Dodecagonal segment for shield tunnel construction and segment lining structure

Abstract

The invention discloses a dodecagonal segment for shield tunnel construction. Two long bevel edges which are both splayed are arranged on the edges of the two transverse ends of the dodecagonal segment, a long transverse edge, a short bevel edge, an inwards-sunken transverse edge, a short bevel edge and a long transverse edge are sequentially formed from one end to the other end of the edge, with a greater transverse length, in the edges of the two longitudinal sides of the dodecagonal segment, a short transverse edge, a short bevel edge, an inwards-sunken transverse edge, a short bevel edge and a short transverse edge are sequentially formed from one end to the other end of the edge, with a smaller transverse length, in the edges of the two longitudinal sides of the dodecagonal segment. The invention also discloses a segment lining structure assembled by dodecagonal segments, and the adjacent dodecagonal segments are embedded and limited. According to the dodecagonal segment with a specific shape, the shape has a mounting guide function, so that the segment can be easily positioned; the dodecagonal segment lining structure can be continuously tunneled and spliced, so that the construction efficiency and the overall lining rigidity are remarkably improved.

Description

technical field [0001] The invention relates to a tunnel segment and a segment lining structure, in particular to a dodecagonal segment and a segment lining structure for shield tunnel construction. Background technique [0002] With the needs of China's railway transportation, urban subways, water conservancy and hydropower, urban underground engineering, and national defense, the construction of tunnel engineering has developed rapidly. In particular, the shield segment lining structure required by a large number of cross-river and sea-crossing tunnels is getting higher and higher, not only requiring simple production, fast installation, but also high strength and high water resistance. At present, the segments used at home and abroad include rectangular segment, trapezoidal segment, hexagonal segment, wing segment, tetradecagonal segment and so on. Among them, the rectangular segment requires many molds, such as standard block, connecting block, and capping block, which ...

AI Technical Summary

Problems solved by technology

Among them, the rectangular segment requires many molds, such as standard block, connecting block, and capping block, which are costly, and the assembly is generally connected by bolts, and the construction speed is slow; trapezoidal segment, hexagonal segment and ten Quadrilateral segments only need one mold and can achieve continuous advancement, but when trapezoidal segments, hexagonal segments and tetradecagonal segments are used for assembly, the connection between segments in the resulting lining structure is relatively weak, and Easily deformed and cracked

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