FI111184B - Device for fastening tunnel cladding - Google Patents

Description

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Device for fixing tunnel cladding

The invention relates to a device for fastening and sealing cladding in tunnel arches 5, which is presented in the preamble of claim 1.

BACKGROUND 10 It is known to use profiled metal plates fixed to the tunnel wall to lining the tunnels and lining them with insulating material, or to install foam panels with a spray-concrete overlay for fire protection. This is a costly measure and has not produced satisfactory sealing in the tunnel-15 cladding seams.

Foam-based board materials have recently been developed for placement in tunnels as self-supporting bark liners.

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Norwegian Patent Publication No. 171286 discloses a solution where v .. ': the riser straps 20 on both sides of the bolt used to fasten the cladding are located at the same cladding element as shown in Figures 2 and 3. In addition, a rock-facing plate 19 is provided for supporting cladding elements only. from behind, as shown in line 14 of page 8 of the publication. Rims; '·; 20 are not supported in this section.

Purpose 30

The main object of the invention is to provide a device for securing and sealing tunnel cladding, thereby allowing overlapping in foam board seams and possibly using fire protection web material. It is a particular advantage to provide a device which provides a secure seal between the foam sheets in both vertical and horizontal seams, even when the edges of the sheets leave an opening of 5 to 10 cm.

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It is a particular purpose to provide a fastening device which makes it possible to fasten such a tunnel cladding in a simple manner with the minimum of work.

The invention Such a device can be formed as claimed in claim 1. With this design, it is possible to install the foam sheets inside the tunnels simply, while at the same time achieving tight molds that remain tight even under temperature fluctuations, atmospheric pressure and heating. The foam sheets can be protected with cladding material or sprayed concrete.

Other aspects of the invention are set forth in the dependent claims.

Example

The invention will be further described with reference to the drawings, in which Figure 1 shows a perspective section of a section of a tunnel,)) '; Figure 2 is a sectional view of a vertical joint at the mounting bolt, and Figure 3 shows a part of the joint seen from the outside.

Figure 1 shows a tunnel orifice in which the lining 11 is made of foam sheets, for example PE foam sheets 11A, having an inward fixed topsheet 11B (Figure 2) which makes the lining 11 30 more resistant to fire and mechanical and climatic stress and repels impurities. The topsheet 11B may be a composite, for example fiberglass reinforced plastic, which, by virtue of the addition of fiberglass, can be made more fire resistant.

The cladding 11 is secured to a base consisting of a row of elongated fastening members, hereinafter referred to as risers 12, which are arcuate below the tunnel vault and secured to it by rock bolts 13 which are anchored in the rock. The climbing rims 12 consist, for example, of two circular steel bars 12A and 12B connected in a row of strip steel cross-sections 12C.

Figure 2 shows a protruding rock bolt 13 of brushed steel and 5 having a threaded free end 13A. The threaded rock bolt end 13A has a screw 14 fastened to the riser 12. The bracket 14, shown in more detail in Figure 3, has a transverse socket 14A having recesses 14B, 14C at each end for accommodating two rods 12A and 12B of the riser 12. The fastener 14 is made 10 by folding the sheet material. The recesses 14B, 14C are C-shaped in the example, so that the rods 12A and 12B can be pressed into a firm attachment by hitting a hammer or the like. If this mounting head is inappropriate due to e.g. large dimensional fluctuations, the fasteners may be slidable on the rods 12A and 12B with their ends bent around them.

The tunnels often have bends, and the cladding panels then have a different width on the inner arches than on the outer arches. Inner arches have cladding panels facing the rock bolts at their edges, while outer arches can have a gap of up to 20,100 mm between the boards. To prevent leaks in the seams as the width of the gaps 17 varies, a sealing tape 19 is mounted along the entire seam or made of plastic material. they are tightened by nut 22. The sealing strip is pressed by the riser 12 into the longitudinal grooves 23 on the outer surface of the cladding plates 11 due to the pressure produced by the clamping described below. Longitudinal grooves 23 in cladding panels 11; are so wide as to accommodate any changes in the width of the gap 17 due to the bends in the tunnel. On the inside of the cladding panels 11, a cover panel 24 is inserted between the rock bolts, which covers the gaps between the cladding panels 11Vi and provides fire protection of the seam. The cover plates 24 are pressurized against the cladding plates by means of an inner riser 26 having;, a flat steel press 28 and a nut 27.

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For the horizontal seams of the cladding panels, a longitudinal sealing strip or film, a sealing strip in the seam or a matched groove joint may be used.

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The tunnel liner and its attachment can be varied in various ways with respect to the example. The outer riser strap 12 may be replaced by a profile material, for example, torn aluminum. The inner riser rim 26 may be fully or partially integrated into the plate strip 24.

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Claims (7)

A device for securing and sealing a cladding within tunnels, wherein the sheet material (11) is secured to the rock bolts (13) anchored into the drill holes in the tunnel vault, the sheet material being against the rock support member (12A, 12B) secured to a row of rock bolts anchored to drill holes in the tunnel vault, and wherein the plate material is supported in each transverse seam (17) by an internal support member comprising two parallel 10 rods (26) held in place by a transverse (14A) at each rock bolt (13). characterized in that the outer street-side support member has a bar-like press member (12A, 12B) on each side of the seam (17) and is held in place by a transverse member (14A) of each of the 15 rock bolts (13); a strip-shaped sealing film (19) extending between the outer pressing member (12A, 12B) along the seams. Device according to Claim 1, characterized in that the outer stop member (12) consists of two rod steels, special; and circular steel (12A, 12B), which remain parallel by means of ladder-like cross-sections (12C) welded thereto. Device according to Claim 2, characterized in that the outer stop member (12) is secured to the rock bolts (13) by means of a plurality of separate cross-sections (14) provided with grooves (14B, 14C) for rod steels or circular steels (12A). 12B), or which are attached. , slidable on the response member. v30 Device according to Claim 3, characterized in that the transversal small (14) is formed as a U-profile having C-shaped openings (14B, 14C) in the side walls at each end. •))) Device according to Claim 3, characterized in that the cross-sections are pressed at their ends around the rod steels (12A, 12B). 111184 6 Apparatus according to claims 1 to 5, characterized in that the mesh plates (11) are provided with grooves (23) extending along the side edges to accommodate the stop elements (12A, 12B). Device according to Claim 6, characterized in that the groove (23) has a substantially larger width than the stop elements (12A, 12B). ) i. 111184 7