JP3556621B2 - Refractory material mounting structure inside tunnel lining - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mounting structure of the refractory material to lining the inner surface which is laid in the tunnel.
[0002]
[Prior art]
In recent tunnels, especially road tunnels, fire protection measures are required to prevent the deterioration and damage of the tunnel lining due to fire, etc. It has been proposed to coat a refractory material such as an attached metal plate.
[0003]
In this case, in the past, refractory materials were directly attached to the inner surface of the tunnel lining using so-called post-installed anchors, but the work of anchoring requires work such as blacking out, drilling, and anchoring. However, there is also a problem that dust is generated by drilling holes.
[0004]
In particular, in a shield tunnel where fire resistance is required, it is not preferable to make a hole in the segment, and even if it is unavoidable, a hole cannot be freely made at an arbitrary position. In addition, tunnel lining may move due to earthquakes or changes over time in the ground.If the refractory material is firmly fixed, it will not be able to follow the movement of the lining and the refractory material will be damaged or fall. There was a fear.
[0005]
[Problems to be solved by the invention]
The present invention has been proposed in view of the above problems, and an object thereof is to provide a refractory material attached structure to better tunnel lining the inner surface of durability and workability.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a structure for attaching a refractory material to a tunnel lining according to the present invention has the following configuration. That is, mounting the refractory support to the tunnel lining the inner surface, the refractory material of the locking tool attached to the refractory material into the tunnel lining the inner surface so as to be engaged with and held by the engaging portion formed on the refractory material supporting member In the mounting structure, the refractory material supporting member is formed of a strip material, and the refractory material supporting member made of the strip material is formed with a bent portion protruding toward the tunnel lining side, so that the refractory material is tunnel-coated. It is characterized in that it is held at a predetermined interval with respect to the inner surface of the work .
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
It will be specifically described below based on the refractory mounting structure of the tunnel lining according to the invention to the embodiment shown in FIG.
[0008]
FIG. 1 is a perspective view showing an embodiment of a structure for attaching a refractory material to a tunnel lining according to the present invention, and FIG. 2 is a plan view showing an attached state.
[0009]
In the drawing, reference numeral 1 denotes a refractory material support member attached to the inner surface of the tunnel lining F. In the present embodiment, a metal strip material such as a steel plate having a predetermined width is used. At substantially the center in the longitudinal direction of the support member 1 made of the strip material, a concave groove-shaped engaging portion 11 for engaging and holding the locking member 3 attached to the refractory material 2 is provided. The protrusions 11a are integrally formed on the upper sides of both sides.
[0010]
The locking member 3 is made of a metal plate such as a steel plate, and has a base 3 a fixed to the refractory material 2 by welding or the like, extends in a direction away from the base 3 a, and floats with respect to the refractory material 2. The bent portions 3b and 3b are integrally formed, and the base portion 3a is arranged to face the engaging portion 11, and the bent portion 3b is formed as a projection 11a of the engaging portion 11 in FIG. In this configuration, the stopper is brought into contact with the edge so as to be disposed on the back surface side, and is retained and locked.
[0011]
A bent portion 12 protruding toward the tunnel lining F is formed in the vicinity of both ends in the longitudinal direction of the support member 1. Bolts 4 are inserted into holes formed in the bent portion 12 and provided on the tunnel lining F side. It is configured to be screwed into a receiving member 5 such as a female screw anchor or an insert and tightened and fixed.
[0012]
The receiving member 5 is preferably buried in a predetermined position in the tunnel lining F in advance. For example, when a concrete segment S as shown in FIG. When the mold is molded at a factory or the like, the receiving member 5 may be set and embedded as a metal insert in a mold. In the case where lining concrete is directly cast on the inner surface of the tunnel, the receiving member 5 may be buried in a predetermined position at the time of casting.
[0013]
When the refractory material 2 is attached, the segment S is laid in a tunnel as shown in FIG. 4 when the segment S is used, and when the lining concrete is directly cast in the tunnel as shown in FIG. It may be performed after the installation work is completed, and more preferably, after inverting concrete such as a road or a track of a tunnel.
[0014]
First, the refractory material support member 1 is attached to the inner surface of the tunnel lining using the receiving member 5 embedded in the tunnel lining F. In the illustrated example, the bolt 4 may be inserted through a hole formed in the bent portion 12 of the support member 1 and screwed into a female screw hole or the like of the receiving member 5 to be tightened and fixed.
[0015]
Next, the locking member 3 fixed to the refractory material 2 by welding or the like is engaged with the engaging portion 11 of the support member 1. In the case of the drawing, the base 3 a of the locking member 3 is And the bent portion 3b of the locking member 3 may be brought into contact with the edge of the engaging portion 11 to stop and lock.
[0016]
In the embodiment shown in the drawing, the locking members 3 are provided one by one at the center in the width direction of the upper and lower ends of the refractory material 2 and are respectively engaged with the engaging portions 11 of the support member 1. When a plurality of refractory materials 2 are attached in the vertical direction as shown in FIG. 5, the refractory materials 2 are vertically attached as shown in FIG. In this configuration, the support members 1 are engaged and held.
[0017]
The material of the refractory material 2 is made of metal such as stainless steel, ceramic or ceramic, or any other appropriate material. A composite material in which a ceramic wool 22 or the like is laminated on one surface of a plate material 21 made of the above material can also be used. FIGS. 6 and 7 show an embodiment in which the above-described composite material is used. The size of the refractory material in the thickness direction of the refractory material is formed larger than the thickness of the ceramic wool 22 and the base portion is formed. 3a may be fixed to the plate 21 by welding or the like. The other configuration is the same as that of the above embodiment, and the same operation and effect can be obtained.
[0018]
【The invention's effect】
As described above, the structure for attaching a refractory material to the inner surface of a tunnel lining according to the present invention is such that the refractory material supporting member 1 is attached to the inner surface of the tunnel lining F, and the locking member 3 attached to the refractory material 2 supports it is so arranged to be engaged with and held by the engaging portion 11 formed on member 1, the refractory material 2 can be easy and reliably mounting support on the tunnel lining inner surface. Further, since the refractory material is not directly attached to the inner surface of the tunnel lining with bolts or the like as in the conventional case, even if the lining moves as in the case of an earthquake, the movement can be followed. Furthermore, since the support member 1 and the locking member 3 can be manufactured by a simple processing of a plate material such as a steel plate, they can be mass-produced at low cost.
[0019]
Further, by forming a bent portion 12 protruding toward the tunnel lining side in the refractory material supporting member 1 so as to hold the refractory material 2 at a predetermined interval with respect to the inner surface of the tunnel lining, for example, Even if there is a step or unevenness in the joint portion, the refractory material 2 can be satisfactorily laid without being in the way. Moreover, the thermal effect on the tunnel lining due to a fire or the like can be reduced by the heat insulating effect of the gap between the refractory material 2 and the inner surface of the tunnel lining.
[Brief description of the drawings]
FIG. 1 is a perspective view showing one embodiment of a structure for attaching a refractory material to an inner surface of a tunnel lining according to the present invention.
FIG. 2A is a plan view showing a state where a refractory material is attached.
(B) is an enlarged view of a part thereof.
FIG. 3 is a perspective view of a segment in which a receiving member is embedded in advance.
FIG. 4 is a perspective view showing a construction state of a segment.
FIGS. 5A to 5C are explanatory views showing a procedure for attaching a refractory material.
FIG. 6A is a plan view showing a state in which another refractory material is attached.
(B) is an enlarged view of a part thereof.
FIGS. 7A to 7C are explanatory views showing a procedure for attaching another refractory material.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 refractory material support member 11 engaging portion 12 bent portion 2 refractory material 3 locking member 3a base 3b bending portion 4 bolt 5 receiving member F tunnel lining S segment

Claims (2)

Install the refractory material supporting member in a tunnel lining the inner surface, refractory mounting structure of the locking tool attached to the refractory material into the tunnel lining the inner surface so as to be engaged with and held by the engaging portion formed on the refractory material supporting member The refractory material supporting member is formed of a strip material, and the refractory material supporting member made of the strip material is formed with a bent portion protruding toward the tunnel lining side, so that the refractory material is formed on the inner surface of the tunnel lining. A structure for attaching a refractory material to the inner surface of a tunnel lining, wherein the refractory material is held at predetermined intervals with respect to the inner surface of the tunnel lining. The locking member is formed of a metal plate such as a steel plate, and has a base fixed to the refractory material by welding or the like, and a bent portion extending in a direction away from the base and floating with respect to the refractory material. parts and a unitary body of refractory material attachment structure of the locking tool into the tunnel lining the inner surface of claim 1 wherein so as to engage the groove-like engaging portion formed on the refractory material supporting member .

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