A shield segment joint waterstop structure
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-04
- Publication Date
- 2026-07-17
AI Technical Summary
The existing water-stopping structure at the joints of tunnel segments is prone to leakage under external and internal water pressure, resulting in poor water-stopping effect, especially in the case of two-way water-stopping.
The structure employs a two-way water-stopping mechanism. By setting inner and outer rubber wing rings at the joints of the tunnel segments to form a cone angle with the sharp corners facing inward and outward, the clamping force of the rubber wing rings is enhanced. Combined with multiple lines of defense such as the ring joint force transmission liner, auxiliary sealing strip, water-swellable water-stop strip, and segment caulking, a progressive seal is formed.
It effectively improves the water-stopping effect under both external and internal water pressure, achieving a superior two-way water-stopping effect and enhancing the sealing performance of the shield tunnel segment joints.
Smart Images
Figure CN122407243A_ABST