JPH0261568B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for installing a structure. More specifically, it relates to an installation structure in which the spaces between the sleepers supporting the rails and the bridge girders and between various devices and the foundations (hereinafter referred to as "spaces between structures") are filled with filler.

As shown in the first diagram, this type of conventional installation part structure includes a liquid agent such as a flexible non-woven fabric having continuous pores between the sleeper 2 supporting the rail 1 and the roadbed or bridge girder 3. Impregnation material 5
, an elastic frame 6 surrounding the outer peripheral surface of the liquid-impregnated material, and a curable liquid resin or cement having an adhesive function impregnated in the liquid-impregnated material 5 (hereinafter referred to as "liquid"). A structure is formed by inserting a pad 7 consisting of A flexible bag 9 made of molecular film material is inserted, and the liquid agent 1 is injected into the bag 9 through the injection port 10.
1, and then hardened the liquid (Japanese Patent Publication No. 52-47203). There is a structure in which a nonwoven fabric 12 impregnated with a liquid agent is inserted and then the liquid agent is cured.

In the structure shown in FIGS. 1 and 3, the pads 7 or the nonwoven fabric 12 are bonded to the sleepers 2 and the bridge girder 3 or the roadbed 8 and are integrated, so the pads 7 or the nonwoven fabric 12 may shift due to vibration or the like and come off. It is useful as a pad. However, the workability is poor due to the solvent impregnation step. Furthermore, the structure shown in FIG. 1 requires a step of integrating the liquid agent-impregnated material 5 and the frame 6, resulting in particularly poor workability. Furthermore, in the structure shown in Fig. 3, the nonwoven fabric 12 is connected to the rail 1 and the sleeper 2 during installation.
A large amount of the liquid agent impregnated into the nonwoven fabric leaks out due to the pressure of the load, which not only wastes a large amount of liquid and is uneconomical, but also causes a large amount of staining of the surrounding area due to the large amount of leaked liquid agent or its cured product. There is a drawback.

On the other hand, the structure shown in FIG. 2 uses a flexible bag 9 made of an impermeable polymer film material.
This has the advantage that the liquid agent 11 does not leak from the bag and there is no risk of staining the surrounding area.
Since the pads are not fixed and glued to the roadbed 8, they may shift due to vibrations, etc. and come off, and not only will they no longer function as a pad, but also the air inside the bag 9 or the air contained in the fluid will Since it is extremely difficult to remove, air bubbles remain between the bag 9 and the cured liquid or inside the cured liquid, resulting in a gap between the bag 9 and the cured liquid.
There is a drawback that the strength and durability of the filling part are low.

The present invention has been made to improve the above-mentioned drawbacks, and has the purpose of improving air permeability between structures.
A structure for installing a structure is provided by inserting a bag having liquid permeability and flexibility, filling the bag with a curable liquid having an adhesive function, and then curing the liquid. . In the present invention, a bag made of a breathable material, such as a non-woven fabric, is used as the bag, so air inside the bag and air contained in the liquid can be easily removed, and the liquid can permeate out of the bag. By curing, the bag can be bonded to the structure, and the amount of liquid agent leaking out of the bag can be reduced. In addition, the process of impregnating the liquid agent is omitted to improve workability.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 4 is a front view showing a main part of the first embodiment in cross section, and shows the case where the present invention is applied to the installation of a device.

In the first embodiment, a bag 14 made of a non-woven fabric having breathability, liquid permeability and flexibility is inserted between the device 13 and the roadbed 8, and a hardened bag 14 having an adhesive function is inserted into the bag 14. This is an installation part structure of a structure that is filled with a liquid agent 16 and then hardened.

As the base material of the bag 14 of the present invention, the water permeability coefficient (JIS
A1218) is 0.005~0.2cm/sec, preferably 0.01~
A 0.05 cm/sec woven fabric or non-woven fabric can be used, and its material can be arbitrarily selected from cotton, juute, hemp, polypropylene, polyamide polyethylene terephthalate, polyacrylic, and the like.

Further, as the hardening liquid agent 16 having an adhesive function, liquid hardening resins such as polyurethane, epoxy resin, and unsaturated polyester resin, or these liquid resins, and inorganic aggregates such as sand, cement, plaster, and calcium carbonate are used. mixtures with or portland cement, fly ash cement,
A mixture of hydraulic cement such as gypsum, dolomite, etc., inorganic aggregate, and water, or an aqueous emulsion of these cements, inorganic aggregate, and thermoplastic resin, or rubber latex, such as SBR latex, acrylic resin emulsion, and polyvinyl acetate. Emulsions, mixtures with styrene/acrylic acid ester copolymer emulsions, etc. can be used, and those having a viscosity of 30 to 100 poise at 20°C are preferably used.

A liquid agent with a viscosity lower than 30 poise will leak in a large amount after it is filled into the bag 14 until it hardens, and will likely cause uneven adhesion to the final structure. 100 again
In a liquid with a viscosity higher than Poise, air in the liquid is difficult to separate, and air bubbles remaining after curing may reduce strength and durability.

When installing the device 13, the bag 14 is placed on the roadbed 8 as shown in the fourth figure, and the device 13 whose position and level are adjusted using jacks, liners, etc. is placed above it. After that, use an injection pump or injection gun to inject 0.1Kg/cm ² into the bag 14 through the injection port 17.
The bag is filled with the liquid agent 16 at the above pressure. At this time, the air in the bag 14 and the air contained in the liquid agent 16 are degassed through the countless pores (eyes) of the bag 14, and the liquid agent 16 permeates through the countless pores of the bag 14 to form the device. It spreads over the lower surface of the bag 13 and the upper surface of the roadbed 8, adheres the bag 14, the device 13, and the roadbed 8, and hardens.

FIG. 5 is a perspective view showing a second embodiment, in which the present invention is applied to track installation.

In the second embodiment, a bag 14 having air permeability, liquid permeability and flexibility is inserted between the sleeper 2 supporting the rail 1 and the bridge girder 3, and the bag 14 has an adhesive function. It is filled with a curable liquid agent 16 having the following properties and then hardened. In this case as well, the first
The sleepers 2 supporting the rails 1 can be installed in the same manner as in the embodiment.

FIG. 6 is a cross-sectional view showing a third embodiment, in which the present invention is applied to crack repair work in a tunnel. A permeable and flexible bag 14 is manually inserted, a hardening liquid 16 having an adhesive function is filled into the bag through an injection port 17 of the bag, and the liquid 16 is then hardened to form a tunnel arch 17. This is a structure in which 4 was repaired between 18 and 18.

The present invention may be applied between a roadbed and sleepers, or between a rail and sleepers, etc., and used when structures are adhesively fixed and installed together in a predetermined level positional relationship. , 2, but also can be applied to installation between structures that are vertically positioned, as in Embodiment 3. In addition, if it is only necessary to glue the bag 14 and one structure, use a sealer etc.
The upper or lower surface of 4 may be subjected to an opaque treatment.

In particular, if the surface of the bag 14 that does not come into contact with the structure (both sides of the bag 14 in the case of Examples 1 and 2) is treated to make it impermeable, unnecessary leakage of the liquid agent 16 to the side that does not come into contact with the structure can be avoided. It is possible to prevent waste of liquid and contamination of the surrounding area due to leakage.

Although the above explanation describes the case where the liquid agent is injected at the construction site, it is also possible to design the curing time, inject it into the bag 14 in advance at the on-site factory, and then insert it at the site. Further, the solvent may be cured by using a curing agent or by heating, but a liquid agent that can be cured at room temperature is preferable from the viewpoint of construction.

As is clear from the above description, according to the present invention, a bag having air permeability, liquid permeability and flexibility is inserted between the structures, and a hardened bag having an adhesive function is inserted into the bag. The air inside the bag and the air contained in the liquid can be easily removed when the liquid is injected due to the air permeability of the bag. Decrease in durability can be avoided.

The permeability of the bag allows the liquid to permeate outside the bag, allowing the bag to be reliably adhered to a structure, preventing displacement due to vibrations, etc., and allowing the bag to always function as a pad.

Since the bag is permeable but not permeable, the amount of liquid that leaks out of the bag and is wasted can be reduced, improving economic efficiency and reducing the degree of contamination of the surrounding area.

Since this method directly injects the liquid into the bag, work efficiency can be improved compared to the impregnation method.

It has the following advantages.

〔Example〕

A bag with a length of 200 mm and a width of 200 mm is made using a polypropylene non-woven fabric with a thickness of 2 mm and a water permeability coefficient of 0.03 cm/sec, and an injection nozzle with an inner diameter of 5 mmφ is attached to the injection port of this bag, and the bag is inserted between the concrete and the mold steel. (distance = length 10 mm), and room temperature curing polyurethane adhesive was injected into the bag at a pressure of 2 kg/cm ² using an injection pump.

When the adhesive strength between the concrete and the filling layer was measured after the adhesive was completely cured, it was found that the adhesive broke on the concrete member side. Its strength was 20Kg/cm ² .

Note that, after filling, the bubble rate in the cured polyurethane was 0.1% or less (according to the specific gravity method).

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first conventional example, FIG. 2 is a front sectional view showing a second conventional example, FIG. 3 is a front view showing a third conventional example, and FIG. 4 is a front view showing a third conventional example. FIG. 5 is a front view showing the main part of the first embodiment in cross section, FIG. 5 is a perspective view showing the second embodiment of the present invention, and FIG.
It is a sectional view showing an example. 1...Rail, 2...Sleeper, 3...Bridge girder, 4
... Between, 8... Roadbed, 13... Equipment, 14...
Bag, 16...Liquid, 17...Inlet, 18...Tunnel arch, 19...Ground.

Claims (1)

[Claims] 1. A bag with air permeability, liquid permeability, and flexibility is inserted between the structures, and a hardening liquid resin or cement with adhesive function is filled in this bag, and then this The installation part structure of a structure made of hardened resin or cement.