Steel Tunnel Formwork 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:

◆ High stiffness, make perfect shape for concrete.

◆ Easy operation, save labor and force.

◆ Fast forming, repeatedly turnover.

Steel Tunnel Formwork for Building Construction

Q: I would like to ask the tunnel step method excavation, the height of each step is how to divide?: Tunnel excavation adopts mechanical construction, tunnel excavation using simple self assembling drilling trolley, millisecond detonator, in order to improve the effect of smooth blasting around the eyes, around the eye using special Nonel detonation. Tunnel outlet using muck loader, dump truck with transport ballast. Two tunnel lining concrete use of the length of integral pouring formwork trolley 12M, concrete mixing station in centralized mixing, concrete transport vehicle transport pump into the mold.

Q: The tunnel lining is wood, how should support?: 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: Would you please tell me the difference between the concrete and shotcrete in the tunnel?: Characteristics of shotcrete:(1) the sprayed concrete has the characteristics of rapid growth, strong bonding force, high density and good impermeability. It can better fill the gap between the rock blocks, increase the integrity of the surrounding rock, prevent the free surface weathering and loosening, and work together with the surrounding rock.(2) the construction of shotcrete will transfer, pouring and tamping a few processes into one, and do not need a template, so the construction of fast, simple.(3) sprayed concrete can play an important role as early as possible.(4) compared with the concrete, the physical and mechanical properties of sprayed concrete are improved.

Q: The arch and the arch of the tunnel: Tunnel invert refers to the bottom of the tunnel (anti arch, so called inverted arch)

Q: What is the role of the tunnel formwork trolley? What is the use of template trolley?: The use of full circle wear line; side and roof arch lining are most commonly used, two concrete lining construction commonly used in highway, railway tunnel and underground cavern.

Q: In the process of tunnel construction, two kinds of formwork system should be adopted in the construction of the two lining concrete. Q: what is the template trolley?: Generally, a plurality of arc and straight steel die!Normal lining trolley

Q: What is the first project of tunnel constructionNow to do some of the tunnel program, you need to be the first to list out, a total of what? I know that the first branch, two lining, inverted arch, tunnel, pavement these: The YK24 + 300 ~ YK24 + is located in the silty clay, the whole weathered rock, the strong weathered rock distribution area, the soil is soft, the rock is broken, the pore is big, the stability is bad easy to collapse. Groundwater is mainly pore water and rock fissure water, rain water is large, easy deformation collapse

Q: When the tunnel fight, there is no provision to fight how many meters left, only by one of the construction: Fixed strip: the use of additional reinforcement fixation; special fixture fixed; the wire and the fixed template (Figure 2).

Q: I would like to ask the high-speed rail tunnel invert small side wall and arch with the small side of the wall of the hanging formwork of what a good method?: Die casting. Install the inverted L hanger on the side wall.

Q: 12 meters of the tunnel car, under normal circumstances, one of the two months to be able to cast a few models?: Seven hours after the maintenance of formwork, pouring a every day is no problem, that is to say a month to about fifteen die casting.

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