Tunnel Lining Insert Module With Thin Wall Panel
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Solution Overview
Problem
The installation of escape doors and similar modules in traffic tunnels is labor-intensive and prone to errors due to adverse conditions, requiring high precision and increased costs, especially because existing prefabricated structures are too thick, making them difficult to insert and seal properly.
Innovation Solution
A plug-in module with a wall panel having a thickness-to-height ratio of 1:10 to 1:20, allowing for easy insertion at an angle and precise fitting, enabling preassembly and testing outside the tunnel, reducing installation time and errors, and ensuring a gas-tight seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prefabricated structures with large thickness are used for escape doors, then functional requirements are met, but installation difficulty increases and precision requirements become extremely high
Solution Approach 1:
The escape door structure is divided into two separate components: a thick functional module (containing storage chamber, fan, fire protection wall) and a thin wall panel (closure element). The functional module is installed first in the recess, and the wall panel is attached to its front side. This segmentation allows the thick functional requirements to be met while the thin wall panel enables easy installation and sealing.
Solution Approach 2:
The installation approach transitions from installing a thick structure directly into the tunnel recess to a two-stage process: first installing the functional module in the recess, then attaching the wall panel to the front. This dimensional separation resolves the contradiction by allowing the functional thickness to exist in one dimension while the installation interface remains thin in another dimension.
2Ease of manufacture
If assembly is performed inside the traffic tunnel, then installation is completed in situ, but assembly errors increase and reliability decreases due to adverse conditions
Solution Approach 1:
The wall panel is pre-assembled with the functional module at a manufacturing location with optimal conditions (proper lighting, climate, assembly tools) before being transported to the tunnel. This preliminary assembly action ensures high reliability and accuracy, while the final installation in the tunnel is simplified to merely attaching the pre-assembled unit to the recess.
3Reliability
If thick prefabricated structures are installed in escape tunnels, then functional requirements are met, but gap dimensions increase and fire protection sealing becomes difficult
Solution Approach 1:
The structure is segmented into a thick functional module (for fire protection and storage) and a thin wall panel (for sealing and closure). The wall panel is attached to the front of the functional module, creating a thin profile that minimizes gap dimensions in the escape tunnel while maintaining all necessary fire protection functions in the recess.
Solution Approach 2:
Different parts of the structure have different thicknesses optimized for their specific functions: the functional module has large thickness for housing equipment and storage, while the wall panel has minimal thickness for sealing purposes. This local quality differentiation resolves the contradiction between fire protection requirements and gap minimization.
Data Source
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AI summary
The invention relates to an insertable module (11) for placement in a lining (15) of a traffic tunnel, wherein the insertable module (11) can be inserted into a recess (13) provided in the lining (15) and comprises a pre-assembled functional element (23) and a wall (19) on which the functional element (23) is arranged. The wall is a wall panel (19), wherein the ratio of the thickness (20) of the wall panel (19) to the maximum height (22) of the wall panel (19) is between 1:10 and 1:20, preferably between 1:15 and 1:20, and particularly preferably between 1:18 and 1:20.