Tunnel Formwork

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Products Introduction & Application:

● Keep suitable formwork strength, make the vault and side wall be smooth in the secondary lining operation.

● Limitedly analysis and calculate the stress to optimize the structure, which can guarantee the strength and stiffness, and    also reduce the steel consumption and construction cost.

● Implement standardization renovation, use standard component, promote its versatility and improve repeated utilization    factor.


Features:
①Good concrete quality
 With full steel materials, high load bearing capacity and stiffness is achieved, that makes perfect concrete surface.
②High-speed of installation and removal of the form
 The formwork is fully hydraulic, with hydraulic cylinder to prop & strip, and lock mechanically.
③Easy operation and safety


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Q:What is the concrete construction of the tunnel invert
It is not required to ensure the appearance of the concrete, is the high pressure jet, the rapid solidification type.
Q:The small side wall of the small side wall and inverted arch in the high speed tunnel
Die casting. Install the inverted L hanger on the side wall.
Q:How to arch the arch concrete pouring
Two concrete tunnel lining, template is used according to the size and shape of the tunnel design custom-made, I-beam welded frame, welded steel plate, known as the "two trolley liner" (hydraulic jack lifting and installation of steel wheel moving on the rail), is generally the length of 9~12m, concrete pouring pump concrete.
Q:What is the role of the tunnel formwork trolley? What is the use of template trolley?
The car is often used in the construction of hydraulic tunnel, the tunnel is not allowed to have concrete construction longitudinal joints, in the hydraulic tunnel span is large
Q:When the tunnel fight, there is no provision for the number of meters hit
Fixed strip: the use of additional reinforcement fixation; special fixture fixed; the wire and the fixed template (Figure 2).
Q:What are the safety awareness of the tunnel lining formwork trolley?
Second, check the obstacles before starting, the process of attention to observe at any timeWire, wind
Q:What is the width of a ring in a tunnel
The car is generally long 9m can be a one-time pouring, a ring is a pouring two lining length
Q:Tunnel steel arch behind the steel mesh after a layer of fine iron wire mesh what effect is there?
3, advance small catheter grouting small catheter with diameter of phi 32-50mm steel pipe, the tip of the tube and tube holes for special processing. The first row with drill drilling pipe. Row spacing is 30cm, fan shape, elevation of 5 degrees to about 8 degrees. The length is 2.25m, a single fluid grouting (cement) or double grout (cement water glass slurry). Adjust the grouting pressure according to the soil.
Q:On the interpretation of the specialized words in tunnel
Bias: refers to the formation of the tunnel, resulting in uneven pressure. To provide you with a few books you go to see the explanation. The site is easy to understand.
Q:How to set the location of the tunnel trolley,
The trolley positioning, the first to the two lining trolley running mileage, and positioning, positioning process will have been completed two off the top two tight lining lining, free end positioning first center point positioning control of elevation and with a plumb line (top surface elevation is equal to the length of the plumb line + if the mileage of two the center point of elevation can be lining),

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