of the annular segment structure is formed with first annular inner grooves and first annular outer grooves;
sequentially splicing the first annular inner grooves and the first annular outer grooves along the first section of an annular segment structure in the circumferential direction to form middle sections of closed annular segment structures, wherein the middle sections of the annular segment structures are formed with second annular inner grooves and second annular outer grooves, and a diameter of front sides of the middle sections of the annular segment structures is less than a diameter of rear sides thereof; and
sequentially splicing the second annular inner grooves and the second annular outer grooves along the middle sections of the annular segment structures in the circumferential direction to form an end section of a closed annular segment structure, wherein diameters of a front side and a rear side of the end section of the closed annular segment structure are the same.