Pipe joint shear key
CN224694075UActive Publication Date: 2026-08-28CHINA CONSTR FOURTH ENG DIV CORP LTD
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Patent Information
- Application Number
- CN202521353820.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-06-27
AI Technical Summary
Technical Problem
现有的顶管接头通常未设置抗剪键，导致在软土地区，尤其是穿越软硬地层交界面（如河涌）时，接头变形过大，可能引发防水失效
Benefits of technology
本实用新型通过凸块与凹槽的嵌合设计显著增强了接头的抗剪能力，能够有效抵抗软土地层中的不均匀沉降，该结构提高了接头的整体性和稳定性，防止因过大变形导致的防水失效问题，这种连接方式使管节对接更加精准可靠，简化了施工工艺，该抗剪键结构适用于各种地质条件，特别是软硬地层交界面等复杂工况，具有广泛的适用性。整体结构简单实用，既保证了工程安全性，又提高了施工效率。
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Smart Images
Figure CN224694075U_ABST
Abstract
The utility model discloses a kind of top pipe joint shear keys, including the adjacent first pipe section and second pipe section along top pipe tunnel longitudinal cooperation, the joint cooperation surface of the first pipe section and the second pipe section is provided with at least one shear connection structure, the shear connection structure includes protruding block and recess that mutually embed. The embedding design of protruding block and recess significantly enhances the shear capacity of joint, can effectively resist uneven settlement in soft soil layer, the structure improves the integrity and stability of joint, prevent waterproof failure problem caused by excessive deformation, this connection mode makes pipe section butt joint more accurate and reliable, simplify construction technology.
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