tunnel formwork system for Building Construction

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Building Tunnel Formwork：

A compositional steel formwork system mainly used in the building which has regular structure

without beams, the excellent formwork system can make the integral pouring for the wall & slab

easily achieved.

Characteristics:

◆ No assembling, easy operation with formed formwork.

◆ High stiffness, make perfect shape for concrete.

◆ Repeatedly turnover is available.

◆ Widely applied range, such as building, bridge, tunnel, etc.

tunnel formwork system for Building Construction

Q:The arch and the arch of the tunnel: Tunnel arch wall refers to both sides of the tunnel wall and the top of the arch, the tunnel arch wall is generally the use of a template trolley.

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:I would like to know the safety awareness of the tunnel lining formwork trolley Prawns to help answer oh: Second, check the obstacles before starting, the process of attention to observe at any timeWire, wind

Q:When the two lining of the tunnel is used as the lining concrete of the two, how to lay the trolley? Please kindly explain steps.: If the template comparison rules, the design center line directly, that is, the center of the car can be, and then measured elevation and the design elevation of the introduction of the real distance from the real point of the vehicle

Q:What are the reasons for the two lining concrete lining of the tunnel?: (4) improper concrete mix, segregation, depending on the template part of the lack of slurry or template serious leakage;(5) no watering wood template wet, water bonding or early form removal, Chaimo missing edge off angle, resulting in reinforcement.

Q:How the arch of the tunnel concrete pouring up, how to support before pouring, using I-beam is directly support the earth?: Small pipe or large, medium pipe shed is the advanced support for the broken rock area or into, out of the hole, of course, grouting, grouting without losing the significance of the implementation.

Q:What is the simple calculation method of the tunnel excavation unit price: Fully integrated unit price = labor + material equipment + + + + + + + management fees

Q:Design of lining concrete is C30, what should be used in the construction of concrete arch cushion concrete?: Now the actual project is basically C15, if the economy is less than C15.

Q:How many meters can be poured in the first floor of the 2 level of the surrounding rock of the railway tunnel?: And these kinds of excavation methods need to determine the number of excavated meters according to the grade of surrounding rock. Tunnel invert and floor is completed after the initial support (that is, shotcrete, a layer of concrete, in the excavation of rock on some hard rock without vertical spray arch thin, weak surrounding rock shall be sprayed on the vertical arch thickness in this special project map will show) for pouring 2 reinforced concrete lining when left in general is 6~12 meters

Q:Tunnel steel arch behind the steel mesh after a layer of fine iron wire mesh what effect is there?: Function as follows:1, the construction of the shaft excavation of the power tunnel shaft structure is a permanent structure, the construction of the shaft using shotcrete + net structure steel frame + steel mesh support + waterproof film + cast-in-place reinforced concrete lining method.

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