Tunnel-lining formwork system

Procedure

First, the trolly is fully executed at the project site by the assembly team of Medhat Company and is ready to install the shell and shutters.

The slab is installed on the trollies’ upper part and the shutters on both sides with the help of cranes and log screw connections.

In self-traction forms, the forms are moved on rails or on the ground through a hydraulic or an electric motor.

The power pack system control set is installed on the trolly in the outer part so that the control operation can be performed easily.

The power pack system control set is installed on the trolly in the outer part so that the control operation can be performed easily.

In the tunnel lining form, the opening and closing of the shutters is done using hydraulic sylinder.

The hydraulic sylinder used in the trolly bases allow the formwork to be adjusted to the desired position, as well as assembly and separation of the formwork after concreting.

After each concreting step, first, the shutters are collected by hydraulic sylinder and then the shell assembly is settled by the base props.

Design and calculation of tunnel form according to the pressure on the formwork wall depends on various conditions such as: tunnel diameter, concrete thickness, execution restrictions, vehicles transit, cross section, concreting speed, ambient temperature and other factors.

The tunnel lining formwork is fully assembled at the factory during production to eliminate possible problems before shipment.

The forms are fully executed by the assembly team of Medhat Company to identify and eliminate possible problems during the work.