一种隧道衬砌加固构造

By setting a combination of channel steel plates and UHPC layers on the tunnel lining, the problem of unreliable connection between the steel plates and the lining is solved, the load-bearing capacity and impermeability of the tunnel lining are enhanced, and a reliable reinforcement effect and self-healing function are achieved.

CN224515194UActive Publication Date: 2026-07-17XIAMEN ROAD & BRIDGE SURVEY & DESIGN INSTITUTE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIAMEN ROAD & BRIDGE SURVEY & DESIGN INSTITUTE CO LTD
Filing Date
2025-08-26
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing tunnel lining reinforcement methods, the connection between the steel plate and the lining is unreliable, and the adhesive has poor durability, leading to interface peeling and affecting the reliability of the reinforcement.

Method used

Channel-shaped steel plates are used, spaced along the longitudinal direction of the tunnel lining, and fixed with anchor bolts and nuts. Combined with the UHPC layer, a reliable connection interface is formed. The channel-shaped steel plates serve as the overall load-bearing components and the template for the UHPC layer, and the anchor bars connect the tunnel lining and the UHPC layer.

Benefits of technology

It improves the load-bearing capacity of the tunnel lining structure, avoids interface peeling caused by adhesive aging, enhances the reliability of the connection, and prevents water seepage on the tunnel lining surface through the high impermeability of UHPC, making it suitable for self-healing filling of cracks or holes.

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Abstract

本实用新型公开了一种隧道衬砌加固构造，包括沿隧道衬砌纵向间隔设置的若干组槽型钢板，所述隧道衬砌的表面固定植入有若干锚栓，所述锚栓穿过所述槽型钢板并通过螺帽配合将所述槽型钢板固定在隧道衬砌的表面，所述槽型钢板的凹槽处与所述隧道衬砌的表面配合形成了填充空间用于填充UHPC层。本实用新型提供一种隧道衬砌加固构造，槽形钢板既可作为整体受力构件，也可作为UHPC层填充的模板，基于UHPC层优越的超高强特性与槽型钢板形成组合受力构件，UHPC层与隧道衬砌通过锚筋和锚栓连接，槽型钢板与UHPC通过锚栓连接，可使连接界面粘结更可靠，避免胶粘剂老化导致界面剥离影响加固的可靠性，经加固处置后增强隧道衬砌结构的承载能力。
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Claims

1. A tunnel lining reinforcement construction, characterised in that: The system includes several groups of channel-shaped steel plates spaced longitudinally along the tunnel lining. Several anchor bolts are fixedly embedded in the surface of the tunnel lining. The anchor bolts pass through the channel-shaped steel plates and are fixed to the surface of the tunnel lining by engaging with nuts. The grooves of the channel-shaped steel plates cooperate with the surface of the tunnel lining to form a filling space for filling the UHPC layer. The anchor bolts include several groups spaced along the length of the channel-shaped steel plates. An anchor bar for connecting the tunnel lining and the UHPC layer is installed between two adjacent groups of anchor bolts. The channel-shaped steel plates are wavy channel-shaped steel plates, and the anchor bolts are inserted at the troughs of the waves. The spacing between two adjacent groups of channel-shaped steel plates is 1m.

2. A tunnel lining reinforcement construction as claimed in claim 1, characterised in that: The channel steel plate has a thickness of 6-10mm, a width of 300-500mm, and a height of 50-100mm.

3. A tunnel lining reinforcement construction as claimed in claim 1, characterised in that: The outer surface of the channel steel plate is coated with an anti-corrosion coating.