What are the Areas of Application of Lining Trolley Plug Steel Template?

A lining trolley plug steel template, also often referred to as a tunnel lining steel formwork or shutter, is a specialized piece of equipment crucial for constructing the inner lining of tunnels and other underground structures. Its primary applications revolve around ensuring the precise shape, dimensions, and quality of concrete linings.

Lining Trolley Plug Steel Template Application

Tunnel Construction (Primary Application): This is the most significant area of application.

In-situ Concrete Lining: For tunnels where the concrete lining is cast directly in place, large steel formwork systems mounted on trolleys are used. These trolleys move incrementally as the tunnel progresses, allowing for continuous concrete pouring and curing.

Precast Segment Manufacturing: For tunnels built with precast concrete segments (common in TBM tunneling), custom steel molds (templates) are used in factory settings to produce each segment with high precision. These segments are then transported to the tunnel site and assembled.

Various Tunnel Shapes: These templates are custom-designed for different tunnel geometries, including circular, horseshoe-shaped, egg-shaped, or other irregular cross-sections.

Culverts and Other Underground Sections: Beyond tunnels, these steel templates are also used for concrete linings in:

Culverts: Structures that allow water to flow under roads, railways, or embankments.

Underground Passages/Galleries: For utility conduits, pedestrian walkways, or other subterranean infrastructure.

Hydropower and Water Conservancy Projects:

Diversion Tunnels: Tunnels used to divert water for hydropower generation or other water management purposes.

Water Conduits: Lined channels or pipes for transporting water.

Key Functions and Advantages that Drive These Applications:

Shaping the Tunnel Lining: The primary function is to define the exact geometry of the structure's inner surface, including its cross-section and any features like recesses for utilities or grout holes.

Ensuring Accuracy and Quality: Steel's high rigidity and precision are essential for achieving a smooth, consistent concrete finish and ensuring that precast segments fit together perfectly.

Durability and Reusability: Custom steel templates are designed for multiple uses, making them cost-effective for long projects.

Facilitating Construction: These trolleys and templates often integrate features that aid the construction process, such as:

Stripping mechanisms for efficient formwork removal.

Integrated heating/cooling for concrete curing control.

Walkways and access points for workers.

Guidance systems for alignment.

Improving Efficiency and Speed: The use of lining trolleys with steel templates significantly speeds up the concrete lining process compared to manual methods.

Cost-Effectiveness: While the initial investment can be high, the reusability and efficiency gains make them cost-effective for large-scale projects.

In essence, the lining trolley plug steel template is a vital tool in modern civil engineering, particularly in the construction of subterranean infrastructure where precision, durability, and efficiency are paramount.