JP2008014062A - Fireproof panel for tunnel, and fireproof structure of tunnel using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve impact resistance and explosion resistance while excellently preventing infiltration of spring water or the like into fireproof panels for a tunnel in a fireproof structure of the tunnel using the fireproof panels used as a fireproof internal finishing material or the like for a mountain tunnel or various other tunnels. <P>SOLUTION: The fireproof panels 1 for the tunnel laid on the inner surface of tunnel lining F, are formed by laminating and integrally sticking a reinforcing sheet material 11 with heat resistance and cut-off property on the back face side of fireproof panel bodies 10. The fireproof panels 1 are arranged circumferentially in the axial direction of the tunnel on the inner surface of the tunnel lining F, and the respective fireproof panels 1 are mounted and supported at predetermined spaces on the inner surface of tunnel lining through space holding members 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fireproof panel for a tunnel used as a fireproof interior material in a mountain tunnel, a shield tunnel, and other various tunnels, and a tunnel fireproof structure using the same.

  Conventionally, various techniques for making the above-described tunnel fire-proof structure have been proposed, and as one of them, a fire-resistant panel having a predetermined size and shape is laid in the tunnel axial direction and the circumferential direction on the inner surface of the tunnel lining. What is made is known (for example, refer to Patent Documents 1 and 2 below).

  The fireproof panel laid on the inner surface of the tunnel lining as described above has a fireproof performance, but it is used as a part of the tunnel structure, so various characteristics are required. First of all, water-stopping and durability against spring water penetrating from the ground are required. For example, a shield tunnel is constructed in advance by assembling a highly water-tight segment prepared in advance at a factory, etc., through waterproof packing, etc., so that there is little water penetration into the lining, Since lining is constructed by placing concrete for lining on site, water permeability is higher than that of shield tunnels, and it is important to treat water that has penetrated into the lining from the ground.

  In addition, fireproof panels used for road tunnels, for example, should have impact resistance and explosion resistance so that they will not be damaged by an impact due to an automobile accident or explode due to a temperature rise due to a fire. It is necessary to prevent the flame from entering through the gaps between the matching fireproof panels so that the lining is altered or deteriorated and the durability is not lowered.

  Therefore, in the following Patent Document 1, flame entrapment material (seam closure material) such as rock wool or ceramic blanket is installed on the back side (lining side) between adjacent fireproof panels, and the flame is placed on the back side between the panels. However, if the above-mentioned flame entrainment prevention material is interposed between the refractory panel and the lining, the spring water flowing into the lining is placed between the lining and the refractory panel. There is a risk of hindering the flow of water when flowing downward from the water.

  On the other hand, in the following Patent Document 2, a backup material is arranged on the back side of the seam of a fireproof panel (fireproof covering plate) laid on the inner surface of the tunnel lining, and the backup material and the fireproof panel and the inner surface of the lining are formed. By interposing a spacer at a predetermined interval between them, the spring water is allowed to flow downward from between the fireproof panel and the backup material and the inner surface of the lining, but fixing of the backup material becomes insufficient. There is a risk that a gap is often formed or peeled off between the backup material and the fireproof covering plate.

  Moreover, as a fireproof panel as described above, for example, calcium silicate, ceramics and other various materials are used, and as a property, a board shape or a mat shape is often used, but depending on the material and properties, When immersed in the spring water flowing on the back side of the fireproof panel for a long time, the panel swells or changes its quality and deteriorates its appearance, and fireproof performance and normal performance deteriorate.

  In addition, fireproof panels such as those described above, while ensuring the maximum fireproof performance, are often relatively vulnerable to impacts. There is a risk of explosion by heat. Therefore, in Patent Document 3 and Patent Document 4 below, it has been proposed to reinforce the fireproof material by mixing reinforcing fibers or fibrous materials, but sufficient impact resistance, explosion resistance, etc. are always obtained. There were problems such as being unable to do so.

JP 2005-42456 A JP 2005-155083 A JP 2001-122670 A Japanese Patent Laid-Open No. 2003-300769

  The present invention has been proposed in view of the above-described conventional problems, and can well prevent intrusion of spring water or the like into the fireproof panel laid on the inner surface of the tunnel lining, and has impact resistance, explosion resistance, and the like. An object of the present invention is to provide an excellent fireproof panel for tunnels and a tunnel fireproof structure using the same.

  In order to achieve the above object, a tunnel fireproof panel and a tunnel fireproof structure using the same according to the present invention have the following configurations. That is, the fireproof panel for tunnels according to the present invention is a fireproof panel for tunnels laid on the inner surface of the tunnel lining, and faces the inner surface of the lining when laid on the inner surface of the tunnel lining of the panel body having fire resistance. It is characterized in that a reinforcing sheet material having impact resistance and water-stopping property is laminated and fixed integrally on the back side which is the side.

  As the panel body, various materials can be used as long as they have other fire resistance such as calcium silicate and ceramic, and the panel body has a board shape, a mat shape, or other appropriate properties. . Furthermore, as the reinforcing sheet material having the above-mentioned impact resistance and water-stopping property, for example, a synthetic resin sheet such as polyethylene or EVA resin having a number of concave grooves on the side opposite to the panel body, or glass cloth is used. Can do. Further, these sheet materials may be laminated on the back side of the panel body and fixed integrally by welding or an adhesive material.

  Moreover, the tunnel fireproof structure according to the present invention comprises a fireproof panel formed by laminating a reinforcing sheet material having impact resistance and waterstop on the back side of the panel body having fire resistance, and integrally fixing the fireproof panel. Facing the inner surface of the tunnel lining and arranged side by side in the tunnel axial direction and circumferential direction, and each of the fireproof panels is mounted and supported on the inner surface of the tunnel lining with a predetermined interval via a spacing member. To do.

  In this case, the fireproof panels adjacent to each other in the circumferential direction of the tunnel are arranged to face each other, and the lower end portion of the reinforcing sheet material of the fireproof panel located on the upper side is the upper end portion of the reinforcing sheet material of the fireproof panel located on the lower side. It is preferable that a seam plugging material extending in the circumferential direction of the tunnel is interposed between the rear surface between the refractory panels adjacent to each other in the tunnel axis direction and the inner surface of the tunnel lining while being arranged overlapping the rear surface. In addition, on the surface of the reinforcing sheet material opposite to the surface to be fixed to the panel body, a plurality of concave grooves extending in the tunnel circumferential direction may be provided at predetermined intervals in the tunnel axial direction as necessary. Also good.

  The fireproof panel for a tunnel according to the present invention is obtained by laminating a reinforcing sheet material having impact resistance and waterstop on the back side of the panel body having fire resistance as described above, and integrally fixing the panel body. Intrusion of water into the interior can be satisfactorily prevented, and as a result, water leakage into the tunnel can be prevented, and the panel body is reinforced from the back side by the reinforcing sheet material, resulting in impact resistance and explosion resistance. Or the effect of preventing cracking can be improved. As a result, for example, it becomes possible to improve the impact resistance than the conventional fiber reinforced type fireproof panel, and even if the panel body is damaged or explode by an impact or heat due to an automobile accident or the like, It becomes possible to satisfactorily prevent the panel body from being scattered by the sheet material being restrained.

  If a synthetic resin sheet such as polyethylene or EVA resin having a large number of grooves on the side opposite to the panel main body is used as the reinforcing sheet material as described above, the sheet is melted by a hot air welding machine or the like. And can be easily welded to the back of the panel body. Moreover, it becomes possible to discharge | emit favorably by guide | inducing the guidance direction of the drainage of spring water below by said concave groove. Furthermore, when a glass cloth is used as the reinforcing sheet material, it is nonflammable and has a high fireproof temperature, so that the reinforcing effect of the panel body can be further improved.

  Further, the tunnel fireproof structure according to the present invention comprises a fireproof panel formed by laminating a reinforcing sheet material having impact resistance and waterstop on the back of the panel body having fire resistance as described above, and integrally fixing it. The rear side faces the tunnel lining inner surface and is arranged side by side in the tunnel axial direction and circumferential direction, and each fireproof panel is mounted and supported at a predetermined interval on the tunnel lining inner surface via a spacing member. Therefore, in the same manner as the invention of the fireproof panel, it is possible to prevent the intrusion of water into the panel body by the reinforcing sheet material having impact resistance and waterstop, and when the spring water penetrates into the lining, It can be smoothly discharged downward through the gap between the inner surface of the lining and the fireproof panel. Further, the reinforcing sheet material can improve the impact resistance, the explosion resistance, or the crack prevention effect as in the invention of the fireproof panel.

  In this case, as described above, the fireproof panels adjacent to each other in the tunnel circumferential direction are arranged to face each other, and the lower end portion of the reinforcing sheet material of the fireproof panel located on the upper side is reinforced with the fireproof panel located on the lower side. If the sheet material is disposed so as to overlap the back surface of the upper end portion, it is possible to further prevent water from entering the tunnel inside the panel body and the fireproof panel. In addition, if a seam closing material extending in the circumferential direction of the tunnel is interposed between the back surface between the refractory panels adjacent to each other in the tunnel axis direction and the inner surface of the tunnel lining, for example, between adjacent panels in the tunnel axis direction at a tunnel curved portion such as a curve In the case where a gap is formed in the fireproof panel, it is possible to prevent a flame at the time of a fire from entering the back side of the fireproof panel from the gap and to prevent intrusion of spring water.

  Moreover, since the seam blocking material is provided only in the tunnel circumferential direction between the fireproof panels adjacent to each other in the tunnel axial direction, the flow of water in the tunnel circumferential direction between the tunnel lining inner surface and the fireproof panel is allowed. Even in a tunnel with a lot of spring water, it can be drained well. Further, if a plurality of concave grooves extending in the circumferential direction of the tunnel as described above are provided on the surface of the reinforcing sheet material opposite to the panel body, the water flow in the circumferential direction of the tunnel is further smoothly and efficiently drained. It is possible to do.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a tunnel fireproof panel and a tunnel fireproof structure using the same according to the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is a perspective view showing an embodiment of a fireproof panel according to the present invention.

  As shown in FIG. 1, the fireproof panel 1 of the present embodiment is laminated integrally with a sheet material for reinforcement 11 having impact resistance and water-stopping properties on the back side of a panel body 10 having fire resistance. It is a fixed configuration.

  As the panel body 10, various materials can be used as long as they have other fire resistance such as calcium silicate and ceramic, but in the present embodiment, a board-like refractory material made of calcium silicate is used. It is used. The reinforcing sheet material 11 is made of any material as long as it has impact resistance and water-stopping properties and can reinforce the panel body by being laminated and fixed to the back surface of the panel body 10. In the embodiment, a synthetic resin sheet made of polyethylene or EVA resin is used.

  In the present embodiment, the fireproof panel 1 is formed into a substantially square shape, particularly a rectangular shape in the case of the figure, and is formed in a curved state in advance along the curved surface of the lining inner surface to be laid. However, it may be formed smoothly depending on the material of the fireproof panel, the curvature of the inner surface of the lining, and the like. Further, by forming a large number of striped convex ribs 11r at a predetermined interval on the back side of the reinforcing sheet material 11, that is, the surface opposite to the panel main body 10, a space between the adjacent convex ribs 11r and 11r is formed. The groove 11g is provided with a side 11b of the sheet material 11 on one end side in the longitudinal direction of the groove 11g.

  2 to 11 show an embodiment of a tunnel fireproof structure according to the present invention using the above fireproof panel 1, and this embodiment is a tunnel T formed by excavating a natural ground G as shown in FIG. A lining F made of concrete or the like is formed on the inner surface of the lining, and the refractory panel 1 is arranged on the inner surface of the lining F with the interval holding member 2 between the lining inner surface and the lining inner surface. Are mounted and supported at predetermined intervals.

  The convex ribs 11r and the concave groove strips 11g of the reinforcing sheet material 11 are arranged in a state where the longitudinal direction thereof is oriented in the tunnel circumferential direction, and the side 11b of the sheet material 11 formed longer than the panel body 10 has a lower side. It is arranged to be. Further, the fireproof panels 1 and 1 adjacent to each other in the circumferential direction of the tunnel are arranged in a state of abutting each other so as to be stacked in order from the lower part on both sides of the tunnel, and from the panel body 10 of the reinforcing sheet material 11 of the fireproof panel 1 located on the upper side Also, a side 11b protruding downward (hereinafter referred to as a lower side protruding) 11b is disposed so as to overlap the back surface of the upper end portion 11a of the sheet material 11 of the fireproof panel 1 positioned on the lower side as shown in FIG. Yes.

  Further, a seam closing member 3 extending in the circumferential direction of the tunnel is interposed between the back surface between the fireproof panels 1 and 1 adjacent to each other in the tunnel axis direction and the inner surface of the tunnel lining as shown in FIG. The material of the seam closing material 3 may be a fireproof or nonflammable material, and may be fixed to the inner surface of the lining F, the back surface of the fireproof panel 1 or both surfaces with an adhesive or the like. In the present embodiment, the same material as that of the fireproof panel 1 is used as the seam closing material 3 and is fixed to the inner surface of the lining F with an adhesive 3a. The seam closing material 3 and the fireproof panels 1 and 1 adjacent to the seam closing material 3 are arranged in a staggered manner so that the positions of the seams in the circumferential direction do not coincide with each other.

  In the present embodiment, the interval holding member 2 for mounting and supporting each of the fireproof panels 1 on the inner surface of the lining F is a U-shaped cross section having a mounting hole 20 on the inner surface of the tunnel lining as shown in FIGS. An insertion piece 2b that protrudes upward is provided at the upper end of the attachment base 2a, and a pair of insertion pieces 2c and 2c that protrude downward are provided at the lower end of the attachment base 2a. The presser piece 2d that protrudes from the bottom is provided. The both insertion pieces 2c and 2c and the holding piece 2d are provided with a slight shift in their thickness direction, and a locking metal fitting 4 to be described later is provided between the both insertion pieces 2c and 2c and the holding piece 2d. It is the structure fixed on both sides.

  The spacing metal fitting 2 is configured to be attached to the inner surface of the lining F by inserting a bolt 21 or the like into an attachment hole 20 provided in the attachment base portion 2a and screwing it into an anchor 5 or the like placed on the inner surface of the tunnel lining. In addition, by making the mounting hole 20 a long hole in the vertical direction, the mounting position of the spacing metal fitting 2 with respect to the lining F can be adjusted within the length range. On the other hand, on both the upper and lower sides of the back side (lining side) of the fireproof panel 1, there are provided locking metal fittings 4 for inserting and engaging the insertion pieces 2b and 2c. In the form, three are provided on each of the upper and lower sides on the back side of each fireproof panel 1, and the anchor 5 and the interval holding metal fitting 2 are provided on the inner surface of the lining correspondingly.

  In the present embodiment, as shown in FIGS. 5 and 7, each of the locking metal fittings 4 is formed in a generally strip-like shape in which both end portions in the longitudinal direction are bent in steps in the thickness direction, and both end portions thereof are formed. The structure is such that the bolt is attached to an insert nut 6 or the like embedded in advance in the fireproof panel 1. As shown in FIGS. 4 and 8, a slit-like gap is formed between the longitudinal intermediate portion of each locking metal fitting 4 and the reinforcing sheet material 11 of the fireproof panel 1, and the gap is formed in the gap. The fireproof panel 1 is engaged with and held by the interval holding metal 2 via the locking metal 4 by inserting the insertion pieces 2 b and 2 c of the holding metal 2. Further, at that time, the lower fitting pieces 2c and 2c and the holding piece 2d provided therebetween are configured so that the upper locking metal fitting 4 of each panel 1 is sandwiched and fixed from both sides in the thickness direction. ing.

  As described above, the fireproof panel 1 according to the present invention is formed by laminating the reinforcing sheet material 11 having impact resistance and waterstop on the back side of the panel body 10 having fire resistance, and integrally fixing the panel. Intrusion of water into the main body 10 can be satisfactorily prevented, and the panel main body 10 is reinforced from the back side by the reinforcing sheet material 11 to improve impact resistance, explosion resistance, or crack prevention effect. Can do. As a result, for example, it becomes possible to improve the impact resistance than the conventional fiber reinforced type fireproof panel, and even if the panel body is damaged or explode by an impact or heat due to an automobile accident or the like, The panel main body 10 is restrained while the sheet material 11 is stretched, and the panel main body 10 can be well prevented from scattering or collapsing.

  Further, when a synthetic resin sheet such as polyethylene or EVA resin is used as the reinforcing sheet material 11, the sheet can be easily welded to the back surface of the panel body 10 by being melted by a hot air welding machine or the like. In particular, EVA resin is excellent in flexibility and weldability, and it has been proved that no toxic gas is generated even if it burns. Further, when a large number of grooves 11g are provided on the back side of the reinforcing sheet material 11, the water collecting holes in which spring water is arranged in a predetermined direction, for example, below the tunnel side wall as shown in FIG. It becomes possible to guide and guide in the direction of the perforated tube 15, and when a large number of convex ribs 11r for forming the concave groove strips 11g are provided on the back side of the reinforcing sheet material 11, the reinforcing sheet material 11 and the fire resistance The strength of the entire panel is increased, and the impact resistance and explosion resistance of the fireproof panel 10 can be further improved.

  Further, the tunnel fireproof structure according to the present invention is a fireproof panel 1 in which the reinforcing sheet material 11 having impact resistance and water-stopping properties is laminated and fixed integrally on the back surface of the panel body 10 having fire resistance as described above. Are arranged side by side in the tunnel axial direction and the circumferential direction on the inner surface of the tunnel lining F, and the respective fireproof panels 1 are mounted and supported on the inner surface of the tunnel lining at a predetermined interval via the interval holding member 2. Therefore, in the same manner as described above, the reinforcing sheet material 11 having impact resistance and water-stopping property can prevent water from entering the panel body 10, and when spring water has permeated into the lining F, It can be smoothly discharged downward through the gap between the inner surface of the lining and the fireproof panel 1. Further, the reinforcing sheet material 11 can improve the impact resistance, explosion resistance, or crack prevention effect of the fireproof panel.

  In this case, the refractory panels 1 and 1 adjacent to each other in the tunnel circumferential direction are arranged to face each other as in the above embodiment, and the lower protruding side 11b of the reinforcing sheet material 11 of the refractory panel 1 located on the upper side thereof is If it is arranged so as to overlap the back surface of the upper end portion of the reinforcing sheet material 11 of the fireproof panel 1 located on the side, it is possible to better prevent water from entering the panel body 10 and the tunnel inside the fireproof panel 1. In addition, for example, when the tunnel is curved in the axial direction, a gap is likely to be generated between adjacent panels in the tunnel axial direction outside the curved portion. When a seam closing material 3 extending in the circumferential direction of the tunnel is interposed between the rear panel of the fireproof panels 1 and 1 adjacent to each other in the axial direction and the inner surface of the tunnel lining, a fire is generated in the fireproof panel 1 from the gap. It is possible to satisfactorily prevent a flame from entering and a spring water from entering the tunnel.

  Moreover, since the seam closing member 3 is provided only in the circumferential direction of the tunnel between the fireproof panels 1 and 1 adjacent to each other in the tunnel axial direction, the water in the tunnel circumferential direction between the tunnel lining inner surface and the fireproof panel 1 is provided. Therefore, even in a tunnel having a lot of spring water such as a mountain tunnel, it can be drained well. Further, when a number of grooves 11g are provided on the surface of the reinforcing sheet material 11 opposite to the panel body 10, as described above, the water flow in the circumferential direction of the tunnel is more smoothly and efficiently drained. It is something that can be done.

  It should be noted that the processing in the vicinity of the top end after the laying of the fireproof panels 1 from the lower part on both sides of the tunnel upward in order as described above is appropriate, but an example thereof is shown in FIGS. 10 shows. In FIG. 9, an auxiliary panel 1 ′ constructed almost in the same manner as the refractory panels is attached between the uppermost refractory panels 1, 1 stacked from the left and right sides with a pair of anchors 50, bolts 51, and nuts 52. Further, both sides 11b and 11b of the reinforcing sheet material 11 provided in the auxiliary panel 1 ′ are protruded longer than the panel body 10 of the auxiliary panel 1 ′, and the protruding sides 11b and 11b are formed at the uppermost position. It is the structure arrange | positioned so that it might overlap with the edge part of each reinforcement sheet | seat material 11 of the fireproof panel 1 * 1. In the figure, 9 is a spacing member interposed between the auxiliary panel 1 'and the inner surface of the tunnel lining F.

  FIG. 10 shows an auxiliary panel 1 ′ between the uppermost fireproof panels 1, 1 stacked from the left and right sides of the tunnel, and a spacing member 2 in which the uppermost fireproof panels 1, 1 are engaged and held. Mounted with bolts 13 and nuts 14, the sheet member 12 having impact resistance and water-stopping properties is tunneled so as to cover the interval holding member 2 and the end of the uppermost fireproof panel 1, 1 adjacent thereto. In this configuration, the anchor 53 and bolts 54 are attached to the inner surface of the lining F. The sheet material 12 is made of the same material as the reinforcing sheet material 11 of each fireproof panel 1 in this example. Both end portions 12a and 12a in the tunnel circumferential direction of the sheet material 12 are simply placed on the reinforcing sheet material 11 of the uppermost fireproof panel 1 or 1, or may be fixed by welding or the like as necessary. Good. In this example, the auxiliary panel 1 ′ is made of only the refractory material of the same material as that of the panel main body 10 of the refractory panel 1, but the reinforcing sheet material 11 similar to the refractory panel 1 is provided on the upper surface thereof. What has can also be used. 9 and 10, the reinforcing sheet material 11 and the sheet material 12 of each fireproof panel 1 are provided with the same convex ribs 11r and concave groove strips 11g as described above, but they are omitted in the drawings.

  On the other hand, the lower end portion of the reinforcing sheet material 11 of the fireproof panel 1 at the lowest position is protruded greatly below the panel body 10 as shown in FIG. 11, for example, and a perforated tube having a large number of through holes on the peripheral wall surface. 15 and the like, the water flowing down along the groove 11g on the back side of the reinforcing sheet material 11 is collected in the perforated pipe 15, and then the drainage groove ( The water can be drained to the outside of the tunnel through the perforated pipe 15 or the like. In the case of the figure, the fireproof panel 1 at the lowest position is placed on the invert concrete 16 placed at the bottom of the tunnel via a support member 17 and the like, and the downward insertion piece 2c and the holding piece 2d are omitted. The interval holding metal fitting 2 'is supported, but the same interval holding metal fitting 2 can be used instead of the interval holding metal fitting 2'. In the figure, 18 is a pressing member for fixing the lower part of the reinforcing sheet material 11.

  In the above embodiment, as shown in FIGS. 5 (a) and 5 (b), the seam closing material 3 is not provided on the back side of the panel body 10 at a position where the seam closing material 3 is interposed. However, the reinforcing sheet material 11 may be provided on the entire back surface of the panel body 10 as shown in FIG. 12A, for example. In this case, the protruding rib 11r is provided at the contact position of the reinforcing sheet material 11 with the seam closing member 3 in the figure, but the protruding rib 11r may be omitted in some cases.

  Further, as shown in FIG. 12B, the side 11c of the reinforcing sheet material 11 of the fireproof panel 1 of any one of the fireproof panels 1 and 1 adjacent in the tunnel axis direction is protruded from the panel body 10, You may make it arrange | position on the back of the side edge part 11d of the sheet material 11 for reinforcement of the other fireproof panel 1 so that it may overlap. Also in this case, the contact position with the seam closing member 3 and the convex rib 11r at the overlapping portion between the side 11c and the side end 11d may be omitted or provided as shown in the figure. If one side 11c protrudes and overlaps with the other end 11d as described above, it is possible to more reliably prevent water from entering between the refractory panels 1 and 1 adjacent in the tunnel axis direction. Furthermore, if the one end portion 11c is brought into pressure contact with the other end portion 11d by the elastic force or the like of the seam closing member 3, it is possible to more reliably prevent the water from entering.

  Further, in the above embodiment, as the reinforcing sheet material 11, a synthetic resin sheet such as polyethylene or EVA resin having a large number of convex ribs 11r and concave groove strips 11g on the back side, that is, the surface opposite to the panel body 10 is used. However, the convex rib 11r and the groove 11g are not necessarily provided, and a synthetic resin sheet other than the above materials can be used. In addition to the synthetic resin sheet, various materials can be used as the reinforcing sheet material 11 as long as they have impact resistance and water-stopping properties and can reinforce the panel body 10.

  FIG. 13 shows an example of this, in which a mesh-like glass cloth as the reinforcing sheet material 11 is laminated on the back side of the panel body 10 and integrally fixed. In particular, in the case of the figure, a glass cloth (glass fiber cloth) knitted in an inclined lattice shape having a thickness of about 0.17 mm as the reinforcing sheet material 11 is laminated on the back side of the panel body 10 to form an epoxy resin or the like. The structure is integrally fixed with an adhesive.

  When the glass cloth as described above is used as the reinforcing sheet material 11, it is nonflammable and has a high fireproof temperature and a high reinforcing effect. For example, as compared with a so-called fiber fireproof panel in which fibers equivalent to the above are mixed in the fireproof panel material. It has been confirmed by various tests that the effect of suppressing cracking when a local impact is applied is high. In addition, on the back side of the reinforcing sheet material 11 using the glass cloth as described above, a convex rib 11r or a concave groove 11g similar to the above may be provided as necessary. The same effect as described above can be obtained.

  As described above, according to the fireproof panel for a tunnel according to the present invention and the tunnel fireproof structure using the same, the penetration of water into the panel body and the tunnel is excellent by the reinforcing sheet material fixedly laminated on the back side of the panel body. In addition, the panel body is reinforced from the back side by the reinforcing sheet material, and the impact resistance, explosion resistance, or crack prevention effect can be improved. As a result, for example, it is possible to improve the impact resistance compared to the conventional fiber reinforced type fireproof panel, and in the event that the panel body is damaged or explode due to shock or heat due to an automobile accident or the like, the sheet It can prevent the material from constraining the panel body and scatter, and is particularly effective for mountain tunnels and road tunnels where fireproof structures that require good water-stopping and fireproof performance and are easy to construct are required. be able to.

The perspective view which shows one Embodiment of the fireproof panel by this invention. The perspective view which shows one Embodiment of the tunnel fireproof structure using the said fireproof panel. (A) is a partial cross-sectional front view thereof, (b) is an inner surface view thereof, and (c) is a cross-sectional view taken along line cc in (b). (A) is the enlarged view of the A section in Fig.3 (a), (b) is further the one part enlarged view. (A) is the enlarged view of the B section in FIG.3 (c), (b) is further the one part enlarged view. The rear view seen from CC in Fig.5 (a). The disassembled perspective view of the panel attachment part seen from the inner surface side of the fireproof panel. The disassembled perspective view of the panel attachment part seen from the back side of the fireproof panel. (A) is a cross-sectional view of the fireproof panel mounting part at the upper part of the tunnel, and (b) is an enlarged view of part b in (a). The cross-sectional view which shows the example of a change of the fireproof panel attachment part of a tunnel upper part. The cross-sectional view of the lowest fireproof panel mounting part. The cross-sectional top view which shows the example of a change of the fireproof panel contact part adjacent to a tunnel axial direction. The perspective view which shows other embodiment of the fireproof panel by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fireproof panel 10 Panel main body 11 Reinforcing sheet material 11a Upper end part 11b Lower side protruding side 11c Side side 11d Side end part 11g Groove groove 11r Convex rib 2 Spacing holding member 2a Mounting base 2b, 2c Insertion piece 2d Holding piece 3 Seam closing material 4 Locking bracket 5 Anchor 6 Insert nut 7 Bolt 20 Mounting hole 21 Bolt T Tunnel G Ground mountain F Covering

Claims (6)

  A fireproof panel for tunnels laid on the inner surface of a tunnel lining, and a panel body having fire resistance, on the back side, which is the side facing the inner surface of the lining when laid on the inner surface of the tunnel lining, has impact resistance and A fireproof panel for a tunnel, characterized in that a reinforcing sheet material having water-stopping properties is laminated and fixed integrally.   As the reinforcing sheet material, a synthetic resin sheet having a number of concave grooves on the surface opposite to the surface to be fixed to the panel main body is integrally fixed to the back surface of the panel main body by welding or an adhesive. The fireproof panel for tunnels according to claim 1.   The fireproof panel for a tunnel according to claim 1, wherein a glass cloth is integrally fixed to the back surface of the panel body by welding or an adhesive as the reinforcing sheet material.   A fireproof panel made by laminating a reinforcing sheet material with impact resistance and water-stopping properties on the back side of the panel body having fire resistance, and integrally fixing it, with the back side facing the tunnel lining inner surface A tunnel refractory structure, wherein the refractory panels are arranged side by side in a tunnel axial direction and a circumferential direction, and each of the refractory panels is attached to and supported on the inner surface of the tunnel lining by a spacing member.   The fireproof panels adjacent to each other in the tunnel circumferential direction are placed in contact with each other, and the lower end of the reinforcing sheet material of the fireproof panel located on the upper side is overlapped with the back of the upper end of the reinforcing sheet material of the fireproof panel located on the lower side. 5. The tunnel refractory structure according to claim 4, wherein a seam blocking material extending in a circumferential direction of the tunnel is interposed between a rear surface between adjacent refractory panels in the tunnel axial direction and a tunnel lining inner surface.   6. A plurality of concave grooves extending in the tunnel circumferential direction are provided on the surface of the reinforcing sheet material opposite to the surface fixed to the panel body at predetermined intervals in the tunnel axial direction. Tunnel fireproof structure.

Images