JP2533004Y2 - Insulation plate joint structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of a heat insulating plate used for preventing a freezing of a tunnel.

[0002]

2. Description of the Related Art Various types of heat insulating plates for preventing freezing of tunnels have been proposed and put to practical use.

[0003] The conventional heat insulating plate has many problems in joining. That is, the conventional heat insulating plate is provided integrally with a protective layer made of an inorganic material such as glass fiber on the surface of a heat insulating layer made of a closed-cell foam, and further, when imparting waterproofness,
In general, a water blocking layer is adhered to the back surface and a water passing layer is provided on the back surface of the heat insulating layer or the water blocking layer. Shall be airtightly bonded and adhered to the part of the primary or secondary lining to be insulated.

However, at the time of joining the heat insulating plates, conventionally, the joining ends are abutted with or without an interposing member therebetween, and a coking material or a sealing material is applied or injected therebetween. In doing so, the heat insulating plates are joined and integrated, so that not only the work is troublesome, but also the application and injection work of the coking material and the seal material requires skill and is satisfactory. If the proper joining and integration were not performed, the heat insulating effect might be reduced at this joining portion. In addition, the labor costs required for the work had to be large.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, the present invention has an excellent heat insulating effect at a joint-integrated portion.
An object of the present invention is to provide a joint structure of a heat insulating plate that can stably prevent a freezing of a tunnel at low cost.

[0006]

SUMMARY OF THE INVENTION The present invention has been made for the purpose of solving the above-mentioned problems, and has a structure comprising a surface of a heat insulating material made of a flat rectangular independent foam having appropriate elasticity and thickness. A plurality of ridges and grooves are formed on one side of a synthetic resin sheet on the joint end side of a heat insulating plate having a protective layer made of glass fiber fabric or the like adhered thereto, and the ridges are closely fitted into the grooves. The rail-shaped fastener formed so as to be fixed by projecting the fastener portion, and the ridge of the fastener of one heat insulating plate is fitted and engaged with the groove of the fastener of the other heat insulating plate and connected. It is characterized by doing so.

[0007]

According to the present invention, a plurality of ridges and grooves are formed on one side of a synthetic resin sheet on the joint end side of the heat insulating plate so that the ridges fit tightly into the grooves. Since the formed rail-shaped fastener is fixed by projecting the fastener portion, when joining adjacent heat insulating plates, the tip of the ridge of the fastener of one heat insulating plate is inserted into the groove of the other heat insulating plate. If they are fitted from below and slid, the two fasteners fit tightly by an extremely simple operation, and the two heat insulating plates are easily joined and integrated.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a state before the heat insulating plate is joined in the present invention, FIG. 2 is an enlarged cross-sectional view of the joined state, and FIG. 3 is a state where the heat insulating plate is stuck on a tunnel lining by the joint structure of the present invention. FIG.

In FIG. 1, A is a heat insulating plate formed by attaching a protective layer 2 made of glass fiber fabric or the like to the surface of a heat insulating material 1 made of a flat rectangular independent foam having appropriate elasticity and thickness. Is provided with a spacer 4 for forming the water-permeable layer 3.

Reference numeral 5 denotes a rail-shaped hermetic fastener fixed by bonding to the joint end of the heat insulating plate A, and a synthetic resin sheet 51.
A plurality of ridges 52 and grooves 53 are formed on one side of
The synthetic resin sheet 51 is bonded to the heat insulating plate A such that the fastener portion F slightly protrudes from an end of the heat insulating plate A. That is, in the present invention, the rail fastener 5 is used as a joint means.

Thus, as described above, the rail-shaped fastener 5
When joining, the fastener portion F 'of the other heat insulating plate A' to be joined is arranged below the fastener portion F of one heat insulating plate A, and the ridge 52 and the groove 53 of both are attached. And the insulating plate A 'is slid upward, so that both fastener portions F and F'
Are watertightly engaged, and the heat insulating materials 1 and 1 'are pressed against each other and joined without any gap.

Therefore, when attaching the heat insulating plate A to the tunnel lining T, one heat insulating plate A is placed on the lining T with the back side, that is, the side on which the fastener 5 is attached, and joined from below. If the heat insulating plates A 'to be joined as described above, the two heat insulating plates A are joined in an airtight manner, so that the heat insulating effect becomes extremely good,
Also, even if there is water leakage from the lining T, the water flows down through the water-permeable layer 3 and the surface of the heat insulating plate A because both the heat insulating plates A and A 'have a water stopping effect due to the independent foam. There is almost no risk of seepage on the side. Further, when the lining T is a primary lining, a secondary lining is constructed on the protective layer 2 so that a tunnel free from water leakage and freezing can be constructed. In addition, the effect of preventing icicles in the tunnel can be obtained by the effect of preventing water leakage and freezing.

In the above embodiment, the two heat insulating plates A and A 'to be joined are provided.
When forming the fastener portions F and F 'at the opposite ends of the
The fitting of the ridge 52 and the groove 53 in the rail-shaped fastener 5
Synthetic resin sheets at both fasteners F and F 'so that the opposite end faces of the heat insulating plates A and A' can be fitted in a state where they can be brought into close contact with each other.
Although the fixing positions for the heat insulating plates A and A 'of 51 are set, in the present invention, the fasteners F and F for both the heat insulating plates A and A' are set.
The formation of F ′ may be as shown in FIG.

That is, in the embodiment shown in FIG.
F ′ is formed so as to protrude outward from the opposite ends of the heat insulating materials A and A ′, and the fastener portions F and F ′ are fitted to each other so as to have an appropriate width between the heat insulating materials A and A ′. The two heat insulating materials A and A 'are joined together with the gap formed, and the heat insulating materials A and A' are inserted into the gap.
The heat insulating materials A and A 'are tightly integrated with the interposed material As by inserting and inserting the interposed material As. In this structure, since a gap is formed between the two heat insulating materials A and A 'at the time of joining, the work of fitting the two fastener portions F and F' becomes easier.

[0015]

The present invention is as described above, and a plurality of ridges and grooves formed by the formation of these ridges are formed as fitting means of the heat insulating plate so as to be closely fitted to each other. Since the rail-shaped fastener is used, if the heat insulating plate is joined and connected on the primary lining of the tunnel as shown in the embodiment, the attaching work can be performed very easily, and the core can be cohered. Since no king material is used, uniform and stable construction is possible, economical and excellent in heat insulation and waterproofing after sticking. Therefore, the use of this material may cause freezing and water leakage. Tunnels can be constructed less expensively than before.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state before a heat insulating plate is joined in the present invention.

FIG. 2 is an enlarged cross-sectional view of a state where the heat insulating plates of FIG. 1 are joined.

FIG. 3 is an enlarged cross-sectional view showing another example of a state where a heat insulating plate is joined.

FIG. 4 is a cross-sectional view of a state where a heat insulating plate is stuck on a tunnel lining by the joint structure of the present invention.

[Explanation of symbols]

 A, A 'Insulation plate 1 Insulation material 2 Protective layer 3 Water permeable layer 4 Spacer 5 Rail fastener 51 Synthetic resin sheet 52 Ridge 53 Groove F, F' Fastener part T Tunnel lining

Claims (2)

(57) [Scope of request for utility model registration] 1. A synthetic resin screen is attached to a joint end of a heat insulating plate in which a protective layer made of glass fiber fabric or the like is adhered to the surface of a heat insulating material made of a flat rectangular independent foam having appropriate elasticity and thickness. A rail-shaped fastener formed by a plurality of ridges and grooves on one side of the groove so that the ridges fit tightly into the grooves is fixed by projecting the fastener portion. A joint structure for a heat insulating plate, characterized in that a ridge of a fastener of the plate is fitted to and engaged with a groove of a fastener of the other heat insulating plate for connection. 2. The joint structure for a heat insulating plate according to claim 1, wherein a spacer is provided on the other surface of the heat insulating plate.