JP5185163B2 - Tunnel interior panel and interior panel mounting method on tunnel lining - Google Patents

Description

  The present invention relates to a tunnel interior panel such as a refractory plate laid on the inner surface of a tunnel lining that is already established or being constructed, and a method for attaching the interior panel to the inner surface of the tunnel lining using the same.

  Conventionally, various methods for attaching an interior panel such as a fireproof plate to the inner surface of a tunnel lining that has been established or is being constructed have been proposed. In this case, if the interior panel as described above is attached directly to the inner surface of the tunnel lining, the interior panel will crack or peel off when the lining moves due to an earthquake, traffic vibration, etc. The protruding spring water flows out between adjacent interior panels to the surface side and is contaminated, which may impair the function and appearance of the interior panel.

  Therefore, a so-called floating method has been proposed in which an interior panel is laid on the inner surface of the tunnel lining at a predetermined interval therebetween. For example, in Patent Document 1 below, it has been proposed to attach an interior panel such as a fireproof plate to the tunnel lining inner surface via a non-land adjustment spacer and a backup material. Is not always sufficient, and there are a large number of parts and assembly steps for mounting the interior panel, and there are problems such as complicated and troublesome carrying and construction, and increased construction time and cost.

  On the other hand, the applicant of the present invention has proposed to use a distance holding metal fitting and a locking metal fitting as described in Patent Document 2 as one of the above-described methods of floating tension. FIG. 13 shows an example of this. As shown in FIG. 13 (a), a band is preliminarily placed in the vicinity of the upper and lower sides on the back side of each panel body 10 in the interior panel 1 such as a fireproof plate laid side by side in the vertical direction. A plate-shaped locking metal fitting 2 is attached, and the lower side of the lower interior panel 1 is held by a not-shown interval holding metal fitting or appropriate means as shown in FIG. An insert in which a downward hanging piece (insertion piece) 3c is inserted into a locking metal fitting 2 provided on the upper side of the panel body 10 so that the interval holding metal 3 is embedded in the inner surface 4a of the tunnel lining 4 A nut 52 and a mounting bolt 51 screwed on the nut are fixed to the inner surface 4a of the lining, and an upward standing piece (insertion piece) 3b of the interval holding fitting 3 is attached to the lower side of the upper interior panel 1 A structure for engaging and holding the fastener 2 It is.

  In the case where the interior panel 1 is attached to the tunnel lining inner surface 4a as described above via the spacing metal fitting 3 and the locking metal fitting 2, the contact area between these members can be reduced. It is difficult to transmit to the interior panel 1, and it is possible to reduce as much as possible that the spring water that has oozed out from the inner surface of the tunnel lining flows out to the surface of the interior panel. However, as described above, locking metal fittings 2 are attached in advance in the vicinity of the upper and lower sides of the panel body 10 of the interior panel 1, and the interval holding metal fitting 3 is provided separately from the two locking metal fittings 2 and 2. Therefore, the number of parts and the number of assembly steps are large, and carrying and construction are complicated and troublesome. For example, the above-mentioned spacing metal fittings have conventionally been required to be brought into the construction site by an operator or the like separately from the panel body 10, and are inconvenient to handle and often forgotten or lost. is there. In addition, at the construction site, the work of bolting by inserting the interval holding metal fittings one by one into the locking metal fitting is troublesome and troublesome, and there are problems such as increased construction time and construction cost.

Japanese Patent No. 2005-155083 Japanese Patent No. 2005-42456

  The present invention has been proposed in view of the above-mentioned problems, has a small number of parts, is easy to carry and work on the construction site, is easy to handle, has little risk of being forgotten or lost, and has a simple structure. It is an object of the present invention to provide a tunnel interior panel that can be easily and inexpensively and quickly constructed and a method for attaching the interior panel to the inner surface of the tunnel lining.

  In order to achieve the above object, an interior panel for tunnel according to the present invention has the following configuration. That is, an interior panel for a tunnel that is laid in the vertical direction with a predetermined interval between the inner surface of the tunnel lining and the inner surface of the lining through an interval holding bracket, and the rear surface of the panel body of the interior panel A locking bracket is integrally provided on the lower side of the panel, and an interval holding bracket having an upward standing piece that engages with the locking bracket is integrally provided on the upper side of the back side of the panel body. It is characterized by.

  As a means for attaching the interval holding metal fitting and the locking metal fitting to the panel main body, for example, they are attached by an insert nut embedded in the panel main body and a bolt screwed to the insert nut. Or it is other suitable, such as attaching with the bolt which penetrates the above-mentioned panel body, and the nut screwed together.

  Further, the interior panel mounting method on the inner surface of the tunnel lining according to the present invention is constructed such that the tunnel interior panel configured as described above is constructed so as to be stacked in order from the bottom on the inner surface of the tunnel lining, and located on the lower side. The interval holding bracket provided on the upper side of the panel body of the interior panel is fixed to the inner surface of the tunnel lining, and the upward standing piece provided on the upper portion of the interval holding bracket is provided on the lower side of the panel body of the upper interior panel. The engaging metal fittings are engaged and held together.

  As described above, the interior panel for a tunnel according to the present invention is provided with a locking bracket integrally on the lower side of the back surface of the panel body of the interior panel, and an upward standing piece that engages with the locking bracket on the top. Since the interval holding bracket is integrally provided on the upper side of the back side of the panel body, the conventional interior panel is provided with the interval holding bracket separately from the panel body, and the upward standing piece provided on the interval holding bracket. However, in the present invention, it is necessary to provide only the lower side, and usually the locking metal fittings to be engaged with the downward hanging pieces need to be provided on the upper side and the lower side of the panel body. In general, a plurality of locking fittings are provided on each side, and the number of locking fittings for one interior panel can be greatly reduced.

  In addition, since the interval holding metal fittings are integrally provided on the upper side of the panel body, all the metal fittings for mounting the interior panel including the locking metal fittings can be integrally provided on the panel main body. In combination with the reduction in the number of parts, the assembly man-hour can be greatly reduced. In addition, since the above-mentioned locking metal fittings and interval holding metal fittings can be attached to the panel main body in advance at the factory or the like, the work at the site can be reduced. In addition, it is possible to prevent forgetting to carry or losing it in advance without putting it in a box and taking it to the construction site.

  Further, the interior panel mounting method on the inner surface of the tunnel lining according to the present invention is constructed such that the tunnel interior panel configured as described above is constructed so as to be stacked in order from the bottom on the inner surface of the tunnel lining, and is located on the lower side. The interval holding bracket provided on the upper side of the panel body of the interior panel is fixed to the inner surface of the tunnel lining, and the upward standing piece provided on the upper portion of the interval holding bracket is provided on the lower side of the panel body of the upper interior panel. By engaging and holding the locking metal fittings, the interior panel can be laid easily, inexpensively and quickly on the inner surface of the tunnel lining with a very simple configuration. As a result, construction time and construction cost can be greatly reduced.

  Hereinafter, a tunnel interior panel according to the present invention and a method for attaching an interior panel to the inner surface of a tunnel lining using the same will be described in detail based on embodiments shown in the drawings.

  FIG. 1 shows an embodiment of a tunnel interior panel according to the present invention, in which (a) is a rear view thereof, (b) is a plan view, (c) is a bottom view, (d) is a side view, FIG. 2 is a partially enlarged sectional view taken along line ee in FIG. 2A, FIG. 2 is a perspective view of the interior panel, and FIG. 3 is a partially enlarged perspective view of the interior panel arranged vertically. Hereinafter, members having the same configuration or the same function as those of the conventional example will be described with the same reference numerals.

  The interior panel 1 of the present embodiment is a panel body 10 formed of a refractory material such as calcium silicate or a ceramic plate material so as to be laid as a refractory plate on the inner surface of a tunnel lining made of a concrete segment to be described later. 1 and FIG. 2A, the panel body 10 is formed in a substantially rectangular shape that is horizontally long when viewed from the back and the front side, and the locking metal fitting 2 is integrated with the lower side of the back side of the panel body 10. And the interval holding metal fitting 3 is integrally attached to the upper side.

  In the present embodiment, as shown in FIGS. 1 and 2 (a), the locking metal fitting 2 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. The bolt 21 is inserted into a mounting hole (not shown) provided in the section, and the bolt 21 is screwed into an insert nut 22 embedded in the panel body 10 to be attached to the upper side of the panel body 10 on the back side. In the present embodiment, a plurality (three in the case of the figure) of the locking metal fittings 2 are provided along the lower side of the back side of the panel body 10.

  On the other hand, the spacing metal fitting 3 is for mounting and supporting the interior panel 1 on the tunnel lining inner surface 4a with a predetermined spacing therebetween, as shown in FIG. 1 (e) and FIG. And a base 3a having a U-shaped cross section having a through-hole 3h for mounting on the inner surface of the tunnel lining, which will be described later, and a panel body 10 that projects downward from the lower end of the U-shaped base 3a. The hanging piece 3c and the upright piece 3b protruding upward from the upper end of the U-shaped base 3a are integrally provided. The spacing metal fitting 3 is inserted into a mounting hole (not shown) formed in the hanging piece 3c, and the bolt 31 is screwed into an insert nut 32 embedded in the panel body 10. In this embodiment, a plurality (three in the figure) of interval holding fittings 3 corresponding to the plurality of locking fittings 2 are provided on the panel body 10. It is provided along the lower side of the back side.

  The spacing metal fitting 3 is configured to be attached to the tunnel lining inner surface by inserting a mounting bolt 51 through a through hole 3h provided in the base portion 3a and screwing into an insert nut 52 embedded in the tunnel lining inner surface 4a. The through hole 3h is formed in a long hole shape that is long in the vertical direction so that the mounting position can be slightly changed in the vertical direction. Further, the upward standing piece 3b of the interval holding metal 3 attached to the panel body 10 is configured to be engaged with and held by the locking metal 2 of the interior panel 1 disposed above it. Is a panel of the interior panel 1 provided on the upper part of each of the standing pieces 3b of a plurality of (three in the figure) spacing metal fittings 3 attached to the upper side of the panel body of the lower interior panel 1. The plurality of (three in the figure) locking metal fittings 2 attached to the lower side of the main body are respectively engaged and held. More specifically, each of the standing pieces 3b is connected to each locking metal 2 and It is the structure which inserts in the clearance gap formed between this interior panel 1, and carries out engagement holding | maintenance.

  As described above, in the interior panel for tunnel according to the present invention, the interval holding bracket 3 is integrally attached to the upper side portion of the panel body 10 in advance, and the upward standing piece 3b provided on the interval holding bracket 3 is engaged. Since the metal fitting 2 is integrally attached to the lower side portion of the panel body 10, the number of locking metal fittings can be reduced as compared with the conventional one, and the interior panel 1 can be attached to the inner surface of the tunnel lining. Since the locking metal fitting 2 and the interval holding metal 3 are attached to the panel body 10 in advance, the interval holding metal 3 and its mounting bolts 51 and the like are separated from the panel main body 10 when the interior panel 1 is laid. Therefore, it is possible to prevent the parts from being forgotten or lost.

  Next, a specific example in the case where the interior treatment is performed on the inner surface of the tunnel lining using the tunnel interior panel as described above will be described. Fig. 4 shows the inner surface of the tunnel lining using the interior panel for tunnels as described above, and in particular in this example fire-resistant treatment. Fig. 4 (a) is a front view (inner view) seen from inside the tunnel. ), FIG. 5B is a longitudinal side view thereof, FIG. 5A is an enlarged view of a part of FIG. 4A, FIG. 5B is a plan view thereof, FIG. 5C is a bottom view thereof, and FIG. ) Is a side view.

  In this example, the inner panel 4a of the tunnel lining 4 formed by a tunnel lining segment or the like, in particular, the interior panel 1 from the lower part to the upper part on both sides of the tunnel is shown in FIG. It was laid side by side in the tunnel axis direction). Each interior panel 1 has an interval holding metal fitting 3 integrally provided on the upper side portion of each panel body 10 embedded in a mounting bolt 51 inserted through the through hole 3h of the base portion 3a and the tunnel lining inner surface 4a. It is attached to the tunnel lining inner surface 4a with the insert nut 52, and the upright piece 3b provided on the upper part of the interval holding metal fitting 3 is engaged with the locking metal fitting 2 provided on the lower side portion of the upper interior panel 1 to be connected and held. This is the configuration. In the figure, 11 is a seal member such as a flame entrainment preventive member interposed between the interior panel 1 and 1 adjacent in the left-right direction (tunnel axis direction) in FIG. 4 and the tunnel lining inner surface 4a. Provide.

  In constructing the interior treatment configured as described above, for example, the interior panel 1 is constructed such that the interior panel 1 is piled up in order from the lower side on both sides of the tunnel lining inner surface 4a. 1 is attached to the panel main body 10 in advance as shown in FIG. 6A, and the lower part of the interior panel 1 disposed on the lower side is attached. It fixes using the space | interval holding | maintenance metal fitting 3 similar to the above, or an appropriate fixing means. Next, the interval holding metal fitting 3 provided on the upper side of the lower interior panel 1 is attached to the tunnel lining inner surface 4a, and the through hole 3h provided in the base 3a of the interval holding metal 3 is shown in FIG. If the mounting bolt 51 is inserted as described above and the bolt 51 is screwed into the insert nut 52 embedded in the tunnel lining inner surface 4a, it can be easily mounted as shown in FIG.

  Next, on the upright piece 3b of the upper portion of the spacing metal fitting 3 attached to the tunnel lining inner surface 4a as described above, it is provided on the lower side of the interior panel 1 disposed on the upper side as shown in FIG. If the upright piece 3b is inserted into the gap between the panel body 10 and the locking bracket 2 while the upper interior panel 1 is lowered, the same It can be easily inserted and engaged as shown in FIG. At that time, if the upright piece 3b is inclined to the opposite side of the tunnel lining inner surface 4a, that is, the panel side as it goes upward as shown in FIG. It becomes easy.

  After the upper panel 1 is arranged above the lower interior panel 1 as described above, and the engaging piece 2 of the upper panel 1 is engaged with the upright piece 3b of the lower interior panel 1, The spacing holding metal fitting 3 provided on the upper side of the upper panel 1 is attached to the tunnel lining inner surface 4a in the same manner as described above, and shown in FIGS. 7 (a) to 7 (d) above the upper panel 1. Thus, the upper panel 1 may be laid in the same manner as described above. As a result, the interior panel 1 can be easily laid in the circumferential direction of the tunnel, and after the circumferential laying has been completed, the same operation as described above can be repeated in the lateral direction of the tunnel axis. For example, the interior panel 1 can be laid in a desired range of the tunnel lining inner surface 4a.

  As described above, since the interior panel 1 according to the present invention has the above-described configuration, when the interior panel 1 is constructed so as to be stacked in order from the bottom on the tunnel lining inner surface 4a, the interior panel 1 positioned on the lower side. After attaching the interval holding fitting 3 provided in advance on the upper side of the tunnel lining inner surface 4a to the upward standing piece 3b provided on the upper portion of the interval holding fitting 3, the lower side of the upper interior panel 1 Construction can be performed very easily simply by engaging the locking metal fittings 2 provided on the. Therefore, unlike the prior art, there is no trouble of attaching the interval holding metal 3 to the inner surface of the tunnel lining while engaging the lower locking metal 2, and it is possible to lay it easily, inexpensively and quickly with an extremely simple configuration. It becomes possible, and construction time and construction cost can be greatly reduced. In particular, when the interior panel 1 is constructed so as to be stacked in order from the lower side, a mounting bolt is provided to attach the spacing bracket to the inner surface of the lining because the spacing bracket is provided directly on the upper side of the panel body. The work of screwing 51 can be performed accurately, and the fastening at the upper side of the panel can be reliably performed.

  In the above embodiment, the locking metal fitting 2 and the interval holding metal fitting 3 are attached using the insert nuts 22 and 32 embedded in the panel body 10, respectively, but their attaching means can be changed as appropriate. For example, as shown in FIG. 8, bolts 23 and 33 and nuts 24 and 34 penetrating the panel body 10 may be attached. In the figure, reference numerals 23a and 33a denote non-threaded circumferential grooves for preventing the nuts 24 and 34 from dropping off, which are formed in the vicinity of the tip portions of the bolts 23 and 33. Even if the nuts 24 and 34 are loosened, they are It is the structure which prevents that it moves to the volt | bolt front end side rather than the circumferential grooves 23a and 33a, and falls off, and can be provided as needed.

  In the above embodiment, the interval holding metal fitting 3 is attached to the inner surface of the lining using the insert nut 52 embedded in the tunnel lining inner surface 4a. The means can be changed as appropriate. FIG. 9 shows an example thereof, in which the spacing metal fitting 3 is attached to the tunnel lining inner surface 4a by using an anchor 53 placed on the tunnel lining inner surface 4a. In the case shown in the figure, an expandable anchor is used as the anchor 53. A bolt 53a is screwed into a female screw hole (not shown) formed in the anchor 53, and the bolt 53a is passed through the spacing metal fitting 3. The nut 3b is inserted into the hole 3h, and the base of the spacing metal fitting 3 is clamped and fixed between the nut 53b screwed to the bolt 53a and the anchor body or tunnel lining inner surface 4a.

  FIG. 10 shows another example. A stud bolt is used as one of the mounting methods when the tunnel lining inner surface 4a side of a steel shell submerged tunnel or the like is covered with a metal plate such as a steel shell, that is, a steel plate. An example is shown. That is, the stud bolt 54 is placed on the inner surface of the steel shell 4s provided on the tunnel lining inner surface 4a side by welding or striking, and the above-mentioned spacing holding metal fitting 3 is connected by the stud bolt 54 and the nut 55 screwed thereto. It is attached to the tunnel lining inner surface 4a. In FIG. 9 and FIG. 10, the configuration other than the above is the same as that of the above embodiment, and the same function and effect can be obtained.

  Further, the present invention can also be applied to a tunnel lining inner surface formed by an arcuate steel segment 40 as shown in FIG. That is, the steel segment 40 in the illustrated example includes a pair of girders 41 extending in the circumferential direction of the tunnel, a joint plate 42 serving as a connection surface between the segments adjacent in the circumferential direction, and the like. In addition, a central curved plate 43 is provided substantially in parallel with the central curved plate 43, and an opening recess G is provided between the central curved plate 43 and the beam members 41 and 41. In the figure, 44 is a reinforcing rib, and 45 is a reinforcing plate interposed in the radial direction between the reinforcing rib 44 and the central curved plate 43 and the outer peripheral surface of the girder 41.

  When attaching the spacing metal fitting 3 to the inner surface of the tunnel lining formed of the steel segment 40 as described above, the inner surfaces (inner surfaces of the above-mentioned beam member 41, joint plate 42, central curved plate 43 and reinforcing rib 44). A stud bolt 54 as shown in FIG. 10 may be placed on the peripheral surface) side, and the interval holding metal fitting 3 may be attached to the tunnel lining inner surface 4a in the same manner as described above, or the above-mentioned girder 41 or reinforcing plate. When attached to a member arranged in a direction (radial direction) substantially orthogonal to the tunnel axis, such as 45, it may be attached via a bracket or the like.

  FIG. 12 shows an example thereof, in which the spacing metal fitting 3 is attached to the beam member 41 via a bracket 6 having an L-shaped cross section. In the case of the figure, the bracket 6 is attached to the side surface of the beam member 41 by a stud bolt 61 driven on the side surface of the beam member 41 and a nut 62 screwed to the bolt 61. The spacing metal fitting 3 is attached to a surface substantially orthogonal to the beam member 41 with a bolt 56 passing therethrough and a nut 57 screwed into the bolt 56. The bolt 56 is also formed with a circumferential groove 56a for preventing the nut 57 from falling off, similar to the above. Other configurations are the same as those of the above-described embodiment, and the same operational effects can be obtained.

  As described above, the interior panel for a tunnel according to the present invention and the interior panel mounting method on the inner surface of the tunnel lining using the same have the above-described configuration. It is possible to lay it inexpensively and quickly, and the construction time and construction cost can be greatly reduced. Moreover, as said interior panel, it is applicable also when laying a fireproof board, a line-of-sight guidance board, and other various interior panels on the inner surface of a tunnel lining, and it can be used also effectively industrially. .

(A) is a rear view showing an embodiment of a tunnel interior panel according to the present invention, (b) is a plan view, (c) is a bottom view, (d) is a side view, and (e) is e in (a). Partial enlarged sectional view along -e. The perspective view of the said interior panel. The one part enlarged perspective view of the state which has arranged the above-mentioned interior panel up and down. (A) is the front view (tunnel inner surface figure) seen from the tunnel of the state which laid the said interior panel in the tunnel lining inner surface, (b) is the vertical side view. 4A is an enlarged view of a part of FIG. 4A, FIG. 4B is a plan view thereof, FIG. 4C is a bottom view, and FIG. (A)-(d) is explanatory drawing of the state which lays the said interior panel. Explanatory drawing of the state which lays the said interior panel further upwards. (A) is the rear view which shows other embodiment of the interior panel for tunnels by this invention, (b) is a top view, (c) is a bottom view, (d) is a side view, (e) is in (a) The expanded sectional view of a part along ee. (A) is a front view of a part of the construction state showing an example of changing the means for attaching the spacing metal fitting to the tunnel lining inner surface, (b) is a plan view thereof, (c) is a bottom view, and (d) is a side view. Figure. (A) is a front view of a part of the construction state showing another modified example of means for attaching the interval holding metal fitting to the inner surface of the tunnel lining, (b) is a plan view thereof, (c) is a bottom view, (d) Is a side view. The perspective view which shows an example of steel segments. (A) is a partial front view showing an example of attachment of a spacing metal fitting to the tunnel lining inner surface using the steel segment, (b) is a plan view thereof, (c) is a bottom view, and (d) is a bottom view thereof. Side view. (A)-(d) is explanatory drawing of the state which lays the conventional interior panel.

DESCRIPTION OF SYMBOLS 1 Interior panel 10 Panel main body 2 Locking fixture 21 Bolt 22 Insert nut 23 Through bolt 24 Nut 3 Space | interval holding metal 3a Base 3b Standing piece 3c Drooping piece 31 Bolt 32 Insert nut 33 Through bolt 34 Nut 4 Tunnel covering 4a Inner surface 40 Steel Segment 41 Girder material 51 Mounting bolt 52 Insert nut 53 Anchor 53a Bolt 53b Nut 54 Stud bolt 55 Nut 56 Through bolt 57 Nut 6 Bracket 61 Stud bolt 62 Nut

Claims (4)

A tunnel interior panel laid side by side in the vertical direction at a predetermined interval between the inner surface of the tunnel lining and the inner surface of the lining through an interval holding metal fitting,
A locking bracket is integrally provided on the lower side of the back side of the panel body of the interior panel, and a spacing holding bracket having an upward standing piece that engages with the locking bracket is provided on the upper side of the back side of the panel body. An interior panel for tunnels characterized by being provided integrally with the part.   The interior panel for a tunnel according to claim 1, wherein the interval holding metal fitting and the locking metal fitting are each attached to and supported by the panel main body with an insert nut embedded in the panel main body and a bolt screwed to the insert nut.   The interior panel for a tunnel according to claim 1, wherein the spacing metal fittings and the locking metal fittings are mounted and supported on the panel main body by bolts penetrating the panel main body and nuts screwed thereto.   The interior panel for tunnel according to any one of claims 1 to 3 is constructed so as to be stacked in order from the bottom on the inner surface of the tunnel lining, and the interval provided at the upper side of the panel body of the interior panel located on the lower side The holding bracket is fixed to the inner surface of the tunnel lining, and the holding bracket provided on the lower side of the panel body of the upper interior panel is engaged with the upright standing piece provided on the upper portion of the interval holding bracket so as to be connected and held. Interior panel mounting method on the inner surface of the tunnel lining.

Images